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libserialport (sometimes abbreviated as "sp") is a minimal, cross-platform shared library written in C that is intended to take care of the OS-specific details when writing software that uses serial ports.

It is licensed under the terms of the GNU Lesser General Public License, version 3 or later.

Note: While libserialport is hosted on (and sigrok uses libserialport), this is a completely independent library that can be used by other projects as well. The libserialport library does not depend on any sigrok related libraries or projects.

Supported operating systems

  • Linux
  • Mac OS X
  • FreeBSD
  • Windows
  • Android

API documentation

You can browse the API documentation of the library online.

Distribution packages

See Downloads.

Getting the code

$ git clone git://

You can also browse the source code via gitweb.

Building from source

$ ./
$ ./configure
$ make
$ sudo make install

Note: There are no dependencies (i.e., no other libraries are needed to build/use libserialport).


To examine problems related to libserialport, verbose debug output can be enabled by setting the environment variable LIBSERIALPORT_DEBUG to any value.