--- cmake/dtrace_prelink.cmake.orig	2011-06-21 16:42:39.000000000 +0000
+++ cmake/dtrace_prelink.cmake	2011-07-27 11:48:13.000000000 +0000
@@ -44,7 +44,13 @@
     FILE(STRINGS ${dir}/dtrace_objects  OBJS)
     FOREACH(obj ${OBJS})
       IF(obj)
-        EXECUTE_PROCESS(COMMAND cp ${obj} dtrace_objects_merge)
+        # use original, non modified object
+        IF(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
+            GET_FILENAME_COMPONENT(obj_dest ${obj} NAME)
+            EXECUTE_PROCESS(COMMAND cp ${obj}.orig dtrace_objects_merge/${obj_dest})
+        ELSE()
+            EXECUTE_PROCESS(COMMAND cp ${obj} dtrace_objects_merge)
+        ENDIF()
       ENDIF()
     ENDFOREACH()
   ENDFOREACH()
@@ -62,6 +68,18 @@
   LIST(APPEND REL_OBJECTS ${REL})
 ENDFOREACH()
 
+# there is a bug in dtrace/freebsd. When dtrace -G is running second time on already 
+# processed object it producing broken output. We need to save objects to use them 
+# later on a link stage
+
+IF(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
+    FOREACH(rel_object ${REL_OBJECTS})
+	EXECUTE_PROCESS(
+	     COMMAND cp ${rel_object} ${rel_object}.orig
+	)
+    ENDFOREACH()
+ENDIF()
+
 FILE(WRITE  dtrace_timestamp "")
 EXECUTE_PROCESS(
  COMMAND ${DTRACE} ${DTRACE_FLAGS} -o ${OUTFILE}  -G -s ${DFILE}  ${REL_OBJECTS}