How can i initialize constant with derived values in HLSL?

Question

I'm trying to migrate this glsl code into hlsl (unity shader). But the compiler complains about the following lines:

#define Length float
const Length m = 1.0;
const Length km = 1000.0 * m;

where km is derived from m , and the error msg said:

'km': initial value must be a literal expression

Is there any way to solve this without just replacing m with its literal value manually?

I tried to google this but found nothing related, or maybe this question is just a complaint about HLSL's weak compiler.

Answer 1

According to glsl-to-hlsl-reference , we should use static const qualifiers in hlsl.