remove checks, fix interface target

Author: tamaskenez

cmake/carmaDependencyTargets.cmake

@@ -33,21 +33,14 @@ IF (NOT TARGET armadillo AND NOT TARGET armadillo::armadillo)
     ENDIF ()
 ENDIF ()
 IF (NOT TARGET armadillo::armadillo)
-    IF (TARGET armadillo)
-        ADD_LIBRARY(armadillo::armadillo ALIAS armadillo)
-    ELSEIF (Armadillo_FOUND)
-        IF (NOT ARMADILLO_INCLUDE_DIRS OR NOT ARMADILLO_LIBRARIES)
-            message(FATAL_ERROR "Armadillo_FOUND is true but ARMADILLO_INCLUDE_DIRS or ARMADILLO_LIBRARIES are not set.")
-        ENDIF ()
-        ADD_LIBRARY(armadillo::armadillo INTERFACE)
-        TARGET_INCLUDE_DIRECTORIES(armadillo::armadillo INTERFACE ${ARMADILLO_INCLUDE_DIRS})
-        TARGET_LINK_LIBRARIES(armadillo::armadillo INTERFACE ${ARMADILLO_LIBRARIES})
+    IF (Armadillo_FOUND AND NOT TARGET armadillo)
+        ADD_LIBRARY(armadillo INTERFACE)
+        TARGET_INCLUDE_DIRECTORIES(armadillo INTERFACE ${ARMADILLO_INCLUDE_DIRS})
+        TARGET_LINK_LIBRARIES(armadillo INTERFACE ${ARMADILLO_LIBRARIES})
     ENDIF ()
+    ADD_LIBRARY(armadillo::armadillo ALIAS armadillo)
 ENDIF ()
 IF (TARGET armadillo::armadillo)
-    IF (NOT ARMADILLO_INCLUDE_DIRS)
-        message(FATAL_ERROR "armadillo::armadillo is a target but ARMADILLO_INCLUDE_DIRS is not set.")
-    ENDIF ()
     LIST(APPEND carma_INCLUDE_DIRS ${ARMADILLO_INCLUDE_DIRS})
 ENDIF ()