Merge pull request #8 from faodel/topic/fix-ugni-target-redefinition

BUILD: When creating Cray DRC targets, check if the target already exists

cmake/FaodelTPLs.cmake

@@ -306,11 +306,13 @@ elseif( Faodel_NETWORK_LIBRARY STREQUAL "nnti" )
     foreach(drclib ${DRC_PC_LIBRARIES})
       find_library(${drclib}_LIBRARY NAMES ${drclib} HINTS ${DRC_PC_LIBRARY_DIRS})
       if (${drclib}_LIBRARY)
-	add_library( ${drclib} IMPORTED UNKNOWN )
-	set_property( TARGET ${drclib} PROPERTY IMPORTED_LOCATION ${${drclib}_LIBRARY} )
-	set_property( TARGET ${drclib} PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${DRC_PC_INCLUDE_DIRS}" )
-	LIST( APPEND DRC_TARGETS ${drclib} )
-	LIST( APPEND DRC_LIBRARIES ${${drclib}_LIBRARY})
+        if( NOT TARGET ${drclib} )
+          add_library( ${drclib} IMPORTED UNKNOWN )
+          set_property( TARGET ${drclib} PROPERTY IMPORTED_LOCATION ${${drclib}_LIBRARY} )
+          set_property( TARGET ${drclib} PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${DRC_PC_INCLUDE_DIRS}" )
+          LIST( APPEND DRC_TARGETS ${drclib} )
+          LIST( APPEND DRC_LIBRARIES ${${drclib}_LIBRARY})
+        endif ( NOT TARGET ${drclib} )
       endif (${drclib}_LIBRARY)
     endforeach(drclib)
     LIST(APPEND DRC_INCLUDE_DIRS ${DRC_PC_INCLUDE_DIRS})