CMake – Make the compiler compile more strictly

Let’s make compiler to check return value in cpp functions. If there is wrong data type for interface’s return value, compiling process will fail and gives us error information.

  message(STATUS "===== configure compiling option =====, CMAKE_GENERATOR: ${CMAKE_GENERATOR}")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Werror=return-type")

  if(CMAKE_GENERATOR MATCHES "Ninja")
      set(CMAKE_NINJA_FORCE_RESPONSE_FILE OFF)
  endif()

We can also check uninitialized variables in C++ file by the setting:

-Werror=uninitialized