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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: gprbuild fun
Date: Sun, 28 Jun 2015 18:28:13 +0100
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Date: 2015-06-28T18:28:13+01:00
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I have a mixed-language GPR like

   project build is
      for languages use ("ada", "c");
      for source_files use ("a.adb", "c.c");
      package ide is
         for compiler_command ("ada") use "gnatmake";
      end ide;
   end build;

(I have no idea why I introduced the compiler_command setting on
2014-05-01, and I have no idea why the issue has only just surfaced)

and, if I have the native gcc and arm-eabi-gcc present in the PATH,
gprbuild chooses to use the native gcc for the Ada part and arm-eabi-gcc
for the C part!

Fix: delete the compiler_command line.

_That_ was fun.