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oak-editor/docs/build.md
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# Build Guide
This document describes how to build Oak Video Editor from source on Windows, Linux, and macOS.
## Prerequisites
- CMake 3.20+
- Ninja (recommended)
- Qt 6 (with private headers)
- FFmpeg 8.0+ development libraries (distro packages on Ubuntu/Debian are often too old; see the Linux section below)
- OpenImageIO
- OpenColorIO (2.x)
- OpenEXR
- Expat
- PortAudio
- OpenGL headers
- Vulkan SDK (optional, required for the Vulkan render backend)
- XKB common (Linux)
---
## Windows (MSYS2)
This guide uses [MSYS2](https://www.msys2.org/) with the UCRT64 toolchain.
### 1. Install MSYS2
Download and install MSYS2 from [https://www.msys2.org/](https://www.msys2.org/). Then open the **MSYS2 UCRT64** terminal.
### 2. Install Dependencies
```bash
pacman -Syu
pacman -S --needed \
mingw-w64-ucrt-x86_64-cmake \
mingw-w64-ucrt-x86_64-ninja \
mingw-w64-ucrt-x86_64-qt6-base \
mingw-w64-ucrt-x86_64-qt6-tools \
mingw-w64-ucrt-x86_64-ffmpeg \
mingw-w64-ucrt-x86_64-openimageio \
mingw-w64-ucrt-x86_64-opencolorio \
mingw-w64-ucrt-x86_64-openexr \
mingw-w64-ucrt-x86_64-fmt \
mingw-w64-ucrt-x86_64-expat \
mingw-w64-ucrt-x86_64-portaudio \
mingw-w64-ucrt-x86_64-vulkan-headers \
mingw-w64-ucrt-x86_64-vulkan-loader \
mingw-w64-ucrt-x86_64-gcc
```
> **Note:** Qt 6 private headers may require additional packages depending on the MSYS2 repository state. If CMake reports missing private headers, install `mingw-w64-ucrt-x86_64-qt6-base-private` if available.
### 3. Clone and Build
```bash
# Clone the repository
git clone --recursive https://github.com/OakVideoEditorCommunity/oak.git
cd oak
# Configure
cmake -S . -B build -G Ninja \
-DCMAKE_BUILD_TYPE=Release \
-DBUILD_QT6=ON
# Build
cmake --build build --config Release
```
### 4. Run Tests (Optional)
```bash
ctest --test-dir build --output-on-failure -C Release
```
---
## Linux
### Debian / Ubuntu
Install dependencies (FFmpeg is built from source below because distro packages are often too old):
```bash
sudo apt-get update
sudo apt-get install -y \
cmake ninja-build pkg-config nasm \
qt6-base-dev qt6-base-dev-tools qt6-base-private-dev qt6-tools-dev qt6-tools-dev-tools \
libopencolorio-dev libopenimageio-dev libopenexr-dev libexpat1-dev \
portaudio19-dev libgl1-mesa-dev libvulkan-dev libxkbcommon-dev
```
Build FFmpeg 8.0+ from source:
```bash
git clone --branch n8.1.1 --depth 1 https://git.ffmpeg.org/ffmpeg.git ffmpeg-src
cd ffmpeg-src
./configure \
--prefix="$PWD/../ffmpeg-install" \
--enable-static \
--disable-shared \
--disable-doc \
--disable-programs \
--disable-avdevice \
--disable-network \
--enable-pic \
--enable-gpl \
--enable-version3
make -j$(nproc)
make install
cd ..
```
Configure and build:
```bash
cmake -S . -B build -G Ninja \
-DBUILD_TESTS=ON -DBUILD_QT6=ON \
-DFFMPEG_ROOT="$PWD/ffmpeg-install"
cmake --build build --config Release
```
Run tests:
```bash
ctest --test-dir build --output-on-failure -C Release
```
### Fedora
Install dependencies:
```bash
sudo dnf install -y \
cmake ninja-build pkgconf-pkg-config \
qt6-qtbase-devel qt6-qtbase-private-devel qt6-qttools-devel \
ffmpeg-free-devel \
OpenImageIO-devel \
OpenColorIO-devel \
openexr-devel \
expat-devel \
portaudio-devel \
mesa-libGL-devel \
vulkan-headers \
vulkan-loader-devel \
libxkbcommon-devel \
gcc-c++ \
bzip2-devel
```
Configure and build:
```bash
cmake -S . -B build -G Ninja -DBUILD_TESTS=ON -DBUILD_QT6=ON
cmake --build build --config Release
```
Run tests:
```bash
ctest --test-dir build --output-on-failure -C Release
```
### Arch Linux
Install dependencies:
```bash
sudo pacman -Syu
sudo pacman -S --needed \
cmake ninja pkgconf \
qt6-base qt6-tools \
ffmpeg \
openimageio \
opencolorio \
openexr \
expat \
portaudio \
mesa \
vulkan-headers \
vulkan-icd-loader \
libxkbcommon \
fmt \
gcc
```
> **Note:** On Arch Linux, Qt 6 private headers are included in the `qt6-base` package.
Configure and build:
```bash
cmake -S . -B build -G Ninja -DBUILD_TESTS=ON -DBUILD_QT6=ON
cmake --build build --config Release
```
Run tests:
```bash
ctest --test-dir build --output-on-failure -C Release
```
---
## macOS
macOS is now a fully supported platform. See [`build_macos.md`](build_macos.md) for a dedicated, step-by-step guide.
Install dependencies:
```bash
brew update
brew install cmake ninja pkg-config qt@6 ffmpeg openimageio opencolorio openexr portaudio expat molten-vk vulkan-headers vulkan-loader
```
Build OpenTimelineIO (optional, required for OTIO support):
```bash
git clone --depth 1 --branch v0.16.0 https://github.com/PixarAnimationStudios/OpenTimelineIO.git
cmake -S OpenTimelineIO -B OpenTimelineIO/build -G Ninja \
-DOTIO_SHARED_LIBS=ON \
-DOTIO_PYTHON_BINDINGS=OFF \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX="${PWD}/otio-install"
cmake --build OpenTimelineIO/build
cmake --install OpenTimelineIO/build
```
Configure and build:
```bash
export PATH="$(brew --prefix qt@6)/bin:$PATH"
export CMAKE_PREFIX_PATH="$(brew --prefix qt@6)"
export OTIO_LOCATION="${PWD}/otio-install"
export OCIO_LOCATION="$(brew --prefix opencolorio)"
# Let CMake's FindVulkan locate the Homebrew Vulkan loader (optional,
# enables the Vulkan render backend)
export VULKAN_SDK="$(brew --prefix vulkan-loader)"
cmake -S . -B build -G Ninja -DBUILD_TESTS=ON -DBUILD_QT6=ON \
-DOTIO_LOCATION="${OTIO_LOCATION}" \
-DOCIO_LOCATION="${OCIO_LOCATION}"
cmake --build build --config Release
```
Run tests:
```bash
ctest --test-dir build --output-on-failure -C Release
```
---
## Build Options
| Option | Default | Description |
|--------|---------|-------------|
| `BUILD_TESTS` | `OFF` | Build unit tests |
| `BUILD_DOXYGEN` | `OFF` | Build Doxygen documentation |
| `USE_WERROR` | `OFF` | Treat warnings as errors |
| `BUILD_QT6` | `ON` | Build with Qt 6 instead of Qt 5 |
| `OTIO_LOCATION` | - | Path to OpenTimelineIO installation (optional) |
| `OCIO_LOCATION` | - | Path to OpenColorIO installation |
| `OAK_ENABLE_DYNAMIC_RENDER_BACKEND` | `ON` | Build dynamic render backend libraries (`liboakgl.so` / `liboakvulkan.so`) |
---
## Troubleshooting
### Qt 6 Not Found
Ensure Qt 6 is in your PATH and CMake prefix path:
```bash
# Linux / macOS
export PATH="/path/to/qt6/bin:$PATH"
export CMAKE_PREFIX_PATH="/path/to/qt6"
# Windows (MSYS2)
export PATH="/ucrt64/bin:$PATH"
```
### Missing Private Headers
If you see errors about missing Qt private headers, install the corresponding private development package for your distribution (e.g., `qt6-base-private-dev` on Debian/Ubuntu, `qt6-qtbase-private-devel` on Fedora).
### FFmpeg Not Found
Make sure FFmpeg development libraries are installed and `pkg-config` can locate them:
```bash
pkg-config --exists libavcodec && echo "Found" || echo "Not found"
```
### FFmpeg Version Too Old
If you encounter errors like `AV_PIX_FMT_GRAYF16 was not declared in this scope`, your FFmpeg is too old (Oak requires 8.0+). Build from source:
```bash
git clone --branch n8.1.1 --depth 1 https://git.ffmpeg.org/ffmpeg.git ffmpeg-src
cd ffmpeg-src
./configure \
--prefix="$PWD/../ffmpeg-install" \
--enable-static \
--disable-shared \
--disable-doc \
--disable-programs \
--disable-avdevice \
--disable-network \
--enable-pic \
--enable-gpl \
--enable-version3
make -j$(nproc)
make install
cd ..
```
Then pass `-DFFMPEG_ROOT="$PWD/ffmpeg-install"` to CMake.