# # This file defines the `thrust_build_compiler_targets()` function, which # creates the following interface targets: # # thrust.compiler_interface # - Interface target providing compiler-specific options needed to build # Thrust's tests, examples, etc. # # thrust.compiler_interface_cpp11 # thrust.compiler_interface_cpp14 # thrust.compiler_interface_cpp17 # - Interface targets providing compiler-specific options that should only be # applied to certain dialects of C++. # # thrust.promote_cudafe_warnings # - Interface target that adds warning promotion for NVCC cudafe invocations. # - Only exists to work around github issue #1174 on tbb.cuda configurations. # - May be combined with thrust.compiler_interface when #1174 is fully resolved. # # thrust.silence_unreachable_code_warnings # - Interface target that silences unreachable code warnings. # - Used to selectively disable such warnings in unit tests caused by # unconditionally thrown exceptions. function(thrust_build_compiler_targets) set(cxx_compile_definitions) set(cxx_compile_options) thrust_update_system_found_flags() if ("MSVC" STREQUAL "${CMAKE_CXX_COMPILER_ID}") append_option_if_available("/W4" cxx_compile_options) # Treat all warnings as errors. This is only supported on Release builds, # as `nv_exec_check_disable` doesn't seem to work with MSVC debug iterators # and spurious warnings are emitted. # See NVIDIA/thrust#1273, NVBug 3129879. if (CMAKE_BUILD_TYPE STREQUAL "Release") append_option_if_available("/WX" cxx_compile_options) endif() # Suppress overly-pedantic/unavoidable warnings brought in with /W4: # C4324: structure was padded due to alignment specifier append_option_if_available("/wd4324" cxx_compile_options) # C4505: unreferenced local function has been removed # The CUDA `host_runtime.h` header emits this for # `__cudaUnregisterBinaryUtil`. append_option_if_available("/wd4505" cxx_compile_options) # C4706: assignment within conditional expression # MSVC doesn't provide an opt-out for this warning when the assignment is # intentional. Clang will warn for these, but suppresses the warning when # double-parentheses are used around the assignment. We'll let Clang catch # unintentional assignments and suppress all such warnings on MSVC. append_option_if_available("/wd4706" cxx_compile_options) # Disabled loss-of-data conversion warnings. # TODO Re-enable. append_option_if_available("/wd4244" cxx_compile_options) # Disable warning about applying unary operator- to unsigned type. # TODO Re-enable. append_option_if_available("/wd4146" cxx_compile_options) # MSVC STL assumes that `allocator_traits`'s allocator will use raw pointers, # and the `__DECLSPEC_ALLOCATOR` macro causes issues with thrust's universal # allocators: # warning C4494: 'std::allocator_traits<_Alloc>::allocate' : # Ignoring __declspec(allocator) because the function return type is not # a pointer or reference # See https://github.com/microsoft/STL/issues/696 append_option_if_available("/wd4494" cxx_compile_options) # Some of the async tests require /bigobj to fit all their sections into the # object files: append_option_if_available("/bigobj" cxx_compile_options) # "Oh right, this is Visual Studio." list(APPEND cxx_compile_definitions "NOMINMAX") else() append_option_if_available("-Werror" cxx_compile_options) append_option_if_available("-Wall" cxx_compile_options) append_option_if_available("-Wextra" cxx_compile_options) append_option_if_available("-Winit-self" cxx_compile_options) append_option_if_available("-Woverloaded-virtual" cxx_compile_options) append_option_if_available("-Wcast-qual" cxx_compile_options) append_option_if_available("-Wpointer-arith" cxx_compile_options) append_option_if_available("-Wunused-local-typedef" cxx_compile_options) append_option_if_available("-Wvla" cxx_compile_options) # Disable GNU extensions (flag is clang only) append_option_if_available("-Wgnu" cxx_compile_options) # Calling a variadic macro with zero args is a GNU extension until C++20, # but the THRUST_PP_ARITY macro is used with zero args. Need to see if this # is a real problem worth fixing. append_option_if_available("-Wno-gnu-zero-variadic-macro-arguments" cxx_compile_options) # This complains about functions in CUDA system headers when used with nvcc. append_option_if_available("-Wno-unused-function" cxx_compile_options) endif() if ("GNU" STREQUAL "${CMAKE_CXX_COMPILER_ID}") if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 7.3) # GCC 7.3 complains about name mangling changes due to `noexcept` # becoming part of the type system; we don't care. append_option_if_available("-Wno-noexcept-type" cxx_compile_options) endif() endif() if ("Intel" STREQUAL "${CMAKE_CXX_COMPILER_ID}") # Disable warning that inlining is inhibited by compiler thresholds. append_option_if_available("-diag-disable=11074" cxx_compile_options) append_option_if_available("-diag-disable=11076" cxx_compile_options) endif() if ("NVCXX" STREQUAL "${CMAKE_CUDA_COMPILER_ID}") # Today: # * NVCC accepts CUDA C++ in .cu files but not .cpp files. # * NVC++ accepts CUDA C++ in .cpp files but not .cu files. # TODO: This won't be necessary in the future. list(APPEND cxx_compile_options -cppsuffix=cu) endif() add_library(thrust.compiler_interface INTERFACE) foreach (cxx_option IN LISTS cxx_compile_options) target_compile_options(thrust.compiler_interface INTERFACE $<$:${cxx_option}> $<$,$>:${cxx_option}> # Only use -Xcompiler with NVCC, not NVC++. # # CMake can't split genexs, so this can't be formatted better :( # This is: # if (using CUDA and CUDA_COMPILER is NVCC) add -Xcompiler=opt: $<$,$>:-Xcompiler=${cxx_option}> ) endforeach() foreach (cxx_definition IN LISTS cxx_compile_definitions) # Add these for both CUDA and CXX targets: target_compile_definitions(thrust.compiler_interface INTERFACE ${cxx_definition} ) endforeach() # Display warning numbers from nvcc cudafe errors: target_compile_options(thrust.compiler_interface INTERFACE # If using CUDA w/ NVCC... $<$,$>:-Xcudafe=--display_error_number> ) # Tell NVCC to be quiet about deprecated GPU targets: target_compile_options(thrust.compiler_interface INTERFACE # If using CUDA w/ NVCC... $<$,$>:-Wno-deprecated-gpu-targets> ) # This is kept separate for Github issue #1174. add_library(thrust.promote_cudafe_warnings INTERFACE) target_compile_options(thrust.promote_cudafe_warnings INTERFACE $<$,$>:-Xcudafe=--promote_warnings> ) # Some of our unit tests unconditionally throw exceptions, and compilers will # detect that the following instructions are unreachable. This is intentional # and unavoidable in these cases. This target can be used to silence # unreachable code warnings. add_library(thrust.silence_unreachable_code_warnings INTERFACE) if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") target_compile_options(thrust.silence_unreachable_code_warnings INTERFACE $<$:/wd4702> $<$,$>:-Xcompiler=/wd4702> ) endif() # These targets are used for dialect-specific options: add_library(thrust.compiler_interface_cpp11 INTERFACE) add_library(thrust.compiler_interface_cpp14 INTERFACE) add_library(thrust.compiler_interface_cpp17 INTERFACE) if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") # C4127: conditional expression is constant # Disable this MSVC warning for C++11/C++14. In C++17, we can use # THRUST_IF_CONSTEXPR to address these warnings. target_compile_options(thrust.compiler_interface_cpp11 INTERFACE $<$:/wd4127> $<$,$>:-Xcompiler=/wd4127> ) target_compile_options(thrust.compiler_interface_cpp14 INTERFACE $<$:/wd4127> $<$,$>:-Xcompiler=/wd4127> ) endif() endfunction()