Commit ee47094a33
Changed files (4)
test
standalone
test/standalone/build.zig
@@ -31,6 +31,8 @@ pub fn build(b: *std.Build) void {
const tools_target = b.resolveTargetQuery(.{});
for ([_][]const u8{
// Alphabetically sorted. No need to build `tools/spirv/grammar.zig`.
+ "../../tools/fetch_them_macos_headers.zig",
+ "../../tools/gen_macos_headers_c.zig",
"../../tools/gen_outline_atomics.zig",
"../../tools/gen_spirv_spec.zig",
"../../tools/gen_stubs.zig",
tools/fetch_them_macos_headers.zig
@@ -0,0 +1,738 @@
+const std = @import("std");
+const fs = std.fs;
+const io = std.io;
+const mem = std.mem;
+const process = std.process;
+const assert = std.debug.assert;
+const tmpDir = std.testing.tmpDir;
+
+const Allocator = mem.Allocator;
+const Blake3 = std.crypto.hash.Blake3;
+const OsTag = std.Target.Os.Tag;
+
+var general_purpose_allocator = std.heap.GeneralPurposeAllocator(.{}){};
+const gpa = general_purpose_allocator.allocator();
+
+const Arch = enum {
+ any,
+ aarch64,
+ x86_64,
+};
+
+const Abi = enum { any, none };
+
+const OsVer = enum(u32) {
+ any = 0,
+ catalina = 10,
+ big_sur = 11,
+ monterey = 12,
+ ventura = 13,
+ sonoma = 14,
+ sequoia = 15,
+};
+
+const Target = struct {
+ arch: Arch,
+ os: OsTag = .macos,
+ os_ver: OsVer,
+ abi: Abi = .none,
+
+ fn hash(a: Target) u32 {
+ var hasher = std.hash.Wyhash.init(0);
+ std.hash.autoHash(&hasher, a.arch);
+ std.hash.autoHash(&hasher, a.os);
+ std.hash.autoHash(&hasher, a.os_ver);
+ std.hash.autoHash(&hasher, a.abi);
+ return @as(u32, @truncate(hasher.final()));
+ }
+
+ fn eql(a: Target, b: Target) bool {
+ return a.arch == b.arch and
+ a.os == b.os and
+ a.os_ver == b.os_ver and
+ a.abi == b.abi;
+ }
+
+ fn name(self: Target, allocator: Allocator) ![]const u8 {
+ return std.fmt.allocPrint(allocator, "{s}-{s}-{s}", .{
+ @tagName(self.arch),
+ @tagName(self.os),
+ @tagName(self.abi),
+ });
+ }
+
+ fn fullName(self: Target, allocator: Allocator) ![]const u8 {
+ if (self.os_ver == .any) return self.name(allocator);
+ return std.fmt.allocPrint(allocator, "{s}-{s}.{d}-{s}", .{
+ @tagName(self.arch),
+ @tagName(self.os),
+ @intFromEnum(self.os_ver),
+ @tagName(self.abi),
+ });
+ }
+};
+
+const targets = [_]Target{
+ Target{
+ .arch = .any,
+ .abi = .any,
+ .os_ver = .any,
+ },
+ Target{
+ .arch = .aarch64,
+ .os_ver = .any,
+ },
+ Target{
+ .arch = .x86_64,
+ .os_ver = .any,
+ },
+ Target{
+ .arch = .x86_64,
+ .os_ver = .catalina,
+ },
+ Target{
+ .arch = .x86_64,
+ .os_ver = .big_sur,
+ },
+ Target{
+ .arch = .x86_64,
+ .os_ver = .monterey,
+ },
+ Target{
+ .arch = .x86_64,
+ .os_ver = .ventura,
+ },
+ Target{
+ .arch = .x86_64,
+ .os_ver = .sonoma,
+ },
+ Target{
+ .arch = .x86_64,
+ .os_ver = .sequoia,
+ },
+ Target{
+ .arch = .aarch64,
+ .os_ver = .big_sur,
+ },
+ Target{
+ .arch = .aarch64,
+ .os_ver = .monterey,
+ },
+ Target{
+ .arch = .aarch64,
+ .os_ver = .ventura,
+ },
+ Target{
+ .arch = .aarch64,
+ .os_ver = .sonoma,
+ },
+ Target{
+ .arch = .aarch64,
+ .os_ver = .sequoia,
+ },
+};
+
+const headers_source_prefix: []const u8 = "headers";
+
+const Contents = struct {
+ bytes: []const u8,
+ hit_count: usize,
+ hash: []const u8,
+ is_generic: bool,
+
+ fn hitCountLessThan(context: void, lhs: *const Contents, rhs: *const Contents) bool {
+ _ = context;
+ return lhs.hit_count < rhs.hit_count;
+ }
+};
+
+const TargetToHashContext = struct {
+ pub fn hash(self: @This(), target: Target) u32 {
+ _ = self;
+ return target.hash();
+ }
+ pub fn eql(self: @This(), a: Target, b: Target, b_index: usize) bool {
+ _ = self;
+ _ = b_index;
+ return a.eql(b);
+ }
+};
+const TargetToHash = std.ArrayHashMap(Target, []const u8, TargetToHashContext, true);
+
+const HashToContents = std.StringHashMap(Contents);
+const PathTable = std.StringHashMap(*TargetToHash);
+
+/// The don't-dedup-list contains file paths with known problematic headers
+/// which while contain the same contents between architectures, should not be
+/// deduped since they contain includes, etc. which are relative and thus cannot be separated
+/// into a shared include dir such as `any-macos-any`.
+const dont_dedup_list = &[_][]const u8{
+ "libkern/OSAtomic.h",
+ "libkern/OSAtomicDeprecated.h",
+ "libkern/OSSpinLockDeprecated.h",
+ "libkern/OSAtomicQueue.h",
+};
+
+fn generateDontDedupMap(arena: Allocator) !std.StringHashMap(void) {
+ var map = std.StringHashMap(void).init(arena);
+ try map.ensureTotalCapacity(dont_dedup_list.len);
+ for (dont_dedup_list) |path| {
+ map.putAssumeCapacityNoClobber(path, {});
+ }
+ return map;
+}
+
+const usage =
+ \\fetch_them_macos_headers fetch
+ \\fetch_them_macos_headers dedup
+ \\
+ \\Commands:
+ \\ fetch Fetch libc headers into headers/<arch>-macos.<os_ver> dir
+ \\ dedup Generate deduplicated dirs into a given <destination> path
+ \\
+ \\General Options:
+ \\-h, --help Print this help and exit
+;
+
+pub fn main() anyerror!void {
+ var arena = std.heap.ArenaAllocator.init(gpa);
+ defer arena.deinit();
+
+ const all_args = try std.process.argsAlloc(arena.allocator());
+ const args = all_args[1..];
+ if (args.len == 0) fatal("no command or option specified", .{});
+
+ const cmd = args[0];
+ if (mem.eql(u8, cmd, "--help") or mem.eql(u8, cmd, "-h")) {
+ return info(usage, .{});
+ } else if (mem.eql(u8, cmd, "dedup")) {
+ return dedup(arena.allocator(), args[1..]);
+ } else if (mem.eql(u8, cmd, "fetch")) {
+ return fetch(arena.allocator(), args[1..]);
+ } else fatal("unknown command or option: {s}", .{cmd});
+}
+
+const ArgsIterator = struct {
+ args: []const []const u8,
+ i: usize = 0,
+
+ fn next(it: *@This()) ?[]const u8 {
+ if (it.i >= it.args.len) {
+ return null;
+ }
+ defer it.i += 1;
+ return it.args[it.i];
+ }
+
+ fn nextOrFatal(it: *@This()) []const u8 {
+ const arg = it.next() orelse fatal("expected parameter after '{s}'", .{it.args[it.i - 1]});
+ return arg;
+ }
+};
+
+fn info(comptime format: []const u8, args: anytype) void {
+ const msg = std.fmt.allocPrint(gpa, "info: " ++ format ++ "\n", args) catch return;
+ std.io.getStdOut().writeAll(msg) catch {};
+}
+
+fn fatal(comptime format: []const u8, args: anytype) noreturn {
+ ret: {
+ const msg = std.fmt.allocPrint(gpa, "fatal: " ++ format ++ "\n", args) catch break :ret;
+ std.io.getStdErr().writeAll(msg) catch {};
+ }
+ std.process.exit(1);
+}
+
+const fetch_usage =
+ \\fetch_them_macos_headers fetch
+ \\
+ \\Options:
+ \\ --sysroot Path to macOS SDK
+ \\
+ \\General Options:
+ \\-h, --help Print this help and exit
+;
+
+fn fetch(arena: Allocator, args: []const []const u8) !void {
+ var argv = std.ArrayList([]const u8).init(arena);
+ var sysroot: ?[]const u8 = null;
+
+ var args_iter = ArgsIterator{ .args = args };
+ while (args_iter.next()) |arg| {
+ if (mem.eql(u8, arg, "--help") or mem.eql(u8, arg, "-h")) {
+ return info(fetch_usage, .{});
+ } else if (mem.eql(u8, arg, "--sysroot")) {
+ sysroot = args_iter.nextOrFatal();
+ } else try argv.append(arg);
+ }
+
+ const sysroot_path = sysroot orelse blk: {
+ const target = try std.zig.system.resolveTargetQuery(.{});
+ break :blk std.zig.system.darwin.getSdk(arena, target) orelse
+ fatal("no SDK found; you can provide one explicitly with '--sysroot' flag", .{});
+ };
+
+ var sdk_dir = try std.fs.cwd().openDir(sysroot_path, .{});
+ defer sdk_dir.close();
+ const sdk_info = try sdk_dir.readFileAlloc(arena, "SDKSettings.json", std.math.maxInt(u32));
+
+ const parsed_json = try std.json.parseFromSlice(struct {
+ DefaultProperties: struct { MACOSX_DEPLOYMENT_TARGET: []const u8 },
+ }, arena, sdk_info, .{ .ignore_unknown_fields = true });
+
+ const version = Version.parse(parsed_json.value.DefaultProperties.MACOSX_DEPLOYMENT_TARGET) orelse
+ fatal("don't know how to parse SDK version: {s}", .{
+ parsed_json.value.DefaultProperties.MACOSX_DEPLOYMENT_TARGET,
+ });
+ const os_ver: OsVer = switch (version.major) {
+ 10 => .catalina,
+ 11 => .big_sur,
+ 12 => .monterey,
+ 13 => .ventura,
+ 14 => .sonoma,
+ 15 => .sequoia,
+ else => unreachable,
+ };
+ info("found SDK deployment target macOS {} aka '{s}'", .{ version, @tagName(os_ver) });
+
+ var tmp = tmpDir(.{});
+ defer tmp.cleanup();
+
+ for (&[_]Arch{ .aarch64, .x86_64 }) |arch| {
+ const target: Target = .{
+ .arch = arch,
+ .os_ver = os_ver,
+ };
+ try fetchTarget(arena, argv.items, sysroot_path, target, version, tmp);
+ }
+}
+
+fn fetchTarget(
+ arena: Allocator,
+ args: []const []const u8,
+ sysroot: []const u8,
+ target: Target,
+ ver: Version,
+ tmp: std.testing.TmpDir,
+) !void {
+ const tmp_filename = "headers";
+ const headers_list_filename = "headers.o.d";
+ const tmp_path = try tmp.dir.realpathAlloc(arena, ".");
+ const tmp_file_path = try fs.path.join(arena, &[_][]const u8{ tmp_path, tmp_filename });
+ const headers_list_path = try fs.path.join(arena, &[_][]const u8{ tmp_path, headers_list_filename });
+
+ const macos_version = try std.fmt.allocPrint(arena, "-mmacosx-version-min={d}.{d}", .{
+ ver.major,
+ ver.minor,
+ });
+
+ var cc_argv = std.ArrayList([]const u8).init(arena);
+ try cc_argv.appendSlice(&[_][]const u8{
+ "cc",
+ "-arch",
+ switch (target.arch) {
+ .x86_64 => "x86_64",
+ .aarch64 => "arm64",
+ else => unreachable,
+ },
+ macos_version,
+ "-isysroot",
+ sysroot,
+ "-iwithsysroot",
+ "/usr/include",
+ "-o",
+ tmp_file_path,
+ "macos-headers.c",
+ "-MD",
+ "-MV",
+ "-MF",
+ headers_list_path,
+ });
+ try cc_argv.appendSlice(args);
+
+ // TODO instead of calling `cc` as a child process here,
+ // hook in directly to `zig cc` API.
+ const res = try std.process.Child.run(.{
+ .allocator = arena,
+ .argv = cc_argv.items,
+ });
+
+ if (res.stderr.len != 0) {
+ std.log.err("{s}", .{res.stderr});
+ }
+
+ // Read in the contents of `upgrade.o.d`
+ const headers_list_file = try tmp.dir.openFile(headers_list_filename, .{});
+ defer headers_list_file.close();
+
+ var headers_dir = fs.cwd().openDir(headers_source_prefix, .{}) catch |err| switch (err) {
+ error.FileNotFound,
+ error.NotDir,
+ => fatal("path '{s}' not found or not a directory. Did you accidentally delete it?", .{
+ headers_source_prefix,
+ }),
+ else => return err,
+ };
+ defer headers_dir.close();
+
+ const dest_path = try target.fullName(arena);
+ try headers_dir.deleteTree(dest_path);
+
+ var dest_dir = try headers_dir.makeOpenPath(dest_path, .{});
+ var dirs = std.StringHashMap(fs.Dir).init(arena);
+ try dirs.putNoClobber(".", dest_dir);
+
+ const headers_list_str = try headers_list_file.reader().readAllAlloc(arena, std.math.maxInt(usize));
+ const prefix = "/usr/include";
+
+ var it = mem.splitScalar(u8, headers_list_str, '\n');
+ while (it.next()) |line| {
+ if (mem.lastIndexOf(u8, line, "clang") != null) continue;
+ if (mem.lastIndexOf(u8, line, prefix[0..])) |idx| {
+ const out_rel_path = line[idx + prefix.len + 1 ..];
+ const out_rel_path_stripped = mem.trim(u8, out_rel_path, " \\");
+ const dirname = fs.path.dirname(out_rel_path_stripped) orelse ".";
+ const maybe_dir = try dirs.getOrPut(dirname);
+ if (!maybe_dir.found_existing) {
+ maybe_dir.value_ptr.* = try dest_dir.makeOpenPath(dirname, .{});
+ }
+ const basename = fs.path.basename(out_rel_path_stripped);
+
+ const line_stripped = mem.trim(u8, line, " \\");
+ const abs_dirname = fs.path.dirname(line_stripped).?;
+ var orig_subdir = try fs.cwd().openDir(abs_dirname, .{});
+ defer orig_subdir.close();
+
+ try orig_subdir.copyFile(basename, maybe_dir.value_ptr.*, basename, .{});
+ }
+ }
+
+ var dir_it = dirs.iterator();
+ while (dir_it.next()) |entry| {
+ entry.value_ptr.close();
+ }
+}
+
+const dedup_usage =
+ \\fetch_them_macos_headers dedup [path]
+ \\
+ \\General Options:
+ \\-h, --help Print this help and exit
+;
+
+/// Dedups libs headers assuming the following layered structure:
+/// layer 1: x86_64-macos.10 x86_64-macos.11 x86_64-macos.12 aarch64-macos.11 aarch64-macos.12
+/// layer 2: any-macos.10 any-macos.11 any-macos.12
+/// layer 3: any-macos
+///
+/// The first layer consists of headers specific to a CPU architecture AND macOS version. The second
+/// layer consists of headers common to a macOS version across CPU architectures, and the final
+/// layer consists of headers common to all libc headers.
+fn dedup(arena: Allocator, args: []const []const u8) !void {
+ var path: ?[]const u8 = null;
+ var args_iter = ArgsIterator{ .args = args };
+ while (args_iter.next()) |arg| {
+ if (mem.eql(u8, arg, "--help") or mem.eql(u8, arg, "-h")) {
+ return info(dedup_usage, .{});
+ } else {
+ if (path != null) fatal("too many arguments", .{});
+ path = arg;
+ }
+ }
+
+ const dest_path = path orelse fatal("no destination path specified", .{});
+ var dest_dir = fs.cwd().makeOpenPath(dest_path, .{}) catch |err| switch (err) {
+ error.NotDir => fatal("path '{s}' not a directory", .{dest_path}),
+ else => return err,
+ };
+ defer dest_dir.close();
+
+ var dont_dedup_map = try generateDontDedupMap(arena);
+ var layer_2_targets = std.ArrayList(TargetWithPrefix).init(arena);
+
+ for (&[_]OsVer{ .catalina, .big_sur, .monterey, .ventura, .sonoma, .sequoia }) |os_ver| {
+ var layer_1_targets = std.ArrayList(TargetWithPrefix).init(arena);
+
+ for (targets) |target| {
+ if (target.os_ver != os_ver) continue;
+ try layer_1_targets.append(.{
+ .prefix = headers_source_prefix,
+ .target = target,
+ });
+ }
+
+ if (layer_1_targets.items.len < 2) {
+ try layer_2_targets.appendSlice(layer_1_targets.items);
+ continue;
+ }
+
+ const layer_2_target = try dedupDirs(arena, .{
+ .os_ver = os_ver,
+ .dest_path = dest_path,
+ .dest_dir = dest_dir,
+ .targets = layer_1_targets.items,
+ .dont_dedup_map = &dont_dedup_map,
+ });
+ try layer_2_targets.append(layer_2_target);
+ }
+
+ const layer_3_target = try dedupDirs(arena, .{
+ .os_ver = .any,
+ .dest_path = dest_path,
+ .dest_dir = dest_dir,
+ .targets = layer_2_targets.items,
+ .dont_dedup_map = &dont_dedup_map,
+ });
+ assert(layer_3_target.target.eql(targets[0]));
+}
+
+const TargetWithPrefix = struct {
+ prefix: []const u8,
+ target: Target,
+};
+
+const DedupDirsArgs = struct {
+ os_ver: OsVer,
+ dest_path: []const u8,
+ dest_dir: fs.Dir,
+ targets: []const TargetWithPrefix,
+ dont_dedup_map: *const std.StringHashMap(void),
+};
+
+fn dedupDirs(arena: Allocator, args: DedupDirsArgs) !TargetWithPrefix {
+ var tmp = tmpDir(.{ .iterate = true });
+ defer tmp.cleanup();
+
+ var path_table = PathTable.init(arena);
+ var hash_to_contents = HashToContents.init(arena);
+
+ var savings = FindResult{};
+ for (args.targets) |target| {
+ const res = try findDuplicates(target.target, arena, target.prefix, &path_table, &hash_to_contents);
+ savings.max_bytes_saved += res.max_bytes_saved;
+ savings.total_bytes += res.total_bytes;
+ }
+
+ info("summary: {} could be reduced to {}", .{
+ std.fmt.fmtIntSizeBin(savings.total_bytes),
+ std.fmt.fmtIntSizeBin(savings.total_bytes - savings.max_bytes_saved),
+ });
+
+ const output_target = Target{
+ .arch = .any,
+ .abi = .any,
+ .os_ver = args.os_ver,
+ };
+ const common_name = try output_target.fullName(arena);
+
+ var missed_opportunity_bytes: usize = 0;
+ // Iterate path_table. For each path, put all the hashes into a list. Sort by hit_count.
+ // The hash with the highest hit_count gets to be the "generic" one. Everybody else
+ // gets their header in a separate arch directory.
+ var path_it = path_table.iterator();
+ while (path_it.next()) |path_kv| {
+ if (!args.dont_dedup_map.contains(path_kv.key_ptr.*)) {
+ var contents_list = std.ArrayList(*Contents).init(arena);
+ {
+ var hash_it = path_kv.value_ptr.*.iterator();
+ while (hash_it.next()) |hash_kv| {
+ const contents = &hash_to_contents.getEntry(hash_kv.value_ptr.*).?.value_ptr.*;
+ try contents_list.append(contents);
+ }
+ }
+ std.mem.sort(*Contents, contents_list.items, {}, Contents.hitCountLessThan);
+ const best_contents = contents_list.popOrNull().?;
+ if (best_contents.hit_count > 1) {
+ // Put it in `any-macos-none`.
+ const full_path = try fs.path.join(arena, &[_][]const u8{ common_name, path_kv.key_ptr.* });
+ try tmp.dir.makePath(fs.path.dirname(full_path).?);
+ try tmp.dir.writeFile(.{ .sub_path = full_path, .data = best_contents.bytes });
+ best_contents.is_generic = true;
+ while (contents_list.popOrNull()) |contender| {
+ if (contender.hit_count > 1) {
+ const this_missed_bytes = contender.hit_count * contender.bytes.len;
+ missed_opportunity_bytes += this_missed_bytes;
+ info("Missed opportunity ({}): {s}", .{
+ std.fmt.fmtIntSizeBin(this_missed_bytes),
+ path_kv.key_ptr.*,
+ });
+ } else break;
+ }
+ }
+ }
+ var hash_it = path_kv.value_ptr.*.iterator();
+ while (hash_it.next()) |hash_kv| {
+ const contents = &hash_to_contents.getEntry(hash_kv.value_ptr.*).?.value_ptr.*;
+ if (contents.is_generic) continue;
+
+ const target = hash_kv.key_ptr.*;
+ const target_name = try target.fullName(arena);
+ const full_path = try fs.path.join(arena, &[_][]const u8{ target_name, path_kv.key_ptr.* });
+ try tmp.dir.makePath(fs.path.dirname(full_path).?);
+ try tmp.dir.writeFile(.{ .sub_path = full_path, .data = contents.bytes });
+ }
+ }
+
+ for (args.targets) |target| {
+ const target_name = try target.target.fullName(arena);
+ try args.dest_dir.deleteTree(target_name);
+ }
+ try args.dest_dir.deleteTree(common_name);
+
+ var tmp_it = tmp.dir.iterate();
+ while (try tmp_it.next()) |entry| {
+ switch (entry.kind) {
+ .directory => {
+ const sub_dir = try tmp.dir.openDir(entry.name, .{ .iterate = true });
+ const dest_sub_dir = try args.dest_dir.makeOpenPath(entry.name, .{});
+ try copyDirAll(sub_dir, dest_sub_dir);
+ },
+ else => info("unexpected file format: not a directory: '{s}'", .{entry.name}),
+ }
+ }
+
+ return TargetWithPrefix{
+ .prefix = args.dest_path,
+ .target = output_target,
+ };
+}
+
+const FindResult = struct {
+ max_bytes_saved: usize = 0,
+ total_bytes: usize = 0,
+};
+
+fn findDuplicates(
+ target: Target,
+ arena: Allocator,
+ dest_path: []const u8,
+ path_table: *PathTable,
+ hash_to_contents: *HashToContents,
+) !FindResult {
+ var result = FindResult{};
+
+ const target_name = try target.fullName(arena);
+ const target_include_dir = try fs.path.join(arena, &[_][]const u8{ dest_path, target_name });
+ var dir_stack = std.ArrayList([]const u8).init(arena);
+ try dir_stack.append(target_include_dir);
+
+ while (dir_stack.popOrNull()) |full_dir_name| {
+ var dir = fs.cwd().openDir(full_dir_name, .{ .iterate = true }) catch |err| switch (err) {
+ error.FileNotFound => break,
+ error.AccessDenied => break,
+ else => return err,
+ };
+ defer dir.close();
+
+ var dir_it = dir.iterate();
+
+ while (try dir_it.next()) |entry| {
+ const full_path = try fs.path.join(arena, &[_][]const u8{ full_dir_name, entry.name });
+ switch (entry.kind) {
+ .directory => try dir_stack.append(full_path),
+ .file => {
+ const rel_path = try fs.path.relative(arena, target_include_dir, full_path);
+ const max_size = 2 * 1024 * 1024 * 1024;
+ const raw_bytes = try fs.cwd().readFileAlloc(arena, full_path, max_size);
+ const trimmed = mem.trim(u8, raw_bytes, " \r\n\t");
+ result.total_bytes += raw_bytes.len;
+ const hash = try arena.alloc(u8, 32);
+ var hasher = Blake3.init(.{});
+ hasher.update(rel_path);
+ hasher.update(trimmed);
+ hasher.final(hash);
+ const gop = try hash_to_contents.getOrPut(hash);
+ if (gop.found_existing) {
+ result.max_bytes_saved += raw_bytes.len;
+ gop.value_ptr.hit_count += 1;
+ info("duplicate: {s} {s} ({})", .{
+ target_name,
+ rel_path,
+ std.fmt.fmtIntSizeBin(raw_bytes.len),
+ });
+ } else {
+ gop.value_ptr.* = Contents{
+ .bytes = trimmed,
+ .hit_count = 1,
+ .hash = hash,
+ .is_generic = false,
+ };
+ }
+ const path_gop = try path_table.getOrPut(rel_path);
+ const target_to_hash = if (path_gop.found_existing) path_gop.value_ptr.* else blk: {
+ const ptr = try arena.create(TargetToHash);
+ ptr.* = TargetToHash.init(arena);
+ path_gop.value_ptr.* = ptr;
+ break :blk ptr;
+ };
+ try target_to_hash.putNoClobber(target, hash);
+ },
+ else => info("unexpected file: {s}", .{full_path}),
+ }
+ }
+ }
+
+ return result;
+}
+
+fn copyDirAll(source: fs.Dir, dest: fs.Dir) anyerror!void {
+ var it = source.iterate();
+ while (try it.next()) |next| {
+ switch (next.kind) {
+ .directory => {
+ var sub_dir = try dest.makeOpenPath(next.name, .{});
+ var sub_source = try source.openDir(next.name, .{ .iterate = true });
+ defer {
+ sub_dir.close();
+ sub_source.close();
+ }
+ try copyDirAll(sub_source, sub_dir);
+ },
+ .file => {
+ var source_file = try source.openFile(next.name, .{});
+ var dest_file = try dest.createFile(next.name, .{});
+ defer {
+ source_file.close();
+ dest_file.close();
+ }
+ const stat = try source_file.stat();
+ const ncopied = try source_file.copyRangeAll(0, dest_file, 0, stat.size);
+ assert(ncopied == stat.size);
+ },
+ else => |kind| info("unexpected file kind '{s}' will be ignored", .{@tagName(kind)}),
+ }
+ }
+}
+
+const Version = struct {
+ major: u16,
+ minor: u8,
+ patch: u8,
+
+ fn parse(raw: []const u8) ?Version {
+ var parsed: [3]u16 = [_]u16{0} ** 3;
+ var count: usize = 0;
+ var it = std.mem.splitAny(u8, raw, ".");
+ while (it.next()) |comp| {
+ if (count >= 3) return null;
+ parsed[count] = std.fmt.parseInt(u16, comp, 10) catch return null;
+ count += 1;
+ }
+ if (count == 0) return null;
+ const major = parsed[0];
+ const minor = std.math.cast(u8, parsed[1]) orelse return null;
+ const patch = std.math.cast(u8, parsed[2]) orelse return null;
+ return .{ .major = major, .minor = minor, .patch = patch };
+ }
+
+ pub fn format(
+ v: Version,
+ comptime unused_fmt_string: []const u8,
+ options: std.fmt.FormatOptions,
+ writer: anytype,
+ ) !void {
+ _ = unused_fmt_string;
+ _ = options;
+ try writer.print("{d}.{d}.{d}", .{ v.major, v.minor, v.patch });
+ }
+};
tools/gen_macos_headers_c.zig
@@ -0,0 +1,97 @@
+const std = @import("std");
+const assert = std.debug.assert;
+
+const Allocator = std.mem.Allocator;
+
+var general_purpose_allocator = std.heap.GeneralPurposeAllocator(.{}){};
+const gpa = general_purpose_allocator.allocator();
+
+const usage =
+ \\gen_macos_headers_c [dir]
+ \\
+ \\General Options:
+ \\-h, --help Print this help and exit
+;
+
+fn info(comptime format: []const u8, args: anytype) void {
+ const msg = std.fmt.allocPrint(gpa, "info: " ++ format ++ "\n", args) catch return;
+ std.io.getStdOut().writeAll(msg) catch {};
+}
+
+fn fatal(comptime format: []const u8, args: anytype) noreturn {
+ ret: {
+ const msg = std.fmt.allocPrint(gpa, "fatal: " ++ format ++ "\n", args) catch break :ret;
+ std.io.getStdErr().writeAll(msg) catch {};
+ }
+ std.process.exit(1);
+}
+
+pub fn main() anyerror!void {
+ var arena_allocator = std.heap.ArenaAllocator.init(gpa);
+ defer arena_allocator.deinit();
+ const arena = arena_allocator.allocator();
+
+ const args = try std.process.argsAlloc(arena);
+ if (args.len == 1) fatal("no command or option specified", .{});
+
+ var positionals = std.ArrayList([]const u8).init(arena);
+
+ for (args[1..]) |arg| {
+ if (std.mem.eql(u8, arg, "--help") or std.mem.eql(u8, arg, "-h")) {
+ return info(usage, .{});
+ } else try positionals.append(arg);
+ }
+
+ if (positionals.items.len != 1) fatal("expected one positional argument: [dir]", .{});
+
+ var dir = try std.fs.cwd().openDir(positionals.items[0], .{ .no_follow = true });
+ defer dir.close();
+ var paths = std.ArrayList([]const u8).init(arena);
+ try findHeaders(arena, dir, "", &paths);
+
+ const SortFn = struct {
+ pub fn lessThan(ctx: void, lhs: []const u8, rhs: []const u8) bool {
+ _ = ctx;
+ return std.mem.lessThan(u8, lhs, rhs);
+ }
+ };
+
+ std.mem.sort([]const u8, paths.items, {}, SortFn.lessThan);
+
+ const stdout = std.io.getStdOut().writer();
+ try stdout.writeAll("#define _XOPEN_SOURCE\n");
+ for (paths.items) |path| {
+ try stdout.print("#include <{s}>\n", .{path});
+ }
+ try stdout.writeAll(
+ \\int main(int argc, char **argv) {
+ \\ return 0;
+ \\}
+ );
+}
+
+fn findHeaders(
+ arena: Allocator,
+ dir: std.fs.Dir,
+ prefix: []const u8,
+ paths: *std.ArrayList([]const u8),
+) anyerror!void {
+ var it = dir.iterate();
+ while (try it.next()) |entry| {
+ switch (entry.kind) {
+ .directory => {
+ const path = try std.fs.path.join(arena, &.{ prefix, entry.name });
+ var subdir = try dir.openDir(entry.name, .{ .no_follow = true });
+ defer subdir.close();
+ try findHeaders(arena, subdir, path, paths);
+ },
+ .file, .sym_link => {
+ const ext = std.fs.path.extension(entry.name);
+ if (!std.mem.eql(u8, ext, ".h")) continue;
+ const path = try std.fs.path.join(arena, &.{ prefix, entry.name });
+ try paths.append(path);
+ },
+ else => {},
+ }
+ }
+}
tools/macos-headers.c
@@ -0,0 +1,207 @@
+// Source: https://en.wikipedia.org/wiki/C_standard_library#Header_files
+#include <assert.h>
+#include <complex.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fenv.h>
+#include <float.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <iso646.h>
+#include <limits.h>
+#include <locale.h>
+#include <math.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <stdalign.h>
+#include <stdarg.h>
+#include <stdatomic.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdnoreturn.h>
+#include <string.h>
+#include <tgmath.h>
+#include <time.h>
+#include <wchar.h>
+#include <wctype.h>
+
+// Source: https://en.wikipedia.org/wiki/C_standard_library#BSD_libc
+#include <fts.h>
+#include <db.h>
+#include <err.h>
+#include <vis.h>
+
+// Source: https://en.wikipedia.org/wiki/C_POSIX_library
+#include <aio.h>
+#include <arpa/inet.h>
+#include <assert.h>
+#include <complex.h>
+#include <cpio.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fenv.h>
+#include <float.h>
+#include <fmtmsg.h>
+#include <fnmatch.h>
+#include <ftw.h>
+#include <glob.h>
+#include <grp.h>
+#include <iconv.h>
+#include <inttypes.h>
+#include <iso646.h>
+#include <langinfo.h>
+#include <libgen.h>
+#include <limits.h>
+#include <locale.h>
+#include <math.h>
+#include <monetary.h>
+/* #include <mqueue.h> - not found on macos catalina */
+#include <ndbm.h>
+#include <net/if.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
+#include <nl_types.h>
+#include <poll.h>
+#include <pthread.h>
+#include <pwd.h>
+#include <regex.h>
+#include <sched.h>
+#include <search.h>
+#include <semaphore.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <spawn.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+/* #include <stropts.h> - not found on macos catalina */
+#include <sys/ipc.h>
+#include <sys/mman.h>
+#include <sys/msg.h>
+#include <sys/random.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/statvfs.h>
+#include <sys/time.h>
+#include <sys/times.h>
+#include <sys/timex.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <syslog.h>
+#include <tar.h>
+#include <termios.h>
+#include <tgmath.h>
+#include <time.h>
+/* #include <trace.h> - not found on macos catalina */
+#include <ulimit.h>
+#include <unistd.h>
+#include <utime.h>
+#include <utmpx.h>
+#include <wchar.h>
+#include <wctype.h>
+#include <wordexp.h>
+
+// macOS system headers
+#include <mach/clock.h>
+#include <mach/mach.h>
+#include <mach/mach_time.h>
+#include <mach/thread_state.h>
+#include <mach/vm_param.h>
+#include <sys/acl.h>
+#include <sys/attr.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/clonefile.h>
+#include <libproc.h>
+
+// Depended on by libcxx
+#include <Block.h>
+#include <xlocale.h>
+#include <copyfile.h>
+#include <mach-o/dyld.h>
+#include <mach-o/fat.h>
+#include <mach-o/nlist.h>
+#include <mach-o/reloc.h>
+#include <mach-o/arch.h>
+#include <mach-o/stab.h>
+#include <mach-o/ranlib.h>
+#include <mach-o/compact_unwind_encoding.h>
+#include <mach-o/arm64/reloc.h>
+#include <mach-o/x86_64/reloc.h>
+#include <ar.h>
+
+// Depended on by LLVM
+#include <sysexits.h>
+#include <crt_externs.h>
+#include <execinfo.h>
+
+// Depended on by several frameworks
+#include <AssertMacros.h>
+#include <device/device_types.h>
+#include <dispatch/dispatch.h>
+#include <hfs/hfs_format.h>
+#include <hfs/hfs_unistr.h>
+#include <libkern/OSAtomic.h>
+#include <libkern/OSAtomicQueue.h>
+#include <libkern/OSByteOrder.h>
+#include <libkern/OSCacheControl.h>
+#include <libkern/OSDebug.h>
+#include <libkern/OSKextLib.h>
+#include <libkern/OSReturn.h>
+#include <libkern/OSThermalNotification.h>
+#include <libkern/OSTypes.h>
+#include <MacTypes.h>
+#include <os/lock.h>
+#include <simd/simd.h>
+#include <xpc/xpc.h>
+#include <CommonCrypto/CommonDigest.h>
+
+#include <objc/message.h>
+#include <objc/NSObject.h>
+#include <objc/NSObjCRuntime.h>
+#include <objc/objc.h>
+#include <objc/objc-runtime.h>
+
+// Depended on by libuv
+#include <paths.h>
+#include <ifaddrs.h>
+#include <net/if_dl.h>
+#include <sys/paths.h>
+
+// Depended on by sqlite-amalgamation
+#include <sys/file.h>
+#include <malloc/malloc.h>
+
+// Provided by macOS LibC
+#include <memory.h>
+#include <zlib.h>
+
+#define _XOPEN_SOURCE
+#include <ucontext.h>
+
+int main(int argc, char **argv) {
+ return 0;
+}