This directory contains CMake modules for OpenMP. These can be included into a project to include different OpenMP features.
This module will attempt to find OpenMP target offloading support for a given
device. The module will attempt to compile a test program using known compiler
flags for each requested architecture. If successful, the flags required for
offloading will be loaded into the OpenMPTarget::OpenMPTarget_<device>
target or the OpenMPTarget_<device>_FLAGS variable. Currently supported target
devices are NVPTX and AMDGPU. This module is still under development so
some features may be missing.
To use this module, simply add the path to CMake's current module path and call
find_package. The module will be installed with your OpenMP installation by
default. Including OpenMP offloading support in an application should now only
require a few additions.
cmake_minimum_required(VERSION 3.13.4)
project(offloadTest VERSION 1.0 LANGUAGES CXX)
list(APPEND CMAKE_MODULE_PATH "${PATH_TO_OPENMP_INSTALL}/lib/cmake/openmp")
find_package(OpenMPTarget REQUIRED NVPTX)
add_executable(offload)
target_link_libraries(offload PRIVATE OpenMPTarget::OpenMPTarget_NVPTX)
target_sources(offload PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src/Main.cpp)Using this module requires at least CMake version 3.13.4. Supported languages
are C and C++ with Fortran support planned in the future. If your application
requires building for a specific device architecture you can set the
OpenMPTarget_<device>_ARCH=<flag> variable. Compiler support is best for
Clang but this module should work for other compiler vendors such as IBM or GNU.