Problems installing PHP 4.2.1

Couldn't get a compile under Red Hat Linux 7.2. I'm installing it as a dynamic Apache 2.0.39 module. I got the following error: Making all in sapi make[1]: Entering directory `/home/martin/php-4.2.1/sapi' Making all in apache2filter make[2]: Entering directory `/home/martin/php-4.2.1/sapi/apache2filter' make[3]: Entering directory `/home/martin/php-4.2.1/sapi/apache2filter' /bin/sh /home/martin/php-4.2.1/libtool --silent --mode=compile gcc -I. -I/home/martin/php-4.2.1/sapi/apache2filter -I/home/martin/php-4.2.1/main -I/home/martin/php-4.2.1 -I/usr/local/apache2/include -I/home/martin/php-4.2.1/Zend -I/usr/local//include -I/home/martin/php-4.2.1/ext/mysql/libmysql -I/home/martin/php-4.2.1/ext/xml/expat -D_REENTRANT -I/home/martin/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/martin/php-4.2.1/sapi/apache2filter' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/home/martin/php-4.2.1/sapi/apache2filter' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/martin/php-4.2.1/sapi' make: *** [all-recursive] Error 1 ... Any suggestion? Thanks in Advance