$ rpm -q libgnomeui-devel
libgnomeui-devel-2.12.0-4
$ cat test.c

int main ()
{
        return 0;
}
$ gcc -o test test.c `pkg-config --libs libgnomeui-2.0`
/usr/bin/ld: cannot find -lSM
collect2: ld returned 1 exit status

A requires for libSM-devel needs to be added.