Hi, Now, I'm rebuilding all of MacRuby latest. But, it seems that does not finish forever with following build log. ----snip---- ./miniruby -I. -I./lib bin/rubyc --internal --arch x86_64 -C "ext/ripper/lib/ripper/filter.rb" -o "ext/ripper/lib/ripper/filter.rbo" ./miniruby -I. -I./lib bin/rubyc --internal --arch x86_64 -C "ext/ripper/lib/ripper/lexer.rb" -o "ext/ripper/lib/ripper/lexer.rbo" ./miniruby -I. -I./lib bin/rubyc --internal --arch x86_64 -C "ext/ripper/lib/ripper/sexp.rb" -o "ext/ripper/lib/ripper/sexp.rbo" ./miniruby -I. -I./lib bin/rubyc --internal --arch x86_64 -C "ext/ripper/lib/ripper.rb" -o "ext/ripper/lib/ripper.rbo" cd ext/bigdecimal && ../../miniruby -I../.. -I../../lib -r rbconfig -e "RbConfig::CONFIG['libdir'] = '../..'; require './extconf.rb'" checking for labs() in stdlib.h... yes checking for llabs() in stdlib.h... yes creating Makefile ------------- Does it occur only in my environment? Thank you.