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PREFIX ?= /usr/local
BINDIR = $(DESTDIR)$(PREFIX)/bin
MANDIR = $(DESTDIR)$(PREFIX)/share/man/man1
DOCDIR = $(DESTDIR)$(PREFIX)/share/doc/bcal
STRIP ?= strip

CFLAGS_OPTIMIZATION ?= -O3
CFLAGS_WARNINGS     ?= -Wall -Wextra -Wno-unused-parameter -Werror

LDLIBS_READLINE ?= -lreadline
LDLIBS_EDITLINE ?= -ledit

CFLAGS += $(CFLAGS_OPTIMIZATION) $(CFLAGS_WARNINGS)

O_EL := 0  # set to use the BSD editline library

ifeq ($(strip $(O_EL)),1)
	LDLIBS += $(LDLIBS_EDITLINE)
else
	LDLIBS += $(LDLIBS_READLINE)
endif

SRC = $(wildcard src/*.c)
INCLUDE = -Iinc

bcal: $(SRC)
	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $(INCLUDE) -o bcal $(SRC) $(LDLIBS)

all: bcal

x86: $(SRC)
	$(CC) -m64 $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $(INCLUDE) -o bcal $(SRC) $(LDLIBS)
	strip bcal

distclean: clean
	rm -f *~

install: bcal
	install -m 0755 -d $(BINDIR)
	install -m 0755 -d $(MANDIR)
	install -m 0755 -d $(DOCDIR)
	install -m 0755 bcal $(BINDIR)
	gzip -c bcal.1 > bcal.1.gz
	install -m 0644 bcal.1.gz $(MANDIR)
	install -m 0644 README.md $(DOCDIR)
	rm -f bcal.1.gz

uninstall:
	rm -f $(BINDIR)/bcal
	rm -f $(MANDIR)/bcal.1.gz
	rm -rf $(DOCDIR)

strip: bcal
	$(STRIP) $^

clean:
	-rm -f bcal

skip: ;

.PHONY: bcal all x86 distclean install uninstall strip clean