bug#41669: Cross-compiled powerpc64-linux bootstrap-tarballs not reproducible

[Leo Le Bouter via Bug reports for GNU Guix <bug-guix@gnu.org>]

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Hello!

I want to have one last attempt at making the binaries reproducible.

Could anyone help adjusting this patch so the package definition's hash
does not change on other architectures? So it can be proposed for merge
in master..

Thank you

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From e6931a7ebb9cc0681a3211ac38a1c58c7a176481 Mon Sep 17 00:00:00 2001
From: John Doe <dftxbs3e@free.fr>
Date: Mon, 28 Dec 2020 03:21:08 +0100
Subject: [PATCH] gnu: gcc-4.7: Disable parallel compilation on powerpc64*.

* gnu/packages/gcc.scm (gcc-4.7)[arguments]: Conditionally disable
  parallel compilation on powerpc64*.
---
 gnu/packages/gcc.scm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm
index 4d5aaa7070..6d32677144 100644
--- a/gnu/packages/gcc.scm
+++ b/gnu/packages/gcc.scm
@@ -204,6 +204,8 @@ where the OS part is overloaded to denote a specific ABI---into GCC
                                     ,(if stripped? "-g0" "-g")))))
 
           #:tests? #f
+          #:parallel-build? ,(string-prefix? "powerpc64" (or (%current-target-system)
+                                                              (%current-system)))
 
           #:phases
           (modify-phases %standard-phases
-- 
2.29.2


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