add proper package dependency handling

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@3679 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/rules.mk

@@ -3,7 +3,6 @@ ifneq ($(DUMP),)
 all: dumpinfo
 else
 all: compile
-endif
 
 define Build/DefaultTargets
 $(PKG_BUILD_DIR)/.prepared:
@@ -12,18 +11,31 @@ $(PKG_BUILD_DIR)/.prepared:
 	$(call Build/Prepare)
 	touch $$@
 
-$(PKG_BUILD_DIR)/.configured:
+$(PKG_BUILD_DIR)/.configured: $(PKG_BUILD_DIR)/.prepared
 	$(call Build/Configure)
 	touch $$@
 
-$(PKG_BUILD_DIR)/.built:
+ifeq ($(shell $(SCRIPT_DIR)/timestamp.pl -p $(PKG_BUILD_DIR) .),.)
+$(PKG_BUILD_DIR)/.prepared: clean
+endif
+
+$(PKG_BUILD_DIR)/.built: $(PKG_BUILD_DIR)/.configured
 	$(call Build/Compile)
 	touch $$@
 
+package-clean:
+	$(call Build/Clean)
+	rm -f $(PKG_BUILD_DIR)/.built
+
+package-recompile:
+	rm -f $(PKG_BUILD_DIR)/.built
+
+.PHONY: package-clean package-recompile
+
 define Build/DefaultTargets
 endef
 endef
-
+endif
 
 define Package/Default
 CONFIGFILE:=
@@ -64,15 +76,24 @@ IDIR_$(1):=$(PKG_BUILD_DIR)/ipkg/$(1)
 INFO_$(1):=$(IPKG_STATE_DIR)/info/$(1).list
 
 ifneq ($(PACKAGE_$(1)),)
-compile-targets: $$(IPKG_$(1))
+COMPILE_$(1):=1
 endif
 ifneq ($(DEVELOPER),)
-compile-targets: $$(IPKG_$(1))
+COMPILE_$(1):=1
 endif
 ifeq ($(PACKAGE_$(1)),y)
 install-targets: $$(INFO_$(1))
 endif
 
+ifneq ($$(COMPILE_$(1)),)
+ifeq ($$(shell $(SCRIPT_DIR)/timestamp.pl -p -x ipkg $$(IPKG_$(1)) $(PKG_BUILD_DIR)),$(PKG_BUILD_DIR))
+$(PKG_BUILD_DIR)/.built: package-recompile
+endif
+
+compile-targets: $$(IPKG_$(1))
+endif
+
+
 IDEPEND_$(1):=$$(strip $$(DEPENDS))
 
 DUMPINFO += \
@@ -103,19 +124,18 @@ $$(IDIR_$(1))/CONTROL/control: $(PKG_BUILD_DIR)/.prepared
 		[ -f ./ipkg/$(1).$$$$file ] && cp ./ipkg/$(1).$$$$file $$(IDIR_$(1))/CONTROL/$$$$file || true; \
 	done
 
-$$(IPKG_$(1)): $$(IDIR_$(1))/CONTROL/control $(PKG_BUILD_DIR)/.built $(PACKAGE_DIR)
+$$(IPKG_$(1)): $$(IDIR_$(1))/CONTROL/control $(PKG_BUILD_DIR)/.built
 	$(call Package/$(1)/install,$$(IDIR_$(1)))
+	mkdir -p $(PACKAGE_DIR)
 	$(IPKG_BUILD) $$(IDIR_$(1)) $(PACKAGE_DIR)
 
 $$(INFO_$(1)): $$(IPKG_$(1))
 	$(IPKG) install $$(IPKG_$(1))
 
 $(1)-clean:
-	rm -f $$(IPKG_$(1))
+	rm -f $(PACKAGE_DIR)/$(1)_*
 clean: $(1)-clean
 
-PACKAGES += $(1)
-
 ifneq ($(__DEFAULT_TARGETS),1)
 $(eval $(call Build/DefaultTargets))
 endif
@@ -163,6 +183,10 @@ define Build/Compile
 $(call Build/Compile/Default)
 endef
 
+define Build/Clean
+	$(MAKE) clean
+endef
+
 ifneq ($(DUMP),)
 dumpinfo:
 	$(DUMPINFO)
@@ -191,14 +215,9 @@ install:
 	@$(CMD_TRACE) "installing... "
 	@$(MAKE) install-targets $(MAKE_TRACE)
 
-mostlyclean:
 rebuild:
 	$(CMD_TRACE) "rebuilding... "
-	@-$(MAKE) mostlyclean 2>&1 >/dev/null
+	$(MAKE) package-clean compile $(MAKE_TRACE)
-	if [ -f $(PKG_BUILD_DIR)/.built ]; then \
-		$(MAKE) clean $(MAKE_TRACE); \
-	fi
-	$(MAKE) compile $(MAKE_TRACE)
 
 $(PACKAGE_DIR):
 	mkdir -p $@
@@ -210,4 +229,4 @@ clean:
 	rm -rf $(PKG_BUILD_DIR)
 endif
 
-.PHONY: all source prepare compile install clean dumpinfo
+.PHONY: all source prepare compile install clean rebuild dumpinfo compile-targets install-targets clean-targets

rules.mk

@@ -1,4 +1,7 @@
+ifeq ($(DUMP),)
 include $(TOPDIR)/.config
+endif
+
 SHELL=/bin/bash
 export SHELL
 

scripts/timestamp.pl

@@ -1,31 +1,47 @@
 #!/usr/bin/perl
 use strict;
 
-sub get_ts($) {
+sub get_ts($$) {
 	my $path = shift;
+	my $options = shift;
 	my $ts = 0;
-	open FIND, "find $path -not -path \\*.svn\\* -and -not -path \\*CVS\\* 2>/dev/null |";
+	my $fn = "";
+	-d "$path" and $path .= "/*";
+	open FIND, "find $path -not -path \\*.svn\\* -and -not -path \\*CVS\\* $options 2>/dev/null |";
 	while (<FIND>) {
-		open FILE, "<$_";
+		chomp;
+		my $file = $_;
+		open FILE, "<$file";
 		my @stat = stat FILE;
 		close FILE;
-		$ts = $stat[9] if ($stat[9] > $ts);
+		if ($stat[9] > $ts) {
+			$ts = $stat[9];
+			$fn = $file;
+		}
 	}
 	close FIND;
-	return $ts;
+	return ($ts, $fn);
 }
 
 (@ARGV > 0) or push @ARGV, ".";
 my $ts = 0;
 my $n = ".";
 my %options;
-foreach my $path (@ARGV) {
+while (@ARGV > 0) {
-	if ($path =~ /^-/) {
+	my $path = shift @ARGV;
+	if ($path =~ /^-x/) {
+		my $str = shift @ARGV;
+		$options{"-x"} .= " -and -not -path \\*".$str."\\*"
+	} elsif ($path =~ /^-/) {
 		$options{$path} = 1;
 	} else {
-		my $tmp = get_ts($path);
+		my ($tmp, $fname) = get_ts($path, $options{"-x"});
 		if ($tmp > $ts) {
+			if ($options{'-f'}) {
+				$n = $fname;
+			} else {
 				$n = $path;
+			}
 			$ts = $tmp;
 		}
 	}