[GRASS-user] Re: CYGWIN

[Glynn Clements]

Luigi Ponti wrote:

> >> This is likely naive and/or just out of ignorance, but I am not sure 
> >> whether there is a chance to get GRASS 6.4 running on Cygwin should I be 
> >> able to compile it from source on my Cygwin installation. Sorry in 
> >> advance if this is nonsense.
> >>     
> >
> > All I know is that the binaries which I compiled work fine on my
> > Windows XP system.
> >   
> 
> Update: you are right -- it works on XP, but I am on Windows 7.
> While installing on Cygwin the packages required to compile GRASS, it 
> occurred to me I had read on Cygwin website that Windows 7 would have 
> been supported starting next major version 1.7 (see http://cygwin.com/). 
> However, 1.7 is in beta testing and available to install, which I did. 
> Things work much better, and now GRASS 6.4.0RC5 starts up fine with 
> tcltk gui.
> 
> First problem I encountered next is with the dbf driver. The output of 
> /db.connect -p/ seems ok:

> But when I do /db.test test1/ errors arise:

> select * from grass_test1
> EXECUTE: OK
> 1c1
> < 1|123.456|abcd
> ---
>  > 1|123.456000|abcd
> ERROR: RESULT: ******** ERROR ********

This should be harmless in practice. I get the same result with both
Cygwin and native versions of GRASS.

> insert into grass_test1 values ( 3, 0.0, '_''_' )
>       3 [main] db.execute 2616 fork: child -1 - died waiting for longjmp 
> before initialization, retry 0, exit code 0xC0000005, errno 11
> Resource temporarily unavailable: can't create fork

My guess is that this is a problem with Cygwin and Windows 7.

> Any idea what happens and/or testing hints for better diagnosis?

Not really. This may just be a case of Cygwin not fully supporting
Windows 7 yet.

-- 
Glynn Clements <glynn at gclements.plus.com>