guard external library copy

Author: markaren

cmake/generate_fmu.cmake

@@ -137,15 +137,18 @@ function(generateFMU modelIdentifier)
 
             foreach (dep IN LISTS FMU_LINK_TARGETS)
                 if (TARGET ${dep})
-                    add_custom_command(TARGET ${versionTarget} POST_BUILD
-                            WORKING_DIRECTORY "${modelOutputDir}"
-                            COMMAND ${CMAKE_COMMAND} -E echo "[generateFMU-${fmiVersion}] Copying runtime of ${dep} to ${binaryOutputDir}"
-                            COMMAND ${CMAKE_COMMAND} -E make_directory "${binaryOutputDir}"
-                            # copy the target's runtime file (dll/so/dylib) into the binaries folder
-                            COMMAND ${CMAKE_COMMAND} -E copy_if_different
-                            $<TARGET_FILE:${dep}>
-                            "${binaryOutputDir}/$<TARGET_FILE_NAME:${dep}>"
-                    )
+                    get_target_property(target_type ${dep} TYPE)
+                    if (NOT "${target_type}" STREQUAL "INTERFACE_LIBRARY")
+                        add_custom_command(TARGET ${versionTarget} POST_BUILD
+                                WORKING_DIRECTORY "${modelOutputDir}"
+                                COMMAND ${CMAKE_COMMAND} -E echo "[generateFMU-${fmiVersion}] Copying runtime of ${dep} to ${binaryOutputDir}"
+                                COMMAND ${CMAKE_COMMAND} -E make_directory "${binaryOutputDir}"
+                                # copy the target's runtime file (dll/so/dylib) into the binaries folder
+                                COMMAND ${CMAKE_COMMAND} -E copy_if_different
+                                $<TARGET_FILE:${dep}>
+                                "${binaryOutputDir}/$<TARGET_FILE_NAME:${dep}>"
+                        )
+                    endif ()
                 endif ()
             endforeach ()
         endif ()