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84 lines
3.4 KiB
CMake
84 lines
3.4 KiB
CMake
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#.rst:
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# FindHinnantDate
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# ---------------
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#
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# This module finds Howard Hinnant's date and time library for C++11 and beyond
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# See https://github.com/HowardHinnant/date for details.
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#
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# This will define the following variables::
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#
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# HinnantDate_FOUND - True if the system has the library
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# HinnantDate_INCLUDE_DIR - The directory which includes the header
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#
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# and the following imported targets::
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#
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# HinnantDate::Date - The target to use date.h
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#
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# The target will enable the required C++11 standard in your compiler. You can
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# use any later standard but you have to enable them explicitly.
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# Copyright (c) 2016 Christian Dávid
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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#
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# Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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cmake_minimum_required(VERSION 3.1)
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find_file(HinnantDate_INCLUDE_FILE
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date.h
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HINTS ${HinnantDate_INCLUDE_DIR}
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)
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if (HinnantDate_INCLUDE_FILE)
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# Validate that correct file is found
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file(STRINGS ${HinnantDate_INCLUDE_FILE} check_result
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LIMIT_COUNT 1
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REGEX "^ *// Copyright [(]c[)] 2015.* Howard Hinnant *$"
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)
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if("${check_result}" STREQUAL "")
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message(STATUS "FindHinnantDate: Rejecting found '${HinnantDate_INCLUDE_FILE}', it seems to be a name twin.")
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unset(HinnantDate_INCLUDE_FILE)
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else()
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# Check succeeded, create target
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get_filename_component(HinnantDate_INCLUDE_DIR "${HinnantDate_INCLUDE_FILE}" DIRECTORY CACHE)
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if(NOT TARGET HinnantDate::Date)
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add_library(HinnantDate::Date INTERFACE IMPORTED)
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set_target_properties(HinnantDate::Date PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${HinnantDate_INCLUDE_DIR}"
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INTERFACE_COMPILE_FEATURES "cxx_auto_type;cxx_static_assert;cxx_decltype;cxx_alias_templates;cxx_strong_enums"
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# Due to cmake restrictions the standard cannot be set directly to interface imported targets. Instead required compile
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# features are set (list maybe incomplete). Please note that this list shall be a minimal set of required features.
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# CXX_STANDARD 11
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# CXX_STANDARD_REQUIRED true
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)
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endif()
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endif()
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(HinnantDate
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REQUIRED_VARS
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HinnantDate_INCLUDE_DIR
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)
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