objtool: Add CONFIG_STACK_VALIDATION option

[mirror_ubuntu-artful-kernel.git] / Makefile

diff --git a/Makefile b/Makefile
index fbe1b921798f9c985270ea95dfce7215f5abe8e9..62be03b2add449e5f15a86118c077dacbbf64e4a 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -993,7 +993,10 @@ prepare0: archprepare FORCE
        $(Q)$(MAKE) $(build)=.
 
 # All the preparing..
-prepare: prepare0
+prepare: prepare0 prepare-objtool
+
+PHONY += prepare-objtool
+prepare-objtool: $(if $(CONFIG_STACK_VALIDATION), tools/objtool FORCE)
 
 # Generate some files
 # ---------------------------------------------------------------------------