diff options
| author | Masahiro Yamada <masahiroy@kernel.org> | 2020-09-10 22:44:29 +0900 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2020-09-25 00:36:50 +0900 |
| commit | bb2732112bc52bed7b20b9fc59d7246e4e7ce5ed (patch) | |
| tree | 82ed0d438c401b482494e4b84457c714f27d7cc6 /scripts/Makefile.ubsan | |
| parent | 9909b7681222299dcb6f3b0613c30a65498b6c72 (diff) | |
kbuild: move CFLAGS_{KASAN,UBSAN,KCSAN} exports to relevant Makefiles
Move CFLAGS_KASAN*, CFLAGS_UBSAN, CFLAGS_KCSAN to Makefile.kasan,
Makefile.ubsan, Makefile.kcsan, respectively.
This commit also avoids the same -fsanitize=* flags being added to
CFLAGS_UBSAN multiple times.
Prior to this commit, the ubsan flags were appended by the '+='
operator, without any initialization. Some build targets such as
'make bindeb-pkg' recurses to the top Makefile, and ended up with
adding the same flags to CFLAGS_UBSAN twice.
Clear CFLAGS_UBSAN with ':=' to make it a simply expanded variable.
This is better than a recursively expanded variable, which evaluates
$(call cc-option, ...) multiple times before Kbuild starts descending
to subdirectories.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Marco Elver <elver@google.com>
Diffstat (limited to 'scripts/Makefile.ubsan')
| -rw-r--r-- | scripts/Makefile.ubsan | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan index 27348029b2b8..c661484ee01f 100644 --- a/scripts/Makefile.ubsan +++ b/scripts/Makefile.ubsan @@ -1,4 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 + +export CFLAGS_UBSAN := + ifdef CONFIG_UBSAN_ALIGNMENT CFLAGS_UBSAN += $(call cc-option, -fsanitize=alignment) endif |