From: Benoit Daloze Date: 2010-05-09T00:26:31+09:00 Subject: [ruby-core:30106] Re: [Bug #3255] Trunk fail to build without explicit ./configure options (yaml.h not found) Hi, I tried again today, and it works without configuration, but I need to make # fail with 'libyaml missing' make clean make # OK Do anyone have an idea why I get these results? Regards, B.D. PS: Probably the precedant message's cause can be replaced by this one.