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From: Masahiro Yamada <yamada.masahiro@socionext.com>
To: linux-kbuild@vger.kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Sam Ravnborg <sam@ravnborg.org>,
	Ulf Magnusson <ulfalizer@gmail.com>,
	"Luis R . Rodriguez" <mcgrof@kernel.org>,
	linux-kernel@vger.kernel.org, Nicholas Piggin <npiggin@gmail.com>,
	Kees Cook <keescook@chromium.org>,
	Emese Revfy <re.emese@gmail.com>,
	x86@kernel.org, Masahiro Yamada <yamada.masahiro@socionext.com>
Subject: [PATCH v4 24/31] kconfig: add CC_IS_GCC and GCC_VERSION
Date: Thu, 17 May 2018 15:17:03 +0900	[thread overview]
Message-ID: <1526537830-22606-25-git-send-email-yamada.masahiro@socionext.com> (raw)
In-Reply-To: <1526537830-22606-1-git-send-email-yamada.masahiro@socionext.com>

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>
---

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

  parent reply	other threads:[~2018-05-17  6:20 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-17  6:16 [PATCH v4 00/31] kconfig: move compiler capability tests to Kconfig Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 01/31] kbuild: remove kbuild cache Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 02/31] kbuild: remove CONFIG_CROSS_COMPILE support Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 03/31] kconfig: reference environment variables directly and remove 'option env=' Masahiro Yamada
2018-05-20 15:46   ` Ulf Magnusson
2018-05-21  4:43     ` Masahiro Yamada
2018-05-21 11:06       ` Ulf Magnusson
2018-05-21 11:11         ` Ulf Magnusson
2018-05-24  4:45         ` Masahiro Yamada
2018-05-26 20:47           ` Ulf Magnusson
2018-05-17  6:16 ` [PATCH v4 04/31] kconfig: remove string expansion in file_lookup() Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 05/31] kconfig: remove string expansion for mainmenu after yyparse() Masahiro Yamada
2018-05-20 14:39   ` Sam Ravnborg
2018-05-21  5:38     ` Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 06/31] kconfig: remove sym_expand_string_value() Masahiro Yamada
2018-05-17  6:28   ` Kees Cook
2018-05-17  6:16 ` [PATCH v4 07/31] kconfig: add built-in function support Masahiro Yamada
2018-05-20 14:50   ` Sam Ravnborg
2018-05-21  5:18     ` Masahiro Yamada
2018-05-21  6:16       ` Sam Ravnborg
2018-05-21  6:41         ` Masahiro Yamada
2018-05-21  7:14           ` Sam Ravnborg
2018-05-21 14:23     ` Ulf Magnusson
2018-05-21 14:32       ` Ulf Magnusson
2018-05-21 15:10         ` Ulf Magnusson
2018-05-22  3:11           ` Masahiro Yamada
2018-05-22  4:50             ` Ulf Magnusson
2018-05-22  4:58               ` Ulf Magnusson
2018-05-17  6:16 ` [PATCH v4 08/31] kconfig: add 'shell' built-in function Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 09/31] kconfig: replace $(UNAME_RELEASE) with function call Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 10/31] kconfig: begin PARAM state only when seeing a command keyword Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 11/31] kconfig: support user-defined function and recursively expanded variable Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 12/31] kconfig: support simply " Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 13/31] kconfig: support append assignment operator Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 14/31] kconfig: expand lefthand side of assignment statement Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 15/31] kconfig: add 'info', 'warning', and 'error' built-in functions Masahiro Yamada
2018-05-17  6:38   ` Kees Cook
2018-05-17  6:16 ` [PATCH v4 16/31] kconfig: add 'if' built-in function Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 17/31] kconfig: add 'filename' and 'lineno' built-in variables Masahiro Yamada
2018-05-17  6:39   ` Kees Cook
2018-05-17  6:16 ` [PATCH v4 18/31] kconfig: error out if a recursive variable references itself Masahiro Yamada
2018-05-17  6:16 ` [PATCH v4 19/31] Documentation: kconfig: document a new Kconfig macro language Masahiro Yamada
2018-05-17  6:38   ` Kees Cook
2018-05-17  6:38     ` Kees Cook
2018-05-17  6:55     ` Masahiro Yamada
2018-05-17  6:55       ` Masahiro Yamada
2018-05-26  2:14   ` Randy Dunlap
2018-05-17  6:16 ` [PATCH v4 20/31] kconfig: test: add Kconfig macro language tests Masahiro Yamada
2018-05-17  6:41   ` Kees Cook
2018-05-17  6:48     ` Masahiro Yamada
2018-05-17  6:17 ` [PATCH v4 21/31] kconfig: show compiler version text in the top comment Masahiro Yamada
2018-05-17  6:17 ` [PATCH v4 22/31] kconfig: add basic helper macros to scripts/Kconfig.include Masahiro Yamada
2018-05-17  6:17 ` [PATCH v4 23/31] stack-protector: test compiler capability in Kconfig and drop AUTO mode Masahiro Yamada
2018-05-17  6:26   ` Kees Cook
2018-05-17  6:17 ` Masahiro Yamada [this message]
2018-05-17  6:17 ` [PATCH v4 25/31] kconfig: add CC_IS_CLANG and CLANG_VERSION Masahiro Yamada
2018-05-17  6:17 ` [PATCH v4 26/31] gcov: remove CONFIG_GCOV_FORMAT_AUTODETECT Masahiro Yamada
2018-05-17  6:17 ` [PATCH v4 27/31] kcov: test compiler capability in Kconfig and correct dependency Masahiro Yamada
2018-05-17  6:33   ` Kees Cook
2018-05-17  6:17 ` [PATCH v4 28/31] gcc-plugins: move GCC version check for PowerPC to Kconfig Masahiro Yamada
2018-05-17  6:29   ` Kees Cook
2018-05-17  6:17 ` [PATCH v4 29/31] gcc-plugins: test plugin support in Kconfig and clean up Makefile Masahiro Yamada
2018-05-17  6:32   ` Kees Cook
2018-05-17  6:17 ` [PATCH v4 30/31] gcc-plugins: allow to enable GCC_PLUGINS for COMPILE_TEST Masahiro Yamada
2018-05-17  6:27   ` Kees Cook
2018-05-17  6:17 ` [PATCH v4 31/31] arm64: move GCC version check for ARCH_SUPPORTS_INT128 to Kconfig Masahiro Yamada
2018-05-17  7:51 ` [PATCH v4 00/31] kconfig: move compiler capability tests " Nicholas Piggin
2018-05-17 14:22   ` Masahiro Yamada
2018-05-22  5:37     ` Masahiro Yamada

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