Servo is a prototype web browser engine written in the Rust language. It is currently developed on 64-bit macOS, 64-bit Linux, 64-bit Windows, and Android.
Servo welcomes contribution from everyone. See
CONTRIBUTING.md
and HACKING_QUICKSTART.md
for help getting started.
Visit the Servo Project page for news and guides.
Building servo requires rustup, version 1.8.0 or more recent.
If you have an older version, run rustup self update
.
To install on Windows, download and run rustup-init.exe
then follow the onscreen instructions.
To install on other systems, run:
curl https://sh.rustup.rs -sSf | sh
This will also download the current stable version of Rust, which Servo won’t use. To skip that step, run instead:
curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain none
See also Other installation methods
Please select your operating system:
Xcode version 10.2 or above is recommended.
brew bundle install --file=etc/taskcluster/macos/Brewfile
brew bundle install --file=etc/taskcluster/macos/Brewfile-gstreamer
pip install virtualenv
sudo port install python27 py27-virtualenv cmake yasm llvm
brew install openssl
export OPENSSL_INCLUDE_DIR="$(brew --prefix openssl)/include"
export OPENSSL_LIB_DIR="$(brew --prefix openssl)/lib"
./mach build ...
Note: Please make sure the required PKG_CONFIG_PATH
environment variable is set the same as the one provided from brew info libffi
(Check this comment for more details).
If you've already partially compiled servo but forgot to do this step, run ./mach clean
, set the shell variables, and recompile.
Please run ./mach bootstrap
.
If this doesn't work, file a bug, and, run the commands below:
sudo apt install git curl autoconf libx11-dev \
libfreetype6-dev libgl1-mesa-dri libglib2.0-dev xorg-dev \
gperf g++ build-essential cmake virtualenv python-pip \
libssl-dev libbz2-dev liblzma-dev libosmesa6-dev libxmu6 libxmu-dev \
libglu1-mesa-dev libgles2-mesa-dev libegl1-mesa-dev libdbus-1-dev \
libharfbuzz-dev ccache clang libunwind-dev \
libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-bad1.0-dev autoconf2.13
Additionally, you'll need a local copy of GStreamer with a version later than 12.0. You can place it in support/linux/gstreamer/gstreamer
, or run ./mach bootstrap-gstreamer
to set it up.
If you are using Ubuntu 16.04 or Linux Mint 18.* run export HARFBUZZ_SYS_NO_PKG_CONFIG=1
before building to avoid an error with harfbuzz.
If you get an undefined symbol error on gst_player_get_config
try removing gir1.2-gst-plugins-bad-1.0
and all old versions of clang, see #22016
If you are on Ubuntu 14.04 and encountered errors on installing these dependencies involving libcheese
, see #6158 for a workaround. You may also need to install gcc 4.9, clang 4.0, and cmake 3.2:
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install gcc-4.9 g++-4.9
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.9 60 --slave /usr/bin/g++ g++ /usr/bin/g++-4.9
clang 4.0:
wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
sudo apt-add-repository "deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-4.0 main"
sudo apt-get update
sudo apt-get install -y clang-4.0
cmake 3.2:
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:george-edison55/cmake-3.x
sudo apt-get update
sudo apt-get install cmake
If virtualenv
does not exist, try python-virtualenv
.
Please run ./mach bootstrap
.
If this doesn't work, file a bug, and, run the commands below:
sudo dnf install curl libtool gcc-c++ libXi-devel libunwind-devel \
freetype-devel mesa-libGL-devel mesa-libEGL-devel glib2-devel libX11-devel libXrandr-devel gperf \
fontconfig-devel cabextract ttmkfdir python2 python2-virtualenv python2-pip expat-devel \
rpm-build openssl-devel cmake bzip2-devel libX11-devel libXcursor-devel libXmu-devel mesa-libOSMesa-devel \
dbus-devel ncurses-devel harfbuzz-devel ccache mesa-libGLU-devel clang clang-libs gstreamer1-devel \
gstreamer1-plugins-base-devel gstreamer1-plugins-bad-free-devel autoconf213
Please run ./mach bootstrap
.
If this doesn't work, file a bug, and, run the commands below:
sudo yum install curl libtool gcc-c++ libXi-devel \
freetype-devel mesa-libGL-devel mesa-libEGL-devel glib2-devel libX11-devel libXrandr-devel gperf \
fontconfig-devel cabextract ttmkfdir python python-virtualenv python-pip expat-devel \
rpm-build openssl-devel cmake3 bzip2-devel libXcursor-devel libXmu-devel mesa-libOSMesa-devel \
dbus-devel ncurses-devel python34 harfbuzz-devel ccache clang clang-libs llvm-toolset-7
Build inside llvm-toolset
and devtoolset
:
scl enable devtoolset-7 llvm-toolset-7 bash
with the following environmental variables set:
export CMAKE=cmake3
export LIBCLANG_PATH=/opt/rh/llvm-toolset-7/root/usr/lib64
sudo zypper install libX11-devel libexpat-devel libbz2-devel Mesa-libEGL-devel Mesa-libGL-devel cabextract cmake \
dbus-1-devel fontconfig-devel freetype-devel gcc-c++ git glib2-devel gperf \
harfbuzz-devel libOSMesa-devel libXcursor-devel libXi-devel libXmu-devel libXrandr-devel libopenssl-devel \
python-pip python-virtualenv rpm-build glu-devel ccache llvm-clang libclang autoconf213 gstreamer-devel \
gstreamer-plugins-base-devel gstreamer-plugins-bad-devel
sudo pacman -S --needed base-devel git python2 python2-virtualenv python2-pip mesa cmake bzip2 libxmu glu \
pkg-config ttf-fira-sans harfbuzz ccache clang autoconf2.13 gstreamer gstreamer-vaapi
sudo emerge net-misc/curl \
media-libs/freetype media-libs/mesa dev-util/gperf \
dev-python/virtualenv dev-python/pip dev-libs/openssl \
media-libs/harfbuzz dev-util/ccache \
x11-libs/libXmu media-libs/glu x11-base/xorg-server sys-devel/clang \
media-libs/gstreamer media-libs/gst-plugins-bad media-libs/gst-plugins-base
with the following environment variable set:
export LIBCLANG_PATH="/usr/lib64/llvm/*/lib64"
-
Install Python for Windows (https://www.python.org/downloads/release/python-2716/). The Windows x86-64 MSI installer is fine. You should change the installation to install the "Add python.exe to Path" feature.
-
Install virtualenv.
In a normal Windows Shell (cmd.exe or "Command Prompt" from the start menu), do:
pip install virtualenv
If this does not work, you may need to reboot for the changed PATH settings (by the python installer) to take effect.
-
Install the most recent GStreamer development package following these instructions. You will also need to add
C:\gstreamer\1.0\x86_64\lib
to yourLIB
environment variable. -
Install Git for Windows (https://git-scm.com/download/win). DO allow it to add git.exe to the PATH (default settings for the installer are fine).
-
Install Visual Studio Community 2017 (https://www.visualstudio.com/vs/community/). You MUST add "Visual C++" to the list of installed components. It is not on by default. Visual Studio 2017 MUST installed to the default location or mach.bat will not find it.
You may experience much faster builds on Windows by following these steps. (Related Rust issue: rust-lang/rust#37543)
- Download the latest version of LLVM (https://releases.llvm.org/).
- Run the installer and choose to add LLVM to the system PATH.
- Add the following to your Cargo config (Found at
%USERPROFILE%\.cargo\config
). You may need to change the triple to match your environment.
[target.x86_64-pc-windows-msvc]
linker = "lld-link.exe"
If you encountered errors with the environment above, do the following for a workaround:
- Download and install Build Tools for Visual Studio 2017
- Install
python2.7 x86-x64
andvirtualenv
- Run
mach.bat build -d
.
If you have troubles with
x64 type
prompt asmach.bat
set by default:
- You may need to choose and launch the type manually, such as
x86_x64 Cross Tools Command Prompt for VS 2017
in the Windows menu.)cd to/the/path/servo
python mach build -d
If you got the error
Cannot run mach in a path on a case-sensitive file system on Windows
:
- Open Command Prompt or PowerShell as administrator.
- Disable case-sensitive for servo path,
fsutil.exe file SetCaseSensitiveInfo X:\path\to\servo disable
Run ./mach bootstrap-android --build
to get Android-specific tools. See wiki for
details.
Servo's build system uses rustup.rs to automatically download a Rust compiler.
This is a specific version of Rust Nightly determined by the
rust-toolchain
file.
Servo is built with Cargo, the Rust package manager. We also use Mozilla's Mach tools to orchestrate the build and other tasks.
To build Servo in development mode. This is useful for development, but the resulting binary is very slow.
git clone https://github.com/servo/servo
cd servo
./mach build --dev
./mach run tests/html/about-mozilla.html
Or on Windows MSVC, in a normal Command Prompt (cmd.exe):
git clone https://github.com/servo/servo
cd servo
mach.bat build --dev
For benchmarking, performance testing, or
real-world use, add the --release
flag to create an optimized build:
./mach build --release
./mach run --release tests/html/about-mozilla.html
Note: mach build
will build both servo
and libsimpleservo
. To make compilation a bit faster, it's possible to only compile the servo binary: ./mach build --dev -p servo
.
If you’re making changes to one crate that cause build errors in another crate, consider this instead of a full build:
./mach check
It will run cargo check
, which runs the analysis phase of the compiler
(and so shows build errors if any) but skips the code generation phase.
This can be a lot faster than a full build,
though of course it doesn’t produce a binary you can run.
For ARM (armv7-linux-androideabi
, most phones):
./mach build --release --android
./mach package --release --android
For x86 (typically for the emulator):
./mach build --release --target i686-linux-android
./mach package --release --target i686-linux-android
Run Servo with the command:
./servo [url] [arguments] # if you run with nightly build
./mach run [url] [arguments] # if you run with mach
# For example
./mach run https://www.google.com
-p INTERVAL
turns on the profiler and dumps info to the console everyINTERVAL
seconds-s SIZE
sets the tile size for painting; defaults to 512-z
disables all graphical output; useful for running JS / layout tests-Z help
displays useful output to debug servo
Ctrl
+L
opens URL prompt (Cmd
+L
on Mac)Ctrl
+R
reloads current page (Cmd
+R
on Mac)Ctrl
+-
zooms out (Cmd
+-
on Mac)Ctrl
+=
zooms in (Cmd
+=
on Mac)Alt
+left arrow
goes backwards in the history (Cmd
+left arrow
on Mac)Alt
+right arrow
goes forwards in the history (Cmd
+right arrow
on Mac)Esc
orCtrl
+Q
exits Servo (Cmd
+Q
on Mac)
There are lots of mach commands you can use. You can list them with ./mach --help
.
The generated documentation can be found on https://doc.servo.org/servo/index.html