emcc emsdk install

~/code/emsdk ~/code
Resolving SDK alias 'latest' to '3.1.47'
Resolving SDK version '3.1.47' to 'sdk-releases-39ade279e75e6d17dd6b7eb9fba2006e61fe966b-64bit'
Installing SDK 'sdk-releases-39ade279e75e6d17dd6b7eb9fba2006e61fe966b-64bit'..
Installing tool 'node-16.20.0-64bit'..
Downloading: /home/du/code/emsdk/downloads/node-v16.20.0-linux-x64.tar.xz from https://storage.googleapis.com/webassembly/emscripten-releases-builds/deps/node-v16.20.0-linux-x64.tar.xz, 22559772 Bytes
Unpacking '/home/du/code/emsdk/downloads/node-v16.20.0-linux-x64.tar.xz' to '/home/du/code/emsdk/node/16.20.0_64bit'
Done installing tool 'node-16.20.0-64bit'.
Installing tool 'releases-39ade279e75e6d17dd6b7eb9fba2006e61fe966b-64bit'..
Downloading: /home/du/code/emsdk/downloads/39ade279e75e6d17dd6b7eb9fba2006e61fe966b-wasm-binaries.tar.xz from https://storage.googleapis.com/webassembly/emscripten-releases-builds/linux/39ade279e75e6d17dd6b7eb9fba2006e61fe966b/wasm-binaries.tar.xz, 264380728 Bytes
Unpacking '/home/du/code/emsdk/downloads/39ade279e75e6d17dd6b7eb9fba2006e61fe966b-wasm-binaries.tar.xz' to '/home/du/code/emsdk/upstream'
Done installing tool 'releases-39ade279e75e6d17dd6b7eb9fba2006e61fe966b-64bit'.
Done installing SDK 'sdk-releases-39ade279e75e6d17dd6b7eb9fba2006e61fe966b-64bit'.
Resolving SDK alias 'latest' to '3.1.47'
Resolving SDK version '3.1.47' to 'sdk-releases-39ade279e75e6d17dd6b7eb9fba2006e61fe966b-64bit'
Setting the following tools as active:
   node-16.20.0-64bit
   releases-39ade279e75e6d17dd6b7eb9fba2006e61fe966b-64bit

Next steps:
- To conveniently access emsdk tools from the command line,
  consider adding the following directories to your PATH:
    /home/du/code/emsdk
    /home/du/code/emsdk/upstream/emscripten
- This can be done for the current shell by running:
    source "/home/du/code/emsdk/emsdk_env.sh"
- Configure emsdk in your shell startup scripts by running:
    echo 'source "/home/du/code/emsdk/emsdk_env.sh"' >> $HOME/.bash_profile
Setting up EMSDK environment (suppress these messages with EMSDK_QUIET=1)
Adding directories to PATH:
PATH += /home/du/code/emsdk
PATH += /home/du/code/emsdk/upstream/emscripten

Setting environment variables:
PATH = /home/du/code/emsdk:/home/du/code/emsdk/upstream/emscripten:/opt/go-go1.4//bin:/opt/gcc-arm-none-eabi-4_9-2015q3/bin:/home/du/opt/gflags-2_2_2/bin:/home/du/opt/gflags-2_2_2/sbin:/home/du/opt/glog-0_6_0/bin:/home/du/opt/glog-0_6_0/sbin:/home/du/opt/opencv-3_4_19/bin:/home/du/opt/opencv-3_4_19/sbin:/home/du/opt/hdf5-hdf5-1_12_2/bin:/home/du/opt/hdf5-hdf5-1_12_2/sbin:/home/du/opt/OpenBLAS-0_3.23/bin:/home/du/opt/OpenBLAS-0_3.23/sbin:/home/du/opt/snappy-1_1_10/bin:/home/du/opt/snappy-1_1_10/sbin:/home/du/opt/liblmdb/bin:/home/du/opt/liblmdb/sbin:/home/du/opt/leveldb-1_23/bin:/home/du/opt/leveldb-1_23/sbin:/home/du/opt/protobuf-3_21_9/bin:/home/du/opt/protobuf-3_21_9/sbin:/home/du/opt/boost_1_74_0/bin:/home/du/opt/boost_1_74_0/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/opt/dotnet5::/home/du/.dotnet/tools:/opt/010editor:/opt/go-go1.4//src/gopath/bin
EMSDK = /home/du/code/emsdk
EMSDK_NODE = /home/du/code/emsdk/node/16.20.0_64bit/bin/node
~/code
~/code/hello ~/code
Setting up EMSDK environment (suppress these messages with EMSDK_QUIET=1)
Setting environment variables:
shared:INFO: (Emscripten: Running sanity checks)
cache:INFO: generating system asset: symbol_lists/c801a3fe030388ef306c84a0bf315b75877a0c31.json... (this will be cached in "/home/du/code/emsdk/upstream/emscripten/cache/symbol_lists/c801a3fe030388ef306c84a0bf315b75877a0c31.json" for subsequent builds)
cache:INFO:  - ok
Hello world!