Swedish Prime Minister Fredrik Reinfeldt says there is no backing in his country to change the EU's treaties, as he arrived at a European summit seen as the last chance to save the euro.

Asked about changing the EU's texts to enshrine greater fiscal discipline, as mooted by France and Germany, Reinfeldt said: "I have no support for a treaty change in Sweden as of now."

"We are of course willing to discuss different measures but I think the core of the problems we have in Europe is economic. They need to be dealt with now and in that capacity a treaty change could be too time-consuming," he added.

He said leaders should instead focus on implementing much-needed reforms in the most debt-stricken countries, boosting the EU's firewall against contagion in the crisis and introduce policies to get Europe's economy growing again.

In contrast, treaty change "is not at the heart of what we should be talking about tonight," he insisted.