Commit 5e62a55b authored Jul 26, 2017 by Hans Wennborg

Merging r309115:

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r309115 | hahnfeld | 2017-07-26 06:55:00 -0700 (Wed, 26 Jul 2017) | 15 lines

[CMake] Disable building libomptarget and add CMake switch

Introduce OPENMP_ENABLE_LIBOMPTARGET which defaults to OFF at the moment.

libomptarget is not yet ready for prime time:
 - Offloading to NVIDIA GPUs is not completed yet (compiler, device RTL)
 - The generic ELF plugin for offloading to the host (meant for testing)
   uses a single instance of the OpenMP runtime (libomp). That is why
   omp_is_initial_device() returns 1 which makes the tests fail.
Because of these reasons, we want to disable building (and testing!)
for release 5.0.

See https://bugs.llvm.org/show_bug.cgi?id=33859

Differential Revision: https://reviews.llvm.org/D35719
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llvm-svn: 309126

parent f53e3212

openmp/CMakeLists.txt

+12 −1

Original line number	Diff line number	Diff line
		@@ -4,9 +4,20 @@ set(OPENMP_LLVM_TOOLS_DIR "" CACHE PATH "Path to LLVM tools for testing")

		add_subdirectory(runtime)


		# The tests currently don't pass if the generic ELF plugin is built.
		# TODO: Fix the tests and enable libomptarget by default on supported
		# architectures and platforms.
		set(ENABLE_LIBOMPTARGET OFF)
		# Currently libomptarget cannot be compiled on Windows or MacOS X.
		# Since the device plugins are only supported on Linux anyway,
		# there is no point in trying to compile libomptarget on other OSes.
		if (NOT (WIN32 OR ${CMAKE_SYSTEM_NAME} MATCHES "Darwin"))
		if (WIN32 OR ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
		set(ENABLE_LIBOMPTARGET OFF)
		endif()

		option(OPENMP_ENABLE_LIBOMPTARGET "Enable building libomptarget for offloading."
		${ENABLE_LIBOMPTARGET})
		if (OPENMP_ENABLE_LIBOMPTARGET)
		add_subdirectory(libomptarget)
		endif()