Re: [LLVMdev] Clang now included in Android NDK r8c

[Greg Fitzgerald]

Hi LLVM Android NDK developers,

I was curious how clang was built for this release, but didn't find the llvm-setup executable in the NDK.  Can you share how your build was configured here?

And I see the Chromium build distributes a separate version of clang that looks to be somewhere beyond the 3.2 release.  Has there been any talk of both Android and Chromium sharing the same clang?  Or is it that Chromium needs to be on the bleeding edge for the Native Client stuff?  ...or something like that?

Thanks,

Greg

On Wed, Nov 14, 2012 at 7:19 AM, David Turner <di...@android.com> wrote:

cc +andrewhsieh +loganchien

On Tue, Nov 13, 2012 at 11:21 PM, Joe Abbey <jab...@arxan.com> wrote:

Hats off to the Android NDK team!

Thanks for including me here, but I'd like to clarify that this is all from the really hard work of Andrew Hsieh and Logan Chien, and a few other Android engineers.

(I'm actually not working on Android anymore, Andrew and Logan have taken over the NDK a year ago, and as you can see, they've been very productive :-))

 

Congrats to them then !

- David

http://developer.android.com/tools/sdk/ndk/index.html

Important changes:

• Added the Clang 3.1 compiler to the NDK. The GNU Compiler Collection (GCC) 4.6 is still the default, so you must explicitly enable the Clang compiler option as follows:
  • For ndk-build, export NDK_TOOLCHAIN_VERSION=clang3.1 or add this environment variable setting toApplication.mk.
  • For standalone builds, add --llvm-version=3.1 to make-standalone-toolchain.sh and replace CC andCXX in your makefile with <tool-path>/bin/clang and <tool-path>/bin/clang++. See STANDALONE-TOOLCHAIN.html for details.
    Note: This feature is experimental. Please try it and report any issues.

Joe

______________________________

Joe Abbey

Director of Software Development

Arxan Technologies

jab...@arxan.com www.arxan.com

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[Greg Fitzgerald]

Yes, llvm-config.  Thanks for the pointer to the build script - that's what I was looking for.

-Greg

On Thu, Jan 31, 2013 at 5:24 PM, Andrew Hsieh <andre...@google.com> wrote:

You mean llvm-config? It was deleted after the build.  You can modify our build script build-llvm.sh to get it back.

Clang/llvm-3.2 will be available in the next NDK release.  There is no plan to align release between NDK and the one in Chromium.

You can rebuild it from source.  Assuming $AOSP points to your android tree.

export NDK=$AOSP/ndk

cd $NDK

./build/tools/download-toolchain-sources.sh /tmp/ndk-$USER/src

./build/tools/build-llvm.sh /tmp/ndk-$USER/src $NDK --package-dir=/tmp/ndk-$USER/prebuilt llvm-3.2 --try-64

If you have lots of machine cycle to spare, you can rebuild the whole NDK package including clang-3.1 and clang-3.2

sudo apt-get install texinfo gcc-mingw32 wine bison flex dmake

./build/tools/make-release.sh --force --also-64

--
Thanks,

Andrew