endif
 
     DUMPINFO += \
+       if [ "$$$$PREREQ_CHECK" = 1 ]; then echo "Prereq-Check: 1"; fi; \
        echo "Version: $(VERSION)"; \
        echo "Depends: $$(IDEPEND_$(1))"; \
        echo "Build-Depends: $(PKG_BUILDDEP)"; \
        echo "Category: $(CATEGORY)"; \
        echo "Title: $(TITLE)"; \
        echo "Description: $(DESCRIPTION)" | sed -e 's,\\,\n,g';
-
+       
     ifneq ($(URL),)
       DUMPINFO += \
        echo; \
 
 .SILENT: $(TMP_DIR) prereq
 
 define Require
+  export PREREQ_CHECK=1
   ifeq ($$(CHECK_$(1)),)
     prereq: prereq-$(1)
 
 
 include $(TOPDIR)/.config
 include $(TOPDIR)/.pkgdeps
 
-PREREQ_PACKAGES:=$(patsubst %,%-prereq,$(package-y) $(package-m))
+PREREQ_PACKAGES:=$(patsubst %,%-prereq,$(package-prereq))
 DOWNLOAD_PACKAGES:=$(patsubst %,%-download,$(package-y) $(package-m))
 COMPILE_PACKAGES:=$(patsubst %,%-compile,$(package-y) $(package-m))
 INSTALL_PACKAGES:=$(patsubst %,%-install,$(package-y))
 
 my $makefile;
 my %conf;
 my %pkg;
+my %prereq;
+my $prereq;
 my %dep;
 my %options;
 my $opt;
                defined $pkg{$name} or $pkg{$name} = {};
                $pkg{$name}->{src} = $src;
        };
+       $line =~ /^Prereq-Check:/ and !defined $prereq{$src} and do {
+               $prereq{$src} = 1;
+               $prereq .= "package-prereq += $src\n";
+       };
        $line =~ /^(Build-)?Depends: \s*(.+)\s*$/ and do {
                $pkg{$name}->{depends} ||= [];
                foreach my $v (split /\s+/, $2) {
 }
 
 if ($line ne "") {
-       print "\n$line";
+       print "\n$line\n$prereq";
 }