Commit e1cfdc0e authored by Masahiro Yamada's avatar Masahiro Yamada

kconfig: add basic helper macros to scripts/Kconfig.include

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: 's avatarMasahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: 's avatarKees Cook <keescook@chromium.org>
Reviewed-by: 's avatarUlf Magnusson <ulfalizer@gmail.com>
parent 21c54b77
......@@ -7,4 +7,6 @@ mainmenu "Linux/$(ARCH) $(KERNELVERSION) Kernel Configuration"
comment "Compiler: $(CC_VERSION_TEXT)"
source "scripts/Kconfig.include"
source "arch/$(SRCARCH)/Kconfig"
......@@ -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>
......
......@@ -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"
......
# 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))
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