From 4ecb8ba0cc828defad6f4278fac8998ab48a0b23 Mon Sep 17 00:00:00 2001
From: Michał Sawicz <michal@sawicz.net>
Date: Wed, 6 Jan 2021 18:06:17 +0100
Subject: [snap] enable ccache in Linux Snap workflow
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Also adding `push` to triggering events to populate the cache.

Signed-off-by: Michał Sawicz <michal@sawicz.net>
---
 .github/workflows/linux-snap.patch | 44 ++++++++++++++++++++++++++++++++++++++
 .github/workflows/linux-snap.yml   | 25 ++++++++++++++++++++++
 2 files changed, 69 insertions(+)
 create mode 100644 .github/workflows/linux-snap.patch

diff --git a/.github/workflows/linux-snap.patch b/.github/workflows/linux-snap.patch
new file mode 100644
index 000000000..67b270006
--- /dev/null
+++ b/.github/workflows/linux-snap.patch
@@ -0,0 +1,44 @@
+--- a/snap/snapcraft.yaml
++++ b/snap/snapcraft.yaml
+@@ -32,6 +32,7 @@ parts:
+   googlemaps:
+     source: git://github.com/Subsurface/googlemaps.git
+     build-packages:
++    - ccache
+     - wget
+     override-pull: |
+       snapcraftctl pull
+@@ -75,6 +76,8 @@ parts:
+     plugin: qmake
+     options:
+     - INCLUDEPATH+=QtHeaders
++    - QMAKE_CC=ccache gcc
++    - QMAKE_CXX=ccache g++
+ 
+   desktop-qt5:
+     source: https://github.com/ubuntu/snapcraft-desktop-helpers.git
+@@ -105,7 +108,11 @@ parts:
+     source: .
+     source-type: git
+     source-subdir: libdivecomputer
++    configflags:
++    - CC=ccache gcc
++    - CXX=ccache g++
+     build-packages:
++    - ccache
+     - libbluetooth-dev
+     - libhidapi-dev
+     - libusb-dev
+@@ -127,9 +134,12 @@ parts:
+     - -DLIBGIT2_DYNAMIC=ON
+     - -DFTDISUPPORT=ON
+     - -DLIBDIVECOMPUTER_LIBRARIES=../../../stage/lib/libdivecomputer.so
++    - -DCMAKE_C_COMPILER_LAUNCHER=ccache
++    - -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
+     source-type: git
+     build-packages:
+     - build-essential
++    - ccache
+     - libcurl4-gnutls-dev
+     - libftdi1-dev
+     - libgit2-dev
diff --git a/.github/workflows/linux-snap.yml b/.github/workflows/linux-snap.yml
index e1718c55d..325318c0a 100644
--- a/.github/workflows/linux-snap.yml
+++ b/.github/workflows/linux-snap.yml
@@ -28,11 +28,36 @@ jobs:
         # Needed for version determination to work
         fetch-depth: 0
 
+    - name: Set up CCache
+      id: setup-ccache
+      run: |
+        sudo apt-get install ccache
+        ccache --max-size=2G
+        sg lxd -c '/snap/bin/lxc profile device add default ccache disk source=${HOME}/.ccache/ path=/root/.ccache'
+
+        # Patch snapcraft.yaml to enable ccache
+        patch -p1 < .github/workflows/linux-snap.patch
+
+        # Find common base between master and HEAD to use as cache key.
+        git -c protocol.version=2 fetch --no-tags --prune --progress --no-recurse-submodules origin master
+        echo "::set-output name=key::$( git merge-base origin/master ${{ github.sha }} )"
+
+    - name: CCache
+      uses: actions/cache@v2
+      with:
+        key: ccache-${{ runner.os }}-${{ steps.setup-ccache.outputs.key }}
+        restore-keys: |
+          ccache-${{ runner.os }}-
+        path: ~/.ccache/**
+
     - name: Build
       run: |
         # Build the `subsurface` part.
         sg lxd -c '/snap/bin/snapcraft build --use-lxd subsurface'
 
+    - name: Clear CCache stats
+      run: ccache --show-stats --zero-stats
+
     - name: Build and verify the snap
       id: build-snap
       env:
-- 
cgit v1.2.3-70-g09d2