Installing Gnucap

There are multiple ways to get Gnucap running. To use the latest features, it is best to install Gnucap from source. Building Gnucap is best on a Linux operating system such as Debian or Ubuntu. To build Gnucap on ohter operataing systems see the last section of this chapter.


To build Gnucap from source you need to install a number of buildtools:

  • g++

  • the readline library or debian package libreadline-dev

  • auto tools

  • ...

Building Gnucap on Linux

You can download gnucap from the Gnu savannah repo:

git clone git://


git clone

This will give you the basic gnucap directory structure:

├── apps
├── include
├── lib
├── main
├── modelgen
└── tests

Next, you need to move a recent tag or branch of the project. You can do this with:

git checkout -b ....

The project includes a gnucap shared library, some executables and a number of plugins.

To build of these, you can run the default build commands:


It might be necessary to reload the shared libraries with:


Other operating systems

To build gnucap on MacOS, a good reference is the gnucap build recipe

Run gnucap

After a successfull build and installation, you should be able to run gnucap like this:

~$ gnucap
Gnucap : The Gnu Circuit Analysis Package
Never trust any version less than 1.0
Copyright 1982-2013, Albert Davis
This is free software, and you are welcome
to redistribute it under the terms of
the GNU General Public License, version 3 or later.
See the file "COPYING" for details.
main version: master 2017.10.03
core-lib version: master 2017.10.03
default plugins: master 2017.10.03