compile error: structure has no member named `ap_auth_type'

I can't get PHP4 to compile on my machine. I am at my wits' end on this. I need to upgrade to PHP4 from 3.0.18 for a particular application I would like to run. If anyone has any ideas on what I might try, I would be most grateful for any input. I've tried compiling with every version of PHP4 I can get my hands on. php-3.0.18 compiles fine this way. Everything works, php serves postgresql database stuff wonderfully. I'm doing all this as root, so there's not a permissions error anywhere. With every version of PHP4 I've tried, I get the same error. OS: Red Hat Linux release 5.1 (Manhattan) Kernel 2.0.39 on an i586 Output of ldconfig -p can be found at: http://www.jfku.edu/~mhunter/ldconfig.txt Contents of /etc/ld.so.conf can be found at: http://www.jfku.edu/~mhunter/ldsoconf.txt PostgreSQL version: postgresql-7.1.2 configure command: ./configure --without-mysql --with-apache=../apache_1.2b8 --enable-track-vars --with-pgsql >& configure.out & make command: make >& make.out Here is the error output from make for php 4.0.6 . make[3]: Entering directory `/home/mhunter/gzips/php-4.0.6/sapi/apache' gcc -I. -I/home/mhunter/gzips/php-4.0.6/sapi/apache -I/home/mhunter/gzips/php-4.0.6/main -I/home/mhunter/gzips/php-4.0.6 -I/home/mhunter/gzips/apache_1.2b8/src-I/home/mhunter/gzips/php-4.0.6/Zend -I/home/mhunter/gzips/php-4.0.6/ext/xml/expat/xmltok -I/home/mhunter/gzips/php-4.0.6/ext/xml/expat/xmlparse -I/home/mhunter/gzips/php-4.0.6/TSRM -I/home/mhunter/gzips/apache_1.2b8/src -DSUPPORT_UTF8 -DXML_BYTE_ORDER=12 -g -O2 -c mod_php4.c && touch mod_php4.lo mod_php4.c: In function `sapi_apache_flush': mod_php4.c:142: warning: dereferencing `void *' pointer mod_php4.c:142: request for member `connection' in something not a structure orunion mod_php4.c: In function `init_request_info': mod_php4.c:406: structure has no member named `ap_auth_type' make[3]: *** [mod_php4.lo] Error 1 make[3]: Leaving directory `/home/mhunter/gzips/php-4.0.6/sapi/apache' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/home/mhunter/gzips/php-4.0.6/sapi/apache' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/mhunter/gzips/php-4.0.6/sapi' make: *** [all-recursive] Error 1 -- Mary