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.DEFAULT_GOAL = install

binaries = penme unpenme repenme
dependencies = arp-scan

prefix = /usr
bindir = $(prefix)/bin

sudo = $(shell [ "$$(id -u)" = 0 ] || echo ' sudo')
age = $(shell echo $$(( $$(date +%s -d now) - $$(stat -c %Y $@) )) )

.PHONY: install-depends-stamp install penetrated
install-depends-stamp:
	[ ! -e $@ ]  ||  [ $(age) -lt 86400 ] || rm -f $@
	[   -e $@ ]  || $(sudo) apt install --no-upgrade $(dependencies)
	[   -e $@ ]  ||  touch $@

install: install-depends-stamp $(binaries)
	$(sudo) install $(binaries) -t $(DESTDIR)$(bindir)
	$(sudo) ln -sf penyou $(DESTDIR)$(bindir)/
	$(sudo) ln -sfT penyou $(DESTDIR)$(bindir)/sash

penetrated: install
	penme