Work around Autoconf bug not to link ldap library to everything

quota-4.03-Work-around-an-AC_CHECK_LIB-bug-in-Autoconf.patch

@@ -0,0 +1,37 @@
+From 47601e462c6606f7a711c093fb1b03580b01ee46 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
+Date: Thu, 7 Jan 2016 10:23:24 +0100
+Subject: [PATCH] Work around an AC_CHECK_LIB bug in Autoconf
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+AC_CHECK_LIB([ldap], [ldap_initialize], [], [...]) should not append -lldap to
+LIBS variable because third AC_CHECK_LIB arugment is defined and
+empty.
+
+But broken autoconf-2.69-21.fc23 thinks empty is undefined and
+defaults to implicit if-found action. That results into linking all
+executables to ldap library and that is unnecessary.
+
+Signed-off-by: Petr Písař <ppisar@redhat.com>
+---
+ configure.ac | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/configure.ac b/configure.ac
+index bb33774..1994945 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -73,7 +73,7 @@ AC_ARG_ENABLE([ldapmail],
+ )
+ AS_IF([test "x$enable_ldapmail" != "xno"], [
+     build_ldap="yes"
+-    AC_CHECK_LIB([ldap], [ldap_initialize], [], [
++    AC_CHECK_LIB([ldap], [ldap_initialize], [:;], [
+         build_ldap=no
+         AS_IF([test "x$enable_ldapmail" = "xyes"], [
+             AC_MSG_ERROR([LDAP support required but library not found.]);
+-- 
+2.5.0
+

quota.spec

@@ -40,6 +40,8 @@ Patch2: quota-4.03-Validate-upper-bound-of-RPC-port.patch
 # Fix build script to work with hardended flags, submitted to upstream
 # <https://sourceforge.net/p/linuxquota/bugs/121/>
 Patch3: quota-4.03-Respect-enviroment-CFLAGS.patch
+# Work around Autoconf bug not to link ldap library to everything, bug #1296455
+Patch4: quota-4.03-Work-around-an-AC_CHECK_LIB-bug-in-Autoconf.patch
 BuildRequires: autoconf
 BuildRequires: automake
 BuildRequires: bash
@@ -149,6 +151,7 @@ Linux/UNIX environment.
 %endif
 %patch2 -p1
 %patch3 -p1
+%patch4 -p1
 # Unpack forgotten LDAP scripts
 tar -xzkf %{SOURCE5}
 # Regenerate build scripts, also because of Respect-enviroment-CFLAGS.patch
@@ -263,6 +266,8 @@ make check
 %changelog
 * Wed Jan 06 2016 Petr Pisar <ppisar@redhat.com> - 1:4.03-1
 - 4.03 bump
+- Work around Autoconf bug not to link ldap library to everything
+  (bug #1296455)
 
 * Thu Jun 18 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1:4.02-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild