Re: [Bug-ddrescue] Re: ddrescue patch for unsigned/signed compiler warnings

[Christian Franke]

Hi Martin,
> Hi Antonio,
>
>    
> > Martin Koeppe wrote:
> >   >  Unfortunately gddrescue is not available for Windows.
> >
> > There is at least a cygwin port of ddrescue. Just search for "ddrescue
> > cygwin".
> >      
> yes, but I prefer a native Windows build because I need it on many different 
> boxes and only occasionally on one particular box. And all of the boxes don't 
> have cygwin installed.
>
>    

The Cygwin version of ddrescue does not require a Cygwin install. It 
requires only cygwin1.dll is in same directory or in the PATH. I have 
successfully run this ddrescue.exe also from a UBCD4Win Live CD without 
a Cygwin install.


I've done a quick build of a native Windows ddrescue.exe with MinGW g++. 
Required only few hacks (attached).

to build on MSYS:
$ ./configure
$ make

to build on Cygwin:
$ ./configure CXX=g++-3 CPPFLAGS=-mno-cygwin LDFLAGS=-mno-cygwin
$ make

(Or: cross-compile it on Linux :-)

But this version does not work with raw devices (e.g. 
'\\.\PhysicalDrive1') because lseek(., 0, SEEK_END) fails. The 
lseeki64() from MSVCRT.dll apparently cannot be used to determine the 
size of a raw device.

Did you actually try your code with a raw disk or CD/DVD device? Which 
MSVC version did you use?

Regards,
Christian

ddrescue-mingw.patch
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