From 38fef4b4a81b849d572c3235f4412d356849236f Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Tue, 17 Oct 2006 19:01:08 +0000
Subject: [PATCH] add PROVIDES option, currently only used for menuconfig

SVN-Revision: 5194
---
 include/package.mk        |  2 ++
 scripts/gen_deps.pl       |  8 ++++++++
 scripts/gen_menuconfig.pl | 28 +++++++++++++++++++++-------
 3 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/include/package.mk b/include/package.mk
index 87e76be2b5..f9662978e9 100644
--- a/include/package.mk
+++ b/include/package.mk
@@ -78,6 +78,7 @@ define Package/Default
   SECTION:=opt
   CATEGORY:=Extra packages
   DEPENDS:=
+  PROVIDES:=
   EXTRA_DEPENDS:=
   MAINTAINER:=OpenWrt Developers Team <openwrt-devel@openwrt.org>
   SOURCE:=$(patsubst $(TOPDIR)/%,%,${shell pwd})
@@ -177,6 +178,7 @@ define BuildPackage
 	if [ "$$$$PREREQ_CHECK" = 1 ]; then echo "Prereq-Check: 1"; fi; \
 	echo "Version: $(VERSION)"; \
 	echo "Depends: $$(IDEPEND_$(1))"; \
+	echo "Provides: $(PROVIDES)"; \
 	echo "Build-Depends: $(PKG_BUILDDEP)"; \
 	echo "Category: $(CATEGORY)"; \
 	echo "Title: $(TITLE)"; \
diff --git a/scripts/gen_deps.pl b/scripts/gen_deps.pl
index 745d31c7d0..af206f0047 100755
--- a/scripts/gen_deps.pl
+++ b/scripts/gen_deps.pl
@@ -34,6 +34,12 @@ while ($line = <>) {
 		defined $pkg{$name} or $pkg{$name} = {};
 		$pkg{$name}->{src} = $src;
 	};
+	$line =~ /^Provides: \s*(.+)\s*$/ and do {
+		foreach my $vpkg (split /\s+/, $1) {
+			defined $pkg{$vpkg} or $pkg{$vpkg} = {};
+			$pkg{$vpkg}->{virtual} = 1;
+		}
+	};
 	$line =~ /^Prereq-Check:/ and !defined $prereq{$src} and do {
 		$pkg{$name}->{prereq} = 1;
 	};
@@ -52,6 +58,7 @@ $line="";
 foreach $name (sort {uc($a) cmp uc($b)} keys %pkg) {
 	my $config;
 	
+	next if defined $pkg{$name}->{virtual};
 	if ($options{SDK}) {
 		$conf{$pkg{$name}->{src}} or do {
 			$config = 'm';
@@ -69,6 +76,7 @@ foreach $name (sort {uc($a) cmp uc($b)} keys %pkg) {
 	my $depline = "";
 	foreach my $dep (@{$pkg{$name}->{depends}}) {
 		my $idx;
+		next if defined $pkg{$dep}->{virtual};
 		if (defined $pkg{$dep}->{src}) {
 			($pkg{$name}->{src} ne $pkg{$dep}->{src}) and $idx = $pkg{$dep}->{src};
 		} elsif (defined($pkg{$dep}) && !$options{SDK}) {
diff --git a/scripts/gen_menuconfig.pl b/scripts/gen_menuconfig.pl
index fe0dc27636..2a2511212b 100755
--- a/scripts/gen_menuconfig.pl
+++ b/scripts/gen_menuconfig.pl
@@ -30,9 +30,10 @@ sub close_submenu {
 sub find_dep($$) {
 	my $pkg = shift;
 	my $name = shift;
-	
-	return 0 unless defined $pkg->{depends};
-	foreach my $dep (@{$pkg->{depends}}) {
+	my $deps = ($pkg->{vdepends} or $pkg->{depends});
+
+	return 0 unless defined $deps;
+	foreach my $dep (@{$deps}) {
 		return 1 if $dep eq $name;
 		return 1 if ($package{$dep} and (find_dep($package{$dep},$name) == 1));
 	}
@@ -43,13 +44,13 @@ sub depends($$) {
 	my $a = shift;
 	my $b = shift;
 	my $ret;
-	
+
 	if (find_dep($a, $b->{name}) == 1) {
 		$ret = 1;
 	} elsif (find_dep($b, $a->{name}) == 1) {
 		$ret = -1;
 	} else {
-		$ret = 0;
+		return 0;
 	}
 #	print STDERR "depends($a->{name}, $b->{name}) == $ret\n";
 	return $ret;
@@ -93,8 +94,14 @@ sub print_category($) {
 				my $m = "depends";
 				$depend =~ s/^([@\+]+)//;
 				my $flags = $1;
-				$flags =~ /@/ or $depend = "PACKAGE_$depend";
-				$flags =~ /\+/ and $m = "select";
+				my $vdep;
+				
+				if ($vdep = $package{$depend}->{vdepends}) {
+					$depend = join("||", map { "PACKAGE_".$_ } @$vdep);
+				} else {
+					$flags =~ /@/ or $depend = "PACKAGE_$depend";
+					$flags =~ /\+/ and $m = "select";
+				}
 				print "\t\t$m $depend\n";
 			}
 			print "\t\thelp\n";
@@ -132,6 +139,13 @@ while ($line = <>) {
 	$line =~ /^Submenu: \s*(.+)\s*$/ and $pkg->{submenu} = $1;
 	$line =~ /^Submenu-Depends: \s*(.+)\s*$/ and $pkg->{submenudep} = $1;
 	$line =~ /^Default: \s*(.+)\s*$/ and $pkg->{default} = $1;
+	$line =~ /^Provides: \s*(.+)\s*$/ and do {
+		my @vpkg = split /\s+/, $1;
+		foreach my $vpkg (@vpkg) {
+			$package{$vpkg} or $package{$vpkg} = { vdepends => [] };
+			push @{$package{$vpkg}->{vdepends}}, $pkg->{name};
+		}
+	};
 	$line =~ /^Depends: \s*(.+)\s*$/ and do {
 		my @dep = split /\s+/, $1;
 		$pkg->{depends} = \@dep;