Installation

This is the full build and install page.

If you just want the fastest path to a first build, use getting-started. This page is for the complete picture: requirements, optional dependencies, build flags, install, and downstream consumption.

icey uses CMake to build from source. The codebase is cross-platform and requires a C++20 compiler.

Requirements

Requirement	Version
CMake	3.21+
C++ compiler	GCC 12+, Clang 15+, AppleClang 15+, MSVC 2022
OpenSSL	3.x
pkg-config	(Linux/macOS only)

Platform Dependencies

sudo apt-get update
sudo apt-get install -y build-essential pkg-config git cmake libssl-dev

FFmpeg (optional — enables av module):

# Ubuntu/Debian
sudo apt-get install -y libavcodec-dev libavdevice-dev libavformat-dev libswresample-dev libswscale-dev

# Fedora/RHEL
sudo dnf install ffmpeg-devel

If FFmpeg is installed in a non-standard location:

cmake -B build -DFFMPEG_ROOT=/path/to/ffmpeg

OpenCV (optional):

sudo apt-get install -y libopencv-dev

Uses Homebrew. Works on both Intel and Apple Silicon.

brew install cmake openssl

FFmpeg (optional):

brew install ffmpeg

Note

On macOS you must point CMake at Homebrew's OpenSSL:

cmake -B build -DOPENSSL_ROOT_DIR=$(brew --prefix openssl)

Requirements:

OpenSSL: install via vcpkg:

vcpkg install openssl:x64-windows

Or download prebuilt binaries from slproweb.com and set OPENSSL_ROOT_DIR.

FFmpeg (optional):

Download development libraries from gyan.dev. Add the bin directory to your system PATH, then set FFMPEG_ROOT:

cmake -B build -DFFMPEG_ROOT=C:\vendor\ffmpeg

Optional Dependencies

These are auto-detected by CMake. If they are present, the matching modules build automatically.

Dependency	Enables	Notes
FFmpeg 5+/6+/7+	`av` module (capture, encode, decode)	See platform tabs above
OpenCV 3.0+	OpenCV integration in `av`	`apt install libopencv-dev`
libdatachannel	`webrtc` module	Fetched automatically via FetchContent

Build

git clone https://github.com/nilstate/icey.git
cd icey
cmake -B build -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTS=ON
cmake --build build --parallel $(nproc)
ctest --test-dir build --output-on-failure

On macOS, replace $(nproc) with $(sysctl -n hw.ncpu) and add -DOPENSSL_ROOT_DIR=$(brew --prefix openssl).

Command line

git clone https://github.com/nilstate/icey.git
cd icey
cmake -B build -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTS=ON -DOPENSSL_ROOT_DIR=C:\vendor\OpenSSL-Win64
cmake --build build --config Release --parallel
ctest --test-dir build -C Release --output-on-failure
cmake --install build --prefix C:\icey

Visual Studio

Open CMake GUI, point source to the icey root, configure, generate
Open build/icey.sln in Visual Studio
Build Debug and/or Release configurations

Generate an Xcode project instead of Makefiles:

cmake -B build -G Xcode -DOPENSSL_ROOT_DIR=$(brew --prefix openssl)
open build/icey.xcodeproj

Install

cmake --install build --prefix /usr/local

That gives you exported icey::... targets for find_package.

CMake Options

Option	Default	Description
`BUILD_TESTS`	`OFF`	Build module tests
`BUILD_TESTS_<module>`	`OFF`	Build tests for a specific module
`BUILD_SAMPLES`	`OFF`	Build module samples
`BUILD_SAMPLES_<module>`	`OFF`	Build samples for a specific module
`BUILD_MODULE_<name>`	`ON`	Set to `OFF` to disable a specific module
`BUILD_SHARED_LIBS`	`OFF`	Build shared libraries instead of static
`ENABLE_NATIVE_ARCH`	`ON`	Tune for build machine CPU (`-march=native`)
`ENABLE_LTO`	`ON`	Enable link-time optimization
`ASAN`	`OFF`	Enable AddressSanitizer

Example Configurations

cmake -B build -DCMAKE_BUILD_TYPE=Debug -DBUILD_TESTS=ON

cmake -B build -DBUILD_MODULE_pacm=OFF -DBUILD_MODULE_pluga=OFF

cmake -B build -DCMAKE_BUILD_TYPE=Debug -DASAN=ON -DBUILD_TESTS=ON

cmake -B build -DFFMPEG_ROOT=/opt/ffmpeg

cmake -B build -DOPENSSL_ROOT_DIR=$(brew --prefix openssl)

Use as a Dependency

include(FetchContent)
FetchContent_Declare(icey
  GIT_REPOSITORY https://github.com/nilstate/icey.git
  GIT_TAG 2.4.0
)
FetchContent_MakeAvailable(icey)
target_link_libraries(myapp PRIVATE icey::base icey::net icey::http)

find_package(icey REQUIRED)
target_link_libraries(myapp PRIVATE icey::base icey::net icey::http)

Package Managers

The upstream public registries are not published yet, but the repo contains working local packaging entry points:

# Conan
conan create packaging/conan --build=missing -s compiler.cppstd=20

# vcpkg overlay port
ICEY_VCPKG_SOURCE_PATH=$PWD vcpkg install icey --overlay-ports=$PWD/packaging/vcpkg

# Arch package / AUR seed
cd packaging/arch && makepkg --force --cleanbuild --syncdeps

# Homebrew tap-local formulae
brew install --formula ./packaging/homebrew/Formula/libdatachannel.rb
brew install --formula ./packaging/homebrew/Formula/icey.rb

# Debian source package / Launchpad PPA seed
make package-debian-source

If you are cutting a real release and need the version-sync, tag, archive-pin, and package publication flow, use releasing.md.

Docker

docker build -t icey .

Multi-stage Ubuntu 24.04 image via the included Dockerfile.