imlib2 problems

ok, had a look through the archives but couldn't find anything, so I'm sorry if I'm asking questions answered long ago. basically i'm trying to install imlib2 as a module for php rather than compiled into it as that was giving errors. when I run phpize, I get this: root@snipe:/home/gaz/imlib# phpize aclocal: macro `AC_ADD_LIBPATH' defined in acinclude.m4 but never used aclocal: macro `AC_ADD_LIBRARY_WITH_PATH' defined in acinclude.m4 but never used aclocal: macro `AC_ADD_LIBRARY' defined in acinclude.m4 but never used aclocal: macro `AC_ADD_INCLUDE' defined in acinclude.m4 but never used autoheader: config.h.in is unchanged You should update your `aclocal.m4' by running aclocal. so then I run aclocal which gives me basically the same: root@snipe:/home/gaz/imlib# aclocal aclocal: macro `AC_ADD_LIBPATH' defined in acinclude.m4 but never used aclocal: macro `AC_ADD_LIBRARY_WITH_PATH' defined in acinclude.m4 but never used aclocal: macro `AC_ADD_LIBRARY' defined in acinclude.m4 but never used aclocal: macro `AC_ADD_INCLUDE' defined in acinclude.m4 but never used Now it will actually let me ./configure --with-imlib=shared;make;make install; but whenever I try to use the module I get the following: warning: invalid library (maybe not a PHP library) 'imlib.so' in /home/gaz/public_html/upload.php on line 6 which suggests to me that although make worked, it didn't work right because of this aclocal stuff. anybody any ideas on how to fix this? btw, this is on a i386 slackware 8.0 box, automake 1.4, autoconf 2.5 (as i'm thinking it could be down to one of these atm)