php_functions.c:93:27: missing binary operator

Hi All, Having big trouble trying to install php-4.2.1 on redhat 7.3 can anyone help please? (Apache-2.0.39, Openssl-0.9.6d, Mysql-4.0.1-alpha) Configure line reads: ./configure --prefix=/usr/local/php --with-openssl=/usr/local/openssl --wit h-config-file-path=/usr/local/php --with-apxs2=/usr/local/ap/bin/apxs --enab le-magic-quotes --enable-debugger The configure all seems to run fine, no error messages, then when I run make it gets part way through and comes back: make[1]: Leaving directory `/home/_s-store/php-4.2.1/ext' Making all in sapi make[1]: Entering directory `/home/_s-store/php-4.2.1/sapi' Making all in apache2filter make[2]: Entering directory `/home/_s-store/php-4.2.1/sapi/apache2filter' make[3]: Entering directory `/home/_s-store/php-4.2.1/sapi/apache2filter' /bin/sh /home/_s-store/php-4.2.1/libtool --silent --mode=compile gcc -I. -I/home/_s-store/php-4.2.1/sapi/apache2filter -I/home/_s-store/php- 4.2.1/main -I/home/_s-store/php-4.2.1 -I/usr/local/ap/include -I/home/_s-sto re/php-4.2.1/Zend -I/usr/local/openssl/include -I/home/_s-store/php-4.2.1/ex t/mysql/libmysql -I/home/_s-store/php-4.2.1/ext/xml/expat -D_REENTRANT -I/h ome/_s-store/php-4.2.1/TSRM -DTHREAD=1 -g -O2 -pthread -DZTS -prefer-pic -c php_functions.c php_functions.c:93:27: missing binary operator before '!' make[3]: *** [php_functions.lo] Error 1 make[3]: Leaving directory `/home/_s-store/php-4.2.1/sapi/apache2filter' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/home/_s-store/php-4.2.1/sapi/apache2filter' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/_s-store/php-4.2.1/sapi' make: *** [all-recursive] Error 1 Can anyone suggest what I should do? Thanks for any help Zac