Modules/Compiler/NVHPC-CXX.cmake

include(Compiler/PGI-CXX)
include(Compiler/NVHPC)

# Needed so that we support `LANGUAGE` property correctly
set(CMAKE_CXX_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -x c++)
set(CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY "-fvisibility=")
set(CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY_INLINES_HIDDEN "-fvisibility-inlines-hidden")

if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 20.11)
  set(CMAKE_CXX20_STANDARD_COMPILE_OPTION  -std=c++20)
  set(CMAKE_CXX20_EXTENSION_COMPILE_OPTION -std=gnu++20)
  set(CMAKE_CXX_STANDARD_LATEST 20)
endif()

if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 21.07)
  set(CMAKE_DEPFILE_FLAGS_CXX "-MD -MT <DEP_TARGET> -MF <DEP_FILE>")
  set(CMAKE_CXX_DEPFILE_FORMAT gcc)
  set(CMAKE_CXX_DEPENDS_USE_COMPILER TRUE)
else()
  # Before NVHPC 21.07 the `-MD` flag implicitly
  # implies `-E` and therefore compilation and dependency generation
  # can't occur in the same invocation
  set(CMAKE_CXX_DEPENDS_EXTRA_COMMANDS "<CMAKE_CXX_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -x c++ -M <SOURCE> -MT <OBJECT> -MD<DEP_FILE>")
endif()

if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 24.9)
  set(CMAKE_CXX23_STANDARD_COMPILE_OPTION -std=c++23)
  set(CMAKE_CXX23_EXTENSION_COMPILE_OPTION -std=c++23) # -std=gnu++23 is missing
  set(CMAKE_CXX_STANDARD_LATEST 23)
endif()

if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 26.3)
  set(CMAKE_CXX23_EXTENSION_COMPILE_OPTION -std=gnu++23) # -std=gnu++23 is now available
  set(CMAKE_CXX26_STANDARD_COMPILE_OPTION -std=c++26)
  set(CMAKE_CXX26_EXTENSION_COMPILE_OPTION -std=gnu++26)
  set(CMAKE_CXX_STANDARD_LATEST 26)
endif()

__compiler_nvhpc(CXX)