Re: Installer pkg built with Xcode 12.2 won't open in macOS 10.10 and 10.11

Jon Gotow

On Dec 8, 2020, at 7:51 AM, Mark Allan <> wrote:

I'm beginning to think there's something wrong with the 'codesign' tool on macOS 11. One of my other build scripts for the same app iterates through a directory of additional binaries and libraries to codesign them prior to being archived. (find .... exec /usr/bin/codesign ... )
Yes, that was my point in my (overly long) reply earlier. The _only_ thing different about the two builds was in codesign. The apps were exactly the same otherwise. The failing copy of my app was signed with macOS 11.1's codesign on Apple Silicon, while the successful one was signed on an Intel machine running 11.1. So codesign has changed.

The codesign tool reports no error whilst signing, but the resulting archive fails notarisation because of a number of unsigned embedded files. Sometimes they all get signed correctly, sometimes one or more files are missed and don't end up getting signed.
In Quinn's unofficial post on the do's and don'ts of code signing, he says not to use the --deep argument, but instead create a script that signs all necessary executables from the inside out (see Are you signing individual embedded files of your .pkg as necessary, or relying on --deep to do it for you?

- Jon

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