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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-12-18 06:25:41 +0100 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-12-19 16:04:15 +0100 |
| commit | ef7cfd00b2caf6edeb7f169682b64be2d0a798cf (patch) | |
| tree | 3448db106a760f4c73a22c6d5353069bd3ae4770 | |
| parent | Linux 4.20-rc2 (diff) | |
| download | linux-ef7cfd00b2caf6edeb7f169682b64be2d0a798cf.tar.xz linux-ef7cfd00b2caf6edeb7f169682b64be2d0a798cf.zip | |
kbuild: fix false positive warning/error about missing libelf
For the same reason as commit 25896d073d8a ("x86/build: Fix compiler
support check for CONFIG_RETPOLINE"), you cannot put this $(error ...)
into the parse stage of the top Makefile.
Perhaps I'd propose a more sophisticated solution later, but this is
the best I can do for now.
Link: https://lkml.org/lkml/2017/12/25/211
Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Reported-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
Reported-by: Qian Cai <cai@lca.pw>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Qian Cai <cai@lca.pw>
| -rw-r--r-- | Makefile | 13 |
1 files changed, 8 insertions, 5 deletions
@@ -962,11 +962,6 @@ ifdef CONFIG_STACK_VALIDATION ifeq ($(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 # --------------------------------------------------------------------------- |