On Thu, 23 Jan 2020 at 11:22, Amit Daniel Kachhap <amit.kachhap@xxxxxxx> wrote: > > From: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> > > Currently kconfig does not have a feature that allows to detect if the > used assembler supports a specific compilation option. > > Introduce 'as-option' to serve this purpose in the context of Kconfig: > > config X > def_bool $(as-option,...) > > Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> > Cc: linux-kbuild@xxxxxxxxxxxxxxx > Acked-by: Masahiro Yamada <masahiroy@xxxxxxxxxx> > Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> > Signed-off-by: Amit Daniel Kachhap <amit.kachhap@xxxxxxx> > --- > Changes since v3: > *) Changed the assembler option to -c instead of earlier -E. > *) Added Masahiro Acked-by. > > scripts/Kconfig.include | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include > index d4adfbe..c4b4424 100644 > --- a/scripts/Kconfig.include > +++ b/scripts/Kconfig.include > @@ -31,6 +31,10 @@ cc-option = $(success,$(CC) -Werror $(CLANG_FLAGS) $(1) -E -x c /dev/null -o /de > # Return y if the linker supports <flag>, n otherwise > ld-option = $(success,$(LD) -v $(1)) > > +# $(as-option,<flag>) > +# Return y if the assembler supports <flag>, n otherwise > +as-option = $(success, $(CC) $(CLANG_FLAGS) $(1) -c -x assembler /dev/null -o /dev/zero) Did you mean '-o /dev/null' here? > + > # check if $(CC) and $(LD) exist > $(error-if,$(failure,command -v $(CC)),compiler '$(CC)' not found) > $(error-if,$(failure,command -v $(LD)),linker '$(LD)' not found) > -- > 2.7.4 >
