263 lines
9.5 KiB
Makefile
263 lines
9.5 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 repository. 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-$(host) - Run cross-compiled-tests
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# * tidy-basic - show file / line stats
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# * tidy-errors - show the highest rustc error code
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# * tidy-features - show the status of language and lib features
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# * rustc-stage$(stage) - Only build up to a specific stage
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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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# (requires `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 command 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_THREADS=1
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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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# If you find yourself working on the make infrastructure itself, and trying to
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# find the value of a given variable after expansion, you can use:
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#
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# make print-VARIABLE_NAME
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#
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# To extract it
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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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# Rules for installing debugger scripts
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include $(CFG_SRC_DIR)mk/debuggers.mk
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######################################################################
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# Secondary makefiles, conditionalized for speed
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######################################################################
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# Binary snapshots
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ifneq ($(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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$(findstring tidy,$(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 $(CFG_SRC_DIR)mk/grammar.mk
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endif
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# Copy all the distributables to another directory for binary install
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ifneq ($(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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