This one was only defined if _GNU_SOURCE was set in older glibc
versions, check that and provide the define in such cases.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ilsgsysr6s3mru7rf2befnu5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
#define SCA_FD syscall_arg__scnprintf_fd
+#ifndef AT_FDCWD
+#define AT_FDCWD -100
+#endif
+
static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size,
struct syscall_arg *arg)
{