CI: create ccache dir

maybe this is why it isn't working?

.github/workflows/ficus.yml

@@ -25,6 +25,9 @@ jobs:
       - name: Install dependencies
         run: sudo apt-get update && sudo apt-get install -y cmake build-essential pax gcc g++ nasm bison bzip2 flex mtools texinfo libgmp-dev libmpfr-dev libmpc-dev xorriso ccache
 
+      - name: Create ccache dir
+        run: mkdir ~/ccache-cache
+
       - name: CCache cache
         id: cache-ccache
         uses: actions/cache@v4
@@ -39,6 +42,7 @@ jobs:
         run: |
           ccache -p
           which gcc
+          which g++
 
       - name: Cache generic toolchain
         id: cache-toolchain
@@ -108,10 +112,11 @@ jobs:
         id: cache-toolchain-s2
         uses: actions/cache/restore@v4
         env:
-          cache-name: cache-toolchain-s2
+          cache-name: cache-toolchain-s2-v2
         with:
           path: |
             toolchain/gcc-x86_64-ficus-prefix
+            sysroot
           key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('ficus-toolchain/*.sh') }}-${{ hashFiles('ficus-toolchain/newlib/newlib-4.4.0.20231231/**') }}
 
       - if: ${{ steps.cache-toolchain-s2.outputs.cache-hit != 'true' }}
@@ -122,10 +127,11 @@ jobs:
         id: cache-toolchain-s2-save
         uses: actions/cache/save@v4
         env:
-          cache-name: cache-toolchain-s2
+          cache-name: cache-toolchain-s2-v2
         with:
           path: |
             toolchain/gcc-x86_64-ficus-prefix
+            sysroot
           key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('ficus-toolchain/*.sh') }}-${{ hashFiles('ficus-toolchain/newlib/newlib-4.4.0.20231231/**') }}
 
       - name: Tar the toolchain