ui: deprecate use of SDL 1.2 in favour of 2.0 series

The SDL 2.0 release was made in Aug, 2013:

  https://www.libsdl.org/release/

That will soon be 4 + 1/2 years ago, which is enough time to consider
the 2.0 series widely supported.

Thus we deprecate the SDL 1.2 support, which will allow us to delete it
in the last release of 2018. By this time, SDL 2.0 will be more than 5
years old.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20180115142533.24585-1-berrange@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/configure b/configure
index 044c6fafe2..96dee6572c 100755
--- a/configure
+++ b/configure
@@ -5668,6 +5668,12 @@ if test "$gtkabi" = "2.0"; then
     echo "WARNING: future releases. Please switch to using GTK 3.0"
 fi
 
+if test "$sdlabi" = "1.2"; then
+    echo
+    echo "WARNING: Use of SDL 1.2 is deprecated and will be removed in"
+    echo "WARNING: future releases. Please switch to using SDL 2.0"
+fi
+
 if test "$supported_cpu" = "no"; then
     echo
     echo "WARNING: SUPPORT FOR THIS HOST CPU WILL GO AWAY IN FUTURE RELEASES!"