Found an unexpected Mach-O header code: 0x752f2123

So, the application builds fine, but on run (cmd-R) I get this error. Some googling indicates that this precise header code has no hits and that solutions seem to vary from one code to the next.


Any help appreciated.

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It looks like someone is treating a shell script as a Mach-O executable. 0x752f2123 is ASCII for “u/!#" or, byte reversed, “#!/u”, that is, the sort of thing you’d expect to find at the start of a shell script.

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eskimo
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It looks like someone is treating a shell script as a Mach-O executable. 0x752f2123 is ASCII for “u/!#" or, byte reversed, “#!/u”, that is, the sort of thing you’d expect to find at the start of a shell script.

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware 

let myEmail = "eskimo" + "1" + "@apple.com"
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eskimo
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Thanks, for the lead, will check it out.

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coyot linden
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Ah, ha! Great tip, Eskimo.


As of this build, we introuced a python wrapper that launches our executable. It is no doubt that this script is what Xcode is complaining about with the shebang starting line.


Given this, I will need to find a way to tell Xcode how to launch the real executable.

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