Building Emacs from trunk r115447, I get several errors and warnings about undefined functions/macros in the cl- namespace. See build output attached. For example, byte-compiling "ffap.el" fails with: In toplevel form: ../../trunk/lisp/ffap.el:108:1:Error: Symbol's function definition is void: cl-member Makefile:272: recipe for target `ffap.elc' failed make[2]: *** [ffap.elc] Error 1 The build runs to completion but the resulting Emacs has problems. For example, from "runemacs -Q", "M-x ffap RET" fails with: Symbol's function definition is void: cl-member There might be a problem with my build environment. I haven't tried to build Emacs for quite a while. In GNU Emacs 24.3.50.1 (i686-pc-mingw32) of 2013-12-10 on 57172UHB Bzr revision: 115447 dmantipov@yandex.ru-20131210033636-vb02ptzqwu00b0bc Windowing system distributor `Microsoft Corp.', version 6.1.7601 Configured using: `configure --prefix c:/emacs/emacs-115447 --enable-locallisppath=%emacs_dir%/../site-lisp 'CPPFLAGS=-I G:/usr/include -I C:/GnuWin32/include' 'LDFLAGS=-L G:/usr/lib -L C:/GnuWin32/lib'' Important settings: value of $LANG: ENG locale-coding-system: cp1252 default enable-multibyte-characters: t Major mode: Lisp Interaction Minor modes in effect: tooltip-mode: t electric-indent-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t transient-mark-mode: t Recent input: M-x f f a p M-x r - e - b Recent messages: For information about GNU Emacs and the GNU system, type C-h C-a. if: Symbol's function definition is void: cl-member Eager macro-expansion failure: (void-function cl-sublis) [2 times] Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message format-spec rfc822 mml easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev easy-mmode nnheader gmm-utils mailheader sendmail derived eieio-core gnus-util rmail dframe rfc2047 rfc2045 ietf-drums mail-utils mm-util mail-prsvr cl cl-macs pcase cl-lib gv password-cache url-vars time-date tooltip electric uniquify ediff-hook vc-hooks lisp-float-type mwheel dos-w32 ls-lisp w32-common-fns disp-table w32-win w32-vars tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment lisp-mode prog-mode register page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer nadvice loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process w32notify w32 multi-tty emacs)