Update c-cpp.yml

.github/workflows/c-cpp.yml

@@ -18,7 +18,8 @@ jobs:
     - name: Install cmake
       uses: lukka/get-cmake@v3.18.0
 
-    - name: Cache Embedded Arm Toolchain
+    - name: Check Cache for Embedded Arm Toolchain arm-none-eabi-gcc
+      id:   cache-toolchain
       uses: actions/cache@v2
       env:
         cache-name: cache-toolchain
@@ -28,6 +29,7 @@ jobs:
         restore-keys: ${{ runner.os }}-build-${{ env.cache-name }}
 
     - name: Install Embedded Arm Toolchain arm-none-eabi-gcc
+      if:   steps.cache-toolchain.outputs.cache-hit != 'true'  # Install toolchain if not found in cache
       uses: fiam/arm-none-eabi-gcc@v1.0.2
       with:
         # GNU Embedded Toolchain for Arm release name, in the V-YYYY-qZ format (e.g. "9-2019-q4")
@@ -35,7 +37,8 @@ jobs:
         # Directory to unpack GCC to. Defaults to a temporary directory.
         directory: ${{ runner.temp }}/arm-none-eabi
 
-    - name: Cache nRF5 SDK
+    - name: Check Cache for nRF5 SDK
+      id:   cache-nrf5sdk
       uses: actions/cache@v2
       env:
         cache-name: cache-nrf5sdk
@@ -45,6 +48,7 @@ jobs:
         restore-keys: ${{ runner.os }}-build-${{ env.cache-name }}
           
     - name: Install nRF5 SDK
+      if:   steps.cache-nrf5sdk.outputs.cache-hit != 'true'  # Install SDK if not found in cache
       run:  cd ${{ runner.temp }} && curl https://developer.nordicsemi.com/nRF5_SDK/nRF5_SDK_v15.x.x/nRF5_SDK_15.3.0_59ac345.zip -o nrf5_sdk.zip && unzip nrf5_sdk.zip && mv nRF5_SDK_15.3.0_59ac345 nrf5_sdk
 
     - name: Checkout source files
@@ -53,9 +57,10 @@ jobs:
     - name: Show Files
       run:  set ; pwd ; ls -l ~
       
-    - name: cmake
+    - name: CMake
       run:  mkdir -p build && cd build && cmake -DARM_NONE_EABI_TOOLCHAIN_PATH=${{ runner.temp }}/arm-none-eabi -DNRF5_SDK_PATH=${{ runner.temp }}/nrf5_sdk -DUSE_OPENOCD=1 ../
       
-    - name: make -j
-      run:  cd build && make pinetime-app
+    - name: Make -j
+      run:  exit && cd build && make pinetime-app
       
+# Embedded Arm Toolchain and nRF5 SDK will only be cached if the build succeeds