Pakistani leader Pervez Musharraf says the amount of foreign reconstruction aid pledged after the South Asia quake is "totally inadequate".
Musharraf says Pakistan may have to build 500,000 new homes
Gen Musharraf told the BBC that about $620m had been promised but that Pakistan needed about $5bn to rebuild devastated areas.
An estimated three million people in Pakistan lack adequate shelter.
The UN has appealed for urgent help to avoid a massive second wave of deaths over the fierce Himalayan winter.
Pakistan has confirmed 49,739 deaths, most of them in Pakistani-administered Kashmir. India says more than 1,400 have died in the sector of Kashmir it administers.
Ten thousand tents will be flown to Pakistan over the next few weeks, but the UN has warned there may not be enough tents suitable for winter conditions in the world to meet the needs of the earthquake victims.
On Friday, Turkey announced it was donating $150m in aid - the biggest donation by a country so far. It came after Prime Minister Recep Tayyip Erdogan toured disaster areas.
Gen Musharraf said he was confident earthquake survivors would get shelter before winter, although he accepted that there was still a serious shortage of tents.
The BBC's Barbara Plett in Islamabad says the Pakistani leader sounded more optimistic than international aid agencies.
Gen Musharraf said he was "reasonably confident" about the relief effort.
""I've spoken to the army commanders right at the grassroots level. I know their deployment exactly and what they exactly are doing.
"Now I'm not saying that there is no problem at all, there is a problem but I feel confident that before the onset of winter we would have reached out and hopefully provided even for shelters."
However the Pakistani leader expressed great concern over the shortfalls in international pledges for reconstruction.
"When we talk about reconstruction and rehabilitation, I think we haven't done anything about it as yet.
"Today I know that we have been donated about $620m or something, which is totally inadequate. I believe that it would be more than $5bn," he said.
The Pakistani leader said it was likely that Pakistan would need to build 500,000 new homes.
But he said Pakistan had been "galvanised" by the earthquake.
"The whole nation is helping and the army is helping, and I think we are feeling very happy with ourselves for having reacted in such a positive manner as a nation, army included."
The 26-nation Nato alliance agreed on Friday to send up to 1,000 troops to help Pakistan, including a battalion of engineers from Italy, Poland and Spain.