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Kbuild fixes for v4.20 (2nd) 

- fix false positive warning/error about missing library for objtool
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Merge tag 'kbuild-fixes-v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fix from Masahiro Yamada:
 "Fix false positive warning/error about missing library for objtool"

* tag 'kbuild-fixes-v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: fix false positive warning/error about missing libelf
This commit is contained in:
Linus Torvalds 2018-12-20 07:33:09 -08:00
parent 122b7e3380 ef7cfd00b2
commit c0f3ece465
1 changed files with 8 additions and 5 deletions
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13
Makefile
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@ -962,11 +962,6 @@ ifdef CONFIG_STACK_VALIDATION
ifeq ($(has_libelf),1)
objtool_target := tools/objtool FORCE
else
ifdef CONFIG_UNWINDER_ORC
$(error "Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel")
else
$(warning "Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel")
endif
SKIP_STACK_VALIDATION := 1
export SKIP_STACK_VALIDATION
endif
@ -1125,6 +1120,14 @@ uapi-asm-generic:
PHONY += prepare-objtool
prepare-objtool: $(objtool_target)
ifeq ($(SKIP_STACK_VALIDATION),1)
ifdef CONFIG_UNWINDER_ORC
@echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2
@false
else
@echo "warning: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2
endif
endif
# Generate some files
# ---------------------------------------------------------------------------