From: Hugh Sasse Date: 2010-02-18T20:54:32+09:00 Subject: [ruby-core:28218] [Bug #2750] build fails on win32/MinGW: "executable host ruby is required." even when --with-baseruby is used Issue #2750 has been updated by Hugh Sasse. What happens if you change the command line, rather than the RUBYOPT line: ./configure --with-baseruby='c:\Programs\ruby-1.9\bin\ruby.exe' (I've never tried this, so don't know if it will work, it just seems to be in line with what Luis described, given yours didn't work.) HTH, Hugh ---------------------------------------- http://redmine.ruby-lang.org/issues/show/2750 ---------------------------------------- http://redmine.ruby-lang.org