MinGW

Cross development using Gentoo should be done with the crossdev tool. An alternative is running your Windows compiler using the Windows emulator Wine.

Running MinGW on Linux using Wine
How to run MinGW  with Wine: mkdir win32 cd win32 binutils-2.17.50-20060824-1.tar.gz gcc-core-3.4.5-20060117-1.tar.gz gcc-g++-3.4.5-20060117-1.tar.gz mingw-runtime-3.13-20070825-1.tar.gz w32api-3.10.tar.gz mkdir mingw tar -Cmingw -xvzf binutils-2.17.50-20060824-1.tar.gz ... rm *.tar.gz test.cpp wine cmd path z:\home\username\win32\mingw\bin g++ test.cpp
 * Install Wine
 * Create a directory to be used as the root of your fake Windows box, e.g.:
 * Download MinGW essential packages, e.g.:
 * Unpack into a new MinGW directory and clean up tarballs, e.g.:
 * Create a source file :
 * Start  using Wine:
 * Set path in CMD, e.g.:
 * And compile test.cpp:

wxWidgets
As I cannot figure out how to build wxWidgets without MSYS, and MSYS is a real pain under Wine (even though it does work), I recommend bootstrapping wxWidgets using MSYS on a Windows box: ./configure make The entire wxWidgets directory can then be copied to the Linux machine. The  command will not work properly, but you can run it and adapt the options to your setup. When not installed, you can find  in a subdir, e.g.  . The output of ./msw-ansi-release-2.8 --cxxflags --libs would be something like -I/usr/local/lib/wx/include/msw-ansi-release-2.8 -I/usr/local/include/wx-2.8 -DWXUSINGDLL -D__WXMSW__ -mthreads -L/usr/local/lib -mthreads  -Wl,--subsystem,windows -mwindows -lwx_msw_aui-2.8 -lwx_msw_xrc-2.8 -lwx_msw_qa-2.8 -lwx_msw_html-2.8 -lwx_msw_adv-2.8 -lwx_msw_core-2.8 -lwx_base_xml-2.8 -lwx_base_net-2.8 -lwx_base-2.8 You could create a BATCH file for compiling, e.g.: @echo off set root=z:/home/username/win32 path %root%/mingw/bin set   wxlib=%root%/wxWidgets-2.8.4/lib set   wxinc=%root%/wxWidgets-2.8.4/include set wxconfig=%wxlib%/wx/include/msw-ansi-release-2.8 echo PATH: %path% echo WxWidgets includes: %wxinc% echo WxWidgets includes: %wxconfig% echo WxWidgets libraries: %wxlib% echo on g++ -c -I%wxconfig% -I%wxinc% -DWXUSINGDLL -D__WXMSW__ -mthreads minimal.cpp g++ minimal.o -L%wxlib% -mthreads  -Wl,--subsystem,windows -mwindows -lwx_msw_aui-2.8 -lwx_msw_xrc-2.8 -lwx_msw_qa-2.8 -lwx_msw_html-2.8 -lwx_msw_adv-2.8 -lwx_msw_core-2.8 -lwx_base_xml-2.8 -lwx_base_net-2.8 -lwx_base-2.8 -o minimal.exe