diff -rupN hydrogen-0.9.5.old/gui/src/MainForm.cpp hydrogen-0.9.5/gui/src/MainForm.cpp
--- hydrogen-0.9.5.old/gui/src/MainForm.cpp	2011-02-08 04:15:04.000000000 -0500
+++ hydrogen-0.9.5/gui/src/MainForm.cpp	2012-01-16 15:44:14.137527313 -0500
@@ -70,6 +70,7 @@ using namespace H2Core;
 
 #include <memory>
 #include <cassert>
+#include <unistd.h>
 
 using namespace std;
 using namespace H2Core;
diff -rupN hydrogen-0.9.5.old/gui/src/SongEditor/SongEditor.cpp hydrogen-0.9.5/gui/src/SongEditor/SongEditor.cpp
--- hydrogen-0.9.5.old/gui/src/SongEditor/SongEditor.cpp	2010-03-28 06:06:05.000000000 -0400
+++ hydrogen-0.9.5/gui/src/SongEditor/SongEditor.cpp	2012-01-16 15:26:17.172588849 -0500
@@ -23,6 +23,7 @@
 #include <assert.h>
 #include <algorithm>
 #include <memory>
+#include <unistd.h>
 
 #include <hydrogen/Song.h>
 #include <hydrogen/hydrogen.h>
diff -rupN hydrogen-0.9.5.old/libs/hydrogen/src/IO/portmidi_driver.cpp hydrogen-0.9.5/libs/hydrogen/src/IO/portmidi_driver.cpp
--- hydrogen-0.9.5.old/libs/hydrogen/src/IO/portmidi_driver.cpp	2010-02-01 16:06:17.000000000 -0500
+++ hydrogen-0.9.5/libs/hydrogen/src/IO/portmidi_driver.cpp	2012-01-16 15:58:07.592740458 -0500
@@ -30,6 +30,8 @@
 
 #ifdef WIN32
 #include <windows.h>
+#else
+#include <unistd.h>
 #endif
 
 #ifdef PORTMIDI_SUPPORT