From: Brian Takita <brian.takita@...>
Date: 2006-10-19T14:43:14+09:00
Subject: Re: Cross Compiling Ruby Extension

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On 10/18/06, Brian Takita <brian.takita@gmail.com> wrote:
>
> On 10/18/06, Mauricio Fernandez <mfp@acm.org> wrote:
> >
> > On Wed, Oct 18, 2006 at 04:58:53PM +0900, Brian Takita wrote:
> > > Hello,
> > >
> > > I'm attempting to cross compile a ruby extension for Windows from a
> > Linux
> > > box.
> > > Im running Ubuntu 6.06, Ruby 1.8.5 , and mingw gcc 3.4.4.
> > >
> > > I attempted to follow Mauricio Fernandez's instructions
> > > http://eigenclass.org/hiki.rb?cross+compiling+rcovrt#f01
> > >
> > > The file compiled but it appears that it is still a Linux binary.
> > > json_ext.so: ELF 32-bit LSB shared object, Intel 80386, version 1
> > (SYSV),
> > > not stripped
> >
> > You are using mkrf instead of mkmf, so things work a bit differently.
> >
> > $ cat extconf.rb
> > require 'rubygems'
> > require 'mkrf'
> >
> > dir = File.dirname(__FILE__)
> > Mkrf::Generator.new('json_ext', "#{dir}/*.c")
> > $ cat > extconf.rb
> > require 'mkmf'
> > create_makefile "json_ext"
> > $ ruby -I ~/usr/ruby-mingw32/lib/ruby/1.8/i386-mingw32 extconf.rb
> > /home/batsman/ruby-mingw32/lib/ruby/1.8/i386-mingw32/rbconfig.rb:7: ruby
> > lib version (1.8.4) doesn't match executable version (1.8.5)
> > (RuntimeError)
> >         from /home/batsman/usr//lib/ruby/1.8/mkmf.rb:4:in `require'
> >         from /home/batsman/usr//lib/ruby/1.8/mkmf.rb:4
> >         from extconf.rb:1:in `require'
> >         from extconf.rb:1
> >
> > [use vim to edit rbconfig.rb and remove/comment the version check if the
> > native & cross-compiled ruby version differ]
> >
> > $ ruby -I ~/ruby-mingw32/lib/ruby/1.8/i386-mingw32/ extconf.rb
> > creating Makefile
> > $ make
> > i586-mingw32msvc-gcc -I.
> > -I/home/batsman/ruby-mingw32/lib/ruby/1.8/i386-mingw32
> > -I/home/batsman/ruby-mingw32/lib/ruby/1.8/i386-mingw32 -I.  -g -O2   -c
> > json_ext.c
> > i586-mingw32msvc-gcc -shared -s
> > -Wl,--enable-auto-import,--export-all  -L"/home/batsman/ruby-mingw32/lib" -o
> > json_ext.so json_ext.o  -lmsvcrt-ruby18  -lwsock32
> > $ file json_ext.so
> > json_ext.so: MS Windows PE 32-bit Intel 80386 console DLL
>
>
> Thanks for demoing this. I'll give it a shot.
>

It looks like the compile worked. I did not run make install on mingw.

There where a couple of issues with the install task, such as
rubyw.exemissing and the .ext directory missing.
To resolve this I copied ruby.exe to rubyw.exe and the ext directory to .ext

Thank you,
Brian

--
> > Mauricio Fernandez  -   http://eigenclass.org   -  singular Ruby
> >
> >
>

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