You might find that you need to build a PECL extension statically into your
PHP binary. To do this, you'll need to place the extension source under
the php-src/ext/ directory and tell the PHP build
system to regenerate its configure script.
$ cd /your/phpsrcdir/ext
$ pecl download extname
$ gzip -d < extname.tgz | tar -xvf -
$ mv extname-x.x.x extname
/your/phpsrcdir/ext/extname
From here, force PHP to rebuild the configure script, and then build PHP as normal:
$ cd /your/phpsrcdir
$ rm configure
$ ./buildconf --force
$ ./configure --help
$ ./configure --with-extname --enable-someotherext --with-foobar
$ make
$ make install
$ ./configure --help | grep extname