Unresoled symbol linker error

[roktsyntst]

Hopefully the last major question on this project...

I know what this error typically means - that the linker couldn't find the function definition that you used and declared. But I'm confused. I have two cpp files (driver and MemoryManager) and a header file (MemoryManager). part of driver.cpp's main():

// previously defined simple class called MyTest
MemoryManager::Mgr mem( MemoryManager::printall );
MyTest* foo = mem.alloc<MyTest>();

Now in the header file:

class Mgr {

public:
	// some snippage, I think these are the relevant parts
	template< class T > T* alloc( int = 1 );
protected:
	pvomap allPtrs;

};

And in the definition file:

	template<class T> T* Mgr::alloc( int a ) {

		T* ptr = new T[a];
		allPtrs[ ptr ] += a;
		return ptr;

	}

This function gets called and appears to me to be defined. Using Borland 5.5.1, I run:
bcc32 driver.cpp MemoryManager.cpp
It compiles correctly but generates the linker error:
Unresolved external 'MyTest * MemoryManager::Mgr::alloc<MyTest>(int)' referenced from DRIVER.OBJ. I cannot figure out why I'm getting this - the compiler doesn't complain that I've left a member function undefined or that I've defined one that doesn't exist, and as near as I can tell the prototypes match. Can anybody see why it will not work? TIA!

[XSquared]

Are you sure that MemoryManager.cpp is including MemoryManager.h?

[roktsyntst]

Indeed, it is.