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llvm-openmp: fix incompatibilities with official FindOpenMP
, add v18.1.8, simplify patches, add MSVC support
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a447807
llvm-openmp: fix missing FindOpenMP.cmake, check _OPENMP define
valgur e456670
llvm-openmp: improve exported compiler flags
valgur 6fb0dd2
llvm-openmp: print runtime library info in test_package
valgur 2cb443d
llvm-openmp: match the output of FindOpenMP.cmake
valgur c404d92
llvm-openmp: add MSVC support
valgur 7b5356b
llvm-openmp: mention potential cause of the armv8 Debug issues
valgur f57b467
llvm-openmp: add a comment
valgur 2a7cf6e
llvm-openmp: move omp to a separate component
valgur 8a83eb1
llvm-openmp: add Conan v1 support
valgur 73c3994
llvm-openmp: drop v10 and lower
valgur 1e01abf
llvm-openmp: patches can be dropped
valgur fc7bdb5
llvm-openmp: libomptarget is not available on macOS and Windows
valgur e7e762a
llvm-openmp: fix CMake 3.15 incompatibility
valgur bc021ce
llvm-openmp: .get_safe("build_libomptarget")
valgur ea9eaf2
llvm-openmp: don't use a target for linking in the module
valgur 9fc21e7
llvm-openmp: restore the v11 macOS armv8 patch
valgur a2fe32a
llvm-openmp: add psapi system lib dep on Windows
valgur adecb64
llvm-openmp: OpenMP version and spec date version can be determined d…
valgur c4bb7ca
llvm-openmp: add v18.1.3
valgur 4144399
llvm-openmp: print even more details in test_package
valgur 0a4c71e
llvm-openmp: set OpenMP version to the minimum of compiler and runtim…
valgur ae6714b
llvm-openmp: add all spec date versions
valgur e930782
llvm-openmp: set shared=True by default on Windows
valgur 3c5b269
llvm-openmp: force shared=True on Windows
valgur 59df6b9
llvm-openmp: fix try_compile() on CXX-only projects
valgur 74cabe3
llvm-openmp: bump to v18.1.6
valgur d04ab65
llvm-openmp: bump to v18.1.8
valgur 5d5e5b5
llvm-openmp: make the wrapper slightly more robust
valgur ee2352f
llvm-openmp: don't change the Windows omp library name
valgur e4327f7
llvm-openmp: default to shared=True
valgur c634b1e
llvm-openmp: add CMake's copyright notice, mention OpenMP_RUNTIME_MSVC
valgur 330e462
llvm-openmp: adjust the default shared=True handling
valgur 0fa4469
Merge remote-tracking branch 'upstream/master' into bugfix/llvm-openmp
valgur d21c689
llvm-openmp: prohibit the use of OpenMP_C_FLAGS/OpenMP_CXX_FLAGS
valgur 6d2542a
llvm-openmp: check that the correct OpenMP runtime is being used
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199 changes: 199 additions & 0 deletions
199
recipes/llvm-openmp/all/cmake/conan-llvm-openmp-vars.cmake.in
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# Reproduces the output of https://github.com/Kitware/CMake/blob/v3.30.2/Modules/FindOpenMP.cmake | ||
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# The OpenMP_RUNTIME_MSVC input variable is ignored and always set to 'llvm' for the llvm-openmp package. | ||
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# The _openmp_get_compiler_spec_date() and _openmp_set_version_by_spec_date() functions are adapted from CMake's FindOpenMP.cmake module, | ||
# which is distributed under the following BSD 3-Clause license: | ||
# | ||
# Copyright 2000-2024 Kitware, Inc. and Contributors | ||
# All rights reserved. | ||
# | ||
# Redistribution and use in source and binary forms, with or without | ||
# modification, are permitted provided that the following conditions | ||
# are met: | ||
# | ||
# * Redistributions of source code must retain the above copyright | ||
# notice, this list of conditions and the following disclaimer. | ||
# | ||
# * Redistributions in binary form must reproduce the above copyright | ||
# notice, this list of conditions and the following disclaimer in the | ||
# documentation and/or other materials provided with the distribution. | ||
# | ||
# * Neither the name of Kitware, Inc. nor the names of Contributors | ||
# may be used to endorse or promote products derived from this | ||
# software without specific prior written permission. | ||
# | ||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
|
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# For Conan v1 compatibility | ||
foreach(_suffix RELEASE DEBUG RELWITHDEBINFO MINSIZEREL) | ||
if(DEFINED OpenMP_OpenMP_INCLUDE_DIRS_${_suffix}) | ||
set(_v1_suffix _${_suffix}) | ||
endif() | ||
endforeach() | ||
|
||
# Due to a non-global library location, the library cannot be consumed via OpenMP_C_FLAGS/OpenMP_CXX_FLAGS alone. | ||
# The OpenMP::OpenMP_C and OpenMP::OpenMP_CXX targets must be used instead. | ||
# Setting the flags for internal use only. | ||
set(_OpenMP_FLAGS "@OpenMP_FLAGS@") | ||
|
||
set(OpenMP_C_FLAGS "--dont-use-OpenMP_C_FLAGS--use-OpenMP::OpenMP_C-target-instead") | ||
set(OpenMP_C_INCLUDE_DIR "${OpenMP_INCLUDE_DIR${_v1_suffix}}") | ||
set(OpenMP_C_INCLUDE_DIRS "${OpenMP_INCLUDE_DIRS${_v1_suffix}}") | ||
set(OpenMP_C_LIB_NAMES OpenMP::OpenMP_C) | ||
set(OpenMP_C_LIBRARIES OpenMP::OpenMP_C) | ||
set(OpenMP_C_DEFINITIONS "${OpenMP_DEFINITIONS${_v1_suffix}}") | ||
|
||
set(OpenMP_CXX_FLAGS "--dont-use-OpenMP_CXX_FLAGS--use-OpenMP::OpenMP_CXX-target-instead") | ||
set(OpenMP_CXX_INCLUDE_DIR "${OpenMP_C_INCLUDE_DIR}") | ||
set(OpenMP_CXX_INCLUDE_DIRS "${OpenMP_C_INCLUDE_DIRS}") | ||
set(OpenMP_CXX_LIB_NAMES OpenMP::OpenMP_CXX) | ||
set(OpenMP_CXX_LIBRARIES OpenMP::OpenMP_CXX) | ||
set(OpenMP_CXX_DEFINITIONS "${OpenMP_C_DEFINITIONS}") | ||
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||
set(OpenMP_omp_LIBRARY OpenMP::OpenMP) | ||
|
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# Determine OpenMP specification date and version supported by the compiler. | ||
function(_openmp_get_compiler_spec_date) | ||
set(BUILD_DIR "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/FindOpenMP") | ||
set(SRC_FILE "${BUILD_DIR}/ompver.c") | ||
if(NOT CMAKE_C_COMPILER_LOADED) | ||
set(SRC_FILE "${BUILD_DIR}/ompver.cpp") | ||
endif() | ||
set(BIN_FILE "${BUILD_DIR}/ompver.bin") | ||
file(WRITE "${SRC_FILE}" " | ||
#include <stdio.h> | ||
const char ompver_str[] = { 'I', 'N', 'F', 'O', ':', 'O', 'p', 'e', 'n', 'M', | ||
'P', '-', 'd', 'a', 't', 'e', '[', | ||
('0' + ((_OPENMP/100000)%10)), | ||
('0' + ((_OPENMP/10000)%10)), | ||
('0' + ((_OPENMP/1000)%10)), | ||
('0' + ((_OPENMP/100)%10)), | ||
('0' + ((_OPENMP/10)%10)), | ||
('0' + ((_OPENMP/1)%10)), | ||
']', '\\0' }; | ||
int main(void) | ||
{ | ||
puts(ompver_str); | ||
return 0; | ||
} | ||
") | ||
try_compile(OpenMP_SPECTEST ${BUILD_DIR} | ||
SOURCES "${SRC_FILE}" | ||
COMPILE_DEFINITIONS "${_OpenMP_FLAGS}" | ||
CMAKE_FLAGS "-DINCLUDE_DIRECTORIES:STRING=${OpenMP_C_INCLUDE_DIR}" | ||
COPY_FILE "${BIN_FILE}" | ||
) | ||
if(NOT OpenMP_SPECTEST) | ||
if(OpenMP_FIND_REQUIRED) | ||
message(FATAL_ERROR "Failed to build OpenMP test executable for specification date detection") | ||
elseif(NOT OpenMP_FIND_QUIETLY) | ||
message(SEND_ERROR "Failed to build OpenMP test executable for specification date detection") | ||
endif() | ||
return() | ||
endif() | ||
file(STRINGS ${BIN_FILE} specstr LIMIT_COUNT 1 REGEX "INFO:OpenMP-date") | ||
if(specstr MATCHES ".*INFO:OpenMP-date\\[0*([^]]*)\\].*") | ||
set(OpenMP_SPEC_DATE ${CMAKE_MATCH_1} PARENT_SCOPE) | ||
else() | ||
if(OpenMP_FIND_REQUIRED) | ||
message(FATAL_ERROR "Failed to detect OpenMP specification date") | ||
elseif(NOT OpenMP_FIND_QUIETLY) | ||
message(SEND_ERROR "Failed to detect OpenMP specification date") | ||
endif() | ||
return() | ||
endif() | ||
endfunction() | ||
|
||
function(_openmp_set_version_by_spec_date) | ||
set(OpenMP_SPEC_DATE_MAP | ||
"202111=5.2" | ||
"202011=5.1" | ||
# Preview versions | ||
"201611=5.0" # OpenMP 5.0 preview 1 | ||
# Combined versions, 2.5 onwards | ||
"201811=5.0" | ||
"201611=5.0" | ||
"201511=4.5" | ||
"201307=4.0" | ||
"201107=3.1" | ||
"200805=3.0" | ||
"200505=2.5" | ||
# C/C++ version 2.0 | ||
"200203=2.0" | ||
# Fortran version 2.0 | ||
"200011=2.0" | ||
# Fortran version 1.1 | ||
"199911=1.1" | ||
# C/C++ version 1.0 (there's no 1.1 for C/C++) | ||
"199810=1.0" | ||
# Fortran version 1.0 | ||
"199710=1.0" | ||
) | ||
if(OpenMP_SPEC_DATE_MAP MATCHES "${OpenMP_SPEC_DATE}=([0-9]+)\\.([0-9]+)") | ||
set(major "${CMAKE_MATCH_1}") | ||
set(minor "${CMAKE_MATCH_2}") | ||
else() | ||
if(OpenMP_FIND_REQUIRED) | ||
message(FATAL_ERROR "Failed to detect OpenMP specification version") | ||
elseif(NOT OpenMP_FIND_QUIETLY) | ||
message(SEND_ERROR "Failed to detect OpenMP specification version") | ||
endif() | ||
return() | ||
endif() | ||
set(OpenMP_VERSION_MAJOR "${major}" PARENT_SCOPE) | ||
set(OpenMP_VERSION_MINOR "${minor}" PARENT_SCOPE) | ||
set(OpenMP_VERSION "${major}.${minor}" PARENT_SCOPE) | ||
endfunction() | ||
|
||
# Compare the OpenMP API version supported by the compiler to | ||
# the version supported by the LLVM OMP runtime and use the lower of the two. | ||
# Note that this differs slightly from the CMake's FindOpenMP.cmake implementation, | ||
# which checks only the version supported by the compiler. | ||
_openmp_get_compiler_spec_date() | ||
if(OpenMP_SPEC_DATE GREATER @OpenMP_SPEC_DATE@) | ||
set(OpenMP_SPEC_DATE @OpenMP_SPEC_DATE@) | ||
set(OpenMP_VERSION_MAJOR @OpenMP_VERSION_MAJOR@) | ||
set(OpenMP_VERSION_MINOR @OpenMP_VERSION_MINOR@) | ||
set(OpenMP_VERSION @OpenMP_VERSION@) | ||
else() | ||
_openmp_set_version_by_spec_date() | ||
endif() | ||
|
||
foreach(_lang C CXX) | ||
set(OpenMP_${_lang}_FOUND TRUE) | ||
set(OpenMP_${_lang}_SPEC_DATE "${OpenMP_SPEC_DATE}") | ||
set(OpenMP_${_lang}_VERSION_MAJOR "${OpenMP_VERSION_MAJOR}") | ||
set(OpenMP_${_lang}_VERSION_MINOR "${OpenMP_VERSION_MINOR}") | ||
set(OpenMP_${_lang}_VERSION "${OpenMP_VERSION}") | ||
endforeach() | ||
|
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# Check specification version against the requested min version, validate components | ||
include(FindPackageHandleStandardArgs) | ||
find_package_handle_standard_args(OpenMP | ||
VERSION_VAR OpenMP_VERSION | ||
REQUIRED_VARS | ||
OpenMP_C_FLAGS | ||
OpenMP_C_LIB_NAMES | ||
OpenMP_C_SPEC_DATE | ||
OpenMP_C_VERSION | ||
OpenMP_CXX_FLAGS | ||
OpenMP_CXX_LIB_NAMES | ||
OpenMP_CXX_SPEC_DATE | ||
OpenMP_CXX_VERSION | ||
OpenMP_omp_LIBRARY | ||
HANDLE_COMPONENTS | ||
) | ||
set(OPENMP_FOUND ${OpenMP_FOUND}) | ||
set(OpenMP_C_FOUND ${OpenMP_FOUND}) | ||
set(OpenMP_CXX_FOUND ${OpenMP_FOUND}) |
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This is ugly, but a potential alternative of passing the appropriate
-I
/-L
paths together with-fopenmp
did not work due to the-L
flag not getting propagated to the linker when passed viaCMAKE_C_FLAGS
, which is how this is typically used.Fortunately, most modern CMake projects use the OpenMP targets instead and the rest can be patched quite easily. Here's a list of such projects (ticked ones have a patch available): https://gist.github.com/valgur/cbd1a856a2eb42c285a2360ecceb0405
The only project that truly needed the flags variable instead of CMake targets was VTKm: https://gitlab.kitware.com/vtk/vtk-m/-/blob/master/CMake/VTKmDeviceAdapters.cmake#L64