[ruby-core:51143] [Backport93 - Backport #7172][Assigned] [[Ruby 1.9:]] fix rbconfig for --enable-load-relative (v2)

Issue #7172 has been updated by usa (Usaku NAKAMURA).

Status changed from Open to Assigned
Assignee set to usa (Usaku NAKAMURA)

maybe next release.
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Backport #7172: [[Ruby 1.9:]] fix rbconfig for --enable-load-relative (v2)
https://bugs.ruby-lang.org/issues/7172#change-35084

Author: mpapis (Michal Papis)
Status: Assigned
Priority: Normal
Assignee: usa (Usaku NAKAMURA)
Category: 
Target version: 


continuation of http://bugs.ruby-lang.org/issues/6903 and http://bugs.ruby-lang.org/issues/7115

Checked with http://bugs.ruby-lang.org/projects/ruby-193/repository/entry/tool/mkconfig.rb and p286, 
there is still missing fix for rbconfig, it can be found here:

https://github.com/wayneeseguin/rvm/blob/master/patches/ruby/1.9.3/p286/ruby-multilib.patch

it does two things important for movable rubies:

1. https://github.com/wayneeseguin/rvm/blob/master/patches/ruby/1.9.3/p286/ruby-multilib.patch#L27-28 - properly detect libruby prefix on system with `lib64`
2. https://github.com/wayneeseguin/rvm/blob/master/patches/ruby/1.9.3/p286/ruby-multilib.patch#L36 - replace all occurrences of application prefix with `$(prefix)` so after moving ruby to other location final system paths are used instead of the build system paths, this solves number of issues, especially with compilation gem native extensions.



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