make error

crotime.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 `/usr/local/php-4.0.4/ext/standard' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/usr/local/php-4.0.4/ext/standard' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/usr/local/php-4.0.4/ext' make: *** [all-recursive] Error 1 Commad I used to ./configure was ./configure --with-mysql --with-apache=../apache_1.3.14 --enable-track-vars I have mysql installed to /usr/local/mysql Could someone please help me to fix this error, its php-4.0.4 / apache_1.3.14 / mysql-3.23.30-gamma on Linux RedHat 6.1 Kernel-2.3.50 Thanks Regards Chris Kay