configure

   1 #!/bin/sh
   2
   3 # /bin/sh on Solaris is not a POSIX compatible shell, but /usr/bin/bash is.
   4 if [ `uname -s` = 'SunOS' -a "${POSIX_SHELL}" != "true" ]; then
   5     POSIX_SHELL="true"
   6     export POSIX_SHELL
   7     exec /usr/bin/env bash $0 "$@"
   8 fi
   9 unset POSIX_SHELL # clear it so if we invoke other scripts, they run as bash as well
  10
  11 msg() {
  12     echo "configure: $*"
  13 }
  14
  15 step_msg() {
  16     msg
  17     msg "$1"
  18     msg
  19 }
  20
  21 warn() {
  22     echo "configure: WARNING: $1"
  23 }
  24
  25 err() {
  26     echo "configure: error: $1"
  27     exit 1
  28 }
  29
  30 run() {
  31     msg "$@"
  32     "$@"
  33 }
  34
  35 need_ok() {
  36     if [ $? -ne 0 ]
  37     then
  38         err "$1"
  39     fi
  40 }
  41
  42 need_cmd() {
  43     if command -v $1 >/dev/null 2>&1
  44     then msg "found program '$1'"
  45     else err "program '$1' is missing, please install it"
  46     fi
  47 }
  48
  49 make_dir() {
  50     if [ ! -d $1 ]
  51     then
  52         run mkdir -p $1
  53     fi
  54 }
  55
  56 copy_if_changed() {
  57     if cmp -s $1 $2
  58     then
  59         msg "leaving $2 unchanged"
  60     else
  61         run cp -f $1 $2
  62         chmod u-w $2 # make copied artifact read-only
  63     fi
  64 }
  65
  66 move_if_changed() {
  67     if cmp -s $1 $2
  68     then
  69         msg "leaving $2 unchanged"
  70     else
  71         run mv -f $1 $2
  72         chmod u-w $2 # make moved artifact read-only
  73     fi
  74 }
  75
  76 putvar() {
  77     local T
  78     eval T=\$$1
  79     eval TLEN=\${#$1}
  80     if [ $TLEN -gt 35 ]
  81     then
  82         printf "configure: %-20s := %.35s ...\n" $1 "$T"
  83     else
  84         printf "configure: %-20s := %s %s\n" $1 "$T" "$2"
  85     fi
  86     printf "%-20s := %s\n" $1 "$T" >>config.tmp
  87 }
  88
  89 putpathvar() {
  90     local T
  91     eval T=\$$1
  92     eval TLEN=\${#$1}
  93     if [ $TLEN -gt 35 ]
  94     then
  95         printf "configure: %-20s := %.35s ...\n" $1 "$T"
  96     else
  97         printf "configure: %-20s := %s %s\n" $1 "$T" "$2"
  98     fi
  99     if [ -z "$T" ]
 100     then
 101         printf "%-20s := \n" $1 >>config.tmp
 102     else
 103         printf "%-20s := \"%s\"\n" $1 "$T" >>config.tmp
 104     fi
 105 }
 106
 107 probe() {
 108     local V=$1
 109     shift
 110     local P
 111     local T
 112     for P
 113     do
 114         T=$(command -v $P 2>&1)
 115         if [ $? -eq 0 ]
 116         then
 117             VER0=$($P --version 2>/dev/null \
 118                 |  grep -o '[vV]\?[0-9][0-9.][a-z0-9.-]*' | head -1 )
 119             if [ $? -eq 0 -a "x${VER0}" != "x" ]
 120             then
 121               VER="($VER0)"
 122             else
 123               VER=""
 124             fi
 125             break
 126         else
 127             VER=""
 128             T=""
 129         fi
 130     done
 131     eval $V=\$T
 132     putpathvar $V "$VER"
 133 }
 134
 135 probe_need() {
 136     probe $*
 137     local V=$1
 138     shift
 139     eval VV=\$$V
 140     if [ -z "$VV" ]
 141     then
 142         err "$V needed, but unable to find any of: $*"
 143     fi
 144 }
 145
 146 validate_opt () {
 147     for arg in $CFG_CONFIGURE_ARGS
 148     do
 149         isArgValid=0
 150         for option in $BOOL_OPTIONS
 151         do
 152             if test --disable-$option = $arg
 153             then
 154                 isArgValid=1
 155             fi
 156             if test --enable-$option = $arg
 157             then
 158                 isArgValid=1
 159             fi
 160         done
 161         for option in $VAL_OPTIONS
 162         do
 163             if echo "$arg" | grep -q -- "--$option="
 164             then
 165                 isArgValid=1
 166             fi
 167         done
 168         if [ "$arg" = "--help" ]
 169         then
 170             echo
 171             echo "No more help available for Configure options,"
 172             echo "check the Wiki or join our IRC channel"
 173             break
 174         else
 175             if test $isArgValid -eq 0
 176             then
 177                 err "Option '$arg' is not recognized"
 178             fi
 179         fi
 180     done
 181 }
 182
 183 # `valopt OPTION_NAME DEFAULT DOC` extracts a string-valued option
 184 # from command line, using provided default value for the option if
 185 # not present, and saves it to the generated config.mk.
 186 #
 187 # `valopt_nosave` is much the same, except that it does not save the
 188 # result to config.mk (instead the script should use `putvar` itself
 189 # later on to save it).  `valopt_core` is the core upon which the
 190 # other two are built.
 191
 192 valopt_core() {
 193     VAL_OPTIONS="$VAL_OPTIONS $2"
 194
 195     local SAVE=$1
 196     local OP=$2
 197     local DEFAULT=$3
 198     shift
 199     shift
 200     shift
 201     local DOC="$*"
 202     if [ $HELP -eq 0 ]
 203     then
 204         local UOP=$(echo $OP | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
 205         local V="CFG_${UOP}"
 206         local V_PROVIDED="${V}_PROVIDED"
 207         eval $V="$DEFAULT"
 208         for arg in $CFG_CONFIGURE_ARGS
 209         do
 210             if echo "$arg" | grep -q -- "--$OP="
 211             then
 212                 val=$(echo "$arg" | cut -f2 -d=)
 213                 eval $V=$val
 214                 eval $V_PROVIDED=1
 215             fi
 216         done
 217         if [ "$SAVE" = "save" ]
 218         then
 219             putvar $V
 220         fi
 221     else
 222         if [ -z "$DEFAULT" ]
 223         then
 224             DEFAULT="<none>"
 225         fi
 226         OP="${OP}=[${DEFAULT}]"
 227         printf "    --%-30s %s\n" "$OP" "$DOC"
 228     fi
 229 }
 230
 231 valopt_nosave() {
 232     valopt_core nosave "$@"
 233 }
 234
 235 valopt() {
 236     valopt_core save "$@"
 237 }
 238
 239 # `opt OPTION_NAME DEFAULT DOC` extracts a boolean-valued option from
 240 # command line, using the provided default value (0/1) for the option
 241 # if not present, and saves it to the generated config.mk.
 242 #
 243 # `opt_nosave` is much the same, except that it does not save the
 244 # result to config.mk (instead the script should use `putvar` itself
 245 # later on to save it).  `opt_core` is the core upon which the other
 246 # two are built.
 247
 248 opt_core() {
 249     BOOL_OPTIONS="$BOOL_OPTIONS $2"
 250
 251     local SAVE=$1
 252     local OP=$2
 253     local DEFAULT=$3
 254     shift
 255     shift
 256     shift
 257     local DOC="$*"
 258     local FLAG=""
 259
 260     if [ $DEFAULT -eq 0 ]
 261     then
 262         FLAG="enable"
 263         DEFAULT_FLAG="disable"
 264     else
 265         FLAG="disable"
 266         DEFAULT_FLAG="enable"
 267         DOC="don't $DOC"
 268     fi
 269
 270     if [ $HELP -eq 0 ]
 271     then
 272         for arg in $CFG_CONFIGURE_ARGS
 273         do
 274             if [ "$arg" = "--${FLAG}-${OP}" ]
 275             then
 276                 OP=$(echo $OP | tr 'a-z-' 'A-Z_')
 277                 FLAG=$(echo $FLAG | tr 'a-z' 'A-Z')
 278                 local V="CFG_${FLAG}_${OP}"
 279                 local V_PROVIDED="CFG_${FLAG}_${OP}_PROVIDED"
 280                 eval $V=1
 281                 eval $V_PROVIDED=1
 282                 if [ "$SAVE" = "save" ]
 283                 then
 284                    putvar $V
 285                 fi
 286             elif [ "$arg" = "--${DEFAULT_FLAG}-${OP}" ]
 287             then
 288                 OP=$(echo $OP | tr 'a-z-' 'A-Z_')
 289                 DEFAULT_FLAG=$(echo $DEFAULT_FLAG | tr 'a-z' 'A-Z')
 290                 local V_PROVIDED="CFG_${DEFAULT_FLAG}_${OP}_PROVIDED"
 291                 eval $V_PROVIDED=1
 292             fi
 293         done
 294     else
 295         if [ -n "$META" ]
 296         then
 297             OP="$OP=<$META>"
 298         fi
 299         printf "    --%-30s %s\n" "$FLAG-$OP" "$DOC"
 300      fi
 301 }
 302
 303 opt_nosave() {
 304     opt_core nosave "$@"
 305 }
 306
 307 opt() {
 308     opt_core save "$@"
 309 }
 310
 311 envopt() {
 312     local NAME=$1
 313     local V="CFG_${NAME}"
 314     eval VV=\$$V
 315
 316     # If configure didn't set a value already, then check environment.
 317     #
 318     # (It is recommended that the configure script always check the
 319     # environment before setting any values to envopt variables; see
 320     # e.g.  how CFG_CC is handled, where it first checks `-z "$CC"`,
 321     # and issues msg if it ends up employing that provided value.)
 322     if [ -z "$VV" ]
 323     then
 324         eval $V=\$$NAME
 325         eval VV=\$$V
 326     fi
 327
 328     # If script or environment provided a value, save it.
 329     if [ -n "$VV" ]
 330     then
 331         putvar $V
 332     fi
 333 }
 334
 335 enable_if_not_disabled() {
 336     local OP=$1
 337     local UOP=$(echo $OP | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
 338     local ENAB_V="CFG_ENABLE_$UOP"
 339     local EXPLICITLY_DISABLED="CFG_DISABLE_${UOP}_PROVIDED"
 340     eval VV=\$$EXPLICITLY_DISABLED
 341     if [ -z "$VV" ]; then
 342         eval $ENAB_V=1
 343     fi
 344 }
 345
 346 to_gnu_triple() {
 347     case $1 in
 348         i686-pc-windows-gnu) echo i686-w64-mingw32 ;;
 349         x86_64-pc-windows-gnu) echo x86_64-w64-mingw32 ;;
 350         *) echo $1 ;;
 351     esac
 352 }
 353
 354 # Prints the absolute path of a directory to stdout
 355 abs_path() {
 356     local _path="$1"
 357     # Unset CDPATH because it causes havok: it makes the destination unpredictable
 358     # and triggers 'cd' to print the path to stdout. Route `cd`'s output to /dev/null
 359     # for good measure.
 360     (unset CDPATH && cd "$_path" > /dev/null && pwd)
 361 }
 362
 363 HELP=0
 364 for arg; do
 365     case "$arg" in
 366         --help) HELP=1;;
 367     esac
 368 done
 369
 370 msg "looking for configure programs"
 371 need_cmd cmp
 372 need_cmd mkdir
 373 need_cmd printf
 374 need_cmd cut
 375 need_cmd head
 376 need_cmd grep
 377 need_cmd xargs
 378 need_cmd cp
 379 need_cmd find
 380 need_cmd uname
 381 need_cmd date
 382 need_cmd tr
 383 need_cmd sed
 384 need_cmd file
 385 need_cmd make
 386
 387 msg "inspecting environment"
 388
 389 CFG_OSTYPE=$(uname -s)
 390 CFG_CPUTYPE=$(uname -m)
 391
 392 if [ $CFG_OSTYPE = Darwin -a $CFG_CPUTYPE = i386 ]
 393 then
 394     # Darwin's `uname -s` lies and always returns i386. We have to use sysctl
 395     # instead.
 396     if sysctl hw.optional.x86_64 | grep -q ': 1'
 397     then
 398         CFG_CPUTYPE=x86_64
 399     fi
 400 fi
 401
 402 # The goal here is to come up with the same triple as LLVM would,
 403 # at least for the subset of platforms we're willing to target.
 404
 405 case $CFG_OSTYPE in
 406
 407     Linux)
 408         CFG_OSTYPE=unknown-linux-gnu
 409         ;;
 410
 411     FreeBSD)
 412         CFG_OSTYPE=unknown-freebsd
 413         ;;
 414
 415     DragonFly)
 416         CFG_OSTYPE=unknown-dragonfly
 417         ;;
 418
 419     Bitrig)
 420         CFG_OSTYPE=unknown-bitrig
 421         ;;
 422
 423     OpenBSD)
 424         CFG_OSTYPE=unknown-openbsd
 425        ;;
 426
 427     NetBSD)
 428             CFG_OSTYPE=unknown-netbsd
 429             ;;
 430
 431     Darwin)
 432         CFG_OSTYPE=apple-darwin
 433         ;;
 434
 435     SunOS)
 436         CFG_OSTYPE=sun-solaris
 437         CFG_CPUTYPE=$(isainfo -n)
 438         ;;
 439
 440     Haiku)
 441         CFG_OSTYPE=unknown-haiku
 442         ;;
 443
 444     MINGW*)
 445         # msys' `uname` does not print gcc configuration, but prints msys
 446         # configuration. so we cannot believe `uname -m`:
 447         # msys1 is always i686 and msys2 is always x86_64.
 448         # instead, msys defines $MSYSTEM which is MINGW32 on i686 and
 449         # MINGW64 on x86_64.
 450         CFG_CPUTYPE=i686
 451         CFG_OSTYPE=pc-windows-gnu
 452         if [ "$MSYSTEM" = MINGW64 ]
 453         then
 454             CFG_CPUTYPE=x86_64
 455         fi
 456         ;;
 457
 458     MSYS*)
 459         CFG_OSTYPE=pc-windows-gnu
 460         ;;
 461
 462 # Thad's Cygwin identifiers below
 463
 464 #   Vista 32 bit
 465     CYGWIN_NT-6.0)
 466         CFG_OSTYPE=pc-windows-gnu
 467         CFG_CPUTYPE=i686
 468         ;;
 469
 470 #   Vista 64 bit
 471     CYGWIN_NT-6.0-WOW64)
 472         CFG_OSTYPE=pc-windows-gnu
 473         CFG_CPUTYPE=x86_64
 474         ;;
 475
 476 #   Win 7 32 bit
 477     CYGWIN_NT-6.1)
 478         CFG_OSTYPE=pc-windows-gnu
 479         CFG_CPUTYPE=i686
 480         ;;
 481
 482 #   Win 7 64 bit
 483     CYGWIN_NT-6.1-WOW64)
 484         CFG_OSTYPE=pc-windows-gnu
 485         CFG_CPUTYPE=x86_64
 486         ;;
 487
 488 #   Win 8 # uname -s on 64-bit cygwin does not contain WOW64, so simply use uname -m to detect arch (works in my install)
 489     CYGWIN_NT-6.3)
 490         CFG_OSTYPE=pc-windows-gnu
 491         ;;
 492 # We do not detect other OS such as XP/2003 using 64 bit using uname.
 493 # If we want to in the future, we will need to use Cygwin - Chuck's csih helper in /usr/lib/csih/winProductName.exe or alternative.
 494     *)
 495         err "unknown OS type: $CFG_OSTYPE"
 496         ;;
 497 esac
 498
 499
 500 case $CFG_CPUTYPE in
 501
 502     i386 | i486 | i686 | i786 | x86)
 503         CFG_CPUTYPE=i686
 504         ;;
 505
 506     xscale | arm)
 507         CFG_CPUTYPE=arm
 508         ;;
 509
 510     armv6l)
 511         CFG_CPUTYPE=arm
 512         CFG_OSTYPE="${CFG_OSTYPE}eabihf"
 513         ;;
 514
 515     armv7l)
 516         CFG_CPUTYPE=armv7
 517         CFG_OSTYPE="${CFG_OSTYPE}eabihf"
 518         ;;
 519
 520     aarch64)
 521         CFG_CPUTYPE=aarch64
 522         ;;
 523
 524     powerpc | ppc)
 525         CFG_CPUTYPE=powerpc
 526         ;;
 527
 528     powerpc64 | ppc64)
 529         CFG_CPUTYPE=powerpc64
 530         ;;
 531
 532     powerpc64le | ppc64le)
 533         CFG_CPUTYPE=powerpc64le
 534         ;;
 535
 536     s390x)
 537         CFG_CPUTYPE=s390x
 538         ;;
 539
 540     x86_64 | x86-64 | x64 | amd64)
 541         CFG_CPUTYPE=x86_64
 542         ;;
 543
 544     BePC)
 545         CFG_CPUTYPE=i686
 546         ;;
 547
 548     *)
 549         err "unknown CPU type: $CFG_CPUTYPE"
 550 esac
 551
 552 # Detect 64 bit linux systems with 32 bit userland and force 32 bit compilation
 553 if [ $CFG_OSTYPE = unknown-linux-gnu -a $CFG_CPUTYPE = x86_64 ]
 554 then
 555     # $SHELL does not exist in standard 'sh', so probably only exists
 556     # if configure is running in an interactive bash shell. /usr/bin/env
 557     # exists *everywhere*.
 558     BIN_TO_PROBE="$SHELL"
 559     if [ ! -r "$BIN_TO_PROBE" ]; then
 560         if [ -r "/usr/bin/env" ]; then
 561             BIN_TO_PROBE="/usr/bin/env"
 562         else
 563             warn "Cannot check if the userland is i686 or x86_64"
 564         fi
 565     fi
 566     file -L "$BIN_TO_PROBE" | grep -q "x86[_-]64"
 567     if [ $? != 0 ]; then
 568         msg "i686 userland on x86_64 Linux kernel"
 569         CFG_CPUTYPE=i686
 570     fi
 571 fi
 572
 573
 574 DEFAULT_BUILD="${CFG_CPUTYPE}-${CFG_OSTYPE}"
 575
 576 CFG_SRC_DIR="$(abs_path $(dirname $0))/"
 577 CFG_SRC_DIR_RELATIVE="$(dirname $0)/"
 578 CFG_BUILD_DIR="$(pwd)/"
 579 CFG_SELF="$0"
 580 CFG_CONFIGURE_ARGS="$@"
 581
 582
 583 case "${CFG_SRC_DIR}" in
 584     *\ * )
 585         err "The path to the rust source directory contains spaces, which is not supported"
 586         ;;
 587     *)
 588         ;;
 589 esac
 590
 591
 592 OPTIONS=""
 593 if [ "$HELP" -eq 1 ]
 594 then
 595     echo
 596     echo "Usage: $CFG_SELF [options]"
 597     echo
 598     echo "Options:"
 599     echo
 600 else
 601     msg "recreating config.tmp"
 602     echo '' >config.tmp
 603
 604     step_msg "processing $CFG_SELF args"
 605 fi
 606
 607 BOOL_OPTIONS=""
 608 VAL_OPTIONS=""
 609
 610 opt debug 0 "debug mode; disables optimization unless \`--enable-optimize\` given"
 611 opt valgrind 0 "run tests with valgrind (memcheck by default)"
 612 opt helgrind 0 "run tests with helgrind instead of memcheck"
 613 opt valgrind-rpass 1 "run rpass-valgrind tests with valgrind"
 614 opt docs     1 "build standard library documentation"
 615 opt compiler-docs     0 "build compiler documentation"
 616 opt optimize-tests 1 "build tests with optimizations"
 617 opt debuginfo-tests 0 "build tests with debugger metadata"
 618 opt quiet-tests 0 "enable quieter output when running tests"
 619 opt libcpp 1 "build llvm with libc++ instead of libstdc++ when using clang"
 620 opt llvm-assertions 0 "build LLVM with assertions"
 621 opt debug-assertions 0 "build with debugging assertions"
 622 opt fast-make 0 "use .gitmodules as timestamp for submodule deps"
 623 opt ccache 0 "invoke gcc/clang via ccache to reuse object files between builds"
 624 opt sccache 0 "invoke gcc/clang via sccache to reuse object files between builds"
 625 opt local-rust 0 "use an installed rustc rather than downloading a snapshot"
 626 opt local-rebuild 0 "assume local-rust matches the current version, for rebuilds; implies local-rust, and is implied if local-rust already matches the current version"
 627 opt llvm-static-stdcpp 0 "statically link to libstdc++ for LLVM"
 628 opt llvm-link-shared 0 "prefer shared linking to LLVM (llvm-config --link-shared)"
 629 opt rpath 1 "build rpaths into rustc itself"
 630 opt stage0-landing-pads 1 "enable landing pads during bootstrap with stage0"
 631 # This is used by the automation to produce single-target nightlies
 632 opt dist-host-only 0 "only install bins for the host architecture"
 633 opt inject-std-version 1 "inject the current compiler version of libstd into programs"
 634 opt llvm-version-check 1 "check if the LLVM version is supported, build anyway"
 635 opt rustbuild 1 "use the rust and cargo based build system"
 636 opt codegen-tests 1 "run the src/test/codegen tests"
 637 opt option-checking 1 "complain about unrecognized options in this configure script"
 638 opt ninja 0 "build LLVM using the Ninja generator (for MSVC, requires building in the correct environment)"
 639 opt vendor 0 "enable usage of vendored Rust crates"
 640
 641 # Optimization and debugging options. These may be overridden by the release channel, etc.
 642 opt_nosave optimize 1 "build optimized rust code"
 643 opt_nosave optimize-cxx 1 "build optimized C++ code"
 644 opt_nosave optimize-llvm 1 "build optimized LLVM"
 645 opt_nosave llvm-assertions 0 "build LLVM with assertions"
 646 opt_nosave debug-assertions 0 "build with debugging assertions"
 647 opt_nosave llvm-release-debuginfo 0 "build LLVM with debugger metadata"
 648 opt_nosave debuginfo 0 "build with debugger metadata"
 649 opt_nosave debuginfo-lines 0 "build with line number debugger metadata"
 650 opt_nosave debuginfo-only-std 0 "build only libstd with debugging information"
 651 opt_nosave debug-jemalloc 0 "build jemalloc with --enable-debug --enable-fill"
 652
 653 valopt localstatedir "/var/lib" "local state directory"
 654 valopt sysconfdir "/etc" "install system configuration files"
 655
 656 valopt datadir "${CFG_PREFIX}/share" "install data"
 657 valopt infodir "${CFG_PREFIX}/share/info" "install additional info"
 658 valopt llvm-root "" "set LLVM root"
 659 valopt python "" "set path to python"
 660 valopt jemalloc-root "" "set directory where libjemalloc_pic.a is located"
 661 valopt build "${DEFAULT_BUILD}" "GNUs ./configure syntax LLVM build triple"
 662 valopt android-cross-path "" "Android NDK standalone path (deprecated)"
 663 valopt i686-linux-android-ndk "" "i686-linux-android NDK standalone path"
 664 valopt arm-linux-androideabi-ndk "" "arm-linux-androideabi NDK standalone path"
 665 valopt armv7-linux-androideabi-ndk "" "armv7-linux-androideabi NDK standalone path"
 666 valopt aarch64-linux-android-ndk "" "aarch64-linux-android NDK standalone path"
 667 valopt nacl-cross-path  "" "NaCl SDK path (Pepper Canary is recommended). Must be absolute!"
 668 valopt musl-root "/usr/local" "MUSL root installation directory (deprecated)"
 669 valopt musl-root-x86_64 "" "x86_64-unknown-linux-musl install directory"
 670 valopt musl-root-i686 "" "i686-unknown-linux-musl install directory"
 671 valopt musl-root-arm "" "arm-unknown-linux-musleabi install directory"
 672 valopt musl-root-armhf "" "arm-unknown-linux-musleabihf install directory"
 673 valopt musl-root-armv7 "" "armv7-unknown-linux-musleabihf install directory"
 674 valopt extra-filename "" "Additional data that is hashed and passed to the -C extra-filename flag"
 675
 676 if [ -e ${CFG_SRC_DIR}.git ]
 677 then
 678     valopt release-channel "dev" "the name of the release channel to build"
 679 else
 680     # If we have no git directory then we are probably a tarball distribution
 681     # and should default to stable channel - Issue 28322
 682     probe CFG_GIT          git
 683     msg "git: no git directory. Changing default release channel to stable"
 684     valopt release-channel "stable" "the name of the release channel to build"
 685 fi
 686
 687 # Used on systems where "cc" and "ar" are unavailable
 688 valopt default-linker "cc" "the default linker"
 689 valopt default-ar     "ar" "the default ar"
 690
 691 # Many of these are saved below during the "writing configuration" step
 692 # (others are conditionally saved).
 693 opt_nosave manage-submodules 1 "let the build manage the git submodules"
 694 opt_nosave clang 0 "prefer clang to gcc for building the runtime"
 695 opt_nosave jemalloc 1 "build liballoc with jemalloc"
 696 opt elf-tls 1 "elf thread local storage on platforms where supported"
 697
 698 valopt_nosave prefix "/usr/local" "set installation prefix"
 699 valopt_nosave local-rust-root "/usr/local" "set prefix for local rust binary"
 700 valopt_nosave host "${CFG_BUILD}" "GNUs ./configure syntax LLVM host triples"
 701 valopt_nosave target "${CFG_HOST}" "GNUs ./configure syntax LLVM target triples"
 702 valopt_nosave mandir "${CFG_PREFIX}/share/man" "install man pages in PATH"
 703 valopt_nosave docdir "${CFG_PREFIX}/share/doc/rust" "install documentation in PATH"
 704
 705 # On Windows this determines root of the subtree for target libraries.
 706 # Host runtime libs always go to 'bin'.
 707 valopt libdir "${CFG_PREFIX}/lib" "install libraries"
 708
 709 case "$CFG_LIBDIR" in
 710     "$CFG_PREFIX"/*) CAT_INC=2;;
 711     "$CFG_PREFIX"*)  CAT_INC=1;;
 712     *)
 713         err "libdir must begin with the prefix. Use --prefix to set it accordingly.";;
 714 esac
 715
 716 CFG_LIBDIR_RELATIVE=`echo ${CFG_LIBDIR} | cut -c$((${#CFG_PREFIX}+${CAT_INC}))-`
 717
 718 if [ $HELP -eq 1 ]
 719 then
 720     echo
 721     exit 0
 722 fi
 723
 724 # Validate Options
 725 if [ -z "$CFG_DISABLE_OPTION_CHECKING" ]
 726 then
 727     step_msg "validating $CFG_SELF args"
 728     validate_opt
 729 fi
 730
 731 # Validate the release channel, and configure options
 732 case "$CFG_RELEASE_CHANNEL" in
 733     nightly )
 734         msg "overriding settings for $CFG_RELEASE_CHANNEL"
 735         CFG_ENABLE_LLVM_ASSERTIONS=1
 736         # FIXME(stage0) re-enable this on the next stage0 now that #35566 is
 737         # fixed
 738         case "$CFG_BUILD" in
 739           *-pc-windows-gnu)
 740             ;;
 741           *)
 742             CFG_ENABLE_DEBUGINFO_LINES=1
 743             CFG_ENABLE_DEBUGINFO_ONLY_STD=1
 744             ;;
 745         esac
 746
 747         ;;
 748     beta | stable)
 749         msg "overriding settings for $CFG_RELEASE_CHANNEL"
 750         case "$CFG_BUILD" in
 751           *-pc-windows-gnu)
 752             ;;
 753           *)
 754             CFG_ENABLE_DEBUGINFO_LINES=1
 755             CFG_ENABLE_DEBUGINFO_ONLY_STD=1
 756             ;;
 757         esac
 758         ;;
 759     dev)
 760         ;;
 761     *)
 762         err "release channel must be 'dev', 'nightly', 'beta' or 'stable'"
 763         ;;
 764 esac
 765
 766 # Adjust perf and debug options for debug mode
 767 if [ -n "$CFG_ENABLE_DEBUG" ]; then
 768     msg "debug mode enabled, setting performance options"
 769     if [ -z "$CFG_ENABLE_OPTIMIZE_PROVIDED" ]; then
 770         msg "optimization not explicitly enabled, disabling optimization"
 771         CFG_DISABLE_OPTIMIZE=1
 772         CFG_DISABLE_OPTIMIZE_CXX=1
 773     fi
 774
 775     # Set following variables to 1 unless setting already provided
 776     enable_if_not_disabled debug-assertions
 777     enable_if_not_disabled debug-jemalloc
 778     enable_if_not_disabled debuginfo
 779     enable_if_not_disabled llvm-assertions
 780 fi
 781
 782 # OK, now write the debugging options
 783 if [ -n "$CFG_DISABLE_OPTIMIZE" ]; then putvar CFG_DISABLE_OPTIMIZE; fi
 784 if [ -n "$CFG_DISABLE_OPTIMIZE_CXX" ]; then putvar CFG_DISABLE_OPTIMIZE_CXX; fi
 785 if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then putvar CFG_DISABLE_OPTIMIZE_LLVM; fi
 786 if [ -n "$CFG_ENABLE_LLVM_ASSERTIONS" ]; then putvar CFG_ENABLE_LLVM_ASSERTIONS; fi
 787 if [ -n "$CFG_ENABLE_DEBUG_ASSERTIONS" ]; then putvar CFG_ENABLE_DEBUG_ASSERTIONS; fi
 788 if [ -n "$CFG_ENABLE_LLVM_RELEASE_DEBUGINFO" ]; then putvar CFG_ENABLE_LLVM_RELEASE_DEBUGINFO; fi
 789 if [ -n "$CFG_ENABLE_DEBUGINFO" ]; then putvar CFG_ENABLE_DEBUGINFO; fi
 790 if [ -n "$CFG_ENABLE_DEBUGINFO_LINES" ]; then putvar CFG_ENABLE_DEBUGINFO_LINES; fi
 791 if [ -n "$CFG_ENABLE_DEBUGINFO_ONLY_STD" ]; then putvar CFG_ENABLE_DEBUGINFO_ONLY_STD; fi
 792 if [ -n "$CFG_ENABLE_DEBUG_JEMALLOC" ]; then putvar CFG_ENABLE_DEBUG_JEMALLOC; fi
 793
 794 step_msg "looking for build programs"
 795
 796 probe_need CFG_CURL curl
 797 if [ -z "$CFG_PYTHON_PROVIDED" ]; then
 798     probe_need CFG_PYTHON      python2.7 python2 python
 799 fi
 800
 801 python_version=$($CFG_PYTHON -V 2>&1)
 802 if [ $(echo $python_version | grep -c '^Python 2\.7') -ne 1 ]; then
 803     err "Found $python_version, but Python 2.7 is required"
 804 fi
 805
 806 # If we have no git directory then we are probably a tarball distribution
 807 # and shouldn't attempt to load submodules
 808 if [ ! -e ${CFG_SRC_DIR}.git ]
 809 then
 810     probe CFG_GIT          git
 811     msg "git: no git directory. disabling submodules"
 812     CFG_DISABLE_MANAGE_SUBMODULES=1
 813 else
 814     probe_need CFG_GIT     git
 815 fi
 816
 817 # Use `md5sum` on GNU platforms, or `md5 -q` on BSD
 818 probe CFG_MD5              md5
 819 probe CFG_MD5SUM           md5sum
 820 if [ -n "$CFG_MD5" ]
 821 then
 822     CFG_HASH_COMMAND="$CFG_MD5 -q | cut -c 1-8"
 823 elif [ -n "$CFG_MD5SUM" ]
 824 then
 825     CFG_HASH_COMMAND="$CFG_MD5SUM | cut -c 1-8"
 826 else
 827     err 'could not find one of: md5 md5sum'
 828 fi
 829 putvar CFG_HASH_COMMAND
 830
 831 probe CFG_CLANG            clang++
 832 probe CFG_CCACHE           ccache
 833 probe CFG_GCC              gcc
 834 probe CFG_LD               ld
 835 probe CFG_VALGRIND         valgrind
 836 probe CFG_PERF             perf
 837 probe CFG_ISCC             iscc
 838 probe CFG_ANTLR4           antlr4
 839 probe CFG_GRUN             grun
 840 probe CFG_FLEX             flex
 841 probe CFG_BISON            bison
 842 probe CFG_GDB              gdb
 843 probe CFG_LLDB             lldb
 844
 845 if [ -n "$CFG_ENABLE_NINJA" ]
 846 then
 847   probe CFG_NINJA            ninja
 848   if [ -z "$CFG_NINJA" ]
 849   then
 850     # On Debian and Fedora, the `ninja` binary is an IRC bot, so the build tool was
 851     # renamed. Handle this case.
 852     probe CFG_NINJA            ninja-build
 853   fi
 854 fi
 855
 856 # For building LLVM
 857 if [ -z "$CFG_LLVM_ROOT" ]
 858 then
 859   probe_need CFG_CMAKE cmake
 860 fi
 861
 862 # On MacOS X, invoking `javac` pops up a dialog if the JDK is not
 863 # installed. Since `javac` is only used if `antlr4` is available,
 864 # probe for it only in this case.
 865 if [ -n "$CFG_ANTLR4" ]
 866 then
 867    CFG_ANTLR4_JAR="\"$(find /usr/ -name antlr-complete.jar 2>/dev/null | head -n 1)\""
 868    if [ "x" = "x$CFG_ANTLR4_JAR" ]
 869    then
 870      CFG_ANTLR4_JAR="\"$(find ~ -name antlr-complete.jar 2>/dev/null | head -n 1)\""
 871    fi
 872    putvar CFG_ANTLR4_JAR      $CFG_ANTLR4_JAR
 873    probe CFG_JAVAC            javac
 874 fi
 875
 876 # the valgrind rpass tests will fail if you don't have a valgrind, but they're
 877 # only disabled if you opt out.
 878 if [ -z "$CFG_VALGRIND" ]
 879 then
 880     # If the user has explicitly asked for valgrind tests, then fail
 881     if [ -n "$CFG_ENABLE_VALGRIND" ] && [ -n "$CFG_ENABLE_VALGRIND_PROVIDED" ]
 882     then
 883         err "No valgrind present, but valgrind tests explicitly requested"
 884     else
 885         CFG_DISABLE_VALGRIND_RPASS=1
 886         putvar CFG_DISABLE_VALGRIND_RPASS
 887     fi
 888 fi
 889
 890 if [ -n "$CFG_LLDB" ]
 891 then
 892     # Store LLDB's version
 893     CFG_LLDB_VERSION=$($CFG_LLDB --version 2>/dev/null | head -1)
 894     putvar CFG_LLDB_VERSION
 895
 896     # If CFG_LLDB_PYTHON_DIR is not already set from the outside and valid, try to read it from
 897     # LLDB via the -P commandline options.
 898     if [ -z "$CFG_LLDB_PYTHON_DIR" ] || [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 899     then
 900         CFG_LLDB_PYTHON_DIR=$($CFG_LLDB -P)
 901
 902         # If CFG_LLDB_PYTHON_DIR is not a valid directory, set it to something more readable
 903         if [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 904         then
 905             CFG_LLDB_PYTHON_DIR="LLDB_PYTHON_DIRECTORY_NOT_FOUND"
 906         fi
 907
 908         putvar CFG_LLDB_PYTHON_DIR
 909     fi
 910 fi
 911
 912 # LLDB tests on OSX require /usr/bin/python, not something like Homebrew's
 913 # /usr/local/bin/python. We're loading a compiled module for LLDB tests which is
 914 # only compatible with the system.
 915 case $CFG_BUILD in
 916     *-apple-darwin)
 917         CFG_LLDB_PYTHON=/usr/bin/python
 918         ;;
 919     *)
 920         CFG_LLDB_PYTHON=$CFG_PYTHON
 921         ;;
 922 esac
 923 putvar CFG_LLDB_PYTHON
 924
 925 step_msg "looking for target specific programs"
 926
 927 probe CFG_ADB        adb
 928
 929 BIN_SUF=
 930 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ]
 931 then
 932     BIN_SUF=.exe
 933 fi
 934
 935 # --enable-local-rebuild implies --enable-local-rust too
 936 if [ -n "$CFG_ENABLE_LOCAL_REBUILD" ]
 937 then
 938     if [ -z "$CFG_ENABLE_LOCAL_RUST" ]
 939     then
 940         CFG_ENABLE_LOCAL_RUST=1
 941         putvar CFG_ENABLE_LOCAL_RUST
 942     fi
 943 fi
 944
 945 if [ -n "$CFG_ENABLE_LOCAL_RUST" ]
 946 then
 947     system_rustc=$(which rustc)
 948     if [ -f ${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF} ]
 949     then
 950         : # everything already configured
 951     elif [ -n "$system_rustc" ]
 952     then
 953         # we assume that rustc is in a /bin directory
 954         CFG_LOCAL_RUST_ROOT=${system_rustc%/bin/rustc}
 955     else
 956         err "no local rust to use"
 957     fi
 958
 959     CMD="${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF}"
 960     LRV=`LD_LIBRARY_PATH=${CFG_LOCAL_RUST_ROOT}/lib $CMD --version`
 961     if [ $? -ne 0 ]
 962     then
 963         step_msg "failure while running $CMD --version"
 964         exit 1
 965     fi
 966     step_msg "using rustc at: ${CFG_LOCAL_RUST_ROOT} with version: $LRV"
 967     putvar CFG_LOCAL_RUST_ROOT
 968 fi
 969
 970 # Force bitrig to build with clang; gcc doesn't like us there
 971 if [ $CFG_OSTYPE = unknown-bitrig ]
 972 then
 973     step_msg "on Bitrig, forcing use of clang"
 974     CFG_ENABLE_CLANG=1
 975 fi
 976
 977 # default gcc version under OpenBSD maybe too old, try using egcc, which is a
 978 # gcc version from ports
 979 if [ $CFG_OSTYPE = unknown-openbsd ]
 980 then
 981     if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
 982         step_msg "older GCC found, try with egcc instead"
 983
 984         # probe again but using egcc
 985         probe CFG_GCC egcc
 986
 987         # and use egcc/eg++ for CC/CXX too if it was found
 988         # (but user setting has priority)
 989         if [ -n "$CFG_GCC" ]; then
 990             CC="${CC:-egcc}"
 991             CXX="${CXX:-eg++}"
 992         fi
 993     fi
 994 fi
 995
 996 # OS X 10.9, gcc is actually clang. This can cause some confusion in the build
 997 # system, so if we find that gcc is clang, we should just use clang directly.
 998 if [ $CFG_OSTYPE = apple-darwin -a -z "$CFG_ENABLE_CLANG" ]
 999 then
1000     CFG_OSX_GCC_VERSION=$("$CFG_GCC" --version 2>&1 | grep "Apple LLVM version")
1001     if [ $? -eq 0 ]
1002     then
1003         step_msg "on OS X >=10.9, forcing use of clang"
1004         CFG_ENABLE_CLANG=1
1005     else
1006         if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
1007             step_msg "older GCC found, using clang instead"
1008             CFG_ENABLE_CLANG=1
1009         else
1010             # on OS X, with xcode 5 and newer, certain developers may have
1011             # cc, gcc and g++ point to a  mixture of clang and gcc
1012             # if so, this will create very strange build errors
1013             # this last stanza is to detect some such problems and save the future rust
1014             # contributor some time solving that issue.
1015             # this detection could be generalized to other OSes aside from OS X
1016             # but the issue seems most likely to happen on OS X
1017
1018             chk_cc () {
1019                 $1 --version 2> /dev/null | grep -q $2
1020             }
1021             # check that gcc, cc and g++ all point to the same compiler.
1022             # note that for xcode 5, g++ points to clang, not clang++
1023             if !((chk_cc gcc clang  && chk_cc g++ clang) ||
1024                 (chk_cc gcc gcc  &&( chk_cc g++ g++ || chk g++ gcc))); then
1025                 err "the gcc and g++ in your path point to different compilers.
1026     Check which versions are in your path with gcc --version and g++ --version.
1027     To resolve this problem, either fix your PATH  or run configure with --enable-clang"
1028             fi
1029
1030         fi
1031     fi
1032 fi
1033
1034 # If the clang isn't already enabled, check for GCC, and if it is missing, turn
1035 # on clang as a backup.
1036 if [ -z "$CFG_ENABLE_CLANG" ]
1037 then
1038   CFG_GCC_VERSION=$("$CFG_GCC" --version 2>&1)
1039   if [ $? -ne 0 ]
1040   then
1041     step_msg "GCC not installed, will try using Clang"
1042     CFG_ENABLE_CLANG=1
1043   fi
1044 fi
1045
1046 # Okay, at this point, we have made up our minds about whether we are
1047 # going to force CFG_ENABLE_CLANG or not; save the setting if so.
1048 if [ -n "$CFG_ENABLE_CLANG" ]
1049 then
1050     putvar CFG_ENABLE_CLANG
1051 fi
1052
1053 if [ -z "$CFG_DISABLE_LIBCPP" -a -n "$CFG_ENABLE_CLANG" ]
1054 then
1055     CFG_USING_LIBCPP="1"
1056 else
1057     CFG_USING_LIBCPP="0"
1058 fi
1059
1060 # Same with jemalloc.  save the setting here.
1061 if [ -n "$CFG_DISABLE_JEMALLOC" ]
1062 then
1063     putvar CFG_DISABLE_JEMALLOC
1064 fi
1065
1066 if [ -n "$CFG_LLVM_ROOT" -a -z "$CFG_DISABLE_LLVM_VERSION_CHECK" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
1067 then
1068     step_msg "using custom LLVM at $CFG_LLVM_ROOT"
1069
1070     LLVM_CONFIG="$CFG_LLVM_ROOT/bin/llvm-config"
1071     LLVM_VERSION=$($LLVM_CONFIG --version)
1072
1073     case $LLVM_VERSION in
1074         (3.[7-9]*)
1075             msg "found ok version of LLVM: $LLVM_VERSION"
1076             ;;
1077         (*)
1078             err "bad LLVM version: $LLVM_VERSION, need >=3.7"
1079             ;;
1080     esac
1081
1082     if "$CFG_LLVM_ROOT/bin/llvm-mc" -help | grep -- "-relocation-model"; then
1083         msg "found older llvm-mc"
1084         CFG_LLVM_MC_HAS_RELOCATION_MODEL=1
1085         putvar CFG_LLVM_MC_HAS_RELOCATION_MODEL
1086     fi
1087 fi
1088
1089 # Even when the user overrides the choice of CC, still try to detect
1090 # clang to disable some clang-specific warnings.  We here draw a
1091 # distinction between:
1092 #
1093 #  CFG_ENABLE_CLANG : passed --enable-clang, or host "requires" clang,
1094 #  CFG_USING_CLANG : compiler (clang / gcc / $CC) looks like clang.
1095 #
1096 # This distinction is important because there are some safeguards we
1097 # would prefer to skip when merely CFG_USING_CLANG is set; but when
1098 # CFG_ENABLE_CLANG is set, that indicates that we are opting into
1099 # running such safeguards.
1100
1101 if [ -n "$CC" ]
1102 then
1103     msg "skipping compiler inference steps; using provided CC=$CC"
1104     CFG_CC="$CC"
1105
1106     CFG_OSX_CC_VERSION=$("$CFG_CC" --version 2>&1 | grep "clang")
1107     if [ $? -eq 0 ]
1108     then
1109         step_msg "note, user-provided CC looks like clang; CC=$CC."
1110         CFG_USING_CLANG=1
1111         putvar CFG_USING_CLANG
1112     fi
1113 else
1114     if [ -n "$CFG_ENABLE_CLANG" ]
1115     then
1116         if [ -z "$CFG_CLANG" ]
1117         then
1118             err "clang requested but not found"
1119         fi
1120         CFG_CC="$CFG_CLANG"
1121         CFG_USING_CLANG=1
1122         putvar CFG_USING_CLANG
1123     else
1124         CFG_CC="gcc"
1125     fi
1126 fi
1127
1128 if [ -n "$CFG_ENABLE_CLANG" ]
1129 then
1130     case "$CC" in
1131         (''|*clang)
1132         if [ -z "$CC" ]
1133         then
1134             CFG_CC="clang"
1135             CFG_CXX="clang++"
1136         fi
1137     esac
1138 fi
1139
1140 if [ -n "$CFG_ENABLE_CCACHE" ]
1141 then
1142     if [ -z "$CFG_CCACHE" ]
1143     then
1144         err "ccache requested but not found"
1145     fi
1146
1147     CFG_CC="ccache $CFG_CC"
1148 fi
1149
1150 if [ -z "$CC" -a -z "$CFG_ENABLE_CLANG" -a -z "$CFG_GCC" ]
1151 then
1152     err "either clang or gcc is required"
1153 fi
1154
1155 # All safeguards based on $CFG_ENABLE_CLANG should occur before this
1156 # point in the script; after this point, script logic should inspect
1157 # $CFG_USING_CLANG rather than $CFG_ENABLE_CLANG.
1158
1159 # Set CFG_{CC,CXX,CPP,CFLAGS,CXXFLAGS,LDFLAGS}
1160 envopt CC
1161 envopt CXX
1162 envopt CPP
1163 envopt CFLAGS
1164 envopt CXXFLAGS
1165 envopt LDFLAGS
1166
1167 # stdc++ name in use
1168 # used to manage non-standard name (on OpenBSD for example)
1169 program_transform_name=$($CFG_CC -v 2>&1 | sed -n "s/.*--program-transform-name='\([^']*\)'.*/\1/p")
1170 CFG_STDCPP_NAME=$(echo "stdc++" | sed "${program_transform_name}")
1171 putvar CFG_STDCPP_NAME
1172
1173 # a little post-processing of various config values
1174 CFG_PREFIX=${CFG_PREFIX%/}
1175 CFG_MANDIR=${CFG_MANDIR%/}
1176 CFG_DOCDIR=${CFG_DOCDIR%/}
1177 CFG_HOST="$(echo $CFG_HOST | tr ',' ' ')"
1178 CFG_TARGET="$(echo $CFG_TARGET | tr ',' ' ')"
1179 CFG_SUPPORTED_TARGET=""
1180 for target_file in ${CFG_SRC_DIR}mk/cfg/*.mk; do
1181   CFG_SUPPORTED_TARGET="${CFG_SUPPORTED_TARGET} $(basename "$target_file" .mk)"
1182 done
1183
1184 # copy build-triples to host-triples so that builds are a subset of hosts
1185 V_TEMP=""
1186 for i in $CFG_BUILD $CFG_HOST;
1187 do
1188    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1189 done
1190 CFG_HOST=$V_TEMP
1191
1192 # copy host-triples to target-triples so that hosts are a subset of targets
1193 V_TEMP=""
1194 for i in $CFG_HOST $CFG_TARGET;
1195 do
1196    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1197 done
1198 CFG_TARGET=$V_TEMP
1199
1200 # check target-specific tool-chains
1201 for i in $CFG_TARGET
1202 do
1203     L_CHECK=false
1204     for j in $CFG_SUPPORTED_TARGET
1205     do
1206         if [ $i = $j ]
1207         then
1208             L_CHECK=true
1209         fi
1210     done
1211
1212     if [ $L_CHECK = false ]
1213     then
1214         err "unsupported target triples \"$i\" found"
1215     fi
1216
1217     case $i in
1218         *android*)
1219             case $i in
1220                 armv7-linux-androideabi)
1221                     cmd_prefix="arm-linux-androideabi"
1222                     ;;
1223                 *)
1224                     cmd_prefix=$i
1225                     ;;
1226             esac
1227
1228             upper_snake_target=$(echo "$i" | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
1229             eval ndk=\$"CFG_${upper_snake_target}_NDK"
1230             if [ -z "$ndk" ]
1231             then
1232                 ndk=$CFG_ANDROID_CROSS_PATH
1233                 eval "CFG_${upper_snake_target}_NDK"=$CFG_ANDROID_CROSS_PATH
1234                 warn "generic/default Android NDK option is deprecated (use --$i-ndk option instead)"
1235             fi
1236
1237             # Perform a basic sanity check of the NDK
1238             for android_ndk_tool in "$ndk/bin/$cmd_prefix-gcc" "$ndk/bin/$cmd_prefix-g++" "$ndk/bin/$cmd_prefix-ar"
1239             do
1240                 if [ ! -f $android_ndk_tool ]
1241                 then
1242                     err "NDK tool $android_ndk_tool not found (bad or missing --$i-ndk option?)"
1243                 fi
1244             done
1245             ;;
1246         *-unknown-nacl)
1247             if [ -z "$CFG_NACL_CROSS_PATH" ]
1248             then
1249                 err "I need the NaCl SDK path! (use --nacl-cross-path)"
1250             fi
1251             ;;
1252         arm-apple-darwin)
1253             if [ $CFG_OSTYPE != apple-darwin ]
1254             then
1255                 err "The iOS target is only supported on Mac OS X"
1256             fi
1257             ;;
1258
1259         *-msvc)
1260             # There are three builds of cmake on windows: MSVC, MinGW and Cygwin
1261             # The Cygwin build does not have generators for Visual Studio, so
1262             # detect that here and error.
1263             if ! "$CFG_CMAKE" --help | sed -n '/^Generators/,$p' | grep 'Visual Studio' > /dev/null
1264             then
1265                 err "
1266
1267 cmake does not support Visual Studio generators.
1268
1269 This is likely due to it being an msys/cygwin build of cmake, \
1270 rather than the required windows version, built using MinGW \
1271 or Visual Studio.
1272
1273 If you are building under msys2 try installing the mingw-w64-x86_64-cmake \
1274 package instead of cmake:
1275
1276 $ pacman -R cmake && pacman -S mingw-w64-x86_64-cmake
1277 "
1278             fi
1279
1280             # Use the REG program to figure out where VS is installed
1281             # We need to figure out where cl.exe and link.exe are, so we do some
1282             # munging and some probing here. We also look for the default
1283             # INCLUDE and LIB variables for MSVC so we can set those in the
1284             # build system as well.
1285             install=$(cmd //c reg QUERY \
1286                        'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\14.0' \
1287                        -v InstallDir)
1288             if [ -z "$install" ]; then
1289               install=$(cmd //c reg QUERY \
1290                          'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\12.0' \
1291                          -v InstallDir)
1292             fi
1293             need_ok "couldn't find visual studio install root"
1294             CFG_MSVC_ROOT=$(echo "$install" | grep InstallDir | sed 's/.*REG_SZ[ ]*//')
1295             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1296             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1297             putvar CFG_MSVC_ROOT
1298
1299             case $i in
1300                 x86_64-*)
1301                     bits=x86_64
1302                     msvc_part=amd64
1303                     ;;
1304                 i*86-*)
1305                     bits=i386
1306                     msvc_part=
1307                     ;;
1308                 *)
1309                     err "can only target x86 targets for MSVC"
1310                     ;;
1311             esac
1312             bindir="${CFG_MSVC_ROOT}/VC/bin"
1313             if [ -n "$msvc_part" ]; then
1314                 bindir="$bindir/$msvc_part"
1315             fi
1316             eval CFG_MSVC_BINDIR_$bits="\"$bindir\""
1317             eval CFG_MSVC_CL_$bits="\"$bindir/cl.exe\""
1318             eval CFG_MSVC_LIB_$bits="\"$bindir/lib.exe\""
1319             eval CFG_MSVC_LINK_$bits="\"$bindir/link.exe\""
1320
1321             vcvarsall="${CFG_MSVC_ROOT}/VC/vcvarsall.bat"
1322             include_path=$(cmd //V:ON //c "$vcvarsall" $msvc_part \& echo !INCLUDE!)
1323             need_ok "failed to learn about MSVC's INCLUDE"
1324             lib_path=$(cmd //V:ON //c "$vcvarsall" $msvc_part \& echo !LIB!)
1325             need_ok "failed to learn about MSVC's LIB"
1326
1327             eval CFG_MSVC_INCLUDE_PATH_${bits}="\"$include_path\""
1328             eval CFG_MSVC_LIB_PATH_${bits}="\"$lib_path\""
1329
1330             putvar CFG_MSVC_BINDIR_${bits}
1331             putvar CFG_MSVC_CL_${bits}
1332             putvar CFG_MSVC_LIB_${bits}
1333             putvar CFG_MSVC_LINK_${bits}
1334             putvar CFG_MSVC_INCLUDE_PATH_${bits}
1335             putvar CFG_MSVC_LIB_PATH_${bits}
1336             ;;
1337
1338         *)
1339             ;;
1340     esac
1341 done
1342
1343 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ]
1344 then
1345     # There are some MSYS python builds which will auto-translate
1346     # windows-style paths to MSYS-style paths in Python itself.
1347     # Unfortunately this breaks LLVM's build system as somewhere along
1348     # the line LLVM prints a path into a file from Python and then CMake
1349     # later tries to interpret that path. If Python prints a MSYS path
1350     # and CMake tries to use it as a Windows path, you're gonna have a
1351     # Bad Time.
1352     #
1353     # Consequently here we try to detect when that happens and print an
1354     # error if it does.
1355     if $CFG_PYTHON -c 'import sys; print sys.argv[1]' `pwd` | grep '^/' > /dev/null
1356     then
1357         err "
1358
1359 python is silently translating windows paths to MSYS paths \
1360 and the build will fail if this python is used.
1361
1362 Either an official python install must be used or an \
1363 alternative python package in MinGW must be used.
1364
1365 If you are building under msys2 try installing the mingw-w64-x86_64-python2 \
1366 package instead of python2:
1367
1368 $ pacman -S mingw-w64-x86_64-python2
1369 "
1370     fi
1371 fi
1372
1373 if [ -n "$CFG_PERF" ]
1374 then
1375     HAVE_PERF_LOGFD=`$CFG_PERF stat --log-fd 2>&1 | grep 'unknown option'`
1376     if [ -z "$HAVE_PERF_LOGFD" ];
1377     then
1378         CFG_PERF_WITH_LOGFD=1
1379         putvar CFG_PERF_WITH_LOGFD
1380     fi
1381 fi
1382
1383 if [ -n "$CFG_DISABLE_RUSTBUILD" ]; then
1384
1385   step_msg "making directories"
1386
1387   for i in \
1388       doc doc/std doc/extra \
1389       dl tmp dist
1390   do
1391       make_dir $i
1392   done
1393
1394   for t in $CFG_HOST
1395   do
1396       make_dir $t/llvm
1397   done
1398
1399   for t in $CFG_HOST
1400   do
1401       make_dir $t/rustllvm
1402   done
1403
1404   for t in $CFG_TARGET
1405   do
1406     make_dir $t/rt
1407     for s in 0 1 2 3
1408     do
1409       make_dir $t/rt/stage$s
1410       make_dir $t/rt/jemalloc
1411       make_dir $t/rt/compiler-rt
1412       for i in                                          \
1413         isaac sync test \
1414         arch/i386 arch/x86_64 arch/arm arch/aarch64 arch/mips arch/powerpc
1415       do
1416         make_dir $t/rt/stage$s/$i
1417       done
1418     done
1419   done
1420
1421   for h in $CFG_HOST
1422   do
1423       for t in $CFG_TARGET
1424       do
1425           # host bin dir stage0
1426           make_dir $h/stage0/bin
1427
1428           # host lib dir stage0
1429           make_dir $h/stage0/lib
1430
1431           # host test dir stage0
1432           make_dir $h/stage0/test
1433
1434           # target bin dir stage0
1435           make_dir $h/stage0/lib/rustlib/$t/bin
1436
1437           # target lib dir stage0
1438           make_dir $h/stage0/lib/rustlib/$t/lib
1439
1440           for i in 1 2 3
1441           do
1442               # host bin dir
1443               make_dir $h/stage$i/bin
1444
1445               # host lib dir
1446               make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE
1447
1448               # host test dir
1449               make_dir $h/stage$i/test
1450
1451               # target bin dir
1452               make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/bin
1453
1454               # target lib dir
1455               make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/lib
1456           done
1457       done
1458
1459       make_dir $h/test/run-pass
1460       make_dir $h/test/run-pass-valgrind
1461       make_dir $h/test/run-pass-fulldeps
1462       make_dir $h/test/run-fail
1463       make_dir $h/test/run-fail-fulldeps
1464       make_dir $h/test/compile-fail
1465       make_dir $h/test/parse-fail
1466       make_dir $h/test/compile-fail-fulldeps
1467       make_dir $h/test/bench
1468       make_dir $h/test/perf
1469       make_dir $h/test/pretty
1470       make_dir $h/test/debuginfo-gdb
1471       make_dir $h/test/debuginfo-lldb
1472       make_dir $h/test/codegen
1473       make_dir $h/test/codegen-units
1474       make_dir $h/test/rustdoc
1475   done
1476
1477 fi
1478
1479 # Configure submodules
1480 step_msg "configuring submodules"
1481
1482 # Have to be in the top of src directory for this
1483 if [ -z "$CFG_DISABLE_MANAGE_SUBMODULES" ] && [ -n "$CFG_DISABLE_RUSTBUILD" ]
1484 then
1485     cd ${CFG_SRC_DIR}
1486
1487     msg "git: submodule sync"
1488     "${CFG_GIT}" submodule sync
1489
1490     msg "git: submodule init"
1491     "${CFG_GIT}" submodule init
1492
1493     # Disable submodules that we're not using
1494     if [ -n "${CFG_LLVM_ROOT}" ]; then
1495         msg "git: submodule deinit src/llvm"
1496         "${CFG_GIT}" submodule deinit src/llvm
1497     fi
1498     if [ -n "${CFG_JEMALLOC_ROOT}" ]; then
1499         msg "git: submodule deinit src/jemalloc"
1500         "${CFG_GIT}" submodule deinit src/jemalloc
1501     fi
1502
1503     msg "git: submodule update"
1504     "${CFG_GIT}" submodule update
1505     need_ok "git failed"
1506
1507     msg "git: submodule foreach sync"
1508     "${CFG_GIT}" submodule foreach --recursive 'if test -e .gitmodules; then git submodule sync; fi'
1509     need_ok "git failed"
1510
1511     msg "git: submodule foreach update"
1512     "${CFG_GIT}" submodule update --recursive
1513     need_ok "git failed"
1514
1515     # NB: this is just for the sake of getting the submodule SHA1 values
1516     # and status written into the build log.
1517     msg "git: submodule status"
1518     "${CFG_GIT}" submodule status --recursive
1519
1520     msg "git: submodule clobber"
1521     "${CFG_GIT}" submodule foreach --recursive git clean -dxf
1522     need_ok "git failed"
1523     "${CFG_GIT}" submodule foreach --recursive git checkout .
1524     need_ok "git failed"
1525
1526     cd ${CFG_BUILD_DIR}
1527 fi
1528
1529 # Do a sanity check that the submodule source exists. Because GitHub
1530 # automatically publishes broken tarballs that can't be disabled, and
1531 # people download them and try to use them.
1532 if [ ! -e "${CFG_SRC_DIR}/src/liblibc" ]; then
1533     err "some submodules are missing. Is this a broken tarball?
1534
1535 If you downloaded this tarball from the GitHub release pages at
1536 https://github.com/rust-lang/rust/releases,
1537 then please delete it and instead download the source from
1538 https://www.rust-lang.org/downloads.html"
1539
1540 fi
1541
1542 # Configure llvm, only if necessary
1543 step_msg "looking at LLVM"
1544 CFG_LLVM_SRC_DIR=${CFG_SRC_DIR}src/llvm/
1545 for t in $CFG_HOST
1546 do
1547     do_reconfigure=1
1548     is_msvc=0
1549     case "$t" in
1550         (*-msvc)
1551         is_msvc=1
1552         ;;
1553     esac
1554
1555     if [ -z "$CFG_DISABLE_RUSTBUILD" ]
1556     then
1557         msg "not configuring LLVM, rustbuild in use"
1558         do_reconfigure=0
1559     elif [ -z "$CFG_LLVM_ROOT" ]
1560     then
1561         LLVM_BUILD_DIR=${CFG_BUILD_DIR}$t/llvm
1562         LLVM_INST_DIR=$LLVM_BUILD_DIR
1563         # For some crazy reason the MSVC output dir is different than Unix
1564         if [ ${is_msvc} -ne 0 ]; then
1565             if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]
1566             then
1567                 # Just use LLVM straight from its build directory to
1568                 # avoid 'make install' time
1569                 LLVM_INST_DIR=$LLVM_BUILD_DIR/Debug
1570             else
1571                 LLVM_INST_DIR=$LLVM_BUILD_DIR/Release
1572             fi
1573         fi
1574     else
1575         msg "not reconfiguring LLVM, external LLVM root"
1576         # The user is using their own LLVM
1577         LLVM_BUILD_DIR=
1578         LLVM_INST_DIR=$CFG_LLVM_ROOT
1579         do_reconfigure=0
1580         # Check that LLVm FileCheck is available. Needed for the tests
1581         if [ -z "$CFG_DISABLE_CODEGEN_TESTS" ]; then
1582             need_cmd $LLVM_INST_DIR/bin/FileCheck
1583         fi
1584     fi
1585
1586     if [ ${do_reconfigure} -ne 0 ]
1587     then
1588     # because git is hilarious, it might have put the module index
1589     # in a couple places.
1590         index1="${CFG_SRC_DIR}.git/modules/src/llvm/index"
1591         index2="${CFG_SRC_DIR}src/llvm/.git/index"
1592         for index in ${index1} ${index2}
1593         do
1594             config_status="${LLVM_BUILD_DIR}/config.status"
1595             if test -e ${index} -a \
1596                     -e ${config_status} -a \
1597                     ${config_status} -nt ${index}
1598             then
1599                 msg "not reconfiguring LLVM, config.status is fresh"
1600                 do_reconfigure=0
1601             fi
1602         done
1603     fi
1604
1605     # We need the generator later on for compiler-rt even if LLVM's not built
1606     if [ -n "$CFG_NINJA" ]
1607     then
1608         generator="Ninja"
1609     elif [ ${is_msvc} -ne 0 ]
1610     then
1611         case "$CFG_MSVC_ROOT" in
1612             *14.0*)
1613                 generator="Visual Studio 14 2015"
1614                 ;;
1615             *12.0*)
1616                 generator="Visual Studio 12 2013"
1617                 ;;
1618             *)
1619                 err "can't determine generator for LLVM cmake"
1620                 ;;
1621         esac
1622         case "$t" in
1623             x86_64-*)
1624                 generator="$generator Win64"
1625                 ;;
1626             i686-*)
1627                 ;;
1628             *)
1629                 err "can only build LLVM for x86 platforms"
1630                 ;;
1631         esac
1632     else
1633         generator="Unix Makefiles"
1634     fi
1635     CFG_CMAKE_GENERATOR=$generator
1636     putvar CFG_CMAKE_GENERATOR
1637
1638     msg "configuring LLVM for $t"
1639
1640     LLVM_CFLAGS_32=""
1641     LLVM_CXXFLAGS_32=""
1642     LLVM_LDFLAGS_32=""
1643     LLVM_CFLAGS_64=""
1644     LLVM_CXXFLAGS_64=""
1645     LLVM_LDFLAGS_64=""
1646
1647     case "$CFG_CC" in
1648         ("ccache clang")
1649             LLVM_CXX_32="ccache"
1650             LLVM_CC_32="ccache"
1651             LLVM_CXX_32_ARG1="clang++"
1652             LLVM_CC_32_ARG1="clang"
1653             LLVM_CFLAGS_32="-Qunused-arguments"
1654             LLVM_CXXFLAGS_32="-Qunused-arguments"
1655
1656             LLVM_CXX_64="ccache"
1657             LLVM_CC_64="ccache"
1658             LLVM_CXX_64_ARG1="clang++"
1659             LLVM_CC_64_ARG1="clang"
1660             LLVM_CFLAGS_64="-Qunused-arguments"
1661             LLVM_CXXFLAGS_64="-Qunused-arguments"
1662             ;;
1663         ("clang")
1664             LLVM_CXX_32="clang++"
1665             LLVM_CC_32="clang"
1666             LLVM_CFLAGS_32="-Qunused-arguments"
1667             LLVM_CXXFLAGS_32="-Qunused-arguments"
1668
1669             LLVM_CXX_64="clang++"
1670             LLVM_CC_64="clang"
1671             LLVM_CFLAGS_64="-Qunused-arguments"
1672             LLVM_CXXFLAGS_64="-Qunused-arguments"
1673             ;;
1674         ("ccache gcc")
1675             LLVM_CXX_32="ccache"
1676             LLVM_CC_32="ccache"
1677             LLVM_CXX_32_ARG1="g++"
1678             LLVM_CC_32_ARG1="gcc"
1679
1680             LLVM_CXX_64="ccache"
1681             LLVM_CC_64="ccache"
1682             LLVM_CXX_64_ARG1="g++"
1683             LLVM_CC_64_ARG1="gcc"
1684             ;;
1685         ("gcc")
1686             if [ -z "$CFG_ENABLE_SCCACHE" ]; then
1687                 LLVM_CXX_32="g++"
1688                 LLVM_CC_32="gcc"
1689
1690                 LLVM_CXX_64="g++"
1691                 LLVM_CC_64="gcc"
1692             else
1693                 LLVM_CXX_32="sccache"
1694                 LLVM_CC_32="sccache"
1695                 LLVM_CXX_32_ARG1="g++"
1696                 LLVM_CC_32_ARG1="gcc"
1697
1698                 LLVM_CXX_64="sccache"
1699                 LLVM_CC_64="sccache"
1700                 LLVM_CXX_64_ARG1="g++"
1701                 LLVM_CC_64_ARG1="gcc"
1702             fi
1703             ;;
1704
1705         (*)
1706             msg "inferring LLVM_CXX/CC from CXX/CC = $CXX/$CC"
1707             if [ -n "$CFG_ENABLE_CCACHE" ]
1708             then
1709                 if [ -z "$CFG_CCACHE" ]
1710                 then
1711                     err "ccache requested but not found"
1712                 fi
1713
1714                 LLVM_CXX_32="ccache"
1715                 LLVM_CC_32="ccache"
1716                 LLVM_CXX_32_ARG1="$CXX"
1717                 LLVM_CC_32_ARG1="$CC"
1718
1719                 LLVM_CXX_64="ccache"
1720                 LLVM_CC_64="ccache"
1721                 LLVM_CXX_64_ARG1="$CXX"
1722                 LLVM_CC_64_ARG1="$CC"
1723             else
1724                 LLVM_CXX_32="$CXX"
1725                 LLVM_CC_32="$CC"
1726
1727                 LLVM_CXX_64="$CXX"
1728                 LLVM_CC_64="$CC"
1729             fi
1730
1731             ;;
1732     esac
1733
1734     case "$CFG_CPUTYPE" in
1735         (x86*)
1736             LLVM_CFLAGS_32="$LLVM_CFLAGS_32 -m32"
1737             LLVM_CXXFLAGS_32="$LLVM_CXXFLAGS_32 -m32"
1738             LLVM_LDFLAGS_32="$LLVM_LDFLAGS_32 -m32"
1739             ;;
1740     esac
1741
1742     if echo $t | grep -q x86_64
1743     then
1744         LLVM_CXX=$LLVM_CXX_64
1745         LLVM_CC=$LLVM_CC_64
1746         LLVM_CXX_ARG1=$LLVM_CXX_64_ARG1
1747         LLVM_CC_ARG1=$LLVM_CC_64_ARG1
1748         LLVM_CFLAGS=$LLVM_CFLAGS_64
1749         LLVM_CXXFLAGS=$LLVM_CXXFLAGS_64
1750         LLVM_LDFLAGS=$LLVM_LDFLAGS_64
1751     else
1752         LLVM_CXX=$LLVM_CXX_32
1753         LLVM_CC=$LLVM_CC_32
1754         LLVM_CXX_ARG1=$LLVM_CXX_32_ARG1
1755         LLVM_CC_ARG1=$LLVM_CC_32_ARG1
1756         LLVM_CFLAGS=$LLVM_CFLAGS_32
1757         LLVM_CXXFLAGS=$LLVM_CXXFLAGS_32
1758         LLVM_LDFLAGS=$LLVM_LDFLAGS_32
1759     fi
1760
1761     if [ "$CFG_USING_LIBCPP" != "0" ]; then
1762         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_LIBCXX=ON"
1763     fi
1764
1765     # Turn off things we don't need
1766     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_INCLUDE_TESTS=OFF"
1767     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_INCLUDE_EXAMPLES=OFF"
1768     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_INCLUDE_DOCS=OFF"
1769     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ZLIB=OFF"
1770     CMAKE_ARGS="$CMAKE_ARGS -DWITH_POLY=OFF"
1771     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_TERMINFO=OFF"
1772     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_LIBEDIT=OFF"
1773
1774     arch="$(echo "$t" | cut -d - -f 1)"
1775
1776     if [ "$arch" = i686 ]; then
1777         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_BUILD_32_BITS=ON"
1778     fi
1779
1780     if [ "$t" != "$CFG_BUILD" ]; then
1781         # see http://llvm.org/docs/HowToCrossCompileLLVM.html
1782         CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_CROSSCOMPILING=True"
1783         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_TARGET_ARCH=$arch"
1784         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_TABLEGEN=$CFG_BUILD_DIR/$CFG_BUILD/llvm/bin/llvm-tblgen"
1785         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_DEFAULT_TARGET_TRIPLE=$t"
1786     fi
1787
1788     # MSVC handles compiler business itself
1789     if [ ${is_msvc} -eq 0 ]; then
1790         CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_C_COMPILER=$LLVM_CC"
1791         CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_CXX_COMPILER=$LLVM_CXX"
1792         CMAKE_ARGS="$CMAKE_ARGS '-DCMAKE_C_FLAGS=$LLVM_CFLAGS'"
1793         CMAKE_ARGS="$CMAKE_ARGS '-DCMAKE_CXX_FLAGS=$LLVM_CXXFLAGS'"
1794         if [ -n "$LLVM_CC_ARG1" ]; then
1795             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_C_COMPILER_ARG1=$LLVM_CC_ARG1"
1796         fi
1797         if [ -n "$LLVM_CXX_ARG1" ]; then
1798             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_CXX_COMPILER_ARG1=$LLVM_CXX_ARG1"
1799         fi
1800         # FIXME: What about LDFLAGS?
1801     fi
1802
1803     if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then
1804         CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Debug"
1805     elif [ -n "$CFG_ENABLE_LLVM_RELEASE_DEBUGINFO" ]; then
1806         CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=RelWithDebInfo"
1807     else
1808         CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Release"
1809     fi
1810     if [ -z "$CFG_ENABLE_LLVM_ASSERTIONS" ]
1811     then
1812         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=OFF"
1813     else
1814         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=ON"
1815     fi
1816
1817     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_TARGETS_TO_BUILD='X86;ARM;AArch64;Mips;PowerPC;SystemZ;JSBackend;MSP430'"
1818     CMAKE_ARGS="$CMAKE_ARGS -G '$CFG_CMAKE_GENERATOR'"
1819     CMAKE_ARGS="$CMAKE_ARGS $CFG_LLVM_SRC_DIR"
1820
1821     if [ ${do_reconfigure} -ne 0 ]
1822     then
1823         msg "configuring LLVM for $t with cmake"
1824
1825         msg "configuring LLVM with:"
1826         msg "$CMAKE_ARGS"
1827
1828         (cd $LLVM_BUILD_DIR && eval "\"$CFG_CMAKE\"" $CMAKE_ARGS)
1829         need_ok "LLVM cmake configure failed"
1830     fi
1831
1832     # Construct variables for LLVM build and install directories for
1833     # each target. These will be named
1834     # CFG_LLVM_BUILD_DIR_${target_triple} but all the hyphens in
1835     # target_triple will be converted to underscore, because bash
1836     # variables can't contain hyphens. The makefile will then have to
1837     # convert back.
1838     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1839     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1840     eval ${CFG_LLVM_BUILD_DIR}="'$LLVM_BUILD_DIR'"
1841     eval ${CFG_LLVM_INST_DIR}="'$LLVM_INST_DIR'"
1842 done
1843
1844
1845 step_msg "writing configuration"
1846
1847 putvar CFG_SRC_DIR
1848 putvar CFG_SRC_DIR_RELATIVE
1849 putvar CFG_BUILD_DIR
1850 putvar CFG_OSTYPE
1851 putvar CFG_CPUTYPE
1852 putvar CFG_CONFIGURE_ARGS
1853 putvar CFG_PREFIX
1854 putvar CFG_HOST
1855 putvar CFG_TARGET
1856 putvar CFG_LIBDIR_RELATIVE
1857 putvar CFG_DISABLE_MANAGE_SUBMODULES
1858 putvar CFG_AARCH64_LINUX_ANDROID_NDK
1859 putvar CFG_ARM_LINUX_ANDROIDEABI_NDK
1860 putvar CFG_ARMV7_LINUX_ANDROIDEABI_NDK
1861 putvar CFG_I686_LINUX_ANDROID_NDK
1862 putvar CFG_NACL_CROSS_PATH
1863 putvar CFG_MANDIR
1864 putvar CFG_DOCDIR
1865 putvar CFG_USING_LIBCPP
1866
1867 # Avoid spurious warnings from clang by feeding it original source on
1868 # ccache-miss rather than preprocessed input.
1869 if [ -n "$CFG_ENABLE_CCACHE" ] && [ -n "$CFG_USING_CLANG" ]
1870 then
1871     CFG_CCACHE_CPP2=1
1872     putvar CFG_CCACHE_CPP2
1873 fi
1874
1875 if [ -n "$CFG_ENABLE_CCACHE" ]
1876 then
1877     CFG_CCACHE_BASEDIR=${CFG_SRC_DIR}
1878     putvar CFG_CCACHE_BASEDIR
1879 fi
1880
1881
1882 putvar CFG_LLVM_SRC_DIR
1883
1884 for t in $CFG_HOST
1885 do
1886     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1887     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1888     putvar $CFG_LLVM_BUILD_DIR
1889     putvar $CFG_LLVM_INST_DIR
1890 done
1891
1892 if [ -z "$CFG_DISABLE_RUSTBUILD" ]
1893 then
1894     INPUT_MAKEFILE=src/bootstrap/mk/Makefile.in
1895 else
1896     INPUT_MAKEFILE=Makefile.in
1897 fi
1898
1899 msg
1900 copy_if_changed ${CFG_SRC_DIR}${INPUT_MAKEFILE} ./Makefile
1901 move_if_changed config.tmp config.mk
1902 rm -f config.tmp
1903 touch config.stamp
1904
1905 if [ -z "$CFG_ENABLE_DEBUG" ]; then
1906     step_msg "configured in release mode. for development consider --enable-debug"
1907 else
1908     step_msg "complete"
1909 fi
1910
1911 if [ "$CFG_SRC_DIR" = `pwd` ]; then
1912     X_PY=x.py
1913 else
1914     X_PY=${CFG_SRC_DIR_RELATIVE}x.py
1915 fi
1916
1917 if [ -z "$CFG_DISABLE_RUSTBUILD" ]; then
1918     msg "NOTE you have now configured rust to use a rewritten build system"
1919     msg "     called rustbuild, and as a result this may have bugs that "
1920     msg "     you did not see before. If you experience any issues you can"
1921     msg "     go back to the old build system with --disable-rustbuild and"
1922     msg "     please feel free to report any bugs!"
1923     msg ""
1924     msg "run \`python ${X_PY} --help\`"
1925 else
1926     warn "the makefile-based build system is deprecated in favor of rustbuild"
1927     msg ""
1928     msg "It is recommended you avoid passing --disable-rustbuild to get your"
1929     msg "build working as the makefiles will be deleted on 2017-02-02. If you"
1930     msg "encounter bugs with rustbuild please file issues against rust-lang/rust"
1931     msg ""
1932     msg "run \`make help\`"
1933 fi
1934
1935 msg