# This files manage compilation flags required by GUDHI

include(TestCXXAcceptsFlag)

# add a compiler flag only if it is accepted
macro(add_cxx_compiler_flag _flag)
  string(REPLACE "-" "_" _flag_var ${_flag})
  check_cxx_accepts_flag("${_flag}" CXX_COMPILER_${_flag_var}_OK)
  if(CXX_COMPILER_${_flag_var}_OK)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_flag}")
  endif()
endmacro()

set (CMAKE_CXX_STANDARD 11)

enable_testing()

if(MSVC)
  # Turn off some VC++ warnings
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4267 /wd4668 /wd4311 /wd4800 /wd4820 /wd4503 /wd4244 /wd4345 /wd4996 /wd4396 /wd4018")
endif()

add_cxx_compiler_flag("-Wall")

if(CMAKE_BUILD_TYPE MATCHES Debug)
  message("++ Debug compilation flags are: ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_DEBUG}")
else()
  message("++ Release compilation flags are: ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE}")
endif()

if (DEBUG_TRACES)
  # For programs to be more verbose
  message(STATUS "DEBUG_TRACES are activated")
  add_definitions(-DDEBUG_TRACES)
endif()