cmake: find Jsoncpp using pkgconfig

CMakeLists.txt

@@ -46,7 +46,7 @@ if (NOT OPENDHT_ARGON2)
 endif ()
 if (OPENDHT_PROXY_SERVER OR OPENDHT_PROXY_CLIENT)
     find_package(Restbed REQUIRED)
-    find_package(Jsoncpp REQUIRED)
+    pkg_search_module(Jsoncpp jsoncpp)
 endif()
 
 # Build flags
@@ -84,10 +84,14 @@ endif ()
 if (Nettle_INCLUDE_DIRS)
     include_directories (SYSTEM "${Nettle_INCLUDE_DIRS}")
 endif ()
+if (RESTBED_INCLUDE)
+    include_directories (SYSTEM "${RESTBED_INCLUDE}")
+endif ()
 if (Jsoncpp_INCLUDE_DIRS)
     include_directories (SYSTEM "${Jsoncpp_INCLUDE_DIRS}")
 endif ()
 link_directories (${Nettle_LIBRARY_DIRS})
+link_directories (${Jsoncpp_LIBRARY_DIRS})
 include_directories (
     ./
     include/

cmake/FindJsoncpp.cmake

-find_path (JSONCPP_INCLUDE jsoncpp
-           HINTS
-           "/usr/include"
-           "/usr/local/include"
-           "/opt/local/include"
-)
-
-if (JSONCPP_INCLUDE)
-    message(STATUS "${green}Found Jsoncpp: ${JSONCPP_INCLUDE}")
-else()
-    message(FATAL_ERROR "${red}Failed to locate Jsoncpp.}")
-endif()
-
-if (JSONCPP_INCLUDE)
-    set(JSONCPP_FOUND TRUE)
-    set(Jsoncpp_LIBRARIES jsoncpp)
-    set(Jsoncpp_INCLUDE_DIRS ${JSONCPP_INCLUDE}/jsoncpp)
-endif()