mk/main.mk

   1 # Copyright 2014-2015 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 ######################################################################
  12 # Version numbers and strings
  13 ######################################################################
  14
  15 # The version number
  16 CFG_RELEASE_NUM=1.12.0
  17
  18 # An optional number to put after the label, e.g. '.2' -> '-beta.2'
  19 # NB Make sure it starts with a dot to conform to semver pre-release
  20 # versions (section 9)
  21 CFG_PRERELEASE_VERSION=.6
  22
  23 ifeq ($(CFG_RELEASE_CHANNEL),stable)
  24 # This is the normal semver version string, e.g. "0.12.0", "0.12.0-nightly"
  25 CFG_RELEASE=$(CFG_RELEASE_NUM)
  26 # This is the string used in dist artifact file names, e.g. "0.12.0", "nightly"
  27 CFG_PACKAGE_VERS=$(CFG_RELEASE_NUM)
  28 CFG_DISABLE_UNSTABLE_FEATURES=1
  29 endif
  30 ifeq ($(CFG_RELEASE_CHANNEL),beta)
  31 CFG_RELEASE=$(CFG_RELEASE_NUM)-beta$(CFG_PRERELEASE_VERSION)
  32 # When building beta distributables just reuse the same "beta" name
  33 # so when we upload we'll always override the previous beta. This
  34 # doesn't actually impact the version reported by rustc - it's just
  35 # for file naming.
  36 CFG_PACKAGE_VERS=beta
  37 CFG_DISABLE_UNSTABLE_FEATURES=1
  38 endif
  39 ifeq ($(CFG_RELEASE_CHANNEL),nightly)
  40 CFG_RELEASE=$(CFG_RELEASE_NUM)-nightly
  41 # When building nightly distributables just reuse the same "nightly" name
  42 # so when we upload we'll always override the previous nighly. This
  43 # doesn't actually impact the version reported by rustc - it's just
  44 # for file naming.
  45 CFG_PACKAGE_VERS=nightly
  46 endif
  47 ifeq ($(CFG_RELEASE_CHANNEL),dev)
  48 CFG_RELEASE=$(CFG_RELEASE_NUM)-dev
  49 CFG_PACKAGE_VERS=$(CFG_RELEASE_NUM)-dev
  50 endif
  51
  52 # Append a version-dependent hash to each library, so we can install different
  53 # versions in the same place
  54 CFG_FILENAME_EXTRA=$(shell printf '%s' $(CFG_RELEASE)$(CFG_EXTRA_FILENAME) | $(CFG_HASH_COMMAND))
  55
  56 # A magic value that allows the compiler to use unstable features during the
  57 # bootstrap even when doing so would normally be an error because of feature
  58 # staging or because the build turns on warnings-as-errors and unstable features
  59 # default to warnings. The build has to match this key in an env var.
  60 #
  61 # This value is keyed off the release to ensure that all compilers for one
  62 # particular release have the same bootstrap key. Note that this is
  63 # intentionally not "secure" by any definition, this is largely just a deterrent
  64 # from users enabling unstable features on the stable compiler.
  65 CFG_BOOTSTRAP_KEY=$(CFG_FILENAME_EXTRA)
  66
  67 # If local-rust is the same as the current version, then force a local-rebuild
  68 ifdef CFG_ENABLE_LOCAL_RUST
  69 ifeq ($(CFG_RELEASE),\
  70       $(shell $(S)src/etc/local_stage0.sh --print-rustc-release $(CFG_LOCAL_RUST_ROOT)))
  71     CFG_INFO := $(info cfg: auto-detected local-rebuild $(CFG_RELEASE))
  72     CFG_ENABLE_LOCAL_REBUILD = 1
  73 endif
  74 endif
  75
  76 # The stage0 compiler needs to use the previous key recorded in src/stage0.txt,
  77 # except for local-rebuild when it just uses the same current key.
  78 ifdef CFG_ENABLE_LOCAL_REBUILD
  79 CFG_BOOTSTRAP_KEY_STAGE0=$(CFG_BOOTSTRAP_KEY)
  80 else
  81 CFG_BOOTSTRAP_KEY_STAGE0=$(shell sed -ne 's/^rustc_key: //p' $(S)src/stage0.txt)
  82 endif
  83
  84 # The name of the package to use for creating tarballs, installers etc.
  85 CFG_PACKAGE_NAME=rustc-$(CFG_PACKAGE_VERS)
  86
  87 # The version string plus commit information - this is what rustc reports
  88 CFG_VERSION = $(CFG_RELEASE)
  89 CFG_GIT_DIR := $(CFG_SRC_DIR).git
  90 # since $(CFG_GIT) may contain spaces (especially on Windows),
  91 # we need to escape them. (" " to r"\ ")
  92 # Note that $(subst ...) ignores space after `subst`,
  93 # so we use a hack: define $(SPACE) which contains space character.
  94 SPACE :=
  95 SPACE +=
  96 ifneq ($(CFG_GIT),)
  97 ifneq ($(wildcard $(subst $(SPACE),\$(SPACE),$(CFG_GIT_DIR))),)
  98     CFG_VER_DATE = $(shell git --git-dir='$(CFG_GIT_DIR)' log -1 --date=short --pretty=format:'%cd')
  99     CFG_VER_HASH = $(shell git --git-dir='$(CFG_GIT_DIR)' rev-parse HEAD)
 100     CFG_SHORT_VER_HASH = $(shell git --git-dir='$(CFG_GIT_DIR)' rev-parse --short=9 HEAD)
 101     CFG_VERSION += ($(CFG_SHORT_VER_HASH) $(CFG_VER_DATE))
 102 endif
 103 endif
 104
 105 # Windows exe's need numeric versions - don't use anything but
 106 # numbers and dots here
 107 CFG_VERSION_WIN = $(CFG_RELEASE_NUM)
 108
 109 CFG_INFO := $(info cfg: version $(CFG_VERSION))
 110
 111 ######################################################################
 112 # More configuration
 113 ######################################################################
 114
 115 MKFILE_DEPS := config.stamp $(call rwildcard,$(CFG_SRC_DIR)mk/,*)
 116 MKFILES_FOR_TARBALL:=$(MKFILE_DEPS)
 117 ifneq ($(NO_MKFILE_DEPS),)
 118 MKFILE_DEPS :=
 119 endif
 120 NON_BUILD_HOST = $(filter-out $(CFG_BUILD),$(CFG_HOST))
 121 NON_BUILD_TARGET = $(filter-out $(CFG_BUILD),$(CFG_TARGET))
 122
 123 ifneq ($(MAKE_RESTARTS),)
 124 CFG_INFO := $(info cfg: make restarts: $(MAKE_RESTARTS))
 125 endif
 126
 127 CFG_INFO := $(info cfg: build triple $(CFG_BUILD))
 128 CFG_INFO := $(info cfg: host triples $(CFG_HOST))
 129 CFG_INFO := $(info cfg: target triples $(CFG_TARGET))
 130
 131 ifneq ($(wildcard $(NON_BUILD_HOST)),)
 132 CFG_INFO := $(info cfg: non-build host triples $(NON_BUILD_HOST))
 133 endif
 134 ifneq ($(wildcard $(NON_BUILD_TARGET)),)
 135 CFG_INFO := $(info cfg: non-build target triples $(NON_BUILD_TARGET))
 136 endif
 137
 138 CFG_RUSTC_FLAGS := $(RUSTFLAGS)
 139 CFG_GCCISH_CFLAGS :=
 140 CFG_GCCISH_LINK_FLAGS :=
 141
 142 CFG_JEMALLOC_FLAGS :=
 143
 144 ifdef CFG_DISABLE_OPTIMIZE
 145   $(info cfg: disabling rustc optimization (CFG_DISABLE_OPTIMIZE))
 146   CFG_RUSTC_FLAGS +=
 147   CFG_JEMALLOC_FLAGS += --enable-debug
 148 else
 149   # The rtopt cfg turns off runtime sanity checks
 150   CFG_RUSTC_FLAGS += -O --cfg rtopt
 151 endif
 152
 153 CFG_JEMALLOC_FLAGS += $(JEMALLOC_FLAGS)
 154
 155 ifdef CFG_ENABLE_DEBUG_ASSERTIONS
 156   $(info cfg: enabling debug assertions (CFG_ENABLE_DEBUG_ASSERTIONS))
 157   CFG_RUSTC_FLAGS += -C debug-assertions=on
 158 endif
 159
 160 ifdef CFG_ENABLE_DEBUGINFO
 161   $(info cfg: enabling debuginfo (CFG_ENABLE_DEBUGINFO))
 162   CFG_RUSTC_FLAGS += -g
 163 endif
 164
 165 ifdef CFG_DISABLE_ORBIT
 166   $(info cfg: HOLD HOLD HOLD (CFG_DISABLE_ORBIT))
 167   RUSTFLAGS_STAGE1 += -Z orbit=off
 168   RUSTFLAGS_STAGE2 += -Z orbit=off
 169 endif
 170
 171 ifdef SAVE_TEMPS
 172   CFG_RUSTC_FLAGS += -C save-temps
 173 endif
 174 ifdef ASM_COMMENTS
 175   CFG_RUSTC_FLAGS += -Z asm-comments
 176 endif
 177 ifdef TIME_PASSES
 178   CFG_RUSTC_FLAGS += -Z time-passes
 179 endif
 180 ifdef TIME_LLVM_PASSES
 181   CFG_RUSTC_FLAGS += -Z time-llvm-passes
 182 endif
 183 ifdef TRACE
 184   CFG_RUSTC_FLAGS += -Z trace
 185 endif
 186 ifndef CFG_DISABLE_RPATH
 187 CFG_RUSTC_FLAGS += -C rpath
 188 endif
 189
 190 # The executables crated during this compilation process have no need to include
 191 # static copies of libstd and libextra. We also generate dynamic versions of all
 192 # libraries, so in the interest of space, prefer dynamic linking throughout the
 193 # compilation process.
 194 #
 195 # Note though that these flags are omitted for the *bins* in stage2+. This means
 196 # that the snapshot will be generated with a statically linked rustc so we only
 197 # have to worry about the distribution of one file (with its native dynamic
 198 # dependencies)
 199 RUSTFLAGS_STAGE0 += -C prefer-dynamic -C no-stack-check
 200 RUSTFLAGS_STAGE1 += -C prefer-dynamic
 201 RUST_LIB_FLAGS_ST2 += -C prefer-dynamic
 202 RUST_LIB_FLAGS_ST3 += -C prefer-dynamic
 203
 204 # Landing pads require a lot of codegen. We can get through bootstrapping faster
 205 # by not emitting them.
 206
 207 ifdef CFG_DISABLE_STAGE0_LANDING_PADS
 208   RUSTFLAGS_STAGE0 += -Z no-landing-pads
 209 endif
 210
 211 # platform-specific auto-configuration
 212 include $(CFG_SRC_DIR)mk/platform.mk
 213
 214 # Run the stage1/2 compilers under valgrind
 215 ifdef VALGRIND_COMPILE
 216   CFG_VALGRIND_COMPILE := $(CFG_VALGRIND)
 217 else
 218   CFG_VALGRIND_COMPILE :=
 219 endif
 220
 221
 222 ifndef CFG_DISABLE_VALGRIND_RPASS
 223   $(info cfg: enabling valgrind run-pass tests (CFG_ENABLE_VALGRIND_RPASS))
 224   $(info cfg: valgrind-rpass command set to $(CFG_VALGRIND))
 225   CFG_VALGRIND_RPASS :=$(CFG_VALGRIND)
 226 else
 227   $(info cfg: disabling valgrind run-pass tests)
 228   CFG_VALGRIND_RPASS :=
 229 endif
 230
 231
 232 ifdef CFG_ENABLE_VALGRIND
 233   $(info cfg: enabling valgrind (CFG_ENABLE_VALGRIND))
 234   CFG_JEMALLOC_FLAGS += --enable-valgrind
 235 else
 236   CFG_VALGRIND :=
 237 endif
 238
 239 ######################################################################
 240 # Target-and-rule "utility variables"
 241 ######################################################################
 242
 243 define DEF_FOR_TARGET
 244 X_$(1) := $(CFG_EXE_SUFFIX_$(1))
 245 ifndef CFG_LLVM_TARGET_$(1)
 246 CFG_LLVM_TARGET_$(1) := $(1)
 247 endif
 248 endef
 249 $(foreach target,$(CFG_TARGET), \
 250   $(eval $(call DEF_FOR_TARGET,$(target))))
 251
 252 # "Source" files we generate in builddir along the way.
 253 GENERATED :=
 254
 255 # Delete the built-in rules.
 256 .SUFFIXES:
 257 %:: %,v
 258 %:: RCS/%,v
 259 %:: RCS/%
 260 %:: s.%
 261 %:: SCCS/s.%
 262
 263
 264 ######################################################################
 265 # Cleaning out old crates
 266 ######################################################################
 267
 268 # $(1) is the path for directory to match against
 269 # $(2) is the glob to use in the match
 270 #
 271 # Note that a common bug is to accidentally construct the glob denoted
 272 # by $(2) with a space character prefix, which invalidates the
 273 # construction $(1)$(2).
 274 define CHECK_FOR_OLD_GLOB_MATCHES
 275   $(Q)MATCHES="$(wildcard $(1))"; if [ -n "$$MATCHES" ] ; then echo "warning: there are previous" \'$(notdir $(2))\' "libraries:" $$MATCHES; fi
 276 endef
 277
 278 # Same interface as above, but deletes rather than just listing the files.
 279 ifdef VERBOSE
 280 define REMOVE_ALL_OLD_GLOB_MATCHES
 281   $(Q)MATCHES="$(wildcard $(1))"; if [ -n "$$MATCHES" ] ; then echo "warning: removing previous" \'$(notdir $(1))\' "libraries:" $$MATCHES; rm $$MATCHES ; fi
 282 endef
 283 else
 284 define REMOVE_ALL_OLD_GLOB_MATCHES
 285   $(Q)MATCHES="$(wildcard $(1))"; if [ -n "$$MATCHES" ] ; then rm $$MATCHES ; fi
 286 endef
 287 endif
 288
 289 # We use a different strategy for LIST_ALL_OLD_GLOB_MATCHES_EXCEPT
 290 # than in the macros above because it needs the result of running the
 291 # `ls` command after other rules in the command list have run; the
 292 # macro-expander for $(wildcard ...) would deliver its results too
 293 # soon. (This is in contrast to the macros above, which are meant to
 294 # be run at the outset of a command list in a rule.)
 295 ifdef VERBOSE
 296 define LIST_ALL_OLD_GLOB_MATCHES
 297   @echo "info: now are following matches for" '$(notdir $(1))' "libraries:"
 298   @( ls $(1) 2>/dev/null || true )
 299 endef
 300 else
 301 define LIST_ALL_OLD_GLOB_MATCHES
 302 endef
 303 endif
 304
 305 ######################################################################
 306 # LLVM macros
 307 ######################################################################
 308
 309 LLVM_OPTIONAL_COMPONENTS=x86 arm aarch64 mips powerpc pnacl
 310 LLVM_REQUIRED_COMPONENTS=ipo bitreader bitwriter linker asmparser mcjit \
 311                 interpreter instrumentation
 312
 313 ifneq ($(CFG_LLVM_ROOT),)
 314 # Ensure we only try to link targets that the installed LLVM actually has:
 315 LLVM_COMPONENTS := $(filter $(shell $(CFG_LLVM_ROOT)/bin/llvm-config$(X_$(CFG_BUILD)) --components),\
 316                         $(LLVM_OPTIONAL_COMPONENTS)) $(LLVM_REQUIRED_COMPONENTS)
 317 else
 318 LLVM_COMPONENTS := $(LLVM_OPTIONAL_COMPONENTS) $(LLVM_REQUIRED_COMPONENTS)
 319 endif
 320
 321 # Only build these LLVM tools
 322 LLVM_TOOLS=bugpoint llc llvm-ar llvm-as llvm-dis llvm-mc opt llvm-extract
 323
 324 define DEF_LLVM_VARS
 325 # The configure script defines these variables with the target triples
 326 # separated by Z. This defines new ones with the expected format.
 327 ifeq ($$(CFG_LLVM_ROOT),)
 328 CFG_LLVM_BUILD_DIR_$(1):=$$(CFG_LLVM_BUILD_DIR_$(subst -,_,$(1)))
 329 CFG_LLVM_INST_DIR_$(1):=$$(CFG_LLVM_INST_DIR_$(subst -,_,$(1)))
 330 else
 331 CFG_LLVM_INST_DIR_$(1):=$$(CFG_LLVM_ROOT)
 332 endif
 333
 334 # Any rules that depend on LLVM should depend on LLVM_CONFIG
 335 LLVM_CONFIG_$(1):=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-config$$(X_$(1))
 336 LLVM_MC_$(1):=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-mc$$(X_$(1))
 337 LLVM_AR_$(1):=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-ar$$(X_$(1))
 338 LLVM_VERSION_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --version)
 339 LLVM_BINDIR_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --bindir)
 340 LLVM_INCDIR_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --includedir)
 341 LLVM_LIBDIR_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --libdir)
 342 LLVM_LIBDIR_RUSTFLAGS_$(1)=-L native="$$(LLVM_LIBDIR_$(1))"
 343 LLVM_LDFLAGS_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --ldflags)
 344 ifeq ($$(findstring freebsd,$(1)),freebsd)
 345 # On FreeBSD, it may search wrong headers (that are for pre-installed LLVM),
 346 # so we replace -I with -iquote to ensure that it searches bundled LLVM first.
 347 LLVM_CXXFLAGS_$(1)=$$(subst -I, -iquote , $$(shell "$$(LLVM_CONFIG_$(1))" --cxxflags))
 348 else
 349 LLVM_CXXFLAGS_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --cxxflags)
 350 endif
 351 LLVM_HOST_TRIPLE_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --host-target)
 352
 353 LLVM_AS_$(1)=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-as$$(X_$(1))
 354 LLC_$(1)=$$(CFG_LLVM_INST_DIR_$(1))/bin/llc$$(X_$(1))
 355
 356 LLVM_ALL_COMPONENTS_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --components)
 357
 358 endef
 359
 360 $(foreach host,$(CFG_HOST), \
 361  $(eval $(call DEF_LLVM_VARS,$(host))))
 362
 363 ######################################################################
 364 # Exports for sub-utilities
 365 ######################################################################
 366
 367 # Note that any variable that re-configure should pick up needs to be
 368 # exported
 369
 370 export CFG_SRC_DIR
 371 export CFG_SRC_DIR_RELATIVE
 372 export CFG_BUILD_DIR
 373 ifdef CFG_VER_DATE
 374 export CFG_VER_DATE
 375 endif
 376 ifdef CFG_VER_HASH
 377 export CFG_VER_HASH
 378 endif
 379 export CFG_VERSION
 380 export CFG_VERSION_WIN
 381 export CFG_RELEASE
 382 export CFG_PACKAGE_NAME
 383 export CFG_BUILD
 384 export CFG_RELEASE_CHANNEL
 385 export CFG_LLVM_ROOT
 386 export CFG_PREFIX
 387 export CFG_LIBDIR
 388 export CFG_LIBDIR_RELATIVE
 389 export CFG_DISABLE_INJECT_STD_VERSION
 390 ifdef CFG_DISABLE_UNSTABLE_FEATURES
 391 CFG_INFO := $(info cfg: disabling unstable features (CFG_DISABLE_UNSTABLE_FEATURES))
 392 # Turn on feature-staging
 393 export CFG_DISABLE_UNSTABLE_FEATURES
 394 # Subvert unstable feature lints to do the self-build
 395 export RUSTC_BOOTSTRAP_KEY:=$(CFG_BOOTSTRAP_KEY)
 396 endif
 397 export CFG_BOOTSTRAP_KEY
 398 ifdef CFG_MUSL_ROOT
 399 export CFG_MUSL_ROOT
 400 endif
 401
 402 ######################################################################
 403 # Per-stage targets and runner
 404 ######################################################################
 405
 406 # Valid setting-strings are 'all', 'none', 'gdb', 'lldb'
 407 # This 'function' will determine which debugger scripts to copy based on a
 408 # target triple. See debuggers.mk for more information.
 409 TRIPLE_TO_DEBUGGER_SCRIPT_SETTING=\
 410  $(if $(findstring windows-msvc,$(1)),none,all)
 411
 412 STAGES = 0 1 2 3
 413
 414 define SREQ
 415 # $(1) is the stage number
 416 # $(2) is the target triple
 417 # $(3) is the host triple
 418
 419 # Destinations of artifacts for the host compiler
 420 HROOT$(1)_H_$(3) = $(3)/stage$(1)
 421 HBIN$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/bin
 422
 423 ifeq ($$(CFG_WINDOWSY_$(3)),1)
 424 # On Windows we always store host runtime libraries in the 'bin' directory because
 425 # there's no rpath. Target libraries go under $CFG_LIBDIR_RELATIVE (usually 'lib').
 426 HLIB_RELATIVE$(1)_H_$(3) = bin
 427 TROOT$(1)_T_$(2)_H_$(3) = $$(HROOT$(1)_H_$(3))/$$(CFG_LIBDIR_RELATIVE)/rustlib/$(2)
 428 # Remove the next 3 lines after a snapshot
 429 ifeq ($(1),0)
 430 RUSTFLAGS_STAGE0 += -L $$(TROOT$(1)_T_$(2)_H_$(3))/lib
 431 endif
 432
 433 else
 434
 435 ifeq ($(1),0)
 436 HLIB_RELATIVE$(1)_H_$(3) = lib
 437 else
 438 HLIB_RELATIVE$(1)_H_$(3) = $$(CFG_LIBDIR_RELATIVE)
 439 endif
 440 TROOT$(1)_T_$(2)_H_$(3) = $$(HLIB$(1)_H_$(3))/rustlib/$(2)
 441
 442 endif
 443 HLIB$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/$$(HLIB_RELATIVE$(1)_H_$(3))
 444
 445 # Destinations of artifacts for target architectures
 446 TBIN$(1)_T_$(2)_H_$(3) = $$(TROOT$(1)_T_$(2)_H_$(3))/bin
 447 TLIB$(1)_T_$(2)_H_$(3) = $$(TROOT$(1)_T_$(2)_H_$(3))/lib
 448
 449 # Preqrequisites for using the stageN compiler
 450 ifeq ($(1),0)
 451 HSREQ$(1)_H_$(3) = $$(HBIN$(1)_H_$(3))/rustc$$(X_$(3))
 452 else
 453 HSREQ$(1)_H_$(3) = \
 454         $$(HBIN$(1)_H_$(3))/rustc$$(X_$(3)) \
 455         $$(MKFILE_DEPS) \
 456         tmp/install-debugger-scripts$(1)_H_$(3)-$$(call TRIPLE_TO_DEBUGGER_SCRIPT_SETTING,$(3)).done
 457 endif
 458
 459 # Prerequisites for using the stageN compiler to build target artifacts
 460 TSREQ$(1)_T_$(2)_H_$(3) = \
 461         $$(HSREQ$(1)_H_$(3)) \
 462         $$(foreach obj,$$(REQUIRED_OBJECTS_$(2)),\
 463                 $$(TLIB$(1)_T_$(2)_H_$(3))/$$(obj))
 464
 465 # Prerequisites for a working stageN compiler and libraries, for a specific
 466 # target
 467 SREQ$(1)_T_$(2)_H_$(3) = \
 468         $$(TSREQ$(1)_T_$(2)_H_$(3)) \
 469         $$(foreach dep,$$(TARGET_CRATES_$(2)), \
 470             $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep)) \
 471         tmp/install-debugger-scripts$(1)_T_$(2)_H_$(3)-$$(call TRIPLE_TO_DEBUGGER_SCRIPT_SETTING,$(2)).done
 472
 473 # Prerequisites for a working stageN compiler and complete set of target
 474 # libraries
 475 CSREQ$(1)_T_$(2)_H_$(3) = \
 476         $$(TSREQ$(1)_T_$(2)_H_$(3)) \
 477         $$(HBIN$(1)_H_$(3))/rustdoc$$(X_$(3)) \
 478         $$(foreach dep,$$(HOST_CRATES),$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep))
 479
 480 ifeq ($(1),0)
 481 # Don't run the stage0 compiler under valgrind - that ship has sailed
 482 CFG_VALGRIND_COMPILE$(1) =
 483 else
 484 CFG_VALGRIND_COMPILE$(1) = $$(CFG_VALGRIND_COMPILE)
 485 endif
 486
 487 # Add RUSTFLAGS_STAGEN values to the build command
 488 EXTRAFLAGS_STAGE$(1) = $$(RUSTFLAGS_STAGE$(1))
 489
 490 CFGFLAG$(1)_T_$(2)_H_$(3) = stage$(1)
 491
 492 endef
 493
 494 # Same macro/variables as above, but defined in a separate loop so it can use
 495 # all the variables above for all archs. The RPATH_VAR setup sometimes needs to
 496 # reach across triples to get things in order.
 497 #
 498 # Defines (with the standard $(1)_T_$(2)_H_$(3) suffix):
 499 # * `LD_LIBRARY_PATH_ENV_NAME`: the name for the key to use in the OS
 500 #   environment to access or extend the lookup path for dynamic
 501 #   libraries.  Note on Windows, that key is `$PATH`, and thus not
 502 #   only conflates programs with dynamic libraries, but also often
 503 #   contains spaces which confuse make.
 504 # * `LD_LIBRARY_PATH_ENV_HOSTDIR`: the entry to add to lookup path for the host
 505 # * `LD_LIBRARY_PATH_ENV_TARGETDIR`: the entry to add to lookup path for target
 506 #
 507 # Below that, HOST_RPATH_VAR and TARGET_RPATH_VAR are defined in terms of the
 508 # above settings.
 509 #
 510 define SREQ_CMDS
 511
 512 ifeq ($$(OSTYPE_$(3)),apple-darwin)
 513   LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := DYLD_LIBRARY_PATH
 514 else
 515 ifeq ($$(CFG_WINDOWSY_$(3)),1)
 516   LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := PATH
 517 else
 518   LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := LD_LIBRARY_PATH
 519 endif
 520 endif
 521
 522 LD_LIBRARY_PATH_ENV_HOSTDIR$(1)_T_$(2)_H_$(3) := \
 523     $$(CURDIR)/$$(HLIB$(1)_H_$(3)):$$(CFG_LLVM_INST_DIR_$(3))/lib
 524 LD_LIBRARY_PATH_ENV_TARGETDIR$(1)_T_$(2)_H_$(3) := \
 525     $$(CURDIR)/$$(TLIB$(1)_T_$(2)_H_$(3))
 526
 527 HOST_RPATH_VAR$(1)_T_$(2)_H_$(3) := \
 528   $$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))=$$(LD_LIBRARY_PATH_ENV_HOSTDIR$(1)_T_$(2)_H_$(3)):$$$$$$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))
 529 TARGET_RPATH_VAR$(1)_T_$(2)_H_$(3) := \
 530   $$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))=$$(LD_LIBRARY_PATH_ENV_TARGETDIR$(1)_T_$(2)_H_$(3)):$$$$$$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))
 531
 532 RPATH_VAR$(1)_T_$(2)_H_$(3) := $$(HOST_RPATH_VAR$(1)_T_$(2)_H_$(3))
 533
 534 # Pass --cfg stage0 only for the build->host part of stage0;
 535 # if you're building a cross config, the host->* parts are
 536 # effectively stage1, since it uses the just-built stage0.
 537 #
 538 # Also be sure to use the right rpath because we're loading libraries from the
 539 # CFG_BUILD's stage1 directory for our target, so switch this one instance of
 540 # `RPATH_VAR` to get the bootstrap working.
 541 ifeq ($(1),0)
 542 ifneq ($(strip $(CFG_BUILD)),$(strip $(3)))
 543 CFGFLAG$(1)_T_$(2)_H_$(3) = stage1
 544
 545 RPATH_VAR$(1)_T_$(2)_H_$(3) := $$(TARGET_RPATH_VAR1_T_$(2)_H_$$(CFG_BUILD))
 546 else
 547 ifdef CFG_ENABLE_LOCAL_REBUILD
 548 # Assume the local-rebuild rustc already has stage1 features too.
 549 CFGFLAG$(1)_T_$(2)_H_$(3) = stage1
 550 endif
 551 endif
 552 endif
 553
 554 STAGE$(1)_T_$(2)_H_$(3) := \
 555         $$(Q)$$(RPATH_VAR$(1)_T_$(2)_H_$(3)) \
 556                 $$(call CFG_RUN_TARG_$(3),$(1), \
 557                 $$(CFG_VALGRIND_COMPILE$(1)) \
 558                 $$(HBIN$(1)_H_$(3))/rustc$$(X_$(3)) \
 559                 --cfg $$(CFGFLAG$(1)_T_$(2)_H_$(3)) \
 560                 $$(CFG_RUSTC_FLAGS) $$(EXTRAFLAGS_STAGE$(1)) --target=$(2)) \
 561                 $$(RUSTC_FLAGS_$(2))
 562
 563 endef
 564
 565 $(foreach build,$(CFG_HOST), \
 566  $(eval $(foreach target,$(CFG_TARGET), \
 567   $(eval $(foreach stage,$(STAGES), \
 568    $(eval $(call SREQ,$(stage),$(target),$(build))))))))
 569
 570 $(foreach build,$(CFG_HOST), \
 571  $(eval $(foreach target,$(CFG_TARGET), \
 572   $(eval $(foreach stage,$(STAGES), \
 573    $(eval $(call SREQ_CMDS,$(stage),$(target),$(build))))))))
 574
 575 ######################################################################
 576 # rustc-H-targets
 577 #
 578 # Builds a functional Rustc for the given host.
 579 ######################################################################
 580
 581 define DEF_RUSTC_STAGE_TARGET
 582 # $(1) == architecture
 583 # $(2) == stage
 584
 585 rustc-stage$(2)-H-$(1): \
 586         $$(foreach target,$$(CFG_TARGET),$$(SREQ$(2)_T_$$(target)_H_$(1)))
 587
 588 endef
 589
 590 $(foreach host,$(CFG_HOST), \
 591  $(eval $(foreach stage,1 2 3, \
 592   $(eval $(call DEF_RUSTC_STAGE_TARGET,$(host),$(stage))))))
 593
 594 rustc-stage1: rustc-stage1-H-$(CFG_BUILD)
 595 rustc-stage2: rustc-stage2-H-$(CFG_BUILD)
 596 rustc-stage3: rustc-stage3-H-$(CFG_BUILD)
 597
 598 define DEF_RUSTC_TARGET
 599 # $(1) == architecture
 600
 601 rustc-H-$(1): rustc-stage2-H-$(1)
 602 endef
 603
 604 $(foreach host,$(CFG_TARGET), \
 605  $(eval $(call DEF_RUSTC_TARGET,$(host))))
 606
 607 rustc-stage1: rustc-stage1-H-$(CFG_BUILD)
 608 rustc-stage2: rustc-stage2-H-$(CFG_BUILD)
 609 rustc-stage3: rustc-stage3-H-$(CFG_BUILD)
 610 rustc: rustc-H-$(CFG_BUILD)
 611
 612 rustc-H-all: $(foreach host,$(CFG_HOST),rustc-H-$(host))
 613
 614 ######################################################################
 615 # Entrypoint rule
 616 ######################################################################
 617
 618 .DEFAULT_GOAL := all
 619
 620 define ALL_TARGET_N
 621 ifneq ($$(findstring $(1),$$(CFG_HOST)),)
 622 # This is a host
 623 all-target-$(1)-host-$(2): $$(CSREQ2_T_$(1)_H_$(2))
 624 else
 625 # This is a target only
 626 all-target-$(1)-host-$(2): $$(SREQ2_T_$(1)_H_$(2))
 627 endif
 628 endef
 629
 630 $(foreach target,$(CFG_TARGET), \
 631  $(foreach host,$(CFG_HOST), \
 632  $(eval $(call ALL_TARGET_N,$(target),$(host)))))
 633
 634 ALL_TARGET_RULES = $(foreach target,$(CFG_TARGET), \
 635         $(foreach host,$(CFG_HOST), \
 636  all-target-$(target)-host-$(host)))
 637
 638 all: $(ALL_TARGET_RULES) $(GENERATED) docs
 639
 640 ######################################################################
 641 # Build system documentation
 642 ######################################################################
 643
 644 # $(1) is the name of the doc <section> in Makefile.in
 645 # pick everything between tags | remove first line | remove last line
 646 # | remove extra (?) line | strip leading `#` from lines
 647 SHOW_DOCS = $(Q)awk '/<$(1)>/,/<\/$(1)>/' $(S)/Makefile.in | sed '1d' | sed '$$d' | sed 's/^\# \?//'
 648
 649 help:
 650         $(call SHOW_DOCS,help)
 651
 652 tips:
 653         $(call SHOW_DOCS,tips)
 654
 655 nitty-gritty:
 656         $(call SHOW_DOCS,nitty-gritty)