From 9ae577fb07d9aea2f48d7e0d9988f25e24893a63 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sat, 17 Oct 2015 19:23:39 +0200
Subject: thread-safe fftw (needs fftw-3.3.5)

see https://github.com/FFTW/fftw3/issues/16
---
 gtk2_ardour/main.cc | 8 ++++++++
 gtk2_ardour/wscript | 5 +++++
 2 files changed, 13 insertions(+)

(limited to 'gtk2_ardour')

diff --git a/gtk2_ardour/main.cc b/gtk2_ardour/main.cc
index ce7dc4b5d1..e8bfe43aa1 100644
--- a/gtk2_ardour/main.cc
+++ b/gtk2_ardour/main.cc
@@ -25,6 +25,10 @@
 #include <sigc++/bind.h>
 #include <gtkmm/settings.h>
 
+#ifdef HAVE_FFTW35F
+#include <fftw3.h>
+#endif
+
 #include "pbd/error.h"
 #include "pbd/file_utils.h"
 #include "pbd/textreceiver.h"
@@ -283,6 +287,10 @@ int main (int argc, char *argv[])
 		Glib::thread_init();
 	}
 
+#ifdef HAVE_FFTW35F
+	ftwf_make_planner_thread_safe ();
+#endif
+
 #ifdef ENABLE_NLS
 	gtk_set_locale ();
 #endif
diff --git a/gtk2_ardour/wscript b/gtk2_ardour/wscript
index 7b138f7ae2..e0b809608a 100644
--- a/gtk2_ardour/wscript
+++ b/gtk2_ardour/wscript
@@ -291,6 +291,8 @@ def configure(conf):
 
     autowaf.check_pkg(conf, 'fftw3f', uselib_store='FFTW3F',
                       mandatory=True)
+    autowaf.check_pkg(conf, 'fftw3f', uselib_store='FFTW35F',
+                      atleast_version='3.3.5', mandatory=False)
     autowaf.check_pkg(conf, 'flac', uselib_store='FLAC',
                       atleast_version='1.2.1')
     autowaf.check_pkg(conf, 'gthread-2.0', uselib_store='GTHREAD',
@@ -483,6 +485,9 @@ def build(bld):
         obj.source += [ 'lv2_plugin_ui.cc' ]
         obj.use += [ 'SUIL' ]
 
+    if bld.is_defined('HAVE_FFTW35F'):
+        obj.linkflags = ' -lfftw3_threads'
+
     if bld.is_defined('NEED_INTL'):
         obj.linkflags = ' -lintl'
 
-- 
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