diff --git a/extern/libopenjpeg/SConscript b/extern/libopenjpeg/SConscript
index 7100ecb37fd..837701eeae0 100644
--- a/extern/libopenjpeg/SConscript
+++ b/extern/libopenjpeg/SConscript
@@ -21,4 +21,4 @@ oj_env.BlenderLib ( libname='extern_openjpeg',
                     sources=sources, includes=Split(incs),
                     defines=[],
                     libtype=['core','intern','player'],
-                    priority=[5, 10, 200], compileflags = flags)
+                    priority=[10, 10, 300], compileflags = flags)
diff --git a/extern/libredcode/SConscript b/extern/libredcode/SConscript
index b58e6d5fe25..9fd25ad63c7 100644
--- a/extern/libredcode/SConscript
+++ b/extern/libredcode/SConscript
@@ -13,4 +13,4 @@ env.BlenderLib ( libname='extern_redcode',
                  sources=sources, includes=Split(incs),
                  defines=[],
                  libtype=['core','intern','player'],
-                 priority=[10, 5, 300], compileflags = [])
+                 priority=[5, 5, 200], compileflags = [])
diff --git a/source/blender/blenkernel/intern/blender.c b/source/blender/blenkernel/intern/blender.c
index 1fe6447752e..5dcccc56d06 100644
--- a/source/blender/blenkernel/intern/blender.c
+++ b/source/blender/blenkernel/intern/blender.c
@@ -30,11 +30,15 @@
  * ***** END GPL LICENSE BLOCK *****
  */
 
-#ifndef WIN32 
-    #include <unistd.h> // for read close
-    #include <sys/param.h> // for MAXPATHLEN
+#ifndef _WIN32 
+	#include <unistd.h> // for read close
+	#include <sys/param.h> // for MAXPATHLEN
 #else
-    #include <io.h> // for open close read
+	#include <io.h> // for open close read
+	#define open _open
+	#define read _read
+	#define close _close
+	#define write _write
 #endif
 
 #include <stdlib.h>
diff --git a/source/blender/blenkernel/intern/exotic.c b/source/blender/blenkernel/intern/exotic.c
index 9fb8d17d730..ee3fd59fe9f 100644
--- a/source/blender/blenkernel/intern/exotic.c
+++ b/source/blender/blenkernel/intern/exotic.c
@@ -76,10 +76,14 @@
 #include <fcntl.h>
 #include <string.h>
 
-#ifndef WIN32 
+#ifndef _WIN32 
 #include <unistd.h>
 #else
 #include <io.h>
+#define open _open
+#define read _read
+#define close _close
+#define write _write
 #endif
 
 #include "MEM_guardedalloc.h"
diff --git a/source/blender/imbuf/intern/amiga.c b/source/blender/imbuf/intern/amiga.c
index 3d52a287a31..534e4945aa3 100644
--- a/source/blender/imbuf/intern/amiga.c
+++ b/source/blender/imbuf/intern/amiga.c
@@ -29,8 +29,12 @@
  * ***** END GPL LICENSE BLOCK *****
  */
 
-#ifdef WIN32
+#ifdef _WIN32
 #include <io.h>
+#define open _open
+#define read _read
+#define close _close
+#define write _write
 #endif
 #include "imbuf.h"
 #include "imbuf_patch.h"
diff --git a/source/blender/imbuf/intern/readimage.c b/source/blender/imbuf/intern/readimage.c
index 566df53a25e..05e7921665b 100644
--- a/source/blender/imbuf/intern/readimage.c
+++ b/source/blender/imbuf/intern/readimage.c
@@ -29,11 +29,14 @@
  * $Id$
  */
 
-#ifdef WIN32
+#ifdef _WIN32
 #include <io.h>
 #include <stddef.h>
 #include <sys/types.h>
 #include "mmap_win.h"
+#define open _open
+#define read _read
+#define close _close
 #endif
 
 #include "BLI_blenlib.h"
diff --git a/source/blender/imbuf/intern/util.c b/source/blender/imbuf/intern/util.c
index 231d7254224..c86f9b017bf 100644
--- a/source/blender/imbuf/intern/util.c
+++ b/source/blender/imbuf/intern/util.c
@@ -29,6 +29,13 @@
  * $Id$
  */
 
+#ifdef _WIN32
+#include <io.h>
+#define open _open
+#define read _read
+#define close _close
+#endif
+
 #include "BLI_blenlib.h"
 
 #include "DNA_userdef_types.h"
@@ -275,7 +282,8 @@ static AVCodecContext* get_codec_from_stream(AVStream* stream)
 
 static int isffmpeg (char *filename) {
 	AVFormatContext *pFormatCtx;
-	int            i, videoStream;
+	unsigned int i;
+	int videoStream;
 	AVCodec *pCodec;
 	AVCodecContext *pCodecCtx;