linux-kernel - [PATCH] deb-pkg: generate correct build dependencies

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Date:   Wed, 13 Mar 2019 02:23:24 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-kbuild@...r.kernel.org
Cc:     Ben Hutchings <ben@...adent.org.uk>,
        Riku Voipio <riku.voipio@...aro.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] deb-pkg: generate correct build dependencies

From: Riku Voipio <riku.voipio@...aro.org>

bison/flex is now needed always for building for kconfig. Some build
dependencies depend on kernel configuration, enable them as needed:

- libelf-dev when UNWINDER_ORC is set
- libssl-dev for SYSTEM_TRUSTED_KEYRING

Since the libssl-dev is needed for extract_cert binary, denote with
:native to install the libssl-dev for the build machines architecture,
rather than for the architecture of the kernel being built.

Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Signed-off-by: Riku Voipio <riku.voipio@...aro.org>
Reviewed-by: Ben Hutchings <ben@...adent.org.uk>
Acked-by: maximilian attems <maks@...o.at>
[masahiro.yamada: add change 'flex' to 'flex | flex:native' ]
Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

Hi Riku,

I did not get your update, but anyway I changed
'flex' to 'flex | flex:native'.

With this change, now I am able to cross-compile deb-pkg.


 scripts/package/mkdebian | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
index f030961..110cd8d 100755
--- a/scripts/package/mkdebian
+++ b/scripts/package/mkdebian
@@ -134,6 +134,8 @@ fi
 
 mkdir -p debian/
 echo $debarch > debian/arch
+extra_build_depends=", $(if_enabled_echo UNWINDER_ORC libelf-dev)"
+extra_build_depends="$extra_build_depends, $(if_enabled_echo SYSTEM_TRUSTED_KEYRING libssl-dev:native)"
 
 # Generate a simple changelog template
 cat <<EOF > debian/changelog
@@ -170,7 +172,7 @@ Source: $sourcename
 Section: kernel
 Priority: optional
 Maintainer: $maintainer
-Build-Depends: bc, kmod, cpio
+Build-Depends: bc, kmod, cpio, bison, flex | flex:native $extra_build_depends
 Homepage: http://www.kernel.org/
 
 Package: $packagename
-- 
2.7.4