Problems installing PHP with Apache

Hi! I'm trying to install apache with PHP under linux, but I'm having some trouble... I've tried to install it on two machines, with 3 versions of PHP (4.03, 4.0.5, 4.0.6), and 3 versions of apache web server. I always get the same errors. ==== in the Apache source dir: /configure in the PHP dir: /configure --with-mysql --with-apache=../apache_1.3.19 --enable-track-vars --enable-sockets make ; make install back in the Apache dir: /configure --prefix=/usr/local/apache --enable-module=rewrite --activate-modulesrc/modules/libphp4.a make =============== There are header files it cannot find: ------------------- mod_php4.c:28:18: zend.h: No such file or directory mod_php4.c:29:17: php.h: No such file or directory mod_php4.c:30:27: php_variables.h: No such file or directory mod_php4.c:47:21: php_ini.h: No such file or directory mod_php4.c:48:25: php_globals.h: No such file or directory mod_php4.c:49:18: SAPI.h: No such file or directory mod_php4.c:50:22: php_main.h: No such file or directory mod_php4.c:52:26: zend_compile.h: No such file or directory mod_php4.c:53:26: zend_execute.h: No such file or directory mod_php4.c:54:28: zend_highlight.h: No such file or directory mod_php4.c:55:25: zend_indent.h: No such file or directory mod_php4.c:57:39: ext/standard/php_standard.h: No such file or directory make[4]: *** [mod_php4.o] Error 1 make[3]: *** [all] Error 1 make[2]: *** [subdirs] Error 1 make[2]: Leaving directory `/tmp/apache_1.3.19/src' make[1]: *** [build-std] Error 2 make[1]: Leaving directory `/tmp/apache_1.3.19' make: *** [build] Error 2 -------------------------------- Does anyone know why this happens? Cheers, Olav