WxHaskell/0.90

Building wxHaskell

For all platforms installation is straightforward, provided that:

1. wx-config is somewhere in the path
2. The WXWIN environment variable points to the root of your wxWidgets installation
3. WINDOWS PLATFORMS ONLY: You may also need to set WXCFG=gcc_dll\mswu

You can then install wxhaskell as follows (in a Windows cmd.exe shell, not an MSys shell):

> cabal update
> cabal install wx

Note that on Windows 7 machines, your command window must be running as Administrator, or you must use the '--user' flag to install to a local directory.

Note that on Unix systems, you may prefer something like

> sudo cabal install --global wx

Windows developers who don't update environment variables can do something like this in an MS-DOS shell:

> Set CPLUS_INCLUDE_PATH=C:\MinGW\include\c++\3.4.5;C:\MinGW\include\c++\3.4.5\mingw32\
> Set WXWIN=C:\path\to\wxWidgets-2.9.3
> Set WXCFG=gcc_dll\mswu
> cabal install wx

The Windows installation is global by default.

Out of memory errors

There have been reports of out of memory errors when compiling wxcore on some machines, notably 64 bit Linux hosts. Wxcore contains some very large auto-generated source files, and increasing the memory available to the GHC runtime can help.

Try something like:

> export GHCRTS='-M512m'

to allocate 512 MB to the GHC RTS. This has been reported to be sufficient.