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Date: Sun, 18 Nov 2012 11:29:16 +0100
From: Stefan Weil <sw@weilnetz.de>
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Subject: Re: [Qemu-devel] [PATCH] rng-random: only build on POSIX platforms
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To: Anthony Liguori <aliguori@us.ibm.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org

Am 17.11.2012 14:41, schrieb Anthony Liguori:
> There is no /dev/random on win32.
>
> Cc: Stefan Weil<weil@mail.berlios.de>
> Signed-off-by: Anthony Liguori<aliguori@us.ibm.com>
> ---
>   backends/Makefile.objs | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/backends/Makefile.objs b/backends/Makefile.objs
> index 875eebc..8836761 100644
> --- a/backends/Makefile.objs
> +++ b/backends/Makefile.objs
> @@ -1 +1,2 @@
> -common-obj-y += rng.o rng-random.o rng-egd.o
> +common-obj-y += rng.o rng-egd.o
> +common-obj-$(CONFIG_POSIX) += rng-random.o

The patch fixes a build issue on w32 / w64, but the reason given
is misleading: yes, Windows has no /dev files, but the MinGW
library tries to emulate the most important interfaces from /dev.

There is a /dev/random with MinGW, and it does what it is supposed
to do. See this URL for more supported "devices":
http://srv.onzk.net/linwin/apache-php3-mysql/CygWin_20b_98-4_Documents_OnLine/CygWin-Ug-Net/using-specialnames.html

Regards
Stefan W.