Project now buildable without Visual Studio on windows

VCPKG_ROOT environment variable needs to be set.
I had an issue with dumpbin not being found. I had to add it to my path as well.

CMakeLists.txt

@@ -1,4 +1,13 @@
 cmake_minimum_required(VERSION 3.14)
+
+if(DEFINED ENV{VCPKG_ROOT})
+    set(VCPKG_TARGET_TRIPLET "x64-windows")
+    if(NOT DEFINED CMAKE_TOOLCHAIN_FILE)
+        set(CMAKE_TOOLCHAIN_FILE "$ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake"
+            CACHE STRING "")
+    endif()
+endif()
+
 project(tests_opengl)
 
 set(CMAKE_CXX_STANDARD 14)

README.md

@@ -20,7 +20,12 @@ As this project evolves I am thinking more and more about making it a "complete"
  - [ ] Detect key press' edges ?
  - [ ] Switch from GLUT to GLFW
 
-## Dependencies
+## Building
+The windows build supports only supports the `vcpkg` package manager. You can either import the project directly in Visual Studio or use another IDE.
+In order to use another IDE with vcpkg, make sure of the following:
+ - `VCPKG_ROOT` is an environment variable and correctly points at the root of your vcpkg install.
+ 
+### Dependencies
 
 The following libraries must be installed and findable by CMake:
  - OpenGL