Makefile: various improvements, including POSIX compatibility

Makefile

@@ -1,63 +1,85 @@
-prefix=/usr/local
-libdir=$(prefix)/lib
-includedir=$(prefix)/include
-
-CC=gcc
-AR=ar
-RANLIB=ranlib
-INSTALL=./install.sh
+.POSIX:
+
+PREFIX=/usr/local
+INCLUDEDIR=$(PREFIX)/include
+LIBDIR=$(PREFIX)/lib
+PKGCONFIGDIR=$(LIBDIR)/pkgconfig
+
+PICFLAGS=-fPIC
 WFLAGS=-Wall
-CFLAGS?=-O2
 INCLUDES=-Iinclude
 
 SHAREDLIB=libnl-tiny.so
 STATICLIB=libnl-tiny.a
 PCFILE=libnl-tiny.pc
 ALL_LIBS=$(SHAREDLIB) $(STATICLIB)
-ALL_INCLUDES=$(sort $(wildcard include/*.h include/*/*.h include/*/*/*.h))
+ALL_INCLUDES=\
+	include/netlink-generic.h \
+	include/netlink-local.h \
+	include/netlink-types.h \
+	include/netlink/addr.h \
+	include/netlink/attr.h \
+	include/netlink/cache-api.h \
+	include/netlink/cache.h \
+	include/netlink/data.h \
+	include/netlink/errno.h \
+	include/netlink/genl/ctrl.h \
+	include/netlink/genl/family.h \
+	include/netlink/genl/genl.h \
+	include/netlink/genl/mngt.h \
+	include/netlink/handlers.h \
+	include/netlink/list.h \
+	include/netlink/msg.h \
+	include/netlink/netlink-compat.h \
+	include/netlink/netlink-kernel.h \
+	include/netlink/netlink.h \
+	include/netlink/object-api.h \
+	include/netlink/object.h \
+	include/netlink/socket.h \
+	include/netlink/types.h \
+	include/netlink/utils.h \
+	include/netlink/version.h \
+	include/unl.h
 
 LIBNL_SRCS=nl.c handlers.c msg.c attr.c cache.c cache_mngt.c object.c socket.c error.c
 GENL_SRCS=genl.c genl_family.c genl_ctrl.c genl_mngt.c unl.c
 SRCS=$(LIBNL_SRCS) $(GENL_SRCS)
 OBJS=$(SRCS:.c=.o)
 
-PICFLAGS=-fPIC
-
 -include config.mak
 
-all: $(ALL_LIBS) $(PCFILE)
+ALL_CFLAGS=$(CFLAGS) $(PICFLAGS) $(WFLAGS) $(INCLUDES)
 
-install: $(ALL_LIBS:%=$(DESTDIR)$(libdir)/%) \
-         $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/libnl-tiny/%) \
-         $(PCFILE:%=$(DESTDIR)$(libdir)/pkgconfig/%)
+all: $(ALL_LIBS) $(PCFILE)
 
 clean:
 	rm -f $(OBJS) $(ALL_LIBS) $(PCFILE)
 
-%.o: %.c
-	$(CC) $(CPPFLAGS) -c -o $@ $(INCLUDES) $(CFLAGS) $(PICFLAGS) $<
+.c.o:
+	$(CC) $(CPPFLAGS) -c -o $@ $(ALL_CFLAGS) $<
 
 
 $(SHAREDLIB): $(OBJS)
-	$(CC) -shared -o $@ $^ $(LDFLAGS)
+	$(CC) -shared -o $@ $(LDFLAGS) $(OBJS)
 
 $(STATICLIB): $(OBJS)
 	rm -f $@
-	$(AR) rc $@ $^
-	$(RANLIB) $@
+	$(AR) -rc $@ $(OBJS)
 
 $(PCFILE): $(PCFILE).in
-	sed s,@prefix@,$(prefix),g $< > $@
-
-
-$(DESTDIR)$(includedir)/libnl-tiny/%: include/%
-	$(INSTALL) -D -m 644 $< $@
-
-$(DESTDIR)$(libdir)/%: %
-	$(INSTALL) -D -m 644 $< $@
-
-$(DESTDIR)$(libdir)/pkgconfig/%: %
-	$(INSTALL) -D -m 644 $< $@
-
+	sed 's,@prefix@,$(prefix),g' $(PCFILE).in > $@
+
+install: $(ALL_LIBS) $(ALL_INCLUDES) $(PCFILE)
+	mkdir -p "$(DESTDIR)$(INCLUDEDIR)/libnl-tiny/netlink/genl"
+	for f in $(ALL_INCLUDES); do \
+		f="$${f#include/}"; \
+		cp "include/$$f" "$(DESTDIR)$(INCLUDEDIR)/libnl-tiny/$${f%/*}"; \
+	done
+	mkdir -p "$(DESTDIR)$(LIBDIR)"
+	for f in $(ALL_LIBS); do \
+		cp "$$f" "$(DESTDIR)$(LIBDIR)/"; \
+	done
+	mkdir -p "$(DESTDIR)$(PKGCONFIGDIR)"
+	cp "$(PCFILE)" "$(DESTDIR)$(PKGCONFIGDIR)/"
 
 .PHONY: all clean install