From 9cabc1bb9a866336c6709afbcd0063b3d4f49855 Mon Sep 17 00:00:00 2001
From: Tim Mayberry <mojofunk@gmail.com>
Date: Mon, 3 Aug 2015 23:26:54 +1000
Subject: [PATCH] Fix MIDI input on Portaudio Backend with 32bit Windows
 release/optimized builds

MIDI input doesn't work with -O3 or -O2 optimization levels, no real idea why
at this point. So just append -O0 to CXXFLAGS to override previous optimization
flags for compiling the PortaudioBackend files
---
 libs/backends/portaudio/wscript | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libs/backends/portaudio/wscript b/libs/backends/portaudio/wscript
index 9c661d83b0..967b6044d5 100644
--- a/libs/backends/portaudio/wscript
+++ b/libs/backends/portaudio/wscript
@@ -40,3 +40,6 @@ def build(bld):
                    'ARDOURBACKEND_DLL_EXPORTS',
                    'USE_MMCSS_THREAD_PRIORITIES'
                   ]
+    if bld.env['build_target'] == 'mingw':
+        # MIDI input doesn't work with -O3 or -O2 so override
+        obj.cxxflags = [ '-O0' ]