[Rails] Gem install fails due to invalid option

Ruby on Rails Friday, September 27, 2013

Hi y'll,

On attempting to install rails on a windows7 system it fails with:

H:\>gem install rails

Building native extensions. This could take a while...

ERROR: Error installing rails:

ERROR: Failed to build gem native extension.

"H:/My Programs/Ruby200-x64/bin/ruby.exe" extconf.rb

H:/My Programs/Ruby200-x64/bin/ruby.exe: invalid option -P (-h will show valid

options) (RuntimeError)

Gem files will remain installed in H:/My Programs/Ruby200-x64/lib/ruby/gems/2.0.

0/gems/atomic-1.1.14 for inspection.

Results logged to H:/My Programs/Ruby200-x64/lib/ruby/gems/2.0.0/gems/atomic-1.1

.14/ext/gem_make.out

So why does the builder use an invalid option?

Ruby version:

H:\>ruby -v

ruby 2.0.0p247 (2013-06-27) [x64-mingw32]

Its propably something simple

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