Commit 25a7025613

Andrew Kelley <andrew@ziglang.org>
2022-02-16 03:20:30
ci: use zig-bootstrap for windows
1 parent cc9eb9e
ci/azure/build.zig
@@ -0,0 +1,978 @@
+const std = @import("std");
+const builtin = std.builtin;
+const Builder = std.build.Builder;
+const BufMap = std.BufMap;
+const mem = std.mem;
+const ArrayList = std.ArrayList;
+const io = std.io;
+const fs = std.fs;
+const InstallDirectoryOptions = std.build.InstallDirectoryOptions;
+const assert = std.debug.assert;
+
+const zig_version = std.builtin.Version{ .major = 0, .minor = 10, .patch = 0 };
+
+pub fn build(b: *Builder) !void {
+    b.setPreferredReleaseMode(.ReleaseFast);
+    const mode = b.standardReleaseOptions();
+    const target = b.standardTargetOptions(.{});
+    const single_threaded = b.option(bool, "single-threaded", "Build artifacts that run in single threaded mode");
+    const use_zig_libcxx = b.option(bool, "use-zig-libcxx", "If libc++ is needed, use zig's bundled version, don't try to integrate with the system") orelse false;
+
+    const docgen_exe = b.addExecutable("docgen", "doc/docgen.zig");
+    docgen_exe.single_threaded = single_threaded;
+
+    const rel_zig_exe = try fs.path.relative(b.allocator, b.build_root, b.zig_exe);
+    const langref_out_path = fs.path.join(
+        b.allocator,
+        &[_][]const u8{ b.cache_root, "langref.html" },
+    ) catch unreachable;
+    const docgen_cmd = docgen_exe.run();
+    docgen_cmd.addArgs(&[_][]const u8{
+        rel_zig_exe,
+        "doc" ++ fs.path.sep_str ++ "langref.html.in",
+        langref_out_path,
+    });
+    docgen_cmd.step.dependOn(&docgen_exe.step);
+
+    const docs_step = b.step("docs", "Build documentation");
+    docs_step.dependOn(&docgen_cmd.step);
+
+    const is_stage1 = b.option(bool, "stage1", "Build the stage1 compiler, put stage2 behind a feature flag") orelse false;
+    const omit_stage2 = b.option(bool, "omit-stage2", "Do not include stage2 behind a feature flag inside stage1") orelse false;
+    const static_llvm = b.option(bool, "static-llvm", "Disable integration with system-installed LLVM, Clang, LLD, and libc++") orelse false;
+    const enable_llvm = b.option(bool, "enable-llvm", "Build self-hosted compiler with LLVM backend enabled") orelse (is_stage1 or static_llvm);
+    const llvm_has_m68k = b.option(
+        bool,
+        "llvm-has-m68k",
+        "Whether LLVM has the experimental target m68k enabled",
+    ) orelse false;
+    const llvm_has_csky = b.option(
+        bool,
+        "llvm-has-csky",
+        "Whether LLVM has the experimental target csky enabled",
+    ) orelse false;
+    const llvm_has_ve = b.option(
+        bool,
+        "llvm-has-ve",
+        "Whether LLVM has the experimental target ve enabled",
+    ) orelse false;
+    const llvm_has_arc = b.option(
+        bool,
+        "llvm-has-arc",
+        "Whether LLVM has the experimental target arc enabled",
+    ) orelse false;
+    const config_h_path_option = b.option([]const u8, "config_h", "Path to the generated config.h");
+
+    b.installDirectory(InstallDirectoryOptions{
+        .source_dir = "lib",
+        .install_dir = .lib,
+        .install_subdir = "zig",
+        .exclude_extensions = &[_][]const u8{
+            // exclude files from lib/std/compress/
+            ".gz",
+            ".z.0",
+            ".z.9",
+            "rfc1951.txt",
+            "rfc1952.txt",
+            // exclude files from lib/std/compress/deflate/testdata
+            ".expect",
+            ".expect-noinput",
+            ".golden",
+            ".input",
+            "compress-e.txt",
+            "compress-gettysburg.txt",
+            "compress-pi.txt",
+            "rfc1951.txt",
+            // exclude files from lib/std/tz/
+            ".tzif",
+            // others
+            "README.md",
+        },
+        .blank_extensions = &[_][]const u8{
+            "test.zig",
+        },
+    });
+
+    const tracy = b.option([]const u8, "tracy", "Enable Tracy integration. Supply path to Tracy source");
+    const tracy_callstack = b.option(bool, "tracy-callstack", "Include callstack information with Tracy data. Does nothing if -Dtracy is not provided") orelse false;
+    const tracy_allocation = b.option(bool, "tracy-allocation", "Include allocation information with Tracy data. Does nothing if -Dtracy is not provided") orelse false;
+    const force_gpa = b.option(bool, "force-gpa", "Force the compiler to use GeneralPurposeAllocator") orelse false;
+    const link_libc = b.option(bool, "force-link-libc", "Force self-hosted compiler to link libc") orelse enable_llvm;
+    const strip = b.option(bool, "strip", "Omit debug information") orelse false;
+
+    const mem_leak_frames: u32 = b.option(u32, "mem-leak-frames", "How many stack frames to print when a memory leak occurs. Tests get 2x this amount.") orelse blk: {
+        if (strip) break :blk @as(u32, 0);
+        if (mode != .Debug) break :blk 0;
+        break :blk 4;
+    };
+
+    const main_file: ?[]const u8 = if (is_stage1) null else "src/main.zig";
+
+    const exe = b.addExecutable("zig", main_file);
+    exe.strip = strip;
+    exe.install();
+    exe.setBuildMode(mode);
+    exe.setTarget(target);
+
+    b.default_step.dependOn(&exe.step);
+    exe.single_threaded = single_threaded;
+
+    if (target.isWindows() and target.getAbi() == .gnu) {
+        // LTO is currently broken on mingw, this can be removed when it's fixed.
+        exe.want_lto = false;
+    }
+
+    const exe_options = b.addOptions();
+    exe.addOptions("build_options", exe_options);
+
+    exe_options.addOption(u32, "mem_leak_frames", mem_leak_frames);
+    exe_options.addOption(bool, "skip_non_native", false);
+    exe_options.addOption(bool, "have_llvm", enable_llvm);
+    exe_options.addOption(bool, "llvm_has_m68k", llvm_has_m68k);
+    exe_options.addOption(bool, "llvm_has_csky", llvm_has_csky);
+    exe_options.addOption(bool, "llvm_has_ve", llvm_has_ve);
+    exe_options.addOption(bool, "llvm_has_arc", llvm_has_arc);
+    exe_options.addOption(bool, "force_gpa", force_gpa);
+
+    if (link_libc) {
+        exe.linkLibC();
+    }
+
+    const is_debug = mode == .Debug;
+    const enable_logging = b.option(bool, "log", "Enable debug logging with --debug-log") orelse is_debug;
+    const enable_link_snapshots = b.option(bool, "link-snapshot", "Whether to enable linker state snapshots") orelse false;
+
+    const opt_version_string = b.option([]const u8, "version-string", "Override Zig version string. Default is to find out with git.");
+    const version = if (opt_version_string) |version| version else v: {
+        const version_string = b.fmt("{d}.{d}.{d}", .{ zig_version.major, zig_version.minor, zig_version.patch });
+
+        var code: u8 = undefined;
+        const git_describe_untrimmed = b.execAllowFail(&[_][]const u8{
+            "git", "-C", b.build_root, "describe", "--match", "*.*.*", "--tags",
+        }, &code, .Ignore) catch {
+            break :v version_string;
+        };
+        const git_describe = mem.trim(u8, git_describe_untrimmed, " \n\r");
+
+        switch (mem.count(u8, git_describe, "-")) {
+            0 => {
+                // Tagged release version (e.g. 0.9.0).
+                if (!mem.eql(u8, git_describe, version_string)) {
+                    std.debug.print("Zig version '{s}' does not match Git tag '{s}'\n", .{ version_string, git_describe });
+                    std.process.exit(1);
+                }
+                break :v version_string;
+            },
+            2 => {
+                // Untagged development build (e.g. 0.9.0-dev.2025+ecf0050a9).
+                var it = mem.split(u8, git_describe, "-");
+                const tagged_ancestor = it.next() orelse unreachable;
+                const commit_height = it.next() orelse unreachable;
+                const commit_id = it.next() orelse unreachable;
+
+                const ancestor_ver = try std.builtin.Version.parse(tagged_ancestor);
+                if (zig_version.order(ancestor_ver) != .gt) {
+                    std.debug.print("Zig version '{}' must be greater than tagged ancestor '{}'\n", .{ zig_version, ancestor_ver });
+                    std.process.exit(1);
+                }
+
+                // Check that the commit hash is prefixed with a 'g' (a Git convention).
+                if (commit_id.len < 1 or commit_id[0] != 'g') {
+                    std.debug.print("Unexpected `git describe` output: {s}\n", .{git_describe});
+                    break :v version_string;
+                }
+
+                // The version is reformatted in accordance with the https://semver.org specification.
+                break :v b.fmt("{s}-dev.{s}+{s}", .{ version_string, commit_height, commit_id[1..] });
+            },
+            else => {
+                std.debug.print("Unexpected `git describe` output: {s}\n", .{git_describe});
+                break :v version_string;
+            },
+        }
+    };
+    exe_options.addOption([:0]const u8, "version", try b.allocator.dupeZ(u8, version));
+
+    if (enable_llvm) {
+        const cmake_cfg = if (static_llvm) null else findAndParseConfigH(b, config_h_path_option);
+
+        if (is_stage1) {
+            const softfloat = b.addStaticLibrary("softfloat", null);
+            softfloat.setBuildMode(.ReleaseFast);
+            softfloat.setTarget(target);
+            softfloat.addIncludeDir("deps/SoftFloat-3e-prebuilt");
+            softfloat.addIncludeDir("deps/SoftFloat-3e/source/8086");
+            softfloat.addIncludeDir("deps/SoftFloat-3e/source/include");
+            softfloat.addCSourceFiles(&softfloat_sources, &[_][]const u8{ "-std=c99", "-O3" });
+            softfloat.single_threaded = single_threaded;
+
+            const zig0 = b.addExecutable("zig0", null);
+            zig0.addCSourceFiles(&.{"src/stage1/zig0.cpp"}, &exe_cflags);
+            zig0.addIncludeDir("zig-cache/tmp"); // for config.h
+            zig0.defineCMacro("ZIG_VERSION_MAJOR", b.fmt("{d}", .{zig_version.major}));
+            zig0.defineCMacro("ZIG_VERSION_MINOR", b.fmt("{d}", .{zig_version.minor}));
+            zig0.defineCMacro("ZIG_VERSION_PATCH", b.fmt("{d}", .{zig_version.patch}));
+            zig0.defineCMacro("ZIG_VERSION_STRING", b.fmt("\"{s}\"", .{version}));
+
+            for ([_]*std.build.LibExeObjStep{ zig0, exe }) |artifact| {
+                artifact.addIncludeDir("src");
+                artifact.addIncludeDir("deps/SoftFloat-3e/source/include");
+                artifact.addIncludeDir("deps/SoftFloat-3e-prebuilt");
+
+                artifact.defineCMacro("ZIG_LINK_MODE", "Static");
+
+                artifact.addCSourceFiles(&stage1_sources, &exe_cflags);
+                artifact.addCSourceFiles(&optimized_c_sources, &[_][]const u8{ "-std=c99", "-O3" });
+
+                artifact.linkLibrary(softfloat);
+                artifact.linkLibCpp();
+            }
+
+            try addStaticLlvmOptionsToExe(zig0);
+
+            const zig1_obj_ext = target.getObjectFormat().fileExt(target.getCpuArch());
+            const zig1_obj_path = b.pathJoin(&.{ "zig-cache", "tmp", b.fmt("zig1{s}", .{zig1_obj_ext}) });
+            const zig1_compiler_rt_path = b.pathJoin(&.{ b.pathFromRoot("lib"), "std", "special", "compiler_rt.zig" });
+
+            const zig1_obj = zig0.run();
+            zig1_obj.addArgs(&.{
+                "src/stage1.zig",
+                "-target",
+                try target.zigTriple(b.allocator),
+                "-mcpu=baseline",
+                "--name",
+                "zig1",
+                "--zig-lib-dir",
+                b.pathFromRoot("lib"),
+                b.fmt("-femit-bin={s}", .{b.pathFromRoot(zig1_obj_path)}),
+                "-fcompiler-rt",
+                "-lc",
+            });
+            {
+                zig1_obj.addArgs(&.{ "--pkg-begin", "build_options" });
+                zig1_obj.addFileSourceArg(exe_options.getSource());
+                zig1_obj.addArgs(&.{ "--pkg-end", "--pkg-begin", "compiler_rt", zig1_compiler_rt_path, "--pkg-end" });
+            }
+            switch (mode) {
+                .Debug => {},
+                .ReleaseFast => {
+                    zig1_obj.addArg("-OReleaseFast");
+                    zig1_obj.addArg("--strip");
+                },
+                .ReleaseSafe => {
+                    zig1_obj.addArg("-OReleaseSafe");
+                    zig1_obj.addArg("--strip");
+                },
+                .ReleaseSmall => {
+                    zig1_obj.addArg("-OReleaseSmall");
+                    zig1_obj.addArg("--strip");
+                },
+            }
+            if (single_threaded orelse false) {
+                zig1_obj.addArg("-fsingle-threaded");
+            }
+
+            exe.step.dependOn(&zig1_obj.step);
+            exe.addObjectFile(zig1_obj_path);
+
+            // This is intentionally a dummy path. stage1.zig tries to @import("compiler_rt") in case
+            // of being built by cmake. But when built by zig it's gonna get a compiler_rt so that
+            // is pointless.
+            exe.addPackagePath("compiler_rt", "src/empty.zig");
+        }
+        if (cmake_cfg) |cfg| {
+            // Inside this code path, we have to coordinate with system packaged LLVM, Clang, and LLD.
+            // That means we also have to rely on stage1 compiled c++ files. We parse config.h to find
+            // the information passed on to us from cmake.
+            if (cfg.cmake_prefix_path.len > 0) {
+                b.addSearchPrefix(cfg.cmake_prefix_path);
+            }
+
+            try addCmakeCfgOptionsToExe(b, cfg, exe, use_zig_libcxx);
+        } else {
+            // Here we are -Denable-llvm but no cmake integration.
+            try addStaticLlvmOptionsToExe(exe);
+        }
+    }
+
+    const semver = try std.SemanticVersion.parse(version);
+    exe_options.addOption(std.SemanticVersion, "semver", semver);
+
+    exe_options.addOption(bool, "enable_logging", enable_logging);
+    exe_options.addOption(bool, "enable_link_snapshots", enable_link_snapshots);
+    exe_options.addOption(bool, "enable_tracy", tracy != null);
+    exe_options.addOption(bool, "enable_tracy_callstack", tracy_callstack);
+    exe_options.addOption(bool, "enable_tracy_allocation", tracy_allocation);
+    exe_options.addOption(bool, "is_stage1", is_stage1);
+    exe_options.addOption(bool, "omit_stage2", omit_stage2);
+    if (tracy) |tracy_path| {
+        const client_cpp = fs.path.join(
+            b.allocator,
+            &[_][]const u8{ tracy_path, "TracyClient.cpp" },
+        ) catch unreachable;
+
+        // On mingw, we need to opt into windows 7+ to get some features required by tracy.
+        const tracy_c_flags: []const []const u8 = if (target.isWindows() and target.getAbi() == .gnu)
+            &[_][]const u8{ "-DTRACY_ENABLE=1", "-fno-sanitize=undefined", "-D_WIN32_WINNT=0x601" }
+        else
+            &[_][]const u8{ "-DTRACY_ENABLE=1", "-fno-sanitize=undefined" };
+
+        exe.addIncludeDir(tracy_path);
+        exe.addCSourceFile(client_cpp, tracy_c_flags);
+        if (!enable_llvm) {
+            exe.linkSystemLibraryName("c++");
+        }
+        exe.linkLibC();
+
+        if (target.isWindows()) {
+            exe.linkSystemLibrary("dbghelp");
+            exe.linkSystemLibrary("ws2_32");
+        }
+    }
+}
+
+const exe_cflags = [_][]const u8{
+    "-std=c++14",
+    "-D__STDC_CONSTANT_MACROS",
+    "-D__STDC_FORMAT_MACROS",
+    "-D__STDC_LIMIT_MACROS",
+    "-D_GNU_SOURCE",
+    "-fvisibility-inlines-hidden",
+    "-fno-exceptions",
+    "-fno-rtti",
+    "-Werror=type-limits",
+    "-Wno-missing-braces",
+    "-Wno-comment",
+};
+
+fn addCmakeCfgOptionsToExe(
+    b: *Builder,
+    cfg: CMakeConfig,
+    exe: *std.build.LibExeObjStep,
+    use_zig_libcxx: bool,
+) !void {
+    exe.addObjectFile(fs.path.join(b.allocator, &[_][]const u8{
+        cfg.cmake_binary_dir,
+        "zigcpp",
+        b.fmt("{s}{s}{s}", .{ exe.target.libPrefix(), "zigcpp", exe.target.staticLibSuffix() }),
+    }) catch unreachable);
+    assert(cfg.lld_include_dir.len != 0);
+    exe.addIncludeDir(cfg.lld_include_dir);
+    addCMakeLibraryList(exe, cfg.clang_libraries);
+    addCMakeLibraryList(exe, cfg.lld_libraries);
+    addCMakeLibraryList(exe, cfg.llvm_libraries);
+
+    if (use_zig_libcxx) {
+        exe.linkLibCpp();
+    } else {
+        const need_cpp_includes = true;
+
+        // System -lc++ must be used because in this code path we are attempting to link
+        // against system-provided LLVM, Clang, LLD.
+        if (exe.target.getOsTag() == .linux) {
+            // First we try to static link against gcc libstdc++. If that doesn't work,
+            // we fall back to -lc++ and cross our fingers.
+            addCxxKnownPath(b, cfg, exe, "libstdc++.a", "", need_cpp_includes) catch |err| switch (err) {
+                error.RequiredLibraryNotFound => {
+                    exe.linkSystemLibrary("c++");
+                },
+                else => |e| return e,
+            };
+            exe.linkSystemLibrary("unwind");
+        } else if (exe.target.isFreeBSD()) {
+            try addCxxKnownPath(b, cfg, exe, "libc++.a", null, need_cpp_includes);
+            exe.linkSystemLibrary("pthread");
+        } else if (exe.target.getOsTag() == .openbsd) {
+            try addCxxKnownPath(b, cfg, exe, "libc++.a", null, need_cpp_includes);
+            try addCxxKnownPath(b, cfg, exe, "libc++abi.a", null, need_cpp_includes);
+        } else if (exe.target.isDarwin()) {
+            exe.linkSystemLibrary("c++");
+        }
+    }
+
+    if (cfg.dia_guids_lib.len != 0) {
+        exe.addObjectFile(cfg.dia_guids_lib);
+    }
+}
+
+fn addStaticLlvmOptionsToExe(
+    exe: *std.build.LibExeObjStep,
+) !void {
+    // Adds the Zig C++ sources which both stage1 and stage2 need.
+    //
+    // We need this because otherwise zig_clang_cc1_main.cpp ends up pulling
+    // in a dependency on llvm::cfg::Update<llvm::BasicBlock*>::dump() which is
+    // unavailable when LLVM is compiled in Release mode.
+    const zig_cpp_cflags = exe_cflags ++ [_][]const u8{"-DNDEBUG=1"};
+    exe.addCSourceFiles(&zig_cpp_sources, &zig_cpp_cflags);
+
+    for (clang_libs) |lib_name| {
+        exe.linkSystemLibrary(lib_name);
+    }
+
+    for (lld_libs) |lib_name| {
+        exe.linkSystemLibrary(lib_name);
+    }
+
+    for (llvm_libs) |lib_name| {
+        exe.linkSystemLibrary(lib_name);
+    }
+
+    exe.linkSystemLibrary("z");
+
+    // This means we rely on clang-or-zig-built LLVM, Clang, LLD libraries.
+    exe.linkSystemLibrary("c++");
+
+    if (exe.target.getOs().tag == .windows) {
+        exe.linkSystemLibrary("version");
+        exe.linkSystemLibrary("uuid");
+        exe.linkSystemLibrary("ole32");
+    }
+}
+
+fn addCxxKnownPath(
+    b: *Builder,
+    ctx: CMakeConfig,
+    exe: *std.build.LibExeObjStep,
+    objname: []const u8,
+    errtxt: ?[]const u8,
+    need_cpp_includes: bool,
+) !void {
+    const path_padded = try b.exec(&[_][]const u8{
+        ctx.cxx_compiler,
+        b.fmt("-print-file-name={s}", .{objname}),
+    });
+    const path_unpadded = mem.tokenize(u8, path_padded, "\r\n").next().?;
+    if (mem.eql(u8, path_unpadded, objname)) {
+        if (errtxt) |msg| {
+            std.debug.print("{s}", .{msg});
+        } else {
+            std.debug.print("Unable to determine path to {s}\n", .{objname});
+        }
+        return error.RequiredLibraryNotFound;
+    }
+    exe.addObjectFile(path_unpadded);
+
+    // TODO a way to integrate with system c++ include files here
+    // cc -E -Wp,-v -xc++ /dev/null
+    if (need_cpp_includes) {
+        // I used these temporarily for testing something but we obviously need a
+        // more general purpose solution here.
+        //exe.addIncludeDir("/nix/store/fvf3qjqa5qpcjjkq37pb6ypnk1mzhf5h-gcc-9.3.0/lib/gcc/x86_64-unknown-linux-gnu/9.3.0/../../../../include/c++/9.3.0");
+        //exe.addIncludeDir("/nix/store/fvf3qjqa5qpcjjkq37pb6ypnk1mzhf5h-gcc-9.3.0/lib/gcc/x86_64-unknown-linux-gnu/9.3.0/../../../../include/c++/9.3.0/x86_64-unknown-linux-gnu");
+        //exe.addIncludeDir("/nix/store/fvf3qjqa5qpcjjkq37pb6ypnk1mzhf5h-gcc-9.3.0/lib/gcc/x86_64-unknown-linux-gnu/9.3.0/../../../../include/c++/9.3.0/backward");
+    }
+}
+
+fn addCMakeLibraryList(exe: *std.build.LibExeObjStep, list: []const u8) void {
+    var it = mem.tokenize(u8, list, ";");
+    while (it.next()) |lib| {
+        if (mem.startsWith(u8, lib, "-l")) {
+            exe.linkSystemLibrary(lib["-l".len..]);
+        } else {
+            exe.addObjectFile(lib);
+        }
+    }
+}
+
+const CMakeConfig = struct {
+    cmake_binary_dir: []const u8,
+    cmake_prefix_path: []const u8,
+    cxx_compiler: []const u8,
+    lld_include_dir: []const u8,
+    lld_libraries: []const u8,
+    clang_libraries: []const u8,
+    llvm_libraries: []const u8,
+    dia_guids_lib: []const u8,
+};
+
+const max_config_h_bytes = 1 * 1024 * 1024;
+
+fn findAndParseConfigH(b: *Builder, config_h_path_option: ?[]const u8) ?CMakeConfig {
+    const config_h_text: []const u8 = if (config_h_path_option) |config_h_path| blk: {
+        break :blk fs.cwd().readFileAlloc(b.allocator, config_h_path, max_config_h_bytes) catch unreachable;
+    } else blk: {
+        // TODO this should stop looking for config.h once it detects we hit the
+        // zig source root directory.
+        var check_dir = fs.path.dirname(b.zig_exe).?;
+        while (true) {
+            var dir = fs.cwd().openDir(check_dir, .{}) catch unreachable;
+            defer dir.close();
+
+            break :blk dir.readFileAlloc(b.allocator, "config.h", max_config_h_bytes) catch |err| switch (err) {
+                error.FileNotFound => {
+                    const new_check_dir = fs.path.dirname(check_dir);
+                    if (new_check_dir == null or mem.eql(u8, new_check_dir.?, check_dir)) {
+                        return null;
+                    }
+                    check_dir = new_check_dir.?;
+                    continue;
+                },
+                else => unreachable,
+            };
+        } else unreachable; // TODO should not need `else unreachable`.
+    };
+
+    var ctx: CMakeConfig = .{
+        .cmake_binary_dir = undefined,
+        .cmake_prefix_path = undefined,
+        .cxx_compiler = undefined,
+        .lld_include_dir = undefined,
+        .lld_libraries = undefined,
+        .clang_libraries = undefined,
+        .llvm_libraries = undefined,
+        .dia_guids_lib = undefined,
+    };
+
+    const mappings = [_]struct { prefix: []const u8, field: []const u8 }{
+        .{
+            .prefix = "#define ZIG_CMAKE_BINARY_DIR ",
+            .field = "cmake_binary_dir",
+        },
+        .{
+            .prefix = "#define ZIG_CMAKE_PREFIX_PATH ",
+            .field = "cmake_prefix_path",
+        },
+        .{
+            .prefix = "#define ZIG_CXX_COMPILER ",
+            .field = "cxx_compiler",
+        },
+        .{
+            .prefix = "#define ZIG_LLD_INCLUDE_PATH ",
+            .field = "lld_include_dir",
+        },
+        .{
+            .prefix = "#define ZIG_LLD_LIBRARIES ",
+            .field = "lld_libraries",
+        },
+        .{
+            .prefix = "#define ZIG_CLANG_LIBRARIES ",
+            .field = "clang_libraries",
+        },
+        .{
+            .prefix = "#define ZIG_LLVM_LIBRARIES ",
+            .field = "llvm_libraries",
+        },
+        .{
+            .prefix = "#define ZIG_DIA_GUIDS_LIB ",
+            .field = "dia_guids_lib",
+        },
+    };
+
+    var lines_it = mem.tokenize(u8, config_h_text, "\r\n");
+    while (lines_it.next()) |line| {
+        inline for (mappings) |mapping| {
+            if (mem.startsWith(u8, line, mapping.prefix)) {
+                var it = mem.split(u8, line, "\"");
+                _ = it.next().?; // skip the stuff before the quote
+                const quoted = it.next().?; // the stuff inside the quote
+                @field(ctx, mapping.field) = toNativePathSep(b, quoted);
+            }
+        }
+    }
+    return ctx;
+}
+
+fn toNativePathSep(b: *Builder, s: []const u8) []u8 {
+    const duplicated = b.allocator.dupe(u8, s) catch unreachable;
+    for (duplicated) |*byte| switch (byte.*) {
+        '/' => byte.* = fs.path.sep,
+        else => {},
+    };
+    return duplicated;
+}
+
+const softfloat_sources = [_][]const u8{
+    "deps/SoftFloat-3e/source/8086/f128M_isSignalingNaN.c",
+    "deps/SoftFloat-3e/source/8086/extF80M_isSignalingNaN.c",
+    "deps/SoftFloat-3e/source/8086/s_commonNaNToF128M.c",
+    "deps/SoftFloat-3e/source/8086/s_commonNaNToExtF80M.c",
+    "deps/SoftFloat-3e/source/8086/s_commonNaNToF16UI.c",
+    "deps/SoftFloat-3e/source/8086/s_commonNaNToF32UI.c",
+    "deps/SoftFloat-3e/source/8086/s_commonNaNToF64UI.c",
+    "deps/SoftFloat-3e/source/8086/s_f128MToCommonNaN.c",
+    "deps/SoftFloat-3e/source/8086/s_extF80MToCommonNaN.c",
+    "deps/SoftFloat-3e/source/8086/s_f16UIToCommonNaN.c",
+    "deps/SoftFloat-3e/source/8086/s_f32UIToCommonNaN.c",
+    "deps/SoftFloat-3e/source/8086/s_f64UIToCommonNaN.c",
+    "deps/SoftFloat-3e/source/8086/s_propagateNaNF128M.c",
+    "deps/SoftFloat-3e/source/8086/s_propagateNaNExtF80M.c",
+    "deps/SoftFloat-3e/source/8086/s_propagateNaNF16UI.c",
+    "deps/SoftFloat-3e/source/8086/softfloat_raiseFlags.c",
+    "deps/SoftFloat-3e/source/f128M_add.c",
+    "deps/SoftFloat-3e/source/f128M_div.c",
+    "deps/SoftFloat-3e/source/f128M_eq.c",
+    "deps/SoftFloat-3e/source/f128M_eq_signaling.c",
+    "deps/SoftFloat-3e/source/f128M_le.c",
+    "deps/SoftFloat-3e/source/f128M_le_quiet.c",
+    "deps/SoftFloat-3e/source/f128M_lt.c",
+    "deps/SoftFloat-3e/source/f128M_lt_quiet.c",
+    "deps/SoftFloat-3e/source/f128M_mul.c",
+    "deps/SoftFloat-3e/source/f128M_mulAdd.c",
+    "deps/SoftFloat-3e/source/f128M_rem.c",
+    "deps/SoftFloat-3e/source/f128M_roundToInt.c",
+    "deps/SoftFloat-3e/source/f128M_sqrt.c",
+    "deps/SoftFloat-3e/source/f128M_sub.c",
+    "deps/SoftFloat-3e/source/f128M_to_f16.c",
+    "deps/SoftFloat-3e/source/f128M_to_f32.c",
+    "deps/SoftFloat-3e/source/f128M_to_f64.c",
+    "deps/SoftFloat-3e/source/f128M_to_extF80M.c",
+    "deps/SoftFloat-3e/source/f128M_to_i32.c",
+    "deps/SoftFloat-3e/source/f128M_to_i32_r_minMag.c",
+    "deps/SoftFloat-3e/source/f128M_to_i64.c",
+    "deps/SoftFloat-3e/source/f128M_to_i64_r_minMag.c",
+    "deps/SoftFloat-3e/source/f128M_to_ui32.c",
+    "deps/SoftFloat-3e/source/f128M_to_ui32_r_minMag.c",
+    "deps/SoftFloat-3e/source/f128M_to_ui64.c",
+    "deps/SoftFloat-3e/source/f128M_to_ui64_r_minMag.c",
+    "deps/SoftFloat-3e/source/extF80M_add.c",
+    "deps/SoftFloat-3e/source/extF80M_div.c",
+    "deps/SoftFloat-3e/source/extF80M_eq.c",
+    "deps/SoftFloat-3e/source/extF80M_le.c",
+    "deps/SoftFloat-3e/source/extF80M_lt.c",
+    "deps/SoftFloat-3e/source/extF80M_mul.c",
+    "deps/SoftFloat-3e/source/extF80M_rem.c",
+    "deps/SoftFloat-3e/source/extF80M_roundToInt.c",
+    "deps/SoftFloat-3e/source/extF80M_sqrt.c",
+    "deps/SoftFloat-3e/source/extF80M_sub.c",
+    "deps/SoftFloat-3e/source/extF80M_to_f16.c",
+    "deps/SoftFloat-3e/source/extF80M_to_f32.c",
+    "deps/SoftFloat-3e/source/extF80M_to_f64.c",
+    "deps/SoftFloat-3e/source/extF80M_to_f128M.c",
+    "deps/SoftFloat-3e/source/f16_add.c",
+    "deps/SoftFloat-3e/source/f16_div.c",
+    "deps/SoftFloat-3e/source/f16_eq.c",
+    "deps/SoftFloat-3e/source/f16_isSignalingNaN.c",
+    "deps/SoftFloat-3e/source/f16_lt.c",
+    "deps/SoftFloat-3e/source/f16_mul.c",
+    "deps/SoftFloat-3e/source/f16_mulAdd.c",
+    "deps/SoftFloat-3e/source/f16_rem.c",
+    "deps/SoftFloat-3e/source/f16_roundToInt.c",
+    "deps/SoftFloat-3e/source/f16_sqrt.c",
+    "deps/SoftFloat-3e/source/f16_sub.c",
+    "deps/SoftFloat-3e/source/f16_to_extF80M.c",
+    "deps/SoftFloat-3e/source/f16_to_f128M.c",
+    "deps/SoftFloat-3e/source/f16_to_f64.c",
+    "deps/SoftFloat-3e/source/f32_to_extF80M.c",
+    "deps/SoftFloat-3e/source/f32_to_f128M.c",
+    "deps/SoftFloat-3e/source/f64_to_extF80M.c",
+    "deps/SoftFloat-3e/source/f64_to_f128M.c",
+    "deps/SoftFloat-3e/source/f64_to_f16.c",
+    "deps/SoftFloat-3e/source/i32_to_f128M.c",
+    "deps/SoftFloat-3e/source/s_add256M.c",
+    "deps/SoftFloat-3e/source/s_addCarryM.c",
+    "deps/SoftFloat-3e/source/s_addComplCarryM.c",
+    "deps/SoftFloat-3e/source/s_addF128M.c",
+    "deps/SoftFloat-3e/source/s_addExtF80M.c",
+    "deps/SoftFloat-3e/source/s_addM.c",
+    "deps/SoftFloat-3e/source/s_addMagsF16.c",
+    "deps/SoftFloat-3e/source/s_addMagsF32.c",
+    "deps/SoftFloat-3e/source/s_addMagsF64.c",
+    "deps/SoftFloat-3e/source/s_approxRecip32_1.c",
+    "deps/SoftFloat-3e/source/s_approxRecipSqrt32_1.c",
+    "deps/SoftFloat-3e/source/s_approxRecipSqrt_1Ks.c",
+    "deps/SoftFloat-3e/source/s_approxRecip_1Ks.c",
+    "deps/SoftFloat-3e/source/s_compare128M.c",
+    "deps/SoftFloat-3e/source/s_compare96M.c",
+    "deps/SoftFloat-3e/source/s_compareNonnormExtF80M.c",
+    "deps/SoftFloat-3e/source/s_countLeadingZeros16.c",
+    "deps/SoftFloat-3e/source/s_countLeadingZeros32.c",
+    "deps/SoftFloat-3e/source/s_countLeadingZeros64.c",
+    "deps/SoftFloat-3e/source/s_countLeadingZeros8.c",
+    "deps/SoftFloat-3e/source/s_eq128.c",
+    "deps/SoftFloat-3e/source/s_invalidF128M.c",
+    "deps/SoftFloat-3e/source/s_invalidExtF80M.c",
+    "deps/SoftFloat-3e/source/s_isNaNF128M.c",
+    "deps/SoftFloat-3e/source/s_le128.c",
+    "deps/SoftFloat-3e/source/s_lt128.c",
+    "deps/SoftFloat-3e/source/s_mul128MTo256M.c",
+    "deps/SoftFloat-3e/source/s_mul64To128M.c",
+    "deps/SoftFloat-3e/source/s_mulAddF128M.c",
+    "deps/SoftFloat-3e/source/s_mulAddF16.c",
+    "deps/SoftFloat-3e/source/s_mulAddF32.c",
+    "deps/SoftFloat-3e/source/s_mulAddF64.c",
+    "deps/SoftFloat-3e/source/s_negXM.c",
+    "deps/SoftFloat-3e/source/s_normExtF80SigM.c",
+    "deps/SoftFloat-3e/source/s_normRoundPackMToF128M.c",
+    "deps/SoftFloat-3e/source/s_normRoundPackMToExtF80M.c",
+    "deps/SoftFloat-3e/source/s_normRoundPackToF16.c",
+    "deps/SoftFloat-3e/source/s_normRoundPackToF32.c",
+    "deps/SoftFloat-3e/source/s_normRoundPackToF64.c",
+    "deps/SoftFloat-3e/source/s_normSubnormalF128SigM.c",
+    "deps/SoftFloat-3e/source/s_normSubnormalF16Sig.c",
+    "deps/SoftFloat-3e/source/s_normSubnormalF32Sig.c",
+    "deps/SoftFloat-3e/source/s_normSubnormalF64Sig.c",
+    "deps/SoftFloat-3e/source/s_remStepMBy32.c",
+    "deps/SoftFloat-3e/source/s_roundMToI64.c",
+    "deps/SoftFloat-3e/source/s_roundMToUI64.c",
+    "deps/SoftFloat-3e/source/s_roundPackMToExtF80M.c",
+    "deps/SoftFloat-3e/source/s_roundPackMToF128M.c",
+    "deps/SoftFloat-3e/source/s_roundPackToF16.c",
+    "deps/SoftFloat-3e/source/s_roundPackToF32.c",
+    "deps/SoftFloat-3e/source/s_roundPackToF64.c",
+    "deps/SoftFloat-3e/source/s_roundToI32.c",
+    "deps/SoftFloat-3e/source/s_roundToI64.c",
+    "deps/SoftFloat-3e/source/s_roundToUI32.c",
+    "deps/SoftFloat-3e/source/s_roundToUI64.c",
+    "deps/SoftFloat-3e/source/s_shiftLeftM.c",
+    "deps/SoftFloat-3e/source/s_shiftNormSigF128M.c",
+    "deps/SoftFloat-3e/source/s_shiftRightJam256M.c",
+    "deps/SoftFloat-3e/source/s_shiftRightJam32.c",
+    "deps/SoftFloat-3e/source/s_shiftRightJam64.c",
+    "deps/SoftFloat-3e/source/s_shiftRightJamM.c",
+    "deps/SoftFloat-3e/source/s_shiftRightM.c",
+    "deps/SoftFloat-3e/source/s_shortShiftLeft64To96M.c",
+    "deps/SoftFloat-3e/source/s_shortShiftLeftM.c",
+    "deps/SoftFloat-3e/source/s_shortShiftRightExtendM.c",
+    "deps/SoftFloat-3e/source/s_shortShiftRightJam64.c",
+    "deps/SoftFloat-3e/source/s_shortShiftRightJamM.c",
+    "deps/SoftFloat-3e/source/s_shortShiftRightM.c",
+    "deps/SoftFloat-3e/source/s_sub1XM.c",
+    "deps/SoftFloat-3e/source/s_sub256M.c",
+    "deps/SoftFloat-3e/source/s_subM.c",
+    "deps/SoftFloat-3e/source/s_subMagsF16.c",
+    "deps/SoftFloat-3e/source/s_subMagsF32.c",
+    "deps/SoftFloat-3e/source/s_subMagsF64.c",
+    "deps/SoftFloat-3e/source/s_tryPropagateNaNF128M.c",
+    "deps/SoftFloat-3e/source/s_tryPropagateNaNExtF80M.c",
+    "deps/SoftFloat-3e/source/softfloat_state.c",
+    "deps/SoftFloat-3e/source/ui32_to_f128M.c",
+    "deps/SoftFloat-3e/source/ui64_to_f128M.c",
+    "deps/SoftFloat-3e/source/ui32_to_extF80M.c",
+    "deps/SoftFloat-3e/source/ui64_to_extF80M.c",
+};
+
+const stage1_sources = [_][]const u8{
+    "src/stage1/analyze.cpp",
+    "src/stage1/astgen.cpp",
+    "src/stage1/bigfloat.cpp",
+    "src/stage1/bigint.cpp",
+    "src/stage1/buffer.cpp",
+    "src/stage1/codegen.cpp",
+    "src/stage1/dump_analysis.cpp",
+    "src/stage1/errmsg.cpp",
+    "src/stage1/error.cpp",
+    "src/stage1/heap.cpp",
+    "src/stage1/ir.cpp",
+    "src/stage1/ir_print.cpp",
+    "src/stage1/mem.cpp",
+    "src/stage1/os.cpp",
+    "src/stage1/parser.cpp",
+    "src/stage1/range_set.cpp",
+    "src/stage1/stage1.cpp",
+    "src/stage1/target.cpp",
+    "src/stage1/tokenizer.cpp",
+    "src/stage1/util.cpp",
+    "src/stage1/softfloat_ext.cpp",
+};
+const optimized_c_sources = [_][]const u8{
+    "src/stage1/parse_f128.c",
+};
+const zig_cpp_sources = [_][]const u8{
+    // These are planned to stay even when we are self-hosted.
+    "src/zig_llvm.cpp",
+    "src/zig_clang.cpp",
+    "src/zig_llvm-ar.cpp",
+    "src/zig_clang_driver.cpp",
+    "src/zig_clang_cc1_main.cpp",
+    "src/zig_clang_cc1as_main.cpp",
+    // https://github.com/ziglang/zig/issues/6363
+    "src/windows_sdk.cpp",
+};
+
+const clang_libs = [_][]const u8{
+    "clangFrontendTool",
+    "clangCodeGen",
+    "clangFrontend",
+    "clangDriver",
+    "clangSerialization",
+    "clangSema",
+    "clangStaticAnalyzerFrontend",
+    "clangStaticAnalyzerCheckers",
+    "clangStaticAnalyzerCore",
+    "clangAnalysis",
+    "clangASTMatchers",
+    "clangAST",
+    "clangParse",
+    "clangSema",
+    "clangBasic",
+    "clangEdit",
+    "clangLex",
+    "clangARCMigrate",
+    "clangRewriteFrontend",
+    "clangRewrite",
+    "clangCrossTU",
+    "clangIndex",
+    "clangToolingCore",
+};
+const lld_libs = [_][]const u8{
+    "lldDriver",
+    "lldMinGW",
+    "lldELF",
+    "lldCOFF",
+    "lldMachO",
+    "lldWasm",
+    "lldReaderWriter",
+    "lldCore",
+    "lldYAML",
+    "lldCommon",
+};
+// This list can be re-generated with `llvm-config --libfiles` and then
+// reformatting using your favorite text editor. Note we do not execute
+// `llvm-config` here because we are cross compiling. Also omit LLVMTableGen
+// from these libs.
+const llvm_libs = [_][]const u8{
+    "LLVMWindowsManifest",
+    "LLVMXRay",
+    "LLVMLibDriver",
+    "LLVMDlltoolDriver",
+    "LLVMCoverage",
+    "LLVMLineEditor",
+    "LLVMXCoreDisassembler",
+    "LLVMXCoreCodeGen",
+    "LLVMXCoreDesc",
+    "LLVMXCoreInfo",
+    "LLVMX86Disassembler",
+    "LLVMX86AsmParser",
+    "LLVMX86CodeGen",
+    "LLVMX86Desc",
+    "LLVMX86Info",
+    "LLVMWebAssemblyDisassembler",
+    "LLVMWebAssemblyAsmParser",
+    "LLVMWebAssemblyCodeGen",
+    "LLVMWebAssemblyDesc",
+    "LLVMWebAssemblyUtils",
+    "LLVMWebAssemblyInfo",
+    "LLVMSystemZDisassembler",
+    "LLVMSystemZAsmParser",
+    "LLVMSystemZCodeGen",
+    "LLVMSystemZDesc",
+    "LLVMSystemZInfo",
+    "LLVMSparcDisassembler",
+    "LLVMSparcAsmParser",
+    "LLVMSparcCodeGen",
+    "LLVMSparcDesc",
+    "LLVMSparcInfo",
+    "LLVMRISCVDisassembler",
+    "LLVMRISCVAsmParser",
+    "LLVMRISCVCodeGen",
+    "LLVMRISCVDesc",
+    "LLVMRISCVInfo",
+    "LLVMPowerPCDisassembler",
+    "LLVMPowerPCAsmParser",
+    "LLVMPowerPCCodeGen",
+    "LLVMPowerPCDesc",
+    "LLVMPowerPCInfo",
+    "LLVMNVPTXCodeGen",
+    "LLVMNVPTXDesc",
+    "LLVMNVPTXInfo",
+    "LLVMMSP430Disassembler",
+    "LLVMMSP430AsmParser",
+    "LLVMMSP430CodeGen",
+    "LLVMMSP430Desc",
+    "LLVMMSP430Info",
+    "LLVMMipsDisassembler",
+    "LLVMMipsAsmParser",
+    "LLVMMipsCodeGen",
+    "LLVMMipsDesc",
+    "LLVMMipsInfo",
+    "LLVMLanaiDisassembler",
+    "LLVMLanaiCodeGen",
+    "LLVMLanaiAsmParser",
+    "LLVMLanaiDesc",
+    "LLVMLanaiInfo",
+    "LLVMHexagonDisassembler",
+    "LLVMHexagonCodeGen",
+    "LLVMHexagonAsmParser",
+    "LLVMHexagonDesc",
+    "LLVMHexagonInfo",
+    "LLVMBPFDisassembler",
+    "LLVMBPFAsmParser",
+    "LLVMBPFCodeGen",
+    "LLVMBPFDesc",
+    "LLVMBPFInfo",
+    "LLVMAVRDisassembler",
+    "LLVMAVRAsmParser",
+    "LLVMAVRCodeGen",
+    "LLVMAVRDesc",
+    "LLVMAVRInfo",
+    "LLVMARMDisassembler",
+    "LLVMARMAsmParser",
+    "LLVMARMCodeGen",
+    "LLVMARMDesc",
+    "LLVMARMUtils",
+    "LLVMARMInfo",
+    "LLVMAMDGPUDisassembler",
+    "LLVMAMDGPUAsmParser",
+    "LLVMAMDGPUCodeGen",
+    "LLVMAMDGPUDesc",
+    "LLVMAMDGPUUtils",
+    "LLVMAMDGPUInfo",
+    "LLVMAArch64Disassembler",
+    "LLVMAArch64AsmParser",
+    "LLVMAArch64CodeGen",
+    "LLVMAArch64Desc",
+    "LLVMAArch64Utils",
+    "LLVMAArch64Info",
+    "LLVMOrcJIT",
+    "LLVMMCJIT",
+    "LLVMJITLink",
+    "LLVMInterpreter",
+    "LLVMExecutionEngine",
+    "LLVMRuntimeDyld",
+    "LLVMOrcTargetProcess",
+    "LLVMOrcShared",
+    "LLVMDWP",
+    "LLVMSymbolize",
+    "LLVMDebugInfoPDB",
+    "LLVMDebugInfoGSYM",
+    "LLVMOption",
+    "LLVMObjectYAML",
+    "LLVMMCA",
+    "LLVMMCDisassembler",
+    "LLVMLTO",
+    "LLVMPasses",
+    "LLVMCFGuard",
+    "LLVMCoroutines",
+    "LLVMObjCARCOpts",
+    "LLVMipo",
+    "LLVMVectorize",
+    "LLVMLinker",
+    "LLVMInstrumentation",
+    "LLVMFrontendOpenMP",
+    "LLVMFrontendOpenACC",
+    "LLVMExtensions",
+    "LLVMDWARFLinker",
+    "LLVMGlobalISel",
+    "LLVMMIRParser",
+    "LLVMAsmPrinter",
+    "LLVMDebugInfoMSF",
+    "LLVMDebugInfoDWARF",
+    "LLVMSelectionDAG",
+    "LLVMCodeGen",
+    "LLVMIRReader",
+    "LLVMAsmParser",
+    "LLVMInterfaceStub",
+    "LLVMFileCheck",
+    "LLVMFuzzMutate",
+    "LLVMTarget",
+    "LLVMScalarOpts",
+    "LLVMInstCombine",
+    "LLVMAggressiveInstCombine",
+    "LLVMTransformUtils",
+    "LLVMBitWriter",
+    "LLVMAnalysis",
+    "LLVMProfileData",
+    "LLVMObject",
+    "LLVMTextAPI",
+    "LLVMMCParser",
+    "LLVMMC",
+    "LLVMDebugInfoCodeView",
+    "LLVMBitReader",
+    "LLVMCore",
+    "LLVMRemarks",
+    "LLVMBitstreamReader",
+    "LLVMBinaryFormat",
+    "LLVMSupport",
+    "LLVMDemangle",
+};
ci/azure/pipelines.yml
@@ -42,7 +42,7 @@ jobs:
   - task: DownloadSecureFile@1
     inputs:
       secureFile: s3cfg
-  - script: ci/azure/windows_msvc_script.bat
+  - script: ci/azure/windows_script.bat
     name: main
     displayName: 'Build and test'
 - job: OnMasterSuccess
ci/azure/windows_msvc_install
@@ -1,16 +0,0 @@
-#!/bin/sh
-
-set -x
-set -e
-
-pacman -Suy --needed --noconfirm
-pacman -S --needed --noconfirm wget p7zip python3-pip tar xz
-
-TARBALL="llvm+clang+lld-13.0.0-x86_64-windows-msvc-release-mt.tar.xz"
-
-pip install s3cmd
-wget -nv "https://ziglang.org/deps/$TARBALL"
-# If the first extraction fails, re-try it once; this can happen if the tarball
-# contains symlinks that are in the table of contents before the files that
-# they point to.
-tar -xf $TARBALL || tar --overwrite -xf $TARBALL
ci/azure/windows_msvc_script.bat
@@ -1,39 +0,0 @@
-@echo on
-SET "SRCROOT=%cd%"
-SET "PREVPATH=%PATH%"
-SET "PREVMSYSTEM=%MSYSTEM%"
-
-set "PATH=%CD:~0,2%\msys64\usr\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem"
-SET "MSYSTEM=MINGW64"
-bash -lc "cd ${SRCROOT} && ci/azure/windows_msvc_install" || exit /b
-SET "PATH=%PREVPATH%"
-SET "MSYSTEM=%PREVMSYSTEM%"
-
-SET "ZIGBUILDDIR=%SRCROOT%\build"
-SET "ZIGINSTALLDIR=%ZIGBUILDDIR%\dist"
-SET "ZIGPREFIXPATH=%SRCROOT%\llvm+clang+lld-13.0.0-x86_64-windows-msvc-release-mt"
-
-call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x64
-
-REM Make the `zig version` number consistent.
-REM This will affect the cmake command below.
-git.exe config core.abbrev 9
-git.exe fetch --unshallow
-git.exe fetch --tags
-
-mkdir %ZIGBUILDDIR%
-cd %ZIGBUILDDIR%
-cmake.exe .. -Thost=x64 -G"Visual Studio 16 2019" -A x64 "-DCMAKE_INSTALL_PREFIX=%ZIGINSTALLDIR%" "-DCMAKE_PREFIX_PATH=%ZIGPREFIXPATH%" -DCMAKE_BUILD_TYPE=Release -DZIG_OMIT_STAGE2=ON || exit /b
-msbuild /maxcpucount /p:Configuration=Release INSTALL.vcxproj || exit /b
-
-REM Sadly, stage2 is omitted from this build to save memory on the CI server. Once self-hosted is
-REM built with itself and does not gobble as much memory, we can enable these tests.
-REM "%ZIGINSTALLDIR%\bin\zig.exe" test "..\test\behavior.zig" -fno-stage1 -fLLVM -I "..\test" || exit /b
-
-"%ZIGINSTALLDIR%\bin\zig.exe" build test-toolchain -Dskip-non-native -Dskip-stage2-tests || exit /b
-"%ZIGINSTALLDIR%\bin\zig.exe" build test-std -Dskip-non-native || exit /b
-"%ZIGINSTALLDIR%\bin\zig.exe" build docs || exit /b
-
-set "PATH=%CD:~0,2%\msys64\usr\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem"
-SET "MSYSTEM=MINGW64"
-bash -lc "cd ${SRCROOT} && ci/azure/windows_upload" || exit /b
ci/azure/windows_upload → ci/azure/windows_script
@@ -3,11 +3,60 @@
 set -x
 set -e
 
-if [ "${BUILD_REASON}" != "PullRequest" ]; then
-  cd "$ZIGBUILDDIR"
+pacman -Suy --needed --noconfirm
+pacman -S --needed --noconfirm wget p7zip python3-pip git
+pip install s3cmd
+
+ZIGDIR="$(pwd)"
+ARCH="x86_64"
+TARGET="$ARCH-windows-gnu"
+CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.9.1"
+PREFIX="$HOME/$CACHE_BASENAME"
+ZIG="$PREFIX/bin/zig.exe"
+
+rm -rf $PREFIX
+cd $HOME
+
+wget -nv "https://ziglang.org/deps/$CACHE_BASENAME.zip"
+7z x "$CACHE_BASENAME.zip"
+
+cd $ZIGDIR
+
+# Make the `zig version` number consistent.
+# This will affect the `zig build` command below.
+git config core.abbrev 9
+git fetch --unshallow || true
+git fetch --tags
 
-  mv ../LICENSE dist/
-  mv ../zig-cache/langref.html dist/
+# The dev kit zip file that we have here is old, and may be incompatible with
+# the build.zig script of master branch. So we keep an old version of build.zig
+# here in the CI directory.
+mv build.zig build.zig.master
+mv ci/azure/build.zig build.zig
+
+# stage2 is omitted until we resolve https://github.com/ziglang/zig/issues/6485
+$ZIG build \
+  --prefix dist \
+  --search-prefix "$PREFIX" \
+  -Dstage1 \
+  -Domit-stage2 \
+  -Dstatic-llvm \
+  -Drelease \
+  -Dstrip \
+  -Duse-zig-libcxx \
+  -Dtarget=$TARGET
+
+# Now that we have built an up-to-date zig.exe, we restore the original
+# build script from master branch.
+mv build.zig.master build.zig
+
+dist/bin/zig.exe build test-toolchain -Dskip-non-native -Dskip-stage2-tests
+dist/bin/zig.exe build test-std -Dskip-non-native
+dist/bin/zig.exe build docs
+
+if [ "${BUILD_REASON}" != "PullRequest" ]; then
+  mv LICENSE dist/
+  mv zig-cache/langref.html dist/
   mv dist/bin/zig.exe dist/
   rmdir dist/bin
 
@@ -22,7 +71,6 @@ if [ "${BUILD_REASON}" != "PullRequest" ]; then
   mv dist "$DIRNAME"
   7z a "$TARBALL" "$DIRNAME"
 
-  # mv "$DOWNLOADSECUREFILE_SECUREFILEPATH" "$HOME/.s3cfg"
   s3cmd -c "$DOWNLOADSECUREFILE_SECUREFILEPATH" put -P --add-header="cache-control: public, max-age=31536000, immutable" "$TARBALL" s3://ziglang.org/builds/
 
   SHASUM=$(sha256sum $TARBALL | cut '-d ' -f1)
ci/azure/windows_script.bat
@@ -0,0 +1,8 @@
+@echo on
+SET "SRCROOT=%cd%"
+SET "PREVPATH=%PATH%"
+SET "PREVMSYSTEM=%MSYSTEM%"
+
+set "PATH=%CD:~0,2%\msys64\usr\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem"
+SET "MSYSTEM=MINGW64"
+bash -lc "cd ${SRCROOT} && ci/azure/windows_script" || exit /b
cmake/Findllvm.cmake
@@ -181,19 +181,7 @@ else()
 
   macro(FIND_AND_ADD_LLVM_LIB _libname_)
     string(TOUPPER ${_libname_} _prettylibname_)
-    find_library(LLVM_${_prettylibname_}_LIB NAMES ${_libname_}
-      PATHS
-      ${LLVM_LIBDIRS}
-      /usr/lib/llvm/13/lib
-      /usr/lib/llvm-13/lib
-      /usr/lib/llvm-13.0/lib
-      /usr/local/llvm130/lib
-      /usr/local/llvm13/lib
-      /usr/local/opt/llvm@13/lib
-      /opt/homebrew/opt/llvm@13/lib
-      /mingw64/lib
-      /c/msys64/mingw64/lib
-      c:\\msys64\\mingw64\\lib)
+    find_library(LLVM_${_prettylibname_}_LIB NAMES ${_libname_} PATHS ${LLVM_LIBDIRS})
     set(LLVM_LIBRARIES ${LLVM_LIBRARIES} ${LLVM_${_prettylibname_}_LIB})
   endmacro(FIND_AND_ADD_LLVM_LIB)
 
src/stage1/zig0.cpp
@@ -18,10 +18,9 @@
 #include "buffer.hpp"
 #include "os.hpp"
 
-// This is the only file allowed to include config.h because config.h is
-// only produced when building with cmake. When using the zig build system,
-// zig0.cpp is never touched.
+#ifndef ZIG_VERSION_STRING
 #include "config.h"
+#endif
 
 #include <stdio.h>
 #include <string.h>