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Step 5: re-write Makefile and relax.  This restructures the Makefile to
do actual dependency checking for headers and to build everything nicer
(www properly depends on mandoc, etc.).

Note that the ChangeLog isn't being built any more: if people are
interested, they can visit the source-changes mailing list archive.

.PHONY: 	 clean install installwww
.SUFFIXES:	 .sgml .html .md5 .h .h.html
.SUFFIXES:	 .1       .3       .7
.SUFFIXES:	 .1.txt   .3.txt   .7.txt
.SUFFIXES:	 .1.pdf   .3.pdf   .7.pdf
.SUFFIXES:	 .1.ps    .3.ps    .7.ps
.SUFFIXES:	 .1.html  .3.html  .7.html 
.SUFFIXES:	 .1.xhtml .3.xhtml .7.xhtml 

# Specify this if you want to hard-code the operating system to appear
# in the lower-left hand corner of -mdoc manuals.
# CFLAGS	+= -DOSNAME="\"OpenBSD 4.5\""

VERSION		 = 1.10.10
VDATE		 = 20 March 2011
CFLAGS		+= -g -DHAVE_CONFIG_H -DVERSION="\"$(VERSION)\""
CFLAGS     	+= -W -Wall -Wstrict-prototypes -Wno-unused-parameter -Wwrite-strings
PREFIX		 = /usr/local
BINDIR		 = $(PREFIX)/bin
INCLUDEDIR	 = $(PREFIX)/include
LIBDIR		 = $(PREFIX)/lib
MANDIR		 = $(PREFIX)/man
EXAMPLEDIR	 = $(PREFIX)/share/examples/mandoc
INSTALL		 = install
INSTALL_PROGRAM	 = $(INSTALL) -m 0755
INSTALL_DATA	 = $(INSTALL) -m 0444
INSTALL_LIB	 = $(INSTALL) -m 0644
INSTALL_MAN	 = $(INSTALL_DATA)

all: mandoc

SRCS		 = Makefile \
		   arch.c \
		   arch.in \
		   att.c \
		   att.in \
		   chars.c \
		   chars.in \
		   compat.c \
		   config.h.post \
		   config.h.pre \
		   eqn.7 \
		   eqn.c \
		   example.style.css \
		   external.png \
		   html.c \
		   html.h \
		   index.css \
		   index.sgml \
		   lib.c \
		   lib.in \
		   libman.h \
		   libmandoc.h \
		   libmdoc.h \
		   libroff.h \
		   main.c \
		   main.h \
		   man.7 \
		   man.c \
		   man_argv.c \
		   man_hash.c \
		   man_html.c \
		   man_macro.c \
		   man_term.c \
		   man_validate.c \
		   mandoc.1 \
		   mandoc.3 \
		   mandoc.c \
		   mandoc.h \
		   mandoc_char.7 \
		   mdoc.7 \
		   mdoc.c \
		   mdoc_argv.c \
		   mdoc_hash.c \
		   mdoc_html.c \
		   mdoc_macro.c \
		   mdoc_term.c \
		   mdoc_validate.c \
		   msec.c \
		   msec.in \
		   out.c \
		   out.h \
		   read.c \
		   roff.7 \
		   roff.c \
		   st.c \
		   st.in \
		   style.css \
		   tbl.7 \
		   tbl.c \
		   tbl_data.c \
		   tbl_html.c \
		   tbl_layout.c \
		   tbl_opts.c \
		   tbl_term.c \
		   term.c \
		   term.h \
		   term_ascii.c \
		   term_ps.c \
		   test-strlcat.c \
		   test-strlcpy.c \
		   tree.c \
		   vol.c \
		   vol.in

LIBMAN_OBJS	 = man.o \
		   man_argv.o \
		   man_hash.o \
		   man_macro.o \
		   man_validate.o
LIBMDOC_OBJS	 = arch.o \
		   att.o \
		   lib.o \
		   mdoc.o \
		   mdoc_argv.o \
		   mdoc_hash.o \
		   mdoc_macro.o \
		   mdoc_validate.o \
		   msec.o \
		   st.o \
		   vol.o
LIBROFF_OBJS	 = eqn.o \
		   roff.o \
		   tbl.o \
		   tbl_data.o \
		   tbl_layout.o \
		   tbl_opts.o
LIBMANDOC_OBJS	 = $(LIBMAN_OBJS) \
		   $(LIBMDOC_OBJS) \
		   $(LIBROFF_OBJS) \
		   mandoc.o \
		   read.o

arch.o: arch.in
att.o: att.in
lib.o: lib.in
msec.o: msec.in
st.o: st.in
vol.o: vol.in

$(LIBMAN_OBJS): libmdoc.h
$(LIBMDOC_OBJS): libmdoc.h
$(LIBROFF_OBJS): libroff.h
$(LIBMANDOC_OBJS): mandoc.h libmandoc.h config.h

MANDOC_HTML_OBJS = html.o \
		   man_html.o \
		   mdoc_html.o \
		   tbl_html.o
MANDOC_TERM_OBJS = man_term.o \
		   mdoc_term.o \
		   term.o \
		   term_ascii.o \
		   term_ps.o \
		   tbl_term.o
MANDOC_OBJS	 = $(MANDOC_HTML_OBJS) \
		   $(MANDOC_TERM_OBJS) \
		   chars.o \
		   main.o \
		   out.o \
		   tree.o

chars.o: chars.in

$(MANDOC_HTML_OBJS): html.h
$(MANDOC_TERM_OBJS): term.h
$(MANDOC_OBJS): main.h mandoc.h config.h out.h

compat.o: config.h

INDEX_MANS	 = mandoc.1.html \
		   mandoc.1.xhtml \
		   mandoc.1.ps \
		   mandoc.1.pdf \
		   mandoc.1.txt \
		   mandoc.3.html \
		   mandoc.3.xhtml \
		   mandoc.3.ps \
		   mandoc.3.pdf \
		   mandoc.3.txt \
		   eqn.7.html \
		   eqn.7.xhtml \
		   eqn.7.ps \
		   eqn.7.pdf \
		   eqn.7.txt \
		   man.7.html \
		   man.7.xhtml \
		   man.7.ps \
		   man.7.pdf \
		   man.7.txt \
		   mandoc_char.7.html \
		   mandoc_char.7.xhtml \
		   mandoc_char.7.ps \
		   mandoc_char.7.pdf \
		   mandoc_char.7.txt \
		   mdoc.7.html \
		   mdoc.7.xhtml \
		   mdoc.7.ps \
		   mdoc.7.pdf \
		   mdoc.7.txt \
		   roff.7.html \
		   roff.7.xhtml \
		   roff.7.ps \
		   roff.7.pdf \
		   roff.7.txt \
		   tbl.7.html \
		   tbl.7.xhtml \
		   tbl.7.ps \
		   tbl.7.pdf \
		   tbl.7.txt

$(INDEX_MANS): mandoc

INDEX_OBJS	 = $(INDEX_MANS) \
		   man.h.html \
		   mandoc.h.html \
		   mdoc.h.html \
		   mdocml.tar.gz \
		   mdocml.md5

www: index.html

clean:
	rm -f libmandoc.a $(LIBMANDOC_OBJS)
	rm -f mandoc $(MANDOC_OBJS)
	rm -f config.h compat.o config.log
	rm -f mdocml.tar.gz
	rm -f index.html $(INDEX_OBJS)

install: all
	mkdir -p $(DESTDIR)$(BINDIR)
	mkdir -p $(DESTDIR)$(EXAMPLEDIR)
	mkdir -p $(DESTDIR)$(MANDIR)/man1
	mkdir -p $(DESTDIR)$(MANDIR)/man3
	mkdir -p $(DESTDIR)$(MANDIR)/man7
	$(INSTALL_PROGRAM) mandoc $(DESTDIR)$(BINDIR)
	$(INSTALL_LIB) libmandoc.a $(DESTDIR)$(LIBDIR)/
	$(INSTALL_MAN) mandoc.1 $(DESTDIR)$(MANDIR)/man1
	$(INSTALL_MAN) mandoc.3 $(DESTDIR)$(MANDIR)/man3
	$(INSTALL_MAN) man.7 mdoc.7 roff.7 eqn.7 tbl.7 mandoc_char.7 $(DESTDIR)$(MANDIR)/man7
	$(INSTALL_DATA) example.style.css $(DESTDIR)$(EXAMPLEDIR)

installwww: www
	mkdir -p $(PREFIX)/snapshots
	$(INSTALL_DATA) $(INDEX_MANS) $(PREFIX)
	$(INSTALL_DATA) mandoc.h.html man.h.html mdoc.h.html $(PREFIX)
	$(INSTALL_DATA) external.png style.css index.css $(PREFIX)
	$(INSTALL_DATA) mdocml.tar.gz $(PREFIX)/snapshots
	$(INSTALL_DATA) mdocml.md5 $(PREFIX)/snapshots
	$(INSTALL_DATA) mdocml.tar.gz $(PREFIX)/snapshots/mdocml-$(VERSION).tar.gz
	$(INSTALL_DATA) mdocml.md5 $(PREFIX)/snapshots/mdocml-$(VERSION).md5

libmandoc.a: compat.o $(LIBMANDOC_OBJS)
	$(AR) rs $@ compat.o $(LIBMANDOC_OBJS)

mandoc: $(MANDOC_OBJS) libmandoc.a
	$(CC) -o $@ $(MANDOC_OBJS) libmandoc.a

mdocml.md5: mdocml.tar.gz
	md5 mdocml.tar.gz >$@

mdocml.tar.gz: $(SRCS)
	mkdir -p .dist/mdocml-$(VERSION)/
	$(INSTALL) -m 0444 $(SRCS) .dist/mdocml-$(VERSION)
	( cd .dist/ && tar zcf ../$@ ./ )
	rm -rf .dist/

index.html: $(INDEX_OBJS)

config.h: config.h.pre config.h.post
	rm -f config.log
	( cat config.h.pre; \
	  echo; \
	  if $(CC) $(CFLAGS) -Werror -o test-strlcat test-strlcat.c >> config.log 2>&1; then \
		echo '#define HAVE_STRLCAT'; \
		rm test-strlcat; \
	  fi; \
	  if $(CC) $(CFLAGS) -Werror -o test-strlcpy test-strlcpy.c >> config.log 2>&1; then \
		echo '#define HAVE_STRLCPY'; \
		rm test-strlcpy; \
	  fi; \
	  echo; \
	  cat config.h.post \
	) > $@

.h.h.html:
	highlight -I $< >$@

.1.1.txt .3.3.txt .7.7.txt:
	./mandoc -Tascii -Wall,stop $< | col -b >$@

.1.1.html .3.3.html .7.7.html:
	./mandoc -Thtml -Wall,stop -Ostyle=style.css,man=%N.%S.html,includes=%I.html $< >$@

.1.1.ps .3.3.ps .7.7.ps:
	./mandoc -Tps -Wall,stop $< >$@

.1.1.xhtml .3.3.xhtml .7.7.xhtml:
	./mandoc -Txhtml -Wall,stop -Ostyle=style.css,man=%N.%S.xhtml,includes=%I.html $< >$@

.1.1.pdf .3.3.pdf .7.7.pdf:
	./mandoc -Tpdf -Wall,stop $< >$@

.sgml.html:
	validate --warn $<
	sed -e "s!@VERSION@!$(VERSION)!" -e "s!@VDATE@!$(VDATE)!" $< >$@