+Options:
+
+* `BUILD_RADIANT=OFF`
+ Do not build NetRadiant (default: `ON`, build netradiant graphical editor);
+* `BUILD_TOOLS=OFF`
+ Do not build q3map2 and other tools (default: `ON`, build command line tools);
+* `BUILD_CRUNCH=OFF`
+ Disable crunch support (default: `ON` if submodule is there, enable crunch support);
+* `RADIANT_ABOUTMSG="Custom build by $(whoami)"`
+ A message shown in the about dialog (default: `Custom build`).
+
+Targets:
+
+* `binaries` Compile all binaries;
+ - `netradiant` Compile the netradiant editor;
+ - `modules` Compile all modules (each module has its own target as well);
+ - `plugins` Compile all plugins (each plugin has its own target as well);
+ - `tools` Compile all tools (each tool has its own target as well);
+ * `quake2` Compile all the Quake 2 tools: `q2map`, `qdata3`;
+ * `heretic2` Compile all the Heretic2 tools: `q2map`, `h2data`;
+ * `quake3` Compile all the Quake 3 tools:
+ - `q3map2` Compile the Quake 3 map compiler;
+ - `q3data` Compile the q3data tool;
+
+Type `make help` to get an exhaustive list of targets.
+
+
+#### Download details
+
+Options:
+
+* `DOWNLOAD_GAMEPACKS=OFF`
+ Do not automatically download the gamepack data on each compilation and do not install already downloaded game packs (default: `ON`);
+* `GAMEPACKS_LICENSE_LIST=all`
+ Download all gamepacks whatever their license (default: `free`, download free gamepacks, can be set to `none` to only filter by name);
+* `GAMEPACKS_NAME_LIST="Xonotic Unvanquished"`
+ Download gamepacks for the given games (default: `none`, do not select more gamepacks to download).
+
+Target:
+
+* `gamepacks` Downloads the game pack data.
+
+Run `./gamepacks-manager -h` to know about available licenses and other available games. Both lists are merged, for example setting `GAMEPACKS_LICENSE_LIST=GPL` and `GAMEPACKS_NAME_LIST=Q3` will install both GPL gamepacks and the proprietary Quake 3 gamepack.
+
+
+#### Installation details
+
+Options:
+
+* `BUNDLE_LIBRARIES=ON`
+ Bundle libraries, only Linux, FreeBSD, macOS and MSYS2 are supported at this time (default: `OFF`);
+* `FHS_INSTALL=ON` (available on POSIX systems)
+ Install files following the Filesystem Hierarchy Standard (`bin`, `lib`, `share`, etc.)
+ Also setup XDG mime and application support on Linux-like systems (default: `OFF`, install like in 1999);
+* `CMAKE_INSTALL_PREFIX=/usr`
+ Install system-wide on Posix systems, always set `FHS_INSTALL` to `ON` when doing this (default: `install/` directory within source tree).
+
+Target:
+
+* `install` Install files.
+
+```sh
+cmake --install build
+```