[PATCH] debianize: add support for DEBIAN_BUILT_USING

["srinuvasan.a via isar-users" <isar-users@googlegroups.com>]

From: srinuvasan <srinuvasan.a@siemens.com>

Introduce the DEBIAN_BUILT_USING variable to allow setting the Built-Using field in auto-generated Debian control files.

This field declares that a binary package was built using parts of another source package or binaries. With this change,
user can now configure Built-Using directly in debian/control via the DEBIAN_BUILT_USING variable.

Examples:

A package using the source code from the gcc-4.6-source package:
Built-Using: gcc-4.6 (= 4.6.0-11)

A package including binaries from grub2 and loadlin:
Built-Using: grub2 (= 1.99-9), loadlin (= 1.6e-1)

Recipes can now simply define DEBIAN_BUILT_USING to populate this field automatically.

Note: Several upstream packages define this field, for example shim-signed, fwupd, and grub-efi-amd64-bin.

Signed-off-by: srinuvasan <srinuvasan.a@siemens.com>
---
 doc/user_manual.md             | 2 ++
 meta/classes/debianize.bbclass | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/doc/user_manual.md b/doc/user_manual.md
index 67f91973..313b9a63 100644
--- a/doc/user_manual.md
+++ b/doc/user_manual.md
@@ -1006,6 +1006,8 @@ Other (optional) customization variables include:
  - `DEBIAN_PROVIDES` - declare a virtual package to satisfy dependencies
  - `DEBIAN_REPLACES` - to replace a package with another
  - `DEBIAN_BREAKS` - Packages which break other packages
+ - `DEBIAN_BUILT_USING` - Used when a binary package includes parts of other source packages, f.e: by statically linking their libraries or embedding their
+    code or data during the build.
 
 ### Prebuilt .deb packages from somewhere
 
diff --git a/meta/classes/debianize.bbclass b/meta/classes/debianize.bbclass
index 4989c601..9197bc25 100644
--- a/meta/classes/debianize.bbclass
+++ b/meta/classes/debianize.bbclass
@@ -13,6 +13,7 @@ DEBIAN_PROVIDES ??= ""
 DEBIAN_REPLACES ??= ""
 DEBIAN_CONFLICTS ??= ""
 DEBIAN_BREAKS ??= ""
+DEBIAN_BUILT_USING ??= ""
 DEBIAN_MULTI_ARCH ??= "no"
 DEBIAN_COMPAT ??= "10"
 DEBIAN_CHANGELOG_TIMESTAMP ??= "3600"
@@ -74,6 +75,7 @@ deb_create_control[vardeps] += "DEBIANIZE_BUILD_DEPENDS \
                                 DEBIAN_PROVIDES \
                                 DEBIAN_REPLACES \
                                 DEBIAN_BREAKS \
+                                DEBIAN_BUILT_USING \
                                 DEBIAN_CONFLICTS"
 deb_create_control() {
 	cat << EOF > ${S}/debian/control
@@ -90,6 +92,7 @@ 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')}
+Built-Using: ${@ deb_list_beautify(d, 'DEBIAN_BUILT_USING')}
 Conflicts: ${@ deb_list_beautify(d, 'DEBIAN_CONFLICTS')}
 Multi-Arch: ${DEBIAN_MULTI_ARCH}
 Description: ${DESCRIPTION}
-- 
2.39.5

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