Preview for iOS build - ./configure -xplatform unsupported/macx-ios-clang - fatal errors on OS X 10.8.4

[eobdam]

git clone git://gitorious.org/qt/qt5.git qt5
cd qt5
git checkout stable
perl init-repository --no-webkit
./configure -xplatform unsupported/macx-ios-clang -developer-build -opensource -nomake examples -nomake tests -release -sdk iphoneos6.1 -v (same problem with simulator)

Standard installation of all requirements

Some errors
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk/usr/include/sys/_types.h:33:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk/usr/include/machine/_types.h:32:10: fatal error: 'i386/_types.h' file not found
#include "i386/_types.h"

-I/Users/eobdam/qt5/qtbase/mkspecs/unsupported/macx-ios-clang/ios -o libpng.o libpng.cpp
libpng.cpp:42:10: fatal error: 'png.h' file not found
#include <png.h>

etc.

Has anyone Preview for iOS up and running? Configuration script? Any suggestions?