Set up a vcpkg binary cache using GitHub Actions Cache (#174)

* Try to use cache

* Oops, wrong env placement

* Check

* All done and ready for merging

And kind thanks to @rfomin for advice!

Co-Authored-By: Roman Fomin <rfomin@gmail.com>

* Bump CMake version to 3.15

---------

Co-authored-by: Roman Fomin <rfomin@gmail.com>

.github/workflows/main.yml

@@ -11,10 +11,19 @@ on:
 jobs:
   build-windows:
     runs-on: windows-latest
+    env:
+      VCPKG_BINARY_SOURCES: "clear;x-gha,readwrite"
     steps:
       - name: Check out repository
         uses: actions/checkout@v4
 
+      - name: Export GitHub Actions cache environment variables
+        uses: actions/github-script@v7
+        with:
+          script: |
+            core.exportVariable('ACTIONS_CACHE_URL', process.env.ACTIONS_CACHE_URL || '');
+            core.exportVariable('ACTIONS_RUNTIME_TOKEN', process.env.ACTIONS_RUNTIME_TOKEN || '');
+
       - name: Get latest VCPKG commit
         shell: bash
         run: |

CMakeLists.txt

@@ -1,6 +1,6 @@
 set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 
-cmake_minimum_required(VERSION 3.10)
+cmake_minimum_required(VERSION 3.15)
 cmake_policy(SET CMP0069 NEW)
 cmake_policy(SET CMP0091 NEW)
 project("Inter" VERSION 8.1.0 LANGUAGES C)