From 178c3115c47905f4ddad2740ada2725db42ed478 Mon Sep 17 00:00:00 2001
From: Janneke Nieuwenhuizen <janneke@gnu.org>
Date: Mon, 25 Nov 2024 19:45:50 +0100
Subject: gnu: m4: Fix build of tests on the 64bit Hurd.

* gnu/packages/m4.scm (m4)[arguments]: When building on the 64bit Hurd,
add CFLAGS to #:configure-flags.

Change-Id: Iab16194f4cd2911b4610dddd855064ddc4958dd9
---
 gnu/packages/m4.scm | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'gnu/packages/m4.scm')

diff --git a/gnu/packages/m4.scm b/gnu/packages/m4.scm
index 081304db34..800b11cca2 100644
--- a/gnu/packages/m4.scm
+++ b/gnu/packages/m4.scm
@@ -43,6 +43,12 @@
     `(;; Explicitly disable tests when cross-compiling, otherwise 'make check'
       ;; proceeds and fails, unsurprisingly.
       #:tests? ,(not (%current-target-system))
+      ,@(if (system-hurd64?)
+            (list #:configure-flags
+                  `'(,(string-append
+                       "CFLAGS=-g -O2"
+                       " -Wno-implicit-function-declaration")))
+            '())
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'disable-test
-- 
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