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authorJosh Poimboeuf <jpoimboe@redhat.com>2017-09-27 17:34:23 -0500
committerIngo Molnar <mingo@kernel.org>2017-09-28 07:23:02 +0200
commitda541b20021c781f8b65492eeaee824e729599eb (patch)
tree43aa23c21680f1f08a07edfa647521de408e811b /scripts
parent9cd6681cb1169e815c41af0265165dd1b872f228 (diff)
download96b-common-da541b20021c781f8b65492eeaee824e729599eb.tar.gz
objtool: Skip unreachable warnings for GCC 4.4 and older
The kbuild bot occasionally reports warnings like: drivers/scsi/pcmcia/aha152x_core.o: warning: objtool: seldo_run()+0x130: unreachable instruction These warnings are always with GCC 4.4. That version of GCC sometimes places unreachable instructions after calls to noreturn functions. The unreachable warnings aren't very important anyway. Just ignore them for old versions of GCC. Reported-by: kbuild test robot <fengguang.wu@intel.com> 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/bc89b807d965b98ec18a0bb94f96a594bd58f2f2.1506551639.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/Makefile.build2
1 files changed, 2 insertions, 0 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 2e3a10e79ca9..061d0c3a420a 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -265,6 +265,8 @@ objtool_args += --no-fp
endif
ifdef CONFIG_GCOV_KERNEL
objtool_args += --no-unreachable
+else
+objtool_args += $(call cc-ifversion, -lt, 0405, --no-unreachable)
endif
# 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory