include config.mk

.POSIX:
.SUFFIXES: .c .o

HDR = \
	arg.h    \
	crypt.h  \
	fs.h     \
	md5.h    \
	sha1.h   \
	sha256.h \
	sha512.h \
	text.h   \
	util.h

LIB = \
	util/agetcwd.o   \
	util/agetline.o  \
	util/apathmax.o  \
	util/concat.o    \
	util/cp.o        \
	util/crypt.o     \
	util/ealloc.o    \
	util/enmasse.o   \
	util/eprintf.o   \
	util/estrtod.o   \
	util/estrtol.o   \
	util/fnck.o      \
	util/getlines.o  \
	util/human.o     \
	util/md5.o       \
	util/mode.o      \
	util/putword.o   \
	util/recurse.o   \
	util/rm.o        \
	util/sha1.o      \
	util/sha256.o    \
	util/sha512.o    \
	util/strlcat.o   \
	util/strlcpy.o

SRC = \
	basename.c \
	cal.c      \
	cat.c      \
	chgrp.c    \
	chmod.c    \
	chown.c    \
	chroot.c   \
	cksum.c    \
	cmp.c      \
	col.c      \
	cols.c     \
	comm.c     \
	cp.c       \
	csplit.c   \
	cut.c      \
	date.c     \
	dirname.c  \
	du.c       \
	echo.c     \
	env.c      \
	expand.c   \
	expr.c     \
	false.c    \
	fold.c     \
	grep.c     \
	head.c     \
	hostname.c \
	kill.c     \
	link.c     \
	ln.c       \
	logname.c  \
	ls.c       \
	md5sum.c   \
	mkdir.c    \
	mkfifo.c   \
	mktemp.c   \
	mv.c       \
	nice.c     \
	nl.c       \
	nohup.c    \
	paste.c    \
	printenv.c \
	printf.c   \
	pwd.c      \
	readlink.c \
	renice.c   \
	rm.c       \
	rmdir.c    \
	sleep.c    \
	setsid.c   \
	sort.c     \
	split.c    \
	sponge.c   \
	strings.c  \
	sync.c     \
	tail.c     \
	tar.c      \
	tee.c      \
	test.c     \
	touch.c    \
	tr.c       \
	true.c     \
	tty.c      \
	uudecode.c \
	uuencode.c \
	uname.c    \
	unexpand.c \
	uniq.c     \
	unlink.c   \
	seq.c      \
	sha1sum.c  \
	sha256sum.c\
	sha512sum.c\
	wc.c       \
	xargs.c    \
	yes.c

OBJ = $(SRC:.c=.o) $(LIB)
BIN = $(SRC:.c=)
MAN = $(SRC:.c=.1)

all: binlib

binlib: util.a
	$(MAKE) bin

bin: $(BIN)

$(OBJ): $(HDR) config.mk

.o:
	@echo LD $@
	@$(LD) -o $@ $< util.a $(LDFLAGS)

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

util.a: $(LIB)
	@echo AR $@
	@$(AR) -r -c $@ $?
	@ranlib $@

install: all
	@echo installing executables to $(DESTDIR)$(PREFIX)/bin
	@mkdir -p $(DESTDIR)$(PREFIX)/bin
	@cp -f $(BIN) $(DESTDIR)$(PREFIX)/bin
	@cd $(DESTDIR)$(PREFIX)/bin && chmod 755 $(BIN)
	@echo installing manual pages to $(DESTDIR)$(MANPREFIX)/man1
	@mkdir -p $(DESTDIR)$(MANPREFIX)/man1
	@for m in $(MAN); do sed "s/VERSION/$(VERSION)/g" < "$$m" > $(DESTDIR)$(MANPREFIX)/man1/"$$m"; done
	@cd $(DESTDIR)$(MANPREFIX)/man1 && chmod 644 $(MAN)

uninstall:
	@echo removing executables from $(DESTDIR)$(PREFIX)/bin
	@cd $(DESTDIR)$(PREFIX)/bin && rm -f $(BIN)
	@echo removing manual pages from $(DESTDIR)$(MANPREFIX)/man1
	@cd $(DESTDIR)$(MANPREFIX)/man1 && rm -f $(MAN)

dist: clean
	@echo creating dist tarball
	@mkdir -p sbase-$(VERSION)
	@cp -r LICENSE Makefile README TODO config.mk $(SRC) $(MAN) util $(HDR) sbase-$(VERSION)
	@tar -cf sbase-$(VERSION).tar sbase-$(VERSION)
	@gzip sbase-$(VERSION).tar
	@rm -rf sbase-$(VERSION)

sbase-box: $(SRC) util.a
	@echo creating box binary
	@mkdir -p build
	@cp $(HDR) build
	@for f in $(SRC); do sed "s/^main(/`basename $$f .c`_&/" < $$f > build/$$f; done
	@echo '#include <libgen.h>'  > build/$@.c
	@echo '#include <stdio.h>'  >> build/$@.c
	@echo '#include <stdlib.h>' >> build/$@.c
	@echo '#include <string.h>' >> build/$@.c
	@echo '#include "util.h"'   >> build/$@.c
	@for f in $(SRC); do echo "int `basename $$f .c`_main(int, char **);" >> build/$@.c; done
	@echo 'int main(int argc, char *argv[]) { char *s = basename(argv[0]); if(!strcmp(s,"sbase-box")) { argc--; argv++; s = basename(argv[0]); } if(0) ;' >> build/$@.c
	@for f in $(SRC); do echo "else if(!strcmp(s, \"`basename $$f .c`\")) return `basename $$f .c`_main(argc, argv);" >> build/$@.c; done
	@echo 'else {' >> build/$@.c
	@for f in $(SRC); do echo "printf(\"`basename $$f .c`\"); putchar(' ');" >> build/$@.c; done
	@echo "putchar(0xa); }; return 0; }" >> build/$@.c
	@echo LD $@
	@$(LD) -o $@ build/*.c util.a $(CFLAGS) $(LDFLAGS)
	@rm -r build

clean:
	@echo cleaning
	@rm -f $(BIN) $(OBJ) $(LIB) util.a sbase-box sbase-$(VERSION).tar.gz