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@@ -0,0 +1,30 @@
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+# Kconfig helper macros
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+
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+# Convenient variables
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+comma := ,
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+quote := "
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+squote := '
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+empty :=
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+space := $(empty) $(empty)
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+dollar := $
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+right_paren := )
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+left_paren := (
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+
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+# $(if-success,<command>,<then>,<else>)
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+# Return <then> if <command> exits with 0, <else> otherwise.
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+if-success = $(shell,{ $(1); } >/dev/null 2>&1 && echo "$(2)" || echo "$(3)")
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+
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+# $(success,<command>)
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+# Return y if <command> exits with 0, n otherwise
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+success = $(if-success,$(1),y,n)
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+
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+# $(cc-option,<flag>)
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+# Return y if the compiler supports <flag>, n otherwise
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+cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null)
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+
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+# $(ld-option,<flag>)
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+# Return y if the linker supports <flag>, n otherwise
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+ld-option = $(success,$(LD) -v $(1))
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+
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+# gcc version including patch level
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+gcc-version := $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//')
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