Messages in this thread | | | Date | Tue, 26 Jan 2016 22:08:02 -0800 | From | Alexei Starovoitov <> | Subject | Re: make samples/bpf/ using gcc instead of clang/llvm |
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On Tue, Jan 26, 2016 at 09:51:54PM -0800, Joel Fernandes wrote: > Hi Brendan, Alexei, > > I noticed your patch fixing the $subject issue. > > https://patchwork.ozlabs.org/patch/471118/ > > However, I still see make samples/bpf/ using gcc instead of clang. > > Here's a verbose kbuild output of make samples/bpf/. My kernel version > is 4.4. It looks to me like Kbuild is ignoring the Makefile in > samples/bpf/. Let me know if you spot anything of the ordinary? > Thanks. > > make KBUILD_VERBOSE=1 samples/bpf/ > [..] > make KBUILD_MODULES=1 \ > -f /home/joel/data/repo/linux-4.4/scripts/Makefile.build obj=samples/bpf > (cat /dev/null; ) > samples/bpf/modules.order > gcc -Wp,-MD,samples/bpf/.test_verifier.o.d -Isamples/bpf -Wall > -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer > -std=gnu89 -I/home/joel/data/repo/linux-4.4/./usr/include > -I./usr/include -c -o samples/bpf/test_verifier.o > /home/joel/data/repo/linux-4.4/samples/bpf/test_verifier.c > /home/joel/data/repo/linux-4.4/samples/bpf/test_verifier.c:12:23: > fatal error: linux/bpf.h: No such file or directory > #include <linux/bpf.h> > ^ > compilation terminated.
test_verifier.c should be built with gcc. *_kern.c are built with clang. In this case likely 'make headers_install' is missing.
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