Compiling php (installed build directory)

Hi all, I'm just trying to figure out various configure options on php-5.1.1. When I "make install" I get the following files (among others): /usr/local/lib/php/build/shtool /usr/local/lib/php/build/config.guess /usr/local/lib/php/build/config.sub /usr/local/lib/php/build/phpize.m4 /usr/local/lib/php/build/mkdep.awk /usr/local/lib/php/build/scan_makefile_in.awk /usr/local/lib/php/build/libtool.m4 /usr/local/lib/php/build/Makefile.global /usr/local/lib/php/build/acinclude.m4 /usr/local/lib/php/build/ltmain.sh /usr/local/lib/php/build/run-tests.php but when I run the ./configure script as: ./configure --prefix=/usr/local --libdir=/usr/local/bogus-dir --disable-all --with-gnu-ld --quiet since bogus-dir doesn't exists, those files are not created... Shouldn't "make install" make a /usr/local/bogus-dir? And also, I'm quite interested why are those files needed anyway... thank you for your time, N::