$ cc -fno-common -DPERL_DARWIN -mmacosx-version-min=14.4 -DNO_POSIX_2008_LOCALE -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include   -fno-common -DPERL_DARWIN -mmacosx-version-min=14.4 -DNO_POSIX_2008_LOCALE -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include  -mmacosx-version-min=14.4 -fstack-protector-strong -L/usr/local/lib -o hello hello.c

$ ./hello