[LLVMdev] LLVM tools sufficient to build the cfrontend for windows from MinGW?

[Jeff Cohen]

On Tue, 2 Nov 2004 11:25:44 -0600 (CST)
Chris Lattner <sabre at nondot.org> wrote:

> On Tue, 2 Nov 2004, Jeff Cohen wrote:
> 
> > The problem with building the frontend on Windows is that gcc cannot be
> > bootstrapped using Window's native compiler -- i.e. VC++ -- unlike every
> > other platform.  It can be built on Windows using gcc, of course, but
> > even then only if the entire GNU environment is present.
> 
> Yeah, annoying.  Unfortunately we're not up to fixing GCC :)

Of course not.. you're too busy creating it's replacement :)

> > The real problem is that the bootstrapped frontend binaries built using
> > gcc may not properly link with LLVM binaries built using VC++.  After
> 
> I don't think this is a problem.  In particular, the C front-end doesn't
> use any of the LLVM libraries itself: it just outputs a .ll file to a
> file, then gccas/gccld (separate LLVM tools, built without GCC source)
> operate on the result.  I don't think ABI or linking problems should be an
> issue.

OK, I didn't realize that.

> > I think it will be "challenging" to get cfrontend built and running on
> > Windows.
> 
> I agree to a certain extent.  Certainly the only way that makes sense is
> to use cygwin or mingw to do the job.  If you're willing to do that, it
> should work just fine.  Over the summer, I had llvmgcc working with
> cygwin and it seemed happy.  :)

It's not that big a problem after all.  It will still be a pain to build
it, and most Windows developers won't have the setup needed to do so (I
currently don't), but that's a non-issue as you should be making a
pre-built binary available for download.  It'd be considered bad taste
not to :)  Building from sources is so....  unixy.

> -Chris
> 
> > all, gcc runs on Windows only by deluding itself into thinking it's
> > really running on Unix, and it does this by using a runtime that
> > emulates Unix. This runtime cannot be happy sharing a process with the
> > VC++ runtime.
> >
> >
> >
> > On Tue, 02 Nov 2004 17:33:42 +0100
> > "Henrik Bach" <henrik_bach_llvm at hotmail.com> wrote:
> >
> > > Hi,
> > >
> > > I'm able to build the llvm tools on the MinGW platform: burg, fpcmp, tblgen,
> > > llvm-as, llvm-dis, opt, gccas, llc, llvm-link, lli, gccld, llvm-stub,
> > > analyze and extract.
> > >
> > > I wonder if these tools are sufficient to start build the cfrontend?
> > >
> > > Henrik.
> > >
> > > _________________________________________________________________
> > > Undg_ pop-ups med MSN Toolbar -  http://toolbar.msn.dk hent den gratis!
> > >
> > > _______________________________________________
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> 
> -Chris
> 
> -- 
> http://llvm.org/
> http://nondot.org/sabre/
> 
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