Add pkgconfig searching for libzmq

cmake/Modules/FindZeroMQ.cmake

@@ -12,6 +12,10 @@
 # Search for the zeromq framework on Apple.
 #CMAKE_FIND_FRAMEWORKS(ZeroMQ)
 
+find_package(PkgConfig)
+pkg_check_modules(PC_LIBZMQ libzmq)
+
+
 IF(WIN32)
 	FIND_LIBRARY(ZEROMQ_DEBUG_LIBRARY
 		NAMES libzmq_d zmq_d
@@ -22,6 +26,7 @@ ENDIF(WIN32)
 
 FIND_LIBRARY(ZEROMQ_LIBRARY
 	NAMES libzmq zmq 
+    HINTS ${PC_LIBZMQ_LIBDIR} ${PC_LIBZMQ_LIBRARY_DIRS}
 	PATHS
 		${ZEROMQ_LIBRARIES}
 		${NSCP_LIBRARYDIR}
@@ -41,6 +46,8 @@ FIND_PATH(ZEROMQ_INCLUDE_DIR
 		${ZEROMQ_INCLUDE_DIRS}
 		${NSCP_INCLUDEDIR}
 		${ZEROMQ_INCLUDE_DIR}
+        ${PC_LIBZMQ_INCLUDEDIR}
+        ${PC_LIBZMQ_INCLUDE_DIRS}
 )
 
 MARK_AS_ADVANCED(