Support build for A311D

Add cross compilation support for A311D SoC platform. A prebuilt-sdk
for aarch64 and Linux Kernel version 4.9 is provided.

basel build --config A311D //samples/lenet:lenet_asymu8_cc

Signed-off-by: Jiang Bo <bo.jiang@verisilicon.com>
Signed-off-by: Kainan Cha <kainan.cha@verisilicon.com>

.bazelrc

@@ -0,0 +1,20 @@
+# Auto generated!
+
+# Default: x86_64_linux vSimualtor
+build --config x86_64_linux
+
+# Usage example: bazel build --config x86_64_linux
+build:x86_64_linux --define target_device=x86_64_linux
+
+# Usage example: bazel build --config A311D
+build:A311D --define linux=true
+build:A311D --spawn_strategy=standalone
+build:A311D --crosstool_top=@TOOLCHAINS//gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu:toolchain
+build:A311D --host_crosstool_top=@bazel_tools//tools/cpp:toolchain
+build:A311D --cpu=armv8-a
+build:A311D --compiler=gcc
+build:A311D --copt -Wno-ignored-attributes
+build:A311D --copt -Wno-unused-function
+build:A311D --copt -Wno-sequence-point
+build:A311D --copt -Wno-implicit-fallthrough
+build:A311D --define target_device=aarch64_A311D

.bazelversion

@@ -0,0 +1 @@
+3.1.0

WORKSPACE

@@ -1,5 +1,17 @@
 workspace(name = "TIM_VX")
 
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "aarch64_A311D",
+    build_file = "@//prebuilt-sdk/x86_64_linux:BUILD",
+    sha256 = "9c3fe033f6d012010c92ed1f173b5410019ec144ddf68cbc49eaada2b4737e7f",
+    strip_prefix = "aarch64_A311D_D312513_A294074_R311680_T312233_O312045",
+    urls = [
+        "https://github.com/VeriSilicon/TIM-VX/releases/download/v1.1.28/aarch64_A311D_D312513_A294074_R311680_T312233_O312045.tgz",
+    ],
+)
+
 local_repository(
     name = 'TOOLCHAINS',
     path = 'toolchains',

prebuilt-sdk/BUILD

@@ -5,9 +5,15 @@ config_setting(
     values = {"define": "target_device=x86_64_linux"},
 )
 
+config_setting(
+    name = "aarch64_A311D",
+    values = {"define": "target_device=aarch64_A311D"},
+)
+
 cc_library(
     name = "VIV_SDK_LIB",
     deps = select({
+        "aarch64_A311D": ["@aarch64_A311D//:VIV_SDK_LIB"],
         "//conditions:default": ["//prebuilt-sdk/x86_64_linux:VIV_SDK_LIB"],
     }),
 )