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Commit e1cfdc0e authored by Masahiro Yamada's avatar Masahiro Yamada
Browse files

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: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatarUlf Magnusson <ulfalizer@gmail.com>
parent 21c54b77

Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -7,4 +7,6 @@ mainmenu "Linux/$(ARCH) $(KERNELVERSION) Kernel Configuration" 


comment "Compiler: $(CC_VERSION_TEXT)"



source "scripts/Kconfig.include"



source "arch/$(SRCARCH)/Kconfig"

MAINTAINERS

+1 −0
Original line number Diff line number Diff line
@@ -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>

arch/x86/um/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -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"

scripts/Kconfig.include

0 → 100644
+27 −0
Original line number Diff line number Diff line 
# 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))