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Re: Library order in gcc command

From: Peter O'Gorman
Subject: Re: Library order in gcc command
Date: Mon, 09 Jul 2007 12:40:30 -0500

On Mon, 2007-07-09 at 14:44 +0200, Arvid Brodin wrote:
> I am doing a test installation of GTK+ on top of DirectFB (instead of on 
> X11). (I'm later going to cross compile this for an embedded system.) Now, 
> GTK+ depends on Cairo, and Cairo in turn is compiled with support for either 
> X11 or DirectFB as graphics backend. I'm installing everything to a separate 
> directory (using ./configure --prefix=/home/install_dir), and that is where 
> the DirectFB version of the Cairo libraries end up (in subdir lib/). I'm 
> normally running X11 on this system, so an X11 version of the Cairo library 
> is already installed in /usr/lib64. 
> libtool is used by make to generate commands for building GTK+. libtool finds 
> both versions of the Cairo library, but unfortunately it places the 
> /usr/lib64 one first, and that makes the linker fail with undefined 
> references. (If I run the command by hand, removing the 
> /usr/lib64/ reference, the command works fine, but there are many 
> files to compile/link and I would like a better solution.)
> This is what is printed by make:
> /bin/sh ../libtool --mode=link gcc  -DG_DISABLE_DEPRECATED -g -O2 -Wall   -o 
> gtk-query-immodules-2.0  queryimmodules.o 
> ../gdk-pixbuf/ ../gdk/ 
> gcc -DG_DISABLE_DEPRECATED -g -O2 -Wall -o .libs/gtk-query-immodules-2.0 
> queryimmodules.o  ./.libs/ 
> -L/home/install_dir/usr/local//lib 
> /home/install_dir/source/gtk+-2.10.13/gdk/.libs/ 
> -L/home/install_dir/usr/local/lib 
> /home/install_dir/usr/local/lib/ 
> ../gdk-pixbuf/.libs/ ../gdk/.libs/ 
> /home/install_dir/usr/local//lib/ /usr/lib64/ 
> /usr/lib64/ /usr/lib64/ /usr/lib64/ 
> /usr/lib64/ /usr/lib64/ 
> /home/install_dir/usr/local//lib/ 
> /home/install_dir/usr/local//lib/ 
> /home/install_dir/usr/local//lib/ /usr/lib64/ 
> /usr/lib64/ /usr/lib64/ 
> /home/install_dir/usr/local//lib/ 
> /home/install_dir/usr/local//lib/ 
> /home/install_dir/usr/local//lib/ -lpthread 
> /usr/lib64/ -lz /home/install_di
> r/source/gtk+-2.10.13/gdk-pixbuf/.libs/ 
> /home/install_dir/usr/local//lib/ -ldl 
> /home/install_dir/usr/local//lib/ 
> /home/install_dir/usr/local//lib/ -lm -Wl,--rpath 
> -Wl,/home/install_dir/usr/local/lib -Wl,--rpath 
> -Wl,/home/install_dir/usr/local//lib
> /home/install_dir/source/gtk+-2.10.13/gdk/.libs/ 
> undefined reference to `cairo_directfb_surface_create'
> collect2: ld returned 1 exit status
> I have set LD_LIBRARY_PATH=/home/install_dir/lib - is this where libtool gets 
> the path to the correct library? And most importantly, how do I get libtool 
> to place the correct library before the /usr/lib64/ one so that 
> the link does not fail?

check /home/install_dir/lib/*.la files for references to /usr/lib64 in

You may have to edit or remove them. Libtool is not great at building in
a root like this.


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