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| author | Fred Sundvik <fsundvik@gmail.com> | 2016-07-30 21:07:01 +0200 |
|---|---|---|
| committer | Fred Sundvik <fsundvik@gmail.com> | 2016-07-31 12:42:04 +0200 |
| commit | 84bfb195545b0ba527f34c386d15d6f732a28de7 (patch) | |
| tree | 25d15ed72e3fb4d5b820dcc5819dc05897751e2b /tmk_core/rules.mk | |
| parent | e58e9af2ab2c0e66a8456b48d46f4d71a66af27a (diff) | |
| download | qmk_firmware-84bfb195545b0ba527f34c386d15d6f732a28de7.tar.gz qmk_firmware-84bfb195545b0ba527f34c386d15d6f732a28de7.tar.xz | |
Force compilation and linking when options changes
Diffstat (limited to 'tmk_core/rules.mk')
| -rw-r--r-- | tmk_core/rules.mk | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/tmk_core/rules.mk b/tmk_core/rules.mk index 8acb43932..ebcd372ca 100644 --- a/tmk_core/rules.mk +++ b/tmk_core/rules.mk @@ -284,8 +284,8 @@ GENDEPFLAGS = -MMD -MP -MF $(patsubst %.o,%.td,$@) # Combine all necessary flags and optional flags. # Add target processor to flags. # You can give extra flags at 'make' command line like: make EXTRAFLAGS=-DFOO=bar -ALL_CFLAGS = $(MCUFLAGS) $(CFLAGS) $(GENDEPFLAGS) $(EXTRAFLAGS) -ALL_CPPFLAGS = $(MCUFLAGS) -x c++ $(CPPFLAGS) $(GENDEPFLAGS) $(EXTRAFLAGS) +ALL_CFLAGS = $(MCUFLAGS) $(CFLAGS) $(EXTRAFLAGS) +ALL_CPPFLAGS = $(MCUFLAGS) -x c++ $(CPPFLAGS) $(EXTRAFLAGS) ALL_ASFLAGS = $(MCUFLAGS) -x assembler-with-cpp $(ASFLAGS) $(EXTRAFLAGS) MOVE_DEP = mv -f $(patsubst %.o,%.td,$@) $(patsubst %.o,%.d,$@) @@ -385,32 +385,51 @@ BEGIN = gccversion check_submodule sizebefore # Link: create ELF output file from object files. .SECONDARY : $(BUILD_DIR)/$(TARGET).elf .PRECIOUS : $(OBJ) -%.elf: $(OBJ) | $(BEGIN) +# Note the obj.txt depeendency is there to force linking if a source file is deleted +%.elf: $(OBJ) $(OBJDIR)/cflags.txt $(OBJDIR)/ldflags.txt $(OBJDIR)/obj.txt | $(BEGIN) @$(SILENT) || printf "$(MSG_LINKING) $@" | $(AWK_CMD) - $(eval CMD=$(CC) $(ALL_CFLAGS) $^ --output $@ $(LDFLAGS)) + $(eval CMD=$(CC) $(ALL_CFLAGS) $(filter-out %.txt,$^) --output $@ $(LDFLAGS)) @$(BUILD_CMD) define GEN_OBJRULE # Compile: create object files from C source files. -$1/%.o : %.c $1/%.d | $(BEGIN) +$1/%.o : %.c $1/%.d $1/cflags.txt | $(BEGIN) @mkdir -p $$(@D) @$$(SILENT) || printf "$$(MSG_COMPILING) $$<" | $$(AWK_CMD) - $$(eval CMD=$$(CC) -c $$(ALL_CFLAGS) $$< -o $$@ && $$(MOVE_DEP)) + $$(eval CMD=$$(CC) -c $$(ALL_CFLAGS) $$(GENDEPFLAGS) $$< -o $$@ && $$(MOVE_DEP)) @$$(BUILD_CMD) # Compile: create object files from C++ source files. -$1/%.o : %.cpp $1/%.d | $(BEGIN) +$1/%.o : %.cpp $1/%.d $1/cppflags.txt | $(BEGIN) @mkdir -p $$(@D) @$$(SILENT) || printf "$$(MSG_COMPILING_CPP) $$<" | $$(AWK_CMD) - $$(eval CMD=$$(CC) -c $$(ALL_CPPFLAGS) $$< -o $$@ && $$(MOVE_DEP)) + $$(eval CMD=$$(CC) -c $$(ALL_CPPFLAGS) $$(GENDEPFLAGS) $$< -o $$@ && $$(MOVE_DEP)) @$(BUILD_CMD) # Assemble: create object files from assembler source files. -$1/%.o : %.S | $(BEGIN) +$1/%.o : %.S $1/asflags.txt | $(BEGIN) @mkdir -p $$(@D) @$(SILENT) || printf "$$(MSG_ASSEMBLING) $$<" | $$(AWK_CMD) $$(eval CMD=$$(CC) -c $$(ALL_ASFLAGS) $$< -o $$@) @$$(BUILD_CMD) + +$1/force: + +$1/cflags.txt: $1/force + echo '$$(ALL_CFLAGS)' | cmp -s - $$@ || echo '$$(ALL_CFLAGS)' > $$@ + +$1/cppflags.txt: $1/force + echo '$$(ALL_CPPFLAGS)' | cmp -s - $$@ || echo '$$(ALL_CPPFLAGS)' > $$@ + +$1/asflags.txt: $1/force + echo '$$(ALL_ASFLAGS)' | cmp -s - $$@ || echo '$$(ALL_ASFLAGS)' > $$@ + +$1/ldflags.txt: $1/force + echo '$$(LDFLAGS)' | cmp -s - $$@ || echo '$$(LDFLAGS)' > $$@ + +$1/obj.txt: $1/force + echo '$$(OBJ)' | cmp -s - $$@ || echo '$$(OBJ)' > $$@ + endef # We have to use static rules for the .d files for some reason |