buildsys: add script to skip package unpacking

scripts/skip_unpack

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+################################################################################
+#      This file is part of OpenELEC - http://www.openelec.tv
+#      Copyright (C) 2009-2014 Stephan Raue (stephan@openelec.tv)
+#
+#  OpenELEC is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  OpenELEC is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with OpenELEC.  If not, see <http://www.gnu.org/licenses/>.
+################################################################################
+
+. config/options $1
+
+if [ -z "$1" ]; then
+  echo "usage: $0 package_name"
+  exit 1
+fi
+
+if [ ! -f $PKG_DIR/package.mk ]; then
+  printf "${boldred}$1: no package.mk file found${endcolor}\n"
+  exit 1
+fi
+
+STAMP=$PKG_BUILD/.openelec-unpack
+
+if [ -f $STAMP ] ; then
+  printf "%${BUILD_INDENT}c ${boldcyan}SKIP_UNPACK${endcolor}   $1\n" ' '>&$SILENT_OUT
+  export BUILD_INDENT=$((${BUILD_INDENT:-1}+$BUILD_INDENT_SIZE))
+
+  rm -f $STAMP
+  STAMP_DEPENDS="$PKG_DIR $PKG_NEED_UNPACK $PROJECT_DIR/$PROJECT/patches/$PKG_NAME"
+  PKG_DEEPMD5=$(md5deep -r $STAMP_DEPENDS 2>/dev/null | sort | md5sum | cut -d" " -f1)
+  for i in PKG_NAME PKG_DEEPMD5; do
+    eval val=\$$i
+    echo "STAMP_$i=\"$val\"" >> $STAMP
+  done
+fi