here is the start of the last fil eis compiles, or tries to:
gcc  -I. -I/tmp/php-4.0.3pl1/ext/standard -I/tmp/php-4.0.3pl1 -I/tmp/php-4.0.3pl1/main -I/tmp/apache_1.3.11/src/include -I/tmp/apache_1.3.11/src/os/unix -I/tmp/php-4.0.3pl1/Zend -I/tmp/php-4.0.3pl1 -I/tmp/php-4.0.3pl1/ext/xml/expat/xmltok -I/tmp/php-4.0.3pl1/ext/xml/expat/xmlparse -I/tmp/php-4.0.3pl1/TSRM  -DXML_BYTE_ORDER=12 -g -O2  -c microtime.c && touch microtime.lo
microtime.c: In function `php_if_getrusage':
microtime.c:97: storage size of `usg' isn't known
microtime.c:100: `RUSAGE_SELF' undeclared (first use in this function)
microtime.c:100: (Each undeclared identifier is reported only once
microtime.c:100: for each function it appears in.)
microtime.c:106: `RUSAGE_CHILDREN' undeclared (first use in this function)
make[3]: *** [microtime.lo] Error 1
make[3]: Leaving directory `/tmp/php-4.0.3pl1/ext/standard'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/tmp/php-4.0.3pl1/ext/standard'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/tmp/php-4.0.3pl1/ext'
make: *** [all-recursive] Error 1

I provoked this from './configure --with-pgsql --without-mysql --with-pdflib --with-apache=/tmp/apache_1.3.1
1 --enable-shared --enable-track-vars --enable-trans-sid'
if this is not a bug, I am very sorry for have wasted your time