error compiling php4 + apache

Using mandrake linux 7.1 , compiling apache 1.3.12, php 4.0.0 and mod_ssl , i get this error during the compalation of apache. -o httpd buildmark.o modules.o modules/auth_mysql/libauth_mysql.a modules/php4/libphp4.a modules/standard/libstandard.a modules/extra/libextra.a modules/proxy/libproxy.a main/libmain.a ./os/unix/libos.a ap/libap.a lib/expat-lite/libexpat.a -Wl,-rpath,/usr/mysql/lib/mysql -Wl,-rpath,/usr/lib/pgsql -rdynamic -L/usr/mysql/lib/mysql -L/usr/lib/pgsql -Lmodules/php4 -L../modules/php4 -L../../modules/php4 -lmodphp4 -lgdbm -ldl -lpq -lmysqlclient -lresolv -lm -ldl -lcrypt -lnsl -lresolv -L/usr/mysql/lib -lmysqlclient -lcrypt -lm -lcrypt -lndbm -ldlmodules/php4/libphp4.a(zend_operators.o): In function `is_numeric_string': /home/sweede/tarbals/apache-install/php-4.0.0/Zend/zend_operators.c:1468: undefined reference to `isfinite' collect2: ld returned 1 exit status make[2]: *** [target_static] Error 1 make[2]: Leaving directory `/home/sweede/tarbals/apache-install/apache_1.3.12/src' make[1]: *** [build-std] Error 2 make[1]: Leaving directory `/home/sweede/tarbals/apache-install/apache_1.3.12' make: *** [build] Error 2 [root@sepultura apache_1.3.12]# /home/sweede/tarbals/apache-install/php-4.0.0/Zend/zend_operators.c:1468: undefined reference to `isfinite' collect2: ld returned 1 exit status make[2]: *** [target_static] Error 1 I use a script to build the entire package (mysql, php, apache, mod_auth_mysql, openssl, mod_ssl, rsaref, frontpage) to replicate it among several servers that i control. Those servers are redhat, and compile perfectly.. i know mandrake has a habit of not installing all the proper packages for compiling programs, anyone have any ideas on whats missing??