Standalone app for MacOS contains many empty .lproj files in ./Contents/Resources

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Michael Kaiser 2020-6-17

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https://ww2.mathworks.cn/matlabcentral/answers/550185-standalone-app-for-macos-contains-many-empty-lproj-files-in-contents-resources

Hello all,

I've recently re-compiled a stand-alone application for MacOS using R2019b (previously compiled with R2018a). The app ran well, but when I went to copy it to a NAS (through VPN), the process took 20 minutes for a 1.8 MB file! I then zipped the file and noted that there were several thousand files within the .app. The zip file uploaded to the NAS in a couple of seconds, as expected.

Within the .app, I discovered that the ./Contents/Resources directory contained hundreds of directories (mostly empty) such as: aa.lproj, ab.lproj, abr.lproj, etc. This contrasts radically to the R2018a compile in which the ./Contents/Resources directory only contained /Base.lproj (containing 4 .nib files).

What changed? Is there any way to suppress most of the .lproj directories? It's not fun having file copy operations taking a very long time. The NAS treats the .app as several thousand individual files.

Thanks, Mike