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- # 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 $(CLANG_FLAGS) $(1) -S -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))
- # gcc version including patch level
- gcc-version := $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//')
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