Unfortunately XULRunner is not well supported, but I was able to get around most of the errors and get it working, except for one issue which I will get to later.
Basically, all the instructions I can find for how to structure the bundle are outdated. Mozilla had to restructure the binaries due to changes in the Mac code signing layout requirements. From this bug report and some trial and error I was able to determine the layout requirements.
The first error we can see when running the Contents/MacOS/xulrunner binary from the command line.
Error 1:
dyld: Library not loaded: @executable_path/libmozglue.dylib
The entirety of the XUL.framework contents must be placed into the App's Contents/MacOS/ directory. So to fix this error, copy everything from XUL.framework/Versions/Current into your app's MacOS directory.
Ok, now the binary will run. However, that brings us to the next error which can also be seen from the command line.
Error 2:
Couldn't load XPCOM.
This error is anything but descriptive, but to solve it you simple need to copy the dependentlibs.list file (now in your MacOS directory) to your Contents/Resources/ directory.
Error 3:
Now when you run by the command line, you will get something like the following.
Mozilla XULRunner 36.0.4
Usage: xulrunner [OPTIONS]
xulrunner APP-FILE [APP-OPTIONS...]
OPTIONS
--app specify APP-FILE (optional)
-h, --help show this message
-v, --version show version
--gre-version print the GRE version string on stdout
APP-FILE
Application initialization file.
APP-OPTIONS
Application specific options.
Unfortunately, xulrunner is not automatically finding the application.ini file in Contents/Resources. For testing, we can force it through the command line. Something like the following will do the trick:
./MyApp.app/Contents/MacOS/xulrunner MyApp.app/Contents/Resources/application.ini
At the moment, the only possible solution to this last issue I can offer at the moment is to make a stud loaded, either a shell script or compiled binary that executes the necessary command to run application.ini in xulrunner.
