openmp/cmake/HandleOpenMPOptions.cmake

   1 if (OPENMP_STANDALONE_BUILD)
   2   # From HandleLLVMOptions.cmake
   3   function(append_if condition value)
   4     if (${condition})
   5       foreach(variable ${ARGN})
   6         set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
   7       endforeach(variable)
   8     endif()
   9   endfunction()
  10 endif()
  11
  12 # MSVC and clang-cl in compatibility mode map -Wall to -Weverything.
  13 # TODO: LLVM adds /W4 instead, check if that works for the OpenMP runtimes.
  14 if (NOT MSVC)
  15   append_if(OPENMP_HAVE_WALL_FLAG "-Wall" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
  16 endif()
  17 if (OPENMP_ENABLE_WERROR)
  18   append_if(OPENMP_HAVE_WERROR_FLAG "-Werror" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
  19 endif()
  20
  21 # Additional warnings that are not enabled by -Wall.
  22 append_if(OPENMP_HAVE_WCAST_QUAL_FLAG "-Wcast-qual" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
  23 append_if(OPENMP_HAVE_WFORMAT_PEDANTIC_FLAG "-Wformat-pedantic" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
  24 append_if(OPENMP_HAVE_WIMPLICIT_FALLTHROUGH_FLAG "-Wimplicit-fallthrough" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
  25 append_if(OPENMP_HAVE_WSIGN_COMPARE_FLAG "-Wsign-compare" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
  26
  27 # Warnings that we want to disable because they are too verbose or fragile.
  28
  29 # GCC silently accepts any -Wno-<foo> option, but warns about those options
  30 # being unrecognized only if the compilation triggers other warnings to be
  31 # printed. Therefore, check for whether the compiler supports options in the
  32 # form -W<foo>, and if supported, add the corresponding -Wno-<foo> option.
  33
  34 append_if(OPENMP_HAVE_WENUM_CONSTEXPR_CONVERSION_FLAG "-Wno-enum-constexpr-conversion" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
  35 append_if(OPENMP_HAVE_WEXTRA_FLAG "-Wno-extra" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
  36 append_if(OPENMP_HAVE_WPEDANTIC_FLAG "-Wno-pedantic" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
  37 append_if(OPENMP_HAVE_WMAYBE_UNINITIALIZED_FLAG "-Wno-maybe-uninitialized" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)