chore(vcpkg): add lockfile and gha binary cache

Author: bobtista

.github/workflows/build-toolchain.yml

@@ -31,6 +31,9 @@ jobs:
     name: ${{ inputs.preset }}${{ inputs.tools && '+t' || '' }}${{ inputs.extras && '+e' || '' }}
     runs-on: windows-2022
     timeout-minutes: 20
+    env:
+      VCPKG_BINARY_SOURCES: clear;x-gha,readwrite
+      VCPKG_FEATURE_FLAGS: manifests,versions,binarycaching
     steps:
       - name: Checkout Code
         uses: actions/checkout@v4

README.md

@@ -65,6 +65,14 @@ We provide support for building the project using Visual Studio 6 (VS6) and Visu
 instructions, check the [Wiki](https://github.com/TheSuperHackers/GeneralsGameCode/wiki/build_guides), which also
 includes guides for building with Docker, CLion, and links to forks supporting additional versions.
 
+### Dependency management
+
+The repository uses a vcpkg manifest (`vcpkg.json`) paired with a lockfile (`vcpkg-lock.json`). When you add or upgrade
+dependencies, run `vcpkg install --x-manifest-root . --triplet <triplet>` with `VCPKG_FEATURE_FLAGS=versions` so the
+lockfile picks up the new versions and include the updated lockfile in your change. GitHub Actions consumes these ports
+through `VCPKG_BINARY_SOURCES=clear;x-gha,readwrite`, so the first CI build warms the cache and subsequent builds pull
+prebuilt binaries instead of re-compiling everything.
+
 ## Contributing
 
 We welcome contributions to the project! If you’re interested in contributing, you need to have knowledge of C++. Join

vcpkg-lock.json

@@ -0,0 +1,48 @@
+{
+    "version": 1,
+    "dependencies": [
+        {
+            "name": "ffmpeg",
+            "version-string": "7.1.1",
+            "port-version": 1,
+            "git-tree": "6ff75f1f596ada519241989f44077cda442480b2"
+        },
+        {
+            "name": "pkgconf",
+            "version-string": "2.3.0",
+            "port-version": 0,
+            "git-tree": "ae3886d8a627ec99dd18890389b6d5d331e29799"
+        },
+        {
+            "name": "vcpkg-cmake",
+            "version-string": "2024-04-23",
+            "port-version": 0,
+            "git-tree": "e74aa1e8f93278a8e71372f1fa08c3df420eb840"
+        },
+        {
+            "name": "vcpkg-cmake-get-vars",
+            "version-string": "2024-09-22",
+            "port-version": 0,
+            "git-tree": "f23148add155147f3d95ae622d3b0031beb25acf"
+        },
+        {
+            "name": "vcpkg-pkgconfig-get-modules",
+            "version-string": "2024-04-03",
+            "port-version": 0,
+            "git-tree": "6845369c8cb7d3c318e8e3ae92fd2b7570a756ca"
+        },
+        {
+            "name": "vcpkg-tool-meson",
+            "version-string": "1.6.1",
+            "port-version": 0,
+            "git-tree": "dc948c67d7f1359319f801078422e996b0a89fd0"
+        },
+        {
+            "name": "zlib",
+            "version-string": "1.3.1",
+            "port-version": 0,
+            "git-tree": "3f05e04b9aededb96786a911a16193cdb711f0c9"
+        }
+    ]
+}
+