Issue #5597 has been reported by Rainer Orth.

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Bug #5597: ruby build isn't completely VPATH friendly
http://redmine.ruby-lang.org/issues/5597

Author: Rainer Orth
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 1.9.2p290 (2011-07-09 revision 32553) [sparc-solaris2.10]


While a VPATH build of ruby 1.9.2-p290 on Solaris 10 basically worked fine, I got 
a couple of warnings that could (and should) be avoided:

During the doxygen step, I get

/vol/src/ruby/ruby-1.9.2-p290/ext/ripper/ripper.y:18: Warning: include file ruby/ruby.h not found, perhaps you forgot to add its directory to INCLUDE_PATH?

and several more similar warnings.  They can be avoided by pointing doxygen at the
source directory like this:

INCLUDE_PATH           = /vol/src/ruby/ruby-1.9.2-p290 /vol/src/ruby/ruby-1.9.2-p290/include



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