const std = @import("std");

pub fn build(b: *std.Build) void {
    const target = b.resolveTargetQuery(.{
        .cpu_arch = std.Target.Cpu.Arch.x86,
        .ofmt = std.Target.ObjectFormat.elf,
        .abi = std.Target.Abi.none,
        .os_tag = std.Target.Os.Tag.freestanding,
        .cpu_features_sub = std.Target.x86.featureSet(&.{
            .mmx,
            .sse,
            .sse2,
            .avx,
            .avx2,
        }),
        .cpu_features_add = std.Target.x86.featureSet(&.{
            .soft_float,
        }),
    });

    const optimize = b.standardOptimizeOption(.{});

    const kernel = b.addExecutable(.{
        .name = "kernel",
        .root_module = b.createModule(.{
            .target = target,
            .optimize = optimize,
            .root_source_file = b.path("src/main.zig"),
        }),
    });
    kernel.setLinkerScript(b.path("kernel.ld"));

    b.installArtifact(kernel);

    const qemu = b.addSystemCommand(&[_][]const u8{
        "qemu-system-x86_64",
    });
    qemu.addArg("-kernel");
    qemu.addFileArg(kernel.getEmittedBin());

    const run = b.step("run", "Run QEMU");
    run.dependOn(&qemu.step);
}