Cool stuff! GCC works - I thought it was broken, but it just takes a long time.
[root@localhost tmp]# time gcc hello.c -o hello
real 0m 24.43s
user 0m 2.63s
sys 0m 2.17s
[root@localhost tmp]# ./hello
Hello, World!
[root@localhost tmp]# time gcc hello.c -o hello
real 0m 24.43s
user 0m 2.63s
sys 0m 2.17s
[root@localhost tmp]# ./hello
Hello, World!