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https://bugs.gentoo.org/836708
https://github.com/xdp-project/xdp-tools/pull/309
From c9956abbfbd238bd2eb98c67ea002bfce29063a4 Mon Sep 17 00:00:00 2001
From: Stijn Tintel <stijn@linux-ipv6.be>
Date: Wed, 29 Mar 2023 04:25:06 +0300
Subject: [PATCH] libxdp: fix build on musl
In musl, PATH_MAX is defined in limits.h. Include it in libxdp.c to fix
building systems using musl libc.
libxdp.c: In function 'find_bpffs':
libxdp.c:406:33: error: 'PATH_MAX' undeclared (first use in this function)
406 | static char bpf_wrk_dir[PATH_MAX];
| ^~~~~~~~
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
--- a/lib/libxdp/libxdp.c
+++ b/lib/libxdp/libxdp.c
@@ -22,6 +22,7 @@
#include <fcntl.h>
#include <inttypes.h>
#include <dirent.h>
+#include <limits.h>
#include <linux/err.h> /* ERR_PTR */
#include <linux/if_link.h>
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