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=1.3.0
  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=.3
  22
  23 # Append a version-dependent hash to each library, so we can install different
  24 # versions in the same place
  25 CFG_FILENAME_EXTRA=$(shell printf '%s' $(CFG_RELEASE) | $(CFG_HASH_COMMAND))
  26
  27 ifeq ($(CFG_RELEASE_CHANNEL),stable)
  28 # This is the normal semver version string, e.g. "0.12.0", "0.12.0-nightly"
  29 CFG_RELEASE=$(CFG_RELEASE_NUM)
  30 # This is the string used in dist artifact file names, e.g. "0.12.0", "nightly"
  31 CFG_PACKAGE_VERS=$(CFG_RELEASE_NUM)
  32 CFG_DISABLE_UNSTABLE_FEATURES=1
  33 endif
  34 ifeq ($(CFG_RELEASE_CHANNEL),beta)
  35 CFG_RELEASE=$(CFG_RELEASE_NUM)-beta$(CFG_PRERELEASE_VERSION)
  36 # When building beta distributables just reuse the same "beta" name
  37 # so when we upload we'll always override the previous beta. This
  38 # doesn't actually impact the version reported by rustc - it's just
  39 # for file naming.
  40 CFG_PACKAGE_VERS=beta
  41 CFG_DISABLE_UNSTABLE_FEATURES=1
  42 endif
  43 ifeq ($(CFG_RELEASE_CHANNEL),nightly)
  44 CFG_RELEASE=$(CFG_RELEASE_NUM)-nightly
  45 # When building nightly distributables just reuse the same "nightly" name
  46 # so when we upload we'll always override the previous nighly. This
  47 # doesn't actually impact the version reported by rustc - it's just
  48 # for file naming.
  49 CFG_PACKAGE_VERS=nightly
  50 endif
  51 ifeq ($(CFG_RELEASE_CHANNEL),dev)
  52 CFG_RELEASE=$(CFG_RELEASE_NUM)-dev
  53 CFG_PACKAGE_VERS=$(CFG_RELEASE_NUM)-dev
  54 endif
  55
  56 # The name of the package to use for creating tarballs, installers etc.
  57 CFG_PACKAGE_NAME=rustc-$(CFG_PACKAGE_VERS)
  58
  59 # The version string plus commit information - this is what rustc reports
  60 CFG_VERSION = $(CFG_RELEASE)
  61 CFG_GIT_DIR := $(CFG_SRC_DIR).git
  62 # since $(CFG_GIT) may contain spaces (especially on Windows),
  63 # we need to escape them. (" " to r"\ ")
  64 # Note that $(subst ...) ignores space after `subst`,
  65 # so we use a hack: define $(SPACE) which contains space character.
  66 SPACE :=
  67 SPACE +=
  68 ifneq ($(CFG_GIT),)
  69 ifneq ($(wildcard $(subst $(SPACE),\$(SPACE),$(CFG_GIT_DIR))),)
  70     CFG_VER_DATE = $(shell git --git-dir='$(CFG_GIT_DIR)' log -1 --date=short --pretty=format:'%cd')
  71     CFG_VER_HASH = $(shell git --git-dir='$(CFG_GIT_DIR)' rev-parse HEAD)
  72     CFG_SHORT_VER_HASH = $(shell git --git-dir='$(CFG_GIT_DIR)' rev-parse --short=9 HEAD)
  73     CFG_VERSION += ($(CFG_SHORT_VER_HASH) $(CFG_VER_DATE))
  74 endif
  75 endif
  76
  77 # Windows exe's need numeric versions - don't use anything but
  78 # numbers and dots here
  79 CFG_VERSION_WIN = $(CFG_RELEASE_NUM)
  80
  81 CFG_INFO := $(info cfg: version $(CFG_VERSION))
  82
  83 ######################################################################
  84 # More configuration
  85 ######################################################################
  86
  87 MKFILE_DEPS := config.stamp $(call rwildcard,$(CFG_SRC_DIR)mk/,*)
  88 MKFILES_FOR_TARBALL:=$(MKFILE_DEPS)
  89 ifneq ($(NO_MKFILE_DEPS),)
  90 MKFILE_DEPS :=
  91 endif
  92 NON_BUILD_HOST = $(filter-out $(CFG_BUILD),$(CFG_HOST))
  93 NON_BUILD_TARGET = $(filter-out $(CFG_BUILD),$(CFG_TARGET))
  94
  95 ifneq ($(MAKE_RESTARTS),)
  96 CFG_INFO := $(info cfg: make restarts: $(MAKE_RESTARTS))
  97 endif
  98
  99 CFG_INFO := $(info cfg: build triple $(CFG_BUILD))
 100 CFG_INFO := $(info cfg: host triples $(CFG_HOST))
 101 CFG_INFO := $(info cfg: target triples $(CFG_TARGET))
 102
 103 ifneq ($(wildcard $(NON_BUILD_HOST)),)
 104 CFG_INFO := $(info cfg: non-build host triples $(NON_BUILD_HOST))
 105 endif
 106 ifneq ($(wildcard $(NON_BUILD_TARGET)),)
 107 CFG_INFO := $(info cfg: non-build target triples $(NON_BUILD_TARGET))
 108 endif
 109
 110 CFG_RUSTC_FLAGS := $(RUSTFLAGS)
 111 CFG_GCCISH_CFLAGS :=
 112 CFG_GCCISH_LINK_FLAGS :=
 113
 114 # Turn off broken quarantine (see jemalloc/jemalloc#161)
 115 CFG_JEMALLOC_FLAGS := --disable-fill
 116
 117 ifdef CFG_DISABLE_OPTIMIZE
 118   $(info cfg: disabling rustc optimization (CFG_DISABLE_OPTIMIZE))
 119   CFG_RUSTC_FLAGS +=
 120   CFG_JEMALLOC_FLAGS += --enable-debug
 121 else
 122   # The rtopt cfg turns off runtime sanity checks
 123   CFG_RUSTC_FLAGS += -O --cfg rtopt
 124 endif
 125
 126 CFG_JEMALLOC_FLAGS += $(JEMALLOC_FLAGS)
 127
 128 ifdef CFG_ENABLE_DEBUG_ASSERTIONS
 129   $(info cfg: enabling debug assertions (CFG_ENABLE_DEBUG_ASSERTIONS))
 130   CFG_RUSTC_FLAGS += -C debug-assertions=on
 131 endif
 132
 133 ifdef CFG_ENABLE_DEBUGINFO
 134   $(info cfg: enabling debuginfo (CFG_ENABLE_DEBUGINFO))
 135   CFG_RUSTC_FLAGS += -g
 136 endif
 137
 138 ifdef SAVE_TEMPS
 139   CFG_RUSTC_FLAGS += --save-temps
 140 endif
 141 ifdef ASM_COMMENTS
 142   CFG_RUSTC_FLAGS += -Z asm-comments
 143 endif
 144 ifdef TIME_PASSES
 145   CFG_RUSTC_FLAGS += -Z time-passes
 146 endif
 147 ifdef TIME_LLVM_PASSES
 148   CFG_RUSTC_FLAGS += -Z time-llvm-passes
 149 endif
 150 ifdef TRACE
 151   CFG_RUSTC_FLAGS += -Z trace
 152 endif
 153 ifdef CFG_ENABLE_RPATH
 154 CFG_RUSTC_FLAGS += -C rpath
 155 endif
 156
 157 # The executables crated during this compilation process have no need to include
 158 # static copies of libstd and libextra. We also generate dynamic versions of all
 159 # libraries, so in the interest of space, prefer dynamic linking throughout the
 160 # compilation process.
 161 #
 162 # Note though that these flags are omitted for the *bins* in stage2+. This means
 163 # that the snapshot will be generated with a statically linked rustc so we only
 164 # have to worry about the distribution of one file (with its native dynamic
 165 # dependencies)
 166 RUSTFLAGS_STAGE0 += -C prefer-dynamic
 167 RUSTFLAGS_STAGE1 += -C prefer-dynamic
 168 RUST_LIB_FLAGS_ST2 += -C prefer-dynamic
 169 RUST_LIB_FLAGS_ST3 += -C prefer-dynamic
 170
 171 # Landing pads require a lot of codegen. We can get through bootstrapping faster
 172 # by not emitting them.
 173 RUSTFLAGS_STAGE0 += -Z no-landing-pads
 174
 175 # platform-specific auto-configuration
 176 include $(CFG_SRC_DIR)mk/platform.mk
 177
 178 # Run the stage1/2 compilers under valgrind
 179 ifdef VALGRIND_COMPILE
 180   CFG_VALGRIND_COMPILE :=$(CFG_VALGRIND)
 181 else
 182   CFG_VALGRIND_COMPILE :=
 183 endif
 184
 185
 186 ifndef CFG_DISABLE_VALGRIND_RPASS
 187   $(info cfg: enabling valgrind run-pass tests (CFG_ENABLE_VALGRIND_RPASS))
 188   $(info cfg: valgrind-rpass command set to $(CFG_VALGRIND))
 189   CFG_VALGRIND_RPASS :=$(CFG_VALGRIND)
 190 else
 191   $(info cfg: disabling valgrind run-pass tests)
 192   CFG_VALGRIND_RPASS :=
 193 endif
 194
 195
 196 ifdef CFG_ENABLE_VALGRIND
 197   $(info cfg: enabling valgrind (CFG_ENABLE_VALGRIND))
 198 else
 199   CFG_VALGRIND :=
 200 endif
 201
 202 ######################################################################
 203 # Target-and-rule "utility variables"
 204 ######################################################################
 205
 206 define DEF_FOR_TARGET
 207 X_$(1) := $(CFG_EXE_SUFFIX_$(1))
 208 ifndef CFG_LLVM_TARGET_$(1)
 209 CFG_LLVM_TARGET_$(1) := $(1)
 210 endif
 211 endef
 212 $(foreach target,$(CFG_TARGET), \
 213   $(eval $(call DEF_FOR_TARGET,$(target))))
 214
 215 # "Source" files we generate in builddir along the way.
 216 GENERATED :=
 217
 218 # Delete the built-in rules.
 219 .SUFFIXES:
 220 %:: %,v
 221 %:: RCS/%,v
 222 %:: RCS/%
 223 %:: s.%
 224 %:: SCCS/s.%
 225
 226
 227 ######################################################################
 228 # Cleaning out old crates
 229 ######################################################################
 230
 231 # $(1) is the path for directory to match against
 232 # $(2) is the glob to use in the match
 233 #
 234 # Note that a common bug is to accidentally construct the glob denoted
 235 # by $(2) with a space character prefix, which invalidates the
 236 # construction $(1)$(2).
 237 define CHECK_FOR_OLD_GLOB_MATCHES
 238   $(Q)MATCHES="$(wildcard $(1))"; if [ -n "$$MATCHES" ] ; then echo "warning: there are previous" \'$(notdir $(2))\' "libraries:" $$MATCHES; fi
 239 endef
 240
 241 # Same interface as above, but deletes rather than just listing the files.
 242 ifdef VERBOSE
 243 define REMOVE_ALL_OLD_GLOB_MATCHES
 244   $(Q)MATCHES="$(wildcard $(1))"; if [ -n "$$MATCHES" ] ; then echo "warning: removing previous" \'$(notdir $(1))\' "libraries:" $$MATCHES; rm $$MATCHES ; fi
 245 endef
 246 else
 247 define REMOVE_ALL_OLD_GLOB_MATCHES
 248   $(Q)MATCHES="$(wildcard $(1))"; if [ -n "$$MATCHES" ] ; then rm $$MATCHES ; fi
 249 endef
 250 endif
 251
 252 # We use a different strategy for LIST_ALL_OLD_GLOB_MATCHES_EXCEPT
 253 # than in the macros above because it needs the result of running the
 254 # `ls` command after other rules in the command list have run; the
 255 # macro-expander for $(wildcard ...) would deliver its results too
 256 # soon. (This is in contrast to the macros above, which are meant to
 257 # be run at the outset of a command list in a rule.)
 258 ifdef VERBOSE
 259 define LIST_ALL_OLD_GLOB_MATCHES
 260   @echo "info: now are following matches for" '$(notdir $(1))' "libraries:"
 261   @( ls $(1) 2>/dev/null || true )
 262 endef
 263 else
 264 define LIST_ALL_OLD_GLOB_MATCHES
 265 endef
 266 endif
 267
 268 ######################################################################
 269 # LLVM macros
 270 ######################################################################
 271
 272 # FIXME: x86-ism
 273 LLVM_COMPONENTS=x86 arm aarch64 mips powerpc ipo bitreader bitwriter linker asmparser mcjit \
 274                 interpreter instrumentation
 275
 276 # Only build these LLVM tools
 277 LLVM_TOOLS=bugpoint llc llvm-ar llvm-as llvm-dis llvm-mc opt llvm-extract
 278
 279 define DEF_LLVM_VARS
 280 # The configure script defines these variables with the target triples
 281 # separated by Z. This defines new ones with the expected format.
 282 ifeq ($$(CFG_LLVM_ROOT),)
 283 CFG_LLVM_BUILD_DIR_$(1):=$$(CFG_LLVM_BUILD_DIR_$(subst -,_,$(1)))
 284 CFG_LLVM_INST_DIR_$(1):=$$(CFG_LLVM_INST_DIR_$(subst -,_,$(1)))
 285 else
 286 CFG_LLVM_INST_DIR_$(1):=$$(CFG_LLVM_ROOT)
 287 endif
 288
 289 # Any rules that depend on LLVM should depend on LLVM_CONFIG
 290 LLVM_CONFIG_$(1):=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-config$$(X_$(1))
 291 LLVM_MC_$(1):=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-mc$$(X_$(1))
 292 LLVM_AR_$(1):=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-ar$$(X_$(1))
 293 LLVM_VERSION_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --version)
 294 LLVM_BINDIR_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --bindir)
 295 LLVM_INCDIR_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --includedir)
 296 LLVM_LIBDIR_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --libdir)
 297 LLVM_LIBDIR_RUSTFLAGS_$(1)=-L "$$(LLVM_LIBDIR_$(1))"
 298 LLVM_LDFLAGS_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --ldflags)
 299 ifeq ($$(findstring freebsd,$(1)),freebsd)
 300 # On FreeBSD, it may search wrong headers (that are for pre-installed LLVM),
 301 # so we replace -I with -iquote to ensure that it searches bundled LLVM first.
 302 LLVM_CXXFLAGS_$(1)=$$(subst -I, -iquote , $$(shell "$$(LLVM_CONFIG_$(1))" --cxxflags))
 303 else
 304 LLVM_CXXFLAGS_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --cxxflags)
 305 endif
 306 LLVM_HOST_TRIPLE_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --host-target)
 307
 308 LLVM_AS_$(1)=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-as$$(X_$(1))
 309 LLC_$(1)=$$(CFG_LLVM_INST_DIR_$(1))/bin/llc$$(X_$(1))
 310
 311 endef
 312
 313 $(foreach host,$(CFG_HOST), \
 314  $(eval $(call DEF_LLVM_VARS,$(host))))
 315
 316 ######################################################################
 317 # Exports for sub-utilities
 318 ######################################################################
 319
 320 # Note that any variable that re-configure should pick up needs to be
 321 # exported
 322
 323 export CFG_SRC_DIR
 324 export CFG_SRC_DIR_RELATIVE
 325 export CFG_BUILD_DIR
 326 ifdef CFG_VER_DATE
 327 export CFG_VER_DATE
 328 endif
 329 ifdef CFG_VER_HASH
 330 export CFG_VER_HASH
 331 endif
 332 export CFG_VERSION
 333 export CFG_VERSION_WIN
 334 export CFG_RELEASE
 335 export CFG_PACKAGE_NAME
 336 export CFG_BUILD
 337 export CFG_RELEASE_CHANNEL
 338 export CFG_LLVM_ROOT
 339 export CFG_PREFIX
 340 export CFG_LIBDIR
 341 export CFG_LIBDIR_RELATIVE
 342 export CFG_DISABLE_INJECT_STD_VERSION
 343 ifdef CFG_DISABLE_UNSTABLE_FEATURES
 344 CFG_INFO := $(info cfg: disabling unstable features (CFG_DISABLE_UNSTABLE_FEATURES))
 345 # Turn on feature-staging
 346 export CFG_DISABLE_UNSTABLE_FEATURES
 347 # Subvert unstable feature lints to do the self-build
 348 export RUSTC_BOOTSTRAP_KEY:=$(CFG_BOOTSTRAP_KEY)
 349 endif
 350 export CFG_BOOTSTRAP_KEY
 351
 352 ######################################################################
 353 # Per-stage targets and runner
 354 ######################################################################
 355
 356 # Valid setting-strings are 'all', 'none', 'gdb', 'lldb'
 357 # This 'function' will determine which debugger scripts to copy based on a
 358 # target triple. See debuggers.mk for more information.
 359 TRIPLE_TO_DEBUGGER_SCRIPT_SETTING=\
 360  $(if $(findstring windows,$(1)),none,$(if $(findstring darwin,$(1)),lldb,gdb))
 361
 362 STAGES = 0 1 2 3
 363
 364 define SREQ
 365 # $(1) is the stage number
 366 # $(2) is the target triple
 367 # $(3) is the host triple
 368
 369 # Destinations of artifacts for the host compiler
 370 HROOT$(1)_H_$(3) = $(3)/stage$(1)
 371 HBIN$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/bin
 372 ifeq ($$(CFG_WINDOWSY_$(3)),1)
 373 HLIB$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/$$(CFG_LIBDIR_RELATIVE)
 374 else
 375 ifeq ($(1),0)
 376 HLIB$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/lib
 377 else
 378 HLIB$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/$$(CFG_LIBDIR_RELATIVE)
 379 endif
 380 endif
 381
 382 # Destinations of artifacts for target architectures
 383 TROOT$(1)_T_$(2)_H_$(3) = $$(HLIB$(1)_H_$(3))/rustlib/$(2)
 384 TBIN$(1)_T_$(2)_H_$(3) = $$(TROOT$(1)_T_$(2)_H_$(3))/bin
 385 TLIB$(1)_T_$(2)_H_$(3) = $$(TROOT$(1)_T_$(2)_H_$(3))/lib
 386
 387 # Preqrequisites for using the stageN compiler
 388 ifeq ($(1),0)
 389 HSREQ$(1)_H_$(3) = $$(HBIN$(1)_H_$(3))/rustc$$(X_$(3))
 390 else
 391 HSREQ$(1)_H_$(3) = \
 392         $$(HBIN$(1)_H_$(3))/rustc$$(X_$(3)) \
 393         $$(MKFILE_DEPS) \
 394         tmp/install-debugger-scripts$(1)_H_$(3)-$$(call TRIPLE_TO_DEBUGGER_SCRIPT_SETTING,$(3)).done
 395 endif
 396
 397 # Prerequisites for using the stageN compiler to build target artifacts
 398 TSREQ$(1)_T_$(2)_H_$(3) = \
 399         $$(HSREQ$(1)_H_$(3)) \
 400         $$(foreach obj,$$(INSTALLED_OBJECTS_$(2)),\
 401                 $$(TLIB$(1)_T_$(2)_H_$(3))/$$(obj))
 402
 403 # Prerequisites for a working stageN compiler and libraries, for a specific
 404 # target
 405 SREQ$(1)_T_$(2)_H_$(3) = \
 406         $$(TSREQ$(1)_T_$(2)_H_$(3)) \
 407         $$(foreach dep,$$(TARGET_CRATES), \
 408             $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep)) \
 409         tmp/install-debugger-scripts$(1)_T_$(2)_H_$(3)-$$(call TRIPLE_TO_DEBUGGER_SCRIPT_SETTING,$(2)).done
 410
 411 # Prerequisites for a working stageN compiler and complete set of target
 412 # libraries
 413 CSREQ$(1)_T_$(2)_H_$(3) = \
 414         $$(TSREQ$(1)_T_$(2)_H_$(3)) \
 415         $$(HBIN$(1)_H_$(3))/rustdoc$$(X_$(3)) \
 416         $$(foreach dep,$$(CRATES),$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep))
 417
 418 ifeq ($(1),0)
 419 # Don't run the stage0 compiler under valgrind - that ship has sailed
 420 CFG_VALGRIND_COMPILE$(1) =
 421 else
 422 CFG_VALGRIND_COMPILE$(1) = $$(CFG_VALGRIND_COMPILE)
 423 endif
 424
 425 # Add RUSTFLAGS_STAGEN values to the build command
 426 EXTRAFLAGS_STAGE$(1) = $$(RUSTFLAGS_STAGE$(1))
 427
 428 CFGFLAG$(1)_T_$(2)_H_$(3) = stage$(1)
 429
 430 endef
 431
 432 # Same macro/variables as above, but defined in a separate loop so it can use
 433 # all the variables above for all archs. The RPATH_VAR setup sometimes needs to
 434 # reach across triples to get things in order.
 435 #
 436 # Defines (with the standard $(1)_T_$(2)_H_$(3) suffix):
 437 # * `LD_LIBRARY_PATH_ENV_NAME`: the name for the key to use in the OS
 438 #   environment to access or extend the lookup path for dynamic
 439 #   libraries.  Note on Windows, that key is `$PATH`, and thus not
 440 #   only conflates programs with dynamic libraries, but also often
 441 #   contains spaces which confuse make.
 442 # * `LD_LIBRARY_PATH_ENV_HOSTDIR`: the entry to add to lookup path for the host
 443 # * `LD_LIBRARY_PATH_ENV_TARGETDIR`: the entry to add to lookup path for target
 444 #
 445 # Below that, HOST_RPATH_VAR and TARGET_RPATH_VAR are defined in terms of the
 446 # above settings.
 447 #
 448 define SREQ_CMDS
 449
 450 ifeq ($$(OSTYPE_$(3)),apple-darwin)
 451   LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := DYLD_LIBRARY_PATH
 452 else
 453 ifeq ($$(CFG_WINDOWSY_$(3)),1)
 454   LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := PATH
 455 else
 456   LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := LD_LIBRARY_PATH
 457 endif
 458 endif
 459
 460 LD_LIBRARY_PATH_ENV_HOSTDIR$(1)_T_$(2)_H_$(3) := \
 461     $$(CURDIR)/$$(HLIB$(1)_H_$(3))
 462 LD_LIBRARY_PATH_ENV_TARGETDIR$(1)_T_$(2)_H_$(3) := \
 463     $$(CURDIR)/$$(TLIB1_T_$(2)_H_$(CFG_BUILD))
 464
 465 HOST_RPATH_VAR$(1)_T_$(2)_H_$(3) := \
 466   $$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))=$$(LD_LIBRARY_PATH_ENV_HOSTDIR$(1)_T_$(2)_H_$(3)):$$$$$$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))
 467 TARGET_RPATH_VAR$(1)_T_$(2)_H_$(3) := \
 468   $$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))=$$(LD_LIBRARY_PATH_ENV_TARGETDIR$(1)_T_$(2)_H_$(3)):$$$$$$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))
 469
 470 RPATH_VAR$(1)_T_$(2)_H_$(3) := $$(HOST_RPATH_VAR$(1)_T_$(2)_H_$(3))
 471
 472 # Pass --cfg stage0 only for the build->host part of stage0;
 473 # if you're building a cross config, the host->* parts are
 474 # effectively stage1, since it uses the just-built stage0.
 475 #
 476 # This logic is similar to how the LD_LIBRARY_PATH variable must
 477 # change be slightly different when doing cross compilations.
 478 # The build doesn't copy over all target libraries into
 479 # a new directory, so we need to point the library path at
 480 # the build directory where all the target libraries came
 481 # from (the stage0 build host). Otherwise the relative rpaths
 482 # inside of the rustc binary won't get resolved correctly.
 483 ifeq ($(1),0)
 484 ifneq ($(strip $(CFG_BUILD)),$(strip $(3)))
 485 CFGFLAG$(1)_T_$(2)_H_$(3) = stage1
 486
 487 RPATH_VAR$(1)_T_$(2)_H_$(3) := $$(TARGET_RPATH_VAR$(1)_T_$(2)_H_$(3))
 488 endif
 489 endif
 490
 491 STAGE$(1)_T_$(2)_H_$(3) := \
 492         $$(Q)$$(RPATH_VAR$(1)_T_$(2)_H_$(3)) \
 493                 $$(call CFG_RUN_TARG_$(3),$(1), \
 494                 $$(CFG_VALGRIND_COMPILE$(1)) \
 495                 $$(HBIN$(1)_H_$(3))/rustc$$(X_$(3)) \
 496                 --cfg $$(CFGFLAG$(1)_T_$(2)_H_$(3)) \
 497                 $$(CFG_RUSTC_FLAGS) $$(EXTRAFLAGS_STAGE$(1)) --target=$(2)) \
 498                 $$(RUSTC_FLAGS_$(2))
 499
 500 PERF_STAGE$(1)_T_$(2)_H_$(3) := \
 501         $$(Q)$$(call CFG_RUN_TARG_$(3),$(1), \
 502                 $$(CFG_PERF_TOOL) \
 503                 $$(HBIN$(1)_H_$(3))/rustc$$(X_$(3)) \
 504                 --cfg $$(CFGFLAG$(1)_T_$(2)_H_$(3)) \
 505                 $$(CFG_RUSTC_FLAGS) $$(EXTRAFLAGS_STAGE$(1)) --target=$(2)) \
 506                 $$(RUSTC_FLAGS_$(2))
 507
 508 endef
 509
 510 $(foreach build,$(CFG_HOST), \
 511  $(eval $(foreach target,$(CFG_TARGET), \
 512   $(eval $(foreach stage,$(STAGES), \
 513    $(eval $(call SREQ,$(stage),$(target),$(build))))))))
 514
 515 $(foreach build,$(CFG_HOST), \
 516  $(eval $(foreach target,$(CFG_TARGET), \
 517   $(eval $(foreach stage,$(STAGES), \
 518    $(eval $(call SREQ_CMDS,$(stage),$(target),$(build))))))))
 519
 520 ######################################################################
 521 # rustc-H-targets
 522 #
 523 # Builds a functional Rustc for the given host.
 524 ######################################################################
 525
 526 define DEF_RUSTC_STAGE_TARGET
 527 # $(1) == architecture
 528 # $(2) == stage
 529
 530 rustc-stage$(2)-H-$(1): \
 531         $$(foreach target,$$(CFG_TARGET),$$(SREQ$(2)_T_$$(target)_H_$(1)))
 532
 533 endef
 534
 535 $(foreach host,$(CFG_HOST), \
 536  $(eval $(foreach stage,1 2 3, \
 537   $(eval $(call DEF_RUSTC_STAGE_TARGET,$(host),$(stage))))))
 538
 539 rustc-stage1: rustc-stage1-H-$(CFG_BUILD)
 540 rustc-stage2: rustc-stage2-H-$(CFG_BUILD)
 541 rustc-stage3: rustc-stage3-H-$(CFG_BUILD)
 542
 543 define DEF_RUSTC_TARGET
 544 # $(1) == architecture
 545
 546 rustc-H-$(1): rustc-stage2-H-$(1)
 547 endef
 548
 549 $(foreach host,$(CFG_TARGET), \
 550  $(eval $(call DEF_RUSTC_TARGET,$(host))))
 551
 552 rustc-stage1: rustc-stage1-H-$(CFG_BUILD)
 553 rustc-stage2: rustc-stage2-H-$(CFG_BUILD)
 554 rustc-stage3: rustc-stage3-H-$(CFG_BUILD)
 555 rustc: rustc-H-$(CFG_BUILD)
 556
 557 rustc-H-all: $(foreach host,$(CFG_HOST),rustc-H-$(host))
 558
 559 ######################################################################
 560 # Entrypoint rule
 561 ######################################################################
 562
 563 .DEFAULT_GOAL := all
 564
 565 define ALL_TARGET_N
 566 ifneq ($$(findstring $(1),$$(CFG_HOST)),)
 567 # This is a host
 568 all-target-$(1)-host-$(2): $$(CSREQ2_T_$(1)_H_$(2))
 569 else
 570 # This is a target only
 571 all-target-$(1)-host-$(2): $$(SREQ2_T_$(1)_H_$(2))
 572 endif
 573 endef
 574
 575 $(foreach target,$(CFG_TARGET), \
 576  $(foreach host,$(CFG_HOST), \
 577  $(eval $(call ALL_TARGET_N,$(target),$(host)))))
 578
 579 ALL_TARGET_RULES = $(foreach target,$(CFG_TARGET), \
 580         $(foreach host,$(CFG_HOST), \
 581  all-target-$(target)-host-$(host)))
 582
 583 all: $(ALL_TARGET_RULES) $(GENERATED) docs
 584
 585 ######################################################################
 586 # Build system documentation
 587 ######################################################################
 588
 589 # $(1) is the name of the doc <section> in Makefile.in
 590 # pick everything between tags | remove first line | remove last line
 591 # | remove extra (?) line | strip leading `#` from lines
 592 SHOW_DOCS = $(Q)awk '/<$(1)>/,/<\/$(1)>/' $(S)/Makefile.in | sed '1d' | sed '$$d' | sed 's/^\# \?//'
 593
 594 help:
 595         $(call SHOW_DOCS,help)
 596
 597 tips:
 598         $(call SHOW_DOCS,tips)
 599
 600 nitty-gritty:
 601         $(call SHOW_DOCS,nitty-gritty)