Setup Zig for Gamedev for OSX basd on https://zig.news/kristoff/how-to-release-your-zig-applications-2h90

build.zig

const std = @import("std");

pub fn build(b: *std.build.Builder) void {
    const target = b.standardTargetOptions(.{ .default_target = .{ .abi = .gnu } });
    const mode = b.standardReleaseOptions();

    const exe = b.addExecutable("hello-gamedev", "src/main.zig");
    exe.setTarget(target);
    exe.setBuildMode(mode);

    exe.linkSystemLibrary("sdl2");
    exe.linkLibC();
    exe.install();
}

main.zig

const std = @import("std");
const c = @cImport({
    @cInclude("SDL.h");
});

pub fn main() !void {
    _ = c.SDL_Init(c.SDL_INIT_VIDEO);
    defer c.SDL_Quit();

    var window = c.SDL_CreateWindow("hello gamedev", c.SDL_WINDOWPOS_CENTERED, c.SDL_WINDOWPOS_CENTERED, 640, 400, 0);
    defer c.SDL_DestroyWindow(window);

    var renderer = c.SDL_CreateRenderer(window, 0, c.SDL_RENDERER_PRESENTVSYNC);
    defer c.SDL_DestroyRenderer(renderer);

    mainloop: while (true) {
        var sdl_event: c.SDL_Event = undefined;
        while (c.SDL_PollEvent(&sdl_event) != 0) {
            switch (sdl_event.type) {
                c.SDL_QUIT => break :mainloop,
                else => {},
            }
        }

        _ = c.SDL_SetRenderDrawColor(renderer, 0xff, 0xff, 0xff, 0xff);
        _ = c.SDL_RenderClear(renderer);
        var rect = c.SDL_Rect{ .x = 0, .y = 0, .w = 60, .h = 60 };
        const a = 0.001 * @intToFloat(f32, c.SDL_GetTicks());
        const t = 2 * std.math.pi / 3.0;
        const r = 100 * @cos(0.1 * a);
        rect.x = 290 + @floatToInt(i32, r * @cos(a));
        rect.y = 170 + @floatToInt(i32, r * @sin(a));
        _ = c.SDL_SetRenderDrawColor(renderer, 0xff, 0, 0, 0xff);
        _ = c.SDL_RenderFillRect(renderer, &rect);
        rect.x = 290 + @floatToInt(i32, r * @cos(a + t));
        rect.y = 170 + @floatToInt(i32, r * @sin(a + t));
        _ = c.SDL_SetRenderDrawColor(renderer, 0, 0xff, 0, 0xff);
        _ = c.SDL_RenderFillRect(renderer, &rect);
        rect.x = 290 + @floatToInt(i32, r * @cos(a + 2 * t));
        rect.y = 170 + @floatToInt(i32, r * @sin(a + 2 * t));
        _ = c.SDL_SetRenderDrawColor(renderer, 0, 0, 0xff, 0xff);
        _ = c.SDL_RenderFillRect(renderer, &rect);
        c.SDL_RenderPresent(renderer);
    }
}

Build with zig build -Dtarget=aarch64-macos