1a8e43d57d
The `find_package_handle_standard_args(FOUND_VAR)` is deprecated as of CMake 3.3 and both the `<PackageName>_FOUND` and the upper-cased `<PACKAGE_NAME>_FOUND` are set with or without using this option. Additionally, find modules and docs are also synced with this to make it clearer.
106 lines
3.4 KiB
CMake
106 lines
3.4 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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FindJsonCpp
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-----------
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Find JsonCpp includes and library.
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Imported Targets
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^^^^^^^^^^^^^^^^
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An :ref:`imported target <Imported targets>` named
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``JsonCpp::JsonCpp`` is provided if JsonCpp has been found.
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Result Variables
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^^^^^^^^^^^^^^^^
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This module defines the following variables:
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``JsonCpp_FOUND``
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True if JsonCpp was found, false otherwise.
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``JsonCpp_INCLUDE_DIRS``
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Include directories needed to include JsonCpp headers.
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``JsonCpp_LIBRARIES``
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Libraries needed to link to JsonCpp.
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``JsonCpp_VERSION_STRING``
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The version of JsonCpp found.
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May not be set for JsonCpp versions prior to 1.0.
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``JsonCpp_VERSION_MAJOR``
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The major version of JsonCpp.
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``JsonCpp_VERSION_MINOR``
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The minor version of JsonCpp.
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``JsonCpp_VERSION_PATCH``
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The patch version of JsonCpp.
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Cache Variables
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^^^^^^^^^^^^^^^
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This module uses the following cache variables:
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``JsonCpp_LIBRARY``
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The location of the JsonCpp library file.
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``JsonCpp_INCLUDE_DIR``
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The location of the JsonCpp include directory containing ``json/json.h``.
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The cache variables should not be used by project code.
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They may be set by end users to point at JsonCpp components.
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#]=======================================================================]
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#-----------------------------------------------------------------------------
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find_library(JsonCpp_LIBRARY
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NAMES jsoncpp
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)
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mark_as_advanced(JsonCpp_LIBRARY)
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find_path(JsonCpp_INCLUDE_DIR
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NAMES json/json.h
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PATH_SUFFIXES jsoncpp
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)
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mark_as_advanced(JsonCpp_INCLUDE_DIR)
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#-----------------------------------------------------------------------------
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# Extract version number if possible.
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set(_JsonCpp_H_REGEX "^#[ \t]*define[ \t]+JSONCPP_VERSION_STRING[ \t]+\"(([0-9]+)\\.([0-9]+)\\.([0-9]+)[^\"]*)\".*$")
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if(JsonCpp_INCLUDE_DIR AND EXISTS "${JsonCpp_INCLUDE_DIR}/json/version.h")
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file(STRINGS "${JsonCpp_INCLUDE_DIR}/json/version.h" _JsonCpp_H REGEX "${_JsonCpp_H_REGEX}")
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else()
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set(_JsonCpp_H "")
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endif()
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if(_JsonCpp_H MATCHES "${_JsonCpp_H_REGEX}")
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set(JsonCpp_VERSION_STRING "${CMAKE_MATCH_1}")
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set(JsonCpp_VERSION_MAJOR "${CMAKE_MATCH_2}")
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set(JsonCpp_VERSION_MINOR "${CMAKE_MATCH_3}")
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set(JsonCpp_VERSION_PATCH "${CMAKE_MATCH_4}")
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else()
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set(JsonCpp_VERSION_STRING "")
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set(JsonCpp_VERSION_MAJOR "")
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set(JsonCpp_VERSION_MINOR "")
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set(JsonCpp_VERSION_PATCH "")
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endif()
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unset(_JsonCpp_H_REGEX)
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unset(_JsonCpp_H)
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#-----------------------------------------------------------------------------
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include(${CMAKE_CURRENT_LIST_DIR}/../../Modules/FindPackageHandleStandardArgs.cmake)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(JsonCpp
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REQUIRED_VARS JsonCpp_LIBRARY JsonCpp_INCLUDE_DIR
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VERSION_VAR JsonCpp_VERSION_STRING
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)
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#-----------------------------------------------------------------------------
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# Provide documented result variables and targets.
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if(JsonCpp_FOUND)
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set(JsonCpp_INCLUDE_DIRS ${JsonCpp_INCLUDE_DIR})
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set(JsonCpp_LIBRARIES ${JsonCpp_LIBRARY})
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if(NOT TARGET JsonCpp::JsonCpp)
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add_library(JsonCpp::JsonCpp UNKNOWN IMPORTED)
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set_target_properties(JsonCpp::JsonCpp PROPERTIES
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IMPORTED_LOCATION "${JsonCpp_LIBRARY}"
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INTERFACE_INCLUDE_DIRECTORIES "${JsonCpp_INCLUDE_DIRS}"
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IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
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)
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endif()
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endif()
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