Update required CMake version to 3.17.2 (microsoft#5418)

The SPIR-V-Tools project requires 3.17.2. To simplify our project dependencies we should just require that everywhere. 3.17.2 was released in May 2020, so it is now over three years old. Fixes microsoft#2616.
Keenuts · Jul 25, 2023 · 3c06afb · 3c06afb
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diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,5 +1,5 @@
 # See docs/CMake.html for instructions about how to build LLVM with CMake.
-cmake_minimum_required(VERSION 3.10) # HLSL Change - Require CMake 3.10.
+cmake_minimum_required(VERSION 3.17.2) # HLSL Change - Require CMake 3.17.2.
 
 if (NOT "${DXC_CMAKE_BEGINS_INCLUDE}" STREQUAL "")
   include(${DXC_CMAKE_BEGINS_INCLUDE})

diff --git a/README.md b/README.md
@@ -47,7 +47,7 @@ Building DXC requires:
 
 * [Git](http://git-scm.com/downloads).
 * [Python](https://www.python.org/downloads/) - version 3.x is required
-* [CMake](https://cmake.org/download/) - version >= 3.10
+* [CMake](https://cmake.org/download/) - version >= 3.17.2
     * The bundled version with Visual Studio works for Windows.
 * The C++ 14 compiler and runtime of your choosing.
     * DXC is known to compile with recent versions of GCC, Clang and MSVC.