[PATCH] bitbake.conf: use PACKAGE_ARCH instead of TARGET_ARCH in SDK_NAME

[Martin Jansa <martin.jansa@gmail.com>]

* also use weak assignment for SDK_NAME_PREFIX as suggested by khem
* PACKAGE_ARCH is not 100% right too, because such SDK image usually has few
  machine specific packages included (e.g. base-files, securetty, opkg configs)
  but those are not important for SDK users so it's better to have one SDK for
  whole e.g. armv7a-vfp-neon then 6 SDK for each machine which would work the
  same.
  You can see diff between crespo and om-gta04 SDK here:
  http://build.shr-project.org/shr-core-staging/031/sdk/oecore-i686-armv7a-vfp-neon-toolchain-efl-crespo-om-gta04.diff

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 meta/conf/bitbake.conf |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 87bb71c..91f8397 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -364,8 +364,8 @@ PKGDATA_DIR = "${TMPDIR}/pkgdata/${MULTIMACH_TARGET_SYS}"
 # SDK variables, 
 ##################################################################
 
-SDK_NAME_PREFIX = "oecore"
-SDK_NAME = "${SDK_NAME_PREFIX}-${SDK_ARCH}-${TARGET_ARCH}"
+SDK_NAME_PREFIX ?= "oecore"
+SDK_NAME = "${SDK_NAME_PREFIX}-${SDK_ARCH}-${PACKAGE_ARCH}"
 SDKPATH = "/usr/local/${SDK_NAME_PREFIX}-${SDK_ARCH}"
 SDKPATHNATIVE = "${SDKPATH}/sysroots/${SDK_SYS}"
 
-- 
1.7.8.5