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.masah...@socionext.com>
Reviewed-by: Kees Cook <keesc...@chromium.org>
---

Changes in v4: None
Changes in v3: None
Changes in v2: None

 init/Kconfig | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/init/Kconfig b/init/Kconfig
index 66f0463..c6ac856 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -8,6 +8,14 @@ config DEFCONFIG_LIST
        default ARCH_DEFCONFIG
        default "arch/$(ARCH)/defconfig"
 
+config CC_IS_GCC
+       def_bool $(success, $(CC) --version | 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
-- 
2.7.4

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