Compile Godot using MinGW and generate Windows installers using InnoSetup (from Linux)

godot_mingw.sh

#!/bin/sh

set -euo pipefail

# Number of CPU threads to use for building
# Use `./godot_mingw.sh <number of threads>` to specify
THREADS=$1

# Godot Git clone path
GODOT_PATH="$HOME/Documents/Git/godotengine/godot"

# Godot InnoSetup files path
INSTALLER_PATH="$HOME/windows-installer"

# InnoSetup compiler path (requires WINE)
ISCC="$HOME/innosetup/ISCC.exe"

# Destination paths
EDITOR_PATH="$HOME/.godot/editor/3.0-alpha"
TEMPLATES_PATH="$HOME/.godot/templates/3.0-alpha"

cd "$GODOT_PATH"

# Clean up stuff before starting
# WARNING: This removes all untracked files in the Godot Git clone!
#git clean -dfx
#rm -rf "$GODOT_PATH/bin"
mkdir -p "$GODOT_PATH/bin"

# Create required directories
mkdir -p "$EDITOR_PATH" "$TEMPLATES_PATH"

# Build Godot
# Set the 2nd command-line argument to anything to disable building (and only generate installers)
if [ -z ${2+x} ]; then
  git pull
  scons platform=windows bits=64 tools=yes target=release_debug use_lto=yes -j$THREADS
  scons platform=windows bits=64 tools=no target=release_debug use_lto=yes -j$THREADS
  scons platform=windows bits=64 tools=no target=release use_lto=yes -j$THREADS

  scons platform=windows bits=32 tools=yes target=release_debug use_lto=yes -j$THREADS
  scons platform=windows bits=32 tools=no target=release_debug use_lto=yes -j$THREADS
  scons platform=windows bits=32 tools=no target=release use_lto=yes -j$THREADS
fi

# Generate Windows installers using InnoSetup
# `godot.iss` can be found at <https://gist.github.com/Calinou/6f71d50cfc77b4a3967d1ccafa44d2c4>
cd "$INSTALLER_PATH"
cp "$GODOT_PATH/bin/godot.windows.opt.tools.64.exe" "godot.exe"
wine "$ISCC" "godot.iss"
cp "$GODOT_PATH/bin/godot.windows.opt.tools.32.exe" "godot.exe"
wine "$ISCC" "godot.iss" /DApp32Bit

# Copy installers to distribution directory
cp "$INSTALLER_PATH/Output/godot-windows-installer-x86_64.exe" "$EDITOR_PATH"
cp "$INSTALLER_PATH/Output/godot-windows-installer-x86.exe" "$EDITOR_PATH"