Error on rebuild in Windows "cp: missing destination file operand after"

[Stephan Bergmann]

On 10/16/2012 11:14 AM, d.ostrovsky at idaia.de wrote:
> Quoting David Tardon <dtardon at redhat.com>:
>>> Basically it seems that in the command:
>>> "cp  $W/Extension/report-builder/root"
>>>  it's missing the first operand....
>>>
>> It is a use case that nobody has ever tried before, because en-US is the
>> default language. The line comes from solenv/gbuild/ExtensionTarget.mk
>> and the missing argument(s) is a list of files based on $(gb_WITH_LANG),
>> but _without_ en-US. Since $(gb_WITH_LANG) contains _nothing but_ en-US
>> in your case, there are no files to copy...
>>
> the easiest way to sort this out would be to add a check in configure.in
> for that:
> if --with-lang="en-US" then fail or unset WITH_LANG, right?

No, the easiest thing should be to fix solenv/gbuild/ExtensionTarget.mk. 
  I understand that the other David is doing that.

Stephan