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| author | Sam Ravnborg <sam@neptun.(none)> | 2007-10-15 22:17:25 +0200 |
|---|---|---|
| committer | Sam Ravnborg <sam@neptun.(none)> | 2007-10-15 22:17:25 +0200 |
| commit | 06c5040cdb13d27adad118f2fbfae905a1911b37 (patch) | |
| tree | e5e62e04ca2d6f834aed9925a13869f730656139 /Makefile | |
| parent | 52bcc3308ae3344266f55bf98a22c1ac0201eda7 (diff) | |
| download | lwn-06c5040cdb13d27adad118f2fbfae905a1911b37.tar.gz lwn-06c5040cdb13d27adad118f2fbfae905a1911b37.zip | |
kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP
The variable CPPFLAGS is a wellknown variable and the usage by
kbuild may result in unexpected behaviour.
This patch replace use of CPPFLAGS with KBUILD_CPPFLAGS all over the
tree and enabling one to use:
make CPPFLAGS=...
to specify additional CPP commandline options.
Patch was tested on following architectures:
alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 13 |
1 files changed, 7 insertions, 6 deletions
@@ -318,7 +318,7 @@ LINUXINCLUDE := -Iinclude \ $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ -include include/linux/autoconf.h -CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) +KBUILD_CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -fno-strict-aliasing -fno-common \ @@ -334,7 +334,7 @@ export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS -export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS +export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE @@ -523,9 +523,10 @@ KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) # disable pointer signed / unsigned warnings in gcc 4.0 KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) -# Add user supplied AFLAGS and CFLAGS as the last assignments -KBUILD_AFLAGS += $(AFLAGS) -KBUILD_CFLAGS += $(CFLAGS) +# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments +KBUILD_CPPFLAGS += $(CPPFLAGS) +KBUILD_AFLAGS += $(AFLAGS) +KBUILD_CFLAGS += $(CFLAGS) # Use --build-id when available. LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ @@ -1507,7 +1508,7 @@ quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)) a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ - $(NOSTDINC_FLAGS) $(CPPFLAGS) \ + $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \ $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) quiet_cmd_as_o_S = AS $@ |