php-cvs buildconf,error

Hi all: I got errors while run buildconf at php-cvs source directory OS:Linux RedHat 6.0 kernel 2.2.5-15 [root@www tmp]# cvs -d :pserver:cvsread@cvs.php.net:/repository login [root@www tmp]#cvs -d :pserver:cvsread@cvs.php.net:/repository co php4 [root@www tmp]#cd php4 [root@www tmp]#cvs -d :pserver:cvsread@cvs.zend.com:/repository login [root@www tmp]#cvs -d :pserver:cvsread@cvs.zend.com:/repository co Zend TSRM [root@www tmp]# cd php4 [root@www php4]# ./buildconf buildconf: checking installation... buildconf: autoconf version 2.52 (ok) buildconf: automake version 1.4-p5 (ok) buildconf: libtool version 1.4 (ok) rebuilding Makefile templates automake: configure.in: installing `Zend/ylwrap' rebuilding configure ./aclocal.m4:929: error: m4_defn: undefined macro: _m4_divert_diversion ./aclocal.m4:472: PHP_SUBST is expanded from... ./aclocal.m4:929: the top level rebuilding acconfig.h rebuilding main/php_config.h.in ./aclocal.m4:929: error: m4_defn: undefined macro: _m4_divert_diversion ./aclocal.m4:472: PHP_SUBST is expanded from... ./aclocal.m4:929: the top level autoconf: tracing failed