1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! Definition of steps of the build system.
13 //! This is where some of the real meat of rustbuild is located, in how we
14 //! define targets and the dependencies amongst them. This file can sort of be
15 //! viewed as just defining targets in a makefile which shell out to predefined
16 //! functions elsewhere about how to execute the target.
18 //! The primary function here you're likely interested in is the `build_rules`
19 //! function. This will create a `Rules` structure which basically just lists
20 //! everything that rustbuild can do. Each rule has a human-readable name, a
21 //! path associated with it, some dependencies, and then a closure of how to
22 //! actually perform the rule.
24 //! All steps below are defined in self-contained units, so adding a new target
25 //! to the build system should just involve adding the meta information here
26 //! along with the actual implementation elsewhere. You can find more comments
27 //! about how to define rules themselves below.
29 use std::collections::{BTreeMap, HashSet};
32 use check::{self, TestKind};
36 use flags::Subcommand;
39 use {Compiler, Build, Mode};
41 pub fn run(build: &Build) {
42 let rules = build_rules(build);
43 let steps = rules.plan();
47 pub fn build_rules<'a>(build: &'a Build) -> Rules {
48 let mut rules = Rules::new(build);
50 // This is the first rule that we're going to define for rustbuild, which is
51 // used to compile LLVM itself. All rules are added through the `rules`
52 // structure created above and are configured through a builder-style
55 // First up we see the `build` method. This represents a rule that's part of
56 // the top-level `build` subcommand. For example `./x.py build` is what this
57 // is associating with. Note that this is normally only relevant if you flag
58 // a rule as `default`, which we'll talk about later.
60 // Next up we'll see two arguments to this method:
62 // * `llvm` - this is the "human readable" name of this target. This name is
63 // not accessed anywhere outside this file itself (e.g. not in
64 // the CLI nor elsewhere in rustbuild). The purpose of this is to
65 // easily define dependencies between rules. That is, other rules
66 // will depend on this with the name "llvm".
67 // * `src/llvm` - this is the relevant path to the rule that we're working
68 // with. This path is the engine behind how commands like
69 // `./x.py build src/llvm` work. This should typically point
70 // to the relevant component, but if there's not really a
71 // path to be assigned here you can pass something like
72 // `path/to/nowhere` to ignore it.
74 // After we create the rule with the `build` method we can then configure
75 // various aspects of it. For example this LLVM rule uses `.host(true)` to
76 // flag that it's a rule only for host targets. In other words, LLVM isn't
77 // compiled for targets configured through `--target` (e.g. those we're just
78 // building a standard library for).
80 // Next up the `dep` method will add a dependency to this rule. The closure
81 // is yielded the step that represents executing the `llvm` rule itself
82 // (containing information like stage, host, target, ...) and then it must
83 // return a target that the step depends on. Here LLVM is actually
84 // interesting where a cross-compiled LLVM depends on the host LLVM, but
85 // otherwise it has no dependencies.
87 // To handle this we do a bit of dynamic dispatch to see what the dependency
88 // is. If we're building a LLVM for the build triple, then we don't actually
89 // have any dependencies! To do that we return a dependency on the `Step::noop()`
90 // target which does nothing.
92 // If we're build a cross-compiled LLVM, however, we need to assemble the
93 // libraries from the previous compiler. This step has the same name as
94 // ours (llvm) but we want it for a different target, so we use the
95 // builder-style methods on `Step` to configure this target to the build
98 // Finally, to finish off this rule, we define how to actually execute it.
99 // That logic is all defined in the `native` module so we just delegate to
100 // the relevant function there. The argument to the closure passed to `run`
101 // is a `Step` (defined below) which encapsulates information like the
102 // stage, target, host, etc.
103 rules.build("llvm", "src/llvm")
106 if s.target == build.config.build {
109 s.target(&build.config.build)
112 .run(move |s| native::llvm(build, s.target));
114 // Ok! After that example rule that's hopefully enough to explain what's
115 // going on here. You can check out the API docs below and also see a bunch
116 // more examples of rules directly below as well.
118 // the compiler with no target libraries ready to go
119 rules.build("rustc", "src/rustc")
120 .dep(|s| s.name("create-sysroot").target(s.host))
126 .host(&build.config.build)
130 .run(move |s| compile::assemble_rustc(build, s.stage, s.target));
132 // Helper for loading an entire DAG of crates, rooted at `name`
133 let krates = |name: &str| {
134 let mut ret = Vec::new();
135 let mut list = vec![name];
136 let mut visited = HashSet::new();
137 while let Some(krate) = list.pop() {
138 let default = krate == name;
139 let krate = &build.crates[krate];
140 let path = krate.path.strip_prefix(&build.src).unwrap();
141 ret.push((krate, path.to_str().unwrap(), default));
142 for dep in krate.deps.iter() {
143 if visited.insert(dep) && dep != "build_helper" {
151 // ========================================================================
152 // Crate compilations
154 // Tools used during the build system but not shipped
155 rules.build("create-sysroot", "path/to/nowhere")
156 .run(move |s| compile::create_sysroot(build, &s.compiler()));
158 // These rules are "pseudo rules" that don't actually do any work
159 // themselves, but represent a complete sysroot with the relevant compiler
160 // linked into place.
162 // That is, depending on "libstd" means that when the rule is completed then
163 // the `stage` sysroot for the compiler `host` will be available with a
164 // standard library built for `target` linked in place. Not all rules need
165 // the compiler itself to be available, just the standard library, so
166 // there's a distinction between the two.
167 rules.build("libstd", "src/libstd")
168 .dep(|s| s.name("rustc").target(s.host))
169 .dep(|s| s.name("libstd-link"));
170 rules.build("libtest", "src/libtest")
171 .dep(|s| s.name("libstd"))
172 .dep(|s| s.name("libtest-link"))
174 rules.build("librustc", "src/librustc")
175 .dep(|s| s.name("libtest"))
176 .dep(|s| s.name("librustc-link"))
180 // Helper method to define the rules to link a crate into its place in the
183 // The logic here is a little subtle as there's a few cases to consider.
184 // Not all combinations of (stage, host, target) actually require something
185 // to be compiled, but rather libraries could get propagated from a
186 // different location. For example:
188 // * Any crate with a `host` that's not the build triple will not actually
189 // compile something. A different `host` means that the build triple will
190 // actually compile the libraries, and then we'll copy them over from the
191 // build triple to the `host` directory.
193 // * Some crates aren't even compiled by the build triple, but may be copied
194 // from previous stages. For example if we're not doing a full bootstrap
195 // then we may just depend on the stage1 versions of libraries to be
196 // available to get linked forward.
198 // * Finally, there are some cases, however, which do indeed comiple crates
199 // and link them into place afterwards.
201 // The rule definition below mirrors these three cases. The `dep` method
202 // calculates the correct dependency which either comes from stage1, a
203 // different compiler, or from actually building the crate itself (the `dep`
204 // rule). The `run` rule then mirrors these three cases and links the cases
205 // forward into the compiler sysroot specified from the correct location.
206 fn crate_rule<'a, 'b>(build: &'a Build,
207 rules: &'b mut Rules<'a>,
210 link: fn(&Build, &Compiler, &Compiler, &str))
211 -> RuleBuilder<'a, 'b> {
212 let mut rule = rules.build(&krate, "path/to/nowhere");
214 if build.force_use_stage1(&s.compiler(), s.target) {
215 s.host(&build.config.build).stage(1)
216 } else if s.host == build.config.build {
219 s.host(&build.config.build)
223 if build.force_use_stage1(&s.compiler(), s.target) {
225 &s.stage(1).host(&build.config.build).compiler(),
228 } else if s.host == build.config.build {
229 link(build, &s.compiler(), &s.compiler(), s.target)
232 &s.host(&build.config.build).compiler(),
240 // Similar to the `libstd`, `libtest`, and `librustc` rules above, except
241 // these rules only represent the libraries being available in the sysroot,
242 // not the compiler itself. This is done as not all rules need a compiler in
243 // the sysroot, but may just need the libraries.
245 // All of these rules use the helper definition above.
251 .dep(|s| s.name("startup-objects"))
252 .dep(|s| s.name("create-sysroot").target(s.host));
258 .dep(|s| s.name("libstd-link"));
262 "build-crate-rustc-main",
264 .dep(|s| s.name("libtest-link"));
266 for (krate, path, _default) in krates("std") {
267 rules.build(&krate.build_step, path)
268 .dep(|s| s.name("startup-objects"))
269 .dep(move |s| s.name("rustc").host(&build.config.build).target(s.host))
270 .run(move |s| compile::std(build, s.target, &s.compiler()));
272 for (krate, path, _default) in krates("test") {
273 rules.build(&krate.build_step, path)
274 .dep(|s| s.name("libstd-link"))
275 .run(move |s| compile::test(build, s.target, &s.compiler()));
277 for (krate, path, _default) in krates("rustc-main") {
278 rules.build(&krate.build_step, path)
279 .dep(|s| s.name("libtest-link"))
280 .dep(move |s| s.name("llvm").host(&build.config.build).stage(0))
281 .dep(|s| s.name("may-run-build-script"))
282 .run(move |s| compile::rustc(build, s.target, &s.compiler()));
285 // Crates which have build scripts need to rely on this rule to ensure that
286 // the necessary prerequisites for a build script are linked and located in
288 rules.build("may-run-build-script", "path/to/nowhere")
290 s.name("libstd-link")
291 .host(&build.config.build)
292 .target(&build.config.build)
294 rules.build("startup-objects", "src/rtstartup")
295 .dep(|s| s.name("create-sysroot").target(s.host))
296 .run(move |s| compile::build_startup_objects(build, &s.compiler(), s.target));
298 // ========================================================================
301 // Various unit tests and tests suites we can run
303 let mut suite = |name, path, mode, dir| {
304 rules.test(name, path)
305 .dep(|s| s.name("libtest"))
306 .dep(|s| s.name("tool-compiletest").target(s.host).stage(0))
307 .dep(|s| s.name("test-helpers"))
308 .dep(|s| s.name("emulator-copy-libs"))
309 .default(mode != "pretty") // pretty tests don't run everywhere
311 check::compiletest(build, &s.compiler(), s.target, mode, dir)
315 suite("check-ui", "src/test/ui", "ui", "ui");
316 suite("check-rpass", "src/test/run-pass", "run-pass", "run-pass");
317 suite("check-cfail", "src/test/compile-fail", "compile-fail", "compile-fail");
318 suite("check-pfail", "src/test/parse-fail", "parse-fail", "parse-fail");
319 suite("check-rfail", "src/test/run-fail", "run-fail", "run-fail");
320 suite("check-rpass-valgrind", "src/test/run-pass-valgrind",
321 "run-pass-valgrind", "run-pass-valgrind");
322 suite("check-mir-opt", "src/test/mir-opt", "mir-opt", "mir-opt");
323 if build.config.codegen_tests {
324 suite("check-codegen", "src/test/codegen", "codegen", "codegen");
326 suite("check-codegen-units", "src/test/codegen-units", "codegen-units",
328 suite("check-incremental", "src/test/incremental", "incremental",
332 if build.config.build.contains("msvc") {
333 // nothing to do for debuginfo tests
335 rules.test("check-debuginfo-lldb", "src/test/debuginfo-lldb")
336 .dep(|s| s.name("libtest"))
337 .dep(|s| s.name("tool-compiletest").target(s.host).stage(0))
338 .dep(|s| s.name("test-helpers"))
339 .dep(|s| s.name("debugger-scripts"))
340 .run(move |s| check::compiletest(build, &s.compiler(), s.target,
341 "debuginfo-lldb", "debuginfo"));
342 rules.test("check-debuginfo-gdb", "src/test/debuginfo-gdb")
343 .dep(|s| s.name("libtest"))
344 .dep(|s| s.name("tool-compiletest").target(s.host).stage(0))
345 .dep(|s| s.name("test-helpers"))
346 .dep(|s| s.name("debugger-scripts"))
347 .dep(|s| s.name("emulator-copy-libs"))
348 .run(move |s| check::compiletest(build, &s.compiler(), s.target,
349 "debuginfo-gdb", "debuginfo"));
350 let mut rule = rules.test("check-debuginfo", "src/test/debuginfo");
352 if build.config.build.contains("apple") {
353 rule.dep(|s| s.name("check-debuginfo-lldb"));
355 rule.dep(|s| s.name("check-debuginfo-gdb"));
359 rules.test("debugger-scripts", "src/etc/lldb_batchmode.py")
360 .run(move |s| dist::debugger_scripts(build, &build.sysroot(&s.compiler()),
364 let mut suite = |name, path, mode, dir| {
365 rules.test(name, path)
366 .dep(|s| s.name("librustc"))
367 .dep(|s| s.name("test-helpers"))
368 .dep(|s| s.name("tool-compiletest").target(s.host).stage(0))
369 .default(mode != "pretty")
372 check::compiletest(build, &s.compiler(), s.target, mode, dir)
376 suite("check-ui-full", "src/test/ui-fulldeps", "ui", "ui-fulldeps");
377 suite("check-rpass-full", "src/test/run-pass-fulldeps",
378 "run-pass", "run-pass-fulldeps");
379 suite("check-rfail-full", "src/test/run-fail-fulldeps",
380 "run-fail", "run-fail-fulldeps");
381 suite("check-cfail-full", "src/test/compile-fail-fulldeps",
382 "compile-fail", "compile-fail-fulldeps");
383 suite("check-rmake", "src/test/run-make", "run-make", "run-make");
384 suite("check-rustdoc", "src/test/rustdoc", "rustdoc", "rustdoc");
385 suite("check-pretty", "src/test/pretty", "pretty", "pretty");
386 suite("check-pretty-rpass", "src/test/run-pass/pretty", "pretty",
388 suite("check-pretty-rfail", "src/test/run-fail/pretty", "pretty",
390 suite("check-pretty-valgrind", "src/test/run-pass-valgrind/pretty", "pretty",
391 "run-pass-valgrind");
392 suite("check-pretty-rpass-full", "src/test/run-pass-fulldeps/pretty",
393 "pretty", "run-pass-fulldeps");
394 suite("check-pretty-rfail-full", "src/test/run-fail-fulldeps/pretty",
395 "pretty", "run-fail-fulldeps");
398 for (krate, path, _default) in krates("std") {
399 rules.test(&krate.test_step, path)
400 .dep(|s| s.name("libtest"))
401 .dep(|s| s.name("emulator-copy-libs"))
402 .run(move |s| check::krate(build, &s.compiler(), s.target,
403 Mode::Libstd, TestKind::Test,
406 rules.test("check-std-all", "path/to/nowhere")
407 .dep(|s| s.name("libtest"))
408 .dep(|s| s.name("emulator-copy-libs"))
410 .run(move |s| check::krate(build, &s.compiler(), s.target,
411 Mode::Libstd, TestKind::Test, None));
414 for (krate, path, _default) in krates("std") {
415 rules.bench(&krate.bench_step, path)
416 .dep(|s| s.name("libtest"))
417 .dep(|s| s.name("emulator-copy-libs"))
418 .run(move |s| check::krate(build, &s.compiler(), s.target,
419 Mode::Libstd, TestKind::Bench,
422 rules.bench("bench-std-all", "path/to/nowhere")
423 .dep(|s| s.name("libtest"))
424 .dep(|s| s.name("emulator-copy-libs"))
426 .run(move |s| check::krate(build, &s.compiler(), s.target,
427 Mode::Libstd, TestKind::Bench, None));
429 for (krate, path, _default) in krates("test") {
430 rules.test(&krate.test_step, path)
431 .dep(|s| s.name("libtest"))
432 .dep(|s| s.name("emulator-copy-libs"))
433 .run(move |s| check::krate(build, &s.compiler(), s.target,
434 Mode::Libtest, TestKind::Test,
437 rules.test("check-test-all", "path/to/nowhere")
438 .dep(|s| s.name("libtest"))
439 .dep(|s| s.name("emulator-copy-libs"))
441 .run(move |s| check::krate(build, &s.compiler(), s.target,
442 Mode::Libtest, TestKind::Test, None));
443 for (krate, path, _default) in krates("rustc-main") {
444 rules.test(&krate.test_step, path)
445 .dep(|s| s.name("librustc"))
446 .dep(|s| s.name("emulator-copy-libs"))
448 .run(move |s| check::krate(build, &s.compiler(), s.target,
449 Mode::Librustc, TestKind::Test,
452 rules.test("check-rustc-all", "path/to/nowhere")
453 .dep(|s| s.name("librustc"))
454 .dep(|s| s.name("emulator-copy-libs"))
457 .run(move |s| check::krate(build, &s.compiler(), s.target,
458 Mode::Librustc, TestKind::Test, None));
460 rules.test("check-linkchecker", "src/tools/linkchecker")
461 .dep(|s| s.name("tool-linkchecker").stage(0))
462 .dep(|s| s.name("default:doc"))
465 .run(move |s| check::linkcheck(build, s.target));
466 rules.test("check-cargotest", "src/tools/cargotest")
467 .dep(|s| s.name("tool-cargotest").stage(0))
468 .dep(|s| s.name("librustc"))
470 .run(move |s| check::cargotest(build, s.stage, s.target));
471 rules.test("check-tidy", "src/tools/tidy")
472 .dep(|s| s.name("tool-tidy").stage(0))
476 .run(move |s| check::tidy(build, s.target));
477 rules.test("check-error-index", "src/tools/error_index_generator")
478 .dep(|s| s.name("libstd"))
479 .dep(|s| s.name("tool-error-index").host(s.host).stage(0))
482 .run(move |s| check::error_index(build, &s.compiler()));
483 rules.test("check-docs", "src/doc")
484 .dep(|s| s.name("libtest"))
487 .run(move |s| check::docs(build, &s.compiler()));
488 rules.test("check-distcheck", "distcheck")
489 .dep(|s| s.name("dist-src"))
490 .run(move |_| check::distcheck(build));
492 rules.build("test-helpers", "src/rt/rust_test_helpers.c")
493 .run(move |s| native::test_helpers(build, s.target));
494 rules.build("openssl", "path/to/nowhere")
495 .run(move |s| native::openssl(build, s.target));
497 // Some test suites are run inside emulators, and most of our test binaries
498 // are linked dynamically which means we need to ship the standard library
499 // and such to the emulator ahead of time. This step represents this and is
500 // a dependency of all test suites.
502 // Most of the time this step is a noop (the `check::emulator_copy_libs`
503 // only does work if necessary). For some steps such as shipping data to
504 // QEMU we have to build our own tools so we've got conditional dependencies
505 // on those programs as well. Note that the QEMU client is built for the
506 // build target (us) and the server is built for the target.
507 rules.test("emulator-copy-libs", "path/to/nowhere")
508 .dep(|s| s.name("libtest"))
510 if build.qemu_rootfs(s.target).is_some() {
511 s.name("tool-qemu-test-client").target(s.host).stage(0)
517 if build.qemu_rootfs(s.target).is_some() {
518 s.name("tool-qemu-test-server")
523 .run(move |s| check::emulator_copy_libs(build, &s.compiler(), s.target));
525 rules.test("check-bootstrap", "src/bootstrap")
529 .run(move |_| check::bootstrap(build));
531 // ========================================================================
534 // Tools used during the build system but not shipped
535 rules.build("tool-rustbook", "src/tools/rustbook")
536 .dep(|s| s.name("librustc"))
537 .run(move |s| compile::tool(build, s.stage, s.target, "rustbook"));
538 rules.build("tool-error-index", "src/tools/error_index_generator")
539 .dep(|s| s.name("librustc"))
540 .run(move |s| compile::tool(build, s.stage, s.target, "error_index_generator"));
541 rules.build("tool-tidy", "src/tools/tidy")
542 .dep(|s| s.name("libstd"))
543 .run(move |s| compile::tool(build, s.stage, s.target, "tidy"));
544 rules.build("tool-linkchecker", "src/tools/linkchecker")
545 .dep(|s| s.name("libstd"))
546 .run(move |s| compile::tool(build, s.stage, s.target, "linkchecker"));
547 rules.build("tool-cargotest", "src/tools/cargotest")
548 .dep(|s| s.name("libstd"))
549 .run(move |s| compile::tool(build, s.stage, s.target, "cargotest"));
550 rules.build("tool-compiletest", "src/tools/compiletest")
551 .dep(|s| s.name("libtest"))
552 .run(move |s| compile::tool(build, s.stage, s.target, "compiletest"));
553 rules.build("tool-build-manifest", "src/tools/build-manifest")
554 .dep(|s| s.name("libstd"))
555 .run(move |s| compile::tool(build, s.stage, s.target, "build-manifest"));
556 rules.build("tool-qemu-test-server", "src/tools/qemu-test-server")
557 .dep(|s| s.name("libstd"))
558 .run(move |s| compile::tool(build, s.stage, s.target, "qemu-test-server"));
559 rules.build("tool-qemu-test-client", "src/tools/qemu-test-client")
560 .dep(|s| s.name("libstd"))
561 .run(move |s| compile::tool(build, s.stage, s.target, "qemu-test-client"));
562 rules.build("tool-cargo", "cargo")
563 .dep(|s| s.name("libstd"))
564 .dep(|s| s.stage(0).host(s.target).name("openssl"))
566 // Cargo depends on procedural macros, which requires a full host
567 // compiler to be available, so we need to depend on that.
568 s.name("librustc-link")
569 .target(&build.config.build)
570 .host(&build.config.build)
572 .run(move |s| compile::tool(build, s.stage, s.target, "cargo"));
573 rules.build("tool-rls", "rls")
575 .dep(|s| s.name("libstd"))
576 .run(move |s| compile::tool(build, s.stage, s.target, "rls"));
578 // ========================================================================
579 // Documentation targets
580 rules.doc("doc-book", "src/doc/book")
582 s.name("tool-rustbook")
583 .host(&build.config.build)
584 .target(&build.config.build)
587 .default(build.config.docs)
588 .run(move |s| doc::book(build, s.target, "book"));
589 rules.doc("doc-nomicon", "src/doc/nomicon")
591 s.name("tool-rustbook")
592 .host(&build.config.build)
593 .target(&build.config.build)
596 .default(build.config.docs)
597 .run(move |s| doc::rustbook(build, s.target, "nomicon"));
598 rules.doc("doc-reference", "src/doc/reference")
600 s.name("tool-rustbook")
601 .host(&build.config.build)
602 .target(&build.config.build)
605 .default(build.config.docs)
606 .run(move |s| doc::rustbook(build, s.target, "reference"));
607 rules.doc("doc-unstable-book", "src/doc/unstable-book")
609 s.name("tool-rustbook")
610 .host(&build.config.build)
611 .target(&build.config.build)
614 .default(build.config.docs)
615 .run(move |s| doc::rustbook(build, s.target, "unstable-book"));
616 rules.doc("doc-standalone", "src/doc")
619 .host(&build.config.build)
620 .target(&build.config.build)
623 .default(build.config.docs)
624 .run(move |s| doc::standalone(build, s.target));
625 rules.doc("doc-error-index", "src/tools/error_index_generator")
626 .dep(move |s| s.name("tool-error-index").target(&build.config.build).stage(0))
627 .dep(move |s| s.name("librustc-link"))
628 .default(build.config.docs)
630 .run(move |s| doc::error_index(build, s.target));
631 for (krate, path, default) in krates("std") {
632 rules.doc(&krate.doc_step, path)
633 .dep(|s| s.name("libstd-link"))
634 .default(default && build.config.docs)
635 .run(move |s| doc::std(build, s.stage, s.target));
637 for (krate, path, default) in krates("test") {
638 rules.doc(&krate.doc_step, path)
639 .dep(|s| s.name("libtest-link"))
640 // Needed so rustdoc generates relative links to std.
641 .dep(|s| s.name("doc-crate-std"))
642 .default(default && build.config.compiler_docs)
643 .run(move |s| doc::test(build, s.stage, s.target));
645 for (krate, path, default) in krates("rustc-main") {
646 rules.doc(&krate.doc_step, path)
647 .dep(|s| s.name("librustc-link"))
648 // Needed so rustdoc generates relative links to std.
649 .dep(|s| s.name("doc-crate-std"))
651 .default(default && build.config.docs)
652 .run(move |s| doc::rustc(build, s.stage, s.target));
655 // ========================================================================
656 // Distribution targets
657 rules.dist("dist-rustc", "src/librustc")
658 .dep(move |s| s.name("rustc").host(&build.config.build))
660 .only_host_build(true)
662 .run(move |s| dist::rustc(build, s.stage, s.target));
663 rules.dist("dist-std", "src/libstd")
665 // We want to package up as many target libraries as possible
666 // for the `rust-std` package, so if this is a host target we
667 // depend on librustc and otherwise we just depend on libtest.
668 if build.config.host.iter().any(|t| t == s.target) {
669 s.name("librustc-link")
671 s.name("libtest-link")
675 .only_host_build(true)
676 .run(move |s| dist::std(build, &s.compiler(), s.target));
677 rules.dist("dist-mingw", "path/to/nowhere")
679 .only_host_build(true)
681 if s.target.contains("pc-windows-gnu") {
682 dist::mingw(build, s.target)
685 rules.dist("dist-src", "src")
689 .only_host_build(true)
690 .run(move |_| dist::rust_src(build));
691 rules.dist("dist-docs", "src/doc")
693 .only_host_build(true)
694 .dep(|s| s.name("default:doc"))
695 .run(move |s| dist::docs(build, s.stage, s.target));
696 rules.dist("dist-analysis", "analysis")
697 .dep(|s| s.name("dist-std"))
699 .only_host_build(true)
700 .run(move |s| dist::analysis(build, &s.compiler(), s.target));
701 rules.dist("dist-rls", "rls")
703 .only_host_build(true)
704 .dep(|s| s.name("tool-rls"))
705 .run(move |s| dist::rls(build, s.stage, s.target));
706 rules.dist("install", "path/to/nowhere")
707 .dep(|s| s.name("default:dist"))
708 .run(move |s| install::install(build, s.stage, s.target));
709 rules.dist("dist-cargo", "cargo")
711 .only_host_build(true)
712 .dep(|s| s.name("tool-cargo"))
713 .run(move |s| dist::cargo(build, s.stage, s.target));
714 rules.dist("dist-extended", "extended")
715 .default(build.config.extended)
717 .only_host_build(true)
718 .dep(|d| d.name("dist-std"))
719 .dep(|d| d.name("dist-rustc"))
720 .dep(|d| d.name("dist-mingw"))
721 .dep(|d| d.name("dist-docs"))
722 .dep(|d| d.name("dist-cargo"))
723 .dep(|d| d.name("dist-rls"))
724 .dep(|d| d.name("dist-analysis"))
725 .run(move |s| dist::extended(build, s.stage, s.target));
727 rules.dist("dist-sign", "hash-and-sign")
730 .only_host_build(true)
731 .dep(move |s| s.name("tool-build-manifest").target(&build.config.build).stage(0))
732 .run(move |_| dist::hash_and_sign(build));
738 #[derive(PartialEq, Eq, Hash, Clone, Debug)]
740 /// Human readable name of the rule this step is executing. Possible names
741 /// are all defined above in `build_rules`.
744 /// The stage this step is executing in. This is typically 0, 1, or 2.
747 /// This step will likely involve a compiler, and the target that compiler
748 /// itself is built for is called the host, this variable. Typically this is
749 /// the target of the build machine itself.
752 /// The target that this step represents generating. If you're building a
753 /// standard library for a new suite of targets, for example, this'll be set
754 /// to those targets.
759 fn noop() -> Step<'a> {
760 Step { name: "", stage: 0, host: "", target: "" }
763 /// Creates a new step which is the same as this, except has a new name.
764 fn name(&self, name: &'a str) -> Step<'a> {
765 Step { name: name, ..*self }
768 /// Creates a new step which is the same as this, except has a new stage.
769 fn stage(&self, stage: u32) -> Step<'a> {
770 Step { stage: stage, ..*self }
773 /// Creates a new step which is the same as this, except has a new host.
774 fn host(&self, host: &'a str) -> Step<'a> {
775 Step { host: host, ..*self }
778 /// Creates a new step which is the same as this, except has a new target.
779 fn target(&self, target: &'a str) -> Step<'a> {
780 Step { target: target, ..*self }
783 /// Returns the `Compiler` structure that this step corresponds to.
784 fn compiler(&self) -> Compiler<'a> {
785 Compiler::new(self.stage, self.host)
790 /// The human readable name of this target, defined in `build_rules`.
793 /// The path associated with this target, used in the `./x.py` driver for
794 /// easy and ergonomic specification of what to do.
797 /// The "kind" of top-level command that this rule is associated with, only
798 /// relevant if this is a default rule.
801 /// List of dependencies this rule has. Each dependency is a function from a
802 /// step that's being executed to another step that should be executed.
803 deps: Vec<Box<Fn(&Step<'a>) -> Step<'a> + 'a>>,
805 /// How to actually execute this rule. Takes a step with contextual
806 /// information and then executes it.
807 run: Box<Fn(&Step<'a>) + 'a>,
809 /// Whether or not this is a "default" rule. That basically means that if
810 /// you run, for example, `./x.py test` whether it's included or not.
813 /// Whether or not this is a "host" rule, or in other words whether this is
814 /// only intended for compiler hosts and not for targets that are being
818 /// Whether this rule is only for steps where the host is the build triple,
819 /// not anything in hosts or targets.
820 only_host_build: bool,
822 /// Whether this rule is only for the build triple, not anything in hosts or
837 fn new(name: &'a str, path: &'a str, kind: Kind) -> Rule<'a> {
841 run: Box::new(|_| ()),
846 only_host_build: false,
852 /// Builder pattern returned from the various methods on `Rules` which will add
853 /// the rule to the internal list on `Drop`.
854 struct RuleBuilder<'a: 'b, 'b> {
855 rules: &'b mut Rules<'a>,
859 impl<'a, 'b> RuleBuilder<'a, 'b> {
860 fn dep<F>(&mut self, f: F) -> &mut Self
861 where F: Fn(&Step<'a>) -> Step<'a> + 'a,
863 self.rule.deps.push(Box::new(f));
867 fn run<F>(&mut self, f: F) -> &mut Self
868 where F: Fn(&Step<'a>) + 'a,
870 self.rule.run = Box::new(f);
874 fn default(&mut self, default: bool) -> &mut Self {
875 self.rule.default = default;
879 fn host(&mut self, host: bool) -> &mut Self {
880 self.rule.host = host;
884 fn only_build(&mut self, only_build: bool) -> &mut Self {
885 self.rule.only_build = only_build;
889 fn only_host_build(&mut self, only_host_build: bool) -> &mut Self {
890 self.rule.only_host_build = only_host_build;
895 impl<'a, 'b> Drop for RuleBuilder<'a, 'b> {
897 let rule = mem::replace(&mut self.rule, Rule::new("", "", Kind::Build));
898 let prev = self.rules.rules.insert(rule.name, rule);
899 if let Some(prev) = prev {
900 panic!("duplicate rule named: {}", prev.name);
905 pub struct Rules<'a> {
908 rules: BTreeMap<&'a str, Rule<'a>>,
912 fn new(build: &'a Build) -> Rules<'a> {
916 stage: build.flags.stage.unwrap_or(2),
917 target: &build.config.build,
918 host: &build.config.build,
921 rules: BTreeMap::new(),
925 /// Creates a new rule of `Kind::Build` with the specified human readable
926 /// name and path associated with it.
928 /// The builder returned should be configured further with information such
929 /// as how to actually run this rule.
930 fn build<'b>(&'b mut self, name: &'a str, path: &'a str)
931 -> RuleBuilder<'a, 'b> {
932 self.rule(name, path, Kind::Build)
935 /// Same as `build`, but for `Kind::Test`.
936 fn test<'b>(&'b mut self, name: &'a str, path: &'a str)
937 -> RuleBuilder<'a, 'b> {
938 self.rule(name, path, Kind::Test)
941 /// Same as `build`, but for `Kind::Bench`.
942 fn bench<'b>(&'b mut self, name: &'a str, path: &'a str)
943 -> RuleBuilder<'a, 'b> {
944 self.rule(name, path, Kind::Bench)
947 /// Same as `build`, but for `Kind::Doc`.
948 fn doc<'b>(&'b mut self, name: &'a str, path: &'a str)
949 -> RuleBuilder<'a, 'b> {
950 self.rule(name, path, Kind::Doc)
953 /// Same as `build`, but for `Kind::Dist`.
954 fn dist<'b>(&'b mut self, name: &'a str, path: &'a str)
955 -> RuleBuilder<'a, 'b> {
956 self.rule(name, path, Kind::Dist)
959 fn rule<'b>(&'b mut self,
962 kind: Kind) -> RuleBuilder<'a, 'b> {
965 rule: Rule::new(name, path, kind),
969 /// Verify the dependency graph defined by all our rules are correct, e.g.
970 /// everything points to a valid something else.
972 for rule in self.rules.values() {
973 for dep in rule.deps.iter() {
974 let dep = dep(&self.sbuild.name(rule.name));
975 if self.rules.contains_key(&dep.name) || dep.name.starts_with("default:") {
978 if dep == Step::noop() {
983 invalid rule dependency graph detected, was a rule added and maybe typo'd?
985 `{}` depends on `{}` which does not exist
987 ", rule.name, dep.name);
992 pub fn get_help(&self, command: &str) -> Option<String> {
993 let kind = match command {
994 "build" => Kind::Build,
996 "test" => Kind::Test,
997 "bench" => Kind::Bench,
998 "dist" => Kind::Dist,
1001 let rules = self.rules.values().filter(|r| r.kind == kind);
1002 let rules = rules.filter(|r| !r.path.contains("nowhere"));
1003 let mut rules = rules.collect::<Vec<_>>();
1004 rules.sort_by_key(|r| r.path);
1006 let mut help_string = String::from("Available paths:\n");
1008 help_string.push_str(format!(" ./x.py {} {}\n", command, rule.path).as_str());
1013 /// Construct the top-level build steps that we're going to be executing,
1014 /// given the subcommand that our build is performing.
1015 fn plan(&self) -> Vec<Step<'a>> {
1016 // Ok, the logic here is pretty subtle, and involves quite a few
1017 // conditionals. The basic idea here is to:
1019 // 1. First, filter all our rules to the relevant ones. This means that
1020 // the command specified corresponds to one of our `Kind` variants,
1021 // and we filter all rules based on that.
1023 // 2. Next, we determine which rules we're actually executing. If a
1024 // number of path filters were specified on the command line we look
1025 // for those, otherwise we look for anything tagged `default`.
1026 // Here we also compute the priority of each rule based on how early
1027 // in the command line the matching path filter showed up.
1029 // 3. Finally, we generate some steps with host and target information.
1031 // The last step is by far the most complicated and subtle. The basic
1032 // thinking here is that we want to take the cartesian product of
1033 // specified hosts and targets and build rules with that. The list of
1034 // hosts and targets, if not specified, come from the how this build was
1035 // configured. If the rule we're looking at is a host-only rule the we
1036 // ignore the list of targets and instead consider the list of hosts
1037 // also the list of targets.
1039 // Once the host and target lists are generated we take the cartesian
1040 // product of the two and then create a step based off them. Note that
1041 // the stage each step is associated was specified with the `--step`
1042 // flag on the command line.
1043 let (kind, paths) = match self.build.flags.cmd {
1044 Subcommand::Build { ref paths } => (Kind::Build, &paths[..]),
1045 Subcommand::Doc { ref paths } => (Kind::Doc, &paths[..]),
1046 Subcommand::Test { ref paths, test_args: _ } => (Kind::Test, &paths[..]),
1047 Subcommand::Bench { ref paths, test_args: _ } => (Kind::Bench, &paths[..]),
1048 Subcommand::Dist { ref paths, install } => {
1050 return vec![self.sbuild.name("install")]
1052 (Kind::Dist, &paths[..])
1055 Subcommand::Clean => panic!(),
1058 let mut rules: Vec<_> = self.rules.values().filter_map(|rule| {
1059 if rule.kind != kind {
1063 if paths.len() == 0 && rule.default {
1066 paths.iter().position(|path| path.ends_with(rule.path))
1067 .map(|priority| (rule, priority))
1071 rules.sort_by_key(|&(_, priority)| priority);
1073 rules.into_iter().flat_map(|(rule, _)| {
1074 let hosts = if rule.only_host_build || rule.only_build {
1075 &self.build.config.host[..1]
1076 } else if self.build.flags.host.len() > 0 {
1077 &self.build.flags.host
1079 &self.build.config.host
1081 let targets = if self.build.flags.target.len() > 0 {
1082 &self.build.flags.target
1084 &self.build.config.target
1086 // Determine the actual targets participating in this rule.
1087 // NOTE: We should keep the full projection from build triple to
1088 // the hosts for the dist steps, now that the hosts array above is
1089 // truncated to avoid duplication of work in that case. Therefore
1090 // the original non-shadowed hosts array is used below.
1091 let arr = if rule.host {
1092 // If --target was specified but --host wasn't specified,
1093 // don't run any host-only tests. Also, respect any `--host`
1094 // overrides as done for `hosts`.
1095 if self.build.flags.host.len() > 0 {
1096 &self.build.flags.host[..]
1097 } else if self.build.flags.target.len() > 0 {
1099 } else if rule.only_build {
1100 &self.build.config.host[..1]
1102 &self.build.config.host[..]
1108 hosts.iter().flat_map(move |host| {
1109 arr.iter().map(move |target| {
1110 self.sbuild.name(rule.name).target(target).host(host)
1116 /// Execute all top-level targets indicated by `steps`.
1118 /// This will take the list returned by `plan` and then execute each step
1119 /// along with all required dependencies as it goes up the chain.
1120 fn run(&self, steps: &[Step<'a>]) {
1121 self.build.verbose("bootstrap top targets:");
1122 for step in steps.iter() {
1123 self.build.verbose(&format!("\t{:?}", step));
1126 // Using `steps` as the top-level targets, make a topological ordering
1127 // of what we need to do.
1128 let order = self.expand(steps);
1130 // Print out what we're doing for debugging
1131 self.build.verbose("bootstrap build plan:");
1132 for step in order.iter() {
1133 self.build.verbose(&format!("\t{:?}", step));
1136 // And finally, iterate over everything and execute it.
1137 for step in order.iter() {
1138 if self.build.flags.keep_stage.map_or(false, |s| step.stage <= s) {
1139 self.build.verbose(&format!("keeping step {:?}", step));
1142 self.build.verbose(&format!("executing step {:?}", step));
1143 (self.rules[step.name].run)(step);
1147 /// From the top level targets `steps` generate a topological ordering of
1148 /// all steps needed to run those steps.
1149 fn expand(&self, steps: &[Step<'a>]) -> Vec<Step<'a>> {
1150 let mut order = Vec::new();
1151 let mut added = HashSet::new();
1152 added.insert(Step::noop());
1153 for step in steps.iter().cloned() {
1154 self.fill(step, &mut order, &mut added);
1159 /// Performs topological sort of dependencies rooted at the `step`
1160 /// specified, pushing all results onto the `order` vector provided.
1162 /// In other words, when this method returns, the `order` vector will
1163 /// contain a list of steps which if executed in order will eventually
1164 /// complete the `step` specified as well.
1166 /// The `added` set specified here is the set of steps that are already
1167 /// present in `order` (and hence don't need to be added again).
1170 order: &mut Vec<Step<'a>>,
1171 added: &mut HashSet<Step<'a>>) {
1172 if !added.insert(step.clone()) {
1175 for dep in self.rules[step.name].deps.iter() {
1176 let dep = dep(&step);
1177 if dep.name.starts_with("default:") {
1178 let kind = match &dep.name[8..] {
1180 "dist" => Kind::Dist,
1181 kind => panic!("unknown kind: `{}`", kind),
1183 let host = self.build.config.host.iter().any(|h| h == dep.target);
1184 let rules = self.rules.values().filter(|r| r.default);
1185 for rule in rules.filter(|r| r.kind == kind && (!r.host || host)) {
1186 self.fill(dep.name(rule.name), order, added);
1189 self.fill(dep, order, added);
1205 ($($a:expr),*) => (vec![$($a.to_string()),*])
1208 fn build(args: &[&str],
1209 extra_host: &[&str],
1210 extra_target: &[&str]) -> Build {
1211 let mut args = args.iter().map(|s| s.to_string()).collect::<Vec<_>>();
1212 args.push("--build".to_string());
1213 args.push("A".to_string());
1214 let flags = Flags::parse(&args);
1216 let mut config = Config::default();
1218 config.build = "A".to_string();
1219 config.host = vec![config.build.clone()];
1220 config.host.extend(extra_host.iter().map(|s| s.to_string()));
1221 config.target = config.host.clone();
1222 config.target.extend(extra_target.iter().map(|s| s.to_string()));
1224 let mut build = Build::new(flags, config);
1225 let cwd = env::current_dir().unwrap();
1226 build.crates.insert("std".to_string(), ::Crate {
1227 name: "std".to_string(),
1229 path: cwd.join("src/std"),
1230 doc_step: "doc-crate-std".to_string(),
1231 build_step: "build-crate-std".to_string(),
1232 test_step: "test-crate-std".to_string(),
1233 bench_step: "bench-crate-std".to_string(),
1234 version: String::new(),
1236 build.crates.insert("test".to_string(), ::Crate {
1237 name: "test".to_string(),
1239 path: cwd.join("src/test"),
1240 doc_step: "doc-crate-test".to_string(),
1241 build_step: "build-crate-test".to_string(),
1242 test_step: "test-crate-test".to_string(),
1243 bench_step: "bench-crate-test".to_string(),
1244 version: String::new(),
1246 build.crates.insert("rustc-main".to_string(), ::Crate {
1247 name: "rustc-main".to_string(),
1249 version: String::new(),
1250 path: cwd.join("src/rustc-main"),
1251 doc_step: "doc-crate-rustc-main".to_string(),
1252 build_step: "build-crate-rustc-main".to_string(),
1253 test_step: "test-crate-rustc-main".to_string(),
1254 bench_step: "bench-crate-rustc-main".to_string(),
1260 fn dist_baseline() {
1261 let build = build(&["dist"], &[], &[]);
1262 let rules = super::build_rules(&build);
1263 let plan = rules.plan();
1264 println!("rules: {:#?}", plan);
1265 assert!(plan.iter().all(|s| s.stage == 2));
1266 assert!(plan.iter().all(|s| s.host == "A" ));
1267 assert!(plan.iter().all(|s| s.target == "A" ));
1269 let step = super::Step {
1272 host: &build.config.build,
1273 target: &build.config.build,
1276 assert!(plan.contains(&step.name("dist-docs")));
1277 assert!(plan.contains(&step.name("dist-mingw")));
1278 assert!(plan.contains(&step.name("dist-rustc")));
1279 assert!(plan.contains(&step.name("dist-std")));
1280 assert!(plan.contains(&step.name("dist-src")));
1284 fn dist_with_targets() {
1285 let build = build(&["dist"], &[], &["B"]);
1286 let rules = super::build_rules(&build);
1287 let plan = rules.plan();
1288 println!("rules: {:#?}", plan);
1289 assert!(plan.iter().all(|s| s.stage == 2));
1290 assert!(plan.iter().all(|s| s.host == "A" ));
1292 let step = super::Step {
1295 host: &build.config.build,
1296 target: &build.config.build,
1299 assert!(plan.contains(&step.name("dist-docs")));
1300 assert!(plan.contains(&step.name("dist-mingw")));
1301 assert!(plan.contains(&step.name("dist-rustc")));
1302 assert!(plan.contains(&step.name("dist-std")));
1303 assert!(plan.contains(&step.name("dist-src")));
1305 assert!(plan.contains(&step.target("B").name("dist-docs")));
1306 assert!(plan.contains(&step.target("B").name("dist-mingw")));
1307 assert!(!plan.contains(&step.target("B").name("dist-rustc")));
1308 assert!(plan.contains(&step.target("B").name("dist-std")));
1309 assert!(!plan.contains(&step.target("B").name("dist-src")));
1313 fn dist_with_hosts() {
1314 let build = build(&["dist"], &["B"], &[]);
1315 let rules = super::build_rules(&build);
1316 let plan = rules.plan();
1317 println!("rules: {:#?}", plan);
1318 assert!(plan.iter().all(|s| s.stage == 2));
1320 let step = super::Step {
1323 host: &build.config.build,
1324 target: &build.config.build,
1327 assert!(!plan.iter().any(|s| s.host == "B"));
1329 assert!(plan.contains(&step.name("dist-docs")));
1330 assert!(plan.contains(&step.name("dist-mingw")));
1331 assert!(plan.contains(&step.name("dist-rustc")));
1332 assert!(plan.contains(&step.name("dist-std")));
1333 assert!(plan.contains(&step.name("dist-src")));
1335 assert!(plan.contains(&step.target("B").name("dist-docs")));
1336 assert!(plan.contains(&step.target("B").name("dist-mingw")));
1337 assert!(plan.contains(&step.target("B").name("dist-rustc")));
1338 assert!(plan.contains(&step.target("B").name("dist-std")));
1339 assert!(!plan.contains(&step.target("B").name("dist-src")));
1343 fn dist_with_targets_and_hosts() {
1344 let build = build(&["dist"], &["B"], &["C"]);
1345 let rules = super::build_rules(&build);
1346 let plan = rules.plan();
1347 println!("rules: {:#?}", plan);
1348 assert!(plan.iter().all(|s| s.stage == 2));
1350 let step = super::Step {
1353 host: &build.config.build,
1354 target: &build.config.build,
1357 assert!(!plan.iter().any(|s| s.host == "B"));
1358 assert!(!plan.iter().any(|s| s.host == "C"));
1360 assert!(plan.contains(&step.name("dist-docs")));
1361 assert!(plan.contains(&step.name("dist-mingw")));
1362 assert!(plan.contains(&step.name("dist-rustc")));
1363 assert!(plan.contains(&step.name("dist-std")));
1364 assert!(plan.contains(&step.name("dist-src")));
1366 assert!(plan.contains(&step.target("B").name("dist-docs")));
1367 assert!(plan.contains(&step.target("B").name("dist-mingw")));
1368 assert!(plan.contains(&step.target("B").name("dist-rustc")));
1369 assert!(plan.contains(&step.target("B").name("dist-std")));
1370 assert!(!plan.contains(&step.target("B").name("dist-src")));
1372 assert!(plan.contains(&step.target("C").name("dist-docs")));
1373 assert!(plan.contains(&step.target("C").name("dist-mingw")));
1374 assert!(!plan.contains(&step.target("C").name("dist-rustc")));
1375 assert!(plan.contains(&step.target("C").name("dist-std")));
1376 assert!(!plan.contains(&step.target("C").name("dist-src")));
1380 fn dist_target_with_target_flag() {
1381 let build = build(&["dist", "--target=C"], &["B"], &["C"]);
1382 let rules = super::build_rules(&build);
1383 let plan = rules.plan();
1384 println!("rules: {:#?}", plan);
1385 assert!(plan.iter().all(|s| s.stage == 2));
1387 let step = super::Step {
1390 host: &build.config.build,
1391 target: &build.config.build,
1394 assert!(!plan.iter().any(|s| s.target == "A"));
1395 assert!(!plan.iter().any(|s| s.target == "B"));
1396 assert!(!plan.iter().any(|s| s.host == "B"));
1397 assert!(!plan.iter().any(|s| s.host == "C"));
1399 assert!(plan.contains(&step.target("C").name("dist-docs")));
1400 assert!(plan.contains(&step.target("C").name("dist-mingw")));
1401 assert!(!plan.contains(&step.target("C").name("dist-rustc")));
1402 assert!(plan.contains(&step.target("C").name("dist-std")));
1403 assert!(!plan.contains(&step.target("C").name("dist-src")));
1407 fn dist_host_with_target_flag() {
1408 let build = build(&["dist", "--host=B", "--target=B"], &["B"], &["C"]);
1409 let rules = super::build_rules(&build);
1410 let plan = rules.plan();
1411 println!("rules: {:#?}", plan);
1412 assert!(plan.iter().all(|s| s.stage == 2));
1414 let step = super::Step {
1417 host: &build.config.build,
1418 target: &build.config.build,
1421 assert!(!plan.iter().any(|s| s.target == "A"));
1422 assert!(!plan.iter().any(|s| s.target == "C"));
1423 assert!(!plan.iter().any(|s| s.host == "B"));
1424 assert!(!plan.iter().any(|s| s.host == "C"));
1426 assert!(plan.contains(&step.target("B").name("dist-docs")));
1427 assert!(plan.contains(&step.target("B").name("dist-mingw")));
1428 assert!(plan.contains(&step.target("B").name("dist-rustc")));
1429 assert!(plan.contains(&step.target("B").name("dist-std")));
1430 assert!(plan.contains(&step.target("B").name("dist-src")));
1432 let all = rules.expand(&plan);
1433 println!("all rules: {:#?}", all);
1434 assert!(!all.contains(&step.name("rustc")));
1435 assert!(!all.contains(&step.name("build-crate-test").stage(1)));
1437 // all stage0 compiles should be for the build target, A
1438 for step in all.iter().filter(|s| s.stage == 0) {
1439 if !step.name.contains("build-crate") {
1442 println!("step: {:?}", step);
1443 assert!(step.host != "B");
1444 assert!(step.target != "B");
1445 assert!(step.host != "C");
1446 assert!(step.target != "C");
1451 fn build_default() {
1452 let build = build(&["build"], &["B"], &["C"]);
1453 let rules = super::build_rules(&build);
1454 let plan = rules.plan();
1455 println!("rules: {:#?}", plan);
1456 assert!(plan.iter().all(|s| s.stage == 2));
1458 let step = super::Step {
1461 host: &build.config.build,
1462 target: &build.config.build,
1465 // rustc built for all for of (A, B) x (A, B)
1466 assert!(plan.contains(&step.name("librustc")));
1467 assert!(plan.contains(&step.target("B").name("librustc")));
1468 assert!(plan.contains(&step.host("B").target("A").name("librustc")));
1469 assert!(plan.contains(&step.host("B").target("B").name("librustc")));
1471 // rustc never built for C
1472 assert!(!plan.iter().any(|s| {
1473 s.name.contains("rustc") && (s.host == "C" || s.target == "C")
1476 // test built for everything
1477 assert!(plan.contains(&step.name("libtest")));
1478 assert!(plan.contains(&step.target("B").name("libtest")));
1479 assert!(plan.contains(&step.host("B").target("A").name("libtest")));
1480 assert!(plan.contains(&step.host("B").target("B").name("libtest")));
1481 assert!(plan.contains(&step.host("A").target("C").name("libtest")));
1482 assert!(plan.contains(&step.host("B").target("C").name("libtest")));
1484 let all = rules.expand(&plan);
1485 println!("all rules: {:#?}", all);
1486 assert!(all.contains(&step.name("rustc")));
1487 assert!(all.contains(&step.name("libstd")));
1491 fn build_filtered() {
1492 let build = build(&["build", "--target=C"], &["B"], &["C"]);
1493 let rules = super::build_rules(&build);
1494 let plan = rules.plan();
1495 println!("rules: {:#?}", plan);
1496 assert!(plan.iter().all(|s| s.stage == 2));
1498 assert!(!plan.iter().any(|s| s.name.contains("rustc")));
1499 assert!(plan.iter().all(|s| {
1500 !s.name.contains("test") || s.target == "C"
1506 let build = build(&["test"], &[], &[]);
1507 let rules = super::build_rules(&build);
1508 let plan = rules.plan();
1509 println!("rules: {:#?}", plan);
1510 assert!(plan.iter().all(|s| s.stage == 2));
1511 assert!(plan.iter().all(|s| s.host == "A"));
1512 assert!(plan.iter().all(|s| s.target == "A"));
1514 assert!(plan.iter().any(|s| s.name.contains("-ui")));
1515 assert!(plan.iter().any(|s| s.name.contains("cfail")));
1516 assert!(plan.iter().any(|s| s.name.contains("cfail-full")));
1517 assert!(plan.iter().any(|s| s.name.contains("codegen-units")));
1518 assert!(plan.iter().any(|s| s.name.contains("debuginfo")));
1519 assert!(plan.iter().any(|s| s.name.contains("docs")));
1520 assert!(plan.iter().any(|s| s.name.contains("error-index")));
1521 assert!(plan.iter().any(|s| s.name.contains("incremental")));
1522 assert!(plan.iter().any(|s| s.name.contains("linkchecker")));
1523 assert!(plan.iter().any(|s| s.name.contains("mir-opt")));
1524 assert!(plan.iter().any(|s| s.name.contains("pfail")));
1525 assert!(plan.iter().any(|s| s.name.contains("rfail")));
1526 assert!(plan.iter().any(|s| s.name.contains("rfail-full")));
1527 assert!(plan.iter().any(|s| s.name.contains("rmake")));
1528 assert!(plan.iter().any(|s| s.name.contains("rpass")));
1529 assert!(plan.iter().any(|s| s.name.contains("rpass-full")));
1530 assert!(plan.iter().any(|s| s.name.contains("rustc-all")));
1531 assert!(plan.iter().any(|s| s.name.contains("rustdoc")));
1532 assert!(plan.iter().any(|s| s.name.contains("std-all")));
1533 assert!(plan.iter().any(|s| s.name.contains("test-all")));
1534 assert!(plan.iter().any(|s| s.name.contains("tidy")));
1535 assert!(plan.iter().any(|s| s.name.contains("valgrind")));
1539 fn test_with_a_target() {
1540 let build = build(&["test", "--target=C"], &[], &["C"]);
1541 let rules = super::build_rules(&build);
1542 let plan = rules.plan();
1543 println!("rules: {:#?}", plan);
1544 assert!(plan.iter().all(|s| s.stage == 2));
1545 assert!(plan.iter().all(|s| s.host == "A"));
1546 assert!(plan.iter().all(|s| s.target == "C"));
1548 assert!(plan.iter().any(|s| s.name.contains("-ui")));
1549 assert!(!plan.iter().any(|s| s.name.contains("ui-full")));
1550 assert!(plan.iter().any(|s| s.name.contains("cfail")));
1551 assert!(!plan.iter().any(|s| s.name.contains("cfail-full")));
1552 assert!(plan.iter().any(|s| s.name.contains("codegen-units")));
1553 assert!(plan.iter().any(|s| s.name.contains("debuginfo")));
1554 assert!(!plan.iter().any(|s| s.name.contains("docs")));
1555 assert!(!plan.iter().any(|s| s.name.contains("error-index")));
1556 assert!(plan.iter().any(|s| s.name.contains("incremental")));
1557 assert!(!plan.iter().any(|s| s.name.contains("linkchecker")));
1558 assert!(plan.iter().any(|s| s.name.contains("mir-opt")));
1559 assert!(plan.iter().any(|s| s.name.contains("pfail")));
1560 assert!(plan.iter().any(|s| s.name.contains("rfail")));
1561 assert!(!plan.iter().any(|s| s.name.contains("rfail-full")));
1562 assert!(!plan.iter().any(|s| s.name.contains("rmake")));
1563 assert!(plan.iter().any(|s| s.name.contains("rpass")));
1564 assert!(!plan.iter().any(|s| s.name.contains("rpass-full")));
1565 assert!(!plan.iter().any(|s| s.name.contains("rustc-all")));
1566 assert!(!plan.iter().any(|s| s.name.contains("rustdoc")));
1567 assert!(plan.iter().any(|s| s.name.contains("std-all")));
1568 assert!(plan.iter().any(|s| s.name.contains("test-all")));
1569 assert!(!plan.iter().any(|s| s.name.contains("tidy")));
1570 assert!(plan.iter().any(|s| s.name.contains("valgrind")));