From 143e346dd50a71a26ea697561e18aa9aa92f796d Mon Sep 17 00:00:00 2001
From: Alejandro Colomar <alx@kernel.org>
Date: Mon, 12 Dec 2022 19:23:24 +0100
Subject: [PATCH] Assume strdup(3) exists
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It is required by POSIX.1-2001.

Link: <https://github.com/shadow-maint/shadow/pull/600>
Cc: Christian Göttsche <cgzones@googlemail.com>
Cc: Iker Pedrosa <ipedrosa@redhat.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
---
 configure.ac  | 1 -
 lib/defines.h | 6 ------
 2 files changed, 7 deletions(-)

diff --git a/configure.ac b/configure.ac
index c5bf4a64..f7f0119a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -102,7 +102,6 @@ AC_TYPE_GETGROUPS
 AC_FUNC_UTIME_NULL
 AC_REPLACE_FUNCS(putgrent putpwent putspent)
 AC_REPLACE_FUNCS(sgetgrent sgetpwent sgetspent)
-AC_REPLACE_FUNCS(strdup)
 
 AC_CHECK_FUNC(setpgrp)
 AC_CHECK_FUNC(secure_getenv, [AC_DEFINE(HAS_SECURE_GETENV,
diff --git a/lib/defines.h b/lib/defines.h
index ed2d14de..748e18da 100644
--- a/lib/defines.h
+++ b/lib/defines.h
@@ -232,12 +232,6 @@ static inline void memzero(void *ptr, size_t size)
 #endif
 #endif
 
-#ifdef sun			/* hacks for compiling on SunOS */
-# ifndef SOLARIS
-extern char *strdup ();
-# endif
-#endif
-
 /*
  * string to use for the pw_passwd field in /etc/passwd when using
  * shadow passwords - most systems use "x" but there are a few