EMTime/libopencm3-examples
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rules: use TGT_xxx to avoid trampling user vars

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As in the main library, instead of constructing and making our own CFLAGS
CXXFLAGS and LDFLAGS variables, use TGT_ for ones we construct, and include any
user provided variables afterwards.
This commit is contained in:
Karl Palsson
2016-04-16 22:17:48 +00:00
parent 4b772a4437
commit 140d0864b8
1 changed files with 23 additions and 20 deletions
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43
examples/Makefile.rules
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@@ -79,35 +79,38 @@ SCRIPT_DIR = $(OPENCM3_DIR)/scripts
###############################################################################
# C flags
CFLAGS += $(OPT) -g
CFLAGS += -Wextra -Wshadow -Wimplicit-function-declaration
CFLAGS += -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes
CFLAGS += -fno-common -ffunction-sections -fdata-sections
TGT_CFLAGS += $(OPT) -g
TGT_CFLAGS += $(ARCH_FLAGS)
TGT_CFLAGS += -Wextra -Wshadow -Wimplicit-function-declaration
TGT_CFLAGS += -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes
TGT_CFLAGS += -fno-common -ffunction-sections -fdata-sections
###############################################################################
# C++ flags
CXXFLAGS += $(OPT) -g
CXXFLAGS += -Wextra -Wshadow -Wredundant-decls -Weffc++
CXXFLAGS += -fno-common -ffunction-sections -fdata-sections
TGT_CXXFLAGS += $(OPT) -g
TGT_CXXFLAGS += $(ARCH_FLAGS)
TGT_CXXFLAGS += -Wextra -Wshadow -Wredundant-decls -Weffc++
TGT_CXXFLAGS += -fno-common -ffunction-sections -fdata-sections
###############################################################################
# C & C++ preprocessor common flags
CPPFLAGS += -MD
CPPFLAGS += -Wall -Wundef
CPPFLAGS += -I$(INCLUDE_DIR) $(DEFS)
TGT_CPPFLAGS += -MD
TGT_CPPFLAGS += -Wall -Wundef
TGT_CPPFLAGS += -I$(INCLUDE_DIR) $(DEFS)
###############################################################################
# Linker flags
LDFLAGS += --static -nostartfiles
LDFLAGS += -L$(LIB_DIR)
LDFLAGS += -T$(LDSCRIPT)
LDFLAGS += -Wl,-Map=$(*).map
LDFLAGS += -Wl,--gc-sections
TGT_LDFLAGS += --static -nostartfiles
TGT_LDFLAGS += -L$(LIB_DIR)
TGT_LDFLAGS += -T$(LDSCRIPT)
TGT_LDFLAGS += $(ARCH_FLAGS)
TGT_LDFLAGS += -Wl,-Map=$(*).map
TGT_LDFLAGS += -Wl,--gc-sections
ifeq ($(V),99)
LDFLAGS += -Wl,--print-gc-sections
TGT_LDFLAGS += -Wl,--print-gc-sections
endif
###############################################################################
@@ -161,19 +164,19 @@ $(LDSCRIPT):
%.elf %.map: $(OBJS) $(LDSCRIPT)
@#printf " LD $(*).elf\n"
$(Q)$(LD) $(LDFLAGS) $(ARCH_FLAGS) $(OBJS) $(LDLIBS) -o $(*).elf
$(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $(*).elf
%.o: %.c
@#printf " CC $(*).c\n"
$(Q)$(CC) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -o $(*).o -c $(*).c
$(Q)$(CC) $(TGT_CFLAGS) $(CFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $(*).o -c $(*).c
%.o: %.cxx
@#printf " CXX $(*).cxx\n"
$(Q)$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -o $(*).o -c $(*).cxx
$(Q)$(CXX) $(TGT_CXXFLAGS) $(CXXFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $(*).o -c $(*).cxx
%.o: %.cpp
@#printf " CXX $(*).cpp\n"
$(Q)$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -o $(*).o -c $(*).cpp
$(Q)$(CXX) $(TGT_CXXFLAGS) $(CXXFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $(*).o -c $(*).cpp
clean:
@#printf " CLEAN\n"