1 files changed, 21 insertions, 0 deletions

diff --git a/tmk_core/common.mk b/tmk_core/common.mk
index 8eac1734f..063115acb 100644
--- a/tmk_core/common.mk
+++ b/tmk_core/common.mk
@@ -82,15 +82,31 @@ else
     TMK_COMMON_SRC += $(COMMON_DIR)/magic.c
 endif
 
+SHARED_EP_ENABLE = no
+MOUSE_SHARED_EP ?= yes
+ifeq ($(strip $(KEYBOARD_SHARED_EP)), yes)
+    TMK_COMMON_DEFS += -DKEYBOARD_SHARED_EP
+    SHARED_EP_ENABLE = yes
+    # With the current usb_descriptor.c code,
+    # you can't share kbd without sharing mouse;
+    # that would be a very unexpected use case anyway
+    MOUSE_SHARED_EP = yes
+endif
 
 ifeq ($(strip $(MOUSEKEY_ENABLE)), yes)
     TMK_COMMON_SRC += $(COMMON_DIR)/mousekey.c
     TMK_COMMON_DEFS += -DMOUSEKEY_ENABLE
     TMK_COMMON_DEFS += -DMOUSE_ENABLE
+
+    ifeq ($(strip $(MOUSE_SHARED_EP)), yes)
+        TMK_COMMON_DEFS += -DMOUSE_SHARED_EP
+        SHARED_EP_ENABLE = yes
+    endif
 endif
 
 ifeq ($(strip $(EXTRAKEY_ENABLE)), yes)
     TMK_COMMON_DEFS += -DEXTRAKEY_ENABLE
+    SHARED_EP_ENABLE = yes
 endif
 
 ifeq ($(strip $(RAW_ENABLE)), yes)
@@ -111,6 +127,7 @@ endif
 
 ifeq ($(strip $(NKRO_ENABLE)), yes)
     TMK_COMMON_DEFS += -DNKRO_ENABLE
+    SHARED_EP_ENABLE = yes
 endif
 
 ifeq ($(strip $(USB_6KRO_ENABLE)), yes)
@@ -182,6 +199,10 @@ ifeq ($(strip $(KEYMAP_SECTION_ENABLE)), yes)
     endif
 endif
 
+ifeq ($(strip $(SHARED_EP_ENABLE)), yes)
+    TMK_COMMON_DEFS += -DSHARED_EP_ENABLE
+endif
+
 # Bootloader address
 ifdef STM32_BOOTLOADER_ADDRESS
     TMK_COMMON_DEFS += -DSTM32_BOOTLOADER_ADDRESS=$(STM32_BOOTLOADER_ADDRESS)