Boot to Gecko aims to create a complete, standalone operating system for the open web.

You can read more about B2G here:

http://wiki.mozilla.org/B2G

https://developer.mozilla.org/en-US/docs/Mozilla/B2G_OS

Follow us on twitter: @Boot2Gecko

http://twitter.com/Boot2Gecko

Join the Mozilla Platform mailing list:

http://groups.google.com/group/mozilla.dev.platform

and talk to us on Matrix:

https://chat.mozilla.org/#/room/#b2g:mozilla.org

Discuss with Developers:

Discourse: https://discourse.mozilla-community.org/c/b2g-os-participation

1. Fetch the code: REPO_INIT_FLAGS="--depth=1" ./config.sh emulator-10
2. Setup your environment to fetch the custom NDK: export LOCAL_NDK_BASE_URL='ftp://ftp.kaiostech.com/ndk/android-ndk'
3. Install Gecko dependencies: cd gecko && ./mach bootstrap, choose option 4 (Android Geckoview).
4. Build: ./build.sh
5. Run the emulator: source build/envsetup.sh && lunch aosp_arm-userdebug && emulator -writable-system -selinux permissive

Because it's using a different c++ namespace than the AOSP base, we can't use the prebuilt NDK from Google. If you can't use the one built by KaiOS, here are the steps to build your own:

1. Download the ndk source: repo init -u https://android.googlesource.com/platform/manifest -b ndk-release-r20
2. change __ndk to __ in external/libcxx/include/__config:

-#define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__ndk,_LIBCPP_ABI_VERSION)
+#define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION)

3. Build the ndk: python ndk/checkbuild.py --no-build-tests