Clone this repo:
  1. ef58803 Build libgcc_s DLLs with additional linker flags by Pirama Arumuga Nainar · 3 months ago master ndk-release-r19
  2. a74813a Merge "Add __emutls_unregister_key function" by Treehugger Robot · 4 months ago
  3. 4089f56 libgcc: work around old Bionic loader bug by Ryan Prichard · 5 months ago
  4. 89b2029 Add __emutls_unregister_key function by Ryan Prichard · 6 months ago
  5. 81788f3 Delay emutls deallocation for one round by Ryan Prichard · 7 months ago ndk-release-r18 ndk-r18-beta1 ndk-r18-beta2 ndk-r18b

Building GCC for Android

The following process is used to build the GCC that is used by both the Android platfrom and the NDK.

Both Linux and Windows toolchains are built on Linux machines. Windows host binaries are built with mingw. Building binaries for Mac OS X should be built using 10.8 to ensure compatibility with Android's minimum supported hosts.


  • Android GCC Repository

    • Check out the branch gcc

      repo init -u -b gcc
      # Googlers, use
      repo init -u \
          persistent- \
          -b gcc
  • Additional Linux Dependencies (available from apt):

    • texinfo
    • gcc-mingw32
    • bison
    • flex
    • libtool
  • Mac OS X also requires Xcode.

Host/Target prebuilts

For Linux or Darwin:

# Additional options and toolchain names will be show with --help.
$ python --toolchain TOOLCHAIN_NAME

For Windows, from Linux:

$ python --system windows TOOLCHAIN_NAME