build: Separate CPPFLAGS and CFLAGS.

The CPPFLAGS variable should consist of preprocessor options only and
should not contain any compiler options. Clearly this is not the case
at the moment.

This commit cleans up the mess and separates the per target CFLAGS
settings from the CPPFLAGS settings.

diff --git a/Makefile.real b/Makefile.real
index 608e89902b288de49531b62f3aec246c2f8226ff..2b245dae188d6188c61f2b59aae0d2eefb20e841 100644 (file)
--- a/Makefile.real
+++ b/Makefile.real
@@ -80,36 +80,39 @@ $(subst p,P,$(subst q,Q,$(subst r,R,$(subst s,S,$(subst t,T,\
 $(subst u,U,$(subst v,V,$(subst w,W,$(subst x,X,$(subst y,Y,\
 $(subst z,Z,$1))))))))))))))))))))))))))
 
-STRICT_CFLAGS += -g -Wunused -Wundef -W
-STRICT_CFLAGS += -Wredundant-decls
-STRICT_CFLAGS += -Wall -Wno-sign-compare -Wno-unknown-pragmas
-STRICT_CFLAGS += -Wformat-security
-STRICT_CFLAGS += -Wmissing-format-attribute
-
-ifeq ($(uname_s),Linux)
-       CPPFLAGS += -fdata-sections -ffunction-sections
-       LDFLAGS += -Wl,--gc-sections
-       CPPFLAGS += -Wstrict-prototypes
-       CPPFLAGS += -Wshadow
-       # causes warnings on *BSD for the feature test macros
-       CPPFLAGS += -Wunused-macros
-endif
-CPPFLAGS += -Os
-CPPFLAGS += -Wuninitialized
-CPPFLAGS += -Wchar-subscripts
 CPPFLAGS += -DBINDIR='"$(BINDIR)"'
 CPPFLAGS += -DBUILD_DATE='"$(build_date)"'
 CPPFLAGS += -DUNAME_RS='"$(uname_rs)"'
 CPPFLAGS += -DCC_VERSION='"$(cc_version)"'
-CPPFLAGS += -Werror-implicit-function-declaration
-CPPFLAGS += -Wmissing-noreturn
-CPPFLAGS += -Wbad-function-cast
-CPPFLAGS += -fno-strict-aliasing
 CPPFLAGS += -DMAIN_INPUT_FILE_IS_$(*F)
 CPPFLAGS += $(arch_cppflags)
 CPPFLAGS += -I/usr/local/include
 CPPFLAGS += -I$(cmdline_dir)
 
+CFLAGS += -Os
+CFLAGS += -Wuninitialized
+CFLAGS += -Wchar-subscripts
+CFLAGS += -Werror-implicit-function-declaration
+CFLAGS += -Wmissing-noreturn
+CFLAGS += -Wbad-function-cast
+CFLAGS += -fno-strict-aliasing
+
+ifeq ($(uname_s),Linux)
+       CFLAGS += -fdata-sections -ffunction-sections
+       CFLAGS += -Wstrict-prototypes
+       CFLAGS += -Wshadow
+       # causes warnings on *BSD for the feature test macros
+       CFLAGS += -Wunused-macros
+       LDFLAGS += -Wl,--gc-sections
+endif
+
+STRICT_CFLAGS = $(CFLAGS)
+STRICT_CFLAGS += -g -Wunused -Wundef -W
+STRICT_CFLAGS += -Wredundant-decls
+STRICT_CFLAGS += -Wall -Wno-sign-compare -Wno-unknown-pragmas
+STRICT_CFLAGS += -Wformat-security
+STRICT_CFLAGS += -Wmissing-format-attribute
+
 LDFLAGS += $(clock_gettime_ldflags)
 
 # To put more focus on warnings, be less verbose as default
@@ -169,21 +172,18 @@ error2.h: $(hostbin_dir)/error2 Makefile
        @echo "$(object_executable_matrix)" | $< > $@
 
 $(object_dir)/%.o: %.c | $(object_dir)
+
 $(object_dir)/opus%.o $(dep_dir)/opus%.d: CPPFLAGS += $(opus_cppflags)
 $(object_dir)/gui%.o $(dep_dir)/gui%.d: CPPFLAGS += $(curses_cppflags)
 $(object_dir)/spx%.o $(dep_dir)/spx%.d: CPPFLAGS += $(speex_cppflags)
-$(object_dir)/%.cmdline.o: CPPFLAGS += -Wno-unused-function
-
 $(object_dir)/mp3_afh.o $(dep_dir)/mp3_afh.d: CPPFLAGS += $(id3tag_cppflags)
 $(object_dir)/crypt.o $(dep_dir)/crypt.d: CPPFLAGS += $(openssl_cppflags)
 $(object_dir)/gcrypt.o $(dep_dir)/gcrypt.d: CPPFLAGS += $(gcrypt_cppflags)
+$(object_dir)/ao_write.o $(dep_dir)/ao_write.d: CPPFLAGS += $(ao_cppflags)
 
 $(object_dir)/mp3dec_filter.o $(dep_dir)/mp3dec_filter.d \
 : CPPFLAGS += $(mad_cppflags)
 
-$(object_dir)/compress_filter.o: CPPFLAGS += -O3
-$(object_dir)/ao_write.o $(dep_dir)/ao_write.d: CPPFLAGS += $(ao_cppflags)
-
 $(object_dir)/aacdec_filter.o $(dep_dir)/aacdec_filter.d \
 $(object_dir)/aac_common.o $(dep_dir)/aac_common.d \
 $(object_dir)/aac_afh.o $(dep_dir)/aac_afh.d \
@@ -219,13 +219,16 @@ $(object_dir)/send_common.o $(dep_dir)/send_common.d \
 $(object_dir)/mm.o $(dep_dir)/mm.d \
 : CPPFLAGS += $(osl_cppflags)
 
+$(object_dir)/%.cmdline.o: CFLAGS += -Wno-unused-function
+$(object_dir)/compress_filter.o: CFLAGS += -O3
+
 $(object_dir)/%.o: %.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
        $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(STRICT_CFLAGS) $<
 
 $(object_dir)/%.cmdline.o: $(cmdline_dir)/%.cmdline.c $(cmdline_dir)/%.cmdline.h | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $<
 
 $(dep_dir)/%.cmdline.d: $(cmdline_dir)/%.cmdline.c error2.h | $(dep_dir)
        @[ -z "$(Q)" ] || echo 'DEP $<'