Re: can a starkit create starkits?

On Aug 7, 10:06=A0am, Pat Thoyts <[email protected]> wrote:
> On 7 August 2010 14:18, jemptymethod <[email protected]> wrote:
>
>
>
> > Thanks for the guidance/suggestions. =A0To begin with I have decided to
> > embed both a cli and gui tclkit within my starkit, but then I cannot
> > "exec" the following command for creating a starkit:
>
> > C:/opt/deskwideweb/platform/DeskMLKit/dexygen.vfs/dxapp/bin/tclkit-cli
> > C:/opt/deskwideweb/platform/DeskMLKit/dexygen.vfs/dxapp/bin/sdx.kit
> > wrap appname.exe -runtime C:/opt/deskwideweb/platform/DeskMLKit/
> > dexygen.vfs/dxapp/bin/tclkit-gui
>
> > The above command will however run from:
>
> > a) shell prompt
> > b) using exec in a tcl script with my customary tcl interpreter,
> > i.e.: /usr/bin/tclsh (on cygwin)
>
> > Any ideas why the command won't run from within the starkit itself?
> > I've tried trapping/logging stderr/stdout as follows but it generates
> > an empty zero-byte sized file:
>
> > exec $cmd >& [file join $root_home log exec.log]
>
> Of course not. Think about what happens when you exec an application.
> The operating system locates file executable image in the filesystem,
> maps it into memory and creates various process memory structures and
> begins executing at some entry point. The operating system has no
> knowledge of Tcl's virtual filesystems so it cannot possibly map the
> executable from within such a system. You have to copy the image file
> out onto the native filesystem first before you can expect any native
> access methods to see it. eg:
> file copy vfs/file $env(TEMP)/tempfilename
> exec $env(TEMP)/tempfilename

Thanks for your further explanation (and patience ;) Pat, I will give
copying the tclkit executables out to the native filesystem a try.  I
have high confidence it will work as I'm already doing likewise for
the contents of the new .vfs directory I want to wrap, which is why I
can refer to "wrap appname.exe" with a relative path instead of
absolute: it's corresponding appname.vfs is already copied to the
current working directory, which I cd to from within my script.

Thanks again!  Tcl, tclkit and their respective communities are
awesome!

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