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- From: Xiongfeng Wang <xiongfeng.wang@linaro.org>
- Date: Thu, 11 Jan 2018 17:22:29 +0800
- Subject: [PATCH] Kbuild: suppress packed-not-aligned warning for default
- setting only
- gcc-8 reports many -Wpacked-not-aligned warnings. The below are some
- examples.
- ./include/linux/ceph/msgr.h:67:1: warning: alignment 1 of 'struct
- ceph_entity_addr' is less than 8 [-Wpacked-not-aligned]
- } __attribute__ ((packed));
- ./include/linux/ceph/msgr.h:67:1: warning: alignment 1 of 'struct
- ceph_entity_addr' is less than 8 [-Wpacked-not-aligned]
- } __attribute__ ((packed));
- ./include/linux/ceph/msgr.h:67:1: warning: alignment 1 of 'struct
- ceph_entity_addr' is less than 8 [-Wpacked-not-aligned]
- } __attribute__ ((packed));
- This patch suppresses this kind of warnings for default setting.
- Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org>
- Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
- ---
- --- a/scripts/Makefile.extrawarn
- +++ b/scripts/Makefile.extrawarn
- @@ -10,6 +10,8 @@
- # are not supported by all versions of the compiler
- # ==========================================================================
-
- +KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned)
- +
- ifeq ("$(origin W)", "command line")
- export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
- endif
- @@ -25,6 +27,7 @@ warning-1 += -Wold-style-definition
- warning-1 += $(call cc-option, -Wmissing-include-dirs)
- warning-1 += $(call cc-option, -Wunused-but-set-variable)
- warning-1 += $(call cc-option, -Wunused-const-variable)
- +warning-1 += $(call cc-option, -Wpacked-not-aligned)
- warning-1 += $(call cc-disable-warning, missing-field-initializers)
- warning-1 += $(call cc-disable-warning, sign-compare)
-
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