How to default to ReleaseFast? | Zig Programming Language | Page 1

graceful jasper Mar 10, 2023, 7:50 PM

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Do you use a build.zig file?

coarse sage Mar 10, 2023, 7:53 PM

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I'm trying to get my wasm project to default to ReleaseFast.
If I do zig build -Drelease=true then I get optimised code.

But, if I do this then I don't:

var optimize: std.builtin.Mode = b.standardOptimizeOption(.{.preferred_optimize_mode = .ReleaseFast});

const lib = b.addSharedLibrary(.{
   ...
   .optimize = optimize,
});

rm -rf zig-cache zig-out
zig build

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Yes, the snippet is from my build.zig

silver vigil Mar 10, 2023, 7:58 PM

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I think you can directly set .optimize to .ReleaseFast

graceful jasper Mar 10, 2023, 7:58 PM

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This function b.standardOptimizeOption returns .Debug when there is no -Drelease=true

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You can make 2 builds, but one with hardcoded .ReleaseFast

#How to default to ReleaseFast?