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) + # 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
