I just installed GGI but a little test program initializing a visual doesn't seem to link properly...

I initially downloaded a tarred GGI and GII, but when they wouldn't properly build I got impatient and installed the GGI and GII rpms instead.

Then I recursively copied all of the header files, and their directories, that came with the tarball into /usr/include/ggi
I don't know if what I did was right, so maybe that's where the problem is... in any case, here's the code and the output it produced..

..
..
..
#include <ggi/ggi.h>

int main()
{
ggi_visual_t vis;

if( ggiInit() < 0 ) {
printf("Couldn't initialize GGI...\n");
exit(1);

if( ! (vis=ggiOpen(NULL))) {
printf("Couldn't open a visual...\n");
} else {
printf("Got a default visual!\n");
ggiClose(vis);
}

ggiExit();
return 0;
}
}
..
..
..
#gcc visual.c
/tmp/ccffyg3n.o: In function 'main':
/tmp/ccffyg3n.o:(.test+0xa): undefined reference to 'ggiInit'
collect2: ld returned 1 exit status
..
..
..
#gcc visual.c -c
this compiles perfectly..
..
..
..


Can anyone please help me with this?
If more information is needed, just let me know..
Thanks