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From: Felix Krause <flyx@isobeef.org>
Newsgroups: comp.lang.ada
Subject: Re: GCC 4.8.1 for Mac OS X
Date: Mon, 8 Jul 2013 22:06:26 +0200
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Date: 2013-07-08T22:06:26+02:00
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On 2013-07-07 18:37:02 +0000, Simon Wright said:

> You can find this at
> https://sourceforge.net/projects/gnuada/files/GNAT_GCC%20Mac%20OS%20X/4.8.1/
> 
> The README says:
> 
> This is GCC 4.8.1 built for Mac OS X Mountain Lion (10.8.4, Darwin 12.4.0).
> 
> [snip]

Great!

However, when I try to build any GPRBuild project with the included 
gprbuild, it doesn't recognize the compiler. This is from gprconfig's 
verbose output:

  Foreach compiler in /opt/gcc-4.8.1/bin regexp=TRUE extra_dir=FALSE

    [...]

    GCC is candidate: filename=gcc
      target: executing "gcc -dumpmachine" output=<use -v -v> no match
      target: grep matched="x86_64-apple-darwin12"
      version: executing "gcc -v" output=<use -v -v> no match
      version: grep no match
      Ignore compiler, since couldn't guess its version

    [...]

    GNAT is candidate: filename=gnatmake
      target: executing "gcc -dumpmachine" output=<use -v -v> no match
      target: grep matched="x86_64-apple-darwin12"
      version: executing "gnatls -v" output=<use -v -v> no match
      version: grep matched="4.8"
      variables: executing "gcc -v" output=<use -v -v> no match
      variables: grep no match
      Ignore compiler since variable 'gcc_version' is empty

Interestingly, gcc -v outputs german text, which may be the reason for 
the failure:

    Es werden eingebaute Spezifikationen verwendet.
    COLLECT_GCC=gcc
    
COLLECT_LTO_WRAPPER=/opt/gcc-4.8.1/libexec/gcc/x86_64-apple-darwin12/4.8.1/lto-wrapper 

    Ziel: x86_64-apple-darwin12
    Konfiguriert mit: ../gcc-4.8.1/configure --prefix=/opt/gcc-4.8.1 
--disable-multilib --enable-languages=c,c++,ada,fortran,objc,obj-c++ 
--target=x86_64-apple-darwin12 --build=x86_64-apple-darwin12
    Thread-Modell: posix
    gcc-Version 4.8.1 (GCC)

I believe the last line is the problem; Apple's llvm-gcc gives:

    gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)

so if gprconfig searches for "gcc version", it will fail. I don't have 
a clue why gcc gives german output; I am german, but my system language 
is english, and other binaries usually give english output. Does anyone 
know how I can fix this?

-- 
Felix Krause
http://flyx.org/