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| author | Robert Wing <rew@FreeBSD.org> | 2022-04-05 21:28:54 +0000 |
|---|---|---|
| committer | Robert Wing <rew@FreeBSD.org> | 2022-04-05 21:34:34 +0000 |
| commit | e8e691983bb75e80153b802f47733f1531615fa2 (patch) | |
| tree | ed8f6f14005e69e8738b2cab14771b0f35323320 | |
| parent | 56cc89585d392d8c8f120b2e4b8faa7df236b4ea (diff) | |
| download | src-e8e691983bb75e80153b802f47733f1531615fa2.tar.gz src-e8e691983bb75e80153b802f47733f1531615fa2.zip | |
suppress set but not used warnings for kernel builds
Use -Wno-unused-but-set-variable for kernel builds with clang13.
To turn this warning back on, set the following in src.conf:
WITH_SET_BUT_NOTUSED_KERNEL_WARNINGS=
Reviewed by: mjg, imp
Differential Revision: https://reviews.freebsd.org/D34784
| -rw-r--r-- | sys/conf/kern.mk | 6 | ||||
| -rw-r--r-- | sys/conf/kern.opts.mk | 3 |
2 files changed, 7 insertions, 2 deletions
diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk index f97be774ea10..67756b7fb986 100644 --- a/sys/conf/kern.mk +++ b/sys/conf/kern.mk @@ -43,7 +43,11 @@ CWARNEXTRA?= -Wno-error=tautological-compare -Wno-error=empty-body \ CWARNEXTRA+= -Wno-error=shift-negative-value CWARNEXTRA+= -Wno-address-of-packed-member .if ${COMPILER_VERSION} >= 130000 -CWARNFLAGS+= -Wno-error=unused-but-set-variable +.if ${MK_SET_BUT_NOTUSED_KERNEL_WARNINGS} == "no" +CWARNEXTRA+= ${NO_WUNUSED_BUT_SET_VARIABLE} +.else +CWARNEXTRA+= -Wno-error=unused-but-set-variable +.endif .endif .endif # clang diff --git a/sys/conf/kern.opts.mk b/sys/conf/kern.opts.mk index 077009baebf0..19789180ee93 100644 --- a/sys/conf/kern.opts.mk +++ b/sys/conf/kern.opts.mk @@ -60,7 +60,8 @@ __DEFAULT_NO_OPTIONS = \ INIT_ALL_ZERO \ KERNEL_RETPOLINE \ RATELIMIT \ - REPRODUCIBLE_BUILD + REPRODUCIBLE_BUILD \ + SET_BUT_NOTUSED_KERNEL_WARNINGS # Some options are totally broken on some architectures. We disable # them. If you need to enable them on an experimental basis, you |