# 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))

# gcc version including patch level

gcc-version := $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//')