package/mpir: fix build with gcc >= 14.x

Backport an upstream patch fixing a build issue with gcc >= 14.x.

Fixes:

  https://autobuild.buildroot.net/results/d144ec967b7db34de56eaf34bb436460b8c924ed/

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/mpir/0003-fix-configure-with-gcc-14.patch

@@ -0,0 +1,31 @@
+From 4ff3b770cbf86e29b75d12c13e8b854c74bccc5a Mon Sep 17 00:00:00 2001
+From: Reno Dakota <paparodeo@proton.me>
+Date: Wed, 4 Dec 2024 23:09:03 +0000
+Subject: [PATCH] fix configure with gcc-14
+
+move function definition above caller to fix compile error
+
+> configure:6438: gcc -m64  conftest.c >&5
+> conftest.c: In function 'f':
+> conftest.c:13:44: error: implicit declaration of function 'h' [-Wimplicit-function-declaration]
+
+Upstream: https://github.com/wbhart/mpir/commit/4ff3b770cbf86e29b75d12c13e8b854c74bccc5a
+Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
+---
+ acinclude.m4 | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/acinclude.m4 b/acinclude.m4
+index 620a629ef..cd917567f 100644
+--- a/acinclude.m4
++++ b/acinclude.m4
+@@ -590,8 +590,8 @@ extern
+ __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;}
+ void f(){static const struct{t1 n;t1 src[9];t1 want[9];}d[]={{1,{0},{1}},};t1 got[9];int i;
+-for(i=0;i<1;i++){if(e(got,got,9,d[i].n)==0)h();g(i,d[i].src,d[i].n,got,d[i].want,9);if(d[i].n)h();}}
+ void h(){} void g(){}
++for(i=0;i<1;i++){if(e(got,got,9,d[i].n)==0)h();g(i,d[i].src,d[i].n,got,d[i].want,9);if(d[i].n)h();}}
+ #else
+ int dummy;
+ #endif

package/mpir/mpir.mk

@@ -11,6 +11,7 @@ MPIR_LICENSE_FILES = COPYING.LIB
 MPIR_INSTALL_STAGING = YES
 MPIR_DEPENDENCIES = gmp host-yasm
 # 0002-Fix-configure-failures-with-Xcode12.patch
+# 0003-fix-configure-with-gcc-14.patch
 MPIR_AUTORECONF = YES
 
 # We don't care about the documentation