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QUCS - Quite Universal Circuit Simulator

Qucs is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit. After that simulation has finished you can view the simulation results on a presentation page or window.

Resources

Currently Supported Platforms

  • GNU/Linux
  • Darwin/OS X
  • FreeBSD
  • Windows

Branching strategy for the Git repository

After release 0.0.18 the project started to use the Git flow strategy for branching http://nvie.com/posts/a-successful-git-branching-model/.

Under this strategy the following branches can be found in the repository:

  • master: contains the latest stable release.
  • develop: contains the latest developments or unstable. This should be the base branch of Pull-Requests or contributions.
  • release-x.y.z: are temporary branches being stabilized for a release. To be merged into master and removed.
  • [other branches]: are branches with a good reason to be in the main repository (ease collaboration, use CI facilities).

Source Download and Compilation

The source code is available as distribution tarballs and clones of the Git repository.

The distributed tarballs can be downloaded from: http://sourceforge.net/projects/qucs/files/qucs/. Compilation and install from tarball is expected to work as follows (see dependencies below):

tar xvfz qucs[version].tar.gz
cd qucs[version]
./configure
make install

All versions of the code may be accessed by cloning one of the Git repositories (the first is updated more frequently):

git clone git://github.com/Qucs/qucs.git
git clone git://git.code.sf.net/p/qucs/git

Packages such as, qucsator (simulator) and qucs-test (test suite) are provided as Git submodules. Some are needed for bootstrapping. To retrieve the submodules, you may either

  • clone submodules recursively:
    • git clone --recursive [repository]
  • or after cloning, do:
    • git submodule init
    • git submodule update

After an initial clone operation, the local copy is set by the default as the master branch. Branches can be listed and selected with the following commands:

git branch
git checkout [branch name]

Compilation and installation depends on the operation system. See below for an example.

Contributing to QUCS

Some general contribution guidelines can be found on our Wiki https://github.com/Qucs/qucs/wiki/Contribution.

More compile instructions on GNU/Linux

(This section may be outdated. Find up to date documentation in */README.md)

For the GUI tools and simulation engine the following packages are required when building from git (package names on non-Debian may vary).

 adms automake build-essential libqt4-dev libqt4-qt3support libtool libtool-bin
gperf flex bison pkg-config

To build the manuals and user documentation further dependencies are needed. Please check the qucs-doc/README file. See below the --disable-doc to skip building the documentation from source. To build the documentation from source the following packages are needed (package names on non-Debian may vary).

 doxygen latex2html octave octave-epstk ps2eps pgf python-tk
texlive-publishers texlive-science texlive texlive-font-utils
texlive-math-extra transfig gnuplot graphviz

Bootstrap, build, install everything (after cloning):

$ cd qucs
$ ./bootstrap
$ ./configure
$ make
$ sudo make install # optional

Compile Qucs GUI tools only:

$ cd qucs
$ [./bootstrap] #if not executed in the top level
$ ./configure
$ make

Compile qucs-core tools only:

$ cd qucs-core
$ [./bootstrap] #if not executed in the top level
$ ./configure
$ make

Compile qucs-doc documentation only:

$ cd qucs-doc
$ [./bootstrap] #if not executed in the top level
$ ./configure
$ make

Tests may be executed at the top level with:

$ make check

Note:

  • Qucs will be installed to /usr/local by default. You may override this by passing --prefix=[some location] to the ./configure script.

  • ADMS should be installed e.g. from a released tarball (>= 2.3.0). To use a different admsXml pass the option --with-admsxml=[path/to/]anotherAdmsXml to ./configure.

  • The LaTex documentation compilation in qucs-doc can be skipped passing --disable-doc to the top level configure script.

  • Consider INSTALL and the output of ./configure --help for more and definitive build options.

Binary Installation

Some of the platform specific pre-compile binary packages containing installers can be found at https://sourceforge.net/projects/qucs/files/qucs-binary/.

License

Qucs is under GNU General Public License, version 2.0+. See COPYING file.