How to include path infomation with multiplke calls to AddDirRoot

Following on from http://www.chilkatforum.com/questions/1487/dirprefix-how-do-you-use-this.

How do you include path information when calling AddDirRoot() multiple times? put_DirPrefix will work with across the entire tar, so it's not useful with multiple directories.

For example:

If I do a simple shell command:

tar -cf tmp/nmsconfig.tar etc/check_mk var/check_mk/precompiled/ var/check_mk/autochecks

tar -tf tmp/nmsconfig.tar returns (abbreviated for example)

etc/check_mk/
etc/check_mk/main.mk
etc/check_mk/mkeventd.mk
etc/check_mk/multisite.mk
var/check_mk/precompiled/
var/check_mk/precompiled/NMS_Dummy.py
var/check_mk/precompiled/nms_true_test150
var/check_mk/precompiled/nms
var/check_mk/autochecks/
var/check_mk/autochecks/nms_true_test150.mk
var/check_mk/autochecks/nms_true_test2.mk
var/check_mk/autochecks/nms.mk

However if I build the tar using chilkat, like this (error checking removed for brevity):

dirPath = _sitePath + "/etc/check_mk";
tar.AddDirRoot(dirPath.c_str());
dirPath = _sitePath + "/var/check_mk/precompiled";
tar.AddDirRoot(dirPath.c_str());
dirPath = _sitePath + "/var/check_mk/autochecks";
tar.AddDirRoot(dirPath.c_str());
//  write the tar
dirPath = _sitePath + "/tmp/nmsconfig.tar";
tar.WriteTar(dirPath.c_str());

a call to tar -tf tmp/nmsconfig.tar returns

main.mk
mkeventd.mk
multisite.mk
NMS_Dummy.py
nms
nms_true_test
nms_true_test.py
nms_true_test.mk
nms.mk

So it's missing all the path information and basically makes it unusable at the server end.

A call to put_DirPrefix() will just prepend the directory to all the contents of the tar, so I still can't tell which file cam from what path.

Is there any way you can add an option to AddDirRoot to include the path information when building the tar?

Thanks