[PATCH v3] debianize: Fix unexpected characters in package lists

[Anton Mikanovich <amikan@ilbers.de>]

Newer dpkg-deb versions got more pedantic to the control file format.

Introduce debian package list format helper to cleanup empty items or
unexpected commas in dependency options passing to the default control
file.

This prevents errors like:
| dpkg-deb: error: unexpected end of file in archive magic version number in *.deb
| Unexpected character ')' parsing formula 'Package (= ), Architecture (= ), $PackageType (= deb)'!
| There have been errors!
caused by empty DEBIAN_BUILD_DEPENDS value in the line:
| Build-Depends: debhelper-compat (= ${DEBIAN_COMPAT}), ${DEBIAN_BUILD_DEPENDS}
which results in:
| Build-Depends: debhelper-compat (= 13),

Signed-off-by: Anton Mikanovich <amikan@ilbers.de>
---

Changes since v2:
- Fix missing vardeps.

Changes since v1:
- Update also file headers.

 meta/classes/base.bbclass      | 16 ++++++++++++++++
 meta/classes/debianize.bbclass | 21 +++++++++++++++------
 2 files changed, 31 insertions(+), 6 deletions(-)

diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
index 7d4ab49f..c730eec9 100644
--- a/meta/classes/base.bbclass
+++ b/meta/classes/base.bbclass
@@ -1,4 +1,8 @@
+# This software is a part of ISAR.
+#
 # Copyright (C) 2003  Chris Larson
+# Copyright (C) 2015-2025 ilbers GmbH
+# Copyright (C) 2017-2025 Siemens AG
 #
 # Permission is hereby granted, free of charge, to any person obtaining a
 # copy of this software and associated documentation files (the "Software"),
@@ -334,3 +338,15 @@ do_unpack[postfuncs] += "create_source_date_epoch_stamp"
 
 def get_source_date_epoch_value(d):
     return oe.reproducible.epochfile_read(d.getVar('SDE_FILE'), d)
+
+def deb_list_beautify(d, varname):
+    line = d.getVar(varname)
+    if not line:
+        return ''
+
+    var_list = []
+    for a in line.split(','):
+        stripped = a.strip()
+        if stripped:
+            var_list.append(stripped)
+    return ', '.join(var_list)
diff --git a/meta/classes/debianize.bbclass b/meta/classes/debianize.bbclass
index 5e9d76f3..4989c601 100644
--- a/meta/classes/debianize.bbclass
+++ b/meta/classes/debianize.bbclass
@@ -1,6 +1,7 @@
 # This software is a part of ISAR.
 # Copyright (C) 2017-2019 Siemens AG
 # Copyright (C) 2021 Siemens Mobility GmbH
+# Copyright (C) 2025 ilbers GmbH
 #
 # SPDX-License-Identifier: MIT
 
@@ -18,6 +19,8 @@ DEBIAN_CHANGELOG_TIMESTAMP ??= "3600"
 DESCRIPTION ??= "must not be empty"
 MAINTAINER ??= "Unknown maintainer <unknown@example.com>"
 
+DEBIANIZE_BUILD_DEPENDS ?= "debhelper-compat (= ${DEBIAN_COMPAT}), ${DEBIAN_BUILD_DEPENDS}"
+
 deb_add_changelog() {
 	changelog_v="${CHANGELOG_V}"
 	timestamp="${DEBIAN_CHANGELOG_TIMESTAMP}"
@@ -66,6 +69,12 @@ EOF
 }
 
 
+deb_create_control[vardeps] += "DEBIANIZE_BUILD_DEPENDS \
+                                DEBIAN_DEPENDS \
+                                DEBIAN_PROVIDES \
+                                DEBIAN_REPLACES \
+                                DEBIAN_BREAKS \
+                                DEBIAN_CONFLICTS"
 deb_create_control() {
 	cat << EOF > ${S}/debian/control
 Source: ${BPN}
@@ -73,15 +82,15 @@ Section: misc
 Priority: optional
 Standards-Version: 3.9.6
 Maintainer: ${MAINTAINER}
-Build-Depends: debhelper-compat (= ${DEBIAN_COMPAT}), ${DEBIAN_BUILD_DEPENDS}
+Build-Depends: ${@ deb_list_beautify(d, 'DEBIANIZE_BUILD_DEPENDS')}
 
 Package: ${BPN}
 Architecture: ${DPKG_ARCH}
-Depends: ${DEBIAN_DEPENDS}
-Provides: ${DEBIAN_PROVIDES}
-Replaces: ${DEBIAN_REPLACES}
-Breaks: ${DEBIAN_BREAKS}
-Conflicts: ${DEBIAN_CONFLICTS}
+Depends: ${@ deb_list_beautify(d, 'DEBIAN_DEPENDS')}
+Provides: ${@ deb_list_beautify(d, 'DEBIAN_PROVIDES')}
+Replaces: ${@ deb_list_beautify(d, 'DEBIAN_REPLACES')}
+Breaks: ${@ deb_list_beautify(d, 'DEBIAN_BREAKS')}
+Conflicts: ${@ deb_list_beautify(d, 'DEBIAN_CONFLICTS')}
 Multi-Arch: ${DEBIAN_MULTI_ARCH}
 Description: ${DESCRIPTION}
 EOF
-- 
2.34.1

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