From 0f6ebe5649902dea9456c6598bc28e694c422336 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Tue, 9 Feb 2010 17:24:16 +0100
Subject: Use OpenCL for much faster diffraction calculation

---
 configure.ac | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 49a90a8a..fe58ccbd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -30,13 +30,24 @@ AC_ARG_WITH(gsl,
  GSL_LIBS="-L$withval/lib -lgsl -lgslcblas"],
 [GSL_LIBS="-lgsl -lgslcblas"])
 
+AC_MSG_CHECKING([whether to use OpenCL])
+AC_ARG_ENABLE(opencl,
+[AS_HELP_STRING([--enable-opencl], [Enable the use of OpenCL])],
+[OPENCL_CFLAGS=""
+ OPENCL_LIBS="-lOpenCL"
+ AC_MSG_RESULT([yes])
+ AC_DEFINE([HAVE_OPENCL], [1], [Define to 1 if OpenCL is available])
+ have_opencl=true],
+[AC_MSG_RESULT([no])])
+
 havegtk=false
 AM_PATH_GTK_2_0(2.0.0, havegtk=true,
 AC_MSG_WARN([GTK not found.  hdfsee will not be built.]))
 
 AM_CONDITIONAL([HAVE_GTK], test x$havegtk = xtrue)
+AM_CONDITIONAL([HAVE_OPENCL], test x$have_opencl = xtrue)
 
-CFLAGS="$CFLAGS $HDF5_CFLAGS $GTK_CFLAGS $GSL_CFLAGS"
-LIBS="$LIBS $HDF5_LIBS -lm -lz $GSL_LIBS $GTK_LIBS -lgthread-2.0 -lutil"
+CFLAGS="$CFLAGS $HDF5_CFLAGS $GTK_CFLAGS $GSL_CFLAGS $OPENCL_CFLAGS"
+LIBS="$LIBS $HDF5_LIBS -lm -lz $GSL_LIBS $GTK_LIBS $OPENCL_LIBS -lgthread-2.0 -lutil"
 
 AC_OUTPUT(Makefile src/Makefile data/Makefile)
-- 
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