I have two versions of PHP installed on the system, one in /opt/local (API=20090626) and another in /opt/php54 (API=20100525). I'm trying to compile an extension for the /opt/php54 version, so I run /opt/php54/bin/phpize in the extension directory, then ./configure --enable-<ext> && make && sudo make install. The problem though is that the compiled extension is not for API=20100525, but rather for API=20090626 (the one in /opt/local). Even when running make install, it tries to install it in /opt/local instead of /opt/php54.
What am I doing wrong?