cmake HAVE_GMTIME_S examples

libarchive/libarchive CMakeLists.txt :1563 

CHECK_SYMBOL_EXISTS(gmtime_s "time.h" HAVE_GMTIME_S)

libjxl/libjxl third_party/lcms2.cmake :70 

check_symbol_exists(gmtime_s "time.h" HAVE_GMTIME_S)

libjxl/libjxl third_party/lcms2.cmake :72 

target_compile_definitions(lcms2
      PUBLIC "-DHAVE_GMTIME_S=1")