Yonghong Song 043a7151d2 tools/bpf: make libbpf _GNU_SOURCE friendly ... [ Upstream commit b42699547f ] During porting libbpf to bcc, I got some warnings like below: ... [ 2%] Building C object src/cc/CMakeFiles/bpf-shared.dir/libbpf/src/libbpf.c.o /home/yhs/work/bcc2/src/cc/libbpf/src/libbpf.c:12:0: warning: "_GNU_SOURCE" redefined [enabled by default] #define _GNU_SOURCE ... [ 3%] Building C object src/cc/CMakeFiles/bpf-shared.dir/libbpf/src/libbpf_errno.c.o /home/yhs/work/bcc2/src/cc/libbpf/src/libbpf_errno.c: In function ‘libbpf_strerror’: /home/yhs/work/bcc2/src/cc/libbpf/src/libbpf_errno.c:45:7: warning: assignment makes integer from pointer without a cast [enabled by default] ret = strerror_r(err, buf, size); ... bcc is built with _GNU_SOURCE defined and this caused the above warning. This patch intends to make libpf _GNU_SOURCE friendly by . define _GNU_SOURCE in libbpf.c unless it is not defined . undefine _GNU_SOURCE as non-gnu version of strerror_r is expected. Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2019-12-13 08:52:15 +01:00
..
api
bpf	tools/bpf: make libbpf _GNU_SOURCE friendly	2019-12-13 08:52:15 +01:00
lockdep
subcmd	libsubcmd: Make _FORTIFY_SOURCE defines dependent on the feature	2019-11-06 13:05:40 +01:00
symbol
traceevent	tools lib traceevent: Do not free tep->cmdlines in add_new_comm() on failure	2019-10-11 18:21:27 +02:00
bitmap.c
find_bit.c
hweight.c
rbtree.c
str_error_r.c
string.c
vsprintf.c