linux-kernel - [PATCH] kbuild/deb-pkg: annotate libelf-dev dependency as :native

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Message-Id: <20191230140747.50415-1-ardb@kernel.org>
Date:   Mon, 30 Dec 2019 15:07:47 +0100
From:   Ard Biesheuvel <ardb@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, masahiroy@...nel.org,
        michal.lkml@...kovi.net, riku.voipio@...aro.org,
        Ard Biesheuvel <ardb@...nel.org>
Subject: [PATCH] kbuild/deb-pkg: annotate libelf-dev dependency as :native

Cross compiling the x86 kernel on a non-x86 build machine produces
the following error when CONFIG_UNWINDER_ORC is enabled, regardless
of whether libelf-dev is installed or not.

  dpkg-checkbuilddeps: error: Unmet build dependencies: libelf-dev
  dpkg-buildpackage: warning: build dependencies/conflicts unsatisfied; aborting
  dpkg-buildpackage: warning: (Use -d flag to override.)

Since this is a build time dependency for a build tool, we need to
depend on the native version of libelf-dev so add the appropriate
annotation.

Signed-off-by: Ard Biesheuvel <ardb@...nel.org>
---
 scripts/package/mkdebian | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
index 7c230016b08d..357dc56bcf30 100755
--- a/scripts/package/mkdebian
+++ b/scripts/package/mkdebian
@@ -136,7 +136,7 @@ mkdir -p debian/source/
 echo "1.0" > debian/source/format
 
 echo $debarch > debian/arch
-extra_build_depends=", $(if_enabled_echo CONFIG_UNWINDER_ORC libelf-dev)"
+extra_build_depends=", $(if_enabled_echo CONFIG_UNWINDER_ORC libelf-dev:native)"
 extra_build_depends="$extra_build_depends, $(if_enabled_echo CONFIG_SYSTEM_TRUSTED_KEYRING libssl-dev:native)"
 
 # Generate a simple changelog template
-- 
2.20.1