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Re: [Xen-devel] [PATCH for-4.7] configure: Fix when no libsystemd compat lib are available



On Tue, May 03, 2016 at 04:59:49PM +0100, Anthony PERARD wrote:
> From systemd change log, since version 209, libsystemd.so contain
> everything, including libsystemd-daemon.so. Distro may, or may not provide
> the compatibility libraries which libsystemd-daemon is part of.
> 
> So, if libsystemd-daemon is not available, check for the presence of
> a recent enough libsystemd.
> 
> Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>

Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

> ---
> Please, rerun ./autogen.sh on this patch.
> ---
>  m4/systemd.m4 | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/m4/systemd.m4 b/m4/systemd.m4
> index e4b1aa5..112dc11 100644
> --- a/m4/systemd.m4
> +++ b/m4/systemd.m4
> @@ -41,7 +41,9 @@ AC_DEFUN([AX_ALLOW_SYSTEMD_OPTS], [
>  ])
>  
>  AC_DEFUN([AX_CHECK_SYSTEMD_LIBS], [
> -     PKG_CHECK_MODULES([SYSTEMD], [libsystemd-daemon])
> +     PKG_CHECK_MODULES([SYSTEMD], [libsystemd-daemon],,
> +             [PKG_CHECK_MODULES([SYSTEMD], [libsystemd >= 209])]
> +        )
>       dnl pkg-config older than 0.24 does not set these for
>       dnl PKG_CHECK_MODULES() worth also noting is that as of version 208
>       dnl of systemd pkg-config --cflags currently yields no extra flags yet.
> @@ -94,8 +96,10 @@ AC_DEFUN([AX_CHECK_SYSTEMD], [
>  ])
>  
>  AC_DEFUN([AX_CHECK_SYSTEMD_ENABLE_AVAILABLE], [
> -     PKG_CHECK_MODULES([SYSTEMD], [libsystemd-daemon], [systemd="y"],
> -                          [systemd="n"])
> +     PKG_CHECK_MODULES([SYSTEMD], [libsystemd-daemon], [systemd="y"],[
> +             PKG_CHECK_MODULES([SYSTEMD], [libsystemd >= 209],
> +                               [systemd="y"],[systemd="n"])
> +     ])
>  ])
>  
>  dnl Enables systemd by default and requires a --disable-systemd option flag
> -- 
> Anthony PERARD
> 

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