cmake HAVE_GCC_THREAD_LOCAL_STORAGE examples

shadowsocks/shadowsocks-libev cmake/configure.cmake :128 

check_c_source_compiles("
        __thread int tls;
        int main(void) { return 0; }"
        HAVE_GCC_THREAD_LOCAL_STORAGE)

SmartThingsCommunity/st-device-sdk-c test/framework/cmocka/ConfigureChecks.cmake :108 

check_c_source_compiles("
__thread int tls;

int main(void) {
    return 0;
}" HAVE_GCC_THREAD_LOCAL_STORAGE)

clibs/cmocka ConfigureChecks.cmake :111 

check_c_source_compiles("
__thread int tls;

int main(void) {
    return 0;
}" HAVE_GCC_THREAD_LOCAL_STORAGE)

FujiNetWIFI/fujinet-firmware components_pc/libssh/ConfigureChecks.cmake :305 

check_c_source_compiles("
__thread int tls;

int main(void) {
    return 0;
}" HAVE_GCC_THREAD_LOCAL_STORAGE)