wolfSSL with WSL (Windows Subsystem for Linux)

    • Microsoft has created a Linux subsystem that allows running Linux distributions on Windows 10. This blog describes the steps for building and running wolfSSL on WSL.

    Installing WSL and Ubuntu 18.04:

    1. Open PowerShell as Administrator (right-click and choose “Run as Administrator”)
    2. Run the following commands:
      1. Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux
      2. Invoke-WebRequest -Uri https://aka.ms/wsl-ubuntu-1804 -OutFile Ubuntu.appx -UseBasicParsing
      3. Add-AppxPackage .\Ubuntu.appx
    3. Start -> Ubuntu 18.04 (should be at the top of the start menu)
    4. Installing, this may take a few minutes…
    5. Choose username and password
    6. Update Ubuntu:
      1. sudo apt update
      2. sudo apt upgrade

    Building wolfSSL:

    1. Install prerequisites
      1. sudo apt-get install autoconf libtool make execstack
    2. git clone https://github.com/wolfSSL/wolfssl.git
    3. cd wolfssl
    4. ./autogen.sh
    5. ./configure
    6. make
    7. make check

    Enabling Intel Speedups and Running Benchmarks:

    1. ./configure –enable-intelasm –enable-aesni –enable-sp –enable-sp-asm
    2. make
    3. WSL does not currently have support for the PROT_GROWSDOWN flag. Manually clear the executable stack flag in the library:
      1. execstack -c ./src/.libs/libwolfssl.so
    4. ./wolfcrypt/benchmark/benchmark