$NetBSD$

Use libtool to link and install binaries.

--- src/Makefile.orig	2019-04-07 09:24:20.000000000 +0000
+++ src/Makefile
@@ -352,6 +352,10 @@ $(LIBNAME): $(OBJECTS)
 	$(LIBCOMMAND) $@ $(OBJECTS)
 	$(RANLIB) $@
 
+libfltk.la: $(OBJECTS)
+	echo $(CXX) $@ ...
+	${LIBTOOL} --mode=link $(CXX) $(ARCHFLAGS) $(LDFLAGS) -o $@ $(OBJECTS:.o=.lo) -rpath $(prefix)/lib -version-info 1:9 $(LDLIBS)
+
 libfltk.so.$(FL_DSO_VERSION): $(OBJECTS)
 	echo $(DSOCOMMAND) $@ ...
 	$(DSOCOMMAND) $@ $(OBJECTS) $(LDLIBS)
@@ -388,6 +392,10 @@ $(FLLIBNAME): $(FLOBJECTS)
 	$(LIBCOMMAND) $@ $(FLOBJECTS)
 	$(RANLIB) $@
 
+libfltk_forms.la: $(FLOBJECTS)
+	echo $(CXX) $@ ...
+	${LIBTOOL} --mode=link $(CXX) $(ARCHFLAGS) $(LDFLAGS) -o $@ $(FLOBJECTS:.o=.lo) -rpath $(prefix)/lib -version-info 1:9 $(LDLIBS)
+
 libfltk_forms.so.$(FL_DSO_VERSION): $(FLOBJECTS) libfltk.so.$(FL_DSO_VERSION)
 	echo $(DSOCOMMAND) $@ ...
 	$(DSOCOMMAND) $@ $(FLOBJECTS) -L. -lfltk $(LDLIBS)
@@ -424,6 +432,10 @@ $(GLLIBNAME): $(GLOBJECTS)
 	$(LIBCOMMAND) $@ $(GLOBJECTS)
 	$(RANLIB) $@
 
+libfltk_gl.la: $(GLOBJECTS)
+	echo $(CXX) $@ ...
+	${LIBTOOL} --mode=link $(CXX) $(ARCHFLAGS) $(LDFLAGS) -o $@ $(GLOBJECTS:.o=.lo) -rpath $(prefix)/lib -version-info 1:9 $(LDLIBS)
+
 libfltk_gl.so.$(FL_DSO_VERSION): $(GLOBJECTS) libfltk.so.$(FL_DSO_VERSION)
 	echo $(DSOCOMMAND) $@ ...
 	$(DSOCOMMAND) $@ $(GLOBJECTS) -L. -lfltk $(LDLIBS) $(GLDLIBS)
@@ -460,6 +472,10 @@ $(IMGLIBNAME): $(IMGOBJECTS)
 	$(LIBCOMMAND) $@ $(IMGOBJECTS)
 	$(RANLIB) $@
 
+libfltk_images.la: $(IMGOBJECTS)
+	echo $(CXX) $@ ...
+	${LIBTOOL} --mode=link $(CXX) $(ARCHFLAGS) $(LDFLAGS) -o $@ $(IMGOBJECTS:.o=.lo) -rpath $(prefix)/lib -version-info 1:9 $(LDLIBS)
+
 libfltk_images.so.$(FL_DSO_VERSION): $(IMGOBJECTS) libfltk.so.$(FL_DSO_VERSION)
 	echo $(DSOCOMMAND) $@ ...
 	$(DSOCOMMAND) $@ $(IMGOBJECTS) -L. $(IMAGELIBS) -lfltk $(LDLIBS)
@@ -759,6 +775,9 @@ install: $(LIBNAME) $(DSONAME) \
 		$(INSTALL_LIB) $(GLLIBNAME) $(DESTDIR)$(libdir); \
 		$(RANLIB) $(DESTDIR)$(libdir)/$(GLLIBBASENAME); \
 	fi
+	if test x$(DSONAME) = xlibfltk.la; then\
+		${LIBTOOL} --mode=install $(INSTALL_LIB) libfltk.la $(DESTDIR)$(libdir); \
+	fi
 	$(RANLIB) $(DESTDIR)$(libdir)/$(IMGLIBBASENAME)
 	if test x$(DSONAME) = xlibfltk.so.$(FL_DSO_VERSION); then\
 		$(RM) $(DESTDIR)$(libdir)/libfltk.so*;\
@@ -779,6 +798,9 @@ install: $(LIBNAME) $(DSONAME) \
 		$(RM) $(DESTDIR)$(libdir)/libfltk_s.a;\
 		$(INSTALL_LIB) libfltk_s.a $(DESTDIR)$(libdir); \
 	fi
+	if test x$(FLDSONAME) = xlibfltk_forms.la; then\
+		${LIBTOOL} --mode=install $(INSTALL_LIB) libfltk_forms.la $(DESTDIR)$(libdir); \
+	fi
 	if test x$(DSONAME) = xcygfltknox-$(FL_DSO_VERSION).dll; then\
 		$(RM) $(DESTDIR)$(bindir)/$(DSONAME);\
 		$(INSTALL_LIB) $(DSONAME) $(DESTDIR)$(bindir); \
@@ -796,6 +818,9 @@ install: $(LIBNAME) $(DSONAME) \
 		$(INSTALL_LIB) libfltk_forms.so.$(FL_DSO_VERSION) $(DESTDIR)$(libdir); \
 		$(LN) libfltk_forms.so.$(FL_DSO_VERSION) $(DESTDIR)$(libdir)/libfltk_forms.so;\
 	fi
+	if test x$(GLDSONAME) = xlibfltk_gl.la; then\
+		${LIBTOOL} --mode=install $(INSTALL_LIB) libfltk_gl.la $(DESTDIR)$(libdir); \
+	fi
 	if test x$(FLDSONAME) = xlibfltk_forms.sl.$(FL_DSO_VERSION); then\
 		$(RM) $(DESTDIR)$(libdir)/libfltk_forms.sl*;\
 		$(INSTALL_LIB) libfltk_forms.sl.$(FL_DSO_VERSION) $(DESTDIR)$(libdir); \
@@ -853,6 +878,9 @@ install: $(LIBNAME) $(DSONAME) \
 		$(RM) $(DESTDIR)$(libdir)/libfltk_gl.dll.a;\
 		$(INSTALL_LIB) libfltk_gl.dll.a $(DESTDIR)$(libdir); \
 	fi
+	if test x$(IMGDSONAME) = xlibfltk_images.la; then\
+		${LIBTOOL} --mode=install $(INSTALL_LIB) libfltk_images.la $(DESTDIR)$(libdir); \
+	fi
 	if test x$(IMGDSONAME) = xlibfltk_images.so.$(FL_DSO_VERSION); then\
 		$(RM) $(DESTDIR)$(libdir)/libfltk_images.so*;\
 		$(INSTALL_LIB) libfltk_images.so.$(FL_DSO_VERSION) $(DESTDIR)$(libdir); \