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				# $FreeBSD$

				# This makefile is for customizations that should be done early

				.if !defined(_TARGETS)
				# some things we do only once
				_TARGETS:= ${.TARGETS}
				.export _TARGETS
				.endif

				# some handy macros
				_this = ${.PARSEDIR:tA}/${.PARSEFILE}
				# some useful modifiers

				# A useful trick for testing multiple :M's against something
				# :L says to use the variable's name as its value - ie. literal
				# got = ${clean* destroy:${M_ListToMatch:S,V,.TARGETS,}}
				M_ListToMatch = L:@m@$${V:M$$m}@
				# match against our initial targets (see above)
				M_L_TARGETS = ${M_ListToMatch:S,V,_TARGETS,}

				# turn a list into a set of :N modifiers
				# NskipFoo = ${Foo:${M_ListToSkip}}
				M_ListToSkip= O:u:ts::S,:,:N,g:S,^,N,

				# type should be a builtin in any sh since about 1980,
				# AUTOCONF := ${autoconf:L:${M_whence}}
				M_type = @x@(type $$x 2> /dev/null); echo;@:sh:[0]:N* found*:[@]:C,[()],,g
				M_whence = ${M_type}:M/*:[1]

				# convert a path to a valid shell variable
				M_P2V = tu:C,[./-],_,g

				# these are handy
				# we can use this for a cheap timestamp at the start of a target's script,
				# but not at the end - since make will expand both at the same time.
				TIME_STAMP_FMT = @ %s [%Y-%m-%d %T]
				TIME_STAMP = ${TIME_STAMP_FMT:localtime}
				# this will produce the same output but as of when date(1) is run.
				TIME_STAMP_DATE = `date '+${TIME_STAMP_FMT}'`
				TIME_STAMP_END?= ${TIME_STAMP_DATE}

				.include "src.sys.env.mk"