r2220でコンパイルに失敗
cd ext/digest/rmd160 ../../../miniruby -I../../.. -I../../../lib -r rbconfig -e "RbConfig::CONFIG['libdir'] = '../../..'; require './extconf.rb'" checking for main() in -lcrypto... The complier failed to generate an executable file. You have to install development tools first. (RuntimeError) rake aborted! Command failed with status (1): [../../../miniruby -I../../.. -I../../../li...] (See full trace by running task with --trace)
原因はなんだろ。あとで見てみよう。