JLS

If using WSL2 on Windows, you will run into this error when installing & starting mysql:

sudo su
root@DESKTOP-2NUPEGC:/home/mangos/build# mysql
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
root@DESKTOP-2NUPEGC:/home/mangos/build# sudo /etc/init.d/mysql start
 * Starting MySQL database server mysqld                                                                                No directory, logging in with HOME=/
mkdir: cannot create directory ‘//.cache’: Permission denied
-su: 19: /etc/profile.d/wsl-integration.sh: cannot create //.cache/wslu/integration: Directory nonexistent

This issue is noted here. To resolve this, follow this comment noted in the link:

Quote

The problem is with the script "/etc/profile.d/wsl-integration.sh". As a quick workaround insert the following line before the first line in "/etc/profile.d/wsl-integration.sh" (use sudo to edit the file):

# Check if we have HOME folder
if [[ "${HOME}" == "/" ]]; then
  exit 0
fi

I mean before the line:

WSL_INTEGRATION_CACHE=$HOME/.cache/wslu/integration`

Ubuntu 18.04 comes default with cmake 3.10.2. When running this command, you might receive this error:

cmake ../sources/ -DCMAKE_INSTALL_PREFIX=/opt/wow/install/mangos -DCONF_INSTALL_DIR=/opt/wow/install/mangos/conf


CMake Error at CMakeLists.txt:20 (cmake_minimum_required):
  CMake 3.12 or higher is required.  You are running version 3.10.2
-- Configuring incomplete, errors occurred!

To fix this, you can upgrade cmake to a newer version. For example, here are the commands to upgrade to 3.16.7:

cd ~/
mkdir tmp
cd tmp
wget https://cmake.org/files/v3.16/cmake-3.16.7-Linux-x86_64.tar.gz
tar zxvf cmake-3.16.7-Linux-x86_64.tar.gz
sudo mv cmake-3.16.7-Linux-x86_64     /opt/cmake-3.16.7
sudo ln -sf  /opt/cmake-3.16.7/bin/*    /usr/bin/
cmake --version
rm -rf ~/tmp/