frr: Fix build on newer musl

provide GNU like basename on non-glibc systems

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-protocols/frr/frr/0001-zebra-Mimic-GNU-basename-API-for-non-glibc-library-e.patch

@@ -0,0 +1,34 @@
+From 49aeccbec4bf620bb594999bbd4a9de669a3984c Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 15 Mar 2024 14:34:06 -0700
+Subject: [PATCH] zebra: Mimic GNU basename() API for non-glibc library e.g.
+ musl musl only provides POSIX version of basename and it has also removed
+ providing it via string.h header [1] which now results in compile errors with
+ newer compilers e.g. clang-18
+
+[1] https://git.musl-libc.org/cgit/musl/commit/?id=725e17ed6dff4d0cd22487bb64470881e86a92e7
+
+Upstream-Status: Submitted [https://github.com/FRRouting/frr/pull/15561/]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ zebra/zebra_netns_notify.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/zebra/zebra_netns_notify.c b/zebra/zebra_netns_notify.c
+index 1bb1292e34..d55df2f62d 100644
+--- a/zebra/zebra_netns_notify.c
++++ b/zebra/zebra_netns_notify.c
+@@ -41,6 +41,10 @@
+ #define ZEBRA_NS_POLLING_INTERVAL_MSEC     1000
+ #define ZEBRA_NS_POLLING_MAX_RETRIES  200
+ 
++#if !defined(__GLIBC__)
++#define basename(src) (strrchr(src,'/') ? strrchr(src,'/')+1 : src)
++#endif
++
+ DEFINE_MTYPE_STATIC(ZEBRA, NETNS_MISC, "ZebraNetNSInfo");
+ static struct event *zebra_netns_notify_current;
+ 
+-- 
+2.44.0
+

meta-networking/recipes-protocols/frr/frr_9.1.bb

@@ -12,6 +12,7 @@ LIC_FILES_CHKSUM = "file://doc/licenses/GPL-2.0;md5=b234ee4d69f5fce4486a80fdaf4a
 
 SRC_URI = "git://github.com/FRRouting/frr.git;protocol=https;branch=stable/9.1 \
            file://frr.pam \
+           file://0001-zebra-Mimic-GNU-basename-API-for-non-glibc-library-e.patch \
            "
 
 SRCREV = "ca2d6f0f1e000951224a18973cc1827f7f5215b5"