find_program(CCACHE_BIN NAMES ccache sccache)
if(CCACHE_BIN)
  # Official ccache recommendation is to set CMAKE_C(XX)_COMPILER_LAUNCHER
  if (NOT CMAKE_C_COMPILER_LAUNCHER MATCHES "ccache")
    list(INSERT CMAKE_C_COMPILER_LAUNCHER 0 "${CCACHE_BIN}")
  endif()

  if (NOT CMAKE_CXX_COMPILER_LAUNCHER MATCHES "ccache")
    list(INSERT CMAKE_CXX_COMPILER_LAUNCHER 0 "${CCACHE_BIN}")
  endif()

  # ccache uses -I when compiling without preprocessor, which makes clang complain.
  if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Qunused-arguments -fcolor-diagnostics")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Qunused-arguments -fcolor-diagnostics")
  endif()
endif()
