From aaa597a231c47af295076f97f9d9d41a0620cf98 Mon Sep 17 00:00:00 2001
From: Art Cancro <ajc@uncensored.citadel.org>
Date: Tue, 20 Dec 2011 15:29:24 -0500
Subject: [PATCH] configure script check for libev version 4 or greater

---
 citadel/configure.ac | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/citadel/configure.ac b/citadel/configure.ac
index aa19866af..0ac40df44 100644
--- a/citadel/configure.ac
+++ b/citadel/configure.ac
@@ -582,7 +582,7 @@ AC_CHECK_LIB(cares, ares_init,
 
 saved_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS $SERVER_LIBS"
-dnl Check for libevent
+dnl Check for c-ares
 AC_CHECK_HEADER(ares.h,
 	[AC_CHECK_LIB(cares, ares_init,
 		[
@@ -600,7 +600,7 @@ CFLAGS="$saved_CFLAGS"
 
 saved_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS $SERVER_LIBS"
-dnl Check for libevent
+dnl Check for libev
 AC_CHECK_HEADER(ev.h,
 	[AC_CHECK_LIB(ev, libcitadel_version_string,
 		[
@@ -617,6 +617,26 @@ AC_CHECK_HEADER(ev.h,
 )
 CFLAGS="$saved_CFLAGS"
 
+AC_MSG_CHECKING(Checking version of libev)
+AC_TRY_RUN([
+ 	#include <ev.h>
+ 	main() {
+		printf("libev is version %d.%d\n", ev_version_major(), ev_version_minor());
+		if (ev_version_major() >= 4) {
+ 			exit(0);
+		}
+	exit(1);
+ 	}
+ ],
+		[
+			AC_MSG_RESULT(This will do just fine, thank you)
+		],
+		[ 
+			AC_MSG_ERROR(Citadel requires a newer version of libev.  More info: http://www.citadel.org/doku.php/installation:start)
+		]
+)
+
+
 # The big search for OpenSSL
 if test "$with_ssl" != "no"; then
 	saved_LIBS="$LIBS"
-- 
2.30.2