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Date: Sat, 20 Dec 2008 16:43:09 +0100
From: Reini Urban <rurban AT x-ray DOT at>
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Subject: Re: GTK+ externals are unresolved
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Yaakov (Cygwin/X) schrieb:
> René Berber wrote:
>> You're wrong, libraries shared or static are dealt the same way by the
>> compiler which looks for its list of unresolved symbols and doesn't
>> re-scan libraries when another symbol appears.
> 
> Since I apparently didn't make myself clear the last two times, let me
> say it again.  If libfoo is a shared library, and libbar is another
> shared library that depends on libfoo (and on Cygwin is, by definition,
> already linked against it), it does NOT matter if you do this:
> 
> gcc -o baz.exe baz.o -lbar -lfoo
> 
> or this:
> 
> gcc -o baz.exe baz.o -lfoo -lbar
> 
> Now if we link with -static, then of course it needs to be before -lfoo,
> just like baz.o which depends on libbar needs to be before -lbar.
> 
> But that's not the case here; all the GNOME libraries are shared, and
> pkg-config's order is ultimately correct.
> 
> Bottom line: this linking order discussion is a red herring.  My
> suspicion is that there is a mixing of the versions provided by the
> distro and Ports.

Anyway, it compiles with my fixed order and gives the unresolved symbols 
with the original $(pkg-config --libs gtk+-2.0) order of libs.
Please try it our yourself.
-- 
Reini Urban


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Subject: Re: GTK+ externals are unresolved
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M.O.D. schrieb:
> John Emmas <johne53 <at> tiscali.co.uk> writes:
> 
>> Perhaps you're missing the file 'libgtk-x11-2.0.la'
> I included a directory listing in my message, showing that this file is there.
> 
> Perhaps you and John Emmas should read the messages before you reply to them.

The order of libs is wrong for $(pkg-config --libs gtk+-2.0)

-lgtk-x11-2.0 -lgdk-x11-2.0 should be at the end.

$ pkg-config --libs gtk+-2.0
-L/usr/X11R6/lib -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgdk_pixbuf-2.0 
-lpangoxft-1.0 -lXft -lfreetype -lz -lXrender -lXext -lfontconfig 
-lpangox-1.0 -lX11 -lpango-1.0 -lm -lgobject-2.0 -lgmodule-2.0 
-lglib-2.0 -lintl -liconv

=>

-L/usr/X11R6/lib -latk-1.0 -lgdk_pixbuf-2.0 -lpangoxft-1.0 -lXft 
-lfreetype -lXrender -lXext -lfontconfig -lpangox-1.0 -lpango-1.0 
-lgobject-2.0 -lgmodule-2.0 -lglib-2.0 -lgdk-x11-2.0 -lgtk-x11-2.0 
-lX11 -lz -lintl -liconv

With that linker line it works okay.
But I don't know how pkgconfig should be patched to resolve the required 
pkg's recursively into the other direction.

Windows need the libs in the correct order, i.e. backwards.
-- 
Reini Urban
http://phpwiki.org/  http://murbreak.at/

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