octavious@phantasm testing % gcc -Wall -g -o testing `pkg-config --cflags gtk+-2.0` `pkg-config --libs gtk+-2.0` /usr/lib/gcc/i686-pc-linux-gnu/3.4.6/../../../crt1.o: In function `_start': init.c:(.text+0x18): undefined reference to `main' collect2: ld returned 1 exit status