Fix ccache in Github Actions

.github/workflows/linux.yml

@@ -56,24 +56,25 @@ jobs:
         sudo apt install -y ccache ninja-build
         export PATH=/usr/lib/ccache:${{ runner.temp }}/arm-gcc/bin/:/home/runner/.local/bin:$PATH
         for i in ${{ runner.temp }}/arm-gcc/bin/* ; do sudo ln -s /usr/bin/ccache /usr/lib/ccache/$(basename $i); done
-        ccache --set-config=cache_dir="$GITHUB_WORKSPACE"
         ccache --set-config=cache_dir="$GITHUB_WORKSPACE/.ccache"
         ccache --set-config=max_size=2Gi
-        ccache -z -s
         arm-none-eabi-gcc -v | tee log.txt
-        (git status; git log -1 )>> log.txt
+        (git status; git log -1)>> log.txt
 
     - name: Cache CCache
       id:   ccache
       uses: actions/cache@v2
       with:
         path: .ccache
         key: ${{ runner.os }}-ccache-${{ hashFiles('log.txt') }}
-        restore-keys: ${{ runner.os }}-ccache-
+        restore-keys: |
+          ${{ runner.os }}-ccache-${{ hashFiles('log.txt') }}
+          ${{ runner.os }}-ccache-
 
     - name: Compile
       run:  |
         export PATH="/usr/lib/ccache:${{ runner.temp }}/arm-gcc/bin/:/home/runner/.local/bin:$PATH"
+        ccache -z -s
         python tools/progen_compile.py --release --parallel -v
         (ls -lR firmware_*; ccache -s; arm-none-eabi-gcc -v) | tee log.txt
         mkdir bootloaders