cmake HAVE_DECL_INITGROUPS examples

nghttp2/nghttp2 CMakeLists.txt :389 

check_symbol_exists(initgroups grp.h HAVE_DECL_INITGROUPS)

fluent/fluent-bit lib/nghttp2-1.65.0/CMakeLists.txt :373 

check_symbol_exists(initgroups grp.h HAVE_DECL_INITGROUPS)