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PREFIX   ?= /usr/local
CFLAGS   ?= -O2 -g
LDFLAGS  ?=
LIBS     ?=



REPEAT_VERSION := 1.4
DATE           := $(shell date '+%Y-%m-%d')

__CFLAGS   := -std=c99 -Wall \
	      -DREPEAT_VERSION=\"$(REPEAT_VERSION)\" \
	      -D_POSIX_C_SOURCE=200809L
__LDFLAGS  :=
__LIBS     :=

all: rpt rpt.1.gz

rpt: rpt.o
	$(CC) -o $@ $^ $(__LDFLAGS) $(__LIBS) $(LDFLAGS) $(LIBS)

rpt.o: rpt.c
	$(CC) $(__CFLAGS) $(CFLAGS) -o $@ -c $<

rpt.1.gz: rpt.1
	gzip -9 -c $< > $@

rpt.1: rpt.1.in
	sed -e "s:@DATE@:$(DATE):" \
	    -e "s:@REPEAT_VERSION@:$(REPEAT_VERSION):" \
	    < $< \
	    > $@

install: all
	mkdir -p $(PREFIX)/bin
	install --mode=0755 rpt $(PREFIX)/bin/

	mkdir -p $(PREFIX)/share/man/man1
	install --mode=0644 rpt.1.gz $(PREFIX)/share/man/man1/

uninstall:
	rm -rf $(PREFIX)/bin/rpt

clean:
	rm -rf rpt *.tar.gz rpt.o

dist:
	git archive \
	    --output="repeat-$(REPEAT_VERSION).tar.gz" \
	    --prefix="repeat-$(REPEAT_VERSION)/" \
	    HEAD

.PHONY: all clean dist install uninstall