php extension problem

Hi ! I am having some trouble creating a php extension. as show in the documentation i did a ./ext_skel --extname=mymodule which created the directory mymodule i edited the config.m4 file to tune it to something very basic : PHP_ARG_WITH(mymodule, for mymodule support, [ --with-mymodule Include mymodule support]) if test "$PHP_MYMODULE" != "no"; then PHP_NEW_EXTENSION(mymodule, mymodule.c, $ext_shared) fi saved and went to the base of the source tree... pierre@debian:/usr/src/php4-4.3.9$ ./buildconf You should not run buildconf in a release package. use buildconf --force to override this check. pierre@debian:/usr/src/php4-4.3.9$ ./buildconf --force Forcing buildconf using default Zend directory buildconf: checking installation... buildconf: autoconf version 2.59 (ok) buildconf: Your version of autoconf likely contains buggy cache code. Running cvsclean for you. To avoid this, install autoconf-2.13 and automake-1.5. buildconf: libtool version 1.5.6 (ok) rebuilding configure autoconf/programs.m4:438: AC_DECL_YYTEXT is expanded from... configure.in:147: the top level pierre@debian:/usr/src/php4-4.3.9$ then, i been looking up if the module was taken pierre@debian:/usr/src/php4-4.3.9$ ./configure --help | grep -i mymodule pierre@debian:/usr/src/php4-4.3.9$ and.... no, it's not.... any idea ? something i did wrong ? thank you :)