1ee099da36
The performance hit from these checks is significant, but unoptimized builds are already incredibly slow. Enabling these checks results in better test coverage since there are bots doing unoptimized builds, and the cost is relatively small in the context of an unoptimized build. This also allows using `JEMALLOC_FLAGS` to override the default configure flags.
267 lines
9.6 KiB
Makefile
267 lines
9.6 KiB
Makefile
# Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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# file at the top-level directory of this distribution and at
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# http://rust-lang.org/COPYRIGHT.
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#
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# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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# option. This file may not be copied, modified, or distributed
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# except according to those terms.
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# <help> \(^o^)/
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#
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# Greetings, adventurer! The Rust Build System is at your service.
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#
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# Whether you want a genuine copy of `rustc`, access to the latest and
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# most authoritative Rust documentation, or even to investigate the
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# most intimate workings of the compiler itself, you've come to the
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# right place. Let's see what's on the menu.
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#
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# First, start with one of these build targets:
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#
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# * all - The default. Build a complete, bootstrapped compiler.
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# `rustc` will be in `${target-triple}/stage2/bin/`. Run it
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# directly from the build directory if you like. This also
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# comes with docs in `doc/`.
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#
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# * check - Run the complete test suite
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#
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# * clean - Clean the build repertory. It is advised to run this
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# command if you want to build Rust again, after an update
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# of the git repository.
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#
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# * install - Install Rust. Note that installation is not necessary
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# to use the compiler.
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#
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# * uninstall - Uninstall the binaries
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#
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# For tips on working with The Rust Build System, just:
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#
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# run `make tips`
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#
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# Otherwise
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#
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# run `make`
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#
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# </help>
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#
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# <tips>
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#
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# # The Rust Build System Tip Line
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#
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# There are a bazillion different targets you might want to build. Here
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# are a few ideas.
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#
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# * docs - Build gobs of HTML documentation and put it into `doc/`
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# * check-$(crate) - Test a crate, e.g. `check-std`
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# * check-ref - Run the language reference tests
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# * check-docs - Test the documentation examples
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# * check-stage$(stage)-$(crate) - Test a crate in a specific stage
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# * check-stage$(stage)-{rpass,rfail,cfail,rmake,...} - Run tests in src/test/
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# * check-stage1-T-$(target)-H-$(host) - Run cross-compiled-tests
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#
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# Then mix in some of these environment variables to harness the
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# ultimate power of The Rust Build System.
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#
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# * `VERBOSE=1` - Print all commands. Use this to see what's going on.
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# * `RUSTFLAGS=...` - Add compiler flags to all `rustc` invocations
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# * `JEMALLOC_FLAGS=...` - Pass flags to jemalloc's configure script
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#
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# * `TESTNAME=...` - Specify the name of tests to run
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# * `CHECK_IGNORED=1` - Run normally-ignored tests
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# * `PLEASE_BENCH=1` - Run crate benchmarks (enable `--bench` flag)
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#
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# * `CFG_ENABLE_VALGRIND=1` - Run tests under valgrind
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# * `VALGRIND_COMPILE=1` - Run the compiler itself under valgrind
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# (may require `CFG_ENABLE_VALGRIND`)
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#
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# * `NO_REBUILD=1` - Don't rebootstrap when testing std
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# (and possibly other crates)
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# * `NO_MKFILE_DEPS=1` - Don't rebuild for modified .mk files
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#
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# * `SAVE_TEMPS=1` - Use `--save-temps` flag on all `rustc` invocations
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# * `ASM_COMMENTS=1` - Use `-Z asm-comments`
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# * `TIME_PASSES=1` - Use `-Z time-passes`
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# * `TIME_LLVM_PASSES=1` - Use `-Z time-llvm-passes`
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# * `TRACE=1` - Use `-Z trace`
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#
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# # Rust recipes for build system success
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#
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# // Modifying libstd? Use this comment to run unit tests just on your change
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# make check-stage1-std NO_REBUILD=1 NO_BENCH=1
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#
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# // Added a run-pass test? Use this to test running your test
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# make check-stage1-rpass TESTNAME=my-shiny-new-test
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#
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# // Having trouble figuring out which test is failing? Turn off parallel tests
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# make check-stage1-std RUST_TEST_TASKS=1
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#
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# This is hardly all there is to know of The Rust Build System's
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# mysteries. The tale continues on the wiki[1][2].
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#
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# [1]: https://github.com/rust-lang/rust/wiki/Note-build-system
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# [2]: https://github.com/rust-lang/rust/wiki/Note-testsuite
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#
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# If you really feel like getting your hands dirty, then:
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#
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# run `make nitty-gritty`
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#
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# </tips>
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#
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# <nitty-gritty>
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#
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# # The Rust Build System
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#
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# Gosh I wish there was something useful here (TODO).
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#
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# # An (old) explanation of how the build is structured:
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#
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# *Note: Hey, like, this is probably inaccurate, and is definitely
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# an outdated and insufficient explanation of the remarkable
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# Rust Build System.*
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#
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# There are multiple build stages (0-3) needed to verify that the
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# compiler is properly self-hosting. Each stage is divided between
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# 'host' artifacts and 'target' artifacts, where the stageN host
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# compiler builds artifacts for 1 or more stageN target architectures.
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# Once the stageN target compiler has been built for the host
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# architecture it is promoted (copied) to a stageN+1 host artifact.
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#
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# The stage3 host compiler is a compiler that successfully builds
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# itself and should (in theory) be bitwise identical to the stage2
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# host compiler. The process is bootstrapped using a stage0 host
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# compiler downloaded from a previous snapshot.
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#
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# At no time should stageN artifacts be interacting with artifacts
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# from other stages. For consistency, we use the 'promotion' logic
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# for all artifacts, even those that don't make sense on non-host
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# architectures.
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#
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# The directory layout for a stage is intended to match the layout
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# of the installed compiler, and looks like the following:
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#
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# stageN - this is the system root, corresponding to, e.g. /usr
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# bin - binaries compiled for the host
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# lib - libraries used by the host compiler
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# rustlib - rustc's own place to organize libraries
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# $(target) - target-specific artifacts
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# bin - binaries for target architectures
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# lib - libraries for target architectures
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#
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# A note about host libraries:
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#
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# The only libraries that get promoted to stageN/lib are those needed
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# by rustc. In general, rust programs, even those compiled for the
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# host architecture will use libraries from the target
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# directories. This gives rust some freedom to experiment with how
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# libraries are managed and versioned without polluting the common
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# areas of the filesystem.
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#
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# General rust binaries may still live in the host bin directory; they
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# will just link against the libraries in the target lib directory.
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#
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# Admittedly this is a little convoluted.
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#
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# </nitty-gritty>
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#
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######################################################################
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# Primary rules
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######################################################################
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# Issue #9531: If you change the order of any of the following (or add
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# new definitions), make sure definitions always precede their uses,
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# especially for the dependency lists of recipes.
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# First, load the variables exported by the configure script
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include config.mk
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# Just a few macros used everywhere
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include $(CFG_SRC_DIR)mk/util.mk
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# Reconfiguring when the makefiles or submodules change
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include $(CFG_SRC_DIR)mk/reconfig.mk
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# All crates and their dependencies
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include $(CFG_SRC_DIR)mk/crates.mk
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# Various bits of setup, common macros, and top-level rules
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include $(CFG_SRC_DIR)mk/main.mk
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# C and assembly components that are not LLVM
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include $(CFG_SRC_DIR)mk/rt.mk
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# Rules for crates in the target directories
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include $(CFG_SRC_DIR)mk/target.mk
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# Rules for crates in the host directories
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include $(CFG_SRC_DIR)mk/host.mk
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# Special rules for bootstrapping stage0
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include $(CFG_SRC_DIR)mk/stage0.mk
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# Rust-specific LLVM extensions
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include $(CFG_SRC_DIR)mk/rustllvm.mk
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# Documentation
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include $(CFG_SRC_DIR)mk/docs.mk
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# LLVM
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include $(CFG_SRC_DIR)mk/llvm.mk
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######################################################################
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# Secondary makefiles, conditionalized for speed
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######################################################################
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# Binary snapshots
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ifneq ($(strip $(findstring snap,$(MAKECMDGOALS)) \
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$(findstring clean,$(MAKECMDGOALS))),)
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CFG_INFO := $(info cfg: including snap rules)
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include $(CFG_SRC_DIR)mk/snap.mk
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endif
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# The test suite
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ifneq ($(strip $(findstring check,$(MAKECMDGOALS)) \
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$(findstring test,$(MAKECMDGOALS)) \
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$(findstring perf,$(MAKECMDGOALS)) \
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$(findstring tidy,$(MAKECMDGOALS))),)
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CFG_INFO := $(info cfg: including test rules)
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include $(CFG_SRC_DIR)mk/tests.mk
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include $(CFG_SRC_DIR)mk/grammar.mk
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endif
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# Performance and benchmarking
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ifneq ($(findstring perf,$(MAKECMDGOALS)),)
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CFG_INFO := $(info cfg: including perf rules)
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include $(CFG_SRC_DIR)mk/perf.mk
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endif
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# Copy all the distributables to another directory for binary install
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ifneq ($(strip $(findstring prepare,$(MAKECMDGOALS)) \
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$(findstring dist,$(MAKECMDGOALS)) \
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$(findstring install,$(MAKECMDGOALS))),)
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CFG_INFO := $(info cfg: including prepare rules)
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include $(CFG_SRC_DIR)mk/prepare.mk
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endif
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# Source and binary distribution artifacts
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ifneq ($(strip $(findstring dist,$(MAKECMDGOALS)) \
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$(findstring install,$(MAKECMDGOALS)) \
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$(findstring clean,$(MAKECMDGOALS))),)
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CFG_INFO := $(info cfg: including dist rules)
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include $(CFG_SRC_DIR)mk/dist.mk
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endif
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# (Unix) Installation from the build directory
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ifneq ($(findstring install,$(MAKECMDGOALS)),)
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CFG_INFO := $(info cfg: including install rules)
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include $(CFG_SRC_DIR)mk/install.mk
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endif
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# Cleaning
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ifneq ($(findstring clean,$(MAKECMDGOALS)),)
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CFG_INFO := $(info cfg: including clean rules)
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include $(CFG_SRC_DIR)mk/clean.mk
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endif
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# CTAGS building
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ifneq ($(strip $(findstring TAGS.emacs,$(MAKECMDGOALS)) \
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$(findstring TAGS.vi,$(MAKECMDGOALS))),)
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CFG_INFO := $(info cfg: including ctags rules)
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include $(CFG_SRC_DIR)mk/ctags.mk
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endif
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# Find all of the .d files and include them to add information about
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# header file dependencies.
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ALL_DEP_FILES := $(ALL_OBJ_FILES:%.o=%.d)
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-include $(ALL_DEP_FILES)
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