xref: /oneTBB/cmake/resumable_tasks.cmake (revision 3ca0656d) 
1# Copyright (c) 2023 Intel Corporation
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#     http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15include(CheckSymbolExists)
16
17if (UNIX)
18    set(CMAKE_REQUIRED_FLAGS -Wno-deprecated-declarations)
19    if (APPLE)
20        set(CMAKE_REQUIRED_DEFINITIONS -D_XOPEN_SOURCE)
21    endif()
22
23    check_symbol_exists("getcontext" "ucontext.h" _tbb_have_ucontext)
24    if (NOT _tbb_have_ucontext)
25        set(TBB_RESUMABLE_TASKS_USE_THREADS "__TBB_RESUMABLE_TASKS_USE_THREADS=1")
26    endif()
27
28    unset(_tbb_have_ucontext)
29    unset(CMAKE_REQUIRED_DEFINITIONS)
30    unset(CMAKE_REQUIRED_FLAGS)
31endif()
32