110 lines
4.2 KiB
CMake
110 lines
4.2 KiB
CMake
#
|
|
#//===----------------------------------------------------------------------===//
|
|
#//
|
|
#// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
#// See https://llvm.org/LICENSE.txt for license information.
|
|
#// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
#//
|
|
#//===----------------------------------------------------------------------===//
|
|
#
|
|
|
|
# Try to detect in the system several dependencies required by the different
|
|
# components of libomptarget. These are the dependencies we have:
|
|
#
|
|
# libffi : required to launch target kernels given function and argument
|
|
# pointers.
|
|
# CUDA : required to control offloading to NVIDIA GPUs.
|
|
|
|
include (FindPackageHandleStandardArgs)
|
|
|
|
################################################################################
|
|
# Looking for LLVM...
|
|
################################################################################
|
|
|
|
if (OPENMP_STANDALONE_BUILD)
|
|
# Complete LLVM package is required for building libomptarget
|
|
# in an out-of-tree mode.
|
|
find_package(LLVM REQUIRED)
|
|
message(STATUS "Found LLVM ${LLVM_PACKAGE_VERSION}")
|
|
message(STATUS "Using LLVM in: ${LLVM_DIR}")
|
|
list(APPEND LIBOMPTARGET_LLVM_INCLUDE_DIRS ${LLVM_INCLUDE_DIRS})
|
|
list(APPEND CMAKE_MODULE_PATH ${LLVM_CMAKE_DIR})
|
|
include(AddLLVM)
|
|
if(TARGET omptarget)
|
|
message(FATAL_ERROR "CMake target 'omptarget' already exists. "
|
|
"Use an LLVM installation that doesn't expose its 'omptarget' target.")
|
|
endif()
|
|
else()
|
|
# Note that OPENMP_STANDALONE_BUILD is FALSE, when
|
|
# openmp is built with -DLLVM_ENABLE_RUNTIMES="openmp" vs
|
|
# -DLLVM_ENABLE_PROJECTS="openmp", but openmp build
|
|
# is actually done as a standalone project build with many
|
|
# LLVM CMake variables propagated to it.
|
|
list(APPEND LIBOMPTARGET_LLVM_INCLUDE_DIRS
|
|
${LLVM_MAIN_INCLUDE_DIR} ${LLVM_BINARY_DIR}/include
|
|
)
|
|
message(STATUS
|
|
"Using LLVM include directories: ${LIBOMPTARGET_LLVM_INCLUDE_DIRS}")
|
|
endif()
|
|
|
|
################################################################################
|
|
# Looking for libffi...
|
|
################################################################################
|
|
find_package(FFI QUIET)
|
|
set(LIBOMPTARGET_DEP_LIBFFI_FOUND ${FFI_FOUND})
|
|
|
|
################################################################################
|
|
# Looking for CUDA...
|
|
################################################################################
|
|
|
|
find_package(CUDAToolkit QUIET)
|
|
set(LIBOMPTARGET_DEP_CUDA_FOUND ${CUDAToolkit_FOUND})
|
|
|
|
################################################################################
|
|
# Looking for NVIDIA GPUs...
|
|
################################################################################
|
|
set(LIBOMPTARGET_DEP_CUDA_ARCH "sm_35")
|
|
|
|
if(TARGET nvptx-arch)
|
|
get_property(LIBOMPTARGET_NVPTX_ARCH TARGET nvptx-arch PROPERTY LOCATION)
|
|
else()
|
|
find_program(LIBOMPTARGET_NVPTX_ARCH NAMES nvptx-arch
|
|
PATHS ${LLVM_TOOLS_BINARY_DIR}/bin)
|
|
endif()
|
|
|
|
if(LIBOMPTARGET_NVPTX_ARCH)
|
|
execute_process(COMMAND ${LIBOMPTARGET_NVPTX_ARCH}
|
|
OUTPUT_VARIABLE LIBOMPTARGET_NVPTX_ARCH_OUTPUT
|
|
OUTPUT_STRIP_TRAILING_WHITESPACE)
|
|
string(REPLACE "\n" ";" nvptx_arch_list "${LIBOMPTARGET_NVPTX_ARCH_OUTPUT}")
|
|
if(nvptx_arch_list)
|
|
set(LIBOMPTARGET_FOUND_NVIDIA_GPU TRUE)
|
|
set(LIBOMPTARGET_NVPTX_DETECTED_ARCH_LIST "${nvptx_arch_list}")
|
|
list(GET nvptx_arch_list 0 LIBOMPTARGET_DEP_CUDA_ARCH)
|
|
endif()
|
|
endif()
|
|
|
|
|
|
################################################################################
|
|
# Looking for AMD GPUs...
|
|
################################################################################
|
|
|
|
if(TARGET amdgpu-arch)
|
|
get_property(LIBOMPTARGET_AMDGPU_ARCH TARGET amdgpu-arch PROPERTY LOCATION)
|
|
else()
|
|
find_program(LIBOMPTARGET_AMDGPU_ARCH NAMES amdgpu-arch
|
|
PATHS ${LLVM_TOOLS_BINARY_DIR}/bin)
|
|
endif()
|
|
|
|
if(LIBOMPTARGET_AMDGPU_ARCH)
|
|
execute_process(COMMAND ${LIBOMPTARGET_AMDGPU_ARCH}
|
|
OUTPUT_VARIABLE LIBOMPTARGET_AMDGPU_ARCH_OUTPUT
|
|
OUTPUT_STRIP_TRAILING_WHITESPACE)
|
|
string(REPLACE "\n" ";" amdgpu_arch_list "${LIBOMPTARGET_AMDGPU_ARCH_OUTPUT}")
|
|
if(amdgpu_arch_list)
|
|
set(LIBOMPTARGET_FOUND_AMDGPU_GPU TRUE)
|
|
set(LIBOMPTARGET_AMDGPU_DETECTED_ARCH_LIST "${amdgpu_arch_list}")
|
|
endif()
|
|
endif()
|
|
|
|
set(OPENMP_PTHREAD_LIB ${LLVM_PTHREAD_LIB})
|