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authorBrad King <brad.king@kitware.com>2015-01-16 19:11:38 (GMT)
committerBrad King <brad.king@kitware.com>2015-01-19 14:34:03 (GMT)
commit0aebeb9c84086b19c56a3ced5c95c60063ab37e2 (patch)
treea4db2166cabd84853f9c7487c0fe875f59316b38 /Modules/FindJsonCpp.cmake
parent287070ceb8eda82cf58595c9ea2dde57b0d6d45e (diff)
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FindJsonCpp: Add module to find JsonCpp package
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+#[=======================================================================[.rst:
+FindJsonCpp
+-----------
+
+Find JsonCpp includes and library.
+
+Imported Targets
+^^^^^^^^^^^^^^^^
+
+An :ref:`imported target <Imported targets>` named
+``JsonCpp::JsonCpp`` is provided if JsonCpp has been found.
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This module defines the following variables:
+
+``JsonCpp_FOUND``
+ True if JsonCpp was found, false otherwise.
+``JsonCpp_INCLUDE_DIRS``
+ Include directories needed to include JsonCpp headers.
+``JsonCpp_LIBRARIES``
+ Libraries needed to link to JsonCpp.
+``JsonCpp_VERSION_STRING``
+ The version of JsonCpp found.
+ May not be set for JsonCpp versions prior to 1.0.
+``JsonCpp_VERSION_MAJOR``
+ The major version of JsonCpp.
+``JsonCpp_VERSION_MINOR``
+ The minor version of JsonCpp.
+``JsonCpp_VERSION_PATCH``
+ The patch version of JsonCpp.
+
+Cache Variables
+^^^^^^^^^^^^^^^
+
+This module uses the following cache variables:
+
+``JsonCpp_LIBRARY``
+ The location of the JsonCpp library file.
+``JsonCpp_INCLUDE_DIR``
+ The location of the JsonCpp include directory containing ``json/json.h``.
+
+The cache variables should not be used by project code.
+They may be set by end users to point at JsonCpp components.
+#]=======================================================================]
+
+#=============================================================================
+# Copyright 2014-2015 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+# License text for the above reference.)
+
+#-----------------------------------------------------------------------------
+find_library(JsonCpp_LIBRARY
+ NAMES jsoncpp
+ )
+mark_as_advanced(JsonCpp_LIBRARY)
+
+find_path(JsonCpp_INCLUDE_DIR
+ NAMES json/json.h
+ PATH_SUFFIXES jsoncpp
+ )
+mark_as_advanced(JsonCpp_INCLUDE_DIR)
+
+#-----------------------------------------------------------------------------
+# Extract version number if possible.
+set(_JsonCpp_H_REGEX "^#[ \t]*define[ \t]+JSONCPP_VERSION_STRING[ \t]+\"(([0-9]+)\\.([0-9]+)\\.([0-9]+)[^\"]*)\".*$")
+if(JsonCpp_INCLUDE_DIR AND EXISTS "${JsonCpp_INCLUDE_DIR}/json/version.h")
+ file(STRINGS "${JsonCpp_INCLUDE_DIR}/json/version.h" _JsonCpp_H REGEX "${_JsonCpp_H_REGEX}")
+else()
+ set(_JsonCpp_H "")
+endif()
+if(_JsonCpp_H MATCHES "${_JsonCpp_H_REGEX}")
+ set(JsonCpp_VERSION_STRING "${CMAKE_MATCH_1}")
+ set(JsonCpp_VERSION_MAJOR "${CMAKE_MATCH_2}")
+ set(JsonCpp_VERSION_MINOR "${CMAKE_MATCH_3}")
+ set(JsonCpp_VERSION_PATCH "${CMAKE_MATCH_4}")
+else()
+ set(JsonCpp_VERSION_STRING "")
+ set(JsonCpp_VERSION_MAJOR "")
+ set(JsonCpp_VERSION_MINOR "")
+ set(JsonCpp_VERSION_PATCH "")
+endif()
+unset(_JsonCpp_H_REGEX)
+unset(_JsonCpp_H)
+
+#-----------------------------------------------------------------------------
+include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(JsonCpp
+ FOUND_VAR JsonCpp_FOUND
+ REQUIRED_VARS JsonCpp_LIBRARY JsonCpp_INCLUDE_DIR
+ VERSION_VAR JsonCpp_VERSION_STRING
+ )
+set(JSONCPP_FOUND ${JsonCpp_FOUND})
+
+#-----------------------------------------------------------------------------
+# Provide documented result variables and targets.
+if(JsonCpp_FOUND)
+ set(JsonCpp_INCLUDE_DIRS ${JsonCpp_INCLUDE_DIR})
+ set(JsonCpp_LIBRARIES ${JsonCpp_LIBRARY})
+ if(NOT TARGET JsonCpp::JsonCpp)
+ add_library(JsonCpp::JsonCpp UNKNOWN IMPORTED)
+ set_target_properties(JsonCpp::JsonCpp PROPERTIES
+ IMPORTED_LOCATION "${JsonCpp_LIBRARY}"
+ INTERFACE_INCLUDE_DIRECTORIES "${JsonCpp_INCLUDE_DIRS}"
+ IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
+ )
+ endif()
+endif()