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#
# SRT - Secure, Reliable, Transport Copyright (c) 2022 Haivision Systems Inc.
#
# This Source Code Form is subject to the terms of the Mozilla Public License,
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at http://mozilla.org/MPL/2.0/.
#
# Check for C++11 std::put_time().
#
# Sets:
# HAVE_CXX_STD_PUT_TIME
include(CheckCSourceCompiles)
function(CheckCXXStdPutTime)
unset(HAVE_CXX_STD_PUT_TIME CACHE)
set(CMAKE_TRY_COMPILE_TARGET_TYPE EXECUTABLE) # CMake 3.6
unset(CMAKE_REQUIRED_FLAGS)
unset(CMAKE_REQUIRED_LIBRARIES)
unset(CMAKE_REQUIRED_LINK_OPTIONS)
set(CheckCXXStdPutTime_CODE
"
#include <iostream>
#include <iomanip>
#include <ctime>
int main(void)
{
const int result = 0;
std::time_t t = std::time(nullptr);
std::tm tm = *std::localtime(&t);
std::cout
<< std::put_time(&tm, \"%FT%T\")
<< std::setfill('0')
<< std::setw(6)
<< std::endl;
return result;
}
"
)
# NOTE: Should we set -std or use the current compiler configuration.
# It seems that the top level build does not track the compiler
# in a consistent manner. So Maybe we need this?
set(CMAKE_REQUIRED_FLAGS "-std=c++11")
# Check that the compiler can build the std::put_time() example:
message(STATUS "Checking for C++ 'std::put_time()':")
check_cxx_source_compiles(
"${CheckCXXStdPutTime_CODE}"
HAVE_CXX_STD_PUT_TIME)
endfunction(CheckCXXStdPutTime)
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