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# ==============================================================================
#
# This file is part of the JUCE framework.
# Copyright (c) Raw Material Software Limited
#
# JUCE is an open source framework subject to commercial or open source
# licensing.
#
# By downloading, installing, or using the JUCE framework, or combining the
# JUCE framework with any other source code, object code, content or any other
# copyrightable work, you agree to the terms of the JUCE End User Licence
# Agreement, and all incorporated terms including the JUCE Privacy Policy and
# the JUCE Website Terms of Service, as applicable, which will bind you. If you
# do not agree to the terms of these agreements, we will not license the JUCE
# framework to you, and you must discontinue the installation or download
# process and cease use of the JUCE framework.
#
# JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
# JUCE Privacy Policy: https://juce.com/juce-privacy-policy
# JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
#
# Or:
#
# You may also use this code under the terms of the AGPLv3:
# https://www.gnu.org/licenses/agpl-3.0.en.html
#
# THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
# WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
# MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
#
# ==============================================================================
function(_juce_create_atomic_target target_name)
add_library("${target_name}" INTERFACE)
add_library("juce::${target_name}" ALIAS "${target_name}")
if(NOT ((CMAKE_SYSTEM_NAME STREQUAL "Linux") OR (CMAKE_SYSTEM_NAME MATCHES ".*BSD")))
return()
endif()
set(test_atomic_with_is_lock_free_file_contents
[[
#include <atomic>
int main (int argc, char** argv)
{
std::atomic<long long> ll { static_cast<long long> (argc) };
ll ^= static_cast<long long> (ll.is_lock_free());
return static_cast<int> (ll);
}
]])
set(test_simple_atomic_file_contents
[[
#include <atomic>
int main (int argc, char** argv)
{
std::atomic<long long> ll { static_cast<long long> (argc) };
ll ^= 1;
return static_cast<int> (ll);
}
]])
string(RANDOM LENGTH 16 random_file_string)
set(test_file_name "${CMAKE_CURRENT_BINARY_DIR}/check_atomic_${random_file_string}.cpp")
string(RANDOM LENGTH 16 random_dir_string)
set(test_bindir "${CMAKE_CURRENT_BINARY_DIR}/check_atomic_dir_${random_dir_string}")
file(WRITE "${test_file_name}" "${test_atomic_with_is_lock_free_file_contents}")
try_compile(compile_result "${test_bindir}" "${test_file_name}"
OUTPUT_VARIABLE test_build_output_0
CXX_STANDARD 17
CXX_STANDARD_REQUIRED TRUE
CXX_EXTENSIONS FALSE)
if(NOT compile_result)
try_compile(compile_result "${test_bindir}" "${test_file_name}"
OUTPUT_VARIABLE test_build_output_1
LINK_LIBRARIES atomic
CXX_STANDARD 17
CXX_STANDARD_REQUIRED TRUE
CXX_EXTENSIONS FALSE)
if (NOT compile_result)
file(WRITE "${test_file_name}" "${test_simple_atomic_file_contents}")
try_compile(compile_result "${test_bindir}" "${test_file_name}"
OUTPUT_VARIABLE test_build_output_2
LINK_LIBRARIES atomic
CXX_STANDARD 17
CXX_STANDARD_REQUIRED TRUE
CXX_EXTENSIONS FALSE)
if (NOT compile_result)
message(FATAL_ERROR
"First build output:\n"
"${test_build_output_0}"
"\n\nSecond build output:\n"
"${test_build_output_1}"
"\n\nThird build output:\n"
"${test_build_output_2}"
"\n\nJUCE requires support for std::atomic, but this system cannot "
"successfully compile a program which uses std::atomic. "
"You may need to install a dedicated libatomic package using your "
"system's package manager.")
else()
message(WARNING
"First build output:\n"
"${test_build_output_0}"
"\n\nSecond build output:\n"
"${test_build_output_1}"
"\n\nIf you are seeing this warning it means that the libatomic library"
"on this system doesn't support is_lock_free."
"Please let the JUCE team know.")
endif()
endif()
target_link_libraries("${target_name}" INTERFACE atomic)
endif()
file(REMOVE "${test_file_name}")
file(REMOVE_RECURSE "${test_bindir}")
endfunction()
_juce_create_atomic_target(juce_atomic_wrapper)
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