diff --git a/net-irc/atheme/files/atheme-5.0.1-with-ldap.patch b/net-irc/atheme/files/atheme-5.0.1-with-ldap.patch
new file mode 100644
--- /dev/null
+++ b/net-irc/atheme/files/atheme-5.0.1-with-ldap.patch
@@ -0,0 +1,29 @@
+diff -r 75af206b48cc -r 7c91655f0352 configure.ac
+--- a/configure.ac	Thu Feb 11 23:13:59 2010 -0500
++++ b/configure.ac	Thu Feb 11 23:35:12 2010 -0500
+@@ -86,6 +86,13 @@
+ 
+ AC_SUBST(POSIX_CRYPTC)
+ 
++AC_ARG_WITH([ldap],
++	[AS_HELP_STRING([--without-ldap],[Disable building ldap auth module.])],
++	[],
++	[with_ldap="auto"])
++
++AS_IF([test "x$with_ldap" != "xno"],
++[
+ # Thank autoconf and openldap developers for making me do all this stuff.
+ LDAP_CFLAGS=""
+ LDAP_LIBS=""
+@@ -108,6 +115,11 @@
+ 	CFLAGS="$saveCFLAGS"
+ 	LIBS="$saveLIBS"
+ ])
++dnl with_ldap != no
++])
++
++AS_IF([test "x$with_ldap" = "xyes" && test "x$LDAP_AUTHC" = "x"],
++[AC_MSG_ERROR([LDAP support was explicitly requested but could not be found.])])
+ 
+ AC_SUBST(LDAP_CFLAGS)
+ AC_SUBST(LDAP_LIBS)