##===----------------------------------------------------------------------===##
# 
# 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
# 
##===----------------------------------------------------------------------===##
#
# Build a plugin for a CUDA machine if available.
#
##===----------------------------------------------------------------------===##
if (NOT(CMAKE_SYSTEM_PROCESSOR MATCHES "(x86_64)|(ppc64le)$" AND CMAKE_SYSTEM_NAME MATCHES "Linux"))
  libomptarget_say("Not building CUDA offloading plugin: only support CUDA in Linux x86_64 or ppc64le hosts.")
  return()
elseif (NOT LIBOMPTARGET_DEP_LIBELF_FOUND)
  libomptarget_say("Not building CUDA offloading plugin: libelf dependency not found.")
  return()
elseif(NOT LIBOMPTARGET_DEP_CUDA_FOUND)
  libomptarget_say("Not building CUDA offloading plugin: CUDA not found in system.")
  return()
elseif(NOT LIBOMPTARGET_DEP_CUDA_DRIVER_FOUND)
  libomptarget_say("Not building CUDA offloading plugin: CUDA Driver API not found in system.")
  return()
endif()

libomptarget_say("Building CUDA offloading plugin.")

# Define the suffix for the runtime messaging dumps.
add_definitions(-DTARGET_NAME=CUDA)

if(LIBOMPTARGET_CMAKE_BUILD_TYPE MATCHES debug)
    add_definitions(-DCUDA_ERROR_REPORT)
endif()

include_directories(${LIBOMPTARGET_DEP_CUDA_INCLUDE_DIRS})
include_directories(${LIBOMPTARGET_DEP_LIBELF_INCLUDE_DIRS})

add_library(omptarget.rtl.cuda SHARED src/rtl.cpp)

# Install plugin under the lib destination folder.
install(TARGETS omptarget.rtl.cuda LIBRARY DESTINATION "${OPENMP_INSTALL_LIBDIR}")

target_link_libraries(omptarget.rtl.cuda
  ${LIBOMPTARGET_DEP_CUDA_DRIVER_LIBRARIES}
  ${LIBOMPTARGET_DEP_LIBELF_LIBRARIES}
  "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/../exports")

# Report to the parent scope that we are building a plugin for CUDA.
set(LIBOMPTARGET_SYSTEM_TARGETS "${LIBOMPTARGET_SYSTEM_TARGETS} nvptx64-nvidia-cuda" PARENT_SCOPE)