From: Jano Svitok <jan.svitok@...>
Date: 2007-04-28T06:37:28+09:00
Subject: Re: Building one-click installer compatible C extensions on windows with VS2005

On 4/27/07, bbiker <renard@nc.rr.com> wrote:
> On Apr 27, 11:21 am, "Jano Svitok" <jan.svi...@gmail.com> wrote:
> > On 4/27/07, Harold Hausman <hhaus...@gmail.com> wrote:
> >
> >
> >
> >
> >
> > > Hi.
> >
> > > I had an idea for a quick C extension and thought I'd see what it was
> > > like to build one. I'm pretty familiar with readme.ext as I've done
> > > some things embedding Ruby recently that have all gone splendidly.
> >
> > > However, when I tried first to build my new extension using nmake on a
> > > makefile generated by my extconf.rb I was greeted with lovely errors
> > > about my MSC_VER being unmatch. :D
> >
> > > I've read about this before on the various threads that pop up on this
> > > list from time to time, but just now I think I'm coming to understand
> > > the pain. I circumvented the various MSC_VER checks, and got my
> > > extension to build, but unsurprisingly, when I try to require it into
> > > a script, I see this:
> >
> > > ---------------------------
> > > Microsoft Visual C++ Runtime Library
> > > ---------------------------
> > > Runtime Error!
> >
> > > Program: c:\ruby\bin\ruby.exe
> >
> > > R6034
> >
> > > An application has made an attempt to load the C runtime library incorrectly.
> > > Please contact the application's support team for more information.
> >
> > > ---------------------------
> > > OK
> > > ---------------------------
> >
> > > Yay!
> >
> > > So I can only imagine that the maintainers of the one-click installer
> > > are very happy with their current setup, and I can't really blame
> > > them, it's pretty rad and has worked perfectly for me up until this
> > > point. (:
> >
> > > Various googling and reading hasn't really given me the info I need,
> > > so I have a couple quick questions.
> >
> > > If the one-click installer did happen to be built with 2005, would I
> > > be having this problem?
> >
> > > And, what should I do? Is it possible to build one-click-installer
> > > compatible C extensions with VS2005? Or do I need to switch to cygwin
> > > or MingGW, if so witch?
> >
> > > A million thanks for your time,
> > > -Harold
> >
> > Hi,
> >
> > 1. Ruby 1.8.6. should be compilable by VS2005. The one-click installer
> > recompilation is not that hard... for me it was something about three
> > hours to get it built (learning and fixing included). Just read the
> > readme's and howto's for ruby and oci. I had to manually download
> > sources for some of the bundled-in extensions.
> >
> > 2. If you compile ruby with VS2005 you have to compile all the
> > extensions with it, so binary gems from rubyforge won't be for you.
> >
> > 3. The standard one-click is compiled with VS6, and so are all the
> > binary gems on rubyforge. If you want to be compatible, you can use
> > either VS6 or mingw. cygwin is different.
> >
> > 4. You might be lucky and build VS2005 extension that works with VS6
> > ruby, but you have to avoid some functions. I won't tell you which, I
> > suspect they are those dealing with files, and errno, and... ;-)
> > AFAIK, the problem is in incompatible msvcrtXX.dll.
> >
> > Jano- Hide quoted text -
> >
> > - Show quoted text -
>
> VS6 is no longer available from Microsoft ... so where can someone
> obtain it?
>
> Please, excuse newbie question.
>
> Are you saying that mingw can compile code compatible with mswin32?
>
> Thanks
>
> bbiker

VS6 is not officially available - due to java settlement with sun (the
java version bundled with VS6 was not compliant) - the install files
are on MSDN CDs/DVDs, but you cannot obtain new keys. So you need to
find an old key.

Mingw is binary compatible with VS6 (or, that is what was written here
by other people)