Can not build Qt 4.6.

Hi,

Has anybody tried building Qt 4.6 (Beta) on Linux (Ubuntu Karmic amd64)?

I've cloned the branch on gitorious, set up all the configuration stuff, opened up projects.pro in my QtCreator, but compiler reported an error:

../../corelib/io/qfsfileengine_unix.cpp:1286: error: ‘QT_MMAP’ was not declared in this scope

Does anybody know what this error is about? QT_MMAP is some sort of macro, right?

Hi steve_smith,

verify that your qplatformdefs.h has the QT_MMAP defines:

#define QT_MMAP ::mmap64
#define QT_MMAP ::mmap

If you are using old mkspecs, you need to update the qplatformdefs.h files.

See the Qt-4.6/mkspecs/linux-g++/qplatformdefs.h file, to see how it should be defined.

Regards Mikael Johansson, ComplexIT Articles