Force compilation and linking when options changes
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parent
e58e9af2ab
commit
84bfb19554
1 changed files with 28 additions and 9 deletions
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@ -284,8 +284,8 @@ GENDEPFLAGS = -MMD -MP -MF $(patsubst %.o,%.td,$@)
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# Combine all necessary flags and optional flags.
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# Add target processor to flags.
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# You can give extra flags at 'make' command line like: make EXTRAFLAGS=-DFOO=bar
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ALL_CFLAGS = $(MCUFLAGS) $(CFLAGS) $(GENDEPFLAGS) $(EXTRAFLAGS)
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ALL_CPPFLAGS = $(MCUFLAGS) -x c++ $(CPPFLAGS) $(GENDEPFLAGS) $(EXTRAFLAGS)
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ALL_CFLAGS = $(MCUFLAGS) $(CFLAGS) $(EXTRAFLAGS)
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ALL_CPPFLAGS = $(MCUFLAGS) -x c++ $(CPPFLAGS) $(EXTRAFLAGS)
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ALL_ASFLAGS = $(MCUFLAGS) -x assembler-with-cpp $(ASFLAGS) $(EXTRAFLAGS)
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MOVE_DEP = mv -f $(patsubst %.o,%.td,$@) $(patsubst %.o,%.d,$@)
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@ -385,32 +385,51 @@ BEGIN = gccversion check_submodule sizebefore
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# Link: create ELF output file from object files.
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.SECONDARY : $(BUILD_DIR)/$(TARGET).elf
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.PRECIOUS : $(OBJ)
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%.elf: $(OBJ) | $(BEGIN)
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# Note the obj.txt depeendency is there to force linking if a source file is deleted
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%.elf: $(OBJ) $(OBJDIR)/cflags.txt $(OBJDIR)/ldflags.txt $(OBJDIR)/obj.txt | $(BEGIN)
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@$(SILENT) || printf "$(MSG_LINKING) $@" | $(AWK_CMD)
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$(eval CMD=$(CC) $(ALL_CFLAGS) $^ --output $@ $(LDFLAGS))
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$(eval CMD=$(CC) $(ALL_CFLAGS) $(filter-out %.txt,$^) --output $@ $(LDFLAGS))
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@$(BUILD_CMD)
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define GEN_OBJRULE
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# Compile: create object files from C source files.
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$1/%.o : %.c $1/%.d | $(BEGIN)
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$1/%.o : %.c $1/%.d $1/cflags.txt | $(BEGIN)
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@mkdir -p $$(@D)
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@$$(SILENT) || printf "$$(MSG_COMPILING) $$<" | $$(AWK_CMD)
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$$(eval CMD=$$(CC) -c $$(ALL_CFLAGS) $$< -o $$@ && $$(MOVE_DEP))
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$$(eval CMD=$$(CC) -c $$(ALL_CFLAGS) $$(GENDEPFLAGS) $$< -o $$@ && $$(MOVE_DEP))
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@$$(BUILD_CMD)
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# Compile: create object files from C++ source files.
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$1/%.o : %.cpp $1/%.d | $(BEGIN)
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$1/%.o : %.cpp $1/%.d $1/cppflags.txt | $(BEGIN)
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@mkdir -p $$(@D)
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@$$(SILENT) || printf "$$(MSG_COMPILING_CPP) $$<" | $$(AWK_CMD)
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$$(eval CMD=$$(CC) -c $$(ALL_CPPFLAGS) $$< -o $$@ && $$(MOVE_DEP))
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$$(eval CMD=$$(CC) -c $$(ALL_CPPFLAGS) $$(GENDEPFLAGS) $$< -o $$@ && $$(MOVE_DEP))
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@$(BUILD_CMD)
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# Assemble: create object files from assembler source files.
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$1/%.o : %.S | $(BEGIN)
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$1/%.o : %.S $1/asflags.txt | $(BEGIN)
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@mkdir -p $$(@D)
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@$(SILENT) || printf "$$(MSG_ASSEMBLING) $$<" | $$(AWK_CMD)
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$$(eval CMD=$$(CC) -c $$(ALL_ASFLAGS) $$< -o $$@)
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@$$(BUILD_CMD)
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$1/force:
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$1/cflags.txt: $1/force
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echo '$$(ALL_CFLAGS)' | cmp -s - $$@ || echo '$$(ALL_CFLAGS)' > $$@
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$1/cppflags.txt: $1/force
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echo '$$(ALL_CPPFLAGS)' | cmp -s - $$@ || echo '$$(ALL_CPPFLAGS)' > $$@
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$1/asflags.txt: $1/force
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echo '$$(ALL_ASFLAGS)' | cmp -s - $$@ || echo '$$(ALL_ASFLAGS)' > $$@
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$1/ldflags.txt: $1/force
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echo '$$(LDFLAGS)' | cmp -s - $$@ || echo '$$(LDFLAGS)' > $$@
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$1/obj.txt: $1/force
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echo '$$(OBJ)' | cmp -s - $$@ || echo '$$(OBJ)' > $$@
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endef
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# We have to use static rules for the .d files for some reason
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