[libvirt] [libvirt-glib] Make vala optional by default

[Daniel P. Berrange]

On Fri, Oct 21, 2011 at 10:59:12AM +0200, Christophe Fergeau wrote:
> 04368c60c added vala binding generation to libvirt-glib. To do
> that, it needs vapigen, so it checks for its presence during
> configure.
> However, configure errors out when vapigen is not found
> unless --disable-vala has been explicitly passed. In particular,
> vapigen must be available when running autogen.sh/configure without
> arguments.
> 
> This commit changes this behaviour to disable building of vala
> bindings when vapigen can't be found and no arguments were
> passed to configure. It will still error out when --enable-vala was
> specified and vapigen is not available.
> ---
>  configure.ac |   11 ++++++-----
>  1 files changed, 6 insertions(+), 5 deletions(-)
> 
> diff --git a/configure.ac b/configure.ac
> index c474f0b..b3fa808 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -205,12 +205,13 @@ if test "x$enable_introspection" = "xyes" ; then
>          if test "x$enable_vala" != "xno" ; then
>                  AC_PATH_PROG(VAPIGEN, vapigen, no)
>                  if test "x$VAPIGEN" != "xno"; then
> -                        if test "x$enable_vala" == "xcheck" ; then
> -                                enable_vala=yes
> -                                AC_SUBST(VAPIGEN)
> -                        fi
> +                        enable_vala=yes
>                  else
> -                        AC_MSG_ERROR([Cannot find the "vapigen" binary in your PATH])
> +                        if test "x$enable_vala" != "xcheck" ; then
> +                                AC_MSG_ERROR([Cannot find the "vapigen" binary in your PATH])
> +                        else
> +                                enable_vala=no
> +                        fi
>                  fi
>          fi
>  fi

ACK


Daniel
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