--as-needed and undefined non-weak symbols

[Rex Dieter]

Ville Skyttä wrote:

> I'm wondering if I've stumbled upon a bug in ld's --as-needed or
> something I was not aware of, here's an example, foo.c:
> 
> extern void gtk_main();
> int main() {
>     gtk_main();
> }
> 
> Now, libgtk (as of FC5) contains lots of undefined gdk_* symbols, so

Yeah, bad.  Fixed that for gtk+ in Extras/fc6. (:

> trying "gcc -lgtk foo.c" on the above fails as expected, and "gcc -lgdk
> -lgtk foo.c" succeeds, again as expected.  However, to my surprise, "gcc
> -Wl,--as-needed -lgdk -lgtk foo.c" fails:

Try
gcc -Wl,--as-needed  foo.c -lgtk -lgdk
or even better:
gcc -Wl,--as-needed  foo.c `pkg-config --libs gtk+`
instead.  

-- Rex