> gcc BLOWFISH.C > I get this result: > [charles@linux1 Blowfish]$ gcc BLOWFISH.C > /usr/lib/gcc/i386-redhat-linux/4.0.0/../../../crt1.o(.text+0x18): In > function `_start': > : undefined reference to `main' > /tmp/ccsc34vS.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0' Charles is blowfish a program or a "library" (i mean is there a function called: int main (...) or void main(...))? If there is no, then you should only compile it. Then in your main program, you should include blowfish.h, and compile the program: gcc main.c blowfish.o blowfish.o is the output of blowfish.c, when you compile and do not link. Arturas Moskvinas
