Does anyone have any pointers for building ruby with gcov?  I see that
Yusuke has done it before:

  http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-dev/33258

But I am having problems.  I run configure like this:

  $ CFLAGS='-fprofile-arcs -ftest-coverage' LIBS=-lgcov ./configure

Everything seems to build OK until bigdecimal.  mkmf complains saying it
couldn't build an executable.  Here is the output from my mkmf.log:

  http://pastie.org/679430

I'm not sure why this error would crop up with those CFLAGS and LIBS
though.  Any help would be appreciated.  Thanks!

-- 
Aaron Patterson
http://tenderlovemaking.com/