[scripts] add a helper script to bundle required libraries for host utilities

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33195 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/scripts/bundle-libraries.sh b/scripts/bundle-libraries.sh
new file mode 100755 (executable)
index 0000000..34cd08e
--- /dev/null
+++ b/scripts/bundle-libraries.sh
@@ -0,0 +1,114 @@
+#!/usr/bin/env bash
+#
+#   Script to install host system binaries along with required libraries.
+#   Refer to the --help output for more information.
+#
+#   Copyright (C) 2012 Jo-Philipp Wich <jow@openwrt.org>
+#
+#   This program 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.
+#
+#   This program 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 this program; if not, write to the Free Software
+#   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+DIR="$1"; shift
+
+_cp() {
+       cp ${VERBOSE:+-v} -L "$1" "$2" || {
+               echo "cp($1 $2) failed" >&2
+               exit 1
+       }
+}
+
+_md() {
+       mkdir ${VERBOSE:+-v} -p "$1" || {
+               echo "mkdir($1) failed" >&2
+               exit 2
+       }
+}
+
+_ln() {
+       ln ${VERBOSE:+-v} -sf "$1" "$2" || {
+               echo "ln($1 $2) failed" >&2
+               exit 3
+       }
+}
+
+for LDD in ${PATH//://ldd }/ldd; do
+       "$LDD" --version >/dev/null 2>/dev/null && break
+       LDD=""
+done
+
+[ -n "$LDD" -a -x "$LDD" ] || {
+       echo "Unable to find working ldd" >&2
+       exit 4
+}
+
+for BIN in "$@"; do
+       [ -n "$BIN" -a -x "$BIN" -a -n "$DIR" ] || {
+               echo "Usage: $0 <destdir> <executable> ..." >&2
+               exit 1
+       }
+
+       [ ! -d "$DIR/bundled/lib" ] && {
+               _md "$DIR/bundled/lib"
+               _md "$DIR/bundled/usr"
+               _ln "../lib" "$DIR/bundled/usr/lib"
+       }
+
+       LDSO=""
+
+       echo "Bundling ${BIN##*/}"
+       for token in $("$LDD" "$BIN" 2>/dev/null); do
+               case "$token" in */*.so*)
+                       case "$token" in
+                               *ld-*.so*) LDSO="${token##*/}" ;;
+                               *) echo " * lib: ${token##*/}" ;;
+                       esac
+
+                       dest="$DIR/bundled/lib/${token#*/lib*/}"
+                       ddir="${dest%/*}"
+
+                       [ -f "$token" -a ! -f "$dest" ] && {
+                               _md "$ddir"
+                               _cp "$token" "$dest"
+
+                               case "$token" in */tls/*.so*)
+                                       _cp "${token%/tls/*}/${token##*/}" "$DIR/bundled/lib/${token##*/}"
+                               ;; esac
+                       }
+               ;; esac
+       done
+
+       _md "$DIR"
+
+       # is a dynamically linked executable
+       if [ -n "$LDSO" ]; then
+               _cp "$BIN" "$DIR/bundled/${BIN##*/}"
+
+               [ -x "$DIR/bundled/run.sh" ] || {
+                       cat <<-EOF > "$DIR/bundled/run.sh"
+                               #!/usr/bin/env bash
+                               dir="\$(dirname "\$0")"
+                               bin="\$(basename "\$0")"
+                               exec -a "\$0" "\$dir/bundled/lib/$LDSO" --library-path "\$dir/bundled/lib" "\$dir/bundled/\$bin" "\$@"
+                       EOF
+                       chmod ${VERBOSE:+-v} 0755 "$DIR/bundled/run.sh"
+               }
+
+               _ln "./bundled/run.sh" "$DIR/${BIN##*/}"
+
+       # is a static executable or non-elf binary
+       else
+               echo " * not dynamically linked"
+               _cp "$BIN" "$DIR/${BIN##*/}"
+       fi
+done