From 27db22b96f67302710e286ec885089a3567c3f54 Mon Sep 17 00:00:00 2001
From: CptMoore <39010654+cptmoore@users.noreply.github.com>
Date: Sun, 4 Feb 2024 09:35:18 +0100
Subject: [PATCH] Added build caching

---
 .github/workflows/build.yml          |  2 ++
 .github/workflows/build_language.yml | 21 +++++++++++++++++++--
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c25feead..2f3d07f1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -169,6 +169,8 @@ jobs:
     with:
       language: ${{ matrix.language }}
       assemble: ${{ needs.workflow_setup.outputs.assemble_release == 'true' }}
+      # TODO check if English and German build faster for code changes on master, if not remove caching
+      build-cache-enabled: ${{ matrix.language == 'English' || matrix.language == 'German' }}
       # at least English and some other lang have to work
       continue-on-error: ${{ matrix.language != 'English' && matrix.language != 'German' }}
 
diff --git a/.github/workflows/build_language.yml b/.github/workflows/build_language.yml
index 1b7d6ee4..07684fcc 100644
--- a/.github/workflows/build_language.yml
+++ b/.github/workflows/build_language.yml
@@ -13,6 +13,11 @@ on:
         required: true
         default: true
         type: boolean
+      build-cache-enabled:
+        description: 'enable sscache'
+        required: true
+        default: false
+        type: boolean
       continue-on-error:
         description: 'allows a language to fail, used when building all languages'
         required: false
@@ -27,6 +32,8 @@ jobs:
       fail-fast: false
       matrix:
         application: [ja2, ja2mapeditor, ja2ub, ja2ubmapeditor]
+    env:
+      SCCACHE_GHA_ENABLED: ${{ inputs.build-cache-enabled }}
 
     steps:
       - name: Checkout source
@@ -75,9 +82,19 @@ jobs:
       - uses: ilammy/msvc-dev-cmd@v1
         with:
           arch: x86
+      - name: Prepare build cache
+        if: ${{ inputs.build-cache-enabled }}
+        uses: hendrikmuhs/ccache-action@v1
+        with:
+          key: ${{ inputs.language }}_${{ matrix.application }}
+          save: ${{ github.ref == 'refs/heads/master' }}
+          variant: sccache
       - name: Prepare build
-        run: |
-          cmake -S . -B build -GNinja -DCMAKE_BUILD_TYPE=Release -DLanguages="$Env:JA2Language" -DApplications="$Env:JA2Application"
+        run: >
+          cmake -S . -B build -GNinja
+          -DCMAKE_C_COMPILER_LAUNCHER=sccache -DCMAKE_CXX_COMPILER_LAUNCHER=sccache
+          -DCMAKE_BUILD_TYPE=Release
+          -DLanguages="$Env:JA2Language" -DApplications="$Env:JA2Application"
       - name: Build
         run: |
           cmake --build build/ -- -v