linux-kernel - [PATCH] Makefile: Don't try to add '-fcatch-undefined-behavior' flag

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Date:   Thu,  9 May 2019 04:48:25 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>
Cc:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Arnd Bergmann <arnd@...db.de>,
        Nathan Chancellor <natechancellor@...il.com>
Subject: [PATCH] Makefile: Don't try to add '-fcatch-undefined-behavior' flag

This is no longer a valid option in clang, it was removed in 3.5, which
we don't support.

https://github.com/llvm/llvm-project/commit/cb3f812b6b9fab8f3b41414f24e90222170417b4

Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
---

Let me know if you want this incremental to your patch. I figured it
made more sense to remove this then do the cc-option/cc-disable-warning
removal because it will simplify the commit message.

 Makefile | 1 -
 1 file changed, 1 deletion(-)

diff --git a/Makefile b/Makefile
index d24f5a8009ee..e4788eb2c9b9 100644
--- a/Makefile
+++ b/Makefile
@@ -740,7 +740,6 @@ KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
 # source of a reference will be _MergedGlobals and not on of the whitelisted names.
 # See modpost pattern 2
 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
-KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
 else
 
 # These warnings generated too much noise in a regular build.
-- 
2.21.0