diff --git a/r2-bindings/rules.mk b/r2-bindings/rules.mk
index 650c830411..7ba951f08c 100644
--- a/r2-bindings/rules.mk
+++ b/r2-bindings/rules.mk
@@ -14,7 +14,7 @@ w32:
 	LDFLAGS="-L${W32PY}/libs ${LDFLAGS}" \
 	CFLAGS="-Wl,--enable-auto-import -L../../radare2-w32-${VERSION} ${CFLAGS}" \
 	export CC CXX CFLAGS LDFLAGS ; \
-	${MAKE} CC=i486-mingw32-gcc CXX=i486-mingw32-g++ \
+	${MAKE} CC=${CC} CXX=${CXX}
 
 %.${SOEXT}: ../vapi/%.vapi
 ifeq (${LANG},cxx)
diff --git a/r2-bindings/vapi/r_util.vapi b/r2-bindings/vapi/r_util.vapi
index ab8bcf836d..36e0edbeff 100644
--- a/r2-bindings/vapi/r_util.vapi
+++ b/r2-bindings/vapi/r_util.vapi
@@ -117,7 +117,7 @@ namespace Radare {
 		public void prepend(owned G foo);
 		public RListIter<G> iterator();
 		public RList();
-		public uint length();
+		public int length();
 		//public bool next();
 		public bool del_n(int n);
 		public bool get_top();
diff --git a/sys/mingw32-python.sh b/sys/mingw32-python.sh
index 81f4bfdede..3cdbff8ed5 100755
--- a/sys/mingw32-python.sh
+++ b/sys/mingw32-python.sh
@@ -1,10 +1,32 @@
 #!/bin/sh
-
 cd `dirname $PWD/$0`
 cd ../r2-bindings
+if [ -x /usr/bin/i686-w64-mingw32-gcc ]; then
+    C=i686-w64-mingw32-gcc
+    H=i686-unknown-windows
+    G=i686-w64-mingw32-g++
+elif [ -x /usr/bin/pacman ]; then
+    C=i486-mingw32-gcc
+    H=i486-unknown-windows
+    G=i486-mingw32-g++
+elif [ `uname` = Darwin ]; then
+    C=i386-mingw32-gcc
+    H=i386-unknown-windows
+    G=i386-mingw32-g++
+elif [ -x /usr/bin/apt-get ]; then
+    C=i586-mingw32msvc-gcc
+    H=i586-unknown-windows
+    G=i586-mingw32msvc-g++
+else
+    echo "mingw32 required in some version, nothing found!"
+    exit 1
+fi
+
 make clean
-./configure --enable-devel --prefix=/usr || exit 1
+./configure --with-cc=$C --with-cxx=$G --enable=python --host=$H --with-ostype=windows --prefix=/usr || exit 1
+
 sudo make install-vapi
+
 #make python CC=i486-mingw32-gcc CXX=i486-mingw32-g++ || exit 1
-make w32 CC=i486-mingw32-gcc CXX=i486-mingw32-g++ || exit 1
+make w32 CC=$C CXX=$G || exit 1
 make w32dist