[PATCH v3] kbuild, deb-pkg: support overriding userland architecture

Asbjoern Sloth Toennesen
2010-12-09T15:31:56Z

Usefull if building for sparc64 userland, because the
sparc and sparc64 userlands use the same 64-bit kernel,
making it impossible to always select the correct userland
architecture for the resulting debian package.

Might also be usefull, if you want a i386 userland with a amd64 kernel.

Example usage:
make KBUILD_DEBARCH=i386 deb-pkg

LKML-reference: <alpine.DEB.2.02.1011051437500.13287@aurora.sdinet.de>
Signed-off-by: Asbjoern Sloth Toennesen <asbjorn@asbjorn.biz>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Acked-by: maximilian attems <max@stro.at>
---
Documentation/kbuild/kbuild.txt | 8 ++++++++
scripts/package/builddeb | 3 +++
2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/Documentation/kbuild/kbuild.txt b/Documentation/kbuild/kbuild.txt
index 634c625..9cf3bf0 100644
--- a/Documentation/kbuild/kbuild.txt
+++ b/Documentation/kbuild/kbuild.txt
@@ -60,6 +60,14 @@ But some architectures such as x86 and sparc have aliases.
x86: i386 for 32 bit, x86_64 for 64 bit
sparc: sparc for 32 bit, sparc64 for 64 bit

+KBUILD_DEBARCH
+--------------------------------------------------
+For the deb-pkg target, allows overriding the normal heuristics deployed by
+deb-deb. Normally deb-pkg attempts to guess the right architecture based on
+the UTS_MACHINE variable, and on some architectures also the kernel config.
+The value of KBUILD_DEBARCH is assumed (not checked) to be a valid Debian
+architecture.
+
CROSS_COMPILE
--------------------------------------------------
Specify an optional fixed part of the binutils filename.
diff --git a/scripts/package/builddeb b/scripts/package/builddeb
index 5d6be3f..ffe2419 100644
--- a/scripts/package/builddeb
+++ b/scripts/package/builddeb
@@ -54,6 +54,9 @@ create_package() {
echo "Please add support for $UTS_MACHINE to ${0} ..." >&2
echo "" >&2
esac
+ if [ -n "$KBUILD_DEBARCH" ] ; then
+ debarch="$KBUILD_DEBARCH"
+ fi
if [ -n "$debarch" ] ; then
forcearch="-DArchitecture=$debarch"
fi
--
1.7.2.3