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