Added wrapper for "ldd"

- The new "ldd" wrapper uses sb2-show to detect type of the binary, and then
  executes either ldd from target_root or simulates the host version
- a new command "binarytype" was added to sb2-show

1 files changed, 85 insertions, 0 deletions

diff --git a/wrappers/ldd b/wrappers/ldd
new file mode 100755
index 0000000..ceaef82
--- /dev/null
+++ b/wrappers/ldd
@@ -0,0 +1,85 @@
+#!/bin/bash
+#
+# "ldd" wrapper for scratchbox 2, to be used in the "devel" mode
+# (this wrapper requires that target tools are available
+# at "/target_root")
+#
+# "ldd" is used to print shared libraries required by a program.
+# Our problem is that it can be used to both host- and target
+# binaries; this wrapper first detects the type of the binary,
+# and then
+#  - runs the "ldd" from /target_root for target binaries
+#  - runs the binary with LD_TRACE_LOADED_OBJECTS=yes if
+#    it is a host binary (there were to be problems running
+#    the real "ldd" from inside sb2, but running ld.so
+#    with that env.variable produces the required result)
+#
+# FIXME: Command line options only work with target binaries!
+#
+# Copyright (c) 2008 Nokia Corporation.
+# All rights reserved.
+# Author: Lauri T. Aarnio
+#
+# Licensed under GPL version 2
+
+args="$*"
+prog="$0"
+progbase=`basename $0`
+
+function error_not_inside_sb2()
+{
+	echo "SB2: $progbase wrapper: This wrapper can only be used from inside"
+	echo "the scratchbox 2'ed environment"
+	exit 1
+}
+
+if [ -z "$SBOX_SESSION_DIR" ]
+then
+	error_not_inside_sb2
+fi
+
+. $SBOX_SESSION_DIR/sb2-session.conf
+
+if [ -z "$sbox_mapmode" -o -z "$sbox_dir" ]
+then
+	error_not_inside_sb2
+fi
+
+# read-in mode-specific settings
+if [ -f $sbox_dir/share/scratchbox2/modeconf/sb2rc.$sbox_mapmode ]
+then
+	. $sbox_dir/share/scratchbox2/modeconf/sb2rc.$sbox_mapmode "$progbase"
+fi
+
+OPTIONS=""
+FILES=""
+NUM_FILES=0
+
+for k in $args
+do
+	case $k in
+	-*) OPTIONS="$OPTIONS $k";;
+	*)  FILES="$FILES $k"
+	    NUM_FILES=`expr $NUM_FILES + 1`;;
+	esac
+done
+
+if [ $NUM_FILES -eq 0 ]
+then
+	exec /target_root/usr/bin/ldd $OPTIONS
+fi
+
+for f in $FILES
+do
+	if [ $NUM_FILES -gt 1 ]
+	then
+		echo "$f:"
+	fi
+	type=`sb2-show binarytype $f`
+	case "$type" in
+	target*) /target_root/usr/bin/ldd $OPTIONS $f;;
+	host/dynamic*) LD_TRACE_LOADED_OBJECTS=yes $f;;
+	*) echo "ldd wrapper: Don't know how to handle $f (type=$type)"
+	esac
+done
+