Building and running Redivivus

source: docs/building.md @ 1b1c2d3

This is the build that delivers a runnable d2.exe today, with a modern compiler. To compile with the compilers that built the original, Visual C++ 2005 SP1 and Apple LLVM 4.2, with their flags, see original-compilers.md.

You need

Your own installation of Diablo II: Lord of Destruction, version 1.14. This repository contains no game data and no Blizzard binaries; the executable reads the MPQ archives from your installation. If you have no installation at hand, blizzard-legacy-dl downloads the installers from Blizzard's own servers:
sh
```
blizzard-legacy-dl fetch D2DV -o ./d2     # Diablo II
blizzard-legacy-dl fetch D2XP -o ./d2     # Lord of Destruction
```
You still need your own CD keys to install.
To build: a mingw-w64 cross compiler for 32-bit Windows (i686-w64-mingw32-g++), CMake and Ninja.
- macOS: brew install mingw-w64 cmake ninja
- Debian/Ubuntu: apt install g++-mingw-w64-i686 cmake ninja-build
- Windows: an MSYS2 MinGW32 shell

Build

cmake -S . -B build -G Ninja -DCMAKE_TOOLCHAIN_FILE=cmake/mingw-i686.cmake
cmake --build build

That produces build/d2.exe, a 32-bit Windows executable. tools/check-build.sh does the same from a clean clone and checks the result; CI runs it on every push.

Run

Copy d2.exe into your Diablo II folder, next to the original Game.exe, and start it from there:

text

d2.exe -w

-w runs it in a window.