forked from Minki/linux
samples/bpf: fix in-source build of samples with clang
in-source build of 'make samples/bpf/' was incorrectly
using default compiler instead of invoking clang/llvm.
out-of-source build was ok.
Fixes: a80857822b
("samples: bpf: trivial eBPF program in C")
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -44,7 +44,7 @@ HOSTLOADLIBES_tracex4 += -lelf -lrt
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# point this to your LLVM backend with bpf support
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LLC=$(srctree)/tools/bpf/llvm/bld/Debug+Asserts/bin/llc
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%.o: %.c
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$(obj)/%.o: $(src)/%.c
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clang $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \
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-D__KERNEL__ -Wno-unused-value -Wno-pointer-sign \
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-O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@
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