Makefile.in

   1 # Copyright 2012 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.
   4 #
   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.
  10
  11 # <help> \(^o^)/
  12 #
  13 # Greetings, adventurer! The Rust Build System is at your service.
  14 #
  15 # Whether you want a genuine copy of `rustc`, access to the latest and
  16 # most authoritative Rust documentation, or even to investigate the
  17 # most intimate workings of the compiler itself, you've come to the
  18 # right place. Let's see what's on the menu.
  19 #
  20 # First, start with one of these build targets:
  21 #
  22 #   * all - The default. Build a complete, bootstrapped compiler.
  23 #           `rustc` will be in `${target-triple}/stage2/bin/`. Run it
  24 #           directly from the build directory if you like. This also
  25 #           comes with docs in `doc/`.
  26 #
  27 #   * check - Run the complete test suite
  28 #
  29 #   * clean - Clean the build repertory. It is advised to run this
  30 #             command if you want to build Rust again, after an update
  31 #             of the git repository.
  32 #
  33 #   * install - Install Rust. Note that installation is not necessary
  34 #               to use the compiler.
  35 #
  36 #   * uninstall - Uninstall the binaries
  37 #
  38 # For tips on working with The Rust Build System, just:
  39 #
  40 #     run `make tips`
  41 #
  42 # Otherwise
  43 #
  44 #     run `make`
  45 #
  46 # </help>
  47 #
  48 # <tips>
  49 #
  50 # # The Rust Build System Tip Line
  51 #
  52 # There are a bazillion different targets you might want to build. Here
  53 # are a few ideas.
  54 #
  55 #   * docs - Build gobs of HTML documentation and put it into `doc/`
  56 #   * check-$(crate) - Test a crate, e.g. `check-std`
  57 #   * check-ref - Run the language reference tests
  58 #   * check-docs - Test the documentation examples
  59 #   * check-stage$(stage)-$(crate) - Test a crate in a specific stage
  60 #   * check-stage$(stage)-{rpass,rfail,cfail,rmake,...} - Run tests in src/test/
  61 #   * check-stage1-T-$(target)-H-$(host) - Run cross-compiled-tests
  62 #   * tidy-basic - show file / line stats
  63 #   * tidy-errors - show the highest rustc error code
  64 #   * tidy-features - show the status of language and lib features
  65 #
  66 # Then mix in some of these environment variables to harness the
  67 # ultimate power of The Rust Build System.
  68 #
  69 #   * `VERBOSE=1` - Print all commands. Use this to see what's going on.
  70 #   * `RUSTFLAGS=...` - Add compiler flags to all `rustc` invocations
  71 #   * `JEMALLOC_FLAGS=...` - Pass flags to jemalloc's configure script
  72 #
  73 #   * `TESTNAME=...` - Specify the name of tests to run
  74 #   * `CHECK_IGNORED=1` - Run normally-ignored tests
  75 #   * `PLEASE_BENCH=1` - Run crate benchmarks (enable `--bench` flag)
  76 #
  77 #   * `CFG_ENABLE_VALGRIND=1` - Run tests under valgrind
  78 #   * `VALGRIND_COMPILE=1` - Run the compiler itself under valgrind
  79 #                            (requires `CFG_ENABLE_VALGRIND`)
  80 #
  81 #   * `NO_REBUILD=1` - Don't rebootstrap when testing std
  82 #                      (and possibly other crates)
  83 #   * `NO_MKFILE_DEPS=1` - Don't rebuild for modified .mk files
  84 #
  85 #   * `SAVE_TEMPS=1` - Use `--save-temps` flag on all `rustc` invocations
  86 #   * `ASM_COMMENTS=1` - Use `-Z asm-comments`
  87 #   * `TIME_PASSES=1` - Use `-Z time-passes`
  88 #   * `TIME_LLVM_PASSES=1` - Use `-Z time-llvm-passes`
  89 #   * `TRACE=1` - Use `-Z trace`
  90 #
  91 # # Rust recipes for build system success
  92 #
  93 #     // Modifying libstd? Use this comment to run unit tests just on your change
  94 #     make check-stage1-std NO_REBUILD=1 NO_BENCH=1
  95 #
  96 #     // Added a run-pass test? Use this to test running your test
  97 #     make check-stage1-rpass TESTNAME=my-shiny-new-test
  98 #
  99 #     // Having trouble figuring out which test is failing? Turn off parallel tests
 100 #     make check-stage1-std RUST_TEST_THREADS=1
 101 #
 102 # If you really feel like getting your hands dirty, then:
 103 #
 104 #     run `make nitty-gritty`
 105 #
 106 # </tips>
 107 #
 108 # <nitty-gritty>
 109 #
 110 # # The Rust Build System
 111 #
 112 # Gosh I wish there was something useful here (TODO).
 113 #
 114 # # An (old) explanation of how the build is structured:
 115 #
 116 # *Note: Hey, like, this is probably inaccurate, and is definitely
 117 # an outdated and insufficient explanation of the remarkable
 118 # Rust Build System.*
 119 #
 120 # There are multiple build stages (0-3) needed to verify that the
 121 # compiler is properly self-hosting. Each stage is divided between
 122 # 'host' artifacts and 'target' artifacts, where the stageN host
 123 # compiler builds artifacts for 1 or more stageN target architectures.
 124 # Once the stageN target compiler has been built for the host
 125 # architecture it is promoted (copied) to a stageN+1 host artifact.
 126 #
 127 # The stage3 host compiler is a compiler that successfully builds
 128 # itself and should (in theory) be bitwise identical to the stage2
 129 # host compiler. The process is bootstrapped using a stage0 host
 130 # compiler downloaded from a previous snapshot.
 131 #
 132 # At no time should stageN artifacts be interacting with artifacts
 133 # from other stages. For consistency, we use the 'promotion' logic
 134 # for all artifacts, even those that don't make sense on non-host
 135 # architectures.
 136 #
 137 # The directory layout for a stage is intended to match the layout
 138 # of the installed compiler, and looks like the following:
 139 #
 140 # stageN - this is the system root, corresponding to, e.g. /usr
 141 #   bin - binaries compiled for the host
 142 #   lib - libraries used by the host compiler
 143 #     rustlib - rustc's own place to organize libraries
 144 #       $(target) - target-specific artifacts
 145 #         bin - binaries for target architectures
 146 #         lib - libraries for target architectures
 147 #
 148 # A note about host libraries:
 149 #
 150 # The only libraries that get promoted to stageN/lib are those needed
 151 # by rustc. In general, rust programs, even those compiled for the
 152 # host architecture will use libraries from the target
 153 # directories. This gives rust some freedom to experiment with how
 154 # libraries are managed and versioned without polluting the common
 155 # areas of the filesystem.
 156 #
 157 # General rust binaries may still live in the host bin directory; they
 158 # will just link against the libraries in the target lib directory.
 159 #
 160 # Admittedly this is a little convoluted.
 161 #
 162 # If you find yourself working on the make infrastructure itself, and trying to
 163 # find the value of a given variable after expansion, you can use:
 164 #
 165 # make print-VARIABLE_NAME
 166 #
 167 # To extract it
 168 #
 169 # </nitty-gritty>
 170 #
 171
 172 ######################################################################
 173 # Primary rules
 174 ######################################################################
 175
 176 # Issue #9531: If you change the order of any of the following (or add
 177 # new definitions), make sure definitions always precede their uses,
 178 # especially for the dependency lists of recipes.
 179
 180 # First, load the variables exported by the configure script
 181 include config.mk
 182
 183 # Just a few macros used everywhere
 184 include $(CFG_SRC_DIR)mk/util.mk
 185 # Reconfiguring when the makefiles or submodules change
 186 include $(CFG_SRC_DIR)mk/reconfig.mk
 187 # All crates and their dependencies
 188 include $(CFG_SRC_DIR)mk/crates.mk
 189 # Various bits of setup, common macros, and top-level rules
 190 include $(CFG_SRC_DIR)mk/main.mk
 191 # C and assembly components that are not LLVM
 192 include $(CFG_SRC_DIR)mk/rt.mk
 193 # Rules for crates in the target directories
 194 include $(CFG_SRC_DIR)mk/target.mk
 195 # Rules for crates in the host directories
 196 include $(CFG_SRC_DIR)mk/host.mk
 197 # Special rules for bootstrapping stage0
 198 include $(CFG_SRC_DIR)mk/stage0.mk
 199 # Rust-specific LLVM extensions
 200 include $(CFG_SRC_DIR)mk/rustllvm.mk
 201 # Documentation
 202 include $(CFG_SRC_DIR)mk/docs.mk
 203 # LLVM
 204 include $(CFG_SRC_DIR)mk/llvm.mk
 205 # Rules for installing debugger scripts
 206 include $(CFG_SRC_DIR)mk/debuggers.mk
 207
 208 ######################################################################
 209 # Secondary makefiles, conditionalized for speed
 210 ######################################################################
 211
 212 # Binary snapshots
 213 ifneq ($(strip $(findstring snap,$(MAKECMDGOALS))   \
 214                $(findstring clean,$(MAKECMDGOALS))),)
 215   CFG_INFO := $(info cfg: including snap rules)
 216   include $(CFG_SRC_DIR)mk/snap.mk
 217 endif
 218
 219 # The test suite
 220 ifneq ($(strip $(findstring check,$(MAKECMDGOALS)) \
 221                $(findstring test,$(MAKECMDGOALS))  \
 222                $(findstring perf,$(MAKECMDGOALS))  \
 223                $(findstring tidy,$(MAKECMDGOALS))),)
 224   CFG_INFO := $(info cfg: including test rules)
 225   include $(CFG_SRC_DIR)mk/tests.mk
 226   include $(CFG_SRC_DIR)mk/grammar.mk
 227 endif
 228
 229 # Performance and benchmarking
 230 ifneq ($(findstring perf,$(MAKECMDGOALS)),)
 231   CFG_INFO := $(info cfg: including perf rules)
 232   include $(CFG_SRC_DIR)mk/perf.mk
 233 endif
 234
 235 # Copy all the distributables to another directory for binary install
 236 ifneq ($(strip $(findstring prepare,$(MAKECMDGOALS)) \
 237                $(findstring dist,$(MAKECMDGOALS)) \
 238                $(findstring install,$(MAKECMDGOALS))),)
 239   CFG_INFO := $(info cfg: including prepare rules)
 240   include $(CFG_SRC_DIR)mk/prepare.mk
 241 endif
 242
 243 # Source and binary distribution artifacts
 244 ifneq ($(strip $(findstring dist,$(MAKECMDGOALS)) \
 245                $(findstring install,$(MAKECMDGOALS)) \
 246                $(findstring clean,$(MAKECMDGOALS))),)
 247   CFG_INFO := $(info cfg: including dist rules)
 248   include $(CFG_SRC_DIR)mk/dist.mk
 249 endif
 250
 251 # (Unix) Installation from the build directory
 252 ifneq ($(findstring install,$(MAKECMDGOALS)),)
 253   CFG_INFO := $(info cfg: including install rules)
 254   include $(CFG_SRC_DIR)mk/install.mk
 255 endif
 256
 257 # Cleaning
 258 ifneq ($(findstring clean,$(MAKECMDGOALS)),)
 259   CFG_INFO := $(info cfg: including clean rules)
 260   include $(CFG_SRC_DIR)mk/clean.mk
 261 endif
 262
 263 # CTAGS building
 264 ifneq ($(strip $(findstring TAGS.emacs,$(MAKECMDGOALS)) \
 265                $(findstring TAGS.vi,$(MAKECMDGOALS))),)
 266   CFG_INFO := $(info cfg: including ctags rules)
 267   include $(CFG_SRC_DIR)mk/ctags.mk
 268 endif