From 123fd551a4e12160e843bd6cf633bc8f397e5d45 Mon Sep 17 00:00:00 2001
From: Maxim Cournoyer <maxim@guixotic.coop>
Date: Mon, 21 Jul 2025 14:40:22 +0900
Subject: [PATCH] contrib: fix gmp build with GCC 15

GCC 15 defaults to -std=gnu23, which breaks the configure checks (see:
<https://gmplib.org/list-archives/gmp-bugs/2024-November/005550.html>).

Change-Id: I9cffd29cd74319f55dadb121b362a2460a4730e5
---
 contrib/src/gmp/rules.mak | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contrib/src/gmp/rules.mak b/contrib/src/gmp/rules.mak
index 80f2d8777..970e201d5 100644
--- a/contrib/src/gmp/rules.mak
+++ b/contrib/src/gmp/rules.mak
@@ -33,7 +33,7 @@ ifdef HAVE_MACOSX
 	$(RECONF)
 	cd $< && $(HOSTVARS) ./configure --without-clock-gettime --enable-static --disable-shared $(HOSTCONF)
 else
-	cd $< && $(HOSTVARS) ./configure $(HOSTCONF)
+	cd $< && $(HOSTVARS) CFLAGS="$(CFLAGS) -std=gnu17" ./configure $(HOSTCONF)
 endif
 endif
 	cd $< && $(MAKE) install