trouble installing memprof for profiling a legacy ree app

[letronje]

I'm getting the following while trying to install memprof gem

Installing gem memprof-0.3.10
/home/divya/.rvm/gems/ree-1.8.7-2012.02/gems/memprof-0.3.10/.gitignore
....
....
/home/divya/.rvm/gems/ree-1.8.7-2012.02/gems/memprof-0.3.10/spec/tracing_spec.rb
Building native extensions.  This could take a while...
ERROR:  Error installing memprof:
    ERROR: Failed to build gem native extension.

        /home/divya/.rvm/rubies/ree-1.8.7-2012.02/bin/ruby extconf.rb
(I'm about to compile yajl.. this will definitely take a while)
  -- tar zxvf yajl-1.0.9.tar.gz
  -- sed -i -e 's,yajl,json,g' *.h *.c api/*.h
  -- /home/divya/.rvm/rubies/ree-1.8.7-2012.02/bin/ruby extconf.rb
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/home/divya/.rvm/rubies/ree-1.8.7-2012.02/bin/ruby
extconf.rb:17:in `sys': /home/divya/.rvm/rubies/ree-1.8.7-2012.02/bin/ruby extconf.rb failed, please report to memprof@tmm1.net with pastie.org link to /home/divya/.rvm/gems/ree-1.8.7-2012.02/gems/memprof-0.3.10/ext/mkmf.log (RuntimeError)
    from extconf.rb:50
    from extconf.rb:35:in `chdir'
    from extconf.rb:35
    from extconf.rb:31:in `chdir'
    from extconf.rb:31


Gem files will remain installed in /home/divya/.rvm/gems/ree-1.8.7-2012.02/gems/memprof-0.3.10 for inspection.
Results logged to /home/divya/.rvm/gems/ree-1.8.7-2012.02/gems/memprof-0.3.10/ext/gem_make.out

I don't see '/home/divya/.rvm/gems/ree-1.8.7-2012.02/gems/memprof-0.3.10/ext/mkmf.log' file.

'/home/divya/.rvm/gems/ree-1.8.7-2012.02/gems/memprof-0.3.10/ext/src/mkmf.log' ends with the following 2 lines after yajl gets extracted.

"sed -i -e 's,yajl,json,g' *.h *.c api/*.h"
"/home/divya/.rvm/rubies/ree-1.8.7-2012.02/bin/ruby extconf.rb"
/home/divya/.rvm/rubies/ree-1.8.7-2012.02/bin/ruby: no such file to load -- ./siteconf20140529-5820-s957to-0.rb (LoadError)

The file siteconf20140529-5820-s957to-0.rb is present in '/home/divya/.rvm/gems/ree-1.8.7-2012.02/gems/memprof-0.3.10/ext'

If i goto '/home/divya/.rvm/gems/ree-1.8.7-2012.02/gems/memprof-0.3.10/ext/src/yajl-1.0.9/src' and run ruby extconf.rb , it generates the Makefile and make runs properly and yajl is built

[tmm1]

Strange, it seems siteconf20140529-5820-s957to-0 is leaking into your environment somehow, probably into RUBYOPT