VulkanViewer on Android

platform_tools/android/bin/utils/setup_toolchain.sh

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 #!/bin/bash
 #
 # setup_toolchain.sh: Sets toolchain environment variables used by other scripts.
 
 # Fail-fast if anything in the script fails.
@@ skipping 24 matching lines @@
   TOOLCHAINS=${SCRIPT_DIR}/../toolchains
 
   ANDROID_ARCH=${ANDROID_ARCH-arm}
   NDK=r11c
 
   if [[ $ANDROID_ARCH == *64* ]]; then
       API=21  # Android 5.0
   else
       API=14  # Android 4.0
   fi
+  
+  if [ "$SKIA_VULKAN" == "true" ]; then
+      API=24  # Android N Preview
+  fi
 
   TOOLCHAIN=$ANDROID_ARCH-$NDK-$API
   HOST=`uname | tr '[A-Z]' '[a-z]'`
 
   exportVar ANDROID_TOOLCHAIN "${TOOLCHAINS}/${TOOLCHAIN}"
 
   if [ ! -d "$ANDROID_TOOLCHAIN" ]; then
     mkdir -p $TOOLCHAINS
     pushd $TOOLCHAINS
     curl -o $NDK.zip https://dl.google.com/android/repository/android-ndk-$NDK-$HOST-x86_64.zip
@@ skipping 88 matching lines @@
 # Create symlinks for nm & readelf and add them to the path so that the ninja
 # build uses them instead of attempting to use the one on the system.
 # This is required to build using ninja on a Mac.
 if [ $(uname) == "Darwin" ]; then
   ln -sf $ANDROID_TOOLCHAIN_PREFIX-nm $ANDROID_TOOLCHAIN/nm
   ln -sf $ANDROID_TOOLCHAIN_PREFIX-readelf $ANDROID_TOOLCHAIN/readelf
   ln -sf $ANDROID_TOOLCHAIN_PREFIX-as $ANDROID_TOOLCHAIN/as
 fi
 
 exportVar PATH ${ANDROID_TOOLCHAIN}/bin:${PATH}