Problem Installing pdflib

I have been having troubles getting pdflib 4.0.1 to install with php 4.0.5 and redhat 7.0. Everything appears to be working until I get part way through making php. Then I get these errors: pdf.c: In function `php_if_pdf_close_pdi_page': pdf.c:2704: too many arguments to function `PDF_close_pdi_page' make[3]: *** [pdf.lo] Error 1 make[3]: Leaving directory `/home/ken/php-4.0.5/ext/pdf' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/home/ken/php-4.0.5/ext/pdf' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/ken/php-4.0.5/ext' make: *** [all-recursive] Error 1 I am using the following config script. ./configure --with-apxs=/usr/sbin/apxs --with-mysql --with-gd --with-jpeg --with-ttf --with-pdflib --with-png-dir=/usr/lib --with-tiff-dir=/usr/lib --with-jpeg-dir=/usr/lib --with-imap --enable-track-vars --with-jpeg-dir=/usr/lib/ Does anyone have any thoughts as to what this might be? Thanks Ken