Fix android_arm64 target for experimental ndk

BUG=354405
LOG=N
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/233163003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20659 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Makefile.android

@@ -47,20 +47,20 @@ else
 endif
 
 ifeq ($(ARCH), android_arm)
-  DEFINES  = target_arch=arm v8_target_arch=arm android_target_arch=arm
+  DEFINES  = target_arch=arm v8_target_arch=arm android_target_arch=arm android_target_platform=9
   DEFINES += arm_neon=0 arm_version=7
   TOOLCHAIN_ARCH = arm-linux-androideabi
   TOOLCHAIN_PREFIX = $(TOOLCHAIN_ARCH)
   TOOLCHAIN_VER = 4.6
 else
   ifeq ($(ARCH), android_arm64)
-    DEFINES  = target_arch=arm64 v8_target_arch=arm64 android_target_arch=arm64
+    DEFINES  = target_arch=arm64 v8_target_arch=arm64 android_target_arch=arm64 android_target_platform=20
     TOOLCHAIN_ARCH = aarch64-linux-android
     TOOLCHAIN_PREFIX = $(TOOLCHAIN_ARCH)
     TOOLCHAIN_VER = 4.8
   else
     ifeq ($(ARCH), android_mipsel)
-      DEFINES  = target_arch=mipsel v8_target_arch=mipsel
+      DEFINES  = target_arch=mipsel v8_target_arch=mipsel android_target_platform=9
       DEFINES += android_target_arch=mips mips_arch_variant=mips32r2
       TOOLCHAIN_ARCH = mipsel-linux-android
       TOOLCHAIN_PREFIX = $(TOOLCHAIN_ARCH)
@@ -68,7 +68,7 @@ else
 
     else
       ifeq ($(ARCH), android_ia32)
-        DEFINES = target_arch=ia32 v8_target_arch=ia32 android_target_arch=x86
+        DEFINES = target_arch=ia32 v8_target_arch=ia32 android_target_arch=x86 android_target_platform=9
         TOOLCHAIN_ARCH = x86
         TOOLCHAIN_PREFIX = i686-linux-android
         TOOLCHAIN_VER = 4.6

build/android.gypi

@@ -51,7 +51,7 @@
         'android_stlport_libs': '<(android_stlport)/libs',
       }, {
         'variables': {
-          'android_sysroot': '<(android_ndk_root)/platforms/android-9/arch-<(android_target_arch)',
+          'android_sysroot': '<(android_ndk_root)/platforms/android-<(android_target_platform)/arch-<(android_target_arch)',
           'android_stlport': '<(android_ndk_root)/sources/cxx-stl/stlport/',
         },
         'android_include': '<(android_sysroot)/usr/include',