Problem compiling on RedHat 6.2

I'm trying to install PHP4.0.3pl1 from a tarball. I configure with: configure --with-apxs When I compile I get the following error, can anyone help me, because I can't figure out what is wrong. I have installed glibc 2.1.3-15 + devel and perl ver 5+. Making all in Zend make[1]: Entering directory `/usr/src/working/php-4.0.3pl1/Zend' /bin/sh ../libtool --silent --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I.. -DEAPI -DXML_BYTE_ORDER=12 -g -O2 -c zend-scanner.c In file included from /usr/include/errno.h:36, from zend-scanner.c:2619: /usr/include/bits/errno.h:25: linux/errno.h: No such file or directory make[1]: *** [zend-scanner.lo] Error 1 make[1]: Leaving directory `/usr/src/working/php-4.0.3pl1/Zend' make: *** [all-recursive] Error 1 Thanks in advance Philip Grove