kconfig: show an error message when defconfig is not found

When a non-existing defconfig is specified,
display an easy-to-understand message
(fake the error message on Linux Kernel):

  $ make foo_defconfig
  ***
  *** Can't find default configuration "confis/foo_defconfig"!
  ***

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Stephen Warren <swarren@nvidia.com>

diff --git a/scripts/multiconfig.sh b/scripts/multiconfig.sh
index a5790428c852422a3d330e4d7089afa818737c92..49fcfad3c13d62d10a31d4e8fdfb2e1ddce0bf51 100644 (file)
--- a/scripts/multiconfig.sh
+++ b/scripts/multiconfig.sh
@@ -118,6 +118,13 @@ do_board_defconfig () {
        defconfig_path=$srctree/configs/$1
        tmp_defconfig_path=configs/.tmp_defconfig
 
+       if [ ! -r $defconfig_path ]; then
+               echo >&2 "***"
+               echo >&2 "*** Can't find default configuration \"confis/$1\"!"
+               echo >&2 "***"
+               exit 1
+       fi
+
        mkdir -p arch configs
        # defconfig for Normal:
        #  pick lines without prefixes and lines starting '+' prefix