[walrus@localhost Documents]$ gcc tictactoe.c `pkg-config --cflags --libs gtk+-2.0`
In file included from tictactoe.c:22:
tictactoe.h:60:29: warning: no newline at end of file
tictactoe.c:156:2: warning: no newline at end of file
/usr/lib/gcc/i586-mandriva-linux-gnu/4.1.1/../../../crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
collect2: ld returned 1 exit status