On Jan 7, 2007, at 3:03 PM, Neil Mitchell wrote:
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.
I would have thought that was unlikely. Yhc can't even bootstrap Yhc
yet, and from my memory GHC requires GHC 5.04 or greater to build. Yhc
is quite a way behind that in terms of language features etc. I
recommend you first try and rewrite GHC in Haskell 98 ;)
From what I have seen in some parts of GHC, that is, in the Main
driver, Code Generator (CodeGen), Cmm and Native Code Generator
(NCG), the Haskell used is fairly standard Haskell98. I don't know
about the rest (the *really* interesting Haskell stuff); general
types such as Data.Generics, tuples and derive-able classes are
handled with preprocessor macros and such. What? When Template
Haskell could do better? Well, some of the base libraries contain
ghc-specific rewrite rules. In any case, my point is I don't think
Yhc has that far to go--I could be way off :(
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.
The one in my VC98 installation has some if's in it, so a little more
complex than just set's. It's also named vcvars32.bat instead of
vSvars32.bat.
You would think MS would attempt to maintain some consistency. In
that case the best thing to do is query the main environment
variables (I will have to research these more), run the batch file
and then query the known environment variables, such as %INCLUDE% and
store those settings *both* for the build and for each installation
(Win-GHC will require CL installed on every machine where it is used,
of course). An alternative solution would be to query the Registry
(say, KEY_CURRENT_USER\Software\Microsoft\VisualStudio\[version]\
[something--haven't found out yet]). I have to find a good program
for this purpose.
Cheers,
Pete
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