Compiling PHP as static mod

When I try to compile php as a static module in php I get errors that the mod_php4.c cannot find the header file. Here is my php configuration: ./configure --build=i386-redhat-linux-gnu --prefix=/usr/local/php --with-apache=/usr/local/apache --with-sybase-ct=/sybase --with-mysql=/usr --enable-exif --with-gd --with-jpeg-dir=/usr/lib --with-png-dir=/usr/local/lib --with-zlib --with-config-file-path=/etc --with-freetype-dir=/usr/local/lib --with-regex=system --enable-xml --enable-dbx --enable-bcmath --enable-calendar --enable-magic-quotes --enable-inline-optimization --enable-trans-sid --oldincludedir=/usr/include --libdir=/usr/lib Here is my apache configuration: ./configure --prefix=/usr/local/apache --activate-module=src/modules/php4/libphp4.a Basically, apache cannot find PHP's header files. Any help would be much appreciated. Thank you, RAY HUNTER