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Makefile: support user-specified CPPFLAGS

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This commit is contained in:
Eric Biggers 2018-12-23 13:13:28 -06:00
parent dfd839df4e
commit 6e7813e8fa
1 changed files with 10 additions and 7 deletions
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17
Makefile
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@ -29,6 +29,8 @@ override CFLAGS := \
$(call cc-option,-Wstrict-prototypes) \
$(call cc-option,-Wvla)
# We don't define any CPPFLAGS, but support the user specifying it.
##############################################################################
SOVERSION := 0
@ -120,11 +122,12 @@ SHARED_LIB_OBJ := $(LIB_SRC:.c=.shlib.o)
# Compile static library object files
$(STATIC_LIB_OBJ): %.o: %.c $(LIB_HEADERS) $(COMMON_HEADERS) .lib-cflags
$(QUIET_CC) $(CC) -o $@ -c $(LIB_CFLAGS) $<
$(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(LIB_CFLAGS) $<
# Compile shared library object files
$(SHARED_LIB_OBJ): %.shlib.o: %.c $(LIB_HEADERS) $(COMMON_HEADERS) .lib-cflags
$(QUIET_CC) $(CC) -o $@ -c $(LIB_CFLAGS) $(SHARED_LIB_CFLAGS) -DLIBDEFLATE_DLL $<
$(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(LIB_CFLAGS) \
$(SHARED_LIB_CFLAGS) -DLIBDEFLATE_DLL $<
# Create static library
$(STATIC_LIB):$(STATIC_LIB_OBJ)
@ -146,9 +149,9 @@ libdeflate.so:$(SHARED_LIB)
DEFAULT_TARGETS += libdeflate.so
endif
# Rebuild if CC or LIB_CFLAGS changed
# Rebuild if CC, LIB_CFLAGS, or CPPFLAGS changed
.lib-cflags: FORCE
@flags='$(CC):$(LIB_CFLAGS)'; \
@flags='$(CC):$(LIB_CFLAGS):$(CPPFLAGS)'; \
if [ "$$flags" != "`cat $@ 2>/dev/null`" ]; then \
[ -e $@ ] && echo "Rebuilding library due to new compiler flags"; \
echo "$$flags" > $@; \
@ -186,7 +189,7 @@ programs/config.h:programs/detect.sh .prog-cflags
# Compile program object files
$(PROG_OBJ): %.o: %.c $(PROG_COMMON_HEADERS) $(COMMON_HEADERS) .prog-cflags
$(QUIET_CC) $(CC) -o $@ -c $(PROG_CFLAGS) $<
$(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(PROG_CFLAGS) $<
# Link the programs.
#
@ -211,9 +214,9 @@ endif
DEFAULT_TARGETS += gunzip$(PROG_SUFFIX)
# Rebuild if CC or PROG_CFLAGS changed
# Rebuild if CC, PROG_CFLAGS, or CPPFLAGS changed
.prog-cflags: FORCE
@flags='$(CC):$(PROG_CFLAGS)'; \
@flags='$(CC):$(PROG_CFLAGS):$(CPPFLAGS)'; \
if [ "$$flags" != "`cat $@ 2>/dev/null`" ]; then \
[ -e $@ ] && echo "Rebuilding programs due to new compiler flags"; \
echo "$$flags" > $@; \