This file is part of mingw-cross-env. See doc/index.html for further information. The native build complains about: "You are building a 64-bit application, but using a 32-bit version of Qt. Check your build configuration." diff -ur a/mkspecs/macx-g++/qmake.conf b/mkspecs/macx-g++/qmake.conf --- a/mkspecs/macx-g++/qmake.conf 2010-09-26 23:32:05.000000000 +1000 +++ b/mkspecs/macx-g++/qmake.conf 2010-09-26 23:31:29.000000000 +1000 @@ -13,8 +13,8 @@ QT += core gui QMAKE_INCREMENTAL_STYLE = sublib -QMAKE_CC = gcc -QMAKE_CXX = g++ +QMAKE_CC = gcc -arch i386 +QMAKE_CXX = g++ -arch i386 include(../common/mac-g++.conf)