tree 4dd1672d9992cd8d4cfc85b6e7889f2dbad6a1e6
parent 2a61f4747eeaa85ce26ca9fbd81421b15facd018
author Masahiro Yamada <yamada.masahiro@socionext.com> 1527499321 +0900
committer Masahiro Yamada <yamada.masahiro@socionext.com> 1528451761 +0900

kconfig: add CC_IS_GCC and GCC_VERSION

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>