Bump CMake min version for IBIze and clean up build files

README.md

@@ -6,34 +6,36 @@ the GNU GPLv2 license.
 
 ## Building the code
 
-The OpenJK tools use CMake to generate the project files or makefiles for the
-source code. The project files or makefiles can then be used to compile the
-source code.
+IBIze is being built using CMake and generated Makefiles. This works on all
+platforms, including Windows, Linux and MacOS.
+
+ModView and Assimilate are Visual Studio projects and as such only work on
+Windows.
 
 
 ### Windows
 
 Generate the project files either by following the Linux and macOS instructions
-or by using the CMake GUI. For the CMake GUI, the source directory should be
-the root of the repository. The build directory is a directory of your choice
-where the project files will be generated.
+or by using the CMake GUI. For the CMake GUI, the source directory should be the
+`ibize` directory in this repository. The build directory is a directory of your
+choice where the project files will be generated, e.g. `ibize/build/`.
 
 Load the generated project file (likely to be a Visual Studio project), and
 then build in the IDE.
 
 
 ### Linux and macOS
 
-Generate the makefiles by running:
+Generate the makefiles (for IBIze only) by running:
 ```bash
+cd ibize
 mkdir build
 cd build
 cmake ..
 ```
 
-Compile the code:
+Compile the code, while being in `ibize/build/`:
 ```bash
-cd build
 make
 ```
 

ibize/CMakeLists.txt

@@ -1,3 +1,8 @@
+cmake_minimum_required(VERSION 3.1...3.31)
+project(IBIze)
+
+set(CMAKE_CXX_STANDARD 11)
+
 add_executable(ibize
 	blockstream.cpp
 	ibize.cpp