Enable silent build (can be overridden with 'make V=1') if the version of autotools being used is new enough.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1185 632fc199-4ca6-4c93-a231-07263d6284db
diff --git a/configure.ac b/configure.ac
index 34eea29..6085b03 100644
--- a/configure.ac
+++ b/configure.ac
@@ -11,6 +11,8 @@
# Always build with prototypes
AC_DEFINE([HAVE_PROTOTYPES], 1, [Define if your compiler supports prototypes])
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+
# Checks for programs.
SAVED_CFLAGS=${CFLAGS}
SAVED_CPPFLAGS=${CPPFLAGS}