Update github actions for CPM

Author: haohaolee

.github/workflows/cmake.yml

@@ -10,10 +10,8 @@ on:
 
 env:
   BUILD_TYPE: RelWithDebInfo
-  # Conan cache environment variables
-  CONAN_SYSREQUIRES_MODE: enabled
-  CONAN_USER_HOME: "${{ github.workspace }}/conan-cache"
-  CONAN_USER_HOME_SHORT: "${{ github.workspace }}/conan-cache/short"
+  # CPM cache environment variable
+  CPM_SOURCE_CACHE: "${{ github.workspace }}/.cpm-cache"
 
 jobs:
   build:
@@ -29,15 +27,11 @@ jobs:
     - name: Cache
       uses: actions/cache@v2
       env:
-        cache-name: cache-conan-modules
+        cache-name: cache-cpm-modules
       with:
         path: |
-          ${{ env.CONAN_USER_HOME }}
-          ~/.cache/pip
-        key: ${{ runner.os }}-${{ env.BUILD_TYPE }}-${{ hashFiles('CMakeLists.txt') }}-${{ hashFiles('cmake/Conan.cmake') }}
-    
-    - name: Get Conan
-      uses: turtlebrowser/[email protected]
+          ${{ env.CPM_SOURCE_CACHE }}
+        key: ${{ runner.os }}-${{ env.BUILD_TYPE }}-${{ hashFiles('CMakeLists.txt') }}-${{ hashFiles('cmake/CPM.cmake') }}
 
     - name: Configure CMake
       run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}