diff options
| author | Will Deacon <will@kernel.org> | 2020-01-22 19:38:21 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-04-15 21:36:20 +0100 |
| commit | 5429ef62bcf360aae06740cbe065be01e5cfb6fc (patch) | |
| tree | 5b9078d844f38350b67e5e4c96b414aaf5acc56d /include/linux/compiler-gcc.h | |
| parent | 8f3d9f354286745c751374f5f1fcafee6b3f3136 (diff) | |
compiler/gcc: Raise minimum GCC version for kernel builds to 4.8
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>
Diffstat (limited to 'include/linux/compiler-gcc.h')
| -rw-r--r-- | include/linux/compiler-gcc.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index d7ee4c6bad48..e2f725273261 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -10,7 +10,8 @@ + __GNUC_MINOR__ * 100 \ + __GNUC_PATCHLEVEL__) -#if GCC_VERSION < 40600 +/* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145 */ +#if GCC_VERSION < 40800 # error Sorry, your compiler is too old - please upgrade it. #endif @@ -126,9 +127,7 @@ #if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP) && !defined(__CHECKER__) #define __HAVE_BUILTIN_BSWAP32__ #define __HAVE_BUILTIN_BSWAP64__ -#if GCC_VERSION >= 40800 #define __HAVE_BUILTIN_BSWAP16__ -#endif #endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP && !__CHECKER__ */ #if GCC_VERSION >= 70000 |