92 files changed, 1016 insertions, 1021 deletions
diff --git a/keyboards/alps64/rules.mk b/keyboards/alps64/rules.mk
index c326d3e26..621dc5a95 100644
--- a/keyboards/alps64/rules.mk
+++ b/keyboards/alps64/rules.mk
@@ -55,12 +55,12 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
-#   comment out to disable the options.
+#   change to no to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes   # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
-#SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no  # Breathing sleep LED during USB suspend
-#NKRO_ENABLE = yes      # USB Nkey Rollover - not yet supported in LUFA
-\ No newline at end of file
+NKRO_ENABLE = no        # USB Nkey Rollover - not yet supported in LUFA
diff --git a/keyboards/amj60/rules.mk b/keyboards/amj60/rules.mk
index 18403ac32..a1b4f8a61 100644
--- a/keyboards/amj60/rules.mk
+++ b/keyboards/amj60/rules.mk
@@ -52,15 +52,15 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= no  # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE  ?= no  # Mouse keys(+4700)
+MOUSEKEY_ENABLE  = no  # Mouse keys(+4700)
-EXTRAKEY_ENABLE  ?= yes # Audio control and System control(+450)
+EXTRAKEY_ENABLE  = yes # Audio control and System control(+450)
-CONSOLE_ENABLE   ?= yes # Console for debug(+400)
+CONSOLE_ENABLE   = yes # Console for debug(+400)
-COMMAND_ENABLE   ?= yes # Commands for debug and configuration
+COMMAND_ENABLE   = yes # Commands for debug and configuration
-NKRO_ENABLE      ?= yes # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE      = yes # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-RGBLIGHT_ENABLE  ?= yes # Enable keyboard underlight functionality (+4870)
+RGBLIGHT_ENABLE  = yes # Enable keyboard underlight functionality (+4870)
-BACKLIGHT_ENABLE ?= yes # Enable keyboard backlight functionality (+1150)
+BACKLIGHT_ENABLE = yes # Enable keyboard backlight functionality (+1150)
-MIDI_ENABLE      ?= no  # MIDI controls
+MIDI_ENABLE      = no  # MIDI controls
-AUDIO_ENABLE     ?= no
+AUDIO_ENABLE     = no
-UNICODE_ENABLE   ?= no  # Unicode
+UNICODE_ENABLE   = no  # Unicode
-BLUETOOTH_ENABLE ?= no  # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no  # Enable Bluetooth with the Adafruit EZ-Key HID
diff --git a/keyboards/amjpad/rules.mk b/keyboards/amjpad/rules.mk
index d8ec42365..dd5b2bbe0 100644
--- a/keyboards/amjpad/rules.mk
+++ b/keyboards/amjpad/rules.mk
@@ -52,15 +52,15 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= no  # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no   # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no   # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no    # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes               # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-RGBLIGHT_ENABLE ?= no   # Enable keyboard underlight functionality (+4870)
+RGBLIGHT_ENABLE = no   # Enable keyboard underlight functionality (+4870)
-BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality (+1150)
+BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality (+1150)
-MIDI_ENABLE ?= no               # MIDI controls
+MIDI_ENABLE = no                # MIDI controls
-AUDIO_ENABLE ?= no
+AUDIO_ENABLE = no
-UNICODE_ENABLE ?= no            # Unicode
+UNICODE_ENABLE = no             # Unicode
-BLUETOOTH_ENABLE ?= no # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
diff --git a/keyboards/atomic/rules.mk b/keyboards/atomic/rules.mk
index d0f3a3a1c..0bedc6f5c 100644
--- a/keyboards/atomic/rules.mk
+++ b/keyboards/atomic/rules.mk
@@ -52,18 +52,18 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
-\ No newline at end of file
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
+\ No newline at end of file
diff --git a/keyboards/atreus/rules.mk b/keyboards/atreus/rules.mk
index 3a00993bd..12d3ca6c5 100644
--- a/keyboards/atreus/rules.mk
+++ b/keyboards/atreus/rules.mk
@@ -64,19 +64,19 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   comment out to disable the options.
 #
 #BOOTMAGIC_ENABLE = yes # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes   # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE ?= yes  # Breathing sleep LED during USB suspend
+# SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - not yet supported in LUFA
+NKRO_ENABLE = yes               # USB Nkey Rollover - not yet supported in LUFA
-# BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= YES            # MIDI controls
+# MIDI_ENABLE = YES             # MIDI controls
-UNICODE_ENABLE ?= YES           # Unicode
+UNICODE_ENABLE = YES            # Unicode
-# BLUETOOTH_ENABLE ?= yes # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes # Enable Bluetooth with the Adafruit EZ-Key HID
-USB ?= /dev/cu.usbmodem1411
+USB = /dev/cu.usbmodem1411
 upload: build
        $(ATREUS_UPLOAD_COMMAND)
diff --git a/keyboards/atreus62/rules.mk b/keyboards/atreus62/rules.mk
index f5d0be23a..ca399e9c5 100644
--- a/keyboards/atreus62/rules.mk
+++ b/keyboards/atreus62/rules.mk
@@ -51,16 +51,16 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes         # Console for debug(+400)
+CONSOLE_ENABLE = yes         # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-#BACKLIGHT_ENABLE ?= no      # Enable keyboard backlight functionality
+#BACKLIGHT_ENABLE = no      # Enable keyboard backlight functionality
-#MIDI_ENABLE ?= no            # MIDI controls
+#MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= yes         # Unicode
+UNICODE_ENABLE = yes         # Unicode
-#BLUETOOTH_ENABLE ?= yes       # Enable Bluetooth with the Adafruit EZ-Key HID
+#BLUETOOTH_ENABLE = yes       # Enable Bluetooth with the Adafruit EZ-Key HID
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
diff --git a/keyboards/bantam44/rules.mk b/keyboards/bantam44/rules.mk
index baa0e9e7a..f245a3ba1 100644
--- a/keyboards/bantam44/rules.mk
+++ b/keyboards/bantam44/rules.mk
@@ -53,15 +53,15 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes   # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE ?= yes  # Breathing sleep LED during USB suspend
+# SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
-# NKRO_ENABLE ?= yes            # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+# NKRO_ENABLE = yes             # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-# BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= YES            # MIDI controls
+# MIDI_ENABLE = YES             # MIDI controls
-# UNICODE_ENABLE ?= YES                 # Unicode
+# UNICODE_ENABLE = YES          # Unicode
-# BLUETOOTH_ENABLE ?= yes # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes # Enable Bluetooth with the Adafruit EZ-Key HID
diff --git a/keyboards/chibios_test/rules.mk b/keyboards/chibios_test/rules.mk
index 4b5a84535..f72e1ab69 100644
--- a/keyboards/chibios_test/rules.mk
+++ b/keyboards/chibios_test/rules.mk
@@ -1,8 +1,8 @@
 #BOOTMAGIC_ENABLE = yes # Virtual DIP switch configuration
-MOUSEKEY_ENABLE ?= yes  # Mouse keys
+MOUSEKEY_ENABLE = yes   # Mouse keys
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control
+EXTRAKEY_ENABLE = yes   # Audio control and System control
-CONSOLE_ENABLE ?= yes   # Console for debug
+CONSOLE_ENABLE = yes    # Console for debug
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
-SLEEP_LED_ENABLE ?= yes  # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes          # USB Nkey Rollover
+NKRO_ENABLE = yes           # USB Nkey Rollover
-CUSTOM_MATRIX ?= yes # Custom matrix file
-\ No newline at end of file
+CUSTOM_MATRIX = yes # Custom matrix file
+\ No newline at end of file
diff --git a/keyboards/clueboard/rules.mk b/keyboards/clueboard/rules.mk
index 7ce096ba8..f852a0184 100644
--- a/keyboards/clueboard/rules.mk
+++ b/keyboards/clueboard/rules.mk
@@ -90,14 +90,14 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= no  # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no   # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no   # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no    # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= no   # Audio control and System control(+450)
+EXTRAKEY_ENABLE = no    # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes   # Commands for debug and configuration
+COMMAND_ENABLE = yes   # Commands for debug and configuration
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes               # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-AUDIO_ENABLE ?= no
+AUDIO_ENABLE = no
-RGBLIGHT_ENABLE ?= yes  # Enable keyboard underlight functionality
+RGBLIGHT_ENABLE = yes  # Enable keyboard underlight functionality
-MIDI_ENABLE ?= no               # MIDI controls
+MIDI_ENABLE = no                # MIDI controls
-UNICODE_ENABLE ?= no            # Unicode
+UNICODE_ENABLE = no             # Unicode
-BLUETOOTH_ENABLE ?= no # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
diff --git a/keyboards/cluecard/rules.mk b/keyboards/cluecard/rules.mk
index 454235877..2117c8127 100644
--- a/keyboards/cluecard/rules.mk
+++ b/keyboards/cluecard/rules.mk
@@ -53,18 +53,18 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-RGBLIGHT_ENABLE ?= yes       # Enable keyboard underlight functionality (+4870)
+RGBLIGHT_ENABLE = yes       # Enable keyboard underlight functionality (+4870)
-BACKLIGHT_ENABLE ?= yes       # Enable keyboard backlight functionality by default
+BACKLIGHT_ENABLE = yes       # Enable keyboard backlight functionality by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= yes           # Audio output on port C6
+AUDIO_ENABLE = yes           # Audio output on port C6
diff --git a/keyboards/cluepad/rules.mk b/keyboards/cluepad/rules.mk
index 19b16b95a..264aba044 100644
--- a/keyboards/cluepad/rules.mk
+++ b/keyboards/cluepad/rules.mk
@@ -52,14 +52,14 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes  # Virtual DIP switch configuration(+1000)
-# MOUSEKEY_ENABLE ?= yes        # Mouse keys(+4700)
+# MOUSEKEY_ENABLE = yes # Mouse keys(+4700)
-# EXTRAKEY_ENABLE ?= yes        # Audio control and System control(+450)
+# EXTRAKEY_ENABLE = yes # Audio control and System control(+450)
-# CONSOLE_ENABLE ?= yes # Console for debug(+400)
+# CONSOLE_ENABLE = yes  # Console for debug(+400)
-# COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+# COMMAND_ENABLE = yes    # Commands for debug and configuration
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes               # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= yes  # Enable numpad's backlight functionality
+BACKLIGHT_ENABLE = yes  # Enable numpad's backlight functionality
-RGBLIGHT_ENABLE ?= yes
+RGBLIGHT_ENABLE = yes
-# MIDI_ENABLE ?= YES            # MIDI controls
+# MIDI_ENABLE = YES             # MIDI controls
-# UNICODE_ENABLE ?= YES                 # Unicode
+# UNICODE_ENABLE = YES          # Unicode
-# BLUETOOTH_ENABLE ?= yes # Enable Bluetooth with the Adafruit EZ-Key HID
-\ No newline at end of file
+# BLUETOOTH_ENABLE = yes # Enable Bluetooth with the Adafruit EZ-Key HID
+\ No newline at end of file
diff --git a/keyboards/converter/ibm_terminal/keymaps/default/Makefile b/keyboards/converter/ibm_terminal/keymaps/default/Makefile
index 9ec246494..db293d6fd 100644
--- a/keyboards/converter/ibm_terminal/keymaps/default/Makefile
+++ b/keyboards/converter/ibm_terminal/keymaps/default/Makefile
@@ -2,24 +2,24 @@
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes        # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes        # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= no         # Commands for debug and configuration
+COMMAND_ENABLE = no         # Commands for debug and configuration
-NKRO_ENABLE ?= yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-UNICODEMAP_ENABLE ?= yes
+UNICODEMAP_ENABLE = yes
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
-PS2_USE_USART ?= yes
+PS2_USE_USART = yes
-API_SYSEX_ENABLE ?= no
+API_SYSEX_ENABLE = no
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 ifndef QUANTUM_DIR
        include ../../../../../Makefile
diff --git a/keyboards/converter/ibm_terminal/keymaps/priyadi/Makefile b/keyboards/converter/ibm_terminal/keymaps/priyadi/Makefile
index 9ec246494..db293d6fd 100644
--- a/keyboards/converter/ibm_terminal/keymaps/priyadi/Makefile
+++ b/keyboards/converter/ibm_terminal/keymaps/priyadi/Makefile
@@ -2,24 +2,24 @@
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes        # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes        # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= no         # Commands for debug and configuration
+COMMAND_ENABLE = no         # Commands for debug and configuration
-NKRO_ENABLE ?= yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-UNICODEMAP_ENABLE ?= yes
+UNICODEMAP_ENABLE = yes
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
-PS2_USE_USART ?= yes
+PS2_USE_USART = yes
-API_SYSEX_ENABLE ?= no
+API_SYSEX_ENABLE = no
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 ifndef QUANTUM_DIR
        include ../../../../../Makefile
diff --git a/keyboards/converter/ibm_terminal/rules.mk b/keyboards/converter/ibm_terminal/rules.mk
index 944d1bcec..9401cf199 100644
--- a/keyboards/converter/ibm_terminal/rules.mk
+++ b/keyboards/converter/ibm_terminal/rules.mk
@@ -49,24 +49,24 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes        # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes        # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= no         # Commands for debug and configuration
+COMMAND_ENABLE = no         # Commands for debug and configuration
-NKRO_ENABLE ?= yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-UNICODEMAP_ENABLE ?= yes
+UNICODEMAP_ENABLE = yes
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
-PS2_USE_USART ?= yes
+PS2_USE_USART = yes
-API_SYSEX_ENABLE ?= n
+API_SYSEX_ENABLE = n
 CUSTOM_MATRIX = yes
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 SRC = matrix.c led.c
 \ No newline at end of file
diff --git a/keyboards/dk60/rules.mk b/keyboards/dk60/rules.mk
index 36c6bed17..c85ed9b0a 100644
--- a/keyboards/dk60/rules.mk
+++ b/keyboards/dk60/rules.mk
@@ -5,17 +5,17 @@ F_USB = $(F_CPU)
 OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
 OPT_DEFS += -DBOOTLOADER_SIZE=4096
-BOOTMAGIC_ENABLE ?= yes # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no   # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no    # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-# CONSOLE_ENABLE ?= yes # Console for debug(+400)
+# CONSOLE_ENABLE = yes  # Console for debug(+400)
-# COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+# COMMAND_ENABLE = yes    # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes     # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes      # Allow locking of keyboard via magic key
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes               # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-RGBLIGHT_ENABLE ?= no   # Enable keyboard underlight functionality (+4870)
+RGBLIGHT_ENABLE = no   # Enable keyboard underlight functionality (+4870)
-BACKLIGHT_ENABLE ?= no  # Enable keyboard backlight functionality (+1150)
+BACKLIGHT_ENABLE = no  # Enable keyboard backlight functionality (+1150)
-MIDI_ENABLE ?= no               # MIDI controls
+MIDI_ENABLE = no                # MIDI controls
-AUDIO_ENABLE ?= no
+AUDIO_ENABLE = no
-UNICODE_ENABLE ?= yes           # Unicode
+UNICODE_ENABLE = yes            # Unicode
-BLUETOOTH_ENABLE ?= no # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
-SLEEP_LED_ENABLE ?= yes
+SLEEP_LED_ENABLE = yes
diff --git a/keyboards/ergodox/ez/Makefile b/keyboards/ergodox/ez/Makefile
index 1098332b8..663e09b7b 100644
--- a/keyboards/ergodox/ez/Makefile
+++ b/keyboards/ergodox/ez/Makefile
@@ -1,7 +1,7 @@
 SLEEP_LED_ENABLE = no  # Breathing sleep LED during USB suspend
 COMMAND_ENABLE   = no  # Commands for debug and configuration
-RGBLIGHT_ENABLE ?= yes
+RGBLIGHT_ENABLE = yes
-MIDI_ENABLE ?= no
+MIDI_ENABLE = no
 ifndef MAKEFILE_INCLUDED
        include ../../../Makefile
diff --git a/keyboards/ergodox/ez/rules.mk b/keyboards/ergodox/ez/rules.mk
index 6cd1c0c4f..e9bfb1399 100644
--- a/keyboards/ergodox/ez/rules.mk
+++ b/keyboards/ergodox/ez/rules.mk
@@ -72,5 +72,5 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 #
 SLEEP_LED_ENABLE = no
-API_SYSEX_ENABLE ?= no
+API_SYSEX_ENABLE = no
-RGBLIGHT_ENABLE ?= yes
+RGBLIGHT_ENABLE = yes
diff --git a/keyboards/ergodox/infinity/rules.mk b/keyboards/ergodox/infinity/rules.mk
index af29ebce8..bbb0f6efe 100644
--- a/keyboards/ergodox/infinity/rules.mk
+++ b/keyboards/ergodox/infinity/rules.mk
@@ -58,12 +58,12 @@ OPT_DEFS += -DCORTEX_VTOR_INIT=0x00002000
 # Build Options
 #   comment out to disable the options.
 #
-CUSTOM_MATRIX ?= yes # Custom matrix file
+CUSTOM_MATRIX = yes # Custom matrix file
 SERIAL_LINK_ENABLE = yes
-VISUALIZER_ENABLE ?= yes
+VISUALIZER_ENABLE = yes
-LCD_ENABLE ?= yes
+LCD_ENABLE = yes
-BACKLIGHT_ENABLE ?= yes
+BACKLIGHT_ENABLE = yes
-LCD_BACKLIGHT_ENABLE ?= yes
+LCD_BACKLIGHT_ENABLE = yes
 MIDI_ENABLE = no
 RGBLIGHT_ENABLE = no
diff --git a/keyboards/ergodox/keymaps/algernon/Makefile b/keyboards/ergodox/keymaps/algernon/Makefile
index 699add3dd..23d3bb723 100644
--- a/keyboards/ergodox/keymaps/algernon/Makefile
+++ b/keyboards/ergodox/keymaps/algernon/Makefile
@@ -1,15 +1,15 @@
 BOOTMAGIC_ENABLE=no
 COMMAND_ENABLE=no
 SLEEP_LED_ENABLE=no
-FORCE_NKRO ?= yes
+FORCE_NKRO = yes
 DEBUG_ENABLE = no
 CONSOLE_ENABLE = no
 TAP_DANCE_ENABLE = yes
-KEYLOGGER_ENABLE ?= yes
+KEYLOGGER_ENABLE = yes
 UCIS_ENABLE = yes
 MOUSEKEY_ENABLE = no
-AUTOLOG_ENABLE ?= no
+AUTOLOG_ENABLE = no
 ifeq (${FORCE_NKRO},yes)
 OPT_DEFS += -DFORCE_NKRO
diff --git a/keyboards/ergodox/keymaps/dvorak_programmer/Makefile b/keyboards/ergodox/keymaps/dvorak_programmer/Makefile
index 91b1ae597..44d702209 100644
--- a/keyboards/ergodox/keymaps/dvorak_programmer/Makefile
+++ b/keyboards/ergodox/keymaps/dvorak_programmer/Makefile
@@ -1,7 +1,7 @@
 BOOTMAGIC_ENABLE=no
 COMMAND_ENABLE=no
 SLEEP_LED_ENABLE=no
-FORCE_NKRO ?= yes
+FORCE_NKRO = yes
 DEBUG_ENABLE = no
 CONSOLE_ENABLE = no
 TAP_DANCE_ENABLE = no
diff --git a/keyboards/ergodox/keymaps/erez_experimental/Makefile b/keyboards/ergodox/keymaps/erez_experimental/Makefile
index 51a0c74c5..b673c5ce5 100644
--- a/keyboards/ergodox/keymaps/erez_experimental/Makefile
+++ b/keyboards/ergodox/keymaps/erez_experimental/Makefile
@@ -3,8 +3,6 @@
 SLEEP_LED_ENABLE = no  # Breathing sleep LED during USB suspend
 COMMAND_ENABLE   = no  # Commands for debug and configuration
-RGBLIGHT_ENABLE ?= yes
-MIDI_ENABLE ?= yes
 ifndef QUANTUM_DIR
        include ../../../../Makefile
diff --git a/keyboards/ergodox/keymaps/jack/Makefile b/keyboards/ergodox/keymaps/jack/Makefile
index 3ca69bb92..457a3d01d 100644
--- a/keyboards/ergodox/keymaps/jack/Makefile
+++ b/keyboards/ergodox/keymaps/jack/Makefile
@@ -1,6 +1,3 @@
-RGBLIGHT_ENABLE ?= yes
-MIDI_ENABLE ?= yes
 ifndef QUANTUM_DIR
        include ../../../../Makefile
 endif
diff --git a/keyboards/ergodox/keymaps/jafo/jafo-layout.pdf b/keyboards/ergodox/keymaps/jafo/jafo-layout.pdf
index 189b49b12..760a0eccf 100644
--- a/keyboards/ergodox/keymaps/jafo/jafo-layout.pdf
+++ b/keyboards/ergodox/keymaps/jafo/jafo-layout.pdf
Binary files differ
diff --git a/keyboards/ergodox/rules.mk b/keyboards/ergodox/rules.mk
index 2e501e81b..5939d634c 100644
--- a/keyboards/ergodox/rules.mk
+++ b/keyboards/ergodox/rules.mk
@@ -16,13 +16,13 @@
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= no  # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE  ?= yes # Mouse keys(+4700)
+MOUSEKEY_ENABLE  = yes # Mouse keys(+4700)
-EXTRAKEY_ENABLE  ?= yes # Audio control and System control(+450)
+EXTRAKEY_ENABLE  = yes # Audio control and System control(+450)
-CONSOLE_ENABLE   ?= no  # Console for debug(+400)
+CONSOLE_ENABLE   = no  # Console for debug(+400)
-COMMAND_ENABLE   ?= yes # Commands for debug and configuration
+COMMAND_ENABLE   = yes # Commands for debug and configuration
-CUSTOM_MATRIX    ?= yes # Custom matrix file for the ErgoDox EZ
+CUSTOM_MATRIX    = yes # Custom matrix file for the ErgoDox EZ
-SLEEP_LED_ENABLE ?= yes # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = yes # Breathing sleep LED during USB suspend
-NKRO_ENABLE      ?= yes # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE      = yes # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-UNICODE_ENABLE   ?= yes # Unicode
+UNICODE_ENABLE   = yes # Unicode
-ONEHAND_ENABLE   ?= yes # Allow swapping hands of keyboard
+ONEHAND_ENABLE   = yes # Allow swapping hands of keyboard
diff --git a/keyboards/frosty_flake/rules.mk b/keyboards/frosty_flake/rules.mk
index f878533fe..f9c43d3ed 100644
--- a/keyboards/frosty_flake/rules.mk
+++ b/keyboards/frosty_flake/rules.mk
@@ -51,21 +51,21 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no        # Console for debug(+400)
+CONSOLE_ENABLE = no        # Console for debug(+400)
-COMMAND_ENABLE ?= no        # Commands for debug and configuration
+COMMAND_ENABLE = no        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-FAUXCLICKY_ENABLE ?= no      # Use buzzer to emulate clicky switches
+FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
 CUSTOM_MATRIX = yes
 SRC += matrix.c
 \ No newline at end of file
diff --git a/keyboards/gh60/keymaps/dbroqua/Makefile b/keyboards/gh60/keymaps/dbroqua/Makefile
index f1644a8e4..31c63ffd8 100644
--- a/keyboards/gh60/keymaps/dbroqua/Makefile
+++ b/keyboards/gh60/keymaps/dbroqua/Makefile
@@ -91,20 +91,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes         # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes          # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes          # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes           # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes          # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
-# CONSOLE_ENABLE ?= yes         # Console for debug(+400)
+# CONSOLE_ENABLE = yes          # Console for debug(+400)
-# COMMAND_ENABLE ?= yes         # Commands for debug and configuration
+# COMMAND_ENABLE = yes          # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes     # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes      # Allow locking of keyboard via magic key
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= yes     # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = yes      # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes                  # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes                   # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-# BACKLIGHT_ENABLE ?= yes       # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes        # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= YES            # MIDI controls
+# MIDI_ENABLE = YES             # MIDI controls
-# UNICODE_ENABLE ?= YES         # Unicode
+# UNICODE_ENABLE = YES          # Unicode
-# BLUETOOTH_ENABLE ?= yes       # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes        # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= yes    # Enable RGB Underglow
+RGBLIGHT_ENABLE = yes    # Enable RGB Underglow
 ifndef QUANTUM_DIR
        include ../../../../Makefile
diff --git a/keyboards/gh60/keymaps/dbroqua_7U/Makefile b/keyboards/gh60/keymaps/dbroqua_7U/Makefile
index da0f07d7d..e54601969 100644
--- a/keyboards/gh60/keymaps/dbroqua_7U/Makefile
+++ b/keyboards/gh60/keymaps/dbroqua_7U/Makefile
@@ -91,20 +91,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes         # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes          # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes          # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes           # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes          # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
-# CONSOLE_ENABLE ?= yes         # Console for debug(+400)
+# CONSOLE_ENABLE = yes          # Console for debug(+400)
-# COMMAND_ENABLE ?= yes         # Commands for debug and configuration
+# COMMAND_ENABLE = yes          # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes     # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes      # Allow locking of keyboard via magic key
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= yes     # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = yes      # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes                  # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes                   # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-# BACKLIGHT_ENABLE ?= yes       # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes        # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= YES            # MIDI controls
+# MIDI_ENABLE = YES             # MIDI controls
-# UNICODE_ENABLE ?= YES         # Unicode
+# UNICODE_ENABLE = YES          # Unicode
-# BLUETOOTH_ENABLE ?= yes       # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes        # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no    # Enable RGB Underglow
+RGBLIGHT_ENABLE = no    # Enable RGB Underglow
 ifndef QUANTUM_DIR
        include ../../../../Makefile
diff --git a/keyboards/gh60/keymaps/robotmaxtron/Makefile b/keyboards/gh60/keymaps/robotmaxtron/Makefile
index c73cf1141..2b80ea00e 100644
--- a/keyboards/gh60/keymaps/robotmaxtron/Makefile
+++ b/keyboards/gh60/keymaps/robotmaxtron/Makefile
@@ -91,20 +91,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes         # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes          # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes          # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes           # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes          # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
-# CONSOLE_ENABLE ?= yes         # Console for debug(+400)
+# CONSOLE_ENABLE = yes          # Console for debug(+400)
-# COMMAND_ENABLE ?= yes         # Commands for debug and configuration
+# COMMAND_ENABLE = yes          # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes     # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes      # Allow locking of keyboard via magic key
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE ?= yes       # Breathing sleep LED during USB suspend
+# SLEEP_LED_ENABLE = yes        # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes               # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-# BACKLIGHT_ENABLE ?= yes       # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes        # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= YES            # MIDI controls
+# MIDI_ENABLE = YES             # MIDI controls
-# UNICODE_ENABLE ?= YES         # Unicode
+# UNICODE_ENABLE = YES          # Unicode
-# BLUETOOTH_ENABLE ?= yes       # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes        # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= yes          # Enable RGB Underglow
+RGBLIGHT_ENABLE = yes          # Enable RGB Underglow
 ifndef QUANTUM_DIR
        include ../../../../Makefile
diff --git a/keyboards/gh60/keymaps/unxmaal/Makefile b/keyboards/gh60/keymaps/unxmaal/Makefile
index c73cf1141..2b80ea00e 100644
--- a/keyboards/gh60/keymaps/unxmaal/Makefile
+++ b/keyboards/gh60/keymaps/unxmaal/Makefile
@@ -91,20 +91,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes         # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes          # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes          # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes           # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes          # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
-# CONSOLE_ENABLE ?= yes         # Console for debug(+400)
+# CONSOLE_ENABLE = yes          # Console for debug(+400)
-# COMMAND_ENABLE ?= yes         # Commands for debug and configuration
+# COMMAND_ENABLE = yes          # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes     # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes      # Allow locking of keyboard via magic key
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE ?= yes       # Breathing sleep LED during USB suspend
+# SLEEP_LED_ENABLE = yes        # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes               # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-# BACKLIGHT_ENABLE ?= yes       # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes        # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= YES            # MIDI controls
+# MIDI_ENABLE = YES             # MIDI controls
-# UNICODE_ENABLE ?= YES         # Unicode
+# UNICODE_ENABLE = YES          # Unicode
-# BLUETOOTH_ENABLE ?= yes       # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes        # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= yes          # Enable RGB Underglow
+RGBLIGHT_ENABLE = yes          # Enable RGB Underglow
 ifndef QUANTUM_DIR
        include ../../../../Makefile
diff --git a/keyboards/gh60/rules.mk b/keyboards/gh60/rules.mk
index aba680e45..00f4b660a 100644
--- a/keyboards/gh60/rules.mk
+++ b/keyboards/gh60/rules.mk
@@ -51,16 +51,16 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes         # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes          # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes          # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes           # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes          # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
-# CONSOLE_ENABLE ?= yes         # Console for debug(+400)
+# CONSOLE_ENABLE = yes          # Console for debug(+400)
-# COMMAND_ENABLE ?= yes         # Commands for debug and configuration
+# COMMAND_ENABLE = yes          # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes     # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes      # Allow locking of keyboard via magic key
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE ?= yes       # Breathing sleep LED during USB suspend
+# SLEEP_LED_ENABLE = yes        # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes                      # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes                       # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-# BACKLIGHT_ENABLE ?= yes       # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes        # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= YES                    # MIDI controls
+# MIDI_ENABLE = YES                     # MIDI controls
-# UNICODE_ENABLE ?= YES         # Unicode
+# UNICODE_ENABLE = YES          # Unicode
-# BLUETOOTH_ENABLE ?= yes       # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes        # Enable Bluetooth with the Adafruit EZ-Key HID
diff --git a/keyboards/gherkin/rules.mk b/keyboards/gherkin/rules.mk
index 0e7a40727..6bb9edb35 100644
--- a/keyboards/gherkin/rules.mk
+++ b/keyboards/gherkin/rules.mk
@@ -44,13 +44,13 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes   # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no    # Console for debug(+400)
+CONSOLE_ENABLE = no     # Console for debug(+400)
-COMMAND_ENABLE ?= no    # Commands for debug and configuration
+COMMAND_ENABLE = no    # Commands for debug and configuration
-SLEEP_LED_ENABLE ?= no  # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no  # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes               # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality
-AUDIO_ENABLE ?= no
+AUDIO_ENABLE = no
-RGBLIGHT_ENABLE ?= no
-\ No newline at end of file
+RGBLIGHT_ENABLE = no
+\ No newline at end of file
diff --git a/keyboards/gonnerd/rules.mk b/keyboards/gonnerd/rules.mk
index c9b584d54..ebea1005b 100644
--- a/keyboards/gonnerd/rules.mk
+++ b/keyboards/gonnerd/rules.mk
@@ -50,17 +50,17 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
                             # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
                             # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
diff --git a/keyboards/handwired/CMD60/rules.mk b/keyboards/handwired/CMD60/rules.mk
index 711759917..f50987cde 100644
--- a/keyboards/handwired/CMD60/rules.mk
+++ b/keyboards/handwired/CMD60/rules.mk
@@ -51,20 +51,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 ifndef QUANTUM_DIR
        include ../../../Makefile
diff --git a/keyboards/handwired/MS_sculpt_mobile/rules.mk b/keyboards/handwired/MS_sculpt_mobile/rules.mk
index 680389c84..5b8902031 100644
--- a/keyboards/handwired/MS_sculpt_mobile/rules.mk
+++ b/keyboards/handwired/MS_sculpt_mobile/rules.mk
@@ -24,23 +24,23 @@ F_USB = $(F_CPU)
 OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-USB ?= /dev/cu.usbmodem14141
+USB = /dev/cu.usbmodem14141
 
diff --git a/keyboards/handwired/arrow_pad/rules.mk b/keyboards/handwired/arrow_pad/rules.mk
index 3dca9b6ea..a03f0836b 100644
--- a/keyboards/handwired/arrow_pad/rules.mk
+++ b/keyboards/handwired/arrow_pad/rules.mk
@@ -53,18 +53,18 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes  # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes  # Allow locking of keyboard via magic key
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= yes           # USB Nkey Rollover
+NKRO_ENABLE = yes           # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
-\ No newline at end of file
+AUDIO_ENABLE = no           # Audio output on port C6
+\ No newline at end of file
diff --git a/keyboards/handwired/atreus50/rules.mk b/keyboards/handwired/atreus50/rules.mk
index 7770ea2a2..5e808dfa7 100644
--- a/keyboards/handwired/atreus50/rules.mk
+++ b/keyboards/handwired/atreus50/rules.mk
@@ -52,21 +52,21 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 avrdude: build
        ls /dev/tty* > /tmp/1; \
diff --git a/keyboards/handwired/fivethirteen/rules.mk b/keyboards/handwired/fivethirteen/rules.mk
index 711759917..f50987cde 100644
--- a/keyboards/handwired/fivethirteen/rules.mk
+++ b/keyboards/handwired/fivethirteen/rules.mk
@@ -51,20 +51,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 ifndef QUANTUM_DIR
        include ../../../Makefile
diff --git a/keyboards/handwired/frenchdev/rules.mk b/keyboards/handwired/frenchdev/rules.mk
index 16203a5f5..2b70ae564 100644
--- a/keyboards/handwired/frenchdev/rules.mk
+++ b/keyboards/handwired/frenchdev/rules.mk
@@ -70,22 +70,22 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= no  # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE  ?= yes # Mouse keys(+4700)
+MOUSEKEY_ENABLE  = yes # Mouse keys(+4700)
-EXTRAKEY_ENABLE  ?= yes # Audio control and System control(+450)
+EXTRAKEY_ENABLE  = yes # Audio control and System control(+450)
-CONSOLE_ENABLE   ?= yes  # Console for debug(+400)
+CONSOLE_ENABLE   = yes  # Console for debug(+400)
-COMMAND_ENABLE   ?= yes # Commands for debug and configuration
+COMMAND_ENABLE   = yes # Commands for debug and configuration
-CUSTOM_MATRIX    ?= yes # Custom matrix file (taken and adapted from the ErgoDox EZ to handle custom number of columns)
+CUSTOM_MATRIX    = yes # Custom matrix file (taken and adapted from the ErgoDox EZ to handle custom number of columns)
-SLEEP_LED_ENABLE ?= no # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
-NKRO_ENABLE      ?= yes # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE      = yes # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-UNICODE_ENABLE   ?= yes # Unicode
+UNICODE_ENABLE   = yes # Unicode
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 RGBLIGHT_ENABLE = no
-API_SYSEX_ENABLE ?= no
+API_SYSEX_ENABLE = no
 #ifndef QUANTUM_DIR
 #       include ../../../Makefile
diff --git a/keyboards/handwired/gamenum/rules.mk b/keyboards/handwired/gamenum/rules.mk
index afb9372e1..e8b0c6048 100644
--- a/keyboards/handwired/gamenum/rules.mk
+++ b/keyboards/handwired/gamenum/rules.mk
@@ -51,20 +51,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 ifndef QUANTUM_DIR
        include ../../Makefile
diff --git a/keyboards/handwired/kbod/rules.mk b/keyboards/handwired/kbod/rules.mk
index 4fcd147a9..b97cacd5c 100644
--- a/keyboards/handwired/kbod/rules.mk
+++ b/keyboards/handwired/kbod/rules.mk
@@ -51,18 +51,18 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no        # Console for debug(+400)
+CONSOLE_ENABLE = no        # Console for debug(+400)
-COMMAND_ENABLE ?= no        # Commands for debug and configuration
+COMMAND_ENABLE = no        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-FAUXCLICKY_ENABLE ?= no      # Use buzzer to emulate clicky switches
+FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
diff --git a/keyboards/handwired/magicforce68/rules.mk b/keyboards/handwired/magicforce68/rules.mk
index e897ef252..0e07bde40 100644
--- a/keyboards/handwired/magicforce68/rules.mk
+++ b/keyboards/handwired/magicforce68/rules.mk
@@ -51,20 +51,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 ifndef QUANTUM_DIR
        include ../../../Makefile
diff --git a/keyboards/handwired/minorca/rules.mk b/keyboards/handwired/minorca/rules.mk
index c51371a78..ce502b820 100644
--- a/keyboards/handwired/minorca/rules.mk
+++ b/keyboards/handwired/minorca/rules.mk
@@ -50,18 +50,18 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE ?= yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= yes       # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = yes       # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
-\ No newline at end of file
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
+\ No newline at end of file
diff --git a/keyboards/handwired/numpad20/rules.mk b/keyboards/handwired/numpad20/rules.mk
index e897ef252..0e07bde40 100644
--- a/keyboards/handwired/numpad20/rules.mk
+++ b/keyboards/handwired/numpad20/rules.mk
@@ -51,20 +51,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 ifndef QUANTUM_DIR
        include ../../../Makefile
diff --git a/keyboards/handwired/onekey/rules.mk b/keyboards/handwired/onekey/rules.mk
index c6d10856a..e5a953362 100644
--- a/keyboards/handwired/onekey/rules.mk
+++ b/keyboards/handwired/onekey/rules.mk
@@ -52,11 +52,11 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= no  # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no   # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes   # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
 #SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
 #NKRO_ENABLE = yes      # USB Nkey Rollover - not yet supported in LUFA
diff --git a/keyboards/handwired/ortho5x13/rules.mk b/keyboards/handwired/ortho5x13/rules.mk
index e897ef252..0e07bde40 100644
--- a/keyboards/handwired/ortho5x13/rules.mk
+++ b/keyboards/handwired/ortho5x13/rules.mk
@@ -51,20 +51,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 ifndef QUANTUM_DIR
        include ../../../Makefile
diff --git a/keyboards/handwired/pilcrow/rules.mk b/keyboards/handwired/pilcrow/rules.mk
index 55898147d..67badc820 100644
--- a/keyboards/handwired/pilcrow/rules.mk
+++ b/keyboards/handwired/pilcrow/rules.mk
@@ -51,17 +51,17 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
diff --git a/keyboards/handwired/promethium/rules.mk b/keyboards/handwired/promethium/rules.mk
index a6dd43b85..6fa45b42b 100644
--- a/keyboards/handwired/promethium/rules.mk
+++ b/keyboards/handwired/promethium/rules.mk
@@ -50,27 +50,27 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no        # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= no         # Commands for debug and configuration
+COMMAND_ENABLE = no         # Commands for debug and configuration
-NKRO_ENABLE ?= yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-UNICODEMAP_ENABLE ?= yes
+UNICODEMAP_ENABLE = yes
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
-PS2_MOUSE_ENABLE ?= yes
+PS2_MOUSE_ENABLE = yes
-PS2_USE_INT ?= yes
+PS2_USE_INT = yes
-API_SYSEX_ENABLE ?= no
+API_SYSEX_ENABLE = no
-CUSTOM_MATRIX ?= yes
+CUSTOM_MATRIX = yes
-BLUETOOTH ?= AdafruitBLE
+BLUETOOTH = AdafruitBLE
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 SRC += $(QUANTUM_DIR)/light_ws2812.c
 SRC += rgbsps.c
diff --git a/keyboards/handwired/reddot/rules.mk b/keyboards/handwired/reddot/rules.mk
index 9a4409fe6..b00ee9e0e 100755
--- a/keyboards/handwired/reddot/rules.mk
+++ b/keyboards/handwired/reddot/rules.mk
@@ -16,7 +16,7 @@ MCU = atmega32u4
 F_CPU = 16000000
 # for avr upload
-USB ?= /dev/cu.usbmodem1421
+USB = /dev/cu.usbmodem1421
 #
 # LUFA specific
 #
@@ -64,20 +64,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
 MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
 EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no        # Console for debug(+400)
+CONSOLE_ENABLE = no        # Console for debug(+400)
-COMMAND_ENABLE ?= no        # Commands for debug and configuration
+COMMAND_ENABLE = no        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 ifndef QUANTUM_DIR
        include ../../../Makefile
diff --git a/keyboards/handwired/retro_refit/rules.mk b/keyboards/handwired/retro_refit/rules.mk
index 10fbfa5c9..98aa19e6b 100644
--- a/keyboards/handwired/retro_refit/rules.mk
+++ b/keyboards/handwired/retro_refit/rules.mk
@@ -53,16 +53,16 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes         # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes          # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes          # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes           # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes          # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes           # Console for debug(+400)
+CONSOLE_ENABLE = yes            # Console for debug(+400)
-COMMAND_ENABLE ?= yes           # Commands for debug and configuration
+COMMAND_ENABLE = yes            # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes     # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes      # Allow locking of keyboard via magic key
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE ?= yes       # Breathing sleep LED during USB suspend
+# SLEEP_LED_ENABLE = yes        # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes                      # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes                       # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-# BACKLIGHT_ENABLE ?= yes       # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes        # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= YES                    # MIDI controls
+# MIDI_ENABLE = YES                     # MIDI controls
-# UNICODE_ENABLE ?= YES         # Unicode
+# UNICODE_ENABLE = YES          # Unicode
-# BLUETOOTH_ENABLE ?= yes       # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes        # Enable Bluetooth with the Adafruit EZ-Key HID
diff --git a/keyboards/handwired/trackpoint/rules.mk b/keyboards/handwired/trackpoint/rules.mk
index 0609dd304..aaf630f10 100644
--- a/keyboards/handwired/trackpoint/rules.mk
+++ b/keyboards/handwired/trackpoint/rules.mk
@@ -4,21 +4,21 @@ ARCH = AVR8
 F_USB = $(F_CPU)
 OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
 OPT_DEFS += -DBOOTLOADER_SIZE=512
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-PS2_MOUSE_ENABLE ?= yes
+PS2_MOUSE_ENABLE = yes
-PS2_USE_USART ?= yes
+PS2_USE_USART = yes
 ifndef QUANTUM_DIR
        include ../../Makefile
diff --git a/keyboards/handwired/traveller/rules.mk b/keyboards/handwired/traveller/rules.mk
index 12a4b71f4..a7f7fc230 100644
--- a/keyboards/handwired/traveller/rules.mk
+++ b/keyboards/handwired/traveller/rules.mk
@@ -16,7 +16,7 @@ MCU = atmega32u4
 F_CPU = 16000000
 # for avr upload
-USB ?= /dev/cu.usbmodem1421
+USB = /dev/cu.usbmodem1421
 #
 # LUFA specific
 #
@@ -64,20 +64,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
 MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
 EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no        # Console for debug(+400)
+CONSOLE_ENABLE = no        # Console for debug(+400)
-COMMAND_ENABLE ?= no        # Commands for debug and configuration
+COMMAND_ENABLE = no        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 RGBLIGHT_ENABLE = yes
 ifndef QUANTUM_DIR
diff --git a/keyboards/hhkb/rules.mk b/keyboards/hhkb/rules.mk
index e4190039f..d31e755ef 100644
--- a/keyboards/hhkb/rules.mk
+++ b/keyboards/hhkb/rules.mk
@@ -58,19 +58,19 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes  # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes  # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes   # Console for debug(+400)
-COMMAND_ENABLE ?= yes   # Commands for debug and configuration
+COMMAND_ENABLE = yes   # Commands for debug and configuration
-CUSTOM_MATRIX ?= yes    # Custom matrix file for the HHKB
+CUSTOM_MATRIX = yes    # Custom matrix file for the HHKB
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE ?= yes  # Breathing sleep LED during USB suspend
+# SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
-# NKRO_ENABLE ?= yes       # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+# NKRO_ENABLE = yes       # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-# BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= yes       # MIDI controls
+# MIDI_ENABLE = yes       # MIDI controls
-# UNICODE_ENABLE ?= yes    # Unicode
+# UNICODE_ENABLE = yes    # Unicode
-# BLUETOOTH_ENABLE ?= yes  # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes  # Enable Bluetooth with the Adafruit EZ-Key HID
 debug-on: EXTRAFLAGS += -DDEBUG -DDEBUG_ACTION
 debug-on: all
diff --git a/keyboards/infinity60/rules.mk b/keyboards/infinity60/rules.mk
index c19f62401..a3ddd55c6 100644
--- a/keyboards/infinity60/rules.mk
+++ b/keyboards/infinity60/rules.mk
@@ -56,12 +56,12 @@ OPT_DEFS = -DCORTEX_VTOR_INIT=0x00001000
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= no  # Virtual DIP switch configuration
+BOOTMAGIC_ENABLE = no   # Virtual DIP switch configuration
 ## (Note that for BOOTMAGIC on Teensy LC you have to use a custom .ld script.)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys
+MOUSEKEY_ENABLE = yes   # Mouse keys
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control
+EXTRAKEY_ENABLE = yes   # Audio control and System control
-CONSOLE_ENABLE ?= yes   # Console for debug
+CONSOLE_ENABLE = yes    # Console for debug
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
-SLEEP_LED_ENABLE ?= yes  # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes          # USB Nkey Rollover
+NKRO_ENABLE = yes           # USB Nkey Rollover
-CUSTOM_MATRIX ?= yes # Custom matrix file
+CUSTOM_MATRIX = yes # Custom matrix file
diff --git a/keyboards/jd40/rules.mk b/keyboards/jd40/rules.mk
index 2f18fdf10..2bce6d2a2 100644
--- a/keyboards/jd40/rules.mk
+++ b/keyboards/jd40/rules.mk
@@ -53,17 +53,17 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes         # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes          # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes          # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes           # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes          # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
-# CONSOLE_ENABLE ?= yes         # Console for debug(+400)
+# CONSOLE_ENABLE = yes          # Console for debug(+400)
-# COMMAND_ENABLE ?= yes         # Commands for debug and configuration
+# COMMAND_ENABLE = yes          # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes     # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes      # Allow locking of keyboard via magic key
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE ?= yes       # Breathing sleep LED during USB suspend
+# SLEEP_LED_ENABLE = yes        # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes                      # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes                       # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-# BACKLIGHT_ENABLE ?= yes       # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes        # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= YES                    # MIDI controls
+# MIDI_ENABLE = YES                     # MIDI controls
-# UNICODE_ENABLE ?= YES         # Unicode
+# UNICODE_ENABLE = YES          # Unicode
-# BLUETOOTH_ENABLE ?= yes       # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes        # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= yes          # Enable RGB Underglow
-\ No newline at end of file
+RGBLIGHT_ENABLE = yes          # Enable RGB Underglow
+\ No newline at end of file
diff --git a/keyboards/jd45/rules.mk b/keyboards/jd45/rules.mk
index 2f1e266a1..fe8354e95 100644
--- a/keyboards/jd45/rules.mk
+++ b/keyboards/jd45/rules.mk
@@ -53,15 +53,15 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes   # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE ?= yes  # Breathing sleep LED during USB suspend
+# SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
-# NKRO_ENABLE ?= yes            # USB Nkey Rollover - not yet supported in LUFA
+# NKRO_ENABLE = yes             # USB Nkey Rollover - not yet supported in LUFA
-BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality
-MIDI_ENABLE ?= YES              # MIDI controls
+MIDI_ENABLE = YES               # MIDI controls
-# UNICODE_ENABLE ?= YES                 # Unicode
+# UNICODE_ENABLE = YES          # Unicode
-BLUETOOTH_ENABLE ?= yes # Enable Bluetooth with the Adafruit EZ-Key HID
-\ No newline at end of file
+BLUETOOTH_ENABLE = yes # Enable Bluetooth with the Adafruit EZ-Key HID
+\ No newline at end of file
diff --git a/keyboards/kbd75/rules.mk b/keyboards/kbd75/rules.mk
index c303af4bc..9c4082da2 100644
--- a/keyboards/kbd75/rules.mk
+++ b/keyboards/kbd75/rules.mk
@@ -44,13 +44,13 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes   # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no    # Console for debug(+400)
+CONSOLE_ENABLE = no     # Console for debug(+400)
-COMMAND_ENABLE ?= no    # Commands for debug and configuration
+COMMAND_ENABLE = no    # Commands for debug and configuration
-SLEEP_LED_ENABLE ?= no  # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no  # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes               # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality
-AUDIO_ENABLE ?= no
+AUDIO_ENABLE = no
-RGBLIGHT_ENABLE ?= yes
-\ No newline at end of file
+RGBLIGHT_ENABLE = yes
+\ No newline at end of file
diff --git a/keyboards/kc60/keymaps/stanleylai/Makefile b/keyboards/kc60/keymaps/stanleylai/Makefile
index b8b2beda4..9a381d2e7 100644
--- a/keyboards/kc60/keymaps/stanleylai/Makefile
+++ b/keyboards/kc60/keymaps/stanleylai/Makefile
@@ -3,22 +3,22 @@
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no        # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= no         # Commands for debug and configuration
+COMMAND_ENABLE = no         # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes  # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes  # Allow locking of keyboard via magic key
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE ?= yes                   # Enable WS2812 underglow RGB strip
+RGBLIGHT_ENABLE = yes                    # Enable WS2812 underglow RGB strip
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= yes           # USB Nkey Rollover
+NKRO_ENABLE = yes           # USB Nkey Rollover
 ifndef QUANTUM_DIR
        include ../../../../Makefile
diff --git a/keyboards/kc60/keymaps/wigguno/Makefile b/keyboards/kc60/keymaps/wigguno/Makefile
index 0d7d918d8..1f8d1506f 100644
--- a/keyboards/kc60/keymaps/wigguno/Makefile
+++ b/keyboards/kc60/keymaps/wigguno/Makefile
@@ -3,21 +3,21 @@
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no        # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= no         # Commands for debug and configuration
+COMMAND_ENABLE = no         # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes  # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes  # Allow locking of keyboard via magic key
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= yes           # USB Nkey Rollover
+NKRO_ENABLE = yes           # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 ifndef QUANTUM_DIR
        include ../../../../Makefile
diff --git a/keyboards/kc60/keymaps/ws2812/Makefile b/keyboards/kc60/keymaps/ws2812/Makefile
index 891c44416..a8c93bcf5 100644
--- a/keyboards/kc60/keymaps/ws2812/Makefile
+++ b/keyboards/kc60/keymaps/ws2812/Makefile
@@ -3,22 +3,22 @@
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes  # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes  # Allow locking of keyboard via magic key
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE ?= yes                   # Enable WS2812 underglow RGB strip
+RGBLIGHT_ENABLE = yes                    # Enable WS2812 underglow RGB strip
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
 ifndef QUANTUM_DIR
        include ../../../../Makefile
diff --git a/keyboards/kc60/rules.mk b/keyboards/kc60/rules.mk
index 06bd5dc92..d5b94fb83 100644
--- a/keyboards/kc60/rules.mk
+++ b/keyboards/kc60/rules.mk
@@ -51,18 +51,18 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-KEYBOARD_LOCK_ENABLE ?= yes  # Allow locking of keyboard via magic key
+KEYBOARD_LOCK_ENABLE = yes  # Allow locking of keyboard via magic key
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
diff --git a/keyboards/kinesis/rules.mk b/keyboards/kinesis/rules.mk
index 956a64bdd..a7ff8da8b 100644
--- a/keyboards/kinesis/rules.mk
+++ b/keyboards/kinesis/rules.mk
@@ -56,18 +56,18 @@ OPT_DEFS += -DBOOTLOADER_SIZE=2048
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
 MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no        # Console for debug(+400)
+CONSOLE_ENABLE = no        # Console for debug(+400)
-COMMAND_ENABLE ?= no
+COMMAND_ENABLE = no
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
 AUDIO_ENABLE = no # Audio output should be port E6, current quantum library hardcodes C6, which we use for programming
 CUSTOM_MATRIX=yes # need to do our own thing with the matrix
diff --git a/keyboards/kitten_paw/rules.mk b/keyboards/kitten_paw/rules.mk
index b0c909d11..fe7b6d376 100644
--- a/keyboards/kitten_paw/rules.mk
+++ b/keyboards/kitten_paw/rules.mk
@@ -53,20 +53,20 @@ OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 CUSTOM_MATRIX = yes
 SRC += matrix.c
diff --git a/keyboards/kmac/rules.mk b/keyboards/kmac/rules.mk
index 2305de412..41b16979d 100644
--- a/keyboards/kmac/rules.mk
+++ b/keyboards/kmac/rules.mk
@@ -54,19 +54,19 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-CUSTOM_MATRIX ?= yes         # Custom matrix file
+CUSTOM_MATRIX = yes         # Custom matrix file
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= yes           # USB Nkey Rollover
+NKRO_ENABLE = yes           # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI support (+2400 to 4200, depending on config)
+MIDI_ENABLE = no            # MIDI support (+2400 to 4200, depending on config)
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-FAUXCLICKY_ENABLE ?= no      # Use buzzer to emulate clicky switches
+FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
diff --git a/keyboards/lets_split/rules.mk b/keyboards/lets_split/rules.mk
index 43eff99e7..cc87ee31c 100644
--- a/keyboards/lets_split/rules.mk
+++ b/keyboards/lets_split/rules.mk
@@ -56,22 +56,22 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no       # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no       # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
-SUBPROJECT_rev1 ?= yes
+SUBPROJECT_rev1 = yes
-USE_I2C ?= yes
+USE_I2C = yes
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 CUSTOM_MATRIX = yes
diff --git a/keyboards/m10a/rules.mk b/keyboards/m10a/rules.mk
index f5a785dbc..0a00c7ccb 100644
--- a/keyboards/m10a/rules.mk
+++ b/keyboards/m10a/rules.mk
@@ -50,19 +50,19 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= no        # Commands for debug and configuration
+COMMAND_ENABLE = no        # Commands for debug and configuration
-NKRO_ENABLE ?= yes            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= yes         # Unicode
+UNICODE_ENABLE = yes         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.
 API_SYSEX_ENABLE = yes
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
diff --git a/keyboards/maxipad/rules.mk b/keyboards/maxipad/rules.mk
index a5c739152..31be1924f 100644
--- a/keyboards/maxipad/rules.mk
+++ b/keyboards/maxipad/rules.mk
@@ -53,24 +53,24 @@ OPT_DEFS += -DBOOTLOADER_SIZE=512
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes   # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE ?= yes  # Breathing sleep LED during USB suspend
+# SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
-# NKRO_ENABLE ?= yes            # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+# NKRO_ENABLE = yes             # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-# BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= YES            # MIDI controls
+# MIDI_ENABLE = YES             # MIDI controls
-# UNICODE_ENABLE ?= YES                 # Unicode
+# UNICODE_ENABLE = YES          # Unicode
-# BLUETOOTH_ENABLE ?= yes # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes # Enable Bluetooth with the Adafruit EZ-Key HID
-USE_PRO_MICRO ?= yes
+USE_PRO_MICRO = yes
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
diff --git a/keyboards/mitosis/rules.mk b/keyboards/mitosis/rules.mk
index 4e4eba82b..04fa552f8 100644
--- a/keyboards/mitosis/rules.mk
+++ b/keyboards/mitosis/rules.mk
@@ -62,20 +62,20 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   comment out to disable the options.
 #
 #BOOTMAGIC_ENABLE = yes # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes   # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes   # Commands for debug and configuration
+COMMAND_ENABLE = yes   # Commands for debug and configuration
-CUSTOM_MATRIX ?= yes    # Remote matrix from the wireless bridge
+CUSTOM_MATRIX = yes    # Remote matrix from the wireless bridge
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE ?= yes  # Breathing sleep LED during USB suspend
+# SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - not yet supported in LUFA
+NKRO_ENABLE = yes               # USB Nkey Rollover - not yet supported in LUFA
-# BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality
+# BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality
-# MIDI_ENABLE ?= YES            # MIDI controls
+# MIDI_ENABLE = YES             # MIDI controls
-UNICODE_ENABLE ?= YES           # Unicode
+UNICODE_ENABLE = YES            # Unicode
-# BLUETOOTH_ENABLE ?= yes # Enable Bluetooth with the Adafruit EZ-Key HID
+# BLUETOOTH_ENABLE = yes # Enable Bluetooth with the Adafruit EZ-Key HID
-USB ?= /dev/ttyACM0
+USB = /dev/ttyACM0
 upload: build
        $(MITOSIS_UPLOAD_COMMAND)
diff --git a/keyboards/miuni32/rules.mk b/keyboards/miuni32/rules.mk
index ef8daf3ca..1092e50d8 100644
--- a/keyboards/miuni32/rules.mk
+++ b/keyboards/miuni32/rules.mk
@@ -51,17 +51,17 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
diff --git a/keyboards/nyquist/rules.mk b/keyboards/nyquist/rules.mk
index 0efa78550..dfcff1d90 100644
--- a/keyboards/nyquist/rules.mk
+++ b/keyboards/nyquist/rules.mk
@@ -55,22 +55,22 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no       # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no       # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
-SUBPROJECT_rev1 ?= yes
+SUBPROJECT_rev1 = yes
-USE_I2C ?= yes
+USE_I2C = yes
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 CUSTOM_MATRIX = yes
diff --git a/keyboards/orthodox/rules.mk b/keyboards/orthodox/rules.mk
index 0efa78550..dfcff1d90 100644
--- a/keyboards/orthodox/rules.mk
+++ b/keyboards/orthodox/rules.mk
@@ -55,22 +55,22 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no       # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no       # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
-SUBPROJECT_rev1 ?= yes
+SUBPROJECT_rev1 = yes
-USE_I2C ?= yes
+USE_I2C = yes
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 CUSTOM_MATRIX = yes
diff --git a/keyboards/pegasushoof/keymaps/blowrak/Makefile b/keyboards/pegasushoof/keymaps/blowrak/Makefile
index fec0d2d97..168fb625b 100644
--- a/keyboards/pegasushoof/keymaps/blowrak/Makefile
+++ b/keyboards/pegasushoof/keymaps/blowrak/Makefile
@@ -2,19 +2,19 @@
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-CUSTOM_MATRIX ?= yes         # Custom matrix file for the Pegasus Hoof due to the 2x74HC42
+CUSTOM_MATRIX = yes         # Custom matrix file for the Pegasus Hoof due to the 2x74HC42
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
 ifndef QUANTUM_DIR
diff --git a/keyboards/pegasushoof/keymaps/default/Makefile b/keyboards/pegasushoof/keymaps/default/Makefile
index fec0d2d97..168fb625b 100644
--- a/keyboards/pegasushoof/keymaps/default/Makefile
+++ b/keyboards/pegasushoof/keymaps/default/Makefile
@@ -2,19 +2,19 @@
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-CUSTOM_MATRIX ?= yes         # Custom matrix file for the Pegasus Hoof due to the 2x74HC42
+CUSTOM_MATRIX = yes         # Custom matrix file for the Pegasus Hoof due to the 2x74HC42
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
 ifndef QUANTUM_DIR
diff --git a/keyboards/pegasushoof/rules.mk b/keyboards/pegasushoof/rules.mk
index b3eeebfdb..c5a35428c 100644
--- a/keyboards/pegasushoof/rules.mk
+++ b/keyboards/pegasushoof/rules.mk
@@ -49,19 +49,19 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
-CUSTOM_MATRIX ?= yes
+CUSTOM_MATRIX = yes
 SRC = matrix.c
diff --git a/keyboards/phantom/rules.mk b/keyboards/phantom/rules.mk
index c07593961..af0025b3c 100644
--- a/keyboards/phantom/rules.mk
+++ b/keyboards/phantom/rules.mk
@@ -51,19 +51,19 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= yes           # USB Nkey Rollover
+NKRO_ENABLE = yes           # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight. Do not enable this with audio at the same time.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight. Do not enable this with audio at the same time.
-MIDI_ENABLE ?= no            # MIDI support (+2400 to 4200, depending on config)
+MIDI_ENABLE = no            # MIDI support (+2400 to 4200, depending on config)
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-FAUXCLICKY_ENABLE ?= no      # Use buzzer to emulate clicky switches
+FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
diff --git a/keyboards/planck/keymaps/handwired_binaryplease/Makefile b/keyboards/planck/keymaps/handwired_binaryplease/Makefile
index 538b1c26c..248fe2bb7 100644
--- a/keyboards/planck/keymaps/handwired_binaryplease/Makefile
+++ b/keyboards/planck/keymaps/handwired_binaryplease/Makefile
@@ -56,19 +56,19 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= no        # Commands for debug and configuration
+COMMAND_ENABLE = no        # Commands for debug and configuration
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= yes            # MIDI controls
+MIDI_ENABLE = yes            # MIDI controls
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.
 API_SYSEX_ENABLE = no
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
diff --git a/keyboards/planck/rev3/rules.mk b/keyboards/planck/rev3/rules.mk
index 3ed1445e4..559409682 100644
--- a/keyboards/planck/rev3/rules.mk
+++ b/keyboards/planck/rev3/rules.mk
@@ -1,4 +1,4 @@
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
 ifndef QUANTUM_DIR
        include ../../../Makefile
diff --git a/keyboards/planck/rev4/rules.mk b/keyboards/planck/rev4/rules.mk
index ed09f85a4..01d848e98 100644
--- a/keyboards/planck/rev4/rules.mk
+++ b/keyboards/planck/rev4/rules.mk
@@ -1,4 +1,4 @@
-AUDIO_ENABLE ?= yes           # Audio output on port C6
+AUDIO_ENABLE = yes           # Audio output on port C6
 ifndef QUANTUM_DIR
        include ../../../Makefile
diff --git a/keyboards/planck/rules.mk b/keyboards/planck/rules.mk
index 6776062f6..5580bb387 100644
--- a/keyboards/planck/rules.mk
+++ b/keyboards/planck/rules.mk
@@ -50,19 +50,19 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= no        # Commands for debug and configuration
+COMMAND_ENABLE = no        # Commands for debug and configuration
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= yes            # MIDI controls
+MIDI_ENABLE = yes            # MIDI controls
-AUDIO_ENABLE ?= yes           # Audio output on port C6
+AUDIO_ENABLE = yes           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.
 API_SYSEX_ENABLE = no
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
diff --git a/keyboards/preonic/rules.mk b/keyboards/preonic/rules.mk
index 6be5b55bc..b46c20193 100644
--- a/keyboards/preonic/rules.mk
+++ b/keyboards/preonic/rules.mk
@@ -52,19 +52,19 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
-BOOTMAGIC_ENABLE ?= no       # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no         # Console for debug(+400)
+CONSOLE_ENABLE = no         # Console for debug(+400)
-COMMAND_ENABLE ?= no        # Commands for debug and configuration
+COMMAND_ENABLE = no        # Commands for debug and configuration
-NKRO_ENABLE ?= no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-MIDI_ENABLE ?= yes            # MIDI controls
+MIDI_ENABLE = yes            # MIDI controls
-AUDIO_ENABLE ?= yes           # Audio output on port C6
+AUDIO_ENABLE = yes           # Audio output on port C6
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.
-API_SYSEX_ENABLE ?= no
+API_SYSEX_ENABLE = no
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
-\ No newline at end of file
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
+\ No newline at end of file
diff --git a/keyboards/roadkit/rules.mk b/keyboards/roadkit/rules.mk
index dbba6bace..786c9dc3e 100644
--- a/keyboards/roadkit/rules.mk
+++ b/keyboards/roadkit/rules.mk
@@ -53,17 +53,17 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= yes           # USB Nkey Rollover
+NKRO_ENABLE = yes           # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
diff --git a/keyboards/s60_x/default/rules.mk b/keyboards/s60_x/default/rules.mk
index aaa3764df..f0f0ad76b 100644
--- a/keyboards/s60_x/default/rules.mk
+++ b/keyboards/s60_x/default/rules.mk
@@ -1,8 +1,8 @@
-CONSOLE_ENABLE ?= no        # Console for debug(+400)
+CONSOLE_ENABLE = no        # Console for debug(+400)
-COMMAND_ENABLE ?= no        # Commands for debug and configuration
+COMMAND_ENABLE = no        # Commands for debug and configuration
-NKRO_ENABLE ?= no          # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no          # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= yes     # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes     # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE ?= no
+RGBLIGHT_ENABLE = no
 ifndef QUANTUM_DIR
        include ../../../Makefile
diff --git a/keyboards/s60_x/rgb/rules.mk b/keyboards/s60_x/rgb/rules.mk
index 6953cc6d6..a979632a9 100644
--- a/keyboards/s60_x/rgb/rules.mk
+++ b/keyboards/s60_x/rgb/rules.mk
@@ -1,8 +1,8 @@
-CONSOLE_ENABLE ?= no        # Console for debug(+400)
+CONSOLE_ENABLE = no        # Console for debug(+400)
-COMMAND_ENABLE ?= no        # Commands for debug and configuration
+COMMAND_ENABLE = no        # Commands for debug and configuration
-NKRO_ENABLE ?= yes          # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes          # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= yes     # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes     # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE ?= yes      # Enable RGB light
+RGBLIGHT_ENABLE = yes      # Enable RGB light
 ifndef QUANTUM_DIR
        include ../../../Makefile
diff --git a/keyboards/s60_x/rules.mk b/keyboards/s60_x/rules.mk
index 0c568efe9..5d4b28195 100644
--- a/keyboards/s60_x/rules.mk
+++ b/keyboards/s60_x/rules.mk
@@ -53,13 +53,13 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
-\ No newline at end of file
+AUDIO_ENABLE = no           # Audio output on port C6
+\ No newline at end of file
diff --git a/keyboards/s65_x/rules.mk b/keyboards/s65_x/rules.mk
index 9d8b559af..26a0a44b6 100644
--- a/keyboards/s65_x/rules.mk
+++ b/keyboards/s65_x/rules.mk
@@ -53,15 +53,15 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no        # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-NKRO_ENABLE ?= yes          # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes          # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= yes     # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes     # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE ?= yes      # Enable RGB light
+RGBLIGHT_ENABLE = yes      # Enable RGB light
diff --git a/keyboards/satan/keymaps/denolfe/Makefile b/keyboards/satan/keymaps/denolfe/Makefile
index c4adab737..04d274306 100644
--- a/keyboards/satan/keymaps/denolfe/Makefile
+++ b/keyboards/satan/keymaps/denolfe/Makefile
@@ -2,18 +2,18 @@
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no   # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no    # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes               # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-RGBLIGHT_ENABLE ?= no   # Enable keyboard underlight functionality (+4870)
+RGBLIGHT_ENABLE = no   # Enable keyboard underlight functionality (+4870)
-BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality (+1150)
+BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality (+1150)
-MIDI_ENABLE ?= no               # MIDI controls
+MIDI_ENABLE = no                # MIDI controls
-AUDIO_ENABLE ?= no
+AUDIO_ENABLE = no
-UNICODE_ENABLE ?= no            # Unicode
+UNICODE_ENABLE = no             # Unicode
-BLUETOOTH_ENABLE ?= no # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
 ifndef QUANTUM_DIR
        include ../../../../Makefile
diff --git a/keyboards/satan/rules.mk b/keyboards/satan/rules.mk
index 1102584d8..87a4a0595 100644
--- a/keyboards/satan/rules.mk
+++ b/keyboards/satan/rules.mk
@@ -52,15 +52,15 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= no  # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no   # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no   # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no    # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes               # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-RGBLIGHT_ENABLE ?= yes   # Enable keyboard underlight functionality (+4870)
+RGBLIGHT_ENABLE = yes   # Enable keyboard underlight functionality (+4870)
-BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality (+1150)
+BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality (+1150)
-MIDI_ENABLE ?= no               # MIDI controls
+MIDI_ENABLE = no                # MIDI controls
-AUDIO_ENABLE ?= no
+AUDIO_ENABLE = no
-UNICODE_ENABLE ?= no            # Unicode
+UNICODE_ENABLE = no             # Unicode
-BLUETOOTH_ENABLE ?= no # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
diff --git a/keyboards/sixkeyboard/rules.mk b/keyboards/sixkeyboard/rules.mk
index 2c99985a9..6aedc7148 100644
--- a/keyboards/sixkeyboard/rules.mk
+++ b/keyboards/sixkeyboard/rules.mk
@@ -55,16 +55,16 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= no          # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no           # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no           # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no            # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= no           # Audio control and System control(+450)
+EXTRAKEY_ENABLE = no            # Audio control and System control(+450)
-CONSOLE_ENABLE ?= no            # Console for debug(+400)
+CONSOLE_ENABLE = no             # Console for debug(+400)
-COMMAND_ENABLE ?= no            # Commands for debug and configuration
+COMMAND_ENABLE = no             # Commands for debug and configuration
-SLEEP_LED_ENABLE ?= no  # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no   # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= no                       # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no                        # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE ?= no  # Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = no   # Enable keyboard backlight functionality
-MIDI_ENABLE ?= no                       # MIDI controls
+MIDI_ENABLE = no                        # MIDI controls
-AUDIO_ENABLE ?= no
+AUDIO_ENABLE = no
-UNICODE_ENABLE ?= no            # Unicode
+UNICODE_ENABLE = no             # Unicode
-BLUETOOTH_ENABLE ?= no  # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no   # Enable Bluetooth with the Adafruit EZ-Key HID
 CUSTOM_MATRIX = yes
 \ No newline at end of file
diff --git a/keyboards/tada68/rules.mk b/keyboards/tada68/rules.mk
index d8ec42365..dd5b2bbe0 100644
--- a/keyboards/tada68/rules.mk
+++ b/keyboards/tada68/rules.mk
@@ -52,15 +52,15 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= no  # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no   # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= no   # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no    # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes   # Console for debug(+400)
+CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
-NKRO_ENABLE ?= yes              # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes               # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-RGBLIGHT_ENABLE ?= no   # Enable keyboard underlight functionality (+4870)
+RGBLIGHT_ENABLE = no   # Enable keyboard underlight functionality (+4870)
-BACKLIGHT_ENABLE ?= yes  # Enable keyboard backlight functionality (+1150)
+BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality (+1150)
-MIDI_ENABLE ?= no               # MIDI controls
+MIDI_ENABLE = no                # MIDI controls
-AUDIO_ENABLE ?= no
+AUDIO_ENABLE = no
-UNICODE_ENABLE ?= no            # Unicode
+UNICODE_ENABLE = no             # Unicode
-BLUETOOTH_ENABLE ?= no # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
diff --git a/keyboards/tiger_lily/rules.mk b/keyboards/tiger_lily/rules.mk
index dd2f4b6ee..fa53bea4d 100644
--- a/keyboards/tiger_lily/rules.mk
+++ b/keyboards/tiger_lily/rules.mk
@@ -51,21 +51,21 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= no            # USB Nkey Rollover
+NKRO_ENABLE = no            # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
-FAUXCLICKY_ENABLE ?= no      # Use buzzer to emulate clicky switches
+FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
 CUSTOM_MATRIX = yes
 SRC += matrix.c
 \ No newline at end of file
diff --git a/keyboards/tv44/rules.mk b/keyboards/tv44/rules.mk
index dbba6bace..786c9dc3e 100644
--- a/keyboards/tv44/rules.mk
+++ b/keyboards/tv44/rules.mk
@@ -53,17 +53,17 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= yes           # USB Nkey Rollover
+NKRO_ENABLE = yes           # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
+AUDIO_ENABLE = no           # Audio output on port C6
diff --git a/keyboards/vision_division/rules.mk b/keyboards/vision_division/rules.mk
index 6990960bf..5b739d4fd 100644
--- a/keyboards/vision_division/rules.mk
+++ b/keyboards/vision_division/rules.mk
@@ -54,17 +54,17 @@ OPT_DEFS += -DBOOTLOADER_SIZE=1024
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE ?= yes      # Virtual DIP switch configuration(+1000)
+BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
-EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
-CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
-COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-NKRO_ENABLE ?= yes           # USB Nkey Rollover
+NKRO_ENABLE = yes           # USB Nkey Rollover
-BACKLIGHT_ENABLE ?= yes      # Enable keyboard backlight functionality on B7 by default
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE = no            # MIDI controls
-UNICODE_ENABLE ?= no         # Unicode
+UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE ?= no           # Audio output on port C6
-\ No newline at end of file
+AUDIO_ENABLE = no           # Audio output on port C6
+\ No newline at end of file
diff --git a/keyboards/whitefox/rules.mk b/keyboards/whitefox/rules.mk
index 565381e16..fb34dbb9a 100644
--- a/keyboards/whitefox/rules.mk
+++ b/keyboards/whitefox/rules.mk
@@ -58,16 +58,16 @@ OPT_DEFS =
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE ?= yes # Virtual DIP switch configuration
+BOOTMAGIC_ENABLE = yes  # Virtual DIP switch configuration
 ## (Note that for BOOTMAGIC on Teensy LC you have to use a custom .ld script.)
-MOUSEKEY_ENABLE ?= yes  # Mouse keys
+MOUSEKEY_ENABLE = yes   # Mouse keys
-EXTRAKEY_ENABLE ?= yes  # Audio control and System control
+EXTRAKEY_ENABLE = yes   # Audio control and System control
-#CONSOLE_ENABLE ?= yes  # Console for debug
+#CONSOLE_ENABLE = yes   # Console for debug
-COMMAND_ENABLE ?= yes    # Commands for debug and configuration
+COMMAND_ENABLE = yes    # Commands for debug and configuration
-#SLEEP_LED_ENABLE ?= yes  # Breathing sleep LED during USB suspend
+#SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
-NKRO_ENABLE ?= yes          # USB Nkey Rollover
+NKRO_ENABLE = yes           # USB Nkey Rollover
-CUSTOM_MATRIX ?= yes # Custom matrix file
+CUSTOM_MATRIX = yes # Custom matrix file
-BACKLIGHT_ENABLE ?= yes
+BACKLIGHT_ENABLE = yes
-VISUALIZER_ENABLE ?= yes
+VISUALIZER_ENABLE = yes
 include $(KEYBOARD_PATH)/drivers/gdisp/IS31FL3731C/driver.mk