Fix build process on FreeBSD

diff --git a/configure.ac b/configure.ac
index a8c1e752932f165193f3635ee601dbd25afbd2ad..53db3191cd8da11bc603e86d10ab565151e4f62c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -13,7 +13,7 @@ AC_CONFIG_MACRO_DIR(m4)
 # Initialize Automake
 AM_INIT_AUTOMAKE([-Wall])
 # Configure with --enable-silent-rules to cut down on clutter
-AM_SILENT_RULES
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
 ### LIBRARY VERSIONING ########################################################
 # Only update immediately before a public release