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# SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
# SPDX-FileCopyrightText: Bradley M. Bell <bradbell@seanet.com>
# SPDX-FileContributor: 2003-25 Bradley M. Bell
# ----------------------------------------------------------------------------
# initialize list as empty
SET(check_example_multi_thread_depends "")
# Define the operation
# CHECK_LIBRARY_EXISTS (LIBRARY FUNCTION LOCATION VARIABLE)
# LIBRARY - the name of the library you are looking for
# FUNCTION - the name of the function
# LOCATION - location where the library should be found
# VARIABLE - variable to store the result
INCLUDE(CheckLibraryExists)
#
# openmp
IF ( OpenMP_CXX_FOUND )
# OpenMP_CXX_FLAGS - flags to add to the CXX compiler for OpenMP support
ADD_SUBDIRECTORY(openmp)
ENDIF ( OpenMP_CXX_FOUND )
#
# pthread_lib_path
SET( pthread_ok FALSE )
FIND_LIBRARY(pthread_lib_path pthread)
MESSAGE(STATUS "pthread library path = ${pthread_lib_path}")
IF ( pthread_lib_path )
SET(CMAKE_REQUIRED_DEFINITIONS "")
SET(CMAKE_REQUIRED_FLAGS "")
SET(CMAKE_REQUIRED_INCLUDES "")
SET(CMAKE_REQUIRED_LIBRARIES "")
CHECK_LIBRARY_EXISTS(
pthread pthread_barrier_wait ${pthread_lib_path} pthread_ok
)
IF ( pthread_ok )
ADD_SUBDIRECTORY(pthread)
ENDIF ( pthread_ok )
ENDIF ( pthread_lib_path )
IF( NOT pthread_ok )
SET( pthread_lib_path "" )
ENDIF( NOT pthread_ok )
#
# sthread
# Put sthread after pthread because it can somtimes require pthread_lib_path
# https://stackoverflow.com/questions/46994982
ADD_SUBDIRECTORY(sthread)
#
# bthread
IF ( Boost_FOUND )
SET(CMAKE_REQUIRED_DEFINITIONS "")
SET(CMAKE_REQUIRED_FLAGS "")
SET(CMAKE_REQUIRED_INCLUDES "${Boost_INCLUDE_DIRS}")
SET(CMAKE_REQUIRED_LIBRARIES "${Boost_LIBRARIES}")
SET(source "
# include <boost/thread.hpp>
int main(void)
{ boost::barrier wait(1);
return 0;
}"
)
compile_source_test(${cmake_defined_ok} "${source}" boost_multi_thread_ok )
#
IF( boost_multi_thread_ok )
ADD_SUBDIRECTORY(bthread)
ENDIF( boost_multi_thread_ok )
#
ENDIF ( Boost_FOUND )
IF( NOT( "${check_example_multi_thread_depends}" STREQUAL "" ) )
#
# check_example_multi_thread
ADD_CUSTOM_TARGET(
check_example_multi_thread
DEPENDS ${check_example_multi_thread_depends}
)
MESSAGE(STATUS "make check_example_multi_thread: available")
#
# Change check depends in parent environment
add_to_list(check_example_depends check_example_multi_thread)
SET(check_example_depends "${check_example_depends}" PARENT_SCOPE)
#
ENDIF( NOT( "${check_example_multi_thread_depends}" STREQUAL "" ) )
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