Framework for supporting SIMD acceleration
Designed to impose minimal changes on the "normal" code.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@3645 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/jpeg/configure.ac b/common/jpeg/configure.ac
index 79bdb45..c2263f2 100644
--- a/common/jpeg/configure.ac
+++ b/common/jpeg/configure.ac
@@ -72,6 +72,14 @@
[AC_DEFINE([NEED_BSD_STRINGS], 1,
[Define if you have BSD-like bzero and bcopy])])
+# SIMD is optional
+# todo: detect automatically when it can be enabled
+AC_ARG_WITH([simd],
+ AC_HELP_STRING([--with-simd],[Include accelerated SIMD routines.]))
+if test "x${with_simd}" != "xno"; then
+ AC_DEFINE([WITH_SIMD], [1], [Use accelerated SIMD routines.])
+fi
+
# jconfig.h is the file we use, but we have another before that to
# fool autoheader. the reason is that we include this header in our
# API headers, which can screw things up for users of the lib.