Add ccache support (close #1)

Author: ramsafin

CMakeLists.txt

@@ -20,6 +20,9 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 # === Options ===
 include(Options)
 
+# === Cache ===
+include(Cache)
+
 # === Compiler Flags ===
 include(CompilerFlags)
 

CMakePresets.json

@@ -12,6 +12,7 @@
       "generator": "Ninja",
       "binaryDir": "${sourceDir}/build/${presetName}",
       "cacheVariables": {
+        "ENABLE_CACHE": "OFF",
         "ENABLE_WARNINGS": "ON",
         "ENABLE_STRICT_WARNINGS": "ON",
         "ENABLE_TESTING": "ON",

cmake/Cache.cmake

@@ -0,0 +1,12 @@
+# Cache.cmake — find and wire up ccache if ENABLE_CACHE is ON
+
+if(ENABLE_CACHE)
+  find_program(CCACHE_PROGRAM NAMES ccache)
+  if(CCACHE_PROGRAM)
+    message(STATUS "Found ccache: ${CCACHE_PROGRAM}")
+    set(CMAKE_C_COMPILER_LAUNCHER   "${CCACHE_PROGRAM}" CACHE STRING "" FORCE)
+    set(CMAKE_CXX_COMPILER_LAUNCHER "${CCACHE_PROGRAM}" CACHE STRING "" FORCE)
+  else()
+    message(WARNING "ccache requested but not found → continuing without caching")
+  endif()
+endif()

cmake/Coverage.cmake

@@ -1,5 +1,5 @@
 if(ENABLE_COVERAGE)
-  find_program(GCOVR_EXE gcovr REQUIRED)
+  find_program(GCOVR_EXE NAMES gcovr REQUIRED)
   set(COVERAGE_OUTPUT_DIR "${CMAKE_BINARY_DIR}")
 
   add_custom_target(coverage

cmake/Options.cmake

@@ -1,29 +1,29 @@
 #–– Options.cmake –– user‐facing toggles
 
 # — Build Targets —
-option(ENABLE_TESTING         "Build unit tests"                  ON)
-option(ENABLE_BENCHMARKS      "Build benchmarks"                  OFF)
-option(BUILD_APP              "Build the demo application"        OFF)
+option(ENABLE_TESTING         "Build unit tests"                      ON)
+option(ENABLE_BENCHMARKS      "Build benchmarks"                      OFF)
+option(BUILD_APP              "Build the demo application"            OFF)
 
 # — Quality Checks —
-option(ENABLE_WARNINGS        "Enable compiler warnings"          ON)
-option(ENABLE_STRICT_WARNINGS "Treat warnings as errors"          ON)
-option(ENABLE_COVERAGE        "Enable coverage instrumentation"   OFF)
-option(ENABLE_SANITIZERS      "Enable ASan / UBSan"               OFF)
-option(ENABLE_ASAN            "Enable AddressSanitizer"           OFF)
-option(ENABLE_UBSAN           "Enable UndefinedBehaviorSanitizer" OFF)
+option(ENABLE_WARNINGS        "Enable compiler warnings"              ON)
+option(ENABLE_STRICT_WARNINGS "Treat warnings as errors"              ON)
+option(ENABLE_COVERAGE        "Enable coverage instrumentation"       OFF)
+option(ENABLE_SANITIZERS      "Enable ASan / UBSan"                   OFF)
+option(ENABLE_ASAN            "Enable AddressSanitizer"               OFF)
+option(ENABLE_UBSAN           "Enable UndefinedBehaviorSanitizer"     OFF)
 
 # — Static Analysis —
-option(ENABLE_CPPCHECK        "Enable Cppcheck integration"       ON)
-option(ENABLE_CLANG_TIDY      "Enable clang-tidy integration"     ON)
-option(ENABLE_CLANG_FORMAT    "Enable clang-format integration"   ON)
+option(ENABLE_CPPCHECK        "Enable Cppcheck integration"           ON)
+option(ENABLE_CLANG_TIDY      "Enable clang-tidy integration"         ON)
+option(ENABLE_CLANG_FORMAT    "Enable clang-format integration"       ON)
 
-if(ENABLE_COVERAGE AND NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
-  message(WARNING "Coverage instrumentation is best used with Debug builds.")
-endif()
+option(ENABLE_CACHE           "Enable ccache to speed up compilation" OFF)
 
 # If someone turns on the “global” sanitizer switch, enable each one
 if(ENABLE_SANITIZERS)
   set(ENABLE_ASAN  ON)
   set(ENABLE_UBSAN ON)
 endif()
+
+

cmake/Tooling.cmake

@@ -34,7 +34,7 @@ endif()
 
 # clang-format
 if(ENABLE_CLANG_FORMAT)
-  find_program(CLANG_FORMAT_EXE clang-format)
+  find_program(CLANG_FORMAT_EXE NAMES clang-format)
 
   if(CLANG_FORMAT_EXE)
     message(STATUS "Found clang-format: ${CLANG_TIDY_EXE}")
@@ -60,7 +60,7 @@ endif()
 
 # cppcheck
 if(ENABLE_CPPCHECK)
-  find_program(CPPCHECK_EXE cppcheck)
+  find_program(CPPCHECK_EXE NAMES cppcheck)
 
   if(CPPCHECK_EXE)
     message(STATUS "Found cppcheck: ${CLANG_TIDY_EXE}")
@@ -83,7 +83,7 @@ endif()
 
 # clang-tidy
 if(ENABLE_CLANG_TIDY)
-  find_program(CLANG_TIDY_EXE clang-tidy)
+  find_program(CLANG_TIDY_EXE NAMES clang-tidy)
 
   if (CLANG_TIDY_EXE)
     message(STATUS "Found clang-tidy: ${CLANG_TIDY_EXE}")