openmp/cmake/config-ix.cmake

   1 include(CheckCXXCompilerFlag)
   2 include(CheckCXXSourceCompiles)
   3
   4 # Check for oneAPI compiler (some older CMake versions detect as Clang)
   5 if (CMAKE_C_COMPILER_ID STREQUAL "Clang")
   6   check_cxx_source_compiles("#if (defined(__INTEL_CLANG_COMPILER) || defined(__INTEL_LLVM_COMPILER))
   7                              int main() { return 0; }
   8                              #else
   9                              not oneAPI
  10                              #endif" OPENMP_HAVE_ONEAPI_COMPILER)
  11   if (OPENMP_HAVE_ONEAPI_COMPILER)
  12     # According to CMake documentation, the compiler id should
  13     # be IntelLLVM when detected oneAPI
  14     set(CMAKE_C_COMPILER_ID "IntelLLVM")
  15     set(CMAKE_CXX_COMPILER_ID "IntelLLVM")
  16   endif()
  17 endif()
  18
  19 check_cxx_compiler_flag(-Wall OPENMP_HAVE_WALL_FLAG)
  20 check_cxx_compiler_flag(-Werror OPENMP_HAVE_WERROR_FLAG)
  21 check_cxx_compiler_flag(-fcolor-diagnostics OPENMP_HAVE_COLOR_DIAGNOSTICS)
  22
  23 # Additional warnings that are not enabled by -Wall.
  24 check_cxx_compiler_flag(-Wcast-qual OPENMP_HAVE_WCAST_QUAL_FLAG)
  25 check_cxx_compiler_flag(-Wformat-pedantic OPENMP_HAVE_WFORMAT_PEDANTIC_FLAG)
  26 check_cxx_compiler_flag(-Wimplicit-fallthrough OPENMP_HAVE_WIMPLICIT_FALLTHROUGH_FLAG)
  27 check_cxx_compiler_flag(-Wsign-compare OPENMP_HAVE_WSIGN_COMPARE_FLAG)
  28
  29 # Warnings that we want to disable because they are too verbose or fragile.
  30
  31 # GCC silently accepts any -Wno-<foo> option, but warns about those options
  32 # being unrecognized only if the compilation triggers other warnings to be
  33 # printed. Therefore, check for whether the compiler supports options in the
  34 # form -W<foo>, and if supported, add the corresponding -Wno-<foo> option.
  35
  36 check_cxx_compiler_flag(-Wextra OPENMP_HAVE_WEXTRA_FLAG)
  37 check_cxx_compiler_flag(-Wpedantic OPENMP_HAVE_WPEDANTIC_FLAG)
  38 check_cxx_compiler_flag(-Wmaybe-uninitialized OPENMP_HAVE_WMAYBE_UNINITIALIZED_FLAG)
  39
  40 # Additional flags for optimizing created libraries.
  41
  42 check_cxx_compiler_flag(-fno-semantic-interposition OPENMP_HAVE_NO_SEMANTIC_INTERPOSITION)
  43 check_cxx_compiler_flag(-ffunction-section OPENMP_HAVE_FUNCTION_SECTIONS)
  44 check_cxx_compiler_flag(-fdata-sections OPENMP_HAVE_DATA_SECTIONS)