From: Bill Prendergast <dek.devel@baisenvar.info>

* enable import of meson compiled jsoncpp cmake module

--- a/cmake_modules/FindJsonCpp.cmake
+++ b/cmake_modules/FindJsonCpp.cmake
@@ -35,6 +35,11 @@
 # (See accompanying file LICENSE_1_0.txt or copy at
 # http://www.boost.org/LICENSE_1_0.txt)
 
+# fail if IMPORTED_LOCATION not set, rather than setting to jsoncpp-NOTFOUND
+if(POLICY CMP0111)
+	cmake_policy(SET CMP0111 NEW)
+endif()
+
 set(__jsoncpp_have_namespaced_targets OFF)
 set(__jsoncpp_have_interface_support OFF)
 if(NOT ("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 3.0))
@@ -169,6 +174,10 @@ if(jsoncpp_FOUND AND NOT __jsoncpp_info_string STREQUAL "${JSONCPP_CACHED_JSONCP
 		if(__jsoncpp_interface_include_dirs)
 			set(JSONCPP_IMPORTED_INCLUDE_DIRS "${__jsoncpp_interface_include_dirs}" CACHE INTERNAL "" FORCE)
 		endif()
+		get_property(__jsoncpp_imported_location TARGET jsoncpp_lib PROPERTY IMPORTED_LOCATION)
+		if(__jsoncpp_imported_location)
+			set(JSONCPP_IMPORTED_LOCATION "${__jsoncpp_imported_location}" CACHE INTERNAL "" FORCE)
+		endif()
 	endif()
 	if(TARGET jsoncpp_lib_static AND NOT JSONCPP_IMPORTED_INCLUDE_DIRS)
 		get_property(__jsoncpp_interface_include_dirs TARGET jsoncpp_lib_static PROPERTY INTERFACE_INCLUDE_DIRECTORIES)
@@ -255,6 +264,12 @@ if(JSONCPP_FOUND)
 	endif()
 
 	set(JSONCPP_LIBRARY ${JSONCPP_IMPORTED_LIBRARY})
+	set_target_properties(jsoncpp_lib PROPERTIES
+		IMPORTED_LOCATION_RELEASE "${JSONCPP_IMPORTED_LOCATION}"
+		IMPORTED_LOCATION_RELWITHDEBINFO "${JSONCPP_IMPORTED_LOCATION}"
+		IMPORTED_LOCATION_MINSIZEREL "${JSONCPP_IMPORTED_LOCATION}"
+		IMPORTED_LOCATION_NONE "${JSONCPP_IMPORTED_LOCATION}"
+		IMPORTED_LOCATION_DEBUG "${JSONCPP_IMPORTED_LOCATION}")
 	set(JSONCPP_INCLUDE_DIRS ${JSONCPP_IMPORTED_INCLUDE_DIRS})
 	if(DEFINED JSONCPP_IMPORTED_LIBRARY_IS_SHARED)
 		set(JSONCPP_LIBRARY_IS_SHARED ${JSONCPP_IMPORTED_LIBRARY_IS_SHARED})