cmake HAVE_BPF_STATS_TYPE examples

nghttp2/nghttp2 CMakeLists.txt :264

check_c_source_compiles("
#include <linux/bpf.h>
int main() { enum bpf_stats_type foo; (void)foo; }" HAVE_BPF_STATS_TYPE)

fluent/fluent-bit lib/nghttp2-1.65.0/CMakeLists.txt :277

check_c_source_compiles("
#include <linux/bpf.h>
int main() { enum bpf_stats_type foo; (void)foo; }" HAVE_BPF_STATS_TYPE)