provided my own FindJsonRCP.cmake

cmake/FindJsonRcpCpp.cmake

@@ -0,0 +1,46 @@
+# Find json-rcp-cpp 
+#
+# Find the JSONCpp includes and library
+# 
+# if you nee to add a custom library search path, do it via via CMAKE_FIND_ROOT_PATH 
+# 
+# This module defines
+#  JSON_RCP_CPP_INCLUDE_DIRS, where to find json.h, etc.
+#  JSON_RCP_CPP_LIBRARIES, the libraries needed to use jsoncpp.
+#  JSON_RCP_CPP_FOUND, If false, do not try to use jsoncpp.
+
+if (JSON_RPC_CPP_LIBRARIES AND JSON_RPC_CPP_INCLUDE_DIRS)
+  # in cache already
+  set(JSON_RPC_CPP_FOUND TRUE)
+endif()
+
+
+# only look in default directories
+find_path(
+    JSON_RPC_CPP_INCLUDE_DIR 
+    NAMES jsonrpc/rpc.h
+    PATH_SUFFIXES jsonrpc
+    DOC "json-rpc-cpp include dir"
+)
+
+find_library(
+    JSON_RPC_CPP_LIBRARY
+    NAMES jsonrpc
+    DOC "json-rpc-cpp library"
+)
+
+set (JSON_RPC_CPP_INCLUDE_DIRS ${JSON_RPC_CPP_INCLUDE_DIR})
+set (JSON_RPC_CPP_LIBRARIES ${JSON_RPC_CPP_LIBRARY})
+
+include(FindPackageHandleStandardArgs)
+# handle the QUIETLY and REQUIRED arguments and set JSON_RPC_CPP_FOUND to TRUE
+# if all listed variables are TRUE
+find_package_handle_standard_args(json-rpc-cpp DEFAULT_MSG
+     JSON_RPC_CPP_LIBRARY JSON_RPC_CPP_INCLUDE_DIR)                             
+
+
+# include(FindPackageMessage)
+# find_package_message ("json-rpc-cpp" "found" "bla")
+
+
+mark_as_advanced (JSON_RPC_CPP_INCLUDE_DIR JSON_RPC_CPP_LIBRARY)                             

extdep/json-rpc-cpp.cmake

@@ -1,11 +0,0 @@
-ExternalProject_Add(json-rpc-cpp
-	DEPENDS curl
-	GIT_REPOSITORY https://github.com/cinemast/libjson-rpc-cpp.git 
-	GIT_TAG eaca2481e2889d5a5b748383fb02b1d395969cd4
-	BINARY_DIR json-rpc-cpp-prefix/src/json-rpc-cpp
-	CONFIGURE_COMMAND cmake -DCMAKE_INSTALL_PREFIX=${ETH_DEPENDENCY_INSTALL_DIR} -DCMAKE_MODULE_PATH:PATH=${CMAKE_CURRENT_SOURCE_DIR} -DETH_DEPENDENCY_INSTALL_DIR:PATH=${ETH_DEPENDENCY_INSTALL_DIR} -DCMAKE_BUILD_TYPE=None -DCMAKE_FIND_FRAMEWORK=LAST -Wno-dev .
-	BUILD_COMMAND make jsonrpc -j 3
-	INSTALL_COMMAND make install
-	)
-
-