For OS X, I distribute my Java application inside a DMG. Since Mountain Lion's release, opening the app gives the following error message:
[app name] is damaged and couldn't be opened. You should eject the disk image.
Apparently the fix is to sign the .app file so I read the Code Signing Guide. Everything seems to be straightforward apart from the important question of how to integrate this into my one-click build process.
Building my product on all platforms happens on my Linux development machine. I run an Ant script and the Windows installer, starter EXE, Linux installer, OS X application and DMG are all built. So I'd like to integrate code signing into this process.
Is there an equivalent of 'codesign' for Linux?