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https://github.com/ra3xdh/qucs_s
Qucs-S is a circuit simulation program with Qt-based GUI
https://github.com/ra3xdh/qucs_s
circuit electronics modelling ngspice qt qt5 qt6 simulation xyce
Last synced: 7 days ago
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Qucs-S is a circuit simulation program with Qt-based GUI
- Host: GitHub
- URL: https://github.com/ra3xdh/qucs_s
- Owner: ra3xdh
- License: gpl-2.0
- Created: 2017-07-02T10:22:36.000Z (over 7 years ago)
- Default Branch: current
- Last Pushed: 2025-01-23T10:09:01.000Z (14 days ago)
- Last Synced: 2025-01-24T01:16:56.305Z (14 days ago)
- Topics: circuit, electronics, modelling, ngspice, qt, qt5, qt6, simulation, xyce
- Language: C++
- Homepage: https://ra3xdh.github.io/
- Size: 35.1 MB
- Stars: 919
- Watchers: 44
- Forks: 117
- Open Issues: 23
-
Metadata Files:
- Readme: README.md
- Changelog: ChangeLog
- Contributing: CONTRIBUTING.md
- Funding: .github/FUNDING.yml
- License: COPYING
- Authors: AUTHORS
Awesome Lists containing this project
- awesome-opensource-hardware - qucs_s
README
# Qucs-S: Quite universal circuit simulator with SPICE
[](https://boosty.to/qucs_s)
[](https://t.me/qucs_s)
[](https://ra3xdh.github.io/)
[](https://repology.org/project/qucs-s/versions)
## About Qucs-S
Qucs-S provides a fancy graphical user interface for a number of popular circuit simulation
engines. Qucs-S contains instruments for schematic capture, visualization and provides differents
passive and active components including device library. The following simulation kernels are supported:
* Ngspice (recommended)
* Xyce
* SpiceOpus
* Qucsator (non-spice)
See the https://ra3xdh.github.io/ for more details. Qucs-S is based
on original Qucs code: https://github.com/Qucs/qucs
## Donation
Qucs-S accepts donation using Boosty platform: https://boosty.to/qucs_s
## Build instructions
Use CMake to build Qucs-S. Install all necessary dependencies: GCC, Qt, Flex, Bison and SPICE
(optional). Install `ngspice` that is not needed for build, but serves as the simulation kernel.
### Dependencies
Qucs-S requires Qt6 libraries including QtCharts, CMake, flex, bison, gperf, and dos2unix as compile time
dependencies. Install these packages using the package manager of your distribution before compiling Qucs-S.
Ngspice is not required at compile time, but it is required as runtime dependency to run the simulation.
Here are some examples for the popular Linux distributions.
#### Ubuntu or Debian
~~~
sudo apt-get install ngspice build-essential git cmake flex bison gperf dos2unix
sudo apt-get install qt6-base-dev qt6-tools-dev qt6-tools-dev-tools libglx-dev linguist-qt6
sudo apt-get install qt6-l10n-tools libqt6svg6-dev libgl1-mesa-dev qt6-charts-dev libqt6opengl6-dev
~~~
#### Fedora
~~~
sudo dnf install gcc-c++ cmake git flex bison gperf dos2unix ngspice
sudo dnf install qt6-qtbase-devel cmake qt6-qtsvg-devel qt6-qttools-devel qt6-qtcharts-devel
~~~
### Compiling
After installing the dependecies, clone this git repository and execute in the top directory:
~~~
git submodule init
git submodule update
mkdir builddir
cd builddir
cmake .. -DCMAKE_INSTALL_PREFIX=/your_install_prefix/
make
make install
~~~
Since the v25.1.0 the Qucs-S will be configured with Qt6 by default. Substutute the `/your_install_prefix/`
as desired installation directory. Substitute any desire path (for example `$HOME/qucs-s`) here.
You may omit this option and installation steps. Default installation directory will be `/usr/local` if
`CMAKE_INSTALL_PREFIX` is not defined.
### Qt5/Qt6 support
Qt5 support has been dropped since v25.1.0. Only Qt6 libraries are supported. Set the `WITH_QT6=ON`
cmake flag if compiling the Qucs-S versions before v25.1.0
### Running
Then run `qucs-s` executable to launch the application:
~~~
cd /your_installation prefix/bin
./qucs-s
~~~
### clangd LSP support
Clangd looks for `compile_commands.json` file in parent folders of the file it processes.
`compile_commands.json` should be generated along with other build configuration files
when you run `cmake` as part of building routine:
```
mkdir builddir
cd builddir
cmake .. -DCMAKE_INSTALL_PREFIX=/your_install_prefix/
```
If `compile_commands.json` is already there, create a symbolic link to it from project root dir:
```
cd project_root
ln -s ./builddir/compile_commands.json compile_commands.json
```
It may take some time to index files at first run. Clangd configuration is in `.clangd` file.