#how to set cli args in build.zig

1 messages · Page 1 of 1 (latest)

left obsidian
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I'm trying to have this option in the build file-O ReleaseFast -fstrip

also is there an article that shows all the cli arguments, or cli vs build.zig?

compact oracle
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-O style options aren't possible

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the equivalent is -Dflag and -Dkey=value syntax

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you can set up build options with b.option(...)

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// this makes it so you can pass `-Dflag`, `-Dflag=false`, or `-Dflag=true`.
// if unspecified the call will return `null`, and in this case that's handled
// by `orelse false`.
const flag = b.option(bool, "flag", "Flag description") orelse false;

// this makes it so you can pass `-Dstring=str`, where `str` is an arbitrary
// string of text. similar behaviour when unspecified.
const string = b.option([]const u8, "string", "String description") orelse "foo";

// this makes it so you can pass `-Dscalar=n`, where `n` is a string parsed 
// by `std.fmt.parseInt`. similar behaviour when unspecified.
const scalar = b.option(i64, "scalar", "Scalar description") orelse -1;

// this makes it so you can pass `-Denumeration=bar`, or `-Denumeration=baz`.
// similar behaviour when unspecified.
const enumeration = b.option(enum { bar, baz }, "enumeration", "Enumeration description") orelse .bar;

// where `T` is a type similar to any of the aforementioned types of build options,
// this makes it so you can pass `-Dlist={val}` multiple times with multiple values,
// constructing a list. For example, with `T=u16` `-Dlist=1 -Dlist=2 -Dlist=5` would
// construct a list like `&[]u16{ 1, 2, 5 }`.
// similar behaviour when unspecified.
const list = b.option([]const T, "list", "List description") orelse &.{};
gilded swift
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also TIL thats how the list stuff works, i could never figure it out lol

left obsidian
gilded swift
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alright yeah, in that case it's quite simple

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if you used zig init-exe to start a project it already provides the optimization flag

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for the strip flag you have to set the strip field of your exe/lib. best way imo is exe.strip = b.option(bool, "strip", ""); which exposes a strip flag to the cli so you can override it but it still keeps the default behavior of stripping under ReleaseSmall

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so the equivalent of your original question after adding that is -Doptimize=ReleaseFast -Dstrip

left obsidian
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tysm