rake-compiler provides the building blocks to create binary gems from
Linux or OSX.
Examples of usage generating “fat-binaries” supporting both 1.8 and
1.9 are in sqlite3-ruby and nokogiri build and uses libxml, which may
serve as guidance.
You can also point the developer to RubyInstaller group:
if you are using cygwin you can probably find those libraries in the
setup
program.
I was able to install rails by installing most of the above libraries in
the
cygwin setup program.
Good luck!
Daniel
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