Turn off outputIsMappableFile when building to osx-arm64 #118
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This was referenced Feb 25, 2022
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Is this patch still needed with https://github.com/tpoechtrager/cctools-port/tree/986-ld64-711? |
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This fixes #117.
Further investigation shows that with the newest version of cctools-port + sigtool for signing then whenever the
outputIsMappableFile=truewhich triggerswholeBuffer = (uint8_t *)mmap(NULL, _fileSize, PROT_WRITE|PROT_READ, MAP_SHARED, fd, 0);then the output binary will not work on M1 macs. This can be triggered when either (a) the file already exists, or (b) the path is explicitly specified (relative or absolute). I'm not sure why themmapoption is necessary, and everything appears to run fine turning it off (and it is off in regular usage when you target a new file without a path specified!).