[OpenWrt-Devel] generate list of license information for packages

[thomas.langer at lantiq.com]

From: Thomas Langer <thomas.langer at lantiq.com>

Many packages define already metadata about their license (PKG_LICENSE),
but this is only included in the ipk files.

This change allows to create the information also on the build-host,
to get an overview on the used licenses.
In the full list, also all packages without this info are shown.

Signed-off-by: Thomas Langer <thomas.langer at lantiq.com>
---
This patch is created against BB, but should also be applicable for trunk.

diff --git a/include/package-dumpinfo.mk b/include/package-dumpinfo.mk
--- a/include/package-dumpinfo.mk
+++ b/include/package-dumpinfo.mk
@@ -43,7 +43,9 @@ Category: $(CATEGORY)
 Title: $(TITLE)
 Maintainer: $(MAINTAINER)
 Source: $(PKG_SOURCE)
-Type: $(if $(Package/$(1)/targets),$(Package/$(1)/targets),$(if $(PKG_TARGETS),$(PKG_TARGETS),ipkg))
+$(if $(PKG_LICENSE),License: $(PKG_LICENSE)
+)$(if $(PKG_LICENSE_FILES),LicenseFiles: $(PKG_LICENSE_FILES)
+)Type: $(if $(Package/$(1)/targets),$(Package/$(1)/targets),$(if $(PKG_TARGETS),$(PKG_TARGETS),ipkg))
 $(if $(KCONFIG),Kernel-Config: $(KCONFIG)
 )$(if $(BUILDONLY),Build-Only: $(BUILDONLY)
 )$(if $(HIDDEN),Hidden: $(HIDDEN)
diff --git a/scripts/metadata.pl b/scripts/metadata.pl
--- a/scripts/metadata.pl
+++ b/scripts/metadata.pl
@@ -858,6 +858,28 @@ sub gen_package_feeds() {
 	}
 }
 
+sub gen_package_license($) {
+	my $level = shift;
+	parse_package_metadata($ARGV[0]) or exit 1;
+	foreach my $name (sort {uc($a) cmp uc($b)} keys %package) {
+		my $pkg = $package{$name};
+		if ($pkg->{name}) {
+			if ($pkg->{license}) {
+				print "$pkg->{name}: ";
+				print "$pkg->{license}\n";
+				if ($pkg->{licensefiles} && $level == 0) {
+					print "\tFiles: $pkg->{licensefiles}\n";
+				}
+			} else {
+				if ($level == 1) {
+					print "$pkg->{name}: Missing license! ";
+					print "Please fix $pkg->{makefile}\n";
+				}
+			}
+		}
+	}
+}
+
 sub parse_command() {
 	my $cmd = shift @ARGV;
 	for ($cmd) {
@@ -867,6 +889,8 @@ sub parse_command() {
 		/^kconfig/ and return gen_kconfig_overrides();
 		/^package_source$/ and return gen_package_source();
 		/^package_feeds$/ and return gen_package_feeds();
+		/^package_license$/ and return gen_package_license(0);
+		/^package_licensefull$/ and return gen_package_license(1);
 	}
 	print <<EOF
 Available Commands:
@@ -876,6 +900,8 @@ Available Commands:
 	$0 kconfig [file] [config]	Kernel config overrides
 	$0 package_source [file] 	Package source file information
 	$0 package_feeds [file]		Package feed information in makefile format
+	$0 package_license [file] 	Package license information
+	$0 package_licensefull [file] 	Package license information (full list)
 
 EOF
 }
diff --git a/scripts/metadata.pm b/scripts/metadata.pm
--- a/scripts/metadata.pm
+++ b/scripts/metadata.pm
@@ -97,6 +97,8 @@ sub parse_package_metadata($) {
 		/^Submenu: \s*(.+)\s*$/ and $pkg->{submenu} = $1;
 		/^Submenu-Depends: \s*(.+)\s*$/ and $pkg->{submenudep} = $1;
 		/^Source: \s*(.+)\s*$/ and $pkg->{source} = $1;
+		/^License: \s*(.+)\s*$/ and $pkg->{license} = $1;
+		/^LicenseFiles: \s*(.+)\s*$/ and $pkg->{licensefiles} = $1;
 		/^Default: \s*(.+)\s*$/ and $pkg->{default} = $1;
 		/^Provides: \s*(.+)\s*$/ and do {
 			my @vpkg = split /\s+/, $1;
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