Forum: Ruby-core [Backport 200 - Backport #8130][Open] ArgumentError being thrown when using find_library

Issue #8130 has been reported by agarie (Carlos Agarie).

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Backport #8130: ArgumentError being thrown when using find_library
https://bugs.ruby-lang.org/issues/8130

Author: agarie (Carlos Agarie)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:


Hi,

I'm a contributor to SciRuby and I'm currently working on NMatrix, a 
numerical linear algebra library that uses LAPACK and ATLAS. I was 
compiling it with Ruby 2.0.0p0 installed through RVM and had a problem I 
didn't have when using 1.9.3:

/Users/carlosagarie/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/mkmf.rb:893:in 
`%': too many arguments for format string (ArgumentError)
  from 
/Users/carlosagarie/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/mkmf.rb:893:in 
`block in checking_for'
  from 
/Users/carlosagarie/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/mkmf.rb:337:in 
`block (2 levels) in postpone'
  from 
/Users/carlosagarie/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/mkmf.rb:307:in 
`open'
  from 
/Users/carlosagarie/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/mkmf.rb:337:in 
`block in postpone'
  from 
/Users/carlosagarie/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/mkmf.rb:307:in 
`open'
  from 
/Users/carlosagarie/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/mkmf.rb:333:in 
`postpone'
  from 
/Users/carlosagarie/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/mkmf.rb:891:in 
`checking_for'
  from 
/Users/carlosagarie/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/mkmf.rb:969:in 
`find_library'
  from ../../../../ext/nmatrix/extconf.rb:124:in `<main>'

The complete output can be found in this gist: 
https://gist.github.com/agarie/5202139#file-gistfile1-sh. And 
extconf.rb:124 contains the following:

find_library("lapack", "clapack_dgetrf", "/usr/local/lib", 
"/usr/local/atlas/lib")

I couldn't find a note on the 2.0 changelog about something that could 
have "broken" it.

I can get it working by commenting lines 893 and 896 of mkmf.rb, which 
are explicitly shown in this gist: 
https://gist.github.com/agarie/5202139#file-gistfile2-rb.

And this is the mkmf.log: 
https://gist.github.com/agarie/5202139#file-mkmf-log

Regarding ruby version:

$ ruby -v
ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-darwin11.4.2]

I also couldn't find a similar bug on the issue tracker or on Google. 
And to reproduce the error:

$ git clone git://github.com/SciRuby/nmatrix.git
$ cd nmatrix
$ bundle install
$ bundle exec rake compile

It might give other problems because of the libraries necessary for 
installation. I'm trying to come up with a simpler script that 
reproduces this error -- I'll update this ticket as soon as I'm 
successful.

Another thing is that when using 1.9.3-p392 and doing the same set of 
steps, it works correctly.

Thanks for your time.