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# Building and installation
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You are generally recommended to use your distro's package manager to install
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Notcurses; it is [available](https://repology.org/project/notcurses/versions)
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prepackaged on many distributions. Otherwise, acquire the current source via
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`git clone https://github.com/dankamongmen/notcurses.git`
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## Prerequisites
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### APT
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Install build dependencies:
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`apt-get install build-essential cmake doctest-dev zlib1g-dev libavformat-dev libavutil-dev libgpm-dev libncurses-dev libreadline-dev libqrcodegen-dev libswscale-dev libunistring-dev pandoc pkg-config`
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If you only intend to build core Notcurses (without multimedia support), you
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can omit `libavformat-dev`, `libavutil-dev`, and `libswscale-dev` from this
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list.
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If you want to build the Python wrappers, you'll also need:
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`apt-get install python3-cffi python3-dev python3-pypandoc python3-setuptools`
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If you want to build the Rust wrappers, you'll also need:
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`apt-get install cargo bindgen`
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### RPM
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Install build dependencies:
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`dnf install cmake doctest-devel zlib-devel ncurses-devel gpm-devel readline-devel libqrcodegen-devel libunistring-devel OpenImageIO-devel pandoc`
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If you only intend to build core Notcurses (without multimedia support), you
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can omit `OpenImageIO-devel`. If you're building outside Fedora Core (e.g. with
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RPM Fusion), you might want to use FFmpeg rather than OpenImageIO.
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### Microsoft Windows
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Currently, building on Windows requires [MSYS2](https://www.msys2.org/) in its
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64-bit Universal C Runtime (UCRT) incarnation. This builds native Windows DLLs
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and EXEs, though it does not use Visual Studio. Install build dependencies:
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`pacman -S mingw-w64-ucrt-x86_64-cmake mingw-w64-ucrt-x86_64-doctest mingw-w64-ucrt-x86_64-ffmpeg mingw-w64-ucrt-x86_64-libunistring mingw-w64-ucrt-x86_64-ncurses mingw-w64-ucrt-x86_64-rust mingw-w64-ucrt-x86_64-toolchain`
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If you only intend to build core Notcurses (without multimedia support), you
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can omit `mingw-w64-ucrt-x86_64-ffmpeg`. The Windows build never uses GNU
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Readline, so don't worry about that.
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## Building
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* Create a subdirectory, traditionally `build` (this is not strictly necessary,
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but it keeps your source tree clean). Enter the directory.
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* `cmake ..`
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** You might want to set e.g. `CMAKE_BUILD_TYPE`. Use `-DVAR=val`.
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** To build without multimedia support, use `-DUSE_MULTIMEDIA=none`.
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* `make`
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* `make test`
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* `make install`
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* `sudo ldconfig`
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The default multimedia engine is FFmpeg. You can select a different engine
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using `USE_MULTIMEDIA`. Valid values are `ffmpeg`, `oiio` (for OpenImageIO),
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or `none`. Without a multimedia engine, Notcurses will be unable to decode
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images and videos.
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To get mouse events in the Linux console, you'll need the GPM daemon running,
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and you'll need run `cmake` with `-DUSE_GPM=on`.
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Run unit tests with `make test` following a successful build. If you have unit
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test failures, *please* file a bug including the output of
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`./notcurses-tester -p ../data`
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(`make test` also runs `notcurses-tester`, but hides important output).
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To watch the bitchin' demo, run `make demo`. More details can
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be found on the `notcurses-demo(1)` man page.
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Install with `make install` following a successful build. This installs the C
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core library, the C headers, the C++ library, and the C++ headers (note that
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the C headers are C++-safe). It does not install the Python or Rust wrappers.
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To install the Python wrappers (after installing the core library), run:
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```
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cd cffi
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python setup.py build
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python setup.py install
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```
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The Python wrappers are also available from [PyPi](https://pypi.org/project/notcurses/). To install the low-level Rust
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wrappers (`libnotcurses-sys`), run:
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```
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cd rust
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cargo build
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cargo install
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```
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The Rust wrappers are also available from [crates.io](https://crates.io/crates/libnotcurses-sys/).
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### Build options
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To set the C compiler, export `CC`. To set the C++ compiler, export `CXX`. The
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`CMAKE_BUILD_TYPE` CMake variable can be defined to any of its standard values,
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but must be `Debug` for use of `USE_COVERAGE`.
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* `DFSG_BUILD`: leave out all content considered non-free under the Debian Free
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Software Guidelines
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* `BUILD_TESTING`: build test targets
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* `USE_COVERAGE`: build coverage support (for developers, requires use of Clang)
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* `USE_DOCTEST`: build `notcurses-tester` with Doctest, requires `BUILD_TESTING`
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* `USE_DOXYGEN`: build interlinked HTML documentation with Doxygen
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* `USE_GPM`: build GPM console mouse support via libgpm
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* `USE_MULTIMEDIA`: `ffmpeg` for FFmpeg, `oiio` for OpenImageIO, `none` for none
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* `USE_PANDOC`: build man pages with pandoc
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* `USE_POC`: build small, uninstalled proof-of-concept binaries
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* `USE_QRCODEGEN`: build qrcode support via libqrcodegen
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* `USE_READLINE`: build readline support for Direct Mode
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* `USE_STATIC`: build static libraries (in addition to shared ones)
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