1# @HEADER
2# ************************************************************************
3#
4#                        Kokkos v. 3.0
5#       Copyright (2020) National Technology & Engineering
6#               Solutions of Sandia, LLC (NTESS).
7#
8# Under the terms of Contract DE-NA0003525 with NTESS,
9# the U.S. Government retains certain rights in this software.
10#
11# Redistribution and use in source and binary forms, with or without
12# modification, are permitted provided that the following conditions are
13# met:
14#
15# 1. Redistributions of source code must retain the above copyright
16# notice, this list of conditions and the following disclaimer.
17#
18# 2. Redistributions in binary form must reproduce the above copyright
19# notice, this list of conditions and the following disclaimer in the
20# documentation and/or other materials provided with the distribution.
21#
22# 3. Neither the name of the Corporation nor the names of the
23# contributors may be used to endorse or promote products derived from
24# this software without specific prior written permission.
25#
26# THIS SOFTWARE IS PROVIDED BY NTESS "AS IS" AND ANY
27# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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38# Questions? Contact Christian R. Trott (crtrott@sandia.gov)
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40# ************************************************************************
41# @HEADER
42
43
44SET(USE_THREADS FALSE)
45
46IF(NOT TPL_Pthread_INCLUDE_DIRS AND NOT TPL_Pthread_LIBRARY_DIRS AND NOT TPL_Pthread_LIBRARIES)
47  # Use CMake's Thread finder since it is a bit smarter in determining
48  # whether pthreads is already built into the compiler and doesn't need
49  # a library to link.
50  FIND_PACKAGE(Threads)
51  #If Threads found a copy of pthreads make sure it is one of the cases the tribits
52  #tpl system cannot handle.
53  IF(Threads_FOUND AND CMAKE_USE_PTHREADS_INIT)
54    IF(CMAKE_THREAD_LIBS_INIT STREQUAL "" OR CMAKE_THREAD_LIBS_INIT STREQUAL "-pthread")
55      SET(USE_THREADS TRUE)
56    ENDIF()
57  ENDIF()
58ENDIF()
59
60IF(USE_THREADS)
61  SET(TPL_Pthread_INCLUDE_DIRS "")
62  SET(TPL_Pthread_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}")
63  SET(TPL_Pthread_LIBRARY_DIRS "")
64ELSE()
65  KOKKOS_TPL_FIND_INCLUDE_DIRS_AND_LIBRARIES( Pthread
66    REQUIRED_HEADERS pthread.h
67    REQUIRED_LIBS_NAMES pthread
68      )
69ENDIF()
70