Error when compiling a Numba module with function using other functions inline

I reached out to the numba devs and they kindly answered that adding the @njit decorator after @cc.export will make the function call type resolution work and resolve.

So for example:

@cc.export('product','float64(float64[:], float64[:])')
@njit
def product(a, b):
    prod = 0
    for i in range(a.size):
        prod += a[i] * b[i]
    return prod

Will make the product function available to others. The caveat being that it is entirely possible in some cases that the inlined function ends up with a different type signature to that of the one declared AOT.