Re: [Qemu-devel] [RfC PATCH] gtk: switch to gtk3 by default, depricate gtk2.

["Daniel P. Berrange" <berrange@redhat.com>]

On Thu, Jul 07, 2016 at 04:27:40PM +0200, Gerd Hoffmann wrote:
> This patch drops gtk version detection.  gtk3 is used unless you
> explicitly ask for gtk2.  Additionally configure prints an error
> message in case it finds gtk2 but not gtk3.
> 
> Old behavior:
>   only gtk3 installed     -- use gtk3
>   both gtk2+3 installed   -- use gtk2
>   only gtk2 installed     -- use gtk2
>   no gtk installed at all -- build without gtk ui
> 
> New behavior:
>   only gtk3 installed     -- use gtk3
>   both gtk2+3 installed   -- use gtk3
>   only gtk2 installed     -- error out
>   no gtk installed at all -- build without gtk ui
> 
> It is still possible to build with gtk2, but you have to explicitly
> ask for it using --with-gtkabi=2.0.
> 
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
>  configure | 22 ++++++++++++++--------
>  1 file changed, 14 insertions(+), 8 deletions(-)
> 
> diff --git a/configure b/configure
> index e9090a0..af49eed 100755
> --- a/configure
> +++ b/configure
> @@ -2154,14 +2154,20 @@ fi
>  # GTK probe
>  
>  if test "$gtkabi" = ""; then
> -    # The GTK ABI was not specified explicitly, so try whether 2.0 is available.
> -    # Use 3.0 as a fallback if that is available.
> -    if $pkg_config --exists "gtk+-2.0 >= 2.18.0"; then
> -        gtkabi=2.0
> -    elif $pkg_config --exists "gtk+-3.0 >= 3.0.0"; then
> -        gtkabi=3.0
> -    else
> -        gtkabi=2.0
> +    gtkabi=3.0
> +    if !$pkg_config --exists "gtk+-3.0 >= 3.0.0" &&
> +       $pkg_config --exists "gtk+-2.0 >= 2.18.0"; then
> +        echo ""
> +        echo "ERROR: gtk3 not found, gtk2 is present though."
> +        echo ""
> +        echo "We strongly recomment to install the gtk3 devel packages and"
> +        echo "build qemu with gtk3.  gtk2 support is depricated and will be"

s/depricated/deprecated/

> +        echo "dropped (removal scheduled for 2018)."
> +        echo ""
> +        echo "If it is really your intention to build qemu with gtk2 re-run"
> +        echo "configure with --with-gtkabi=2.0."
> +        echo ""
> +        exit 1
>      fi
>  fi

Reviewed-by: Daniel P. Berrange <berrange@redhat.com>


Regards,
Daniel
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