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kconfig: add CC_IS_GCC and GCC_VERSION

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This will be useful to specify the required compiler version,
like this:

config FOO
        bool "Use Foo"
        depends on GCC_VERSION >= 40800
        help
          This feature requires GCC 4.8 or newer.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Masahiro Yamada 2018-05-28 18:22:01 +09:00
parent 2a61f4747e
commit a435389898
1 changed files with 8 additions and 0 deletions
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8
init/Kconfig
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@ -8,6 +8,14 @@ config DEFCONFIG_LIST
default ARCH_DEFCONFIG
default "arch/$(ARCH)/defconfig"
config CC_IS_GCC
def_bool $(success,$(CC) --version | head -n 1 | grep -q gcc)
config GCC_VERSION
int
default $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//') if CC_IS_GCC
default 0
config CONSTRUCTORS
bool
depends on !UML