From: Masahiro Yamada <yamada.masahiro@socionext.com>
To: linux-kbuild@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Kees Cook <keescook@chromium.org>,
Nicholas Piggin <npiggin@gmail.com>,
"Luis R . Rodriguez" <mcgrof@suse.com>,
Randy Dunlap <rdunlap@infradead.org>,
Ulf Magnusson <ulfalizer@gmail.com>,
Sam Ravnborg <sam@ravnborg.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Masahiro Yamada <yamada.masahiro@socionext.com>
Subject: [PATCH v5 22/31] kconfig: add basic helper macros to scripts/Kconfig.include
Date: Mon, 28 May 2018 18:21:59 +0900 [thread overview]
Message-ID: <1527499328-13213-23-git-send-email-yamada.masahiro@socionext.com> (raw)
In-Reply-To: <1527499328-13213-1-git-send-email-yamada.masahiro@socionext.com>
Kconfig got text processing tools like we see in Make. Add Kconfig
helper macros to scripts/Kconfig.include like we collect Makefile
macros in scripts/Kbuild.include.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Ulf Magnusson <ulfalizer@gmail.com>
---
Changes in v5:
- Add dollar, right_paren, left_paren variables
Changes in v4:
- source scripts/Kconfig.include
from arch/x86/um/Kconfig since UML is special
- Use { $(1); } for 'success' macro for better performance
- Use -E instead of -c for 'cc-option' macro for better performance
- Add 'if-success' macro
Changes in v3:
- Move helpers to scripts/Kconfig.include
Changes in v2: None
Kconfig | 2 ++
MAINTAINERS | 1 +
arch/x86/um/Kconfig | 2 ++
scripts/Kconfig.include | 27 +++++++++++++++++++++++++++
4 files changed, 32 insertions(+)
create mode 100644 scripts/Kconfig.include
diff --git a/Kconfig b/Kconfig
index 5b55d87..a90d9f9 100644
--- a/Kconfig
+++ b/Kconfig
@@ -7,4 +7,6 @@ mainmenu "Linux/$(ARCH) $(KERNELVERSION) Kernel Configuration"
comment "Compiler: $(CC_VERSION_TEXT)"
+source "scripts/Kconfig.include"
+
source "arch/$(SRCARCH)/Kconfig"
diff --git a/MAINTAINERS b/MAINTAINERS
index b87723a..79decb1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7639,6 +7639,7 @@ L: linux-kbuild@vger.kernel.org
S: Maintained
F: Documentation/kbuild/kconfig*
F: scripts/kconfig/
+F: scripts/Kconfig.include
KDUMP
M: Dave Young <dyoung@redhat.com>
diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig
index a992f8e..9d529f2 100644
--- a/arch/x86/um/Kconfig
+++ b/arch/x86/um/Kconfig
@@ -3,6 +3,8 @@ mainmenu "User Mode Linux/$(SUBARCH) $(KERNELVERSION) Kernel Configuration"
comment "Compiler: $(CC_VERSION_TEXT)"
+source "scripts/Kconfig.include"
+
source "arch/um/Kconfig.common"
menu "UML-specific options"
diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
new file mode 100644
index 0000000..bf7c0c9
--- /dev/null
+++ b/scripts/Kconfig.include
@@ -0,0 +1,27 @@
+# Kconfig helper macros
+
+# Convenient variables
+comma := ,
+quote := "
+squote := '
+empty :=
+space := $(empty) $(empty)
+dollar := $
+right_paren := )
+left_paren := (
+
+# $(if-success,<command>,<then>,<else>)
+# Return <then> if <command> exits with 0, <else> otherwise.
+if-success = $(shell,{ $(1); } >/dev/null 2>&1 && echo "$(2)" || echo "$(3)")
+
+# $(success,<command>)
+# Return y if <command> exits with 0, n otherwise
+success = $(if-success,$(1),y,n)
+
+# $(cc-option,<flag>)
+# Return y if the compiler supports <flag>, n otherwise
+cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null)
+
+# $(ld-option,<flag>)
+# Return y if the linker supports <flag>, n otherwise
+ld-option = $(success,$(LD) -v $(1))
--
2.7.4
next prev parent reply other threads:[~2018-05-28 9:25 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-28 9:21 [PATCH v5 00/31] kconfig: move compiler capability tests to Kconfig Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 01/31] kbuild: remove kbuild cache Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 02/31] kbuild: remove CONFIG_CROSS_COMPILE support Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 03/31] kconfig: reference environment variables directly and remove 'option env=' Masahiro Yamada
2018-06-08 17:53 ` [v5, " Andrei Vagin
2018-05-28 9:21 ` [PATCH v5 04/31] kconfig: remove string expansion in file_lookup() Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 05/31] kconfig: remove string expansion for mainmenu after yyparse() Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 06/31] kconfig: remove sym_expand_string_value() Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 07/31] kconfig: make default prompt of mainmenu less specific Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 08/31] kconfig: add built-in function support Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 09/31] kconfig: add 'shell' built-in function Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 10/31] kconfig: replace $(UNAME_RELEASE) with function call Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 11/31] kconfig: begin PARAM state only when seeing a command keyword Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 12/31] kconfig: support user-defined function and recursively expanded variable Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 13/31] kconfig: support simply " Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 14/31] kconfig: support append assignment operator Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 15/31] kconfig: expand lefthand side of assignment statement Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 16/31] kconfig: add 'info', 'warning-if', and 'error-if' built-in functions Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 17/31] kconfig: add 'filename' and 'lineno' built-in variables Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 18/31] kconfig: error out if a recursive variable references itself Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 19/31] Documentation: kconfig: document a new Kconfig macro language Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 20/31] kconfig: test: add Kconfig macro language tests Masahiro Yamada
2018-05-28 9:21 ` [PATCH v5 21/31] kconfig: show compiler version text in the top comment Masahiro Yamada
2018-06-07 8:42 ` Geert Uytterhoeven
2018-06-07 8:58 ` Masahiro Yamada
2018-06-08 7:04 ` Masahiro Yamada
2018-06-08 8:22 ` Geert Uytterhoeven
2018-05-28 9:21 ` Masahiro Yamada [this message]
2018-05-28 9:22 ` [PATCH v5 23/31] stack-protector: test compiler capability in Kconfig and drop AUTO mode Masahiro Yamada
2018-05-28 9:22 ` [PATCH v5 24/31] kconfig: add CC_IS_GCC and GCC_VERSION Masahiro Yamada
2018-06-04 21:49 ` Stefan Agner
2018-06-05 0:07 ` Masahiro Yamada
2018-06-05 5:50 ` Stefan Agner
2018-06-05 6:27 ` Masahiro Yamada
2018-06-05 8:37 ` Stefan Agner
2018-05-28 9:22 ` [PATCH v5 25/31] kconfig: add CC_IS_CLANG and CLANG_VERSION Masahiro Yamada
2018-05-28 9:22 ` [PATCH v5 26/31] gcov: remove CONFIG_GCOV_FORMAT_AUTODETECT Masahiro Yamada
2018-05-28 9:22 ` [PATCH v5 27/31] kcov: test compiler capability in Kconfig and correct dependency Masahiro Yamada
2018-06-10 14:19 ` Masahiro Yamada
2018-05-28 9:22 ` [PATCH v5 28/31] gcc-plugins: move GCC version check for PowerPC to Kconfig Masahiro Yamada
2018-05-28 9:22 ` [PATCH v5 29/31] gcc-plugins: test plugin support in Kconfig and clean up Makefile Masahiro Yamada
2018-05-28 9:22 ` [PATCH v5 30/31] gcc-plugins: allow to enable GCC_PLUGINS for COMPILE_TEST Masahiro Yamada
2018-05-28 9:22 ` [PATCH v5 31/31] Documentation: kconfig: add recommended way to describe compiler support Masahiro Yamada
2018-05-28 12:23 ` [PATCH v5 00/31] kconfig: move compiler capability tests to Kconfig Masahiro Yamada
2018-05-30 0:38 ` Masahiro Yamada
2018-06-01 8:31 ` Arnd Bergmann
2018-06-01 10:29 ` Masahiro Yamada
2018-06-01 11:09 ` Arnd Bergmann
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