2of1

half a nibble of another

Here are the slides and code examples of the talk that I gave at the 7th DC9723 meet a few weeks ago.

To all those that came; thanks – I hope you found it interesting!

Here are two easy ways to compile 32-bit binaries on a 64-bit system.
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I’ve been looking for a way to compile an app developed with Qt Creator on Linux for Windows.

I came across this but I needed to tweak it before it worked so I decided to blog my own mini-guide (tested working with with Qt 4.6.3).

This assumes that you already have the Qt SDK (for Linux) installed.

1. The first thing to do is download and install the MinGW cross compiler
2. Then download the Windows version of the Qt SDK. As it’s distributed as a Win package, you’ll need to either install it on windows and copy the necessary files across to your linux distro (what I did) or install it through Wine (not sure if this even works). You can cross-compile it as well if you’re being adventurous
3. Place the Qt Win SDK libraries in /usr/lib32/qt4win32 and headers in /usr/include/qt4win32
4. Copy /usr/share/qt4/mkspecs/win32-g++/ to /usr/share/qt4/win32-x-g++/
5. In the above directory, replace qmake.conf with the one found here
6. Make sure that the paths in qmake.conf match those of your system (see NOTE below); specifically QMAKE_CXX, QMAKE_LINK, QMAKE_INCDIR, QMAKE_INCDIR_QT, QMAKE_LIBDIR_QT
7. Run qmake adding –spec win32-x-g++ command line arg. This should cross-compile your app.

NOTE: As my linux box is a x86_64, my /usr/lib is /usr/lib32. Please adjust this accordingly for your setup.

I wrote some Direct2D compatibility headers to allow for cross-compilation using MingW or mingw-w64.
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A while back I wrote a tool to build Direct2D api headers off the public information on MSDN.

Yesterday I noticed that my vlc patch – while compiling fine – crashes on a certain D2D API call.

The reason for this it seems that my generation tool pulls off the API from MSDN in the order that it appears there – i.e. alphabetical order.
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