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108 lines
3.4 KiB
108 lines
3.4 KiB
# 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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FOUND_VAR JsonCpp_FOUND
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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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set(JSONCPP_FOUND ${JsonCpp_FOUND})
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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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