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How I Created This Repo

I built gimp-resynthesizer via MacPorts. Then, copied the resulting *.py, resynthesizer, and resynthesizer_gui from /opt/local/lib/gimp/2.0/plug-ins/ to /Applications/GIMP.app/Contents/Resources/lib/gimp/2.0/plug-ins. Done!

However, I didn't want to force people to install MacPorts and build gimp-resynthesizer. I had some decent difficulties doing that (details in the section below) and I feel like the process may not be very repeatable. Ideally, I wanted something that was "drag and drop". Unfortunately, just copying over the *.py, resynthesizer, and resynthesizer_gui files results in:

user@Mac /Applications/GIMP.app/Contents/Resources/lib/gimp/2.0/plug-ins $ ./resynthesizer
dyld[8592]: Library not loaded: /opt/local/lib/libgimpui-2.0.0.dylib
  Referenced from: <B97A09A8-B52F-3238-8754-CAEB415B80FF> /Applications/GIMP.app/Contents/Resources/lib/gimp/2.0/plug-ins/resynthesizer
  Reason: tried: '/opt/local/lib/libgimpui-2.0.0.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/opt/local/lib/libgimpui-2.0.0.dylib' (no such file), '/opt/local/lib/libgimpui-2.0.0.dylib' (no such file)

So, we have some missing libraries (libgimpui-2.0.0.dylib above + many more). I figured I would just include all the libraries that resynthesizer uses. MacPorts builds its libraries to /opt/local/lib (Confirm via port contents gimp-resynthesizer) and I can copy them from there. However, there were a lot of missing libraries and those libraries have missing libraries as well. Plus, since I want to put the libraries in a folder other than /opt/local/lib, I need to change the path of all the library references... It was a bit of a rabbit hole, but I think I made it work.

It was a cycle of trying to run the resynthesizer via command line (./Applications/GIMP.app/Contents/Resources/lib/gimp/2.0/plug-ins/resynthesizer) then copying over the missing library from /opt/local/lib, then fixing the library's path. I was effectively making a bunch of "find and replace" changes from /opt/local/lib to @executable_path/resynthesizerLibraries/, where @executable_path is something along the lines of /Applications/GIMP.app/Contents/Resources/lib/gimp/2.0/plug-ins.

Some helpful commands were:

$ # Confirm this is an ARM executable
$ file resynthesizer
resynthesizer: Mach-O 64-bit executable arm64
$
$ # Show where this executable expects libraries to be
$ otool -L resynthesizer
resynthesizer:
	/opt/local/lib/libgimpui-2.0.0.dylib (compatibility version 1001.0.0, current version 1001.38.0)
	/opt/local/lib/libgimpwidgets-2.0.0.dylib (compatibility version 1001.0.0, current version 1001.38.0)
	/opt/local/lib/libgimpmodule-2.0.0.dylib (compatibility version 1001.0.0, current version 1001.38.0)
    [...]
$
$ # Add a directory to the runtime library search path
$ install_name_tool -add_rpath @executable_path/../../../../ resynthesizer
$
$ # Change the library's path
$ install_name_tool -change /opt/local/lib/libgimpui-2.0.0.dylib @rpath/lib/libgimpui-2.0.0.dylib resynthesizer
$
$ # Confirm the library's path was changed
$ otool -L resynthesizer
resynthesizer:
	@rpath/lib/libgimpui-2.0.0.dylib (compatibility version 1001.0.0, current version 1001.38.0)
	/opt/local/lib/libgimpwidgets-2.0.0.dylib (compatibility version 1001.0.0, current version 1001.38.0)
	/opt/local/lib/libgimpmodule-2.0.0.dylib (compatibility version 1001.0.0, current version 1001.38.0)
    [...]

I did this many of times until all the libraries were happy, which made the resynthesizer executable happy:

user@Mac /Applications/GIMP.app/Contents/Resources/lib/gimp/2.0/plug-ins $ ./resynthesizer
./resynthesizer is a GIMP plug-in and must be run by GIMP to be used

Yay! No more library complaints.