@Thomas008 shares some valuable experiences of using StaticCompiler to generate binaries out from Julia code: [image] StaticCompiler - Generating small binaries Static compilation with help of StaticCompiler Here I'd like to share some experiences of using... …

I benefited a lot from Thomas008’s tutorial on StaticCompiler. I am trying to make a dll of my own, I need to work with array data, but I encountered an error when I tried to compile the following code. I want to know if there is a way to fix it. function calc(a, b) a .*= b return 0 end pat…

[image] karei: function calc(a, b) a .*= b return 0 end path = compile_shlib(calc, (Vector{Int}, Vector{Int}), "./") The problem is that the operator .* needs GC allocations. So it is not compilable for StaticCompiler.

[image] Thomas008: operator .* needs GC allocations Wait, I thought x .*= y and other .=-like operators modify x in-place and therefore don’t allocate?

I also thought it modified x in-place. So do I need to write a for loop?

[image] Thomas008: The problem is that the operator .* needs GC allocations. So it is not compilable for StaticCompiler. This is not correct: julia> using BenchmarkTools julia> x, y = rand(0:9, 5), rand(0:9, 5) ([9, 9, 7, 7, 8], [1, 6, 7, 9, 4]) julia> @ballocated calc(x, y) 0

Oh yes, you are right. (I gave constants to calc, i.e. calc([1,2],[3,4]), which causes allocations. But using variables, which is the actual use, causes no allocations.)

I can repeat this error on my machine with StaticCompiler, although there are no allocations. This would be something to report to the issues of StaticCompiler: https://github.com/tshort/StaticCompiler.jl/issues

[image] karei: Warning: Found pointer references to julia data I don’t think it’s totally clear what we’re allowed to do, but it seems clear we can’t work on Vector{Int}: To enable code to be statically compiled, consider the following: Avoid Julia’s internal allocations. That means don’t…

Yes, Vector{Int} is off the table. Either use MallocArrays or define your own vector type, like I did in Successful Static Compilation of Julia Code for use in Production . That also contains some discussion of how to call it from Python.

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General Usage

Thomas008 November 27, 2025, 5:41pm 3

The problem is that the operator .* needs GC allocations. So it is not compilable for StaticCompiler.

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New on Forem: “StaticCompiler - Generating small binaries"

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