From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>
Subject: bug#19733: disfunctional gcc binary when GCJ or gfortran is installed
Date: Tue, 13 Oct 2015 11:44:03 +0200
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To: 19733@debbugs.gnu.org

Commit 5f6887e8 fixes this for GCJ, but we still have this problem for
all variants of gfortran, gcc-objc, and gccgo, all of which are built
using the ‘custom-gcc’ procedure.

It’s probably safe to add a build phase like this to ‘custom-gcc’:

    (add-after 'install 'remove-broken-or-conflicting-files
     (lambda* (#:key outputs #:allow-other-keys)
       (for-each delete-file
         (find-files (string-append (assoc-ref outputs "out") "/bin")
                     ".*(c\\+\\+|cpp|g\\+\\+|gcc.*)"))
       #t))

~~ Ricardo