Add logging to assimp build script

3rdParty/assimp/CMakeLists.txt

@@ -5,6 +5,7 @@ find_package(assimp QUIET)
 if (assimp_FOUND)
     message("Using system assimp")
 elseif (USE_ASSIMP)
+    message("Building assimp from sources")
     if(NOT DEFINED ASSIMP_REPO)
         set(ASSIMP_REPO https://github.com/assimp/assimp.git)
     endif ()
@@ -33,8 +34,12 @@ endif ()
 function(LinkAssimp TARGET)
     if (NOT assimp_BUILT)
         find_package(assimp QUIET)
+        if (assimp_FOUND)
+            set(ASSIMP_LIB_NAME ${ASSIMP_LIBRARIES})
+        endif ()
     endif ()
     if (assimp_FOUND OR assimp_BUILT)
-        target_link_libraries(${TARGET} PUBLIC assimp)
+        message("Linking assimp: ${ASSIMP_LIB_NAME}")
+        target_link_libraries(${TARGET} PUBLIC ${ASSIMP_LIB_NAME})
     endif ()
 endfunction()