Bugfix: fix linking when OpenCL is not detected
diff --git a/configure.ac b/configure.ac
index 95ce0f0..2d38c41 100644
--- a/configure.ac
+++ b/configure.ac
@@ -123,6 +123,8 @@ if test "x$opencl" != xno; then
found_opencl=1
],
[AC_MSG_RESULT(no)
+ OPENCL_FLAGS=
+ OPENCL_LIBS=
found_opencl=0])
LIBS=$SAVED_LIBS
CFLAGS=$SAVED_CFLAGS