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authorMasahiro Yamada <masahiroy@kernel.org>2021-02-03 16:52:39 +0900
committerMasahiro Yamada <masahiroy@kernel.org>2021-02-05 17:53:28 +0900
commit315da87c0f99a4741a639782d59dae44878199f5 (patch)
tree88eb0fe7701fd175e29aa39846ea2a847c17b2e5 /Makefile
parent074075aea2ff72dade5231b4ee9f2ab9a055f1ec (diff)
downloadlwn-315da87c0f99a4741a639782d59dae44878199f5.tar.gz
lwn-315da87c0f99a4741a639782d59dae44878199f5.zip
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>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile4
1 files changed, 3 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 89217e4e68c6..97c781cf042b 100644
--- a/Makefile
+++ b/Makefile
@@ -811,10 +811,12 @@ KBUILD_CFLAGS += -ftrivial-auto-var-init=zero
KBUILD_CFLAGS += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
endif
+DEBUG_CFLAGS :=
+
# Workaround for GCC versions < 5.0
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801
ifdef CONFIG_CC_IS_GCC
-DEBUG_CFLAGS := $(call cc-ifversion, -lt, 0500, $(call cc-option, -fno-var-tracking-assignments))
+DEBUG_CFLAGS += $(call cc-ifversion, -lt, 0500, $(call cc-option, -fno-var-tracking-assignments))
endif
ifdef CONFIG_DEBUG_INFO