Issue #20687 has been updated by mame (Yusuke Endoh). Status changed from Open to Closed This issue happens only when ruby is installled but erb is not installed. 6ab591f80aa19d63ecd1e1df3c09c391efb318a6 checks if not only ruby but also erb is installed. So I think the issue itself is already resolved. Using miniruby for rebuilding encdb.h is a different issue. ---------------------------------------- Bug #20687: Does tarball require baseruby? https://bugs.ruby-lang.org/issues/20687#change-109597 * Author: hsbt (Hiroshi SHIBATA) * Status: Closed * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- From https://github.com/rbenv/ruby-build/issues/2435 I'm wondering why tarball use system ruby with above environment. In my understanding, tarball don't need baseruby. Is it intentional? -- https://bugs.ruby-lang.org/