From 565de8b8a8b3532d07abba7a083763ac31ca28ee Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Mon, 8 Jan 2018 11:07:37 +0100
Subject: [PATCH] metadata: simplify generation of build depends from runtime
 depends

Runtime depends cannot have a buildtype suffix, and they never refer to
source package names. In addition, this adds warnings about unsatisfiable
dependencies.

Furthermore, this change fixes the generation of conditional build
dependencies for virtual packages provided by different source packages.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
---
 scripts/package-metadata.pl | 112 +++++++++++++-----------------------
 1 file changed, 41 insertions(+), 71 deletions(-)

diff --git a/scripts/package-metadata.pl b/scripts/package-metadata.pl
index b092db3565..c8ae27a730 100755
--- a/scripts/package-metadata.pl
+++ b/scripts/package-metadata.pl
@@ -399,18 +399,56 @@ sub get_conditional_dep($$) {
 }
 
 sub gen_package_mk() {
-	my %conf;
-	my %dep;
 	my $line;
 
 	parse_package_metadata($ARGV[0]) or exit 1;
 	foreach my $srcname (sort {uc($a) cmp uc($b)} keys %srcpackage) {
 		my $src = $srcpackage{$srcname};
 		my $variant_default;
-		my @srcdeps;
 		my %deplines = ('' => {});
 
 		foreach my $pkg (@{$src->{packages}}) {
+			foreach my $dep (@{$pkg->{depends}}) {
+				next if ($dep =~ /@/);
+
+				my $condition;
+
+				$dep =~ s/\+//g;
+				if ($dep =~ /^(.+):(.+)/) {
+					$condition = $1;
+					$dep = $2;
+				}
+
+				my $pkg_dep = $package{$dep};
+				unless (defined $pkg_dep) {
+					warn sprintf "WARNING: Makefile '%s' has a dependency on '%s', which does not exist\n",
+						$src->{makefile}, $dep;
+					next;
+				}
+
+				unless ($pkg_dep->{vdepends}) {
+					next if $srcname eq $pkg_dep->{src}{name};
+
+					my $depstr = "\$(curdir)/$pkg_dep->{src}{path}/compile";
+					my $depline = get_conditional_dep($condition, $depstr);
+					if ($depline) {
+						$deplines{''}{$depline}++;
+					}
+					next;
+				}
+
+				foreach my $vdep (@{$pkg_dep->{vdepends}}) {
+					my $pkg_vdep = $package{$vdep};
+					next if $srcname eq $pkg_vdep->{src}{name};
+
+					my $depstr = "\$(if \$(CONFIG_PACKAGE_$vdep),\$(curdir)/$pkg_vdep->{src}{path}/compile)";
+					my $depline = get_conditional_dep($condition, $depstr);
+					if ($depline) {
+						$deplines{''}{$depline}++;
+					}
+				}
+			}
+
 			next if defined $pkg->{vdepends};
 
 			my $config = '';
@@ -442,12 +480,6 @@ sub gen_package_mk() {
 			print "buildtypes-$src->{path} = ".join(' ', @{$src->{buildtypes}})."\n";
 		}
 
-		foreach my $dep (map { @{$_->{depends}} } @{$src->{packages}}) {
-			$dep =~ /@/ or do {
-				$dep =~ s/\+//g;
-				push @srcdeps, $dep;
-			};
-		}
 		foreach my $type ('', @{$src->{buildtypes}}) {
 			my $suffix = '';
 
@@ -489,68 +521,6 @@ sub gen_package_mk() {
 			}
 		}
 
-		foreach my $deps (@srcdeps) {
-			my $idx;
-			my $condition;
-			my $prefix = "";
-			my $suffix = "";
-			my $deptype = "";
-
-			if ($deps =~ /^(.+):(.+)/) {
-				$condition = $1;
-				$deps = $2;
-			}
-			if ($deps =~ /^(.+)\/(.+)/) {
-				$deps = $1;
-				$deptype = $2;
-				$suffix = "/$2";
-			}
-
-			my $pkg_dep = $package{$deps};
-			my @deps;
-
-			if ($pkg_dep->{vdepends}) {
-				@deps = @{$pkg_dep->{vdepends}};
-			} else {
-				@deps = ($deps);
-			}
-
-			foreach my $dep (@deps) {
-				$pkg_dep = $package{$deps};
-				if (defined $pkg_dep->{src}) {
-					unless (!$deptype || grep { $_ eq $deptype } @{$pkg_dep->{src}{buildtypes}}) {
-						warn sprintf "WARNING: Makefile '%s' has a build dependency on '%s/%s' but '%s' does not implement a '%s' build type\n",
-							$src->{makefile}, $pkg_dep->{src}{name}, $deptype, $pkg_dep->{src}{makefile}, $deptype;
-						next;
-					}
-					$idx = $pkg_dep->{src}{path};
-				} elsif (defined($srcpackage{$dep})) {
-					$idx = $srcpackage{$dep}{path};
-				}
-
-				if ($idx) {
-					$idx .= $suffix;
-
-					my $depline;
-					next if $srcname eq $pkg_dep->{src}{name}.$suffix;
-					next if $dep{$condition.":".$srcname."->".$idx};
-					next if $dep{$srcname."->($dep)".$idx} and $pkg_dep->{vdepends};
-					my $depstr;
-
-					if ($pkg_dep->{vdepends}) {
-						$depstr = "\$(if \$(CONFIG_PACKAGE_$dep),\$(curdir)/$idx/compile)";
-						$dep{$srcname."->($dep)".$idx} = 1;
-					} else {
-						$depstr = "\$(curdir)/$idx/compile";
-						$dep{$srcname."->".$idx} = 1;
-					}
-					$depline = get_conditional_dep($condition, $depstr);
-					if ($depline) {
-						$deplines{''}{$depline}++;
-					}
-				}
-			}
-		}
 		foreach my $suffix (sort keys %deplines) {
 			my $depline = join(" ", sort keys %{$deplines{$suffix}});
 			if ($depline) {
-- 
2.30.2