From: Caleb Powell <caleb.powell@...>
Date: 2008-07-23T21:46:49+09:00
Subject: Re: Using Antwrap in Ruby

Hi Srinivasa,

there are two distribution of Antwrap:

- This first one is for C based Ruby interpreter (MRI). It has a
dependency on RJB (RubyJavaBridge), a gem that enables
you to load and instantiate Java Classes from within a ruby process.
Antwrap needs this to load and execute Ant tasks.

- The second distro is meant to run on JRuby, and thus has no no
dependency on RJB  because it can load Java classes via the
interpreter.

When you install Antwrap, it will ask you to choose the distribution
with the choice of Ruby or Java. You have chosen the first option, and
the failure is occurring during the installation
of RJB. It is trying to compile it's classes using the gcc, but it is
having problems resolving the location of your JAVA_HOME (RJB needs to
link to some C libraries in the JVM).
This problem is probably due to the Cygwin paths.  Try putting this
into your .bashrc or .bash_profile file:

export JAVA_HOME=$(cygpath -ua $JAVA_HOME)
export PATH=$JAVA_HOME/bin:$PATH

There are some other suggestions on how to solve this here:

http://arton.no-ip.info/collabo/backyard/?HowToBuildRjb

Let me know how this goes for you.

On Wed, Jul 23, 2008 at 7:55 AM, Srinivasa Rao
<srinivasa_rao3@mindtree.com> wrote:
> Hi ,
>
> I am trying to install Antwrap-0.7.0.gem and rjb-1.1.x gems in cygwin
> and windows also  , I'm stuck so I thought I ping out to see if anyone
> else has done
> this. Last one week i have been working on issue .Any help would be
> appreciated.
>
> Error states that  in this below manner.
> --------------------------------------------------------
> $ gem install Antwrap-0.7.0.gem
> ERROR:  http://gems.rubyforge.org/ does not appear to be a repository
> Building native extensions.  This could take a while...
> ERROR:  Error installing Antwrap-0.7.0.gem:
>        ERROR: Failed to build gem native extension.
>
> /usr/bin/ruby.exe extconf.rb install Antwrap-0.7.0.gem
> checking for jni.h... no
> *** extconf.rb failed ***
> Could not create Makefile due to some reason, probably lack of
> necessary libraries and/or headers.  Check the mkmf.log file for more
> details.  You may need configuration options.
>
> Provided configuration options:
>        --with-opt-dir
>        --without-opt-dir
>        --with-opt-include
>        --without-opt-include=${opt-dir}/include
>        --with-opt-lib
>        --without-opt-lib=${opt-dir}/lib
>        --with-make-prog
>        --without-make-prog
>        --srcdir=.
>        --curdir
>        --ruby=/usr/bin/ruby
>
>
> Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/rjb-1.1.3
> for ins
> pection.
> Results logged to /usr/lib/ruby/gems/1.8/gems/rjb-1.1.3/ext/gem_make.out
>
>
>
> Here's the ext/mkmf.log file
>
>
> have_header: checking for jni.h... -------------------- no
>
> "gcc -E -I. -I/usr/lib/ruby/1.8/i386-cygwin -I. -IC:\Program
> Files\Java\jdk1.5.0_11/include -IC:\Program
> Files\Java\jdk1.5.0_11/include/win32    -g -O2    -IC:\Program
> Files\Java\jdk1.5.0_11/include -IC:\Program
> Files\Java\jdk1.5.0_11/include/win32  conftest.c -o conftest.i"
> gcc: FilesJavajdk1.5.0_11/include: No such file or directory
> gcc: FilesJavajdk1.5.0_11/include/win32: No such file or directory
> gcc: FilesJavajdk1.5.0_11/include: No such file or directory
> gcc: FilesJavajdk1.5.0_11/include/win32: No such file or directory
> In file included from conftest.c:1:
> /usr/lib/ruby/1.8/i386-cygwin/jni.h:27:20: jni_md.h: No such file or
> directory
> checked program was:
> /* begin */
> 1: #include <jni.h>
> /* end */
>
>
>
> Regards,
> M.SrinivasaRao.
> --
> Posted via http://www.ruby-forum.com/.
>
>



-- 
Caleb

"I do not know which makes a man more conservative—to know nothing but
the present, or nothing but the past."
 - John Maynard Keynes