From 949ee91acb55baeb4b8761957eabd2e5a345d2ae Mon Sep 17 00:00:00 2001
From: Mitch Harder <mitch.harder@sabayonlinux.org>
Date: Thu, 8 Dec 2011 11:02:28 -0600
Subject: Fix configure.ac test for pam libs.

A bug report on Gentoo noted that the configure test for pam
wasn't working correctly.
https://bugs.gentoo.org/show_bug.cgi?id=384615

This corrections borrows the configure.ac pam testing method used in xdm.
---
 configure.ac |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index e952473..eaa883a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -14,12 +14,21 @@ AC_PROG_INSTALL
 AM_PROG_CC_C_O
 
 # Checks for libraries.
 AC_CHECK_LIB([crypt], [crypt])
 
-AC_ARG_WITH(pam,AC_HELP_STRING([--without-pam],[build without pam]),
-[],[AC_CHECK_LIB([pam], [pam_open_session])])
+# Check for PAM support
+AC_ARG_WITH(pam, AC_HELP_STRING([--with-pam],[Use PAM for authentication]),
+	[USE_PAM=$withval], [USE_PAM=$use_pam_default])
+if test "x$USE_PAM" != "xno" ; then
+	AC_SEARCH_LIBS(pam_open_session,[pam])
+	AC_CHECK_FUNC(pam_open_session, 
+		[AC_DEFINE(USE_PAM,1,[Use PAM for authentication])],
+		[if test "x$USE_PAM" != "xtry" ; then
+			AC_MSG_ERROR(["PAM support requested, but pam_open_session not found."])
+		 fi])
+fi
 
 AC_CHECK_LIB([ck-connector],[ck_connector_open_session])
 
 # Checks for header files.
 AC_PATH_X
-- 
1.7.3.4