Enable ccache for packages build (#6)

Author: Blackhex

.github/scripts/build-package.sh

@@ -20,8 +20,12 @@ ARGUMENTS="--syncdeps \
     $([ "$CLEAN_BUILD" = 1 ] && echo "--cleanbuild" || echo "") \
     $([ "$INSTALL_PACKAGE" = 1 ] && echo "--install" || echo "")"
 
+ccache -svv  || true
+
 if [[ "$PACKAGE_REPOSITORY" == *MINGW* ]]; then
     makepkg-mingw $ARGUMENTS --skippgpcheck
 else
     makepkg $ARGUMENTS
 fi
+
+ccache -svv || true

.github/scripts/enable-ccache.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -e # exit on error
+set -x # echo on
+set -o pipefail # fail of any command in pipeline is an error
+
+DIR="`dirname ${BASH_SOURCE[0]}`/../.."
+DIR=`realpath $DIR`
+if [[ -n "$GITHUB_WORKSPACE" ]]; then
+  echo "CCACHE_DIR=$DIR/ccache" >> "$GITHUB_ENV"
+  echo timestamp=$(date -u --iso-8601=seconds) >> "$GITHUB_OUTPUT"
+fi
+
+pushd /
+  echo "::group::/etc/makepkg.conf"
+    patch -p1 -b -i "$DIR/patches/ccache/0001-makepkg.patch"
+    cat /etc/makepkg.conf
+  echo "::endgroup::"
+
+  echo "::group::/etc/makepkg_mingw.conf"
+    patch -p1 -b -i "$DIR/patches/ccache/0002-makepkg-mingw.patch"
+    cat /etc/makepkg_mingw.conf
+  echo "::endgroup::"
+popd

.github/workflows/build-package.yml

@@ -48,6 +48,7 @@ jobs:
             mingw-w64-x86_64-github-cli \
             mingw-w64-x86_64-jq \
             base-devel \
+            ${{ contains(inputs.packages_repository, 'MINGW') && 'mingw-w64-cross-gcc mingw-w64-x86_64-ccache' || ' ccache' }} \
             ${{ inputs.dependencies }}
 
       - name: Download artifacts
@@ -73,10 +74,31 @@ jobs:
           sparse-checkout: ${{ inputs.package_name }}
           path: ${{ github.workspace }}/packages
 
+      - name: Enable Ccache
+        id: enable-ccache
+        run: |
+          `cygpath "${{ github.workspace }}"`/.github/scripts/enable-ccache.sh
+
+      - name: Restore Ccache
+        uses:  actions/cache/restore@v4
+        with:
+          path: ${{ github.workspace }}/ccache
+          key: main-ccache-${{ steps.enable-ccache.outputs.timestamp }}
+          restore-keys: main-ccache-
+
       - name: Build ${{ inputs.package_name }}
         working-directory: ${{ github.workspace }}/packages/${{ inputs.package_name }}
         run: |
+          ccache -svv  || true
           `cygpath "${{ github.workspace }}"`/.github/scripts/build-package.sh ${{ inputs.packages_repository }}
+          ccache -svv || true
+
+      - name: Save Ccache
+        if: always()
+        uses:  actions/cache/save@v4
+        with:
+          path: ${{ github.workspace }}/ccache
+          key: main-ccache-${{ steps.enable-ccache.outputs.timestamp }}
 
       - name: Upload ${{ inputs.package_name }}
         uses: actions/upload-artifact@v4

patches/ccache/0001-makepkg.patch

@@ -0,0 +1,11 @@
+--- a/etc/makepkg.conf
++++ b/etc/makepkg.conf
+@@ -63,7 +63,7 @@
+ #-- check:    Run the check() function if present in the PKGBUILD
+ #-- sign:     Generate PGP signature file
+ #
+-BUILDENV=(!distcc color !ccache check !sign)
++BUILDENV=(!distcc color ccache check !sign)
+ #
+ #-- If using DistCC, your MAKEFLAGS will also need modification. In addition,
+ #-- specify a space-delimited list of hosts running in the DistCC cluster.

patches/ccache/0002-makepkg-mingw.patch

@@ -0,0 +1,24 @@
+--- a/etc/makepkg_mingw.conf
++++ b/etc/makepkg_mingw.conf
+@@ -137,7 +137,7 @@
+ #-- check:    Run the check() function if present in the PKGBUILD
+ #-- sign:     Generate PGP signature file
+ #
+-BUILDENV=(!distcc color !ccache check !sign)
++BUILDENV=(!distcc color ccache check !sign)
+ #
+ #-- If using DistCC, your MAKEFLAGS will also need modification. In addition,
+ #-- specify a space-delimited list of hosts running in the DistCC cluster.
+--- a/usr/share/makepkg/buildenv/compiler.sh
++++ b/usr/share/makepkg/buildenv/compiler.sh
+@@ -34,8 +34,8 @@
+ 
+ buildenv_ccache() {
+ 	if check_buildoption "ccache" "y"; then
+-		if [ -d /usr/lib/ccache/bin ]; then
+-			export PATH="/usr/lib/ccache/bin:$PATH"
++		if [ -d ${MINGW_PREFIX:-/usr}/lib/ccache/bin ]; then
++			export PATH="${MINGW_PREFIX:-/usr}/lib/ccache/bin:$PATH"
+ 			using_ccache=1
+ 		fi
+ 	fi