I've tried to compile using:
'./configure --with-mysql 
--with-apx=/usr/local/apache/bin/apxs'
and after typing 'make', it said:

microtime.c: In function `php_if_getrusage':
microtime.c:99: storage size of `usg' isn't known
microtime.c:102: `RUSAGE_SELF' undeclared (first use in 
this function)
microtime.c:102: (Each undeclared identifier is reported 
only once
microtime.c:102: for each function it appears in.)
microtime.c:108: `RUSAGE_CHILDREN' undeclared (first use 
in this function)