public void buildLib(File appDir) throws AndrolibException { File working = new File(appDir, "lib"); if (!working.exists()) { return; } File stored = new File(appDir, APK_DIRNAME + "/lib"); if (apkOptions.forceBuildAll || isModified(working, stored)) { LOGGER.info("Copying libs..."); try { OS.rmdir(stored); OS.cpdir(working, stored); } catch (BrutException ex) { throw new AndrolibException(ex); } } }