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compiler/gcc: Raise minimum GCC version for kernel builds to 4.8

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It is very rare to see versions of GCC prior to 4.8 being used to build
the mainline kernel. These old compilers are also know to have codegen
issues which can lead to silent miscompilation:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145

Raise the minimum GCC version for kernel build to 4.8 and remove some
tautological Kconfig dependencies as a consequence.

Cc: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Will Deacon
2020-01-22 19:38:21 +00:00
parent 8f3d9f3542
commit 5429ef62bc
6 changed files with 10 additions and 13 deletions
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2
scripts/gcc-plugins/Kconfig
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@@ -8,7 +8,7 @@ config HAVE_GCC_PLUGINS
menuconfig GCC_PLUGINS
bool "GCC plugins"
depends on HAVE_GCC_PLUGINS
depends on CC_IS_GCC && GCC_VERSION >= 40800
depends on CC_IS_GCC
depends on $(success,$(srctree)/scripts/gcc-plugin.sh $(CC))
default y
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