Installing PHP from source and no php.ini

I have installed php-5.3 from source on a VM containing Ubuntu 14.04. The build commands are ./configure --enable-fpm --with-curl --with-pdo-mysql=/path/to/mysql --withgd --with-jpeg-dir --with-png-dir make make test sudo make install While make test fails on some tests, the output of make install is Installing PHP SAPI module: cgi Installing PHP CGI binary: /usr/local/bin/ Installing PHP CLI binary: /usr/local/bin/ Installing PHP CLI man page: /usr/local/man/man1/ Installing build environment: /usr/local/lib/php/build/ Installing header files: /usr/local/include/php/ Installing helper programs: /usr/local/bin/ program: phpize program: php-config Installing man pages: /usr/local/man/man1/ page: phpize.1 page: php-config.1 Installing PEAR environment: /usr/local/lib/php/ [PEAR] Archive_Tar - already installed: 1.3.12 [PEAR] Console_Getopt - already installed: 1.3.1 [PEAR] Structures_Graph- already installed: 1.0.4 [PEAR] XML_Util - already installed: 1.2.3 [PEAR] PEAR - already installed: 1.9.5 Wrote PEAR system config file at: /usr/local/etc/pear.conf You may want to add: /usr/local/lib/php to your php.ini include_path Problem is that I don't see any php.ini in anywhere, e.g. /. What does the last sentence mean? You may want to add: /usr/local/lib/php to your php.ini include_path Actually /usr/local/lib/php is a directory. Regards, Mahmood