diff options
| -rw-r--r-- | Makefile | 13 | ||||
| -rw-r--r-- | scripts/Makefile.build | 2 |
2 files changed, 14 insertions, 1 deletions
@@ -995,8 +995,19 @@ prepare0: archprepare FORCE # All the preparing.. prepare: prepare0 prepare-objtool +ifdef CONFIG_STACK_VALIDATION + has_libelf := $(shell echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf - &> /dev/null && echo 1 || echo 0) + ifeq ($(has_libelf),1) + objtool_target := tools/objtool FORCE + else + $(warning "Cannot use CONFIG_STACK_VALIDATION, please install libelf-dev or elfutils-libelf-devel") + SKIP_STACK_VALIDATION := 1 + export SKIP_STACK_VALIDATION + endif +endif + PHONY += prepare-objtool -prepare-objtool: $(if $(CONFIG_STACK_VALIDATION), tools/objtool FORCE) +prepare-objtool: $(objtool_target) # Generate some files # --------------------------------------------------------------------------- diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 130a452d42ee..e1bc1907090e 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -242,6 +242,7 @@ cmd_record_mcount = \ endif ifdef CONFIG_STACK_VALIDATION +ifneq ($(SKIP_STACK_VALIDATION),1) __objtool_obj := $(objtree)/tools/objtool/objtool @@ -260,6 +261,7 @@ objtool_obj = $(if $(patsubst y%,, \ $(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n), \ $(__objtool_obj)) +endif # SKIP_STACK_VALIDATION endif # CONFIG_STACK_VALIDATION define rule_cc_o_c |