Tested on:

• 2020-07-25 on Slackware64-current with kernel 5.4.53.
• 2021-06-19 on Obarun Linux (Arch based) with clang 12 and kernel 5.12.11.
• 2021-11-27 on PCLinuxOS 2021 with clang 12.0.1.

1. Create the compile directory:

   mkdir -p ~/compile/games/SeriousSam/

2. Change to the compile directory:

   cd ~/compile/games/SeriousSam/

3. Clone the ptitSeb/Serious-Engine repository into ptitSeb_Serious-Engine:

   git clone https://github.com/ptitSeb/Serious-Engine ptitSeb_Serious-Engine

4. Change to the source directory:

   cd ~/compile/games/SeriousSam/ptitSeb_Serious-Engine/Sources/

5. Compile:
   1. For Obarun/Arch force use of gcc/g++ 10 (as gcc 11 won't compile):

      pacman -Su gcc10 
      export CC=gcc-10
      export CXX=g++-10

   2. For PCLinuxOS 2021 use clang++ as g++ 11 won´t compile:

      export CXX=clang++

   3. For The Second Encounter:

      ./build-linux64.sh

   4. For The First Encounter:

      ./build-linux64.sh -DTFE=TRUE

6. Create the directory for the game files:
   1. For The Second Encounter:

      mkdir -p ~/games/SeriousSam/TSE/Bin

   2. For The First Encounter:

      mkdir -p ~/games/SeriousSam/TFE/Bin

7. Copy the compiled executables, .so files, and .gro file:
   1. For The Second Encounter:

      cp -p cmake-build/ssam ~/games/SeriousSam/TSE/Bin/
      cp -p cmake-build/Ecc/ecc ~/games/SeriousSam/TSE/Bin/
      cp -p cmake-build/Debug/* ~/games/SeriousSam/TSE/Bin/
      cp -p ../SE1_10.gro ~/games/SeriousSam/TSE/

   2. For The First Encounter:

      cp -p cmake-build/ssam-tfe ~/games/SeriousSam/TFE/Bin/
      cp -p cmake-build/Ecc/ecc ~/games/SeriousSam/TFE/Bin/
      cp -p cmake-build/Debug/* ~/games/SeriousSam/TFE/Bin/
      cp -p ../SE1_10.gro ~/games/SeriousSam/TFE/

8. Copy the game files (in this case from a Windows 64-bit Wine prefix with Steam):
   1. The Second Encounter:

      rsync -av ~/.wine64/drive_c/Program\ Files\ \(x86\)/Steam/steamapps/common/Serious\ Sam\ Classic\ The\ Second\ Encounter/ ~/games/SeriousSam/TSE/

   2. The First Encounter:

      rsync -av ~/.wine64/drive_c/Program\ Files\ \(x86\)/Steam/steamapps/common/Serious\ Sam\ Classic\ The\ First\ Encounter/ ~/games/SeriousSam/TFE/

9. Start the game:
   1. The Second Encounter:

      cd ~/games/SeriousSam/TSE/Bin/
      ./ssam

   2. The First Encounter:

      cd ~/games/SeriousSam/TFE/Bin/
      ./ssam-tfe