cmake: when building, tell people if serial support exists

If we found libserialport (or didn't find it) tell people.

Signed-off-by: Robin Getz <[email protected]>

Author: rgetz

CMakeLists.txt

@@ -244,6 +244,7 @@ if (LIBSERIALPORT_LIBRARIES AND LIBSERIALPORT_INCLUDE_DIR)
 			message(WARNING "The installed version of libserialport is too old. The minimum version supported is 0.1.1. Disabling Serial support.")
 			SET(WITH_SERIAL_BACKEND OFF)
 		else()
+			message(STATUS "Looking for libserialport : Found")
 			list(APPEND LIBIIO_CFILES serial.c)
 			list(APPEND LIBS_TO_LINK ${LIBSERIALPORT_LIBRARIES})
 
@@ -254,6 +255,8 @@ if (LIBSERIALPORT_LIBRARIES AND LIBSERIALPORT_INCLUDE_DIR)
 			include_directories(${LIBSERIALPORT_INCLUDE_DIR})
 		endif()
 	endif()
+else()
+	message(STATUS "Looking for libserialport : Failed; building without serial")
 endif()
 
 include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR})