Problem with building gem, require path

[Daniel Berger]

Hi all,

Windows XP
Ruby 1.8.2

I'm having a bit of trouble building a proper gem for one of the
Win32Utils packages (win32-ipc). This is a C extension. Everything
appears to be fine, except that it installs the shared library (.so)
under "lib", instead of "lib/win32". I've set the Gem#required_paths,
so I'm not sure what I'm doing wrong.

Here is the spec:

require "rubygems"

spec = Gem::Specification.new do |gem|
gem.name = "win32-ipc"
gem.version = "0.4.1"
gem.author = "Daniel J. Berger"
gem.email = "djbe...@gmail.com"
gem.homepage = "http://www.rubyforge.org/projects/win32utils"
gem.platform = Gem::Platform::WIN32
gem.summary = "A base class for Win32 synchronization objects."
gem.require_paths << "lib/win32"
gem.test_file = "test/tc_ipc.rb"
gem.has_rdoc = true
gem.extra_rdoc_files = ["CHANGES","README"]
gem.extensions = ["extconf.rb"]
gem.rubyforge_project = "win32utils"

files = Dir["doc/*"] + Dir["examples/*"] + Dir["lib/win32/*"]
files += Dir["test/*"] + Dir["[A-Z]*"]
files.delete_if{ |item| item.include?("CVS") }
gem.files = files
end

if $0 == __FILE__
Gem.manage_gems
Gem::Builder.new(spec).build
end

The result is ipc.so installed under
c:/ruby/lib/ruby/gems/1.8/gems/win32-ipc-0.4.1-mswin32/lib instead of
the desired
c:/ruby/lib/ruby/gems/1.8/gems/win32-ipc-0.4.1-mswin32/lib/win32.

Any ideas? I've tried a few things for 'required_libs' without
success.

Regards,

Dan

[Stefan Achatz]

Daniel Berger wrote:

> I'm having a bit of trouble building a proper gem for one of the
> Win32Utils packages (win32-ipc). This is a C extension. Everything
> appears to be fine, except that it installs the shared library (.so)
> under "lib", instead of "lib/win32". I've set the Gem#required_paths,
> so I'm not sure what I'm doing wrong.

> gem.require_paths << "lib/win32"

Hello,

i found that rubygems copies the libraries in the first require_path,
regardless which path stands in the mkmf create_makefile command. Thats
because installer.rb of rubygems overrides the RUBYARCHDIR and RUBYLIBDIR
variables of the resulting Makefile not considering the target_prefix.
I think its meant to require all files with the autorequire, so the actual
location of the library doesn't matter.
Try gem.require_paths = ['lib/win32','.'] or something to make sure your
desired path is in front or nevermind at all.
I mentioned the use of target_prefix in the Makefile on
Rubygems-developers-mailinglist, but nobody seems to notice.
Stefan