[PATCH v3] scripts: target-metadata don't add PROFILES twice

[Paul Spooren]

Since 4ee3cf2b5a profiles with alternative vendor names may appear
multiple times in `tmp/.targetinfo` or `.targetinfo` (for
ImageBuilders).

The `target-metadata.pl` script adds these profiles then twice to
`PROFILE_NAMES` and the ImageBuilder show the profile twice when running
`make info`.

This patch removes duplicate profile IDs and only adds them once to
`.profiles.mk`.

Signed-off-by: Paul Spooren <mail at aparcar.org>
---
v3: don't use the Apache-2 licensed uniq function from a Perl lib

This duplicate entries were reported recently via this PR:
https://github.com/openwrt/openwrt/pull/3777

 scripts/target-metadata.pl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/target-metadata.pl b/scripts/target-metadata.pl
index bf6413d315..78f77b16d5 100755
--- a/scripts/target-metadata.pl
+++ b/scripts/target-metadata.pl
@@ -429,7 +429,8 @@ sub gen_profile_mk() {
 	my @targets = parse_target_metadata($file);
 	foreach my $cur (@targets) {
 		next unless $cur->{id} eq $target;
-		print "PROFILE_NAMES = ".join(" ", map { $_->{id} } @{$cur->{profiles}})."\n";
+		my @profile_ids_unique =  do { my %seen; grep { !$seen{$_}++} map { $_->{id} } @{$cur->{profiles}}};
+		print "PROFILE_NAMES = ".join(" ", @profile_ids_unique)."\n";
 		foreach my $profile (@{$cur->{profiles}}) {
 			print $profile->{id}.'_NAME:='.$profile->{name}."\n";
 			print $profile->{id}.'_HAS_IMAGE_METADATA:='.$profile->{has_image_metadata}."\n";
-- 
2.29.2