Dynamic libraries, gtk-sharp

[Bob]

OK, I guess that I can get this to work, as long as I make it inside of
MacPorts and set

export DYLD_FALLBACK_LIBRARY_PATH=/opt/local/lib

I'll start another thread soon with some working port files for gtk-sharp2.

Bob

ps If anyone know what I need to set to get it to work in my home directory
I would still like to know.

On 9/15/07, bob spamnot <bob.spamnot at gmail.com> wrote:
>
> I am trying to build gtk-sharp-2.0 from source since there is no working
> port of this (and there isn't on Fink either at the moment).  If I can get
> this to work I can make a portfile for it, so I guess it does relate to
> Macports:-).  But I cannot get the dynamic library situation sorted.  In
> fact I am quite mystified by the apple DYLN_LIBRARY_PATH variable.  Any help
> or pointers will be greatly appreciated.  Sorry about the long post, I've
> tried to condense it down.  Here is the steps I have done (note I am on a
> PowerBook G4, OS X 10.4.10, XCode 2.4.1):
>
> 1a. Install gnome: sudo port install gnome
>
> Actually I haven't (yet) got it to fully install but it makes it most of
> the way (certainly far enough for the bits needed by gtk-sharp-2.0 ).
>
> 1b. Install mono: sudo port install mono
>
> 2. Download gtk-sharp from gnome snv to a local src directory.  I've
> tried both the HEAD version and tagged version 2.10.2.
>
> 3. Make it in  the following way:
>
> bash> echo $PATH
>
> usr/local/bin:/opt/local/bin:/opt/local/sbin:/usr/X11R6/bin:/bin:/sbin:/usr/bin:/usr/sbin
> bash> ./configure --prefix=/Users/name/local-sharp
> bash> make
> bash> make install
>
> This all works, so now gtk-sharp is install in local-sharp in my home
> directory.
>
> 4. Now I try to compile a simple program:
>
> bash> which mcs
> mcs is hashed (/opt/local/bin/mcs)
>
> bash> export
> PKG_CONFIG_PATH=/opt/local/lib/pkgconfig:/usr/X11R6/lib/pkgconfig:/Users/name/local-sharp/lib/pkgconfig
>
>
> bash> mcs -pkg:gtk-sharp-2.0 HelloWorldGtk.cs
>
> bash> mono HelloWorldGtk.exe
>
> ** (HelloWorldGtk.exe:10680): WARNING **: The following assembly
> referenced from /Users/name/src/gtk-sharp-cvs/test/HelloWorldGtk.exe could
> not be loaded:
>      Assembly:   gtk-sharp    (assemblyref_index=1)
>      Version:    2.10.0.0
>      Public Key: 35e10195dab3c99f
> System error: Unknown error: 0
>
>
> ** (HelloWorldGtk.exe:10680): WARNING **: Could not load file or assembly
> 'gtk-sharp, Version= 2.10.0.0, Culture=neutral,
> PublicKeyToken=35e10195dab3c99f' or one of its dependencies.
>
> Unhandled Exception: System.IO.FileNotFoundException: Could not load file
> or assembly 'gtk-sharp, Version= 2.10.0.0, Culture=neutral,
> PublicKeyToken=35e10195dab3c99f' or one of its dependencies.
> File name: "gtk-sharp, Version=2.10.0.0, Culture=neutral,
> PublicKeyToken=35e10195dab3c99f"
>
> OK, I guess I need to set DYLD_LIBRARY_PATH
> bash> export DYLD_LIBRARY_PATH=/opt/local/lib:/Users/name/local-sharp/lib
> (note leaving out /opt/local/lib doesn't work either)
>
> bash> mono HelloWorldGtk.exe
> dyld: Symbol not found: __cg_jpeg_resync_to_restart
>   Referenced from:
> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/ImageIO
>   Expected in: /opt/local/lib/libJPEG.dylib
>
> Trace/BPT trap
>
> Here is where I'm stuck.  I've tried lots of variations but they all
> either give me this error or they cannot find gtk-sharp-2.0 or the regular
> gtk libs (which  are in /opt/local/lib).  I'll spare you the details of the
> other variations except one.  If I set DYLD_LIBRARY_PATH=/opt/local/lib and
> just try to use eog or mcs I get this same error (note they both work fine
> if DYLN is not set).  E.G.:
>
> bash> export DYLD_LIBRARY_PATH=/opt/local/lib
> bash> eog
> dyld: Symbol not found: __cg_jpeg_resync_to_restart
>   Referenced from:
> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/ImageIO
>
>   Expected in: /opt/local/lib/libjpeg.62.dylib
>
> Trace/BPT trap
> bash> mcs HelloWorld.cs    (very simple helloworld which just writes to
> console and works if DYLN not set)
> dyld: Symbol not found: __cg_jpeg_resync_to_restart
>   Referenced from:
> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/ImageIO
>   Expected in: /opt/local/lib/libJPEG.dylib
>
> Trace/BPT trap
>
> This seems completely bizarre to me.  Both eog and mcs were made by
> Macports and linked against stuff in /opt/local/lib, so why should adding
> /opt/local/lib to DYLD_LIBRARY_PATH make libJPEG look into the framework
> listed above.  Maybe someone could explain to me what DYLN_LIBRARY_PATH is
> doing (the man page doesn't really help)?
>
> I've try searching google on the above "Symbol not found" error and get
> lots of hits (so I'm not alone) but none of the suggestions seem to help.
> I'd be glad to show some of the other things I've tried but this post is
> long enough and I'm hoping someone will have an easy answer:-)  I hope I was
> clear enough, feel free to ask for clarification.
>
> Thanks,
> Bob
>
>
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