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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2017-10-03 20:10:36 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-10-04 08:02:18 +0200 |
| commit | 3dd40cb320fee7c23b574ab821ce140ccd1281c9 (patch) | |
| tree | ddc592ec376e781577876d659e559192515a9dbf /Makefile | |
| parent | d81fa669e3de7eb8a631d7d95dac5fbcb2bf9d4e (diff) | |
| download | lwn-3dd40cb320fee7c23b574ab821ce140ccd1281c9.tar.gz lwn-3dd40cb320fee7c23b574ab821ce140ccd1281c9.zip | |
objtool: Upgrade libelf-devel warning to error for CONFIG_ORC_UNWINDER
With CONFIG_ORC_UNWINDER, if the user doesn't have libelf-devel
installed, and they don't see the make warning, their ORC unwinder will
be silently broken. Upgrade the warning to an error.
Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/d9dfc39fb8240998820f9efb233d283a1ee96084.1507079417.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -933,7 +933,11 @@ ifdef CONFIG_STACK_VALIDATION ifeq ($(has_libelf),1) objtool_target := tools/objtool FORCE else - $(warning "Cannot use CONFIG_STACK_VALIDATION, please install libelf-dev, libelf-devel or elfutils-libelf-devel") + ifdef CONFIG_ORC_UNWINDER + $(error "Cannot generate ORC metadata for CONFIG_ORC_UNWINDER=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 |