93 lines
2.8 KiB
Markdown
93 lines
2.8 KiB
Markdown
# Build Instructions (experimental GN build)
|
|
|
|
Follow the guidelines below for building Electron with the experimental GN
|
|
build.
|
|
|
|
> **NOTE**: The GN build system is in _experimental_ status, and currently only
|
|
> works on macOS and Linux, in debug mode, as a component build.
|
|
|
|
## Prerequisites
|
|
|
|
See the [macOS](build-instructions-osx.md#prerequisites) or
|
|
[Linux](build-instructions-linux.md#prerequisites) build instructions for the
|
|
requirements for your platform. In addition, you'll need to install
|
|
[`depot_tools`][depot-tools], the toolset used for fetching Chromium and its
|
|
dependencies.
|
|
|
|
[depot-tools]: http://commondatastorage.googleapis.com/chrome-infra-docs/flat/depot_tools/docs/html/depot_tools_tutorial.html#_setting_up
|
|
|
|
## Getting the Code
|
|
|
|
```sh
|
|
$ mkdir electron-gn && cd electron-gn
|
|
$ cat > .gclient <<-GCLIENT
|
|
solutions = [
|
|
{
|
|
"url": "https://github.com/electron/electron",
|
|
"managed": False,
|
|
"name": "src/electron",
|
|
},
|
|
]
|
|
GCLIENT
|
|
$ gclient sync --with_branch_heads --with_tags
|
|
# This will take a while, go get a coffee.
|
|
```
|
|
|
|
## Building
|
|
|
|
```sh
|
|
$ cd src
|
|
$ export CHROMIUM_BUILDTOOLS_PATH=`pwd`/buildtools
|
|
$ gn gen out/Default --args='root_extra_deps=["//electron"] is_electron_build=true is_component_build=true use_jumbo_build=true v8_promise_internal_field_count=1 v8_typed_array_max_size_in_heap=0'
|
|
```
|
|
|
|
This will generate all the ninja files needed for the build. You shouldn't have
|
|
to run `gn gen` again—if you want to change the build arguments you can run `gn
|
|
args out/Default` to bring up an editor.
|
|
|
|
To build, run `ninja` with the `electron:electron_app` target:
|
|
|
|
```sh
|
|
$ ninja -C out/Default electron:electron_app
|
|
# This will also take a while and probably heat up your lap.
|
|
```
|
|
|
|
This will build all of what was previously 'libchromiumcontent' (i.e. the
|
|
`content/` directory of `chromium` and its dependencies, incl. WebKit and V8),
|
|
so it will take a while.
|
|
|
|
To speed up subsequent builds, you can use [sccache][sccache]. Add the GN arg
|
|
`cc_wrapper="sccache"` by running `gn args out/Default` to bring up an editor.
|
|
|
|
[sccache]: https://github.com/mozilla/sccache
|
|
|
|
The built executable will be under `./out/Default`:
|
|
|
|
```sh
|
|
$ ./out/Default/Electron.app/Contents/MacOS/Electron
|
|
# or, on Linux
|
|
$ ./out/Default/electron
|
|
```
|
|
|
|
## Tests
|
|
|
|
To run the tests, you'll first need to build the test modules against the
|
|
same version of node.js that was built as part of the build process.
|
|
|
|
```sh
|
|
$ (cd electron/spec && npm i --nodedir=../../third_party/electron_node)
|
|
```
|
|
|
|
Then, run Electron with `electron/spec` as the argument:
|
|
|
|
```sh
|
|
$ ./out/Default/Electron.app/Contents/MacOS/Electron electron/spec
|
|
```
|
|
|
|
If you're debugging something, it can be helpful to pass some extra flags to
|
|
the Electron binary:
|
|
|
|
```sh
|
|
$ ./out/Default/Electron.app/Contents/MacOS/Electron electron/spec \
|
|
--ci --enable-logging -g 'BrowserWindow module'
|
|
```
|