[PATCH v2] ld/testsuite: don't output to /dev/null

[Howard Chu]

Clément Chigot via Binutils wrote:
> Mingw doesn't have /dev/null and thus "-o /dev/null" will fail.
> Currently, all the options are checked using this "-o /dev/null",
> resulting in them being disabled on mingw hosts.
> Fix that by outputting to a real file for all targets.

Unless you expect that saving the output will be useful, you could simply
set the $fno variable to "nul:" when running on a Windows OS, and leave it
set to "/dev/null" otherwise.

> 
> ld/ChangeLog:
> 
> 	* testsuite/config/default.exp: Replace "-o /dev/null" by a
> 	file.
> ---
>  ld/testsuite/config/default.exp | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/ld/testsuite/config/default.exp b/ld/testsuite/config/default.exp
> index 257fd4ba985..1b568b6f8bb 100644
> --- a/ld/testsuite/config/default.exp
> +++ b/ld/testsuite/config/default.exp
> @@ -383,6 +383,7 @@ proc compiler_supports { flag args } {
>  	    append flags " [board_info [target_info name] ldflags]"
>  	}
>  	set fn "cs[pid].c"
> +	set fno "cs[pid].exe"
>  	set f [open $fn "w"]
>  	if { [llength $args] > 0 } {
>  	    puts $f [lindex $args 0]
> @@ -391,7 +392,8 @@ proc compiler_supports { flag args } {
>  	}
>  	close $f
>  	set rfn [remote_download host $fn]
> -	set avail [run_host_cmd_yesno "$CC_FOR_TARGET" "$flags $flag $rfn -o /dev/null"]
> +	set avail [run_host_cmd_yesno "$CC_FOR_TARGET" "$flags $flag $rfn -o $fno"]
> +	file delete $fno
>  	remote_file host delete $rfn
>  	file delete $fn
>  	return $avail
> 


-- 
  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/