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| author | Michal Marek <mmarek@suse.cz> | 2015-07-01 17:19:30 +0200 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2015-07-06 11:09:00 +0530 |
| commit | 61754c18752ffb78145671e94f053fb202fff041 (patch) | |
| tree | 30468e47109348f877c50a8c2ae176cd735ad5e7 /Makefile | |
| parent | b607eddd7122595bbcf49c00192faf3e49b142d3 (diff) | |
| download | lwn-61754c18752ffb78145671e94f053fb202fff041.tar.gz lwn-61754c18752ffb78145671e94f053fb202fff041.zip | |
kbuild: Allow arch Makefiles to override {cpp,ld,c}flags
Since commit a1c48bb1 (Makefile: Fix unrecognized cross-compiler command
line options), the arch Makefile is included earlier by the main
Makefile, preventing the arc architecture to set its -O3 compiler
option. Since there might be more use cases for an arch Makefile to
fine-tune the options, add support for ARCH_CPPFLAGS, ARCH_AFLAGS and
ARCH_CFLAGS variables that are appended to the respective kbuild
variables. The user still has the final say via the KCPPFLAGS, KAFLAGS
and KCFLAGS variables.
Reported-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: stable@vger.kernel.org # 3.16+
Signed-off-by: Michal Marek <mmarek@suse.com>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 9 |
1 files changed, 5 insertions, 4 deletions
@@ -780,10 +780,11 @@ endif include scripts/Makefile.kasan include scripts/Makefile.extrawarn -# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments -KBUILD_CPPFLAGS += $(KCPPFLAGS) -KBUILD_AFLAGS += $(KAFLAGS) -KBUILD_CFLAGS += $(KCFLAGS) +# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the +# last assignments +KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) +KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) +KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) # Use --build-id when available. LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ |