Win-GHC with GnuWin32 toolset--Mingw32 replacement
p.tanski at gmail.com
Sun Jan 7 14:41:41 EST 2007
On Jan 7, 2007, at 2:14 PM, Neil Mitchell wrote:
> Those were merely our thoughts on how to do it, alas we haven't had
> the time yet to get anything implemented. The old makefile for Windows
> was written in .bat and that did the vsvars trick, hardcoded to look
> at various VSnn combinations, in order of most recent to oldest.
Ah. Nothing like a little exploration :) Does ./build/platform.py
sound like the right place to do it? I was looking into this because
it is a user-convenience (or well-designed build system) issue. In
ghc's case I need to ensure the build environment is correct using a
configure script; I also wanted to try adding a bootstrap-build of
ghc-stage1 using yhc since without -fvia-C I don't think Win-GHC can
bootstrap from .hc files or unregisterised.
>> Because each system runs under its own command environment, I would
>> guess. (I am guessing that, if you are using SCons, you already
>> tried propagating the resulting external environment to the ENV.)
> I think these experiments might have been pre-scons, I'm not sure if
> we've tried it seriously since then.
It might be harder in Scons if you need to define more Scons-
environment variables than 'path'.
>> You shouldn't even have to parse the file much: each @set command is
>> located on one line, for example:
>> @set INCLUDE=%VCINSTALLDIR%\ATLMFC\INCLUDE;%VCINSTALLDIR%\INCLUDE;%
>> so just grab the line and execute (as a shell command), right?
> Yes, that should be sufficient. Batch files can have goto's which
> constitute structure, but I can't remember if any of the vsvars files
> I looked up had any goto's in them.
The vcvarsall.bat in the \Visual Studio X\VC\ directory has goto's
that essentially redirect to the \Visual Studio X\Common7\Tools
\vsvars32.bat; my vsvars32.bat doesn't have any goto's in it.
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