kbuild: fix duplicated flags in DEBUG_CFLAGS
authorMasahiro Yamada <masahiroy@kernel.org>
Wed, 3 Feb 2021 07:52:39 +0000 (16:52 +0900)
committerMasahiro Yamada <masahiroy@kernel.org>
Fri, 5 Feb 2021 08:53:28 +0000 (17:53 +0900)
commit315da87c0f99a4741a639782d59dae44878199f5
tree88eb0fe7701fd175e29aa39846ea2a847c17b2e5
parent074075aea2ff72dade5231b4ee9f2ab9a055f1ec
kbuild: fix duplicated flags in DEBUG_CFLAGS

Sedat Dilek noticed duplicated flags in DEBUG_CFLAGS when building
deb-pkg with CONFIG_DEBUG_INFO. For example, 'make CC=clang bindeb-pkg'
reproduces the issue.

Kbuild recurses to the top Makefile for some targets such as package
builds.

With commit 121c5d08d53c ("kbuild: Only add -fno-var-tracking-assignments
for old GCC versions") applied, DEBUG_CFLAGS is now reset only when
CONFIG_CC_IS_GCC=y.

Fix it to reset DEBUG_CFLAGS all the time.

Fixes: 121c5d08d53c ("kbuild: Only add -fno-var-tracking-assignments for old GCC versions")
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Mark Wielaard <mark@klomp.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Makefile