-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

BWACJay wrote:
| I've spent two good(bad, actually) days on this already, and searched
| through all the archives and anywhere else that the Google might take
| me...
|
| I'm simply trying to install the rjb gem using "gem install rjb". I
| get this response:
| ------
| Building native extensions.  This could take a while...
| ERROR:  Error installing rjb:
| 	ERROR: Failed to build gem native extension.
|
| c:/ruby/bin/ruby.exe extconf.rb install rjb
| 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.
| ...
| ------
|
| I've seen posts about this exact problem, but none of the solutions
| work for me (or I'm not executing them correctly, but I've gone
| through them all at least 10 times so far).  The proposed solutions
| that I've seen are:
| 1) make sure path environment variable includes JDK root directory.
| My path variable includes the JDK root directory, the /bin directory,
| and the /include directory (I've tried each individually as well)
| 2) the JAVA_HOME environment variable not set.  My command "c:\>echo
| %JAVA_HOME%" returns "C:\j2sdk1.4.2_17"
| 3) copy the jni.h (and a few other) files to the rjb-1.1.3/ext folder,
| which I have done.
| 4) run a specific version of the install gem.  I've tried the default
| 'gem install rjb' as well as 'gem install -platform mswin32' (even
| tried 'gem install -platform ruby') and no progress.
|
| Here is some other helpful? info:
| OS = WinXP SP2
| Ruby = ruby 1.8.6 (2007-09-24 patchlevel 111) [i386-mswin32]
| Rails = Rails 2.0.2
| Java SDK = J2SE 1.4.2_17
| RJB = 1.1.3
|
| Any direction would be greatly appreciated.

Well, unless you have Visual C++ 6.0 installed, you won't be able to
compile C extensions.

One option would be to use the (highly experimental) Windows installer3
recipe, which downloads all you need to compile Ruby (including the
MinGW32 GCC compiler), compiles Ruby, and puts it into a sandbox, so
that you current installation doesn't get mixed up. With any luck, you
should be able to just do a 'gem install rjb' in the compiled Ruby's bin
directory, and the gem should install successfully.

A quick and dirty guide to getting the installer3 recipe:
<http://groups.google.com/group/comp.lang.ruby/browse_frm/thread/1e2f1b9a3d611e3b?tvc=1>

- --
Phillip Gawlowski
Twitter: twitter.com/cynicalryan
Blog: http://justarubyist.blogspot.com

Dulce bellum inexpertis.
(War is sweet to those who do not fight.)
~ -- Gerard Didier Erasmus (c. 1465-1536)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.8 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iEYEARECAAYFAkgZUN4ACgkQbtAgaoJTgL+uRACdFt8DTgejLvwH6a4pZJOovXFG
AWUAoJpDGBLfHbcetZ0QCJP+NqcdJG4W
=mpGg
-----END PGP SIGNATURE-----