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>
---
scripts/Kconfig.include | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
index 85334dc..374e251 100644
--- a/scripts/Kconfig.include
+++ b/scripts/Kconfig.include
@@ -35,6 +35,10 @@ ld-option = $(success,$(LD) -v $(1))
# Return y if the assembler supports <instr>, n otherwise
as-instr = $(success,printf "%b\n" "$(1)" | $(CC) $(CLANG_FLAGS) -c -x assembler -o /dev/null -)
+# $(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
