this is 4.0.3 FINAL (it hasn't been added to the bug system yet).

./configure --with-apache=/path/apache_1.3.12 --with-mysql --enable-ftp --enable-memory-limit --enable-track-vars

results:

x-empt@bluebox:~/php-4.0.3$ make
Making all in Zend
make[1]: Entering directory `/home/x-empt/php-4.0.3/Zend'
/bin/sh ../libtool --silent --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I..   -DXML_BYTE_ORDER=12  -g -O2 -c zend-scanner.c
In file included from /usr/include/bits/errno.h:25,
                 from /usr/include/errno.h:36,
                 from zend-scanner.c:2619:
/usr/include/linux/errno.h:4: asm/errno.h: No such file or directory
make[1]: *** [zend-scanner.lo] Error 1
make[1]: Leaving directory `/home/x-empt/php-4.0.3/Zend'
make: *** [all-recursive] Error 1