compile errors on RH 7.2 when making a RPM

Hi. I am trying to make an rpm out of my php-4.0.6.tar.gz file. Here is my problem: I unpack the sourc into /usr/share/redhat/SOURCES and copy the tar.gz file into there. I edit the php4.spec.in file and move it to /usr/share/redhat/SPECS/php4.spec when I issue rpm -ba SPECS/php4.spec it goes through the configure and then halts with this error: Configuring SAPI modules checking for AOLserver support... no checking for Apache module support via DSO through APXS... Sorry, I was not able to successfully run APXS. Possible reasons: 1. Perl is not installed; 2. Apache was not compiled with DSO support (--enable-module=so); 3. 'apxs' is not in your path. configure: error: ; error: Bad exit status from /var/tmp/rpm-tmp.50883 (%build) httpd is the stock rpm from redhat and has mod_so.c compiled in. The strange thing is, when I just ./configure --my_options.... it builds just fine w/o any errors and installs just right. I am pretty new to compiling source and making RPMS so any help would be appreciated. Thanks! Jeff