Add support for a saving build objects in a separate directory.

Modifications are based on the linux kernel approach and
support two use cases:

  1) Add O= to the make command line
  'make O=/tmp/build all'

  2) Set environement variable BUILD_DIR to point to the desired location
  'export BUILD_DIR=/tmp/build'
  'make'

The second approach can also be used with a MAKEALL script
'export BUILD_DIR=/tmp/build'
'./MAKEALL'

Command line 'O=' setting overrides BUILD_DIR environent variable.

When none of the above methods is used the local build is performed and
the object files are placed in the source directory.

1 files changed, 7 insertions, 5 deletions

diff --git a/board/versatile/split_by_variant.sh b/board/versatile/split_by_variant.sh
index 576f238..25461c2 100755
--- a/board/versatile/split_by_variant.sh
+++ b/board/versatile/split_by_variant.sh
@@ -5,28 +5,30 @@
 # ---------------------------------------------------------
 # Set up the Versatile type define
 # ---------------------------------------------------------
+
+mkdir -p ${obj}include
 variant=PB926EJ-S
 if [ "$1" == "" ]
 then
 	echo "$0:: No parameters - using versatilepb_config"
-	echo "#define CONFIG_ARCH_VERSATILE_PB" > ./include/config.h
+	echo "#define CONFIG_ARCH_VERSATILE_PB" > ${obj}include/config.h
 	variant=PB926EJ-S
 else
 	case "$1" in
 	versatilepb_config	|	\
 	versatile_config)
-	echo "#define CONFIG_ARCH_VERSATILE_PB" > ./include/config.h
+	echo "#define CONFIG_ARCH_VERSATILE_PB" > ${obj}include/config.h
 	;;
 
 	versatileab_config)
-	echo "#define CONFIG_ARCH_VERSATILE_AB" > ./include/config.h
+	echo "#define CONFIG_ARCH_VERSATILE_AB" > ${obj}include/config.h
 	variant=AB926EJ-S
 	;;
 
 
 	*)
 	echo "$0:: Unrecognised config - using versatilepb_config"
-	echo "#define CONFIG_ARCH_VERSATILE_PB" > ./include/config.h
+	echo "#define CONFIG_ARCH_VERSATILE_PB" > ${obj}include/config.h
 	variant=PB926EJ-S
 	;;
 
@@ -36,5 +38,5 @@ fi
 # ---------------------------------------------------------
 # Complete the configuration
 # ---------------------------------------------------------
-./mkconfig -a versatile arm arm926ejs versatile NULL versatile
+$MKCONFIG -a versatile arm arm926ejs versatile NULL versatile
 echo "Variant:: $variant"