Makefile adjustments to get ready for adding docs

Makefile

@@ -39,13 +39,9 @@ CFLAGS     += -Wall -Werror
 CFLAGS     += -Iinclude
 CFLAGS     += -fPIC
 
-includedir  = $(DESTDIR)$(PREFIX)/include
-libdir      = $(DESTDIR)$(PREFIX)/lib
-
 hdrs       += include/bytes.h
 hdrs       += include/haggis.h
 hdrs       += include/jobq.h
-hdrs       += include/linklist.h
 
 srcs       += bytes.c
 srcs       += haggis.c
@@ -60,19 +56,28 @@ shared: libhaggis.so
 
 static: libhaggis.a
 
+$(srcs): $(hdrs)
+
 libhaggis.a: $(objs)
 	$(AR) rcs $@ $?
 
 libhaggis.so: $(objs)
 	$(CC) -shared -o $@ $? $(LIBS)
 
-install: libhaggis.a libhaggis.so include/haggis.h
-	[ -d $(includedir) ] || install -d $(includedir)
-	[ -d $(libdir) ] || install -d $(libdir)
-	install -m755 libhaggis.so $(libdir)/
-	install -m644 libhaggis.a $(libdir)/
+install: install_include install_shared install_static
+
+install_include: include/haggis.h
+	@[ -d $(includedir) ] || install -d $(includedir)
 	install -m644 include/haggis.h $(includedir)/
 
+install_static: libhaggis.a
+	@[ -d $(libdir) ] || install -d $(libdir)
+	install -m644 libhaggis.a $(libdir)/
+
+install_shared: libhaggis.so
+	@[ -d $(libdir) ] || install -d $(libdir)
+	install -m755 libhaggis.so $(libdir)/
+
 test: libhaggis.a
 	$(MAKE) -C test
 
@@ -83,4 +88,5 @@ clean:
 	rm -rf *.a *.so *.o
 	$(MAKE) -C test clean
 
-.PHONY: all shared static clean install testclean test
+.PHONY: all shared static clean install install_include install_static \
+    install_shared testclean test

config.mk

@@ -1,4 +1,10 @@
 prefix ?= /usr/local
+bindir      = $(DESTDIR)$(PREFIX)/bin
+includedir  = $(DESTDIR)$(PREFIX)/include
+libdir      = $(DESTDIR)$(PREFIX)/lib
+sharedir    = $(DESTDIR)$(PREFIX)/share
+mandir      = $(sharedir)/man
+docdir      = $(sharedir)/doc/haggis
 # Comment this line if your OS ships libmd as part of libc
 # (NetBSD, OpenBSD)
 LIBS   += -lmd