https://github.com/iputils/iputils/pull/601
From: Brahmajit Das <listout@listout.xyz>
Date: Sun, 22 Jun 2025 07:30:38 +0530
Subject: [PATCH] meson.build: strict check for error function

Along with checking for presense of error.h we should also check if we
can use the error function and it's getting properly linked.

Dowstream-bug: https://bugs.gentoo.org/947680
Signed-off-by: Brahmajit Das <listout@listout.xyz>
--- a/meson.build
+++ b/meson.build
@@ -143,7 +143,7 @@ endif
 foreach h : [
 	'error.h',
 ]
-	if cc.has_header(h)
+	if cc.has_header(h) and cc.has_function('error')
 		conf.set('HAVE_' + h.to_upper().underscorify(), 1,
 			description : 'Define if ' + h + ' can be included.')
 	endif
-- 
2.50.0