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 OPTIONS=""
 545 HELP=0
 546 if [ "$1" = "--help" ]
 547 then
 548     HELP=1
 549     shift
 550     echo
 551     echo "Usage: $CFG_SELF [options]"
 552     echo
 553     echo "Options:"
 554     echo
 555 else
 556     msg "recreating config.tmp"
 557     echo '' >config.tmp
 558
 559     step_msg "processing $CFG_SELF args"
 560 fi
 561
 562 BOOL_OPTIONS=""
 563 VAL_OPTIONS=""
 564
 565 opt debug 0 "debug mode; disables optimization unless \`--enable-optimize\` given"
 566 opt valgrind 0 "run tests with valgrind (memcheck by default)"
 567 opt helgrind 0 "run tests with helgrind instead of memcheck"
 568 opt valgrind-rpass 1 "run rpass-valgrind tests with valgrind"
 569 opt docs     1 "build standard library documentation"
 570 opt compiler-docs     0 "build compiler documentation"
 571 opt optimize-tests 1 "build tests with optimizations"
 572 opt debuginfo-tests 0 "build tests with debugger metadata"
 573 opt libcpp 1 "build with llvm with libc++ instead of libstdc++ when using clang"
 574 opt llvm-assertions 0 "build LLVM with assertions"
 575 opt debug-assertions 0 "build with debugging assertions"
 576 opt fast-make 0 "use .gitmodules as timestamp for submodule deps"
 577 opt ccache 0 "invoke gcc/clang via ccache to reuse object files between builds"
 578 opt local-rust 0 "use an installed rustc rather than downloading a snapshot"
 579 opt llvm-static-stdcpp 0 "statically link to libstdc++ for LLVM"
 580 opt rpath 0 "build rpaths into rustc itself"
 581 # This is used by the automation to produce single-target nightlies
 582 opt dist-host-only 0 "only install bins for the host architecture"
 583 opt inject-std-version 1 "inject the current compiler version of libstd into programs"
 584 opt llvm-version-check 1 "check if the LLVM version is supported, build anyway"
 585
 586 # Optimization and debugging options. These may be overridden by the release channel, etc.
 587 opt_nosave optimize 1 "build optimized rust code"
 588 opt_nosave optimize-cxx 1 "build optimized C++ code"
 589 opt_nosave optimize-llvm 1 "build optimized LLVM"
 590 opt_nosave llvm-assertions 0 "build LLVM with assertions"
 591 opt_nosave debug-assertions 0 "build with debugging assertions"
 592 opt_nosave debuginfo 0 "build with debugger metadata"
 593 opt_nosave debug-jemalloc 0 "build jemalloc with --enable-debug --enable-fill"
 594
 595 valopt localstatedir "/var/lib" "local state directory"
 596 valopt sysconfdir "/etc" "install system configuration files"
 597
 598 valopt datadir "${CFG_PREFIX}/share" "install data"
 599 valopt infodir "${CFG_PREFIX}/share/info" "install additional info"
 600 valopt llvm-root "" "set LLVM root"
 601 valopt python "" "set path to python"
 602 valopt jemalloc-root "" "set directory where libjemalloc_pic.a is located"
 603 valopt build "${DEFAULT_BUILD}" "GNUs ./configure syntax LLVM build triple"
 604 valopt android-cross-path "/opt/ndk_standalone" "Android NDK standalone path (deprecated)"
 605 valopt arm-linux-androideabi-ndk "" "arm-linux-androideabi NDK standalone path"
 606 valopt aarch64-linux-android-ndk "" "aarch64-linux-android NDK standalone path"
 607 valopt release-channel "dev" "the name of the release channel to build"
 608 valopt musl-root "/usr/local" "MUSL root installation directory"
 609
 610 # Many of these are saved below during the "writing configuration" step
 611 # (others are conditionally saved).
 612 opt_nosave manage-submodules 1 "let the build manage the git submodules"
 613 opt_nosave clang 0 "prefer clang to gcc for building the runtime"
 614 opt_nosave jemalloc 1 "build liballoc with jemalloc"
 615 opt elf-tls 1 "elf thread local storage on platforms where supported"
 616
 617 valopt_nosave prefix "/usr/local" "set installation prefix"
 618 valopt_nosave local-rust-root "/usr/local" "set prefix for local rust binary"
 619 valopt_nosave host "${CFG_BUILD}" "GNUs ./configure syntax LLVM host triples"
 620 valopt_nosave target "${CFG_HOST}" "GNUs ./configure syntax LLVM target triples"
 621 valopt_nosave mandir "${CFG_PREFIX}/share/man" "install man pages in PATH"
 622
 623 # Temporarily support old triples until buildbots get updated
 624 CFG_BUILD=$(to_llvm_triple $CFG_BUILD)
 625 putvar CFG_BUILD # Yes, this creates a duplicate entry, but the last one wins.
 626 CFG_HOST=$(to_llvm_triple $CFG_HOST)
 627 CFG_TARGET=$(to_llvm_triple $CFG_TARGET)
 628
 629 # On windows we just store the libraries in the bin directory because
 630 # there's no rpath. This is where the build system itself puts libraries;
 631 # --libdir is used to configure the installation directory.
 632 # FIXME: This needs to parameterized over target triples. Do it in platform.mk
 633 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ]
 634 then
 635     CFG_LIBDIR_RELATIVE=bin
 636 else
 637     CFG_LIBDIR_RELATIVE=lib
 638 fi
 639
 640 valopt libdir "${CFG_PREFIX}/${CFG_LIBDIR_RELATIVE}" "install libraries (do not set it on windows platform)"
 641
 642 case "$CFG_LIBDIR" in
 643     "$CFG_PREFIX"/*) CAT_INC=2;;
 644     "$CFG_PREFIX"*)  CAT_INC=1;;
 645     *)
 646         err "libdir must begin with the prefix. Use --prefix to set it accordingly.";;
 647 esac
 648
 649 CFG_LIBDIR_RELATIVE=`echo ${CFG_LIBDIR} | cut -c$((${#CFG_PREFIX}+${CAT_INC}))-`
 650
 651 if ( [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ] ) \
 652         && [ "$CFG_LIBDIR_RELATIVE" != "bin" ]; then
 653     err "libdir on windows should be set to 'bin'"
 654 fi
 655
 656 if [ $HELP -eq 1 ]
 657 then
 658     echo
 659     exit 0
 660 fi
 661
 662 # Validate Options
 663 step_msg "validating $CFG_SELF args"
 664 validate_opt
 665
 666 # Validate the release channel, and configure options
 667 case "$CFG_RELEASE_CHANNEL" in
 668     nightly )
 669         msg "overriding settings for $CFG_RELEASE_CHANNEL"
 670         CFG_ENABLE_LLVM_ASSERTIONS=1
 671         ;;
 672     dev | beta | stable)
 673         ;;
 674     *)
 675         err "release channel must be 'dev', 'nightly', 'beta' or 'stable'"
 676         ;;
 677 esac
 678
 679 # Adjust perf and debug options for debug mode
 680 if [ -n "$CFG_ENABLE_DEBUG" ]; then
 681     msg "debug mode enabled, setting performance options"
 682     if [ -z "$CFG_ENABLE_OPTIMIZE_PROVIDED" ]; then
 683         msg "optimization not explicitly enabled, disabling optimization"
 684         CFG_DISABLE_OPTIMIZE=1
 685         CFG_DISABLE_OPTIMIZE_CXX=1
 686     fi
 687
 688     # Set following variables to 1 unless setting already provided
 689     enable_if_not_disabled debug-assertions
 690     enable_if_not_disabled debug-jemalloc
 691     enable_if_not_disabled debuginfo
 692     enable_if_not_disabled llvm-assertions
 693 fi
 694
 695 # OK, now write the debugging options
 696 if [ -n "$CFG_DISABLE_OPTIMIZE" ]; then putvar CFG_DISABLE_OPTIMIZE; fi
 697 if [ -n "$CFG_DISABLE_OPTIMIZE_CXX" ]; then putvar CFG_DISABLE_OPTIMIZE_CXX; fi
 698 if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then putvar CFG_DISABLE_OPTIMIZE_LLVM; fi
 699 if [ -n "$CFG_ENABLE_LLVM_ASSERTIONS" ]; then putvar CFG_ENABLE_LLVM_ASSERTIONS; fi
 700 if [ -n "$CFG_ENABLE_DEBUG_ASSERTIONS" ]; then putvar CFG_ENABLE_DEBUG_ASSERTIONS; fi
 701 if [ -n "$CFG_ENABLE_DEBUGINFO" ]; then putvar CFG_ENABLE_DEBUGINFO; fi
 702 if [ -n "$CFG_ENABLE_DEBUG_JEMALLOC" ]; then putvar CFG_ENABLE_DEBUG_JEMALLOC; fi
 703
 704 # A magic value that allows the compiler to use unstable features
 705 # during the bootstrap even when doing so would normally be an error
 706 # because of feature staging or because the build turns on
 707 # warnings-as-errors and unstable features default to warnings.  The
 708 # build has to match this key in an env var. Meant to be a mild
 709 # deterrent from users just turning on unstable features on the stable
 710 # channel.
 711 # Basing CFG_BOOTSTRAP_KEY on CFG_BOOTSTRAP_KEY lets it get picked up
 712 # during a Makefile reconfig.
 713 CFG_BOOTSTRAP_KEY="${CFG_BOOTSTRAP_KEY-`date +%H:%M:%S`}"
 714 putvar CFG_BOOTSTRAP_KEY
 715
 716 step_msg "looking for build programs"
 717
 718 probe_need CFG_CURLORWGET  curl wget
 719 if [ -z "$CFG_PYTHON_PROVIDED" ]; then
 720     probe_need CFG_PYTHON      python2.7 python2.6 python2 python
 721 fi
 722
 723 python_version=$($CFG_PYTHON -V 2>&1)
 724 if [ $(echo $python_version | grep -c '^Python 2\.[4567]') -ne 1 ]; then
 725     err "Found $python_version, but LLVM requires Python 2.4-2.7"
 726 fi
 727
 728 # If we have no git directory then we are probably a tarball distribution
 729 # and shouldn't attempt to load submodules
 730 if [ ! -e ${CFG_SRC_DIR}.git ]
 731 then
 732     probe CFG_GIT          git
 733     msg "git: no git directory. disabling submodules"
 734     CFG_DISABLE_MANAGE_SUBMODULES=1
 735 else
 736     probe_need CFG_GIT     git
 737 fi
 738
 739 # Use `md5sum` on GNU platforms, or `md5 -q` on BSD
 740 probe CFG_MD5              md5
 741 probe CFG_MD5SUM           md5sum
 742 if [ -n "$CFG_MD5" ]
 743 then
 744     CFG_HASH_COMMAND="$CFG_MD5 -q | cut -c 1-8"
 745 elif [ -n "$CFG_MD5SUM" ]
 746 then
 747     CFG_HASH_COMMAND="$CFG_MD5SUM | cut -c 1-8"
 748 else
 749     err 'could not find one of: md5 md5sum'
 750 fi
 751 putvar CFG_HASH_COMMAND
 752
 753 probe CFG_CLANG            clang++
 754 probe CFG_CCACHE           ccache
 755 probe CFG_GCC              gcc
 756 probe CFG_LD               ld
 757 probe CFG_VALGRIND         valgrind
 758 probe CFG_PERF             perf
 759 probe CFG_ISCC             iscc
 760 probe CFG_ANTLR4           antlr4
 761 probe CFG_GRUN             grun
 762 probe CFG_FLEX             flex
 763 probe CFG_BISON            bison
 764 probe CFG_PANDOC           pandoc
 765 probe CFG_XELATEX          xelatex
 766 probe CFG_GDB              gdb
 767 probe CFG_LLDB             lldb
 768
 769 # On MacOS X, invoking `javac` pops up a dialog if the JDK is not
 770 # installed. Since `javac` is only used if `antlr4` is available,
 771 # probe for it only in this case.
 772 if [ -n "$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 if [ -n "$CFG_PANDOC" ]
 825 then
 826     # Extract "MAJOR MINOR" from Pandoc's version number
 827     PV_MAJOR_MINOR=$(pandoc --version | grep '^pandoc' |
 828         sed -E 's/pandoc(.exe)? ([0-9]+)\.([0-9]+).*/\2 \3/')
 829
 830     MIN_PV_MAJOR="1"
 831     MIN_PV_MINOR="9"
 832
 833     # these patterns are shell globs, *not* regexps
 834     PV_MAJOR=${PV_MAJOR_MINOR% *}
 835     PV_MINOR=${PV_MAJOR_MINOR#* }
 836
 837     if [ "$PV_MAJOR" -lt "$MIN_PV_MAJOR" ] || [ "$PV_MINOR" -lt "$MIN_PV_MINOR" ]
 838     then
 839         step_msg "pandoc $PV_MAJOR.$PV_MINOR is too old. Need at least $MIN_PV_MAJOR.$MIN_PV_MINOR. Disabling"
 840         BAD_PANDOC=1
 841     fi
 842 fi
 843
 844 BIN_SUF=
 845 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ]
 846 then
 847     BIN_SUF=.exe
 848 fi
 849
 850 if [ -n "$CFG_ENABLE_LOCAL_RUST" ]
 851 then
 852     system_rustc=$(which rustc)
 853     if [ -f ${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF} ]
 854     then
 855         : # everything already configured
 856     elif [ -n "$system_rustc" ]
 857     then
 858         # we assume that rustc is in a /bin directory
 859         CFG_LOCAL_RUST_ROOT=${system_rustc%/bin/rustc}
 860     else
 861         err "no local rust to use"
 862     fi
 863
 864     CMD="${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF}"
 865     LRV=`$CMD --version`
 866     if [ $? -ne 0 ]
 867     then
 868         step_msg "failure while running $CMD --version"
 869         exit 1
 870     fi
 871     step_msg "using rustc at: ${CFG_LOCAL_RUST_ROOT} with version: $LRV"
 872     putvar CFG_LOCAL_RUST_ROOT
 873 fi
 874
 875 # Force bitrig to build with clang; gcc doesn't like us there
 876 if [ $CFG_OSTYPE = unknown-bitrig ]
 877 then
 878     step_msg "on Bitrig, forcing use of clang, disabling jemalloc"
 879     CFG_ENABLE_CLANG=1
 880     CFG_DISABLE_JEMALLOC=1
 881 fi
 882
 883 # OS X 10.9, gcc is actually clang. This can cause some confusion in the build
 884 # system, so if we find that gcc is clang, we should just use clang directly.
 885 if [ $CFG_OSTYPE = apple-darwin -a -z "$CFG_ENABLE_CLANG" ]
 886 then
 887     CFG_OSX_GCC_VERSION=$("$CFG_GCC" --version 2>&1 | grep "Apple LLVM version")
 888     if [ $? -eq 0 ]
 889     then
 890         step_msg "on OS X >=10.9, forcing use of clang"
 891         CFG_ENABLE_CLANG=1
 892     else
 893         if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
 894             step_msg "older GCC found, using clang instead"
 895             CFG_ENABLE_CLANG=1
 896         else
 897             # on OS X, with xcode 5 and newer, certain developers may have
 898             # cc, gcc and g++ point to a  mixture of clang and gcc
 899             # if so, this will create very strange build errors
 900             # this last stanza is to detect some such problems and save the future rust
 901             # contributor some time solving that issue.
 902             # this detection could be generalized to other OSes aside from OS X
 903             # but the issue seems most likely to happen on OS X
 904
 905             chk_cc () {
 906                 $1 --version 2> /dev/null | grep -q $2
 907             }
 908             # check that gcc, cc and g++ all point to the same compiler.
 909             # note that for xcode 5, g++ points to clang, not clang++
 910             if !((chk_cc gcc clang  && chk_cc g++ clang) ||
 911                 (chk_cc gcc gcc  &&( chk_cc g++ g++ || chk g++ gcc))); then
 912                 err "the gcc and g++ in your path point to different compilers.
 913     Check which versions are in your path with gcc --version and g++ --version.
 914     To resolve this problem, either fix your PATH  or run configure with --enable-clang"
 915             fi
 916
 917         fi
 918     fi
 919 fi
 920
 921 # If the clang isn't already enabled, check for GCC, and if it is missing, turn
 922 # on clang as a backup.
 923 if [ -z "$CFG_ENABLE_CLANG" ]
 924 then
 925   CFG_GCC_VERSION=$("$CFG_GCC" --version 2>&1)
 926   if [ $? -ne 0 ]
 927   then
 928     step_msg "GCC not installed, will try using Clang"
 929     CFG_ENABLE_CLANG=1
 930   fi
 931 fi
 932
 933 # Okay, at this point, we have made up our minds about whether we are
 934 # going to force CFG_ENABLE_CLANG or not; save the setting if so.
 935 if [ -n "$CFG_ENABLE_CLANG" ]
 936 then
 937     putvar CFG_ENABLE_CLANG
 938 fi
 939
 940 # Same with jemalloc.  save the setting here.
 941 if [ -n "$CFG_DISABLE_JEMALLOC" ]
 942 then
 943     putvar CFG_DISABLE_JEMALLOC
 944 fi
 945
 946 if [ -n "$CFG_LLVM_ROOT" -a -z "$CFG_DISABLE_LLVM_VERSION_CHECK" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
 947 then
 948     step_msg "using custom LLVM at $CFG_LLVM_ROOT"
 949
 950     LLVM_CONFIG="$CFG_LLVM_ROOT/bin/llvm-config"
 951     LLVM_VERSION=$($LLVM_CONFIG --version)
 952
 953     case $LLVM_VERSION in
 954         (3.[5-7]*)
 955             msg "found ok version of LLVM: $LLVM_VERSION"
 956             ;;
 957         (*)
 958             err "bad LLVM version: $LLVM_VERSION, need >=3.5"
 959             ;;
 960     esac
 961 fi
 962
 963 # Even when the user overrides the choice of CC, still try to detect
 964 # clang to disable some clang-specific warnings.  We here draw a
 965 # distinction between:
 966 #
 967 #  CFG_ENABLE_CLANG : passed --enable-clang, or host "requires" clang,
 968 #  CFG_USING_CLANG : compiler (clang / gcc / $CC) looks like clang.
 969 #
 970 # This distinction is important because there are some safeguards we
 971 # would prefer to skip when merely CFG_USING_CLANG is set; but when
 972 # CFG_ENABLE_CLANG is set, that indicates that we are opting into
 973 # running such safeguards.
 974
 975 if [ -n "$CC" ]
 976 then
 977     msg "skipping compiler inference steps; using provided CC=$CC"
 978     CFG_CC="$CC"
 979
 980     CFG_OSX_CC_VERSION=$("$CFG_CC" --version 2>&1 | grep "clang")
 981     if [ $? -eq 0 ]
 982     then
 983         step_msg "note, user-provided CC looks like clang; CC=$CC."
 984         CFG_USING_CLANG=1
 985         putvar CFG_USING_CLANG
 986     fi
 987 else
 988     if [ -n "$CFG_ENABLE_CLANG" ]
 989     then
 990         if [ -z "$CFG_CLANG" ]
 991         then
 992             err "clang requested but not found"
 993         fi
 994         CFG_CC="$CFG_CLANG"
 995         CFG_USING_CLANG=1
 996         putvar CFG_USING_CLANG
 997     else
 998         CFG_CC="gcc"
 999     fi
1000 fi
1001
1002 if [ -n "$CFG_ENABLE_CLANG" ]
1003 then
1004     case "$CC" in
1005         (''|*clang)
1006         CFG_CLANG_REPORTED_VERSION=$($CFG_CC --version | grep version)
1007
1008         if echo $CFG_CLANG_REPORTED_VERSION | grep -q "(based on LLVM "; then
1009             CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*(based on LLVM \(.*\))/\1/')
1010         elif echo $CFG_CLANG_REPORTED_VERSION | grep -q "Apple LLVM"; then
1011             CFG_OSX_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1012         else
1013             CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1014         fi
1015
1016         if [ -n "$CFG_OSX_CLANG_VERSION" ]
1017         then
1018             case $CFG_OSX_CLANG_VERSION in
1019                 (7.0*)
1020                 step_msg "found ok version of APPLE CLANG: $CFG_OSX_CLANG_VERSION"
1021                 ;;
1022                 (*)
1023                 err "bad APPLE CLANG version: $CFG_OSX_CLANG_VERSION, need >=7.0"
1024                 ;;
1025             esac
1026         else
1027             case $CFG_CLANG_VERSION in
1028                 (3.2* | 3.3* | 3.4* | 3.5* | 3.6* | 3.7*)
1029                 step_msg "found ok version of CLANG: $CFG_CLANG_VERSION"
1030                 ;;
1031                 (*)
1032                 err "bad CLANG version: $CFG_CLANG_VERSION, need >=3.0svn"
1033                 ;;
1034             esac
1035         fi
1036
1037         if [ -z "$CC" ]
1038         then
1039             CFG_CC="clang"
1040             CFG_CXX="clang++"
1041         fi
1042     esac
1043 fi
1044
1045 if [ -n "$CFG_ENABLE_CCACHE" ]
1046 then
1047     if [ -z "$CFG_CCACHE" ]
1048     then
1049         err "ccache requested but not found"
1050     fi
1051
1052     CFG_CC="ccache $CFG_CC"
1053 fi
1054
1055 if [ -z "$CC" -a -z "$CFG_ENABLE_CLANG" -a -z "$CFG_GCC" ]
1056 then
1057     err "either clang or gcc is required"
1058 fi
1059
1060 # All safeguards based on $CFG_ENABLE_CLANG should occur before this
1061 # point in the script; after this point, script logic should inspect
1062 # $CFG_USING_CLANG rather than $CFG_ENABLE_CLANG.
1063
1064 # Set CFG_{CC,CXX,CPP,CFLAGS,CXXFLAGS}
1065 envopt CC
1066 envopt CXX
1067 envopt CPP
1068 envopt CFLAGS
1069 envopt CXXFLAGS
1070
1071 # a little post-processing of various config values
1072 CFG_PREFIX=${CFG_PREFIX%/}
1073 CFG_MANDIR=${CFG_MANDIR%/}
1074 CFG_HOST="$(echo $CFG_HOST | tr ',' ' ')"
1075 CFG_TARGET="$(echo $CFG_TARGET | tr ',' ' ')"
1076 CFG_SUPPORTED_TARGET=""
1077 for target_file in ${CFG_SRC_DIR}mk/cfg/*.mk; do
1078   CFG_SUPPORTED_TARGET="${CFG_SUPPORTED_TARGET} $(basename "$target_file" .mk)"
1079 done
1080
1081 # copy build-triples to host-triples so that builds are a subset of hosts
1082 V_TEMP=""
1083 for i in $CFG_BUILD $CFG_HOST;
1084 do
1085    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1086 done
1087 CFG_HOST=$V_TEMP
1088
1089 # copy host-triples to target-triples so that hosts are a subset of targets
1090 V_TEMP=""
1091 for i in $CFG_HOST $CFG_TARGET;
1092 do
1093    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1094 done
1095 CFG_TARGET=$V_TEMP
1096
1097 # check target-specific tool-chains
1098 for i in $CFG_TARGET
1099 do
1100     L_CHECK=false
1101     for j in $CFG_SUPPORTED_TARGET
1102     do
1103         if [ $i = $j ]
1104         then
1105             L_CHECK=true
1106         fi
1107     done
1108
1109     if [ $L_CHECK = false ]
1110     then
1111         err "unsupported target triples \"$i\" found"
1112     fi
1113
1114     case $i in
1115         *android*)
1116             upper_snake_target=$(echo "$i" | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
1117             eval ndk=\$"CFG_${upper_snake_target}_NDK"
1118             if [ -z "$ndk" ]
1119             then
1120                 ndk=$CFG_ANDROID_CROSS_PATH
1121                 eval "CFG_${upper_snake_target}_NDK"=$CFG_ANDROID_CROSS_PATH
1122                 warn "generic/default Android NDK option is deprecated (use --$i-ndk option instead)"
1123             fi
1124
1125             # Perform a basic sanity check of the NDK
1126             for android_ndk_tool in "$ndk/bin/$i-gcc" "$ndk/bin/$i-g++" "$ndk/bin/$i-ar"
1127             do
1128                 if [ ! -f $android_ndk_tool ]
1129                 then
1130                     err "NDK tool $android_ndk_tool not found (bad or missing --$i-ndk option?)"
1131                 fi
1132             done
1133             ;;
1134
1135         arm-apple-darwin)
1136             if [ $CFG_OSTYPE != apple-darwin ]
1137             then
1138                 err "The iOS target is only supported on Mac OS X"
1139             fi
1140             ;;
1141
1142
1143         *-musl)
1144             if [ ! -f $CFG_MUSL_ROOT/lib/libc.a ]
1145             then
1146                 err "musl libc $CFG_MUSL_ROOT/lib/libc.a not found"
1147             fi
1148             ;;
1149
1150         *-msvc)
1151             # Currently the build system is not configured to build jemalloc
1152             # with MSVC, so we omit this optional dependency.
1153             step_msg "targeting MSVC, disabling jemalloc"
1154             CFG_DISABLE_JEMALLOC=1
1155             putvar CFG_DISABLE_JEMALLOC
1156
1157             # There are some MSYS python builds which will auto-translate
1158             # windows-style paths to MSYS-style paths in Python itself.
1159             # Unfortunately this breaks LLVM's build system as somewhere along
1160             # the line LLVM prints a path into a file from Python and then CMake
1161             # later tries to interpret that path. If Python prints a MSYS path
1162             # and CMake tries to use it as a Windows path, you're gonna have a
1163             # Bad Time.
1164             #
1165             # Consequently here we try to detect when that happens and print an
1166             # error if it does.
1167             if $CFG_PYTHON -c 'import sys; print sys.argv[1]' `pwd` | grep '^/'
1168             then
1169                 err "python is silently translating windows paths to MSYS paths \
1170                      and the build will fail if this python is used.\n\n \
1171                      Either an official python install must be used or an \
1172                      alternative python package in MinGW must be used."
1173             fi
1174
1175             # MSVC requires cmake because that's how we're going to build LLVM
1176             probe_need CFG_CMAKE cmake
1177
1178             # Use the REG program to figure out where VS is installed
1179             # We need to figure out where cl.exe and link.exe are, so we do some
1180             # munging and some probing here. We also look for the default
1181             # INCLUDE and LIB variables for MSVC so we can set those in the
1182             # build system as well.
1183             install=$(reg QUERY \
1184                        'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\14.0' \
1185                        -v InstallDir)
1186             if [ -z "$install" ]; then
1187               install=$(reg QUERY \
1188                          'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\12.0' \
1189                          -v InstallDir)
1190             fi
1191             need_ok "couldn't find visual studio install root"
1192             CFG_MSVC_ROOT=$(echo "$install" | grep InstallDir | sed 's/.*REG_SZ[ ]*//')
1193             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1194             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1195             putvar CFG_MSVC_ROOT
1196
1197             case $i in
1198                 x86_64-*)
1199                     bits=x86_64
1200                     msvc_part=amd64
1201                     ;;
1202                 i686-*)
1203                     bits=i386
1204                     msvc_part=
1205                     ;;
1206                 *)
1207                     err "can only target x86 targets for MSVC"
1208                     ;;
1209             esac
1210             bindir="${CFG_MSVC_ROOT}/VC/bin"
1211             if [ -n "$msvc_part" ]; then
1212                 bindir="$bindir/$msvc_part"
1213             fi
1214             eval CFG_MSVC_BINDIR_$bits="\"$bindir\""
1215             eval CFG_MSVC_CL_$bits="\"$bindir/cl.exe\""
1216             eval CFG_MSVC_LIB_$bits="\"$bindir/lib.exe\""
1217             eval CFG_MSVC_LINK_$bits="\"$bindir/link.exe\""
1218
1219             vcvarsall="${CFG_MSVC_ROOT}/VC/vcvarsall.bat"
1220             include_path=$(cmd /c "\"$vcvarsall\" $msvc_part && cmd /c echo %INCLUDE%")
1221             need_ok "failed to learn about MSVC's INCLUDE"
1222             lib_path=$(cmd /c "\"$vcvarsall\" $msvc_part && cmd /c echo %LIB%")
1223             need_ok "failed to learn about MSVC's LIB"
1224
1225             eval CFG_MSVC_INCLUDE_PATH_${bits}="\"$include_path\""
1226             eval CFG_MSVC_LIB_PATH_${bits}="\"$lib_path\""
1227
1228             putvar CFG_MSVC_BINDIR_${bits}
1229             putvar CFG_MSVC_CL_${bits}
1230             putvar CFG_MSVC_LIB_${bits}
1231             putvar CFG_MSVC_LINK_${bits}
1232             putvar CFG_MSVC_INCLUDE_PATH_${bits}
1233             putvar CFG_MSVC_LIB_PATH_${bits}
1234             ;;
1235
1236         *)
1237             ;;
1238     esac
1239 done
1240
1241 if [ -n "$CFG_PERF" ]
1242 then
1243     HAVE_PERF_LOGFD=`$CFG_PERF stat --log-fd 2>&1 | grep 'unknown option'`
1244     if [ -z "$HAVE_PERF_LOGFD" ];
1245     then
1246         CFG_PERF_WITH_LOGFD=1
1247         putvar CFG_PERF_WITH_LOGFD
1248     fi
1249 fi
1250
1251 step_msg "making directories"
1252
1253 for i in \
1254     doc doc/std doc/extra \
1255     dl tmp dist
1256 do
1257     make_dir $i
1258 done
1259
1260 for t in $CFG_HOST
1261 do
1262     make_dir $t/llvm
1263 done
1264
1265 for t in $CFG_HOST
1266 do
1267     make_dir $t/rustllvm
1268 done
1269
1270 for t in $CFG_TARGET
1271 do
1272   make_dir $t/rt
1273   for s in 0 1 2 3
1274   do
1275     make_dir $t/rt/stage$s
1276     make_dir $t/rt/jemalloc
1277     make_dir $t/rt/compiler-rt
1278     for i in                                          \
1279       isaac sync test \
1280       arch/i386 arch/x86_64 arch/arm arch/aarch64 arch/mips arch/powerpc
1281     do
1282       make_dir $t/rt/stage$s/$i
1283     done
1284   done
1285 done
1286
1287 for h in $CFG_HOST
1288 do
1289     for t in $CFG_TARGET
1290     do
1291         # host lib dir stage0
1292         make_dir $h/stage0/lib
1293
1294         # target bin dir stage0
1295         make_dir $h/stage0/lib/rustlib/$t/bin
1296
1297         # target lib dir stage0
1298         make_dir $h/stage0/lib/rustlib/$t/lib
1299
1300         for i in 0 1 2 3
1301         do
1302             # host bin dir
1303             make_dir $h/stage$i/bin
1304
1305             # host lib dir
1306             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE
1307
1308             # host test dir
1309             make_dir $h/stage$i/test
1310
1311             # target bin dir
1312             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/bin
1313
1314             # target lib dir
1315             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/lib
1316         done
1317     done
1318
1319     make_dir $h/test/run-pass
1320     make_dir $h/test/run-pass-valgrind
1321     make_dir $h/test/run-pass-fulldeps
1322     make_dir $h/test/run-fail
1323     make_dir $h/test/run-fail-fulldeps
1324     make_dir $h/test/compile-fail
1325     make_dir $h/test/parse-fail
1326     make_dir $h/test/compile-fail-fulldeps
1327     make_dir $h/test/bench
1328     make_dir $h/test/perf
1329     make_dir $h/test/pretty
1330     make_dir $h/test/debuginfo-gdb
1331     make_dir $h/test/debuginfo-lldb
1332     make_dir $h/test/codegen
1333     make_dir $h/test/rustdoc
1334 done
1335
1336 # Configure submodules
1337 step_msg "configuring submodules"
1338
1339 # Have to be in the top of src directory for this
1340 if [ -z $CFG_DISABLE_MANAGE_SUBMODULES ]
1341 then
1342     cd ${CFG_SRC_DIR}
1343
1344     msg "git: submodule sync"
1345     "${CFG_GIT}" submodule sync
1346
1347     msg "git: submodule init"
1348     "${CFG_GIT}" submodule init
1349
1350     # Disable submodules that we're not using
1351     if [ -n "${CFG_LLVM_ROOT}" ]; then
1352         msg "git: submodule deinit src/llvm"
1353         "${CFG_GIT}" submodule deinit src/llvm
1354     fi
1355     if [ -n "${CFG_JEMALLOC_ROOT}" ]; then
1356         msg "git: submodule deinit src/jemalloc"
1357         "${CFG_GIT}" submodule deinit src/jemalloc
1358     fi
1359
1360     msg "git: submodule update"
1361     "${CFG_GIT}" submodule update
1362     need_ok "git failed"
1363
1364     msg "git: submodule foreach sync"
1365     "${CFG_GIT}" submodule foreach --recursive 'if test -e .gitmodules; then git submodule sync; fi'
1366     need_ok "git failed"
1367
1368     msg "git: submodule foreach update"
1369     "${CFG_GIT}" submodule update --recursive
1370     need_ok "git failed"
1371
1372     # NB: this is just for the sake of getting the submodule SHA1 values
1373     # and status written into the build log.
1374     msg "git: submodule status"
1375     "${CFG_GIT}" submodule status --recursive
1376
1377     msg "git: submodule clobber"
1378     "${CFG_GIT}" submodule foreach --recursive git clean -dxf
1379     need_ok "git failed"
1380     "${CFG_GIT}" submodule foreach --recursive git checkout .
1381     need_ok "git failed"
1382
1383     cd ${CFG_BUILD_DIR}
1384 fi
1385
1386 # Configure llvm, only if necessary
1387 step_msg "looking at LLVM"
1388 CFG_LLVM_SRC_DIR=${CFG_SRC_DIR}src/llvm/
1389 for t in $CFG_HOST
1390 do
1391     do_reconfigure=1
1392     is_msvc=0
1393     case "$t" in
1394         (*-msvc)
1395         is_msvc=1
1396         ;;
1397     esac
1398
1399     if [ -z $CFG_LLVM_ROOT ]
1400     then
1401         LLVM_BUILD_DIR=${CFG_BUILD_DIR}$t/llvm
1402         if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]
1403         then
1404             LLVM_DBG_OPTS="--enable-debug-symbols --disable-optimized"
1405             # Just use LLVM straight from its build directory to
1406             # avoid 'make install' time
1407             LLVM_INST_DIR=$LLVM_BUILD_DIR/Debug
1408         else
1409             LLVM_DBG_OPTS="--enable-optimized"
1410             LLVM_INST_DIR=$LLVM_BUILD_DIR/Release
1411         fi
1412         if [ -z "$CFG_ENABLE_LLVM_ASSERTIONS" ]
1413         then
1414             LLVM_ASSERTION_OPTS="--disable-assertions"
1415         else
1416             LLVM_ASSERTION_OPTS="--enable-assertions"
1417
1418             # Apparently even if we request assertions be enabled for MSVC,
1419             # LLVM's CMake build system ignore this and outputs in `Release`
1420             # anyway.
1421             if [ ${is_msvc} -eq 0 ]; then
1422                 LLVM_INST_DIR=${LLVM_INST_DIR}+Asserts
1423             fi
1424         fi
1425     else
1426         msg "not reconfiguring LLVM, external LLVM root"
1427         # The user is using their own LLVM
1428         LLVM_BUILD_DIR=
1429         LLVM_INST_DIR=$CFG_LLVM_ROOT
1430         do_reconfigure=0
1431     fi
1432
1433
1434     if [ ${do_reconfigure} -ne 0 ]
1435     then
1436     # because git is hilarious, it might have put the module index
1437     # in a couple places.
1438         index1="${CFG_SRC_DIR}.git/modules/src/llvm/index"
1439         index2="${CFG_SRC_DIR}src/llvm/.git/index"
1440         for index in ${index1} ${index2}
1441         do
1442             config_status="${LLVM_BUILD_DIR}/config.status"
1443             if test -e ${index} -a \
1444                     -e ${config_status} -a \
1445                     ${config_status} -nt ${index}
1446             then
1447                 msg "not reconfiguring LLVM, config.status is fresh"
1448                 do_reconfigure=0
1449             fi
1450         done
1451     fi
1452
1453     if [ ${do_reconfigure} -ne 0 ] && [ ${is_msvc} -ne 0 ]
1454     then
1455         msg "configuring LLVM for $t with cmake"
1456
1457         CMAKE_ARGS="-DLLVM_INCLUDE_TESTS=OFF"
1458         if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then
1459             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Debug"
1460         else
1461             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Release"
1462         fi
1463         if [ -z "$CFG_ENABLE_LLVM_ASSERTIONS" ]
1464         then
1465             CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=OFF"
1466         else
1467             CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=ON"
1468         fi
1469
1470         msg "configuring LLVM with:"
1471         msg "$CMAKE_ARGS"
1472         case "$CFG_MSVC_ROOT" in
1473             *14.0*)
1474                 generator="Visual Studio 14 2015"
1475                 ;;
1476             *12.0*)
1477                 generator="Visual Studio 12 2013"
1478                 ;;
1479             *)
1480                 err "can't determine generator for LLVM cmake"
1481                 ;;
1482         esac
1483         case "$t" in
1484             x86_64-*)
1485                 generator="$generator Win64"
1486                 ;;
1487             i686-*)
1488                 ;;
1489             *)
1490                 err "can only build LLVM for x86 platforms"
1491                 ;;
1492         esac
1493         (cd $LLVM_BUILD_DIR && "$CFG_CMAKE" $CFG_LLVM_SRC_DIR \
1494                                             -G "$generator" \
1495                                             $CMAKE_ARGS)
1496         need_ok "LLVM cmake configure failed"
1497     fi
1498
1499     if [ ${do_reconfigure} -ne 0 ] && [ ${is_msvc} -eq 0 ]
1500     then
1501         # LLVM's configure doesn't recognize the new Windows triples yet
1502         gnu_t=$(to_gnu_triple $t)
1503
1504         msg "configuring LLVM for $gnu_t"
1505
1506         LLVM_TARGETS="--enable-targets=x86,x86_64,arm,aarch64,mips,powerpc"
1507         LLVM_BUILD="--build=$gnu_t"
1508         LLVM_HOST="--host=$gnu_t"
1509         LLVM_TARGET="--target=$gnu_t"
1510
1511         # Disable unused LLVM features
1512         LLVM_OPTS="$LLVM_DBG_OPTS $LLVM_ASSERTION_OPTS --disable-docs --enable-bindings=none"
1513         # Disable term-info, linkage of which comes in multiple forms,
1514         # making our snapshots incompatible (#9334)
1515         LLVM_OPTS="$LLVM_OPTS --disable-terminfo"
1516         # Try to have LLVM pull in as few dependencies as possible (#9397)
1517         LLVM_OPTS="$LLVM_OPTS --disable-zlib --disable-libffi"
1518
1519         # Use win32 native thread/lock apis instead of pthread wrapper.
1520         # (llvm's configure tries to find pthread first, so we have to disable it explicitly.)
1521         # Also note that pthreads works badly on mingw-w64 systems: #8996
1522         case "$CFG_BUILD" in
1523             (*-windows-gnu)
1524             LLVM_OPTS="$LLVM_OPTS --disable-pthreads"
1525             ;;
1526         esac
1527
1528         case "$CFG_CC" in
1529             ("ccache clang")
1530             LLVM_CXX_32="ccache clang++ -Qunused-arguments"
1531             LLVM_CC_32="ccache clang -Qunused-arguments"
1532
1533             LLVM_CXX_64="ccache clang++ -Qunused-arguments"
1534             LLVM_CC_64="ccache clang -Qunused-arguments"
1535             ;;
1536             ("clang")
1537             LLVM_CXX_32="clang++ -Qunused-arguments"
1538             LLVM_CC_32="clang -Qunused-arguments"
1539
1540             LLVM_CXX_64="clang++ -Qunused-arguments"
1541             LLVM_CC_64="clang -Qunused-arguments"
1542             ;;
1543             ("ccache gcc")
1544             LLVM_CXX_32="ccache g++"
1545             LLVM_CC_32="ccache gcc"
1546
1547             LLVM_CXX_64="ccache g++"
1548             LLVM_CC_64="ccache gcc"
1549             ;;
1550             ("gcc")
1551             LLVM_CXX_32="g++"
1552             LLVM_CC_32="gcc"
1553
1554             LLVM_CXX_64="g++"
1555             LLVM_CC_64="gcc"
1556             ;;
1557
1558             (*)
1559             msg "inferring LLVM_CXX/CC from CXX/CC = $CXX/$CC"
1560             if [ -n "$CFG_ENABLE_CCACHE" ]
1561             then
1562                 if [ -z "$CFG_CCACHE" ]
1563                 then
1564                     err "ccache requested but not found"
1565                 fi
1566
1567                 LLVM_CXX_32="ccache $CXX"
1568                 LLVM_CC_32="ccache $CC"
1569
1570                 LLVM_CXX_64="ccache $CXX"
1571                 LLVM_CC_64="ccache $CC"
1572             else
1573                 LLVM_CXX_32="$CXX"
1574                 LLVM_CC_32="$CC"
1575
1576                 LLVM_CXX_64="$CXX"
1577                 LLVM_CC_64="$CC"
1578             fi
1579
1580             ;;
1581         esac
1582
1583         case "$CFG_CPUTYPE" in
1584             (x86*)
1585                 LLVM_CXX_32="$LLVM_CXX_32 -m32"
1586                 LLVM_CC_32="$LLVM_CC_32 -m32"
1587
1588                 LLVM_CFLAGS_32="-m32"
1589                 LLVM_CXXFLAGS_32="-m32"
1590                 LLVM_LDFLAGS_32="-m32"
1591
1592                 LLVM_CFLAGS_64=""
1593                 LLVM_CXXFLAGS_64=""
1594                 LLVM_LDFLAGS_64=""
1595
1596                 LLVM_CXX_32="$LLVM_CXX_32 -m32"
1597                 LLVM_CC_32="$LLVM_CC_32 -m32"
1598                 ;;
1599
1600             (*)
1601                 LLVM_CFLAGS_32=""
1602                 LLVM_CXXFLAGS_32=""
1603                 LLVM_LDFLAGS_32=""
1604
1605                 LLVM_CFLAGS_64=""
1606                 LLVM_CXXFLAGS_64=""
1607                 LLVM_LDFLAGS_64=""
1608                 ;;
1609         esac
1610
1611         if echo $t | grep -q x86_64
1612         then
1613             LLVM_CXX=$LLVM_CXX_64
1614             LLVM_CC=$LLVM_CC_64
1615             LLVM_CFLAGS=$LLVM_CFLAGS_64
1616             LLVM_CXXFLAGS=$LLVM_CXXFLAGS_64
1617             LLVM_LDFLAGS=$LLVM_LDFLAGS_64
1618         else
1619             LLVM_CXX=$LLVM_CXX_32
1620             LLVM_CC=$LLVM_CC_32
1621             LLVM_CFLAGS=$LLVM_CFLAGS_32
1622             LLVM_CXXFLAGS=$LLVM_CXXFLAGS_32
1623             LLVM_LDFLAGS=$LLVM_LDFLAGS_32
1624         fi
1625
1626         CXX=$LLVM_CXX
1627         CC=$LLVM_CC
1628         CFLAGS=$LLVM_CFLAGS
1629         CXXFLAGS=$LLVM_CXXFLAGS
1630         LDFLAGS=$LLVM_LDFLAGS
1631
1632         if [ -z "$CFG_DISABLE_LIBCPP" ] && [ -n "$CFG_USING_CLANG" ]; then
1633             LLVM_OPTS="$LLVM_OPTS --enable-libcpp"
1634         fi
1635
1636         LLVM_FLAGS="$LLVM_TARGETS $LLVM_OPTS $LLVM_BUILD \
1637                         $LLVM_HOST $LLVM_TARGET --with-python=$CFG_PYTHON"
1638
1639         msg "configuring LLVM with:"
1640         msg "$LLVM_FLAGS"
1641
1642         export CXX
1643         export CC
1644         export CFLAGS
1645         export CXXFLAGS
1646         export LDFLAGS
1647
1648         cd $LLVM_BUILD_DIR
1649         case $CFG_SRC_DIR in
1650             /* | [a-z]:* | [A-Z]:*)
1651                 ${CFG_LLVM_SRC_DIR}configure $LLVM_FLAGS
1652                 ;;
1653             *)
1654                 ${CFG_BUILD_DIR}${CFG_LLVM_SRC_DIR}configure \
1655                     $LLVM_FLAGS
1656                 ;;
1657         esac
1658         need_ok "LLVM configure failed"
1659
1660         cd $CFG_BUILD_DIR
1661     fi
1662
1663     # Construct variables for LLVM build and install directories for
1664     # each target. These will be named
1665     # CFG_LLVM_BUILD_DIR_${target_triple} but all the hyphens in
1666     # target_triple will be converted to underscore, because bash
1667     # variables can't contain hyphens. The makefile will then have to
1668     # convert back.
1669     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1670     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1671     eval ${CFG_LLVM_BUILD_DIR}="'$LLVM_BUILD_DIR'"
1672     eval ${CFG_LLVM_INST_DIR}="'$LLVM_INST_DIR'"
1673 done
1674
1675
1676 step_msg "writing configuration"
1677
1678 putvar CFG_SRC_DIR
1679 putvar CFG_SRC_DIR_RELATIVE
1680 putvar CFG_BUILD_DIR
1681 putvar CFG_OSTYPE
1682 putvar CFG_CPUTYPE
1683 putvar CFG_CONFIGURE_ARGS
1684 putvar CFG_PREFIX
1685 putvar CFG_HOST
1686 putvar CFG_TARGET
1687 putvar CFG_LIBDIR_RELATIVE
1688 putvar CFG_DISABLE_MANAGE_SUBMODULES
1689 putvar CFG_AARCH64_LINUX_ANDROID_NDK
1690 putvar CFG_ARM_LINUX_ANDROIDEABI_NDK
1691 putvar CFG_MANDIR
1692
1693 # Avoid spurious warnings from clang by feeding it original source on
1694 # ccache-miss rather than preprocessed input.
1695 if [ -n "$CFG_ENABLE_CCACHE" ] && [ -n "$CFG_USING_CLANG" ]
1696 then
1697     CFG_CCACHE_CPP2=1
1698     putvar CFG_CCACHE_CPP2
1699 fi
1700
1701 if [ -n "$CFG_ENABLE_CCACHE" ]
1702 then
1703     CFG_CCACHE_BASEDIR=${CFG_SRC_DIR}
1704     putvar CFG_CCACHE_BASEDIR
1705 fi
1706
1707
1708 if [ -n $BAD_PANDOC ]
1709 then
1710     CFG_PANDOC=
1711     putvar CFG_PANDOC
1712 fi
1713
1714 putvar CFG_LLVM_SRC_DIR
1715
1716 for t in $CFG_HOST
1717 do
1718     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1719     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1720     putvar $CFG_LLVM_BUILD_DIR
1721     putvar $CFG_LLVM_INST_DIR
1722 done
1723
1724 msg
1725 copy_if_changed ${CFG_SRC_DIR}Makefile.in ./Makefile
1726 move_if_changed config.tmp config.mk
1727 rm -f config.tmp
1728 touch config.stamp
1729
1730 if [ -z "$CFG_ENABLE_DEBUG" ]; then
1731     step_msg "configured in release mode. for development consider --enable-debug"
1732 else
1733     step_msg "complete"
1734 fi
1735
1736 msg "run \`make help\`"
1737 msg