From a4353898980cc46b28c03fc401d4d916d82c6f4f Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <yamada.masahiro@socionext.com>
Date: Mon, 28 May 2018 18:22:01 +0900
Subject: [PATCH] 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>
---
init/Kconfig | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/init/Kconfig b/init/Kconfig
index 22ca30f6a6bdc..66c8fd1f1d8e3 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 | 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
--
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