Add Windows-only build.zig

.gitignore

@@ -12,4 +12,5 @@ t2-output
 .cxx
 build
 kk
-vc
+vc
+/zig-cache

build.zig

@@ -0,0 +1,50 @@
+const std = @import("std");
+
+const cflags: []const []const u8 = &.{
+    "-Wall",
+    "-Wextra",
+    "-pedantic",
+    "-Wno-switch",
+    "-Wno-unused-function",
+    "-Wno-implicit-fallthrough",
+    "-std=c11",
+};
+
+pub fn build(b: *std.build.Builder) void {
+    // Standard release options allow the person running `zig build` to select
+    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
+    const mode = b.standardReleaseOptions();
+    const target = b.standardTargetOptions(.{});
+
+    const lib = b.addStaticLibrary("minifb-zig-port", null);
+    lib.addCSourceFiles(&.{
+        "src/MiniFB_common.c",
+        "src/MiniFB_internal.c",
+        "src/MiniFB_timer.c",
+        "src/windows/WinMiniFB.c",
+    }, cflags);
+    lib.addIncludeDir("src");
+    lib.addIncludeDir("include");
+    lib.linkSystemLibraryName("gdi32");
+    lib.linkLibC();
+    lib.setBuildMode(mode);
+    lib.install();
+
+    addExample(b, "noise", "tests/noise.c", lib, target, mode);
+    addExample(b, "multiple-windows", "tests/multiple_windows.c", lib, target, mode);
+    addExample(b, "input-events", "tests/input_events.c", lib, target, mode);
+    addExample(b, "hidpi", "tests/hidpi.c", lib, target, mode);
+}
+
+fn addExample(b: *std.build.Builder, comptime name: []const u8, file: []const u8, lib: *std.build.LibExeObjStep, target: std.zig.CrossTarget, mode: std.builtin.Mode) void {
+    const exe = b.addExecutable(name, null);
+    exe.setBuildMode(mode);
+    exe.setTarget(target);
+    exe.linkLibrary(lib);
+    exe.addIncludeDir("include");
+    exe.addCSourceFile(file, cflags);
+    exe.install();
+
+    const step_name = "run-" ++ name;
+    b.step("run-" ++ name, "Run " ++ name ++ " example").dependOn(&exe.run().step);
+}