404 lines
15 KiB
Zig
404 lines
15 KiB
Zig
const io = @import("io.zig");
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const mem = @import("mem.zig");
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const debug = @import("debug.zig");
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const List = @import("list.zig").List;
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const Allocator = @import("mem.zig").Allocator;
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const os = @import("os/index.zig");
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const StdIo = os.ChildProcess.StdIo;
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const Term = os.ChildProcess.Term;
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const BufSet = @import("buf_set.zig").BufSet;
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error ExtraArg;
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error UncleanExit;
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pub const Builder = struct {
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zig_exe: []const u8,
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allocator: &Allocator,
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exe_list: List(&Exe),
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lib_paths: List([]const u8),
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include_paths: List([]const u8),
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rpaths: List([]const u8),
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pub fn init(zig_exe: []const u8, allocator: &Allocator) -> Builder {
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var self = Builder {
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.zig_exe = zig_exe,
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.allocator = allocator,
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.exe_list = List(&Exe).init(allocator),
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.lib_paths = List([]const u8).init(allocator),
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.include_paths = List([]const u8).init(allocator),
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.rpaths = List([]const u8).init(allocator),
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};
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self.processNixOSEnvVars();
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return self;
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}
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pub fn deinit(self: &Builder) {
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self.exe_list.deinit();
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self.lib_paths.deinit();
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self.include_paths.deinit();
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self.rpaths.deinit();
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}
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pub fn addExe(self: &Builder, root_src: []const u8, name: []const u8) -> &Exe {
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return self.addExeErr(root_src, name) %% |err| handleErr(err);
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}
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pub fn addExeErr(self: &Builder, root_src: []const u8, name: []const u8) -> %&Exe {
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const exe = %return self.allocator.create(Exe);
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*exe = Exe {
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.root_src = root_src,
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.name = name,
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.target = Target.Native,
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.linker_script = LinkerScript.None,
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.link_libs = BufSet.init(self.allocator),
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};
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%return self.exe_list.append(exe);
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return exe;
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}
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pub fn addCIncludePath(self: &Builder, path: []const u8) {
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%%self.include_paths.append(path);
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}
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pub fn addRPath(self: &Builder, path: []const u8) {
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%%self.rpaths.append(path);
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}
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pub fn addLibPath(self: &Builder, path: []const u8) {
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%%self.lib_paths.append(path);
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}
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pub fn make(self: &Builder, leftover_arg_index: usize) -> %void {
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var env_map = %return os.getEnvMap(self.allocator);
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var verbose = false;
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var arg_i: usize = leftover_arg_index;
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while (arg_i < os.args.count(); arg_i += 1) {
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const arg = os.args.at(arg_i);
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if (mem.eql(u8, arg, "--verbose")) {
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verbose = true;
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} else {
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%%io.stderr.printf("Unrecognized argument: '{}'\n", arg);
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return error.ExtraArg;
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}
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}
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for (self.exe_list.toSlice()) |exe| {
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var zig_args = List([]const u8).init(self.allocator);
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defer zig_args.deinit();
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%return zig_args.append("build_exe"[0...]); // TODO issue #296
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%return zig_args.append(exe.root_src);
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if (verbose) {
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%return zig_args.append("--verbose"[0...]); // TODO issue #296
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}
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%return zig_args.append("--name"[0...]); // TODO issue #296
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%return zig_args.append(exe.name);
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switch (exe.target) {
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Target.Native => {},
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Target.Cross => |cross_target| {
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%return zig_args.append("--target-arch"[0...]); // TODO issue #296
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%return zig_args.append(targetArchName(cross_target.arch));
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%return zig_args.append("--target-os"[0...]); // TODO issue #296
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%return zig_args.append(targetOsName(cross_target.os));
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%return zig_args.append("--target-environ"[0...]); // TODO issue #296
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%return zig_args.append(targetEnvironName(cross_target.environ));
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},
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}
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switch (exe.linker_script) {
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LinkerScript.None => {},
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LinkerScript.Embed => |script| {
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const tmp_file_name = "linker.ld.tmp"; // TODO issue #298
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io.writeFile(tmp_file_name, script, self.allocator)
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%% |err| debug.panic("unable to write linker script: {}\n", @errorName(err));
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%return zig_args.append("--linker-script"[0...]); // TODO issue #296
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%return zig_args.append(tmp_file_name[0...]); // TODO issue #296
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},
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LinkerScript.Path => |path| {
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%return zig_args.append("--linker-script"[0...]); // TODO issue #296
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%return zig_args.append(path);
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},
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}
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{
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var it = exe.link_libs.iterator();
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while (true) {
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const entry = it.next() ?? break;
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%return zig_args.append("--library"[0...]); // TODO issue #296
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%return zig_args.append(entry.key);
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}
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}
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for (self.include_paths.toSliceConst()) |include_path| {
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%return zig_args.append("-isystem"[0...]); // TODO issue #296
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%return zig_args.append(include_path);
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}
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for (self.rpaths.toSliceConst()) |rpath| {
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%return zig_args.append("-rpath"[0...]); // TODO issue #296
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%return zig_args.append(rpath);
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}
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for (self.lib_paths.toSliceConst()) |lib_path| {
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%return zig_args.append("--library-path"[0...]); // TODO issue #296
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%return zig_args.append(lib_path);
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}
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// TODO issue #301
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var child = os.ChildProcess.spawn(self.zig_exe, zig_args.toSliceConst(), &env_map,
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StdIo.Ignore, StdIo.Inherit, StdIo.Inherit, self.allocator)
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%% |err| debug.panic("Unable to spawn zig compiler: {}\n", @errorName(err));
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const term = %%child.wait();
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const exe_result = switch (term) {
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Term.Clean => |code| {
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if (code != 0) {
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%%io.stderr.printf("\nCompile failed with code {}. To reproduce:\n", code);
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printInvocation(self.zig_exe, zig_args);
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return error.UncleanExit;
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}
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},
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else => {
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%%io.stderr.printf("\nCompile crashed. To reproduce:\n");
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printInvocation(self.zig_exe, zig_args);
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return error.UncleanExit;
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},
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};
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}
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}
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fn processNixOSEnvVars(self: &Builder) {
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if (const nix_cflags_compile ?= os.getEnv("NIX_CFLAGS_COMPILE")) {
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var it = mem.split(nix_cflags_compile, ' ');
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while (true) {
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const word = it.next() ?? break;
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if (mem.eql(u8, word, "-isystem")) {
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const include_path = it.next() ?? {
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%%io.stderr.printf("Expected argument after -isystem in NIX_CFLAGS_COMPILE\n");
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break;
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};
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self.addCIncludePath(include_path);
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} else {
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%%io.stderr.printf("Unrecognized C flag from NIX_CFLAGS_COMPILE: {}\n", word);
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break;
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}
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}
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}
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if (const nix_ldflags ?= os.getEnv("NIX_LDFLAGS")) {
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var it = mem.split(nix_ldflags, ' ');
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while (true) {
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const word = it.next() ?? break;
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if (mem.eql(u8, word, "-rpath")) {
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const rpath = it.next() ?? {
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%%io.stderr.printf("Expected argument after -rpath in NIX_LDFLAGS\n");
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break;
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};
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self.addRPath(rpath);
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} else if (word.len > 2 and word[0] == '-' and word[1] == 'L') {
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const lib_path = word[2...];
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self.addLibPath(lib_path);
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} else {
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%%io.stderr.printf("Unrecognized C flag from NIX_LDFLAGS: {}\n", word);
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break;
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}
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}
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}
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}
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};
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const CrossTarget = struct {
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arch: Arch,
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os: Os,
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environ: Environ,
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};
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const Target = enum {
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Native,
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Cross: CrossTarget,
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};
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const LinkerScript = enum {
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None,
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Embed: []const u8,
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Path: []const u8,
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};
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const Exe = struct {
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root_src: []const u8,
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name: []const u8,
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target: Target,
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linker_script: LinkerScript,
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link_libs: BufSet,
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fn deinit(self: &Exe) {
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self.link_libs.deinit();
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}
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fn setTarget(self: &Exe, target_arch: Arch, target_os: Os, target_environ: Environ) {
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self.target = Target.Cross {
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CrossTarget {
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.arch = target_arch,
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.os = target_os,
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.environ = target_environ,
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}
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};
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}
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/// Exe keeps a reference to script for its lifetime or until this function
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/// is called again.
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fn setLinkerScriptContents(self: &Exe, script: []const u8) {
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self.linker_script = LinkerScript.Embed { script };
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}
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fn setLinkerScriptPath(self: &Exe, path: []const u8) {
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self.linker_script = LinkerScript.Path { path };
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}
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fn linkLibrary(self: &Exe, name: []const u8) {
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%%self.link_libs.put(name);
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}
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};
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fn handleErr(err: error) -> noreturn {
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debug.panic("error: {}\n", @errorName(err));
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}
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fn printInvocation(exe_name: []const u8, args: &const List([]const u8)) {
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%%io.stderr.printf("{}", exe_name);
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for (args.toSliceConst()) |arg| {
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%%io.stderr.printf(" {}", arg);
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}
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%%io.stderr.printf("\n");
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}
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// TODO issue #299
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fn targetOsName(target_os: Os) -> []const u8 {
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return switch (target_os) {
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Os.freestanding => ([]const u8)("freestanding"),
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Os.cloudabi => ([]const u8)("cloudabi"),
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Os.darwin => ([]const u8)("darwin"),
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Os.dragonfly => ([]const u8)("dragonfly"),
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Os.freebsd => ([]const u8)("freebsd"),
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Os.ios => ([]const u8)("ios"),
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Os.kfreebsd => ([]const u8)("kfreebsd"),
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Os.linux => ([]const u8)("linux"),
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Os.lv2 => ([]const u8)("lv2"),
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Os.macosx => ([]const u8)("macosx"),
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Os.netbsd => ([]const u8)("netbsd"),
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Os.openbsd => ([]const u8)("openbsd"),
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Os.solaris => ([]const u8)("solaris"),
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Os.windows => ([]const u8)("windows"),
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Os.haiku => ([]const u8)("haiku"),
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Os.minix => ([]const u8)("minix"),
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Os.rtems => ([]const u8)("rtems"),
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Os.nacl => ([]const u8)("nacl"),
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Os.cnk => ([]const u8)("cnk"),
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Os.bitrig => ([]const u8)("bitrig"),
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Os.aix => ([]const u8)("aix"),
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Os.cuda => ([]const u8)("cuda"),
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Os.nvcl => ([]const u8)("nvcl"),
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Os.amdhsa => ([]const u8)("amdhsa"),
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Os.ps4 => ([]const u8)("ps4"),
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Os.elfiamcu => ([]const u8)("elfiamcu"),
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Os.tvos => ([]const u8)("tvos"),
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Os.watchos => ([]const u8)("watchos"),
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Os.mesa3d => ([]const u8)("mesa3d"),
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};
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}
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// TODO issue #299
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fn targetArchName(target_arch: Arch) -> []const u8 {
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return switch (target_arch) {
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Arch.armv8_2a => ([]const u8)("armv8_2a"),
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Arch.armv8_1a => ([]const u8)("armv8_1a"),
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Arch.armv8 => ([]const u8)("armv8"),
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Arch.armv8m_baseline => ([]const u8)("armv8m_baseline"),
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Arch.armv8m_mainline => ([]const u8)("armv8m_mainline"),
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Arch.armv7 => ([]const u8)("armv7"),
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Arch.armv7em => ([]const u8)("armv7em"),
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Arch.armv7m => ([]const u8)("armv7m"),
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Arch.armv7s => ([]const u8)("armv7s"),
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Arch.armv7k => ([]const u8)("armv7k"),
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Arch.armv6 => ([]const u8)("armv6"),
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Arch.armv6m => ([]const u8)("armv6m"),
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Arch.armv6k => ([]const u8)("armv6k"),
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Arch.armv6t2 => ([]const u8)("armv6t2"),
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Arch.armv5 => ([]const u8)("armv5"),
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Arch.armv5te => ([]const u8)("armv5te"),
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Arch.armv4t => ([]const u8)("armv4t"),
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Arch.armeb => ([]const u8)("armeb"),
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Arch.aarch64 => ([]const u8)("aarch64"),
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Arch.aarch64_be => ([]const u8)("aarch64_be"),
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Arch.avr => ([]const u8)("avr"),
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Arch.bpfel => ([]const u8)("bpfel"),
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Arch.bpfeb => ([]const u8)("bpfeb"),
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Arch.hexagon => ([]const u8)("hexagon"),
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Arch.mips => ([]const u8)("mips"),
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Arch.mipsel => ([]const u8)("mipsel"),
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Arch.mips64 => ([]const u8)("mips64"),
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Arch.mips64el => ([]const u8)("mips64el"),
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Arch.msp430 => ([]const u8)("msp430"),
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Arch.powerpc => ([]const u8)("powerpc"),
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Arch.powerpc64 => ([]const u8)("powerpc64"),
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Arch.powerpc64le => ([]const u8)("powerpc64le"),
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Arch.r600 => ([]const u8)("r600"),
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Arch.amdgcn => ([]const u8)("amdgcn"),
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Arch.sparc => ([]const u8)("sparc"),
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Arch.sparcv9 => ([]const u8)("sparcv9"),
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Arch.sparcel => ([]const u8)("sparcel"),
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Arch.s390x => ([]const u8)("s390x"),
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Arch.tce => ([]const u8)("tce"),
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Arch.thumb => ([]const u8)("thumb"),
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Arch.thumbeb => ([]const u8)("thumbeb"),
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Arch.i386 => ([]const u8)("i386"),
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Arch.x86_64 => ([]const u8)("x86_64"),
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Arch.xcore => ([]const u8)("xcore"),
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Arch.nvptx => ([]const u8)("nvptx"),
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Arch.nvptx64 => ([]const u8)("nvptx64"),
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Arch.le32 => ([]const u8)("le32"),
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Arch.le64 => ([]const u8)("le64"),
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Arch.amdil => ([]const u8)("amdil"),
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Arch.amdil64 => ([]const u8)("amdil64"),
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Arch.hsail => ([]const u8)("hsail"),
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Arch.hsail64 => ([]const u8)("hsail64"),
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Arch.spir => ([]const u8)("spir"),
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Arch.spir64 => ([]const u8)("spir64"),
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Arch.kalimbav3 => ([]const u8)("kalimbav3"),
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Arch.kalimbav4 => ([]const u8)("kalimbav4"),
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Arch.kalimbav5 => ([]const u8)("kalimbav5"),
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Arch.shave => ([]const u8)("shave"),
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Arch.lanai => ([]const u8)("lanai"),
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Arch.wasm32 => ([]const u8)("wasm32"),
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Arch.wasm64 => ([]const u8)("wasm64"),
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Arch.renderscript32 => ([]const u8)("renderscript32"),
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Arch.renderscript64 => ([]const u8)("renderscript64"),
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};
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}
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// TODO issue #299
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fn targetEnvironName(target_environ: Environ) -> []const u8 {
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return switch (target_environ) {
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Environ.gnu => ([]const u8)("gnu"),
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Environ.gnuabi64 => ([]const u8)("gnuabi64"),
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Environ.gnueabi => ([]const u8)("gnueabi"),
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Environ.gnueabihf => ([]const u8)("gnueabihf"),
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Environ.gnux32 => ([]const u8)("gnux32"),
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Environ.code16 => ([]const u8)("code16"),
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Environ.eabi => ([]const u8)("eabi"),
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Environ.eabihf => ([]const u8)("eabihf"),
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Environ.android => ([]const u8)("android"),
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Environ.musl => ([]const u8)("musl"),
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Environ.musleabi => ([]const u8)("musleabi"),
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Environ.musleabihf => ([]const u8)("musleabihf"),
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Environ.msvc => ([]const u8)("msvc"),
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Environ.itanium => ([]const u8)("itanium"),
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Environ.cygnus => ([]const u8)("cygnus"),
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Environ.amdopencl => ([]const u8)("amdopencl"),
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Environ.coreclr => ([]const u8)("coreclr"),
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};
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}
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