Charles II of Spain dies just after the Siege of Vienna. What will the Habsburgs do? Go for the Spanish Crown against Louis XIV or conquer Hungary.
The War of the Spanish Succession and the Great Turkish War likely become interlocked, becoming the first de facto Continental War. Austria will formally declare war on France for the Spanish throne, but Austria, Poland, and Russia likely remains focused on the Ottomans. Britain, Netherlands, Portugal, Savoy, and Pro-Habsburg Spain teams up against France and Pro-France Spain. Sweden, Denmark-Norway, Brandenburg-Prussia and the rest of the HRE are wild cards about which sides they'll join. I just can't imagine Sweden, as militaristic as they were, not taking advantage of the war, and Denmark-Norway will automatically join the other side. Because of the fact Sweden has historically allied with France, I assume they join the French cause again.
So to answer your question: Austria focuses on Ottomans, while making token efforts into the war against France.
Britain is however not a thing: William III of Orange has not taken over yet. Charles II is still king of England and Scotland. William III did use a lot of effort to keep the French from expanding. Now with Charles II of England what is going to be the policy against France? Pro-France or anti-France?
Do not worry... Single digits of groom or bride maybe is not enough for stopping a wedding for Bourbons or Habsburg (but usually is more than enough) but no way anyone will propose or accept a wedding between siblings or half-siblings and also no way the Pope will accept to give the dispensation for that kind of wedding so...Wait! Why is Austria claiming the Spanish throne? Archduchess Maria Antonia is the de facto heiress, and is still unmarried in 1683. So she'll get sent off to Spain to be queen, and they'll set about finding a nice domesticable husband for her - not sure who, though. AIUI, it was only once the line of Margarita Teresa went bust that Louis XIV decided to go for all the marbles. France doesn't have to worry about Habsburg encirclement - since the only Habsburg archduke available to marry Maria Antonia is a) her half-brother and b) still in single digits (it's the Habsburgs so you never know, they might marry them). Louis will probably go for the Spanish Netherlands, which will piss the Dutch off. The Dutch will look for allies against France.
Do not worry... Single digits of groom or bride maybe is not enough for stopping a wedding for Bourbons or Habsburg (but usually is more than enough)
but no way anyone will propose or accept a wedding between siblings or half-siblings and also no way the Pope will accept to give the dispensation for that kind of wedding so...
And yes Maria Antonia, while alive, was the unquestionable heiress of every land under the rule of Spain but Milan (who would go back to her Imperial father, for being given to anyone he wanted)