add new generated shell script for portable download/untar

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4588 d0543943-73ff-0310-b7d9-9358b9ac24b2

build/getlib.sh.in

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+TAR=@TAR@
+ZCAT=@ZCAT@
+WGET=@WGET@
+CURL=@CURL@
+
+if [ -f $WGET ] ; then
+    DOWNLOAD_CMD=$WGET
+else
+    if [ -f $CURL ] ; then
+        DOWNLOAD_CMD="$CURL -O"
+    fi
+fi
+
+base=http://svn.freeswitch.org/downloads/libs
+tarfile=$1
+
+if [ ! -d $tarfile ] ; then
+    uncompressed=`echo $tarfile | sed "s/\.tar\.gz//g"`
+    uncompressed=`echo $uncompressed | sed "s/\.tgz//g"`
+
+    if [ ! -f $tarfile ] ; then
+	rm -fr $uncompressed
+	$DOWNLOAD_CMD $base/$tarfile
+	if [ ! -f $tarfile ] ; then
+	    echo cannot find $tarfile
+	    exit 1
+	fi
+    fi
+    if [ ! -d $uncompressed ] ; then
+	$ZCAT -c -d $tarfile | $TAR xf -
+    fi
+fi
+
+exit 0
+