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: a808578 ("samples: bpf: trivial eBPF program in C") Signed-off-by: Brenden Blanco <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
pmladek · May 13, 2015 · b88c06e · b88c06e
1 parent 1ecc7b7
commit b88c06e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
@@ -44,7 +44,7 @@ HOSTLOADLIBES_tracex4 += -lelf -lrt
 # point this to your LLVM backend with bpf support
 LLC=$(srctree)/tools/bpf/llvm/bld/Debug+Asserts/bin/llc
 
-%.o: %.c
+$(obj)/%.o: $(src)/%.c
 	clang $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \
 		-D__KERNEL__ -Wno-unused-value -Wno-pointer-sign \
 		-O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@