Update build scripts and documents of workload samples for wasi-sdk-12.0 (#484)

Update the build scripts of sample workloads (meshoptimizer/bwa/wasm-av1) to use the wasi-sdk-12.0 firstly to build the workload and discard clang-11, as wasi-sdk-12 supports wasi, simd and pthread better. And update the related documents.
Also modify wasm mini loader to sync up with the change of wasm normal loader.

Signed-off-by: Wenyong Huang <wenyong.huang@intel.com>

samples/workload/docker/Dockerfile

@@ -1,29 +1,32 @@
 FROM ubuntu:18.04 as builder
 
+RUN apt update \
+      && apt install -y lsb-release software-properties-common build-essential \
+          wget curl git tree zip unzip
+
 #
 # install clang and llvm
-COPY llvm.sh /tmp
-RUN apt update \
-    && apt install -y lsb-release wget software-properties-common build-essential \
-    && cd /tmp \
-    && chmod a+x llvm.sh \
-    && ./llvm.sh 11
+# COPY llvm.sh /tmp
+# RUN apt update \
+#     && apt install -y lsb-release wget software-properties-common build-essential \
+#     && cd /tmp \
+#     && chmod a+x llvm.sh \
+#     && ./llvm.sh 11
 
-ARG WASI_SDK_VER=11.0
-ARG WABT_VER=1.0.19
+ARG WASI_SDK_VER=12
+ARG WABT_VER=1.0.20
 ARG CMAKE_VER=3.16.2
 ARG BINARYEN_VER=version_97
 ARG BAZEL_VER=3.7.0
 
 #
 # install wasi-sdk
-ARG WASI_SDK_FILE="wasi-sdk-${WASI_SDK_VER}-linux.tar.gz"
+ARG WASI_SDK_FILE="wasi-sdk-${WASI_SDK_VER}.0-linux.tar.gz"
 COPY ${WASI_SDK_FILE} /opt
 RUN cd /opt \
     && tar zxf ${WASI_SDK_FILE} \
     && rm ${WASI_SDK_FILE} \
-    && ln -sf /opt/wasi-sdk-${WASI_SDK_VER} /opt/wasi-sdk \
-    && ln -sf /opt/wasi-sdk/lib/clang/10.0.0/lib/wasi/ /usr/lib/llvm-11/lib/clang/11.0.1/lib/
+    && ln -sf /opt/wasi-sdk-${WASI_SDK_VER}.0 /opt/wasi-sdk
 
 #
 # install wabt
@@ -44,11 +47,6 @@ RUN cd /tmp \
     && ./${CMAKE_FILE} --prefix=/opt/cmake --skip-license  \
     && ln -sf /opt/cmake/bin/cmake /usr/local/bin/cmake
 
-#
-# install tools
-RUN apt update \
-      && apt install -y git tree
-
 #
 # install emsdk
 RUN cd /opt \
@@ -68,15 +66,13 @@ RUN cd /opt \
     && rm ${BINARYEN_FILE}  \
     && ln -sf /opt/binaryen-${BINARYEN_VER} /opt/binaryen
 
-RUN apt install -y unzip zip
-
-#
-# install bazel
-ARG BAZEL_FILE=bazel-${BAZEL_VER}-installer-linux-x86_64.sh
-COPY ${BAZEL_FILE} /tmp
-RUN cd /tmp \
-      && chmod a+x ${BAZEL_FILE} \
-      && ./${BAZEL_FILE}
+# #
+# # install bazel
+# ARG BAZEL_FILE=bazel-${BAZEL_VER}-installer-linux-x86_64.sh
+# COPY ${BAZEL_FILE} /tmp
+# RUN cd /tmp \
+#       && chmod a+x ${BAZEL_FILE} \
+#       && ./${BAZEL_FILE}
 
 #
 # Clean up

samples/workload/docker/docker_build.sh

@@ -1,34 +1,32 @@
+#!/usr/bin/env bash
 #
 # Copyright (C) 2019 Intel Corporation.  All rights reserved.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 #
 
-#!/bin/bash
-
-BUILD_CONTENT="/tmp/build_content"
-
+readonly BUILD_CONTENT="/tmp/build_content"
 if [[ ! -d ${BUILD_CONTENT} ]]; then
   mkdir ${BUILD_CONTENT}
 fi
 
-WASI_SDK_VER=11.0
-WABT_VER=1.0.19
-CMAKE_VER=3.16.2
-BINARYEN_VER=version_97
-BAZEL_VER=3.7.0
+readonly WASI_SDK_VER=12
+readonly WABT_VER=1.0.20
+readonly CMAKE_VER=3.16.2
+readonly BINARYEN_VER=version_97
+readonly BAZEL_VER=3.7.0
 
-cd ${BUILD_CONTENT}
-if [[ ! -f wasi-sdk-${WASI_SDK_VER}-linux.tar.gz ]]; then
-  wget https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-11/wasi-sdk-${WASI_SDK_VER}-linux.tar.gz
+cd ${BUILD_CONTENT} || exit
+if [[ ! -f wasi-sdk-${WASI_SDK_VER}.0-linux.tar.gz ]]; then
+  wget https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VER}/wasi-sdk-${WASI_SDK_VER}.0-linux.tar.gz
 fi
 
 if [[ ! -f wabt-${WABT_VER}-ubuntu.tar.gz ]]; then
   wget https://github.com/WebAssembly/wabt/releases/download/${WABT_VER}/wabt-${WABT_VER}-ubuntu.tar.gz
 fi
 
-if [[ ! -f llvm.sh ]]; then
-  wget https://apt.llvm.org/llvm.sh
-fi
+# if [[ ! -f llvm.sh ]]; then
+#   wget https://apt.llvm.org/llvm.sh
+# fi
 
 if [[ ! -f cmake-${CMAKE_VER}-Linux-x86_64.sh ]]; then
   wget https://github.com/Kitware/CMake/releases/download/v${CMAKE_VER}/cmake-${CMAKE_VER}-Linux-x86_64.sh
@@ -41,30 +39,21 @@ fi
 if [[ ! -f bazel-${BAZEL_VER}-installer-linux-x86_64.sh ]]; then
   wget https://github.com/bazelbuild/bazel/releases/download/${BAZEL_VER}/bazel-${BAZEL_VER}-installer-linux-x86_64.sh
 fi
-cd - > /dev/null
+cd - > /dev/null || exit
 
-DOCKERFILE_PATH=$(dirname $(realpath $0))
+DOCKERFILE_PATH=$(dirname "$(realpath "$0")")
 
 docker build \
-  --build-arg http_proxy=${http_proxy} \
-  --build-arg https_proxy=${https_proxy} \
-  --build-arg HTTP_PROXY=${http_proxy} \
-  --build-arg HTTPS_PROXY=${https_proxy} \
   --build-arg WASI_SDK_VER=${WASI_SDK_VER} \
   --build-arg WABT_VER=${WABT_VER} \
   --build-arg CMAKE_VER=${CMAKE_VER} \
   --build-arg BINARYEN_VER=${BINARYEN_VER} \
   --build-arg BAZEL_VER=${BAZEL_VER} \
-  -t clang_env:0.1 -f ${DOCKERFILE_PATH}/Dockerfile ${BUILD_CONTENT}
+  -t clang_env:0.1 -f "${DOCKERFILE_PATH}"/Dockerfile ${BUILD_CONTENT}
 
 docker run --rm -it \
-  -e http_proxy=${http_proxy} \
-  -e https_proxy=${https_proxy} \
-  -e HTTP_PROXY=${http_proxy} \
-  -e HTTPS_PROXY=${htpps_proxy} \
   --name workload_w_clang \
-  --mount type=bind,source=$(pwd),target=/data/project \
-  --mount type=bind,source=$(pwd)/../cmake,target=/data/cmake \
+  --mount type=bind,source="$(pwd)",target=/data/project \
   -w /data/project \
   clang_env:0.1 \
   /bin/bash -c /build.sh