Re: Any Cygwin tool to change .exe subsystem type ?

[Christian Franke <Christian dot Franke at t-online dot de>]

Charles Wilson wrote:
> Dave Korn wrote:
>   
> > Christian Franke wrote:
> >     
> > > Is there any tool in the Cygwin distro that allows to change subsystem
> > > type (Console, GUI, ...) of an already linked .exe ?
> > >
> > > Same operation as e.g. 'editbin /subsystem:windows ...', but without the
> > > need to have MS tools installed.
> > >
> > >       
> >   Not yet, but it would make a great PTC for the new 'peflags' tool recently
> > discussed on this list.
> >     
>
>   

If desired, I can later provide a patch that adds some 'peflags 
--subsystem=...'.


For now, I use a quick hack within the project's Makefile.
It first checks the header magic number and then:

$ echo -ne '\002\000' | dd bs=1 count=2 seek=220 conv=notrunc of=file.exe

:-)

This works because apparently all cygwin and mingw compiled .exe have 
the optional header at the same position.


> Actually, I think THIS functionality, as well as the ability to set the
> date field of a PE object as recently mentioned on the gcc list, is a
> better fit for objdump.

I agree, but shouldn't this be a function of objcopy ?

--
Christian Franke


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