From 0fc37619574e697ae1ec6d1040f8a07670605f12 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Mon, 15 Aug 2022 15:19:34 +0200
Subject: [PATCH] libxt_coova: Use constructor instead of _init()

The _init() function collides with a _init() function in crti.o.
This results in the following error in OpenWrt:
arc-openwrt-linux-gnu/bin/ld: libxt_coova.o: in function `_init':
/lib/gcc/arc-openwrt-linux-gnu/11.3.0/crti.o:(.init+0x4): first defined here
collect2: error: ld returned 1 exit status
make[7]: *** [Makefile:22: libxt_coova.so] Error 1

Fix this by suing a constructor attribute instead. This function will
still be called after the shared library was loaded.

Fixes: #553
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 src/linux/libxt_coova.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/src/linux/libxt_coova.c
+++ b/src/linux/libxt_coova.c
@@ -126,7 +126,7 @@ static struct xtables_match coova_mt6_re
 	.extra_opts    = coova_opts,
 };
 
-void _init(void)
+void __attribute__ ((constructor)) xtables_init(void)
 {
 	xtables_register_match(&coova_mt_reg);
 	xtables_register_match(&coova_mt6_reg);
