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. make[2]: *** [samples/bpf/test_verifier.o] Error 1
