gmp: Fix build with GCC15/C23

(From OE-Core rev: 5114bea0e9fe3cc15cb4f4d264a932d5b9897296)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Martin Jansa <martin.jansa@gmail.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-support/gmp/gmp/0001-Complete-function-prototype-in-acinclude.m4-for-C23-.patch

@@ -0,0 +1,25 @@
+From 51a657c827422d2bc284d752dfbcfd2b1311a5bf Mon Sep 17 00:00:00 2001
+From: Marc Glisse <marc.glisse@inria.fr>
+Date: Wed, 29 Jan 2025 22:38:02 +0100
+Subject: [PATCH] Complete function prototype in acinclude.m4 for C23
+ compatibility
+
+Upstream-Status: Backport [https://gmplib.org/repo/gmp/rev/8e7bb4ae7a18]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ acinclude.m4 | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/acinclude.m4 b/acinclude.m4
+index 9cf9483..787511f 100644
+--- a/acinclude.m4
++++ b/acinclude.m4
+@@ -609,7 +609,7 @@ GMP_PROG_CC_WORKS_PART([$1], [long long reliability test 1],
+ 
+ #if defined (__GNUC__) && ! defined (__cplusplus)
+ typedef unsigned long long t1;typedef t1*t2;
+-void g(){}
++void g(int,t1 const*,t1,t2,t1 const*,int){}
+ void h(){}
+ static __inline__ t1 e(t2 rp,t2 up,int n,t1 v0)
+ {t1 c,x,r;int i;if(v0){c=1;for(i=1;i<n;i++){x=up[i];r=x+1;rp[i]=r;}}return c;}

meta/recipes-support/gmp/gmp_6.3.0.bb

@@ -14,6 +14,7 @@ SRC_URI = "https://gmplib.org/download/${BPN}/${BP}${REVISION}.tar.bz2 \
            file://use-includedir.patch \
            file://0001-Append-the-user-provided-flags-to-the-auto-detected-.patch \
            file://0001-confiure.ac-Believe-the-cflags-from-environment.patch \
+           file://0001-Complete-function-prototype-in-acinclude.m4-for-C23-.patch \
            "
 SRC_URI[sha256sum] = "ac28211a7cfb609bae2e2c8d6058d66c8fe96434f740cf6fe2e47b000d1c20cb"