configure.ac: Require libtool 2.4.

diff --git a/configure.ac b/configure.ac
index bfcb85e72e37db95ddfdb65f741b2e337ca9d40d..6064f08d64e638b92ca4896337ee0f8ef296b08c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -24,6 +24,7 @@ AC_CONFIG_SRCDIR([src/coloredstderr.c])
 
 AM_PROG_AR
 AM_INIT_AUTOMAKE([foreign -Wall -Werror])
+LT_PREREQ([2.4])
 LT_INIT([disable-static])
 
 AC_PROG_CC