atsushi:/svn/android-native-libraries$ ~/android-ndk-r10d/build/tools/make-standalone-toolchain.sh --install-dir=build/tools/arm-clang --platform=android-21 --arch=arm --toolchain=abc
Invalid toolchain name: abc
Please use --toolchain=<name> with the name of a toolchain supported by the source NDK.
Try one of:  aarch64-linux-android-4.9 aarch64-linux-android-clang3.4 aarch64-linux-android-clang3.5 arm-linux-androideabi-4.6 arm-linux-androideabi-4.8 arm-linux-androideabi-4.9 arm-linux-androideabi-clang3.4 arm-linux-androideabi-clang3.5 llvm-3.4 llvm-3.5 mips64el-linux-android-4.9 mips64el-linux-android-clang3.4 mips64el-linux-android-clang3.5 mipsel-linux-android-4.6 mipsel-linux-android-4.8 mipsel-linux-android-4.9 mipsel-linux-android-clang3.4 mipsel-linux-android-clang3.5 renderscript x86-4.6 x86-4.8 x86-4.9 x86-clang3.4 x86-clang3.5 x86_64-4.9 x86_64-clang3.4 x86_64-clang3.5
atsushi:/svn/android-native-libraries$ ~/android-ndk-r10d/build/tools/make-standalone-toolchain.sh --install-dir=build/tools/arm-clang --platform=android-21 --arch=arm --toolchain=llvm-3.4
Invalid toolchain specified. Expected (arm-linux-androideabi-*|arm-eabi-*|x86-*|mipsel*|mips64el*)