[Bug binutils/23728] nm fails on OS X 10.14 (Mojave)

[fxcoudert at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=23728

--- Comment #4 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
I've found the root of the issue. binutils does not handle load command 0x32
LC_BUILD_VERSION (nor 0x31 LC_NOTE, actually). They are defined in recent LLVM
versions: see
https://github.com/llvm-mirror/llvm/blob/master/include/llvm/BinaryFormat/MachO.def#L77

Looking at the output of objdump -private-headers there is one clear
difference:

@@ -56,16 +56,18 @@ attributes NO_TOC STRIP_STATIC_SYMS LIVE
  reserved1 0
  reserved2 0
 Load command 1
-      cmd LC_VERSION_MIN_MACOSX
-  cmdsize 16
-  version 10.13
-      sdk n/a
+       cmd LC_BUILD_VERSION
+   cmdsize 24
+  platform macos
+       sdk n/a
+     minos 10.14
+    ntools 0
 Load command 2
      cmd LC_SYMTAB
  cmdsize 24


LC_VERSION_MIN_MACOSX is implemented in binutils, while LC_BUILD_VERSION is
not. It is apparently new in Mojave.

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