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samples/bpf: Use own EXTRA_CFLAGS for clang commands 

It can overlap with CFLAGS used for libraries built with gcc if
not now then in next patches. Correct it here for simplicity.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20191011002808.28206-5-ivan.khoronzhuk@linaro.org
This commit is contained in:
Ivan Khoronzhuk 2019-10-11 03:27:57 +03:00 committed by Alexei Starovoitov
parent 518c13401e
commit 2a560df7c1
1 changed files with 5 additions and 4 deletions
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9
samples/bpf/Makefile
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@ -218,10 +218,10 @@ BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \
/bin/rm -f ./llvm_btf_verify.o) /bin/rm -f ./llvm_btf_verify.o)
ifneq ($(BTF_LLVM_PROBE),) ifneq ($(BTF_LLVM_PROBE),)
EXTRA_CFLAGS += -g BPF_EXTRA_CFLAGS += -g
else else
ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),) ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),)
EXTRA_CFLAGS += -g BPF_EXTRA_CFLAGS += -g
LLC_FLAGS += -mattr=dwarfris LLC_FLAGS += -mattr=dwarfris
DWARF2BTF = y DWARF2BTF = y
endif endif
@ -280,8 +280,9 @@ $(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm_kern.h
# useless for BPF samples. # useless for BPF samples.
$(obj)/%.o: $(src)/%.c $(obj)/%.o: $(src)/%.c
@echo " CLANG-bpf " $@ @echo " CLANG-bpf " $@
$(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \ $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(BPF_EXTRA_CFLAGS) \
-I$(srctree)/tools/testing/selftests/bpf/ -I$(srctree)/tools/lib/bpf/ \ -I$(obj) -I$(srctree)/tools/testing/selftests/bpf/ \
-I$(srctree)/tools/lib/bpf/ \
-D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \ -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \
-D__TARGET_ARCH_$(SRCARCH) -Wno-compare-distinct-pointer-types \ -D__TARGET_ARCH_$(SRCARCH) -Wno-compare-distinct-pointer-types \
-Wno-gnu-variable-sized-type-not-at-end \ -Wno-gnu-variable-sized-type-not-at-end \