I configured Emacs pretest 24.2.92 using: ./configure --with-wide-int --enable-link-time-optimization --enable-gcc-warnings Then I: make After that: See attachment. I'm using Ubuntu 12.10 to build Emacs 24.2.92. -- Best regards, Xue Fuqiao. http://www.emacswiki.org/emacs/XueFuqiao