Which CHOST?

Eric Blake eblake@redhat.com
Mon Oct 11 20:39:00 GMT 2010

On 10/11/2010 02:21 PM, Al wrote:
> Hello,
> what is the current CHOST?

I'm not sure what you meant by CHOST - it's not an environment variable 
that I'm familiar with.  Who expects it to be set?  Did you mean target 

> It is i686-pc-cygwin1.7 according to this posting from Eric:
> http://www.cygwin.com/ml/cygwin/2009-02/msg00669.html

That patch was rejected upstream.

Running config.guess on cygwin 1.7.7 still intentionally produces:


> If I set the CHOST to i686-pc-cygwin1.7 I have troubles with some
> builds for example libiconv, gettext and zlib.

Supplying bogus target triplets to build machinery programs is not 
recommended.  Many configure programs (mistakenly) compare $host or 
$host_os (the autoconf names for the full target triplet and the third 
member of the triplet) against the pattern cygwin, rather than the glob 
cygwin*; and while those programs should probably be fixed upstream, 
they at least have the justification that they match the current 
config.guess program output, and that you probably shouldn't have 
supplied a triplet that wasn't documented in config.guess in the first 

Eric Blake   eblake@redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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