From 9320aeb28bb639b99d3bd3545568334237d76fee Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Wed, 27 Oct 2021 22:58:19 +0200
Subject: [PATCH 1/3] Enable use of ccache for Unix CI builds

This should speed up build step for the common case when not too many
files have to be recompiled.
---
 .github/workflows/ci.yml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7a309fbdb5..68ad4c8c35 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -111,6 +111,11 @@ jobs:
         with:
           submodules: 'recursive'
 
+      - name: Install CCache
+        uses: hendrikmuhs/ccache-action@v1
+        with:
+          key: ${{ matrix.name }}
+
       - name: Set up build system
         run: |
           echo LD_LIBRARY_PATH=`pwd`/lib >> $GITHUB_ENV
@@ -118,6 +123,8 @@ jobs:
           wxPROC_COUNT=`./build/tools/proc_count.sh`
           echo wxBUILD_ARGS=-j$wxPROC_COUNT >> $GITHUB_ENV
 
+          echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
+
           # Setting this variable suppresses "Error retrieving accessibility bus address"
           # messages from WebKit tests that we're not interested in.
           echo NO_AT_BRIDGE=1 >> $GITHUB_ENV

From 6e96c6dda0d8cf25629ea08e048e7c4c19cd7619 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Wed, 27 Oct 2021 23:32:16 +0200
Subject: [PATCH 2/3] Add "Show build environment" step

Show version of compiler and ccache being used.
---
 .github/workflows/ci.yml | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 68ad4c8c35..7cc5eca3fa 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -116,7 +116,7 @@ jobs:
         with:
           key: ${{ matrix.name }}
 
-      - name: Set up build system
+      - name: Set up build environment
         run: |
           echo LD_LIBRARY_PATH=`pwd`/lib >> $GITHUB_ENV
 
@@ -162,6 +162,20 @@ jobs:
 
           ./build/tools/before_install.sh
 
+      - name: Show build environment
+        run: |
+          echo "Environment:"
+          env | sort
+          echo
+
+          echo "Compiler version:"
+          ${CXX-g++} --version
+          echo
+
+          echo "Ccache version:"
+          ccache --version
+          echo
+
       - name: Configuring
         run: |
           wxCONFIGURE_OPTIONS="--disable-optimise $wxCONFIGURE_FLAGS"

From cd385cf22d2b8e4f762cdb543c2fee91b6cff529 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Tue, 9 Nov 2021 13:28:19 +0100
Subject: [PATCH 3/3] Trivial change to test rebuilding using ccache

Change the workflow file to trigger rebuild without affecting the other
builds.
---
 .github/workflows/ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7cc5eca3fa..97aa31a290 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -172,7 +172,7 @@ jobs:
           ${CXX-g++} --version
           echo
 
-          echo "Ccache version:"
+          echo "ccache version:"
           ccache --version
           echo