How does libtool decide to build a shared library or not?

How does libtool decide to build a shared library or no开发者_Go百科t?

Chenz

If you use Automake and Autoconf, then Libtool builds both shared and static by default if they are supported on your platform. To build only one kind, call configure with --disable-static or --disable-shared.

From http://www.manpagez.com/man/1/libtool/

Libtool can create either dynamically linked shared libraries, with -dynamic, or statically linked (archive) libraries, with -static.