[PATCH:libICE] Add AC_USE_SYSTEM_EXTENSIONS to make asprintf() visible in GNU libc

[Gaetan Nadon]

On Tue, 2010-12-21 at 18:30 -0800, Alan Coopersmith wrote:

> asprintf is considered a GNU extension and thus one needs to define
> _GNU_SOURCE before including stdio.h.
> 
> Reported-by: Cyril Brulebois <kibi at debian.org>
> Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
> ---
>  configure.ac |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)
> 
> diff --git a/configure.ac b/configure.ac
> index 03432f5..88fbcd7 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -12,6 +12,11 @@ AC_CONFIG_HEADERS([config.h])
>  AM_INIT_AUTOMAKE([foreign dist-bzip2])
>  AM_MAINTAINER_MODE
>  
> +# Set common system defines for POSIX extensions, such as _GNU_SOURCE
> +# Must be called before any macros that run the compiler (like
> +# AC_PROG_LIBTOOL or XORG_DEFAULT_OPTIONS) to avoid autoconf errors.
> +AC_USE_SYSTEM_EXTENSIONS
> +
>  # Require xorg-macros minimum of 1.10 for DocBook XML documentation
>  m4_ifndef([XORG_MACROS_VERSION],
>            [m4_fatal([must install xorg-macros 1.10 or later before running autoconf/autogen])])


Not directly related to this patch, but the process.c file has a good
number of ^L characters showing up in vi.
It has probably been edited under a particular locale.
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