frr: add a patch to correctly check presence of python from pkg-config

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-protocols/frr/frr/0001-m4-ax_python.m4-check-for-python-x.y-emded.pc-not-py.patch

@@ -0,0 +1,28 @@
+From 6a2984718d7c47612b07be46d663e7b5e5b7c57d Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex@linutronix.de>
+Date: Wed, 9 Nov 2022 20:24:45 +0100
+Subject: [PATCH] m4/ax_python.m4: check for python-x.y-emded.pc, not
+ python-x.y.pc
+
+Only the embed version includes necessary linker flags to link
+with libpython.
+
+Upstream-Status: Submitted [https://github.com/FRRouting/frr/pull/12298]
+Signed-off-by: Alexander Kanavin <alex@linutronix.de>
+---
+ m4/ax_python.m4 | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/m4/ax_python.m4 b/m4/ax_python.m4
+index 91d12b99b..f5e603b96 100644
+--- a/m4/ax_python.m4
++++ b/m4/ax_python.m4
+@@ -206,7 +206,7 @@ AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+     AC_MSG_CHECKING([whether pkg-config python-${tryver} is available])
+     unset PYTHON_CFLAGS
+     unset PYTHON_LIBS
+-    pkg="python-${tryver}"
++    pkg="python-${tryver}-embed"
+     pkg="${pkg%-}"
+     _PKG_CONFIG([PYTHON_CFLAGS], [cflags], [${pkg}])
+     _PKG_CONFIG([PYTHON_LIBS], [libs], [${pkg}])

meta-networking/recipes-protocols/frr/frr_8.3.1.bb

@@ -15,7 +15,8 @@ SRC_URI = "git://github.com/FRRouting/frr.git;protocol=https;branch=stable/8.3 \
            file://0001-bgpd-avoid-notify-race-between-io-and-main-pthreads.patch \
            file://0001-bgpd-Make-sure-hdr-length-is-at-a-minimum-of-what-is.patch \
            file://frr.pam \
-	      "
+           file://0001-m4-ax_python.m4-check-for-python-x.y-emded.pc-not-py.patch \
+           "
 
 SRCREV = "a74f7a9ad9623e6f9654fe4a7177e5da0b194828"