Port to zig 0.14.1

.gitignore

@@ -1,4 +1,5 @@
 **/zig-cache
+**/.zig-cache
 **/zig-out
 **/artifacts
 .DS_Store

Makefile

@@ -3,7 +3,7 @@
 MV=mv bin/Avalanche $(EXE)
 
 default:
-	zig build -Drelease-fast --prefix ./ -Dtarget-name="Avalanche"
+	zig build --release=fast -Dtarget-name="Avalanche"
 
 ifdef EXE
 	$(MV)

build.zig

@@ -6,7 +6,7 @@ const std = @import("std");
 pub const DateTime = struct { day: u8, month: u8, year: u16, hour: u8, minute: u8, second: u8 };
 
 pub fn timestamp2DateTime(timestamp: i64) DateTime {
-    const unixtime = @intCast(u64, timestamp);
+    const unixtime: u64 = @intCast(timestamp);
     const SECONDS_PER_DAY = 86400;
     const DAYS_IN_COMMON_YEAR = 365;
     const DAYS_IN_4_YEARS = 1461;
@@ -15,29 +15,29 @@ pub fn timestamp2DateTime(timestamp: i64) DateTime {
     const DAYS_ON_1970_01_01 = 719468;
 
     var dayN: u64 = DAYS_ON_1970_01_01 + unixtime / SECONDS_PER_DAY;
-    var seconds_since_midnight: u64 = unixtime % SECONDS_PER_DAY;
+    const seconds_since_midnight: u64 = unixtime % SECONDS_PER_DAY;
     var temp: u64 = 0;
 
     temp = 4 * (dayN + DAYS_IN_100_YEARS + 1) / DAYS_IN_400_YEARS - 1;
-    var year = @intCast(u16, 100 * temp);
+    var year: u16 = @intCast(100 * temp);
     dayN -= DAYS_IN_100_YEARS * temp + temp / 4;
 
     temp = 4 * (dayN + DAYS_IN_COMMON_YEAR + 1) / DAYS_IN_4_YEARS - 1;
-    year += @intCast(u16, temp);
+    year += @intCast(temp);
     dayN -= DAYS_IN_COMMON_YEAR * temp + temp / 4;
 
-    var month = @intCast(u8, (5 * dayN + 2) / 153);
-    var day = @intCast(u8, dayN - (@intCast(u64, month) * 153 + 2) / 5 + 1);
+    var month: u8 = @intCast((5 * dayN + 2) / 153);
+    const day: u8 = @intCast(dayN - (@as(u64, month) * 153 + 2) / 5 + 1);
 
     month += 3;
     if (month > 12) {
         month -= 12;
         year += 1;
     }
 
-    var hour = @intCast(u8, seconds_since_midnight / 3600);
-    var minute = @intCast(u8, seconds_since_midnight % 3600 / 60);
-    var second = @intCast(u8, seconds_since_midnight % 60);
+    const hour: u8 = @intCast(seconds_since_midnight / 3600);
+    const minute: u8 = @intCast(seconds_since_midnight % 3600 / 60);
+    const second: u8 = @intCast(seconds_since_midnight % 60);
 
     return DateTime{ .day = day, .month = month, .year = year, .hour = hour, .minute = minute, .second = second };
 }
@@ -47,35 +47,47 @@ fn dtToString(dt: DateTime, buf: []u8) []const u8 {
     return std.fmt.bufPrint(buf, "Compiled at {:0>4}-{:0>2}-{:0>2}-{:0>2}:{:0>2}", .{ dt.year, dt.month, dt.day, dt.hour, dt.minute }) catch unreachable;
 }
 
-pub fn build(b: *std.build.Builder) void {
+pub fn build(b: *std.Build) void {
     // Standard target options allows the person running `zig build` to choose
     // what target to build for. Here we do not override the defaults, which
     // means any target is allowed, and the default is native. Other options
     // for restricting supported target set are available.
     const target = b.standardTargetOptions(.{});
     const targetName = b.option([]const u8, "target-name", "Change the out name of the binary") orelse "Avalanche";
 
+    const net_module = b.createModule(
+        .{
+            .root_source_file = b.path("nets/bingshan.nnue"),
+        },
+    );
     // Standard release options allow the person running `zig build` to select
     // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
-    const mode = b.standardReleaseOptions();
-
-    const exe = b.addExecutable(targetName, "src/main.zig");
-    exe.setTarget(target);
-    exe.setBuildMode(mode);
+    const optimize = b.standardOptimizeOption(.{});
+    const omit_frame_ptr = switch (optimize) {
+        .ReleaseFast, .ReleaseSmall => true,
+        .Debug, .ReleaseSafe => false,
+    };
+    const exe = b.addExecutable(.{
+        .name = targetName,
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+        .omit_frame_pointer = omit_frame_ptr,
+    });
+
+    exe.root_module.addImport("net", net_module);
 
     const build_options = b.addOptions();
-    exe.addOptions("build_options", build_options);
+    exe.root_module.addOptions("build_options", build_options);
+    b.installArtifact(exe);
 
     var buf: [64]u8 = undefined;
     build_options.addOption([]const u8, "version", dtToString(timestamp2DateTime(std.time.timestamp()), &buf));
     // build_options.addOption([]const u8, "version", "2.2.0");
 
-    exe.use_stage1 = true;
-
     exe.linkLibC();
-    exe.install();
 
-    const run_cmd = exe.run();
+    const run_cmd = b.addRunArtifact(exe);
     run_cmd.step.dependOn(b.getInstallStep());
     if (b.args) |args| {
         run_cmd.addArgs(args);
@@ -84,9 +96,11 @@ pub fn build(b: *std.build.Builder) void {
     const run_step = b.step("run", "Run the app");
     run_step.dependOn(&run_cmd.step);
 
-    const exe_tests = b.addTest("src/tests.zig");
-    exe_tests.setTarget(target);
-    exe_tests.setBuildMode(mode);
+    const exe_tests = b.addTest(.{
+        .root_source_file = b.path("src/tests.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
 
     const test_step = b.step("test", "Run unit tests");
     test_step.dependOn(&exe_tests.step);

src/chess/perft.zig

@@ -10,14 +10,14 @@ pub fn perft(comptime color: types.Color, pos: *position.Position, depth: u32) u
     }
 
     var nodes: usize = 0;
-    comptime var opp = if (color == types.Color.White) types.Color.Black else types.Color.White;
+    const opp = comptime if (color == types.Color.White) types.Color.Black else types.Color.White;
 
     var list = std.ArrayList(types.Move).initCapacity(std.heap.c_allocator, 48) catch unreachable;
     defer list.deinit();
 
     pos.generate_legal_moves(color, &list);
     if (depth == 1) {
-        return @intCast(usize, list.items.len);
+        return @intCast(list.items.len);
     }
 
     for (list.items) |move| {
@@ -32,7 +32,7 @@ pub fn perft(comptime color: types.Color, pos: *position.Position, depth: u32) u
 pub fn perft_div(comptime color: types.Color, pos: *position.Position, depth: u32) void {
     var nodes: usize = 0;
     var branch: usize = 0;
-    comptime var opp = if (color == types.Color.White) types.Color.Black else types.Color.White;
+    const opp = comptime if (color == types.Color.White) types.Color.Black else types.Color.White;
 
     var list = std.ArrayList(types.Move).initCapacity(std.heap.c_allocator, 48) catch unreachable;
     defer list.deinit();
@@ -66,11 +66,11 @@ pub fn perft_test(pos: *position.Position, depth: u32) void {
         nodes = perft(types.Color.Black, pos, depth);
     }
 
-    var elapsed = timer.read();
+    const elapsed = timer.read();
     std.debug.print("\n", .{});
     std.debug.print("Nodes: {}\n", .{nodes});
-    var mcs = @intToFloat(f64, elapsed) / 1000.0;
+    const mcs = @as(f64, @floatFromInt(elapsed)) / 1000.0;
     std.debug.print("Elapsed: {d:.2} microseconds (or {d:.6} seconds)\n", .{ mcs, mcs / 1000.0 / 1000.0 });
-    var nps = @intToFloat(f64, nodes) / (@intToFloat(f64, elapsed) / 1000.0 / 1000.0 / 1000.0);
+    const nps = @as(f64, @floatFromInt(nodes)) / (@as(f64, @floatFromInt(elapsed)) / 1000.0 / 1000.0 / 1000.0);
     std.debug.print("NPS: {d:.2} nodes/s (or {d:.4} mn/s)\n", .{ nps, nps / 1000.0 / 1000.0 });
 }