$NetBSD: patch-Makefile,v 1.3 2023/05/26 20:38:47 schmonz Exp $

Libtoolize for portable shared libraries.

--- Makefile.orig	2023-05-20 19:09:00.000000000 +0000
+++ Makefile
@@ -1,5 +1,6 @@
 .PHONY: regress regen_regress
 .SUFFIXES: .xml .md .html .pdf .1 .1.html .3 .3.html .5 .5.html .thumb.jpg .png .in.pc .pc .valgrind .old.md .diff-valgrind
+.SUFFIXES: .lo
 
 include Makefile.configure
 
@@ -125,7 +126,11 @@ REGRESS_ARGS	+= "--parse-no-deflists"
 
 VALGRIND_ARGS	 = -q --leak-check=full --leak-resolution=high --show-reachable=yes
 
-all: bins lowdown.pc liblowdown.so
+LIBTOOL		 = libtool --tag=CC
+LT_OBJS		 = $(OBJS:C/\.o$/.lo/g)
+LT_COMPAT_OBJS	 = $(COMPAT_OBJS:C/\.o$/.lo/g)
+
+all: bins lowdown.pc liblowdown.la
 bins: lowdown lowdown-diff
 
 valgrind: $(VALGRINDS) $(VALGRINDDIFFS)
@@ -173,11 +178,13 @@ installwww: www
 	$(INSTALL) -m 0444 lowdown.tar.gz $(WWWDIR)/snapshots
 	$(INSTALL) -m 0444 lowdown.tar.gz.sha512 $(WWWDIR)/snapshots
 
-lowdown: liblowdown.a main.o
-	$(CC) -o $@ main.o liblowdown.a $(LDFLAGS) $(LDADD_MD5) -lm $(LDADD)
+lowdown: liblowdown.la main.lo
+	$(LIBTOOL) --mode=link $(CC) -o $@ main.lo -llowdown $(LDFLAGS) $(LDADD_MD5) -lm $(LDADD)
 
-lowdown-diff: lowdown
-	ln -f lowdown lowdown-diff
+# For regress, we build this (just like lowdown) so that its libtool wrapper works.
+# At install, we'll still just make a hard link to lowdown like upstream.
+lowdown-diff: liblowdown.la main.lo
+	$(LIBTOOL) --mode=link $(CC) -o $@ main.lo -llowdown $(LDFLAGS) $(LDADD_MD5) -lm $(LDADD)
 
 liblowdown.a: $(OBJS) $(COMPAT_OBJS)
 	$(AR) rs $@ $(OBJS) $(COMPAT_OBJS)
@@ -186,14 +193,17 @@ liblowdown.so: $(OBJS) $(COMPAT_OBJS)
 	$(CC) -shared -o $@.$(LIBVER) $(OBJS) $(COMPAT_OBJS) $(LDFLAGS) $(LDADD_MD5) -lm -Wl,${LINKER_SONAME},$@.$(LIBVER) $(LDLIBS)
 	ln -sf $@.$(LIBVER) $@
 
+liblowdown.la: $(LT_OBJS) $(LT_COMPAT_OBJS)
+	$(LIBTOOL) --mode=link $(CC) -o $@ $(LT_OBJS) $(LT_COMPAT_OBJS) $(LDFLAGS) $(LDADD_MD5) -lm $(LDLIBS) -version-number $(LIBVER) -rpath $(LIBDIR)
+
 install: bins
 	mkdir -p $(DESTDIR)$(BINDIR)
 	mkdir -p $(DESTDIR)$(MANDIR)/man1
 	mkdir -p $(DESTDIR)$(MANDIR)/man5
 	mkdir -p $(DESTDIR)$(SHAREDIR)/lowdown/odt
 	$(INSTALL_DATA) share/odt/styles.xml $(DESTDIR)$(SHAREDIR)/lowdown/odt
-	$(INSTALL_PROGRAM) lowdown $(DESTDIR)$(BINDIR)
-	$(INSTALL_PROGRAM) lowdown-diff $(DESTDIR)$(BINDIR)
+	$(LIBTOOL) --mode=install $(INSTALL_PROGRAM) lowdown $(DESTDIR)$(BINDIR)
+	ln $(DESTDIR)$(BINDIR)/lowdown $(DESTDIR)$(BINDIR)/lowdown-diff
 	for f in $(MAN1S) $(MAN5S) ; do \
 		name=`basename $$f .html` ; \
 		section=$${name##*.} ; \
@@ -212,6 +222,9 @@ install_lib_common: lowdown.pc
 		$(INSTALL_MAN) man/$$name $(DESTDIR)$(MANDIR)/man$$section ; \
 	done
 
+install_pkgsrc: liblowdown.la install_lib_common
+	$(LIBTOOL) --mode=install $(BSD_INSTALL_LIB) liblowdown.la $(DESTDIR)$(LIBDIR)
+
 install_shared: liblowdown.so install_lib_common
 	$(INSTALL_LIB) liblowdown.so.$(LIBVER) $(DESTDIR)$(LIBDIR)
 	( cd $(DESTDIR)$(LIBDIR) && ln -sf liblowdown.so.$(LIBVER) liblowdown.so )
@@ -279,6 +292,9 @@ diff.diff.pdf: diff.md diff.old.md lowdo
 
 $(HTMLS): versions.xml lowdown
 
+.c.lo:
+	$(LIBTOOL) --mode=compile $(CC) $(CFLAGS) -c -o $@ $<
+
 .md.xml: lowdown
 	( echo "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>" ; \
 	  echo "<article data-sblg-article=\"1\">" ; \
@@ -313,13 +329,13 @@ lowdown.tar.gz:
 	( cd .dist/ && tar zcf ../$@ lowdown-$(VERSION) )
 	rm -rf .dist/
 
-$(OBJS) $(COMPAT_OBJS) main.o: config.h
+$(LT_OBJS) $(LT_COMPAT_OBJS) main.lo: config.h
 
-$(OBJS): extern.h lowdown.h
+$(LT_OBJS): extern.h lowdown.h
 
-term.o: term.h
+term.lo: term.h
 
-main.o: lowdown.h
+main.lo: lowdown.h
 
 clean:
 	rm -f $(OBJS) $(COMPAT_OBJS) main.o