Unrecognized ‘x86’ specified in the ANDROID_ABI option

Hi guys,

I prepared scripts to compile Urho3D binaries, for all the platforms one month ago.
For Android I used ANDROID_ABI=x86 to have more performance on emulators.

But today I pulled master brunch and tried to compile fresh version of Urho3D and got the error on Android build:

CMake Error at CMake/Toolchains/Android.cmake:242 (message):
Unrecognized ‘x86’ specified in the ANDROID_ABI option, supported values
are: “armeabi-v7a”, “armeabi-v6”, “armeabi”.

at the same time native(linux-x64) and web builds compiled well.

Seems that something has changed in the Android building configuration since my last pull.
I use android-ndk-r12b and I also tried to compile on android-ndk-r13b and got the same error.

I investigated commits on master and found commit with message (23 days ago):

Make the CMake/Android toolchain file compatible with NDK 13c.

but there is not NDK 13c on official site. Latest version is NDK 14, previous NDK 13b.

Guys, any suggestion, what can it be?
Urho does not support ANDROID_ABI=x86 any more, does it?

Thanks in advance.

It is still supported. We have defaulted to use Clang instead of GCC for Android build now. Travis CI shows how it should be done. https://github.com/urho3d/Urho3D/blob/1bd123ecfb387bc36455b30f3e3d601b6f20f28d/.travis.yml#L278-L283

Thanks, using link that you attached I specified -DANDROID_TOOLCHAIN_NAME=x86-4.9 and it helped in my case.

Are there any differences between clang and gcc compilation results?

You have to test that yourself with your application. Note that the move is the reaction to Android NDK release notes where GCC compiler toolchain is marked as deprecated and could be removed in future releases of NDK.

I tried to migrate to clang, but got another error:

– Check for working CXX compiler: /opt/sdks/android-ndk-r14b/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++
– Check for working CXX compiler: /opt/sdks/android-ndk-r14b/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++ – broken
CMake Error at /usr/share/cmake-3.5/Modules/CMakeTestCXXCompiler.cmake:54 (message):
The C++ compiler
"/opt/sdks/android-ndk-r14b/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++"
is not able to compile a simple test program.

and a lot of errors like:

/usr/bin/ld: cannot find Scrt1.o: No such file or directory

/usr/bin/ld: cannot find crti.o: No such file or directory

/usr/bin/ld: cannot find crtbeginS.o: No such file or directory

/usr/bin/ld: skipping incompatible
/opt/sdks/android-ndk-r14b/sources/cxx-stl/llvm-libc++/libs/x86/libc++_static.a
when searching for -lc++_static

/usr/bin/ld: cannot find -lc++_static

/usr/bin/ld: skipping incompatible

seems that clang compiler trying to load shared libs using native ld that is not compatible with them.

Sorry if this is not helpful for you but as I have shown you before that all our Android CI builds have moved to Clang for quite some time now and they are all fine since then. Although they still use Android NDK 13b but it should not make any differences. Also see this Urho3D 1.7 release pending work.

Ensure you have tested on a clean/new build tree.