Commits on Aug 28, 2024

1. Fix 10.5 SDK PowerPC64 libgcc_s.10.5.dylib link errors. …

   Fixes linking issues for PowerPC64 binaries caused by overwriting the
   libgcc_s.10.5.dylib in the 10.5 SDK with the equivalent library from
   the 10.6 SDK--which does not contain a PowerPC64 binary--by copying
   the PowerPC64 binary from the former into the latter with lipo.
   
   Linking a PowerPC64 binary without this patch results in the following:
   ```
   $ powerpc-apple-darwin10-gcc-4.2.1 -m64 -isysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5 test.c
   ld: warning: in /Developer/SDKs/MacOSX10.5.sdk/usr/lib/libgcc_s.10.5.dylib, missing required architecture ppc64 in file
   $ otool-classic -L a.out
   a.out:
   	/usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.3)
   	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 111.1.4)
   ```
   
   With this patch, instead:
   ```
   $ powerpc-apple-darwin10-gcc-4.2.1 -m64 -isysroot /Developer/SDKs/MacOSX10.5.sdk/ -mmacosx-version-min=10.5 test.c
   $ otool-classic -L a.out
   a.out:
   	/usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.3)
   	/usr/lib/libgcc_s_ppc64.1.dylib (compatibility version 1.0.0, current version 1.0.0)
   	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 111.1.4)
   ```

   

   AliceLR committed Aug 28, 2024
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