refactor: use ccache to speedup builds

CMakeLists.txt

@@ -175,6 +175,13 @@ include(cmake/CPM.cmake)
 # excluded from the generated target lists for the various tools.
 set(FETCHCONTENT_BASE_DIR ${CMAKE_BINARY_DIR}/third_party_deps)
 
+# ---- Speedup build using ccache ----
+# see https://github.com/TheLartians/Ccache.cmake enables CCACHE support through
+# the USE_CCACHE flag possible values are: YES, NO or equivalent
+if(USE_CCACHE)
+  cpmaddpackage("gh:TheLartians/[email protected]")
+endif()
+
 # ------------------------------------------------------------------------------
 # Testing
 # ------------------------------------------------------------------------------

CMakePresets.json

@@ -19,6 +19,7 @@
         "caexcludepath": "${sourceDir}/third_party;${sourceDir}/out"
       },
       "cacheVariables": {
+        "USE_CCACHE": "ON",
         "ASAP_BUILD_TESTS": "ON",
         "ASAP_BUILD_EXAMPLES": "ON"
       }