Commit a37c45cd authored Apr 25, 2017 by Michael Davidson Committed by Masahiro Yamada Apr 28, 2017

kbuild: clang: add -no-integrated-as to KBUILD_[AC]FLAGS

The Linux Kernel relies on GCC's acceptance of inline assembly as an
opaque object which will not have any validation performed on the content.
The current behaviour in LLVM is to perform validation of the contents by
means of parsing the input if the MC layer can handle it.

Disable clangs integrated assembler and use the GNU assembler instead.

Wording-mostly-from: Saleem Abdulrasool <compnerd@compnerd.org>
Signed-off-by: Michael Davidson <md@google.com>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

parent 433db3e2

Makefile

+2 −0

Original line number	Diff line number	Diff line
		@@ -708,6 +708,8 @@ KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
		# See modpost pattern 2
		KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
		KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
		KBUILD_CFLAGS += $(call cc-option, -no-integrated-as)
		KBUILD_AFLAGS += $(call cc-option, -no-integrated-as)
		else

		# These warnings generated too much noise in a regular build.

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