extmk.rb: improve message printed when configuring extensions fails
Point to the mkmf.log if configuring an extension fails so that people can find and fix the culprit easily. [ruby-core:80131] [Feature #13302]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58404 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
extmk.rb: improve message printed when configuring extensions fails
Point to the mkmf.log if configuring an extension fails so that people
can find and fix the culprit easily. [ruby-core:80131] [Feature #13302]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58404 b2dd03c8-39d4-4d8f-98ff-823fe69b080e