Remove all Makefiles from the keyboards directory. (#1660)

* Remove all Makefiles from the keyboards directory.

* update keymaps added in the last 8 days

* Ignore keyboard/keymap makefiles

* update hand_wire to reflect our new Makefile-less reality

* Update the make guide to reflect the new reality

* move planck keymap options to rules.mk

* update planck keymaps 4real

* trigger travis

* add back build_keyboard.mk

* restore changes to build_keyboard

1 files changed, 6 insertions, 4 deletions

diff --git a/Makefile b/Makefile
index f79244951..1ca9876a2 100644
--- a/Makefile
+++ b/Makefile
@@ -89,7 +89,7 @@ ifeq ($(CURRENT_PATH_ELEMENT),keyboards)
 endif
 
 # Only consider folders with makefiles, to prevent errors in case there are extra folders
-KEYBOARDS := $(notdir $(patsubst %/Makefile,%,$(wildcard $(ROOT_DIR)/keyboards/*/Makefile)))
+KEYBOARDS := $(notdir $(patsubst %/rules.mk,%,$(wildcard $(ROOT_DIR)/keyboards/*/rules.mk)))
 
 #Compatibility with the old make variables, anything you specify directly on the command line
 # always overrides the detected folders
@@ -261,7 +261,7 @@ endef
 define PARSE_KEYBOARD
     CURRENT_KB := $1
     # A subproject is any keyboard subfolder with a makefile
-    SUBPROJECTS := $$(notdir $$(patsubst %/Makefile,%,$$(wildcard $(ROOT_DIR)/keyboards/$$(CURRENT_KB)/*/Makefile)))
+    SUBPROJECTS := $$(notdir $$(patsubst %/rules.mk,%,$$(wildcard $(ROOT_DIR)/keyboards/$$(CURRENT_KB)/*/rules.mk)))
     # if the rule starts with allsp, then continue with looping over all subprojects
     ifeq ($$(call COMPARE_AND_REMOVE_FROM_RULE,allsp),true)
         $$(eval $$(call PARSE_ALL_SUBPROJECTS))
@@ -300,7 +300,9 @@ define PARSE_SUBPROJECT
     endif
     ifeq ($$(CURRENT_SP),defaultsp)
         SUBPROJECT_DEFAULT=
-        $$(eval include $(ROOT_DIR)/keyboards/$$(CURRENT_KB)/Makefile)
+        ifneq ("$(wildcard $(ROOT_DIR)/keyboards/$$(CURRENT_KB)/subproject.mk)","")
+            $$(eval include $(ROOT_DIR)/keyboards/$$(CURRENT_KB)/subproject.mk)
+        endif
         CURRENT_SP := $$(SUBPROJECT_DEFAULT)
     endif
     # If current subproject is empty (the default was not defined), and we have a list of subproject
@@ -503,7 +505,7 @@ if [ $$error_occurred -gt 0 ]; then $(HANDLE_ERROR); fi;
 endef
 
 # Allow specifying just the subproject, in the keyboard directory, which will compile all keymaps
-SUBPROJECTS := $(notdir $(patsubst %/Makefile,%,$(wildcard ./*/Makefile)))
+SUBPROJECTS := $(notdir $(patsubst %/rules.mk,%,$(wildcard ./*/rules.mk)))
 .PHONY: $(SUBPROJECTS)
 $(SUBPROJECTS): %: %-allkm