bug#47720: bsnes build might be not reproducible

["Nicolò Balzarotti" <anothersms@gmail.com>]

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Hi guix,

I get an 'Illegal instruction' error when running bsnes (on my X200).

$ guix environment --ad-hoc bsnes
$ bsnes
Illegal instruction

The makefile contains this:
https://github.com/bsnes-emu/bsnes/blob/4ea984b6886ecb61afc26c177eeced77e8582a44/bsnes/GNUmakefile#L17
(march=native when local)

I tried to patch it, but I don't know how to check if this is fixed.

I attach the patch here, on my laptop applied over 073b12d70d I get

guix hash -r /gnu/store/h2k0la0cyilfj7y7vm9r2zs1vi3wkiwy-bsnes-115
0298ajc60qpjhllyqv8gdb503bzg0rcd7pvigq22h7gm58d0g0sd

Thanks!


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From 2707ecb0c39cd731344cb1f68d17662b7272b415 Mon Sep 17 00:00:00 2001
From: nixo <nicolo@nixo.xyz>
Date: Mon, 12 Apr 2021 09:42:13 +0200
Subject: [PATCH] gnu: bsnes: Disable march=native

---
 gnu/packages/emulators.scm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gnu/packages/emulators.scm b/gnu/packages/emulators.scm
index 8482f679e2..09d6095a7d 100644
--- a/gnu/packages/emulators.scm
+++ b/gnu/packages/emulators.scm
@@ -1955,6 +1955,8 @@ from various forks of Gens, and improved platform portability.")
     (build-system gnu-build-system)
     (arguments
      `(#:make-flags (list "-C" "bsnes"
+                          ;; Remove march=native
+                          "local=false"
                           (string-append "prefix=" (assoc-ref %outputs "out")))
        #:tests? #f                      ; No tests.
        #:phases (modify-phases %standard-phases
-- 
2.31.1