configure

   1 #!/bin/sh
   2
   3 msg() {
   4     echo "configure: $*"
   5 }
   6
   7 step_msg() {
   8     msg
   9     msg "$1"
  10     msg
  11 }
  12
  13 warn() {
  14     echo "configure: WARNING: $1"
  15 }
  16
  17 err() {
  18     echo "configure: error: $1"
  19     exit 1
  20 }
  21
  22 run() {
  23     msg "$@"
  24     "$@"
  25 }
  26
  27 need_ok() {
  28     if [ $? -ne 0 ]
  29     then
  30         err "$1"
  31     fi
  32 }
  33
  34 need_cmd() {
  35     if command -v $1 >/dev/null 2>&1
  36     then msg "found program '$1'"
  37     else err "program '$1' is missing, please install it"
  38     fi
  39 }
  40
  41 make_dir() {
  42     if [ ! -d $1 ]
  43     then
  44         run mkdir -p $1
  45     fi
  46 }
  47
  48 copy_if_changed() {
  49     if cmp -s $1 $2
  50     then
  51         msg "leaving $2 unchanged"
  52     else
  53         run cp -f $1 $2
  54         chmod u-w $2 # make copied artifact read-only
  55     fi
  56 }
  57
  58 move_if_changed() {
  59     if cmp -s $1 $2
  60     then
  61         msg "leaving $2 unchanged"
  62     else
  63         run mv -f $1 $2
  64         chmod u-w $2 # make moved artifact read-only
  65     fi
  66 }
  67
  68 putvar() {
  69     local T
  70     eval T=\$$1
  71     eval TLEN=\${#$1}
  72     if [ $TLEN -gt 35 ]
  73     then
  74         printf "configure: %-20s := %.35s ...\n" $1 "$T"
  75     else
  76         printf "configure: %-20s := %s %s\n" $1 "$T" "$2"
  77     fi
  78     printf "%-20s := %s\n" $1 "$T" >>config.tmp
  79 }
  80
  81 putpathvar() {
  82     local T
  83     eval T=\$$1
  84     eval TLEN=\${#$1}
  85     if [ $TLEN -gt 35 ]
  86     then
  87         printf "configure: %-20s := %.35s ...\n" $1 "$T"
  88     else
  89         printf "configure: %-20s := %s %s\n" $1 "$T" "$2"
  90     fi
  91     if [ -z "$T" ]
  92     then
  93         printf "%-20s := \n" $1 >>config.tmp
  94     else
  95         printf "%-20s := \"%s\"\n" $1 "$T" >>config.tmp
  96     fi
  97 }
  98
  99 probe() {
 100     local V=$1
 101     shift
 102     local P
 103     local T
 104     for P
 105     do
 106         T=$(command -v $P 2>&1)
 107         if [ $? -eq 0 ]
 108         then
 109             VER0=$($P --version 2>/dev/null \
 110                 |  grep -o '[vV]\?[0-9][0-9.][a-z0-9.-]*' | head -1 )
 111             if [ $? -eq 0 -a "x${VER0}" != "x" ]
 112             then
 113               VER="($VER0)"
 114             else
 115               VER=""
 116             fi
 117             break
 118         else
 119             VER=""
 120             T=""
 121         fi
 122     done
 123     eval $V=\$T
 124     putpathvar $V "$VER"
 125 }
 126
 127 probe_need() {
 128     local V=$1
 129     probe $*
 130     eval VV=\$$V
 131     if [ -z "$VV" ]
 132     then
 133         err "needed, but unable to find any of: $*"
 134     fi
 135 }
 136
 137 validate_opt () {
 138     for arg in $CFG_CONFIGURE_ARGS
 139     do
 140         isArgValid=0
 141         for option in $BOOL_OPTIONS
 142         do
 143             if test --disable-$option = $arg
 144             then
 145                 isArgValid=1
 146             fi
 147             if test --enable-$option = $arg
 148             then
 149                 isArgValid=1
 150             fi
 151         done
 152         for option in $VAL_OPTIONS
 153         do
 154             if echo "$arg" | grep -q -- "--$option="
 155             then
 156                 isArgValid=1
 157             fi
 158         done
 159         if [ "$arg" = "--help" ]
 160         then
 161             echo
 162             echo "No more help available for Configure options,"
 163             echo "check the Wiki or join our IRC channel"
 164             break
 165         else
 166             if test $isArgValid -eq 0
 167             then
 168                 err "Option '$arg' is not recognized"
 169             fi
 170         fi
 171     done
 172 }
 173
 174 # `valopt OPTION_NAME DEFAULT DOC` extracts a string-valued option
 175 # from command line, using provided default value for the option if
 176 # not present, and saves it to the generated config.mk.
 177 #
 178 # `valopt_nosave` is much the same, except that it does not save the
 179 # result to config.mk (instead the script should use `putvar` itself
 180 # later on to save it).  `valopt_core` is the core upon which the
 181 # other two are built.
 182
 183 valopt_core() {
 184     VAL_OPTIONS="$VAL_OPTIONS $2"
 185
 186     local SAVE=$1
 187     local OP=$2
 188     local DEFAULT=$3
 189     shift
 190     shift
 191     shift
 192     local DOC="$*"
 193     if [ $HELP -eq 0 ]
 194     then
 195         local UOP=$(echo $OP | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
 196         local V="CFG_${UOP}"
 197         local V_PROVIDED="${V}_PROVIDED"
 198         eval $V="$DEFAULT"
 199         for arg in $CFG_CONFIGURE_ARGS
 200         do
 201             if echo "$arg" | grep -q -- "--$OP="
 202             then
 203                 val=$(echo "$arg" | cut -f2 -d=)
 204                 eval $V=$val
 205                 eval $V_PROVIDED=1
 206             fi
 207         done
 208         if [ "$SAVE" = "save" ]
 209         then
 210             putvar $V
 211         fi
 212     else
 213         if [ -z "$DEFAULT" ]
 214         then
 215             DEFAULT="<none>"
 216         fi
 217         OP="${OP}=[${DEFAULT}]"
 218         printf "    --%-30s %s\n" "$OP" "$DOC"
 219     fi
 220 }
 221
 222 valopt_nosave() {
 223     valopt_core nosave "$@"
 224 }
 225
 226 valopt() {
 227     valopt_core save "$@"
 228 }
 229
 230 # `opt OPTION_NAME DEFAULT DOC` extracts a boolean-valued option from
 231 # command line, using the provided default value (0/1) for the option
 232 # if not present, and saves it to the generated config.mk.
 233 #
 234 # `opt_nosave` is much the same, except that it does not save the
 235 # result to config.mk (instead the script should use `putvar` itself
 236 # later on to save it).  `opt_core` is the core upon which the other
 237 # two are built.
 238
 239 opt_core() {
 240     BOOL_OPTIONS="$BOOL_OPTIONS $2"
 241
 242     local SAVE=$1
 243     local OP=$2
 244     local DEFAULT=$3
 245     shift
 246     shift
 247     shift
 248     local DOC="$*"
 249     local FLAG=""
 250
 251     if [ $DEFAULT -eq 0 ]
 252     then
 253         FLAG="enable"
 254         DEFAULT_FLAG="disable"
 255     else
 256         FLAG="disable"
 257         DEFAULT_FLAG="enable"
 258         DOC="don't $DOC"
 259     fi
 260
 261     if [ $HELP -eq 0 ]
 262     then
 263         for arg in $CFG_CONFIGURE_ARGS
 264         do
 265             if [ "$arg" = "--${FLAG}-${OP}" ]
 266             then
 267                 OP=$(echo $OP | tr 'a-z-' 'A-Z_')
 268                 FLAG=$(echo $FLAG | tr 'a-z' 'A-Z')
 269                 local V="CFG_${FLAG}_${OP}"
 270                 local V_PROVIDED="CFG_${FLAG}_${OP}_PROVIDED"
 271                 eval $V=1
 272                 eval $V_PROVIDED=1
 273                 if [ "$SAVE" = "save" ]
 274                 then
 275                    putvar $V
 276                 fi
 277             elif [ "$arg" = "--${DEFAULT_FLAG}-${OP}" ]
 278             then
 279                 OP=$(echo $OP | tr 'a-z-' 'A-Z_')
 280                 DEFAULT_FLAG=$(echo $DEFAULT_FLAG | tr 'a-z' 'A-Z')
 281                 local V_PROVIDED="CFG_${DEFAULT_FLAG}_${OP}_PROVIDED"
 282                 eval $V_PROVIDED=1
 283             fi
 284         done
 285     else
 286         if [ -n "$META" ]
 287         then
 288             OP="$OP=<$META>"
 289         fi
 290         printf "    --%-30s %s\n" "$FLAG-$OP" "$DOC"
 291      fi
 292 }
 293
 294 opt_nosave() {
 295     opt_core nosave "$@"
 296 }
 297
 298 opt() {
 299     opt_core save "$@"
 300 }
 301
 302 envopt() {
 303     local NAME=$1
 304     local V="CFG_${NAME}"
 305     eval VV=\$$V
 306
 307     # If configure didn't set a value already, then check environment.
 308     #
 309     # (It is recommended that the configure script always check the
 310     # environment before setting any values to envopt variables; see
 311     # e.g.  how CFG_CC is handled, where it first checks `-z "$CC"`,
 312     # and issues msg if it ends up employing that provided value.)
 313     if [ -z "$VV" ]
 314     then
 315         eval $V=\$$NAME
 316         eval VV=\$$V
 317     fi
 318
 319     # If script or environment provided a value, save it.
 320     if [ -n "$VV" ]
 321     then
 322         putvar $V
 323     fi
 324 }
 325
 326 enable_if_not_disabled() {
 327     local OP=$1
 328     local UOP=$(echo $OP | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
 329     local ENAB_V="CFG_ENABLE_$UOP"
 330     local EXPLICITLY_DISABLED="CFG_DISABLE_${UOP}_PROVIDED"
 331     eval VV=\$$EXPLICITLY_DISABLED
 332     if [ -z "$VV" ]; then
 333         eval $ENAB_V=1
 334     fi
 335 }
 336
 337 to_llvm_triple() {
 338     case $1 in
 339         i686-w64-mingw32) echo i686-pc-windows-gnu ;;
 340         x86_64-w64-mingw32) echo x86_64-pc-windows-gnu ;;
 341         *) echo $1 ;;
 342     esac
 343 }
 344
 345 to_gnu_triple() {
 346     case $1 in
 347         i686-pc-windows-gnu) echo i686-w64-mingw32 ;;
 348         x86_64-pc-windows-gnu) echo x86_64-w64-mingw32 ;;
 349         *) echo $1 ;;
 350     esac
 351 }
 352
 353 # Prints the absolute path of a directory to stdout
 354 abs_path() {
 355     local _path="$1"
 356     # Unset CDPATH because it causes havok: it makes the destination unpredictable
 357     # and triggers 'cd' to print the path to stdout. Route `cd`'s output to /dev/null
 358     # for good measure.
 359     (unset CDPATH && cd "$_path" > /dev/null && pwd)
 360 }
 361
 362 msg "looking for configure programs"
 363 need_cmd cmp
 364 need_cmd mkdir
 365 need_cmd printf
 366 need_cmd cut
 367 need_cmd head
 368 need_cmd grep
 369 need_cmd xargs
 370 need_cmd cp
 371 need_cmd find
 372 need_cmd uname
 373 need_cmd date
 374 need_cmd tr
 375 need_cmd sed
 376 need_cmd file
 377 need_cmd make
 378
 379 msg "inspecting environment"
 380
 381 CFG_OSTYPE=$(uname -s)
 382 CFG_CPUTYPE=$(uname -m)
 383
 384 if [ $CFG_OSTYPE = Darwin -a $CFG_CPUTYPE = i386 ]
 385 then
 386     # Darwin's `uname -s` lies and always returns i386. We have to use sysctl
 387     # instead.
 388     if sysctl hw.optional.x86_64 | grep -q ': 1'
 389     then
 390         CFG_CPUTYPE=x86_64
 391     fi
 392 fi
 393
 394 # The goal here is to come up with the same triple as LLVM would,
 395 # at least for the subset of platforms we're willing to target.
 396
 397 case $CFG_OSTYPE in
 398
 399     Linux)
 400         CFG_OSTYPE=unknown-linux-gnu
 401         ;;
 402
 403     FreeBSD)
 404         CFG_OSTYPE=unknown-freebsd
 405         ;;
 406
 407     DragonFly)
 408         CFG_OSTYPE=unknown-dragonfly
 409         ;;
 410
 411     Bitrig)
 412         CFG_OSTYPE=unknown-bitrig
 413         ;;
 414
 415     OpenBSD)
 416         CFG_OSTYPE=unknown-openbsd
 417        ;;
 418
 419     NetBSD)
 420             CFG_OSTYPE=unknown-netbsd
 421             ;;
 422
 423     Darwin)
 424         CFG_OSTYPE=apple-darwin
 425         ;;
 426
 427     MINGW*)
 428         # msys' `uname` does not print gcc configuration, but prints msys
 429         # configuration. so we cannot believe `uname -m`:
 430         # msys1 is always i686 and msys2 is always x86_64.
 431         # instead, msys defines $MSYSTEM which is MINGW32 on i686 and
 432         # MINGW64 on x86_64.
 433         CFG_CPUTYPE=i686
 434         CFG_OSTYPE=pc-windows-gnu
 435         if [ "$MSYSTEM" = MINGW64 ]
 436         then
 437             CFG_CPUTYPE=x86_64
 438         fi
 439         ;;
 440
 441     MSYS*)
 442         CFG_OSTYPE=pc-windows-gnu
 443         ;;
 444
 445 # Thad's Cygwin identifiers below
 446
 447 #   Vista 32 bit
 448     CYGWIN_NT-6.0)
 449         CFG_OSTYPE=pc-windows-gnu
 450         CFG_CPUTYPE=i686
 451         ;;
 452
 453 #   Vista 64 bit
 454     CYGWIN_NT-6.0-WOW64)
 455         CFG_OSTYPE=pc-windows-gnu
 456         CFG_CPUTYPE=x86_64
 457         ;;
 458
 459 #   Win 7 32 bit
 460     CYGWIN_NT-6.1)
 461         CFG_OSTYPE=pc-windows-gnu
 462         CFG_CPUTYPE=i686
 463         ;;
 464
 465 #   Win 7 64 bit
 466     CYGWIN_NT-6.1-WOW64)
 467         CFG_OSTYPE=pc-windows-gnu
 468         CFG_CPUTYPE=x86_64
 469         ;;
 470
 471 #   Win 8 # uname -s on 64-bit cygwin does not contain WOW64, so simply use uname -m to detect arch (works in my install)
 472     CYGWIN_NT-6.3)
 473         CFG_OSTYPE=pc-windows-gnu
 474         ;;
 475 # We do not detect other OS such as XP/2003 using 64 bit using uname.
 476 # 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.
 477     *)
 478         err "unknown OS type: $CFG_OSTYPE"
 479         ;;
 480 esac
 481
 482
 483 case $CFG_CPUTYPE in
 484
 485     i386 | i486 | i686 | i786 | x86)
 486         CFG_CPUTYPE=i686
 487         ;;
 488
 489     xscale | arm)
 490         CFG_CPUTYPE=arm
 491         ;;
 492
 493     armv7l)
 494         CFG_CPUTYPE=arm
 495         CFG_OSTYPE="${CFG_OSTYPE}eabihf"
 496         ;;
 497
 498     aarch64)
 499         CFG_CPUTYPE=aarch64
 500         ;;
 501
 502     # At some point, when ppc64[le] support happens, this will need to do
 503     # something clever. For now it's safe to assume that we're only ever
 504     # interested in building 32 bit.
 505     powerpc | ppc | ppc64)
 506         CFG_CPUTYPE=powerpc
 507         ;;
 508
 509     x86_64 | x86-64 | x64 | amd64)
 510         CFG_CPUTYPE=x86_64
 511         ;;
 512
 513     *)
 514         err "unknown CPU type: $CFG_CPUTYPE"
 515 esac
 516
 517 # Detect 64 bit linux systems with 32 bit userland and force 32 bit compilation
 518 if [ $CFG_OSTYPE = unknown-linux-gnu -a $CFG_CPUTYPE = x86_64 ]
 519 then
 520     # $SHELL does not exist in standard 'sh', so probably only exists
 521     # if configure is running in an interactive bash shell. /usr/bin/env
 522     # exists *everywhere*.
 523     BIN_TO_PROBE="$SHELL"
 524     if [ -z "$BIN_TO_PROBE" -a -e "/usr/bin/env" ]; then
 525        BIN_TO_PROBE="/usr/bin/env"
 526     fi
 527     if [ -n "$BIN_TO_PROBE" ]; then
 528        file -L "$BIN_TO_PROBE" | grep -q "x86[_-]64"
 529        if [ $? != 0 ]; then
 530             CFG_CPUTYPE=i686
 531        fi
 532      fi
 533 fi
 534
 535
 536 DEFAULT_BUILD="${CFG_CPUTYPE}-${CFG_OSTYPE}"
 537
 538 CFG_SRC_DIR="$(abs_path $(dirname $0))/"
 539 CFG_SRC_DIR_RELATIVE="$(dirname $0)/"
 540 CFG_BUILD_DIR="$(pwd)/"
 541 CFG_SELF="$0"
 542 CFG_CONFIGURE_ARGS="$@"
 543
 544
 545 case "${CFG_SRC_DIR}" in
 546     *\ * )
 547         err "The path to the rust source directory contains spaces, which is not supported"
 548         ;;
 549     *)
 550         ;;
 551 esac
 552
 553
 554 OPTIONS=""
 555 HELP=0
 556 if [ "$1" = "--help" ]
 557 then
 558     HELP=1
 559     shift
 560     echo
 561     echo "Usage: $CFG_SELF [options]"
 562     echo
 563     echo "Options:"
 564     echo
 565 else
 566     msg "recreating config.tmp"
 567     echo '' >config.tmp
 568
 569     step_msg "processing $CFG_SELF args"
 570 fi
 571
 572 BOOL_OPTIONS=""
 573 VAL_OPTIONS=""
 574
 575 opt debug 0 "debug mode; disables optimization unless \`--enable-optimize\` given"
 576 opt valgrind 0 "run tests with valgrind (memcheck by default)"
 577 opt helgrind 0 "run tests with helgrind instead of memcheck"
 578 opt valgrind-rpass 1 "run rpass-valgrind tests with valgrind"
 579 opt docs     1 "build standard library documentation"
 580 opt compiler-docs     0 "build compiler documentation"
 581 opt optimize-tests 1 "build tests with optimizations"
 582 opt debuginfo-tests 0 "build tests with debugger metadata"
 583 opt libcpp 1 "build with llvm with libc++ instead of libstdc++ when using clang"
 584 opt llvm-assertions 0 "build LLVM with assertions"
 585 opt debug-assertions 0 "build with debugging assertions"
 586 opt fast-make 0 "use .gitmodules as timestamp for submodule deps"
 587 opt ccache 0 "invoke gcc/clang via ccache to reuse object files between builds"
 588 opt local-rust 0 "use an installed rustc rather than downloading a snapshot"
 589 opt llvm-static-stdcpp 0 "statically link to libstdc++ for LLVM"
 590 opt rpath 0 "build rpaths into rustc itself"
 591 opt stage0-landing-pads 1 "enable landing pads during bootstrap with stage0"
 592 # This is used by the automation to produce single-target nightlies
 593 opt dist-host-only 0 "only install bins for the host architecture"
 594 opt inject-std-version 1 "inject the current compiler version of libstd into programs"
 595 opt llvm-version-check 1 "check if the LLVM version is supported, build anyway"
 596
 597 # Optimization and debugging options. These may be overridden by the release channel, etc.
 598 opt_nosave optimize 1 "build optimized rust code"
 599 opt_nosave optimize-cxx 1 "build optimized C++ code"
 600 opt_nosave optimize-llvm 1 "build optimized LLVM"
 601 opt_nosave llvm-assertions 0 "build LLVM with assertions"
 602 opt_nosave debug-assertions 0 "build with debugging assertions"
 603 opt_nosave debuginfo 0 "build with debugger metadata"
 604 opt_nosave debug-jemalloc 0 "build jemalloc with --enable-debug --enable-fill"
 605
 606 valopt localstatedir "/var/lib" "local state directory"
 607 valopt sysconfdir "/etc" "install system configuration files"
 608
 609 valopt datadir "${CFG_PREFIX}/share" "install data"
 610 valopt infodir "${CFG_PREFIX}/share/info" "install additional info"
 611 valopt llvm-root "" "set LLVM root"
 612 valopt python "" "set path to python"
 613 valopt jemalloc-root "" "set directory where libjemalloc_pic.a is located"
 614 valopt build "${DEFAULT_BUILD}" "GNUs ./configure syntax LLVM build triple"
 615 valopt android-cross-path "/opt/ndk_standalone" "Android NDK standalone path (deprecated)"
 616 valopt i686-linux-android-ndk "" "i686-linux-android NDK standalone path"
 617 valopt arm-linux-androideabi-ndk "" "arm-linux-androideabi NDK standalone path"
 618 valopt aarch64-linux-android-ndk "" "aarch64-linux-android NDK standalone path"
 619 valopt release-channel "dev" "the name of the release channel to build"
 620 valopt musl-root "/usr/local" "MUSL root installation directory"
 621
 622 # Used on systems where "cc" and "ar" are unavailable
 623 valopt default-linker "cc" "the default linker"
 624 valopt default-ar     "ar" "the default ar"
 625
 626 # Many of these are saved below during the "writing configuration" step
 627 # (others are conditionally saved).
 628 opt_nosave manage-submodules 1 "let the build manage the git submodules"
 629 opt_nosave clang 0 "prefer clang to gcc for building the runtime"
 630 opt_nosave jemalloc 1 "build liballoc with jemalloc"
 631 opt elf-tls 1 "elf thread local storage on platforms where supported"
 632
 633 valopt_nosave prefix "/usr/local" "set installation prefix"
 634 valopt_nosave local-rust-root "/usr/local" "set prefix for local rust binary"
 635 valopt_nosave host "${CFG_BUILD}" "GNUs ./configure syntax LLVM host triples"
 636 valopt_nosave target "${CFG_HOST}" "GNUs ./configure syntax LLVM target triples"
 637 valopt_nosave mandir "${CFG_PREFIX}/share/man" "install man pages in PATH"
 638
 639 # Temporarily support old triples until buildbots get updated
 640 CFG_BUILD=$(to_llvm_triple $CFG_BUILD)
 641 putvar CFG_BUILD # Yes, this creates a duplicate entry, but the last one wins.
 642 CFG_HOST=$(to_llvm_triple $CFG_HOST)
 643 CFG_TARGET=$(to_llvm_triple $CFG_TARGET)
 644
 645 # On Windows this determines root of the subtree for target libraries.
 646 # Host runtime libs always go to 'bin'.
 647 valopt libdir "${CFG_PREFIX}/lib" "install libraries"
 648
 649 case "$CFG_LIBDIR" in
 650     "$CFG_PREFIX"/*) CAT_INC=2;;
 651     "$CFG_PREFIX"*)  CAT_INC=1;;
 652     *)
 653         err "libdir must begin with the prefix. Use --prefix to set it accordingly.";;
 654 esac
 655
 656 CFG_LIBDIR_RELATIVE=`echo ${CFG_LIBDIR} | cut -c$((${#CFG_PREFIX}+${CAT_INC}))-`
 657
 658 if [ $HELP -eq 1 ]
 659 then
 660     echo
 661     exit 0
 662 fi
 663
 664 # Validate Options
 665 step_msg "validating $CFG_SELF args"
 666 validate_opt
 667
 668 # Validate the release channel, and configure options
 669 case "$CFG_RELEASE_CHANNEL" in
 670     nightly )
 671         msg "overriding settings for $CFG_RELEASE_CHANNEL"
 672         CFG_ENABLE_LLVM_ASSERTIONS=1
 673         ;;
 674     dev | beta | stable)
 675         ;;
 676     *)
 677         err "release channel must be 'dev', 'nightly', 'beta' or 'stable'"
 678         ;;
 679 esac
 680
 681 # Adjust perf and debug options for debug mode
 682 if [ -n "$CFG_ENABLE_DEBUG" ]; then
 683     msg "debug mode enabled, setting performance options"
 684     if [ -z "$CFG_ENABLE_OPTIMIZE_PROVIDED" ]; then
 685         msg "optimization not explicitly enabled, disabling optimization"
 686         CFG_DISABLE_OPTIMIZE=1
 687         CFG_DISABLE_OPTIMIZE_CXX=1
 688     fi
 689
 690     # Set following variables to 1 unless setting already provided
 691     enable_if_not_disabled debug-assertions
 692     enable_if_not_disabled debug-jemalloc
 693     enable_if_not_disabled debuginfo
 694     enable_if_not_disabled llvm-assertions
 695 fi
 696
 697 # OK, now write the debugging options
 698 if [ -n "$CFG_DISABLE_OPTIMIZE" ]; then putvar CFG_DISABLE_OPTIMIZE; fi
 699 if [ -n "$CFG_DISABLE_OPTIMIZE_CXX" ]; then putvar CFG_DISABLE_OPTIMIZE_CXX; fi
 700 if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then putvar CFG_DISABLE_OPTIMIZE_LLVM; fi
 701 if [ -n "$CFG_ENABLE_LLVM_ASSERTIONS" ]; then putvar CFG_ENABLE_LLVM_ASSERTIONS; fi
 702 if [ -n "$CFG_ENABLE_DEBUG_ASSERTIONS" ]; then putvar CFG_ENABLE_DEBUG_ASSERTIONS; fi
 703 if [ -n "$CFG_ENABLE_DEBUGINFO" ]; then putvar CFG_ENABLE_DEBUGINFO; fi
 704 if [ -n "$CFG_ENABLE_DEBUG_JEMALLOC" ]; then putvar CFG_ENABLE_DEBUG_JEMALLOC; fi
 705
 706 # A magic value that allows the compiler to use unstable features
 707 # during the bootstrap even when doing so would normally be an error
 708 # because of feature staging or because the build turns on
 709 # warnings-as-errors and unstable features default to warnings.  The
 710 # build has to match this key in an env var. Meant to be a mild
 711 # deterrent from users just turning on unstable features on the stable
 712 # channel.
 713 # Basing CFG_BOOTSTRAP_KEY on CFG_BOOTSTRAP_KEY lets it get picked up
 714 # during a Makefile reconfig.
 715 CFG_BOOTSTRAP_KEY="${CFG_BOOTSTRAP_KEY-`date +%H:%M:%S`}"
 716 putvar CFG_BOOTSTRAP_KEY
 717
 718 step_msg "looking for build programs"
 719
 720 probe_need CFG_CURLORWGET  curl wget
 721 if [ -z "$CFG_PYTHON_PROVIDED" ]; then
 722     probe_need CFG_PYTHON      python2.7 python2.6 python2 python
 723 fi
 724
 725 python_version=$($CFG_PYTHON -V 2>&1)
 726 if [ $(echo $python_version | grep -c '^Python 2\.[4567]') -ne 1 ]; then
 727     err "Found $python_version, but LLVM requires Python 2.4-2.7"
 728 fi
 729
 730 # If we have no git directory then we are probably a tarball distribution
 731 # and shouldn't attempt to load submodules
 732 if [ ! -e ${CFG_SRC_DIR}.git ]
 733 then
 734     probe CFG_GIT          git
 735     msg "git: no git directory. disabling submodules"
 736     CFG_DISABLE_MANAGE_SUBMODULES=1
 737 else
 738     probe_need CFG_GIT     git
 739 fi
 740
 741 # Use `md5sum` on GNU platforms, or `md5 -q` on BSD
 742 probe CFG_MD5              md5
 743 probe CFG_MD5SUM           md5sum
 744 if [ -n "$CFG_MD5" ]
 745 then
 746     CFG_HASH_COMMAND="$CFG_MD5 -q | cut -c 1-8"
 747 elif [ -n "$CFG_MD5SUM" ]
 748 then
 749     CFG_HASH_COMMAND="$CFG_MD5SUM | cut -c 1-8"
 750 else
 751     err 'could not find one of: md5 md5sum'
 752 fi
 753 putvar CFG_HASH_COMMAND
 754
 755 probe CFG_CLANG            clang++
 756 probe CFG_CCACHE           ccache
 757 probe CFG_GCC              gcc
 758 probe CFG_LD               ld
 759 probe CFG_VALGRIND         valgrind
 760 probe CFG_PERF             perf
 761 probe CFG_ISCC             iscc
 762 probe CFG_ANTLR4           antlr4
 763 probe CFG_GRUN             grun
 764 probe CFG_FLEX             flex
 765 probe CFG_BISON            bison
 766 probe CFG_GDB              gdb
 767 probe CFG_LLDB             lldb
 768
 769 # On MacOS X, invoking `javac` pops up a dialog if the JDK is not
 770 # installed. Since `javac` is only used if `antlr4` is available,
 771 # probe for it only in this case.
 772 if [ -n "$CFG_ANTLR4" ]
 773 then
 774    probe CFG_JAVAC            javac
 775 fi
 776
 777 # the valgrind rpass tests will fail if you don't have a valgrind, but they're
 778 # only disabled if you opt out.
 779 if [ -z "$CFG_VALGRIND" ]
 780 then
 781     # If the user has explicitly asked for valgrind tests, then fail
 782     if [ -n "$CFG_ENABLE_VALGRIND" ] && [ -n "$CFG_ENABLE_VALGRIND_PROVIDED" ]
 783     then
 784         err "No valgrind present, but valgrind tests explicitly requested"
 785     else
 786         CFG_DISABLE_VALGRIND_RPASS=1
 787         putvar CFG_DISABLE_VALGRIND_RPASS
 788     fi
 789 fi
 790
 791 if [ -n "$CFG_GDB" ]
 792 then
 793     # Store GDB's version
 794     CFG_GDB_VERSION=$($CFG_GDB --version 2>/dev/null | head -1)
 795     putvar CFG_GDB_VERSION
 796 fi
 797
 798 if [ -n "$CFG_LLDB" ]
 799 then
 800     # Store LLDB's version
 801     CFG_LLDB_VERSION=$($CFG_LLDB --version 2>/dev/null | head -1)
 802     putvar CFG_LLDB_VERSION
 803
 804     # If CFG_LLDB_PYTHON_DIR is not already set from the outside and valid, try to read it from
 805     # LLDB via the -P commandline options.
 806     if [ -z "$CFG_LLDB_PYTHON_DIR" ] || [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 807     then
 808         CFG_LLDB_PYTHON_DIR=$($CFG_LLDB -P)
 809
 810         # If CFG_LLDB_PYTHON_DIR is not a valid directory, set it to something more readable
 811         if [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 812         then
 813             CFG_LLDB_PYTHON_DIR="LLDB_PYTHON_DIRECTORY_NOT_FOUND"
 814         fi
 815
 816         putvar CFG_LLDB_PYTHON_DIR
 817     fi
 818 fi
 819
 820 step_msg "looking for target specific programs"
 821
 822 probe CFG_ADB        adb
 823
 824 BIN_SUF=
 825 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ]
 826 then
 827     BIN_SUF=.exe
 828 fi
 829
 830 if [ -n "$CFG_ENABLE_LOCAL_RUST" ]
 831 then
 832     system_rustc=$(which rustc)
 833     if [ -f ${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF} ]
 834     then
 835         : # everything already configured
 836     elif [ -n "$system_rustc" ]
 837     then
 838         # we assume that rustc is in a /bin directory
 839         CFG_LOCAL_RUST_ROOT=${system_rustc%/bin/rustc}
 840     else
 841         err "no local rust to use"
 842     fi
 843
 844     CMD="${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF}"
 845     LRV=`$CMD --version`
 846     if [ $? -ne 0 ]
 847     then
 848         step_msg "failure while running $CMD --version"
 849         exit 1
 850     fi
 851     step_msg "using rustc at: ${CFG_LOCAL_RUST_ROOT} with version: $LRV"
 852     putvar CFG_LOCAL_RUST_ROOT
 853 fi
 854
 855 # Force bitrig to build with clang; gcc doesn't like us there
 856 if [ $CFG_OSTYPE = unknown-bitrig ]
 857 then
 858     step_msg "on Bitrig, forcing use of clang, disabling jemalloc"
 859     CFG_ENABLE_CLANG=1
 860     CFG_DISABLE_JEMALLOC=1
 861 fi
 862
 863 # default gcc version under OpenBSD maybe too old, try using egcc, which is a
 864 # gcc version from ports
 865 if [ $CFG_OSTYPE = unknown-openbsd ]
 866 then
 867     if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
 868         step_msg "older GCC found, try with egcc instead"
 869
 870         # probe again but using egcc
 871         probe CFG_GCC egcc
 872
 873         # and use egcc/eg++ for CC/CXX too if it was found
 874         # (but user setting has priority)
 875         if [ -n "$CFG_GCC" ]; then
 876             CC="${CC:-egcc}"
 877             CXX="${CXX:-eg++}"
 878         fi
 879     fi
 880
 881     step_msg "on OpenBSD, disabling jemalloc"
 882     CFG_DISABLE_JEMALLOC=1
 883 fi
 884
 885 # OS X 10.9, gcc is actually clang. This can cause some confusion in the build
 886 # system, so if we find that gcc is clang, we should just use clang directly.
 887 if [ $CFG_OSTYPE = apple-darwin -a -z "$CFG_ENABLE_CLANG" ]
 888 then
 889     CFG_OSX_GCC_VERSION=$("$CFG_GCC" --version 2>&1 | grep "Apple LLVM version")
 890     if [ $? -eq 0 ]
 891     then
 892         step_msg "on OS X >=10.9, forcing use of clang"
 893         CFG_ENABLE_CLANG=1
 894     else
 895         if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
 896             step_msg "older GCC found, using clang instead"
 897             CFG_ENABLE_CLANG=1
 898         else
 899             # on OS X, with xcode 5 and newer, certain developers may have
 900             # cc, gcc and g++ point to a  mixture of clang and gcc
 901             # if so, this will create very strange build errors
 902             # this last stanza is to detect some such problems and save the future rust
 903             # contributor some time solving that issue.
 904             # this detection could be generalized to other OSes aside from OS X
 905             # but the issue seems most likely to happen on OS X
 906
 907             chk_cc () {
 908                 $1 --version 2> /dev/null | grep -q $2
 909             }
 910             # check that gcc, cc and g++ all point to the same compiler.
 911             # note that for xcode 5, g++ points to clang, not clang++
 912             if !((chk_cc gcc clang  && chk_cc g++ clang) ||
 913                 (chk_cc gcc gcc  &&( chk_cc g++ g++ || chk g++ gcc))); then
 914                 err "the gcc and g++ in your path point to different compilers.
 915     Check which versions are in your path with gcc --version and g++ --version.
 916     To resolve this problem, either fix your PATH  or run configure with --enable-clang"
 917             fi
 918
 919         fi
 920     fi
 921 fi
 922
 923 # If the clang isn't already enabled, check for GCC, and if it is missing, turn
 924 # on clang as a backup.
 925 if [ -z "$CFG_ENABLE_CLANG" ]
 926 then
 927   CFG_GCC_VERSION=$("$CFG_GCC" --version 2>&1)
 928   if [ $? -ne 0 ]
 929   then
 930     step_msg "GCC not installed, will try using Clang"
 931     CFG_ENABLE_CLANG=1
 932   fi
 933 fi
 934
 935 # Okay, at this point, we have made up our minds about whether we are
 936 # going to force CFG_ENABLE_CLANG or not; save the setting if so.
 937 if [ -n "$CFG_ENABLE_CLANG" ]
 938 then
 939     putvar CFG_ENABLE_CLANG
 940 fi
 941
 942 # Same with jemalloc.  save the setting here.
 943 if [ -n "$CFG_DISABLE_JEMALLOC" ]
 944 then
 945     putvar CFG_DISABLE_JEMALLOC
 946 fi
 947
 948 if [ -n "$CFG_LLVM_ROOT" -a -z "$CFG_DISABLE_LLVM_VERSION_CHECK" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
 949 then
 950     step_msg "using custom LLVM at $CFG_LLVM_ROOT"
 951
 952     LLVM_CONFIG="$CFG_LLVM_ROOT/bin/llvm-config"
 953     LLVM_VERSION=$($LLVM_CONFIG --version)
 954
 955     case $LLVM_VERSION in
 956         (3.[5-8]*)
 957             msg "found ok version of LLVM: $LLVM_VERSION"
 958             ;;
 959         (*)
 960             err "bad LLVM version: $LLVM_VERSION, need >=3.5"
 961             ;;
 962     esac
 963 fi
 964
 965 # Even when the user overrides the choice of CC, still try to detect
 966 # clang to disable some clang-specific warnings.  We here draw a
 967 # distinction between:
 968 #
 969 #  CFG_ENABLE_CLANG : passed --enable-clang, or host "requires" clang,
 970 #  CFG_USING_CLANG : compiler (clang / gcc / $CC) looks like clang.
 971 #
 972 # This distinction is important because there are some safeguards we
 973 # would prefer to skip when merely CFG_USING_CLANG is set; but when
 974 # CFG_ENABLE_CLANG is set, that indicates that we are opting into
 975 # running such safeguards.
 976
 977 if [ -n "$CC" ]
 978 then
 979     msg "skipping compiler inference steps; using provided CC=$CC"
 980     CFG_CC="$CC"
 981
 982     CFG_OSX_CC_VERSION=$("$CFG_CC" --version 2>&1 | grep "clang")
 983     if [ $? -eq 0 ]
 984     then
 985         step_msg "note, user-provided CC looks like clang; CC=$CC."
 986         CFG_USING_CLANG=1
 987         putvar CFG_USING_CLANG
 988     fi
 989 else
 990     if [ -n "$CFG_ENABLE_CLANG" ]
 991     then
 992         if [ -z "$CFG_CLANG" ]
 993         then
 994             err "clang requested but not found"
 995         fi
 996         CFG_CC="$CFG_CLANG"
 997         CFG_USING_CLANG=1
 998         putvar CFG_USING_CLANG
 999     else
1000         CFG_CC="gcc"
1001     fi
1002 fi
1003
1004 if [ -n "$CFG_ENABLE_CLANG" ]
1005 then
1006     case "$CC" in
1007         (''|*clang)
1008         CFG_CLANG_REPORTED_VERSION=$($CFG_CC --version | grep version)
1009
1010         if echo $CFG_CLANG_REPORTED_VERSION | grep -q "(based on LLVM "; then
1011             CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*(based on LLVM \(.*\))/\1/')
1012         elif echo $CFG_CLANG_REPORTED_VERSION | grep -q "Apple LLVM"; then
1013             CFG_OSX_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1014         else
1015             CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1016         fi
1017
1018         if [ -n "$CFG_OSX_CLANG_VERSION" ]
1019         then
1020             case $CFG_OSX_CLANG_VERSION in
1021                 (7.0*)
1022                 step_msg "found ok version of APPLE CLANG: $CFG_OSX_CLANG_VERSION"
1023                 ;;
1024                 (*)
1025                 err "bad APPLE CLANG version: $CFG_OSX_CLANG_VERSION, need >=7.0"
1026                 ;;
1027             esac
1028         else
1029             case $CFG_CLANG_VERSION in
1030                 (3.2* | 3.3* | 3.4* | 3.5* | 3.6* | 3.7* | 3.8*)
1031                 step_msg "found ok version of CLANG: $CFG_CLANG_VERSION"
1032                 ;;
1033                 (*)
1034                 err "bad CLANG version: $CFG_CLANG_VERSION, need >=3.0svn"
1035                 ;;
1036             esac
1037         fi
1038
1039         if [ -z "$CC" ]
1040         then
1041             CFG_CC="clang"
1042             CFG_CXX="clang++"
1043         fi
1044     esac
1045 fi
1046
1047 if [ -n "$CFG_ENABLE_CCACHE" ]
1048 then
1049     if [ -z "$CFG_CCACHE" ]
1050     then
1051         err "ccache requested but not found"
1052     fi
1053
1054     CFG_CC="ccache $CFG_CC"
1055 fi
1056
1057 if [ -z "$CC" -a -z "$CFG_ENABLE_CLANG" -a -z "$CFG_GCC" ]
1058 then
1059     err "either clang or gcc is required"
1060 fi
1061
1062 # All safeguards based on $CFG_ENABLE_CLANG should occur before this
1063 # point in the script; after this point, script logic should inspect
1064 # $CFG_USING_CLANG rather than $CFG_ENABLE_CLANG.
1065
1066 # Set CFG_{CC,CXX,CPP,CFLAGS,CXXFLAGS,LDFLAGS}
1067 envopt CC
1068 envopt CXX
1069 envopt CPP
1070 envopt CFLAGS
1071 envopt CXXFLAGS
1072 envopt LDFLAGS
1073
1074 # stdc++ name in use
1075 # used to manage non-standard name (on OpenBSD for example)
1076 program_transform_name=$($CFG_CC -v 2>&1 | sed -n "s/.*--program-transform-name='\([^']*\)'.*/\1/p")
1077 CFG_STDCPP_NAME=$(echo "stdc++" | sed "${program_transform_name}")
1078 putvar CFG_STDCPP_NAME
1079
1080 # a little post-processing of various config values
1081 CFG_PREFIX=${CFG_PREFIX%/}
1082 CFG_MANDIR=${CFG_MANDIR%/}
1083 CFG_HOST="$(echo $CFG_HOST | tr ',' ' ')"
1084 CFG_TARGET="$(echo $CFG_TARGET | tr ',' ' ')"
1085 CFG_SUPPORTED_TARGET=""
1086 for target_file in ${CFG_SRC_DIR}mk/cfg/*.mk; do
1087   CFG_SUPPORTED_TARGET="${CFG_SUPPORTED_TARGET} $(basename "$target_file" .mk)"
1088 done
1089
1090 # copy build-triples to host-triples so that builds are a subset of hosts
1091 V_TEMP=""
1092 for i in $CFG_BUILD $CFG_HOST;
1093 do
1094    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1095 done
1096 CFG_HOST=$V_TEMP
1097
1098 # copy host-triples to target-triples so that hosts are a subset of targets
1099 V_TEMP=""
1100 for i in $CFG_HOST $CFG_TARGET;
1101 do
1102    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1103 done
1104 CFG_TARGET=$V_TEMP
1105
1106 # check target-specific tool-chains
1107 for i in $CFG_TARGET
1108 do
1109     L_CHECK=false
1110     for j in $CFG_SUPPORTED_TARGET
1111     do
1112         if [ $i = $j ]
1113         then
1114             L_CHECK=true
1115         fi
1116     done
1117
1118     if [ $L_CHECK = false ]
1119     then
1120         err "unsupported target triples \"$i\" found"
1121     fi
1122
1123     case $i in
1124         *android*)
1125             upper_snake_target=$(echo "$i" | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
1126             eval ndk=\$"CFG_${upper_snake_target}_NDK"
1127             if [ -z "$ndk" ]
1128             then
1129                 ndk=$CFG_ANDROID_CROSS_PATH
1130                 eval "CFG_${upper_snake_target}_NDK"=$CFG_ANDROID_CROSS_PATH
1131                 warn "generic/default Android NDK option is deprecated (use --$i-ndk option instead)"
1132             fi
1133
1134             # Perform a basic sanity check of the NDK
1135             for android_ndk_tool in "$ndk/bin/$i-gcc" "$ndk/bin/$i-g++" "$ndk/bin/$i-ar"
1136             do
1137                 if [ ! -f $android_ndk_tool ]
1138                 then
1139                     err "NDK tool $android_ndk_tool not found (bad or missing --$i-ndk option?)"
1140                 fi
1141             done
1142             ;;
1143
1144         arm-apple-darwin)
1145             if [ $CFG_OSTYPE != apple-darwin ]
1146             then
1147                 err "The iOS target is only supported on Mac OS X"
1148             fi
1149             ;;
1150
1151
1152         *-musl)
1153             if [ ! -f $CFG_MUSL_ROOT/lib/libc.a ]
1154             then
1155                 err "musl libc $CFG_MUSL_ROOT/lib/libc.a not found"
1156             fi
1157             ;;
1158
1159         *-msvc)
1160             # Currently the build system is not configured to build jemalloc
1161             # with MSVC, so we omit this optional dependency.
1162             step_msg "targeting MSVC, disabling jemalloc"
1163             CFG_DISABLE_JEMALLOC=1
1164             putvar CFG_DISABLE_JEMALLOC
1165
1166             # There are some MSYS python builds which will auto-translate
1167             # windows-style paths to MSYS-style paths in Python itself.
1168             # Unfortunately this breaks LLVM's build system as somewhere along
1169             # the line LLVM prints a path into a file from Python and then CMake
1170             # later tries to interpret that path. If Python prints a MSYS path
1171             # and CMake tries to use it as a Windows path, you're gonna have a
1172             # Bad Time.
1173             #
1174             # Consequently here we try to detect when that happens and print an
1175             # error if it does.
1176             if $CFG_PYTHON -c 'import sys; print sys.argv[1]' `pwd` | grep '^/' > /dev/null
1177             then
1178                 err "
1179
1180 python is silently translating windows paths to MSYS paths \
1181 and the build will fail if this python is used.
1182
1183 Either an official python install must be used or an \
1184 alternative python package in MinGW must be used.
1185
1186 If you are building under msys2 try installing the mingw-w64-x86_64-python2 \
1187 package instead of python2:
1188
1189 $ pacman -R python2 && pacman -S mingw-w64-x86_64-python2
1190 "
1191             fi
1192
1193             # MSVC requires cmake because that's how we're going to build LLVM
1194             probe_need CFG_CMAKE cmake
1195
1196             # There are three builds of cmake on windows: MSVC, MinGW and Cygwin
1197             # The Cygwin build does not have generators for Visual Studio, so
1198             # detect that here and error.
1199             if ! "$CFG_CMAKE" --help | sed -n '/^Generators/,$p' | grep 'Visual Studio' > /dev/null
1200             then
1201                 err "
1202
1203 cmake does not support Visual Studio generators.
1204
1205 This is likely due to it being an msys/cygwin build of cmake, \
1206 rather than the required windows version, built using MinGW \
1207 or Visual Studio.
1208
1209 If you are building under msys2 try installing the mingw-w64-x86_64-cmake \
1210 package instead of cmake:
1211
1212 $ pacman -R cmake && pacman -S mingw-w64-x86_64-cmake
1213 "
1214             fi
1215
1216             # Use the REG program to figure out where VS is installed
1217             # We need to figure out where cl.exe and link.exe are, so we do some
1218             # munging and some probing here. We also look for the default
1219             # INCLUDE and LIB variables for MSVC so we can set those in the
1220             # build system as well.
1221             install=$(cmd //c reg QUERY \
1222                        'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\14.0' \
1223                        -v InstallDir)
1224             if [ -z "$install" ]; then
1225               install=$(cmd //c reg QUERY \
1226                          'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\12.0' \
1227                          -v InstallDir)
1228             fi
1229             need_ok "couldn't find visual studio install root"
1230             CFG_MSVC_ROOT=$(echo "$install" | grep InstallDir | sed 's/.*REG_SZ[ ]*//')
1231             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1232             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1233             putvar CFG_MSVC_ROOT
1234
1235             case $i in
1236                 x86_64-*)
1237                     bits=x86_64
1238                     msvc_part=amd64
1239                     ;;
1240                 i686-*)
1241                     bits=i386
1242                     msvc_part=
1243                     ;;
1244                 *)
1245                     err "can only target x86 targets for MSVC"
1246                     ;;
1247             esac
1248             bindir="${CFG_MSVC_ROOT}/VC/bin"
1249             if [ -n "$msvc_part" ]; then
1250                 bindir="$bindir/$msvc_part"
1251             fi
1252             eval CFG_MSVC_BINDIR_$bits="\"$bindir\""
1253             eval CFG_MSVC_CL_$bits="\"$bindir/cl.exe\""
1254             eval CFG_MSVC_LIB_$bits="\"$bindir/lib.exe\""
1255             eval CFG_MSVC_LINK_$bits="\"$bindir/link.exe\""
1256
1257             vcvarsall="${CFG_MSVC_ROOT}/VC/vcvarsall.bat"
1258             include_path=$(cmd //V:ON //c "$vcvarsall" $msvc_part \& echo !INCLUDE!)
1259             need_ok "failed to learn about MSVC's INCLUDE"
1260             lib_path=$(cmd //V:ON //c "$vcvarsall" $msvc_part \& echo !LIB!)
1261             need_ok "failed to learn about MSVC's LIB"
1262
1263             eval CFG_MSVC_INCLUDE_PATH_${bits}="\"$include_path\""
1264             eval CFG_MSVC_LIB_PATH_${bits}="\"$lib_path\""
1265
1266             putvar CFG_MSVC_BINDIR_${bits}
1267             putvar CFG_MSVC_CL_${bits}
1268             putvar CFG_MSVC_LIB_${bits}
1269             putvar CFG_MSVC_LINK_${bits}
1270             putvar CFG_MSVC_INCLUDE_PATH_${bits}
1271             putvar CFG_MSVC_LIB_PATH_${bits}
1272             ;;
1273
1274         *-rumprun-netbsd)
1275             step_msg "targeting rumprun-netbsd, disabling jemalloc"
1276             CFG_DISABLE_JEMALLOC=1
1277             putvar CFG_DISABLE_JEMALLOC
1278             ;;
1279
1280         *)
1281             ;;
1282     esac
1283 done
1284
1285 if [ -n "$CFG_PERF" ]
1286 then
1287     HAVE_PERF_LOGFD=`$CFG_PERF stat --log-fd 2>&1 | grep 'unknown option'`
1288     if [ -z "$HAVE_PERF_LOGFD" ];
1289     then
1290         CFG_PERF_WITH_LOGFD=1
1291         putvar CFG_PERF_WITH_LOGFD
1292     fi
1293 fi
1294
1295 step_msg "making directories"
1296
1297 for i in \
1298     doc doc/std doc/extra \
1299     dl tmp dist
1300 do
1301     make_dir $i
1302 done
1303
1304 for t in $CFG_HOST
1305 do
1306     make_dir $t/llvm
1307 done
1308
1309 for t in $CFG_HOST
1310 do
1311     make_dir $t/rustllvm
1312 done
1313
1314 for t in $CFG_TARGET
1315 do
1316   make_dir $t/rt
1317   for s in 0 1 2 3
1318   do
1319     make_dir $t/rt/stage$s
1320     make_dir $t/rt/jemalloc
1321     make_dir $t/rt/compiler-rt
1322     for i in                                          \
1323       isaac sync test \
1324       arch/i386 arch/x86_64 arch/arm arch/aarch64 arch/mips arch/powerpc
1325     do
1326       make_dir $t/rt/stage$s/$i
1327     done
1328   done
1329 done
1330
1331 for h in $CFG_HOST
1332 do
1333     for t in $CFG_TARGET
1334     do
1335         # host lib dir stage0
1336         make_dir $h/stage0/lib
1337
1338         # target bin dir stage0
1339         make_dir $h/stage0/lib/rustlib/$t/bin
1340
1341         # target lib dir stage0
1342         make_dir $h/stage0/lib/rustlib/$t/lib
1343
1344         for i in 0 1 2 3
1345         do
1346             # host bin dir
1347             make_dir $h/stage$i/bin
1348
1349             # host lib dir
1350             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE
1351
1352             # host test dir
1353             make_dir $h/stage$i/test
1354
1355             # target bin dir
1356             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/bin
1357
1358             # target lib dir
1359             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/lib
1360         done
1361     done
1362
1363     make_dir $h/test/run-pass
1364     make_dir $h/test/run-pass-valgrind
1365     make_dir $h/test/run-pass-fulldeps
1366     make_dir $h/test/run-fail
1367     make_dir $h/test/run-fail-fulldeps
1368     make_dir $h/test/compile-fail
1369     make_dir $h/test/parse-fail
1370     make_dir $h/test/compile-fail-fulldeps
1371     make_dir $h/test/bench
1372     make_dir $h/test/perf
1373     make_dir $h/test/pretty
1374     make_dir $h/test/debuginfo-gdb
1375     make_dir $h/test/debuginfo-lldb
1376     make_dir $h/test/codegen
1377     make_dir $h/test/rustdoc
1378 done
1379
1380 # Configure submodules
1381 step_msg "configuring submodules"
1382
1383 # Have to be in the top of src directory for this
1384 if [ -z $CFG_DISABLE_MANAGE_SUBMODULES ]
1385 then
1386     cd ${CFG_SRC_DIR}
1387
1388     msg "git: submodule sync"
1389     "${CFG_GIT}" submodule sync
1390
1391     msg "git: submodule init"
1392     "${CFG_GIT}" submodule init
1393
1394     # Disable submodules that we're not using
1395     if [ -n "${CFG_LLVM_ROOT}" ]; then
1396         msg "git: submodule deinit src/llvm"
1397         "${CFG_GIT}" submodule deinit src/llvm
1398     fi
1399     if [ -n "${CFG_JEMALLOC_ROOT}" ]; then
1400         msg "git: submodule deinit src/jemalloc"
1401         "${CFG_GIT}" submodule deinit src/jemalloc
1402     fi
1403
1404     msg "git: submodule update"
1405     "${CFG_GIT}" submodule update
1406     need_ok "git failed"
1407
1408     msg "git: submodule foreach sync"
1409     "${CFG_GIT}" submodule foreach --recursive 'if test -e .gitmodules; then git submodule sync; fi'
1410     need_ok "git failed"
1411
1412     msg "git: submodule foreach update"
1413     "${CFG_GIT}" submodule update --recursive
1414     need_ok "git failed"
1415
1416     # NB: this is just for the sake of getting the submodule SHA1 values
1417     # and status written into the build log.
1418     msg "git: submodule status"
1419     "${CFG_GIT}" submodule status --recursive
1420
1421     msg "git: submodule clobber"
1422     "${CFG_GIT}" submodule foreach --recursive git clean -dxf
1423     need_ok "git failed"
1424     "${CFG_GIT}" submodule foreach --recursive git checkout .
1425     need_ok "git failed"
1426
1427     cd ${CFG_BUILD_DIR}
1428 fi
1429
1430 # Configure llvm, only if necessary
1431 step_msg "looking at LLVM"
1432 CFG_LLVM_SRC_DIR=${CFG_SRC_DIR}src/llvm/
1433 for t in $CFG_HOST
1434 do
1435     do_reconfigure=1
1436     is_msvc=0
1437     case "$t" in
1438         (*-msvc)
1439         is_msvc=1
1440         ;;
1441     esac
1442
1443     if [ -z $CFG_LLVM_ROOT ]
1444     then
1445         LLVM_BUILD_DIR=${CFG_BUILD_DIR}$t/llvm
1446         if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]
1447         then
1448             LLVM_DBG_OPTS="--enable-debug-symbols --disable-optimized"
1449             # Just use LLVM straight from its build directory to
1450             # avoid 'make install' time
1451             LLVM_INST_DIR=$LLVM_BUILD_DIR/Debug
1452         else
1453             LLVM_DBG_OPTS="--enable-optimized"
1454             LLVM_INST_DIR=$LLVM_BUILD_DIR/Release
1455         fi
1456         if [ -z "$CFG_ENABLE_LLVM_ASSERTIONS" ]
1457         then
1458             LLVM_ASSERTION_OPTS="--disable-assertions"
1459         else
1460             LLVM_ASSERTION_OPTS="--enable-assertions"
1461
1462             # Apparently even if we request assertions be enabled for MSVC,
1463             # LLVM's CMake build system ignore this and outputs in `Release`
1464             # anyway.
1465             if [ ${is_msvc} -eq 0 ]; then
1466                 LLVM_INST_DIR=${LLVM_INST_DIR}+Asserts
1467             fi
1468         fi
1469     else
1470         msg "not reconfiguring LLVM, external LLVM root"
1471         # The user is using their own LLVM
1472         LLVM_BUILD_DIR=
1473         LLVM_INST_DIR=$CFG_LLVM_ROOT
1474         do_reconfigure=0
1475         # Check that LLVm FileCheck is available. Needed for the tests
1476         need_cmd $LLVM_INST_DIR/bin/FileCheck
1477     fi
1478
1479     if [ ${do_reconfigure} -ne 0 ]
1480     then
1481     # because git is hilarious, it might have put the module index
1482     # in a couple places.
1483         index1="${CFG_SRC_DIR}.git/modules/src/llvm/index"
1484         index2="${CFG_SRC_DIR}src/llvm/.git/index"
1485         for index in ${index1} ${index2}
1486         do
1487             config_status="${LLVM_BUILD_DIR}/config.status"
1488             if test -e ${index} -a \
1489                     -e ${config_status} -a \
1490                     ${config_status} -nt ${index}
1491             then
1492                 msg "not reconfiguring LLVM, config.status is fresh"
1493                 do_reconfigure=0
1494             fi
1495         done
1496     fi
1497
1498     # We need the generator later on for compiler-rt even if LLVM's not built
1499     if [ ${is_msvc} -ne 0 ]
1500     then
1501         case "$CFG_MSVC_ROOT" in
1502             *14.0*)
1503                 generator="Visual Studio 14 2015"
1504                 ;;
1505             *12.0*)
1506                 generator="Visual Studio 12 2013"
1507                 ;;
1508             *)
1509                 err "can't determine generator for LLVM cmake"
1510                 ;;
1511         esac
1512         case "$t" in
1513             x86_64-*)
1514                 generator="$generator Win64"
1515                 ;;
1516             i686-*)
1517                 ;;
1518             *)
1519                 err "can only build LLVM for x86 platforms"
1520                 ;;
1521         esac
1522         CFG_CMAKE_GENERATOR=$generator
1523         putvar CFG_CMAKE_GENERATOR
1524     fi
1525
1526     if [ ${do_reconfigure} -ne 0 ] && [ ${is_msvc} -ne 0 ]
1527     then
1528         msg "configuring LLVM for $t with cmake"
1529
1530         CMAKE_ARGS="-DLLVM_INCLUDE_TESTS=OFF"
1531         if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then
1532             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Debug"
1533         else
1534             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Release"
1535         fi
1536         if [ -z "$CFG_ENABLE_LLVM_ASSERTIONS" ]
1537         then
1538             CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=OFF"
1539         else
1540             CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=ON"
1541         fi
1542
1543         msg "configuring LLVM with:"
1544         msg "$CMAKE_ARGS"
1545
1546         (cd $LLVM_BUILD_DIR && "$CFG_CMAKE" $CFG_LLVM_SRC_DIR \
1547                                             -G "$CFG_CMAKE_GENERATOR" \
1548                                             $CMAKE_ARGS)
1549         need_ok "LLVM cmake configure failed"
1550     fi
1551
1552     if [ ${do_reconfigure} -ne 0 ] && [ ${is_msvc} -eq 0 ]
1553     then
1554         # LLVM's configure doesn't recognize the new Windows triples yet
1555         gnu_t=$(to_gnu_triple $t)
1556
1557         msg "configuring LLVM for $gnu_t"
1558
1559         LLVM_TARGETS="--enable-targets=x86,x86_64,arm,aarch64,mips,powerpc"
1560         LLVM_BUILD="--build=$gnu_t"
1561         LLVM_HOST="--host=$gnu_t"
1562         LLVM_TARGET="--target=$gnu_t"
1563
1564         # Disable unused LLVM features
1565         LLVM_OPTS="$LLVM_DBG_OPTS $LLVM_ASSERTION_OPTS --disable-docs --enable-bindings=none"
1566         # Disable term-info, linkage of which comes in multiple forms,
1567         # making our snapshots incompatible (#9334)
1568         LLVM_OPTS="$LLVM_OPTS --disable-terminfo"
1569         # Try to have LLVM pull in as few dependencies as possible (#9397)
1570         LLVM_OPTS="$LLVM_OPTS --disable-zlib --disable-libffi"
1571
1572         # Use win32 native thread/lock apis instead of pthread wrapper.
1573         # (llvm's configure tries to find pthread first, so we have to disable it explicitly.)
1574         # Also note that pthreads works badly on mingw-w64 systems: #8996
1575         case "$CFG_BUILD" in
1576             (*-windows-gnu)
1577             LLVM_OPTS="$LLVM_OPTS --disable-pthreads"
1578             ;;
1579         esac
1580
1581         case "$CFG_CC" in
1582             ("ccache clang")
1583             LLVM_CXX_32="ccache clang++ -Qunused-arguments"
1584             LLVM_CC_32="ccache clang -Qunused-arguments"
1585
1586             LLVM_CXX_64="ccache clang++ -Qunused-arguments"
1587             LLVM_CC_64="ccache clang -Qunused-arguments"
1588             ;;
1589             ("clang")
1590             LLVM_CXX_32="clang++ -Qunused-arguments"
1591             LLVM_CC_32="clang -Qunused-arguments"
1592
1593             LLVM_CXX_64="clang++ -Qunused-arguments"
1594             LLVM_CC_64="clang -Qunused-arguments"
1595             ;;
1596             ("ccache gcc")
1597             LLVM_CXX_32="ccache g++"
1598             LLVM_CC_32="ccache gcc"
1599
1600             LLVM_CXX_64="ccache g++"
1601             LLVM_CC_64="ccache gcc"
1602             ;;
1603             ("gcc")
1604             LLVM_CXX_32="g++"
1605             LLVM_CC_32="gcc"
1606
1607             LLVM_CXX_64="g++"
1608             LLVM_CC_64="gcc"
1609             ;;
1610
1611             (*)
1612             msg "inferring LLVM_CXX/CC from CXX/CC = $CXX/$CC"
1613             if [ -n "$CFG_ENABLE_CCACHE" ]
1614             then
1615                 if [ -z "$CFG_CCACHE" ]
1616                 then
1617                     err "ccache requested but not found"
1618                 fi
1619
1620                 LLVM_CXX_32="ccache $CXX"
1621                 LLVM_CC_32="ccache $CC"
1622
1623                 LLVM_CXX_64="ccache $CXX"
1624                 LLVM_CC_64="ccache $CC"
1625             else
1626                 LLVM_CXX_32="$CXX"
1627                 LLVM_CC_32="$CC"
1628
1629                 LLVM_CXX_64="$CXX"
1630                 LLVM_CC_64="$CC"
1631             fi
1632
1633             ;;
1634         esac
1635
1636         case "$CFG_CPUTYPE" in
1637             (x86*)
1638                 LLVM_CXX_32="$LLVM_CXX_32 -m32"
1639                 LLVM_CC_32="$LLVM_CC_32 -m32"
1640
1641                 LLVM_CFLAGS_32="-m32"
1642                 LLVM_CXXFLAGS_32="-m32"
1643                 LLVM_LDFLAGS_32="-m32"
1644
1645                 LLVM_CFLAGS_64=""
1646                 LLVM_CXXFLAGS_64=""
1647                 LLVM_LDFLAGS_64=""
1648
1649                 LLVM_CXX_32="$LLVM_CXX_32 -m32"
1650                 LLVM_CC_32="$LLVM_CC_32 -m32"
1651                 ;;
1652
1653             (*)
1654                 LLVM_CFLAGS_32=""
1655                 LLVM_CXXFLAGS_32=""
1656                 LLVM_LDFLAGS_32=""
1657
1658                 LLVM_CFLAGS_64=""
1659                 LLVM_CXXFLAGS_64=""
1660                 LLVM_LDFLAGS_64=""
1661                 ;;
1662         esac
1663
1664         if echo $t | grep -q x86_64
1665         then
1666             LLVM_CXX=$LLVM_CXX_64
1667             LLVM_CC=$LLVM_CC_64
1668             LLVM_CFLAGS=$LLVM_CFLAGS_64
1669             LLVM_CXXFLAGS=$LLVM_CXXFLAGS_64
1670             LLVM_LDFLAGS=$LLVM_LDFLAGS_64
1671         else
1672             LLVM_CXX=$LLVM_CXX_32
1673             LLVM_CC=$LLVM_CC_32
1674             LLVM_CFLAGS=$LLVM_CFLAGS_32
1675             LLVM_CXXFLAGS=$LLVM_CXXFLAGS_32
1676             LLVM_LDFLAGS=$LLVM_LDFLAGS_32
1677         fi
1678
1679         CXX=$LLVM_CXX
1680         CC=$LLVM_CC
1681         CFLAGS="$CFLAGS $LLVM_CFLAGS"
1682         CXXFLAGS="$CXXFLAGS $LLVM_CXXFLAGS"
1683         LDFLAGS="$LDFLAGS $LLVM_LDFLAGS"
1684
1685         if [ -z "$CFG_DISABLE_LIBCPP" ] && [ -n "$CFG_USING_CLANG" ]; then
1686             LLVM_OPTS="$LLVM_OPTS --enable-libcpp"
1687         fi
1688
1689         LLVM_FLAGS="$LLVM_TARGETS $LLVM_OPTS $LLVM_BUILD \
1690                         $LLVM_HOST $LLVM_TARGET --with-python=$CFG_PYTHON"
1691
1692         msg "configuring LLVM with:"
1693         msg "$LLVM_FLAGS"
1694
1695         export CXX
1696         export CC
1697         export CFLAGS
1698         export CXXFLAGS
1699         export LDFLAGS
1700
1701         cd $LLVM_BUILD_DIR
1702         case $CFG_SRC_DIR in
1703             /* | [a-z]:* | [A-Z]:*)
1704                 ${CFG_LLVM_SRC_DIR}configure $LLVM_FLAGS
1705                 ;;
1706             *)
1707                 ${CFG_BUILD_DIR}${CFG_LLVM_SRC_DIR}configure \
1708                     $LLVM_FLAGS
1709                 ;;
1710         esac
1711         need_ok "LLVM configure failed"
1712
1713         cd $CFG_BUILD_DIR
1714     fi
1715
1716     # Construct variables for LLVM build and install directories for
1717     # each target. These will be named
1718     # CFG_LLVM_BUILD_DIR_${target_triple} but all the hyphens in
1719     # target_triple will be converted to underscore, because bash
1720     # variables can't contain hyphens. The makefile will then have to
1721     # convert back.
1722     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1723     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1724     eval ${CFG_LLVM_BUILD_DIR}="'$LLVM_BUILD_DIR'"
1725     eval ${CFG_LLVM_INST_DIR}="'$LLVM_INST_DIR'"
1726 done
1727
1728
1729 step_msg "writing configuration"
1730
1731 putvar CFG_SRC_DIR
1732 putvar CFG_SRC_DIR_RELATIVE
1733 putvar CFG_BUILD_DIR
1734 putvar CFG_OSTYPE
1735 putvar CFG_CPUTYPE
1736 putvar CFG_CONFIGURE_ARGS
1737 putvar CFG_PREFIX
1738 putvar CFG_HOST
1739 putvar CFG_TARGET
1740 putvar CFG_LIBDIR_RELATIVE
1741 putvar CFG_DISABLE_MANAGE_SUBMODULES
1742 putvar CFG_AARCH64_LINUX_ANDROID_NDK
1743 putvar CFG_ARM_LINUX_ANDROIDEABI_NDK
1744 putvar CFG_I686_LINUX_ANDROID_NDK
1745 putvar CFG_MANDIR
1746
1747 # Avoid spurious warnings from clang by feeding it original source on
1748 # ccache-miss rather than preprocessed input.
1749 if [ -n "$CFG_ENABLE_CCACHE" ] && [ -n "$CFG_USING_CLANG" ]
1750 then
1751     CFG_CCACHE_CPP2=1
1752     putvar CFG_CCACHE_CPP2
1753 fi
1754
1755 if [ -n "$CFG_ENABLE_CCACHE" ]
1756 then
1757     CFG_CCACHE_BASEDIR=${CFG_SRC_DIR}
1758     putvar CFG_CCACHE_BASEDIR
1759 fi
1760
1761
1762 putvar CFG_LLVM_SRC_DIR
1763
1764 for t in $CFG_HOST
1765 do
1766     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1767     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1768     putvar $CFG_LLVM_BUILD_DIR
1769     putvar $CFG_LLVM_INST_DIR
1770 done
1771
1772 msg
1773 copy_if_changed ${CFG_SRC_DIR}Makefile.in ./Makefile
1774 move_if_changed config.tmp config.mk
1775 rm -f config.tmp
1776 touch config.stamp
1777
1778 if [ -z "$CFG_ENABLE_DEBUG" ]; then
1779     step_msg "configured in release mode. for development consider --enable-debug"
1780 else
1781     step_msg "complete"
1782 fi
1783
1784 msg "run \`make help\`"
1785 msg