Issue #7698 has been updated by zzak (Zachary Scott).


I can still reproduce this on RubyGems 2.0.3 with trunk:
ruby 2.1.0dev (2013-06-16 trunk 41328) [x86_64-darwin12.3.0]

To repro: `gem install rbtree`

Is this a bug in rbtree?
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Bug #7698: RubyGems 2.0 has an incompatibility about installation of extension libraries
https://bugs.ruby-lang.org/issues/7698#change-39963

Author: mrkn (Kenta Murata)
Status: Closed
Priority: High
Assignee: nobu (Nobuyoshi Nakada)
Category: lib
Target version: current: 2.1.0
ruby -v: ruby 2.0.0dev (2013-01-14 trunk 38812) [x86_64-linux]
Backport: 


The current rubygem included in ruby-head has an incompatibility about installation of extension libraries.
This incompatibility makes `make install` to be failed because the current gem doesn't separate build, source and install directories.

This is reported as a bug of bigdecimal's gemspec in #7344 firstly, but Tadashi Saito pointed out it also can be reproduced in other gems including extension libraries, such as decimal.gem.
I think this incompatibility will make gem-developers to be in trouble after ruby-2.0 is released.
So this should be resolved before ruby-2.0 is released.



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