build.zig

const Builder = @import("std").build.Builder;
const std = @import("std");
const cpu = @import("std").Target.arm;
pub fn build(b: *Builder) void {
    const mode = b.standardReleaseOptions();
    const lib = b.addStaticLibrary("krate", "src/main.zig");
    lib.setBuildMode(mode);
    lib.target = std.zig.CrossTarget{
        .cpu_arch = .thumb,
        .os_tag = .freestanding,
        .abi = .gnu,
        .cpu_model = .{ .explicit = &cpu.cpu.cortex_m4 },
    };

    lib.install();

    var main_tests = b.addTest("src/main.zig");
    main_tests.setBuildMode(mode);

    const test_step = b.step("test", "Run library tests");
    test_step.dependOn(&main_tests.step);
}