diff --git a/target/sdk/Makefile b/target/sdk/Makefile
index 95ac3be197..3b860db93a 100644
--- a/target/sdk/Makefile
+++ b/target/sdk/Makefile
@@ -94,6 +94,14 @@ $(BIN_DIR)/$(SDK_NAME).tar.xz: clean
 	$(TAR) -cf - -C $(TOPDIR) $(KDIR_BASE)/tools/usb/usbip/ | \
 		$(TAR) -xf - -C $(SDK_BUILD_DIR)
 
+	# Copy objtool executables.  They are required for building external
+	# modules if "Compile-time stack metadata validation" is enabled.
+	if grep -q '^CONFIG_STACK_VALIDATION=y' $(LINUX_DIR)/.config; then \
+		$(TAR) -cf - -C $(TOPDIR) \
+				`cd $(TOPDIR); find $(KDIR_BASE)/tools/objtool -type f -executable` | \
+			$(TAR) -xf - -C $(SDK_BUILD_DIR); \
+	fi
+
 	(cd $(SDK_BUILD_DIR); find $(STAGING_SUBDIR_HOST)/bin $(STAGING_SUBDIR_HOST)/usr/bin \
 		$(STAGING_SUBDIR_TOOLCHAIN)/bin $(STAGING_SUBDIR_TOOLCHAIN)/*/bin $(STAGING_SUBDIR_TOOLCHAIN)/libexec \
 		-type f | $(XARGS) $(SCRIPT_DIR)/bundle-libraries.sh $(SDK_BUILD_DIR)/$(STAGING_SUBDIR_HOST))