[PATCH GOLD] [4/N mingw host] lack of readv support

[Andrew Pinski <Andrew_Pinski at playstation dot sony dot com>]

Hi,
  Under mingw, readv does not exist.  Ian recommended that disabling
readv would be a good idea.  This patch does that by adding a
configure check to see if there is readv support and disables the
usage of readv if it is not supported.

This is the last of the cleaner patches.

OK?

Thanks,
Andrew Pinski

ChangeLog:
* configure.ac: Check for readv function also.
* config.in: Regenerate.
* configure: Regenerate.
* fileread.cc (File_read::do_readv): When we don't have readv, fatal error.
* fileread.h (File_read:: max_readv_entries): Set to 1 if readv does not exist.

Attachment: readv.diff.txt
Description: Text document