https://github.com/FRRouting/frr/commit/0ef71391f0fb15039550a09c218977fa3e1abaf1.patch
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

Signed-off-by: Khem Raj <raj.khem@gmail.com>
--- a/zebra/zebra_netns_notify.c
+++ b/zebra/zebra_netns_notify.c
@@ -42,6 +42,10 @@
 #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;