Issue #8315 has been reported by Hanmac (Hans Mackowiak). ---------------------------------------- Bug #8315: mkmf does not include include paths from pkg_config anymore https://bugs.ruby-lang.org/issues/8315 Author: Hanmac (Hans Mackowiak) Status: Open Priority: Normal Assignee: iwamatsu (Nobuhiro Iwamatsu) Category: ext Target version: ruby -v: trunk Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN =begin ((*#6504*)) does that, for cpp files $CFLAGS is not used anymore, so the problems are the include paths: * there is no $CXXFLAGS global variable defined * pkg_config does not add the includes paths to the correct *FLAGS so my gems are currently broken for ruby trunk and if i fix that it may be broken for the older ruby =end -- http://bugs.ruby-lang.org/