Re: [Xen-devel] [PATCH for 4.6 v2] configure: don't silently disable systemd support

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Thu, 2015-09-10 at 12:18 +0100, Wei Liu wrote:
> Originally when user runs ./configure --enable-systemd and systemd
> development library is not available the build system silently disables
> systemd support. This is not in line with normal expectation.
> 
> Instead, configure should error out when user has asked for systemd
> support but development libraries can't be found.
> 
> Reported-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
> Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>

Acked + applied to staging + staging-4.6

> ---
> v2: invert the test to check for explicit "yes" value.
> 
> Please rerun ./autogen.sh.
> ---
>  m4/systemd.m4 | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/m4/systemd.m4 b/m4/systemd.m4
> index 8284993..e4b1aa5 100644
> --- a/m4/systemd.m4
> +++ b/m4/systemd.m4
> @@ -85,7 +85,11 @@ AC_DEFUN([AX_CHECK_SYSTEMD], [
>               AC_DEFINE([HAVE_SYSTEMD], [1], [Systemd available and
> enabled])
>                       systemd=y
>                       AX_CHECK_SYSTEMD_LIBS()
> -         ],[systemd=n])
> +         ],[
> +             AS_IF([test "x$enable_systemd" = "xyes"],
> +                     [AC_MSG_ERROR([Unable to find systemd
> development library])],
> +                     [systemd=n])
> +         ])
>       ],[systemd=n])
>  ])
>  

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