configure

   1 #!/bin/sh
   2
   3 # /bin/sh on Solaris is not a POSIX compatible shell, but /usr/bin/bash is.
   4 if [ `uname -s` = 'SunOS' -a "${POSIX_SHELL}" != "true" ]; then
   5     POSIX_SHELL="true"
   6     export POSIX_SHELL
   7     exec /usr/bin/env bash $0 "$@"
   8 fi
   9 unset POSIX_SHELL # clear it so if we invoke other scripts, they run as bash as well
  10
  11 msg() {
  12     echo "configure: $*"
  13 }
  14
  15 step_msg() {
  16     msg
  17     msg "$1"
  18     msg
  19 }
  20
  21 warn() {
  22     echo "configure: WARNING: $1"
  23 }
  24
  25 err() {
  26     echo "configure: error: $1"
  27     exit 1
  28 }
  29
  30 run() {
  31     msg "$@"
  32     "$@"
  33 }
  34
  35 need_ok() {
  36     if [ $? -ne 0 ]
  37     then
  38         err "$1"
  39     fi
  40 }
  41
  42 need_cmd() {
  43     if command -v $1 >/dev/null 2>&1
  44     then msg "found program '$1'"
  45     else err "program '$1' is missing, please install it"
  46     fi
  47 }
  48
  49 make_dir() {
  50     if [ ! -d $1 ]
  51     then
  52         run mkdir -p $1
  53     fi
  54 }
  55
  56 copy_if_changed() {
  57     if cmp -s $1 $2
  58     then
  59         msg "leaving $2 unchanged"
  60     else
  61         run cp -f $1 $2
  62         chmod u-w $2 # make copied artifact read-only
  63     fi
  64 }
  65
  66 move_if_changed() {
  67     if cmp -s $1 $2
  68     then
  69         msg "leaving $2 unchanged"
  70     else
  71         run mv -f $1 $2
  72         chmod u-w $2 # make moved artifact read-only
  73     fi
  74 }
  75
  76 putvar() {
  77     local T
  78     eval T=\$$1
  79     eval TLEN=\${#$1}
  80     if [ $TLEN -gt 35 ]
  81     then
  82         printf "configure: %-20s := %.35s ...\n" $1 "$T"
  83     else
  84         printf "configure: %-20s := %s %s\n" $1 "$T" "$2"
  85     fi
  86     printf "%-20s := %s\n" $1 "$T" >>config.tmp
  87 }
  88
  89 putpathvar() {
  90     local T
  91     eval T=\$$1
  92     eval TLEN=\${#$1}
  93     if [ $TLEN -gt 35 ]
  94     then
  95         printf "configure: %-20s := %.35s ...\n" $1 "$T"
  96     else
  97         printf "configure: %-20s := %s %s\n" $1 "$T" "$2"
  98     fi
  99     if [ -z "$T" ]
 100     then
 101         printf "%-20s := \n" $1 >>config.tmp
 102     else
 103         printf "%-20s := \"%s\"\n" $1 "$T" >>config.tmp
 104     fi
 105 }
 106
 107 probe() {
 108     local V=$1
 109     shift
 110     local P
 111     local T
 112     for P
 113     do
 114         T=$(command -v $P 2>&1)
 115         if [ $? -eq 0 ]
 116         then
 117             VER0=$($P --version 2>/dev/null \
 118                 |  grep -o '[vV]\?[0-9][0-9.][a-z0-9.-]*' | head -1 )
 119             if [ $? -eq 0 -a "x${VER0}" != "x" ]
 120             then
 121               VER="($VER0)"
 122             else
 123               VER=""
 124             fi
 125             break
 126         else
 127             VER=""
 128             T=""
 129         fi
 130     done
 131     eval $V=\$T
 132     putpathvar $V "$VER"
 133 }
 134
 135 probe_need() {
 136     local V=$1
 137     probe $*
 138     eval VV=\$$V
 139     if [ -z "$VV" ]
 140     then
 141         err "needed, but unable to find any of: $*"
 142     fi
 143 }
 144
 145 validate_opt () {
 146     for arg in $CFG_CONFIGURE_ARGS
 147     do
 148         isArgValid=0
 149         for option in $BOOL_OPTIONS
 150         do
 151             if test --disable-$option = $arg
 152             then
 153                 isArgValid=1
 154             fi
 155             if test --enable-$option = $arg
 156             then
 157                 isArgValid=1
 158             fi
 159         done
 160         for option in $VAL_OPTIONS
 161         do
 162             if echo "$arg" | grep -q -- "--$option="
 163             then
 164                 isArgValid=1
 165             fi
 166         done
 167         if [ "$arg" = "--help" ]
 168         then
 169             echo
 170             echo "No more help available for Configure options,"
 171             echo "check the Wiki or join our IRC channel"
 172             break
 173         else
 174             if test $isArgValid -eq 0
 175             then
 176                 err "Option '$arg' is not recognized"
 177             fi
 178         fi
 179     done
 180 }
 181
 182 # `valopt OPTION_NAME DEFAULT DOC` extracts a string-valued option
 183 # from command line, using provided default value for the option if
 184 # not present, and saves it to the generated config.mk.
 185 #
 186 # `valopt_nosave` is much the same, except that it does not save the
 187 # result to config.mk (instead the script should use `putvar` itself
 188 # later on to save it).  `valopt_core` is the core upon which the
 189 # other two are built.
 190
 191 valopt_core() {
 192     VAL_OPTIONS="$VAL_OPTIONS $2"
 193
 194     local SAVE=$1
 195     local OP=$2
 196     local DEFAULT=$3
 197     shift
 198     shift
 199     shift
 200     local DOC="$*"
 201     if [ $HELP -eq 0 ]
 202     then
 203         local UOP=$(echo $OP | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
 204         local V="CFG_${UOP}"
 205         local V_PROVIDED="${V}_PROVIDED"
 206         eval $V="$DEFAULT"
 207         for arg in $CFG_CONFIGURE_ARGS
 208         do
 209             if echo "$arg" | grep -q -- "--$OP="
 210             then
 211                 val=$(echo "$arg" | cut -f2 -d=)
 212                 eval $V=$val
 213                 eval $V_PROVIDED=1
 214             fi
 215         done
 216         if [ "$SAVE" = "save" ]
 217         then
 218             putvar $V
 219         fi
 220     else
 221         if [ -z "$DEFAULT" ]
 222         then
 223             DEFAULT="<none>"
 224         fi
 225         OP="${OP}=[${DEFAULT}]"
 226         printf "    --%-30s %s\n" "$OP" "$DOC"
 227     fi
 228 }
 229
 230 valopt_nosave() {
 231     valopt_core nosave "$@"
 232 }
 233
 234 valopt() {
 235     valopt_core save "$@"
 236 }
 237
 238 # `opt OPTION_NAME DEFAULT DOC` extracts a boolean-valued option from
 239 # command line, using the provided default value (0/1) for the option
 240 # if not present, and saves it to the generated config.mk.
 241 #
 242 # `opt_nosave` is much the same, except that it does not save the
 243 # result to config.mk (instead the script should use `putvar` itself
 244 # later on to save it).  `opt_core` is the core upon which the other
 245 # two are built.
 246
 247 opt_core() {
 248     BOOL_OPTIONS="$BOOL_OPTIONS $2"
 249
 250     local SAVE=$1
 251     local OP=$2
 252     local DEFAULT=$3
 253     shift
 254     shift
 255     shift
 256     local DOC="$*"
 257     local FLAG=""
 258
 259     if [ $DEFAULT -eq 0 ]
 260     then
 261         FLAG="enable"
 262         DEFAULT_FLAG="disable"
 263     else
 264         FLAG="disable"
 265         DEFAULT_FLAG="enable"
 266         DOC="don't $DOC"
 267     fi
 268
 269     if [ $HELP -eq 0 ]
 270     then
 271         for arg in $CFG_CONFIGURE_ARGS
 272         do
 273             if [ "$arg" = "--${FLAG}-${OP}" ]
 274             then
 275                 OP=$(echo $OP | tr 'a-z-' 'A-Z_')
 276                 FLAG=$(echo $FLAG | tr 'a-z' 'A-Z')
 277                 local V="CFG_${FLAG}_${OP}"
 278                 local V_PROVIDED="CFG_${FLAG}_${OP}_PROVIDED"
 279                 eval $V=1
 280                 eval $V_PROVIDED=1
 281                 if [ "$SAVE" = "save" ]
 282                 then
 283                    putvar $V
 284                 fi
 285             elif [ "$arg" = "--${DEFAULT_FLAG}-${OP}" ]
 286             then
 287                 OP=$(echo $OP | tr 'a-z-' 'A-Z_')
 288                 DEFAULT_FLAG=$(echo $DEFAULT_FLAG | tr 'a-z' 'A-Z')
 289                 local V_PROVIDED="CFG_${DEFAULT_FLAG}_${OP}_PROVIDED"
 290                 eval $V_PROVIDED=1
 291             fi
 292         done
 293     else
 294         if [ -n "$META" ]
 295         then
 296             OP="$OP=<$META>"
 297         fi
 298         printf "    --%-30s %s\n" "$FLAG-$OP" "$DOC"
 299      fi
 300 }
 301
 302 opt_nosave() {
 303     opt_core nosave "$@"
 304 }
 305
 306 opt() {
 307     opt_core save "$@"
 308 }
 309
 310 envopt() {
 311     local NAME=$1
 312     local V="CFG_${NAME}"
 313     eval VV=\$$V
 314
 315     # If configure didn't set a value already, then check environment.
 316     #
 317     # (It is recommended that the configure script always check the
 318     # environment before setting any values to envopt variables; see
 319     # e.g.  how CFG_CC is handled, where it first checks `-z "$CC"`,
 320     # and issues msg if it ends up employing that provided value.)
 321     if [ -z "$VV" ]
 322     then
 323         eval $V=\$$NAME
 324         eval VV=\$$V
 325     fi
 326
 327     # If script or environment provided a value, save it.
 328     if [ -n "$VV" ]
 329     then
 330         putvar $V
 331     fi
 332 }
 333
 334 enable_if_not_disabled() {
 335     local OP=$1
 336     local UOP=$(echo $OP | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
 337     local ENAB_V="CFG_ENABLE_$UOP"
 338     local EXPLICITLY_DISABLED="CFG_DISABLE_${UOP}_PROVIDED"
 339     eval VV=\$$EXPLICITLY_DISABLED
 340     if [ -z "$VV" ]; then
 341         eval $ENAB_V=1
 342     fi
 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 $CFG_OSTYPE in
 398
 399     Linux)
 400         CFG_OSTYPE=unknown-linux-gnu
 401         ;;
 402
 403     FreeBSD)
 404         CFG_OSTYPE=unknown-freebsd
 405         ;;
 406
 407     DragonFly)
 408         CFG_OSTYPE=unknown-dragonfly
 409         ;;
 410
 411     Bitrig)
 412         CFG_OSTYPE=unknown-bitrig
 413         ;;
 414
 415     OpenBSD)
 416         CFG_OSTYPE=unknown-openbsd
 417        ;;
 418
 419     NetBSD)
 420             CFG_OSTYPE=unknown-netbsd
 421             ;;
 422
 423     Darwin)
 424         CFG_OSTYPE=apple-darwin
 425         ;;
 426
 427     SunOS)
 428         CFG_OSTYPE=sun-solaris
 429         CFG_CPUTYPE=$(isainfo -n)
 430         ;;
 431
 432     MINGW*)
 433         # msys' `uname` does not print gcc configuration, but prints msys
 434         # configuration. so we cannot believe `uname -m`:
 435         # msys1 is always i686 and msys2 is always x86_64.
 436         # instead, msys defines $MSYSTEM which is MINGW32 on i686 and
 437         # MINGW64 on x86_64.
 438         CFG_CPUTYPE=i686
 439         CFG_OSTYPE=pc-windows-gnu
 440         if [ "$MSYSTEM" = MINGW64 ]
 441         then
 442             CFG_CPUTYPE=x86_64
 443         fi
 444         ;;
 445
 446     MSYS*)
 447         CFG_OSTYPE=pc-windows-gnu
 448         ;;
 449
 450 # Thad's Cygwin identifiers below
 451
 452 #   Vista 32 bit
 453     CYGWIN_NT-6.0)
 454         CFG_OSTYPE=pc-windows-gnu
 455         CFG_CPUTYPE=i686
 456         ;;
 457
 458 #   Vista 64 bit
 459     CYGWIN_NT-6.0-WOW64)
 460         CFG_OSTYPE=pc-windows-gnu
 461         CFG_CPUTYPE=x86_64
 462         ;;
 463
 464 #   Win 7 32 bit
 465     CYGWIN_NT-6.1)
 466         CFG_OSTYPE=pc-windows-gnu
 467         CFG_CPUTYPE=i686
 468         ;;
 469
 470 #   Win 7 64 bit
 471     CYGWIN_NT-6.1-WOW64)
 472         CFG_OSTYPE=pc-windows-gnu
 473         CFG_CPUTYPE=x86_64
 474         ;;
 475
 476 #   Win 8 # uname -s on 64-bit cygwin does not contain WOW64, so simply use uname -m to detect arch (works in my install)
 477     CYGWIN_NT-6.3)
 478         CFG_OSTYPE=pc-windows-gnu
 479         ;;
 480 # We do not detect other OS such as XP/2003 using 64 bit using uname.
 481 # 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.
 482     *)
 483         err "unknown OS type: $CFG_OSTYPE"
 484         ;;
 485 esac
 486
 487
 488 case $CFG_CPUTYPE in
 489
 490     i386 | i486 | i686 | i786 | x86)
 491         CFG_CPUTYPE=i686
 492         ;;
 493
 494     xscale | arm)
 495         CFG_CPUTYPE=arm
 496         ;;
 497
 498     armv7l)
 499         CFG_CPUTYPE=arm
 500         CFG_OSTYPE="${CFG_OSTYPE}eabihf"
 501         ;;
 502
 503     aarch64)
 504         CFG_CPUTYPE=aarch64
 505         ;;
 506
 507     powerpc | ppc)
 508         CFG_CPUTYPE=powerpc
 509         ;;
 510
 511     powerpc64 | ppc64)
 512         CFG_CPUTYPE=powerpc64
 513         ;;
 514
 515     powerpc64le | ppc64le)
 516         CFG_CPUTYPE=powerpc64le
 517         ;;
 518
 519     x86_64 | x86-64 | x64 | amd64)
 520         CFG_CPUTYPE=x86_64
 521         ;;
 522
 523     *)
 524         err "unknown CPU type: $CFG_CPUTYPE"
 525 esac
 526
 527 # Detect 64 bit linux systems with 32 bit userland and force 32 bit compilation
 528 if [ $CFG_OSTYPE = unknown-linux-gnu -a $CFG_CPUTYPE = x86_64 ]
 529 then
 530     # $SHELL does not exist in standard 'sh', so probably only exists
 531     # if configure is running in an interactive bash shell. /usr/bin/env
 532     # exists *everywhere*.
 533     BIN_TO_PROBE="$SHELL"
 534     if [ ! -r "$BIN_TO_PROBE" ]; then
 535         if [ -r "/usr/bin/env" ]; then
 536             BIN_TO_PROBE="/usr/bin/env"
 537         else
 538             warn "Cannot check if the userland is i686 or x86_64"
 539         fi
 540     fi
 541     file -L "$BIN_TO_PROBE" | grep -q "x86[_-]64"
 542     if [ $? != 0 ]; then
 543         msg "i686 userland on x86_64 Linux kernel"
 544         CFG_CPUTYPE=i686
 545     fi
 546 fi
 547
 548
 549 DEFAULT_BUILD="${CFG_CPUTYPE}-${CFG_OSTYPE}"
 550
 551 CFG_SRC_DIR="$(abs_path $(dirname $0))/"
 552 CFG_SRC_DIR_RELATIVE="$(dirname $0)/"
 553 CFG_BUILD_DIR="$(pwd)/"
 554 CFG_SELF="$0"
 555 CFG_CONFIGURE_ARGS="$@"
 556
 557
 558 case "${CFG_SRC_DIR}" in
 559     *\ * )
 560         err "The path to the rust source directory contains spaces, which is not supported"
 561         ;;
 562     *)
 563         ;;
 564 esac
 565
 566
 567 OPTIONS=""
 568 HELP=0
 569 if [ "$1" = "--help" ]
 570 then
 571     HELP=1
 572     shift
 573     echo
 574     echo "Usage: $CFG_SELF [options]"
 575     echo
 576     echo "Options:"
 577     echo
 578 else
 579     msg "recreating config.tmp"
 580     echo '' >config.tmp
 581
 582     step_msg "processing $CFG_SELF args"
 583 fi
 584
 585 BOOL_OPTIONS=""
 586 VAL_OPTIONS=""
 587
 588 opt debug 0 "debug mode; disables optimization unless \`--enable-optimize\` given"
 589 opt valgrind 0 "run tests with valgrind (memcheck by default)"
 590 opt helgrind 0 "run tests with helgrind instead of memcheck"
 591 opt valgrind-rpass 1 "run rpass-valgrind tests with valgrind"
 592 opt docs     1 "build standard library documentation"
 593 opt compiler-docs     0 "build compiler documentation"
 594 opt optimize-tests 1 "build tests with optimizations"
 595 opt debuginfo-tests 0 "build tests with debugger metadata"
 596 opt libcpp 1 "build with llvm with libc++ instead of libstdc++ when using clang"
 597 opt llvm-assertions 0 "build LLVM with assertions"
 598 opt debug-assertions 0 "build with debugging assertions"
 599 opt fast-make 0 "use .gitmodules as timestamp for submodule deps"
 600 opt ccache 0 "invoke gcc/clang via ccache to reuse object files between builds"
 601 opt local-rust 0 "use an installed rustc rather than downloading a snapshot"
 602 opt llvm-static-stdcpp 0 "statically link to libstdc++ for LLVM"
 603 opt rpath 1 "build rpaths into rustc itself"
 604 opt stage0-landing-pads 1 "enable landing pads during bootstrap with stage0"
 605 # This is used by the automation to produce single-target nightlies
 606 opt dist-host-only 0 "only install bins for the host architecture"
 607 opt inject-std-version 1 "inject the current compiler version of libstd into programs"
 608 opt llvm-version-check 1 "check if the LLVM version is supported, build anyway"
 609 opt rustbuild 0 "use the rust and cargo based build system"
 610
 611 # Optimization and debugging options. These may be overridden by the release channel, etc.
 612 opt_nosave optimize 1 "build optimized rust code"
 613 opt_nosave optimize-cxx 1 "build optimized C++ code"
 614 opt_nosave optimize-llvm 1 "build optimized LLVM"
 615 opt_nosave llvm-assertions 0 "build LLVM with assertions"
 616 opt_nosave debug-assertions 0 "build with debugging assertions"
 617 opt_nosave debuginfo 0 "build with debugger metadata"
 618 opt_nosave debug-jemalloc 0 "build jemalloc with --enable-debug --enable-fill"
 619
 620 valopt localstatedir "/var/lib" "local state directory"
 621 valopt sysconfdir "/etc" "install system configuration files"
 622
 623 valopt datadir "${CFG_PREFIX}/share" "install data"
 624 valopt infodir "${CFG_PREFIX}/share/info" "install additional info"
 625 valopt llvm-root "" "set LLVM root"
 626 valopt python "" "set path to python"
 627 valopt jemalloc-root "" "set directory where libjemalloc_pic.a is located"
 628 valopt build "${DEFAULT_BUILD}" "GNUs ./configure syntax LLVM build triple"
 629 valopt android-cross-path "" "Android NDK standalone path (deprecated)"
 630 valopt i686-linux-android-ndk "" "i686-linux-android NDK standalone path"
 631 valopt arm-linux-androideabi-ndk "" "arm-linux-androideabi NDK standalone path"
 632 valopt aarch64-linux-android-ndk "" "aarch64-linux-android NDK standalone path"
 633 valopt nacl-cross-path  "" "NaCl SDK path (Pepper Canary is recommended). Must be absolute!"
 634 valopt release-channel "dev" "the name of the release channel to build"
 635 valopt musl-root "/usr/local" "MUSL root installation directory"
 636 valopt extra-filename "" "Additional data that is hashed and passed to the -C extra-filename flag"
 637
 638 # Used on systems where "cc" and "ar" are unavailable
 639 valopt default-linker "cc" "the default linker"
 640 valopt default-ar     "ar" "the default ar"
 641
 642 # Many of these are saved below during the "writing configuration" step
 643 # (others are conditionally saved).
 644 opt_nosave manage-submodules 1 "let the build manage the git submodules"
 645 opt_nosave clang 0 "prefer clang to gcc for building the runtime"
 646 opt_nosave jemalloc 1 "build liballoc with jemalloc"
 647 opt elf-tls 1 "elf thread local storage on platforms where supported"
 648
 649 valopt_nosave prefix "/usr/local" "set installation prefix"
 650 valopt_nosave local-rust-root "/usr/local" "set prefix for local rust binary"
 651 valopt_nosave host "${CFG_BUILD}" "GNUs ./configure syntax LLVM host triples"
 652 valopt_nosave target "${CFG_HOST}" "GNUs ./configure syntax LLVM target triples"
 653 valopt_nosave mandir "${CFG_PREFIX}/share/man" "install man pages in PATH"
 654
 655 # On Windows this determines root of the subtree for target libraries.
 656 # Host runtime libs always go to 'bin'.
 657 valopt libdir "${CFG_PREFIX}/lib" "install libraries"
 658
 659 case "$CFG_LIBDIR" in
 660     "$CFG_PREFIX"/*) CAT_INC=2;;
 661     "$CFG_PREFIX"*)  CAT_INC=1;;
 662     *)
 663         err "libdir must begin with the prefix. Use --prefix to set it accordingly.";;
 664 esac
 665
 666 CFG_LIBDIR_RELATIVE=`echo ${CFG_LIBDIR} | cut -c$((${#CFG_PREFIX}+${CAT_INC}))-`
 667
 668 if [ $HELP -eq 1 ]
 669 then
 670     echo
 671     exit 0
 672 fi
 673
 674 # Validate Options
 675 step_msg "validating $CFG_SELF args"
 676 validate_opt
 677
 678 # Validate the release channel, and configure options
 679 case "$CFG_RELEASE_CHANNEL" in
 680     nightly )
 681         msg "overriding settings for $CFG_RELEASE_CHANNEL"
 682         CFG_ENABLE_LLVM_ASSERTIONS=1
 683         ;;
 684     dev | beta | stable)
 685         ;;
 686     *)
 687         err "release channel must be 'dev', 'nightly', 'beta' or 'stable'"
 688         ;;
 689 esac
 690
 691 # Adjust perf and debug options for debug mode
 692 if [ -n "$CFG_ENABLE_DEBUG" ]; then
 693     msg "debug mode enabled, setting performance options"
 694     if [ -z "$CFG_ENABLE_OPTIMIZE_PROVIDED" ]; then
 695         msg "optimization not explicitly enabled, disabling optimization"
 696         CFG_DISABLE_OPTIMIZE=1
 697         CFG_DISABLE_OPTIMIZE_CXX=1
 698     fi
 699
 700     # Set following variables to 1 unless setting already provided
 701     enable_if_not_disabled debug-assertions
 702     enable_if_not_disabled debug-jemalloc
 703     enable_if_not_disabled debuginfo
 704     enable_if_not_disabled llvm-assertions
 705 fi
 706
 707 # OK, now write the debugging options
 708 if [ -n "$CFG_DISABLE_OPTIMIZE" ]; then putvar CFG_DISABLE_OPTIMIZE; fi
 709 if [ -n "$CFG_DISABLE_OPTIMIZE_CXX" ]; then putvar CFG_DISABLE_OPTIMIZE_CXX; fi
 710 if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then putvar CFG_DISABLE_OPTIMIZE_LLVM; fi
 711 if [ -n "$CFG_ENABLE_LLVM_ASSERTIONS" ]; then putvar CFG_ENABLE_LLVM_ASSERTIONS; fi
 712 if [ -n "$CFG_ENABLE_DEBUG_ASSERTIONS" ]; then putvar CFG_ENABLE_DEBUG_ASSERTIONS; fi
 713 if [ -n "$CFG_ENABLE_DEBUGINFO" ]; then putvar CFG_ENABLE_DEBUGINFO; fi
 714 if [ -n "$CFG_ENABLE_DEBUG_JEMALLOC" ]; then putvar CFG_ENABLE_DEBUG_JEMALLOC; fi
 715
 716 # A magic value that allows the compiler to use unstable features
 717 # during the bootstrap even when doing so would normally be an error
 718 # because of feature staging or because the build turns on
 719 # warnings-as-errors and unstable features default to warnings.  The
 720 # build has to match this key in an env var. Meant to be a mild
 721 # deterrent from users just turning on unstable features on the stable
 722 # channel.
 723 # Basing CFG_BOOTSTRAP_KEY on CFG_BOOTSTRAP_KEY lets it get picked up
 724 # during a Makefile reconfig.
 725 CFG_BOOTSTRAP_KEY="${CFG_BOOTSTRAP_KEY-`date +%H:%M:%S`}"
 726 putvar CFG_BOOTSTRAP_KEY
 727
 728 step_msg "looking for build programs"
 729
 730 probe_need CFG_CURLORWGET  curl wget
 731 if [ -z "$CFG_PYTHON_PROVIDED" ]; then
 732     probe_need CFG_PYTHON      python2.7 python2 python
 733 fi
 734
 735 python_version=$($CFG_PYTHON -V 2>&1)
 736 if [ $(echo $python_version | grep -c '^Python 2\.7') -ne 1 ]; then
 737     err "Found $python_version, but Python 2.7 is required"
 738 fi
 739
 740 # If we have no git directory then we are probably a tarball distribution
 741 # and shouldn't attempt to load submodules
 742 if [ ! -e ${CFG_SRC_DIR}.git ]
 743 then
 744     probe CFG_GIT          git
 745     msg "git: no git directory. disabling submodules"
 746     CFG_DISABLE_MANAGE_SUBMODULES=1
 747 else
 748     probe_need CFG_GIT     git
 749 fi
 750
 751 # Use `md5sum` on GNU platforms, or `md5 -q` on BSD
 752 probe CFG_MD5              md5
 753 probe CFG_MD5SUM           md5sum
 754 if [ -n "$CFG_MD5" ]
 755 then
 756     CFG_HASH_COMMAND="$CFG_MD5 -q | cut -c 1-8"
 757 elif [ -n "$CFG_MD5SUM" ]
 758 then
 759     CFG_HASH_COMMAND="$CFG_MD5SUM | cut -c 1-8"
 760 else
 761     err 'could not find one of: md5 md5sum'
 762 fi
 763 putvar CFG_HASH_COMMAND
 764
 765 probe CFG_CLANG            clang++
 766 probe CFG_CCACHE           ccache
 767 probe CFG_GCC              gcc
 768 probe CFG_LD               ld
 769 probe CFG_VALGRIND         valgrind
 770 probe CFG_PERF             perf
 771 probe CFG_ISCC             iscc
 772 probe CFG_ANTLR4           antlr4
 773 probe CFG_GRUN             grun
 774 probe CFG_FLEX             flex
 775 probe CFG_BISON            bison
 776 probe CFG_GDB              gdb
 777 probe CFG_LLDB             lldb
 778
 779 # On MacOS X, invoking `javac` pops up a dialog if the JDK is not
 780 # installed. Since `javac` is only used if `antlr4` is available,
 781 # probe for it only in this case.
 782 if [ -n "$CFG_ANTLR4" ]
 783 then
 784    probe CFG_JAVAC            javac
 785 fi
 786
 787 # the valgrind rpass tests will fail if you don't have a valgrind, but they're
 788 # only disabled if you opt out.
 789 if [ -z "$CFG_VALGRIND" ]
 790 then
 791     # If the user has explicitly asked for valgrind tests, then fail
 792     if [ -n "$CFG_ENABLE_VALGRIND" ] && [ -n "$CFG_ENABLE_VALGRIND_PROVIDED" ]
 793     then
 794         err "No valgrind present, but valgrind tests explicitly requested"
 795     else
 796         CFG_DISABLE_VALGRIND_RPASS=1
 797         putvar CFG_DISABLE_VALGRIND_RPASS
 798     fi
 799 fi
 800
 801 if [ -n "$CFG_GDB" ]
 802 then
 803     # Store GDB's version
 804     CFG_GDB_VERSION=$($CFG_GDB --version 2>/dev/null | head -1)
 805     putvar CFG_GDB_VERSION
 806 fi
 807
 808 if [ -n "$CFG_LLDB" ]
 809 then
 810     # Store LLDB's version
 811     CFG_LLDB_VERSION=$($CFG_LLDB --version 2>/dev/null | head -1)
 812     putvar CFG_LLDB_VERSION
 813
 814     # If CFG_LLDB_PYTHON_DIR is not already set from the outside and valid, try to read it from
 815     # LLDB via the -P commandline options.
 816     if [ -z "$CFG_LLDB_PYTHON_DIR" ] || [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 817     then
 818         CFG_LLDB_PYTHON_DIR=$($CFG_LLDB -P)
 819
 820         # If CFG_LLDB_PYTHON_DIR is not a valid directory, set it to something more readable
 821         if [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 822         then
 823             CFG_LLDB_PYTHON_DIR="LLDB_PYTHON_DIRECTORY_NOT_FOUND"
 824         fi
 825
 826         putvar CFG_LLDB_PYTHON_DIR
 827     fi
 828 fi
 829
 830 step_msg "looking for target specific programs"
 831
 832 probe CFG_ADB        adb
 833
 834 BIN_SUF=
 835 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ]
 836 then
 837     BIN_SUF=.exe
 838 fi
 839
 840 if [ -n "$CFG_ENABLE_LOCAL_RUST" ]
 841 then
 842     system_rustc=$(which rustc)
 843     if [ -f ${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF} ]
 844     then
 845         : # everything already configured
 846     elif [ -n "$system_rustc" ]
 847     then
 848         # we assume that rustc is in a /bin directory
 849         CFG_LOCAL_RUST_ROOT=${system_rustc%/bin/rustc}
 850     else
 851         err "no local rust to use"
 852     fi
 853
 854     CMD="${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF}"
 855     LRV=`$CMD --version`
 856     if [ $? -ne 0 ]
 857     then
 858         step_msg "failure while running $CMD --version"
 859         exit 1
 860     fi
 861     step_msg "using rustc at: ${CFG_LOCAL_RUST_ROOT} with version: $LRV"
 862     putvar CFG_LOCAL_RUST_ROOT
 863 fi
 864
 865 # Force bitrig to build with clang; gcc doesn't like us there
 866 if [ $CFG_OSTYPE = unknown-bitrig ]
 867 then
 868     step_msg "on Bitrig, forcing use of clang"
 869     CFG_ENABLE_CLANG=1
 870 fi
 871
 872 # default gcc version under OpenBSD maybe too old, try using egcc, which is a
 873 # gcc version from ports
 874 if [ $CFG_OSTYPE = unknown-openbsd ]
 875 then
 876     if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
 877         step_msg "older GCC found, try with egcc instead"
 878
 879         # probe again but using egcc
 880         probe CFG_GCC egcc
 881
 882         # and use egcc/eg++ for CC/CXX too if it was found
 883         # (but user setting has priority)
 884         if [ -n "$CFG_GCC" ]; then
 885             CC="${CC:-egcc}"
 886             CXX="${CXX:-eg++}"
 887         fi
 888     fi
 889 fi
 890
 891 # OS X 10.9, gcc is actually clang. This can cause some confusion in the build
 892 # system, so if we find that gcc is clang, we should just use clang directly.
 893 if [ $CFG_OSTYPE = apple-darwin -a -z "$CFG_ENABLE_CLANG" ]
 894 then
 895     CFG_OSX_GCC_VERSION=$("$CFG_GCC" --version 2>&1 | grep "Apple LLVM version")
 896     if [ $? -eq 0 ]
 897     then
 898         step_msg "on OS X >=10.9, forcing use of clang"
 899         CFG_ENABLE_CLANG=1
 900     else
 901         if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
 902             step_msg "older GCC found, using clang instead"
 903             CFG_ENABLE_CLANG=1
 904         else
 905             # on OS X, with xcode 5 and newer, certain developers may have
 906             # cc, gcc and g++ point to a  mixture of clang and gcc
 907             # if so, this will create very strange build errors
 908             # this last stanza is to detect some such problems and save the future rust
 909             # contributor some time solving that issue.
 910             # this detection could be generalized to other OSes aside from OS X
 911             # but the issue seems most likely to happen on OS X
 912
 913             chk_cc () {
 914                 $1 --version 2> /dev/null | grep -q $2
 915             }
 916             # check that gcc, cc and g++ all point to the same compiler.
 917             # note that for xcode 5, g++ points to clang, not clang++
 918             if !((chk_cc gcc clang  && chk_cc g++ clang) ||
 919                 (chk_cc gcc gcc  &&( chk_cc g++ g++ || chk g++ gcc))); then
 920                 err "the gcc and g++ in your path point to different compilers.
 921     Check which versions are in your path with gcc --version and g++ --version.
 922     To resolve this problem, either fix your PATH  or run configure with --enable-clang"
 923             fi
 924
 925         fi
 926     fi
 927 fi
 928
 929 # If the clang isn't already enabled, check for GCC, and if it is missing, turn
 930 # on clang as a backup.
 931 if [ -z "$CFG_ENABLE_CLANG" ]
 932 then
 933   CFG_GCC_VERSION=$("$CFG_GCC" --version 2>&1)
 934   if [ $? -ne 0 ]
 935   then
 936     step_msg "GCC not installed, will try using Clang"
 937     CFG_ENABLE_CLANG=1
 938   fi
 939 fi
 940
 941 # Okay, at this point, we have made up our minds about whether we are
 942 # going to force CFG_ENABLE_CLANG or not; save the setting if so.
 943 if [ -n "$CFG_ENABLE_CLANG" ]
 944 then
 945     putvar CFG_ENABLE_CLANG
 946 fi
 947
 948 if [ -z "$CFG_DISABLE_LIBCPP" -a -n "$CFG_ENABLE_CLANG" ]
 949 then
 950     CFG_USING_LIBCPP="1"
 951 else
 952     CFG_USING_LIBCPP="0"
 953 fi
 954
 955 # Same with jemalloc.  save the setting here.
 956 if [ -n "$CFG_DISABLE_JEMALLOC" ]
 957 then
 958     putvar CFG_DISABLE_JEMALLOC
 959 fi
 960
 961 if [ -n "$CFG_LLVM_ROOT" -a -z "$CFG_DISABLE_LLVM_VERSION_CHECK" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
 962 then
 963     step_msg "using custom LLVM at $CFG_LLVM_ROOT"
 964
 965     LLVM_CONFIG="$CFG_LLVM_ROOT/bin/llvm-config"
 966     LLVM_VERSION=$($LLVM_CONFIG --version)
 967
 968     case $LLVM_VERSION in
 969         (3.[5-8]*)
 970             msg "found ok version of LLVM: $LLVM_VERSION"
 971             ;;
 972         (*)
 973             err "bad LLVM version: $LLVM_VERSION, need >=3.5"
 974             ;;
 975     esac
 976 fi
 977
 978 # Even when the user overrides the choice of CC, still try to detect
 979 # clang to disable some clang-specific warnings.  We here draw a
 980 # distinction between:
 981 #
 982 #  CFG_ENABLE_CLANG : passed --enable-clang, or host "requires" clang,
 983 #  CFG_USING_CLANG : compiler (clang / gcc / $CC) looks like clang.
 984 #
 985 # This distinction is important because there are some safeguards we
 986 # would prefer to skip when merely CFG_USING_CLANG is set; but when
 987 # CFG_ENABLE_CLANG is set, that indicates that we are opting into
 988 # running such safeguards.
 989
 990 if [ -n "$CC" ]
 991 then
 992     msg "skipping compiler inference steps; using provided CC=$CC"
 993     CFG_CC="$CC"
 994
 995     CFG_OSX_CC_VERSION=$("$CFG_CC" --version 2>&1 | grep "clang")
 996     if [ $? -eq 0 ]
 997     then
 998         step_msg "note, user-provided CC looks like clang; CC=$CC."
 999         CFG_USING_CLANG=1
1000         putvar CFG_USING_CLANG
1001     fi
1002 else
1003     if [ -n "$CFG_ENABLE_CLANG" ]
1004     then
1005         if [ -z "$CFG_CLANG" ]
1006         then
1007             err "clang requested but not found"
1008         fi
1009         CFG_CC="$CFG_CLANG"
1010         CFG_USING_CLANG=1
1011         putvar CFG_USING_CLANG
1012     else
1013         CFG_CC="gcc"
1014     fi
1015 fi
1016
1017 if [ -n "$CFG_ENABLE_CLANG" ]
1018 then
1019     case "$CC" in
1020         (''|*clang)
1021         CFG_CLANG_REPORTED_VERSION=$($CFG_CC --version | grep version)
1022
1023         if echo $CFG_CLANG_REPORTED_VERSION | grep -q "(based on LLVM "; then
1024             CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*(based on LLVM \(.*\))/\1/')
1025         elif echo $CFG_CLANG_REPORTED_VERSION | grep -q "Apple LLVM"; then
1026             CFG_OSX_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1027         else
1028             CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1029         fi
1030
1031         if [ -n "$CFG_OSX_CLANG_VERSION" ]
1032         then
1033             case $CFG_OSX_CLANG_VERSION in
1034                 (7.0* | 7.1* | 7.2*)
1035                 step_msg "found ok version of APPLE CLANG: $CFG_OSX_CLANG_VERSION"
1036                 ;;
1037                 (*)
1038                 err "bad APPLE CLANG version: $CFG_OSX_CLANG_VERSION, need >=7.0"
1039                 ;;
1040             esac
1041         else
1042             case $CFG_CLANG_VERSION in
1043                 (3.2* | 3.3* | 3.4* | 3.5* | 3.6* | 3.7* | 3.8* | 3.9*)
1044                 step_msg "found ok version of CLANG: $CFG_CLANG_VERSION"
1045                 ;;
1046                 (*)
1047                 err "bad CLANG version: $CFG_CLANG_VERSION, need >=3.0svn"
1048                 ;;
1049             esac
1050         fi
1051
1052         if [ -z "$CC" ]
1053         then
1054             CFG_CC="clang"
1055             CFG_CXX="clang++"
1056         fi
1057     esac
1058 fi
1059
1060 if [ -n "$CFG_ENABLE_CCACHE" ]
1061 then
1062     if [ -z "$CFG_CCACHE" ]
1063     then
1064         err "ccache requested but not found"
1065     fi
1066
1067     CFG_CC="ccache $CFG_CC"
1068 fi
1069
1070 if [ -z "$CC" -a -z "$CFG_ENABLE_CLANG" -a -z "$CFG_GCC" ]
1071 then
1072     err "either clang or gcc is required"
1073 fi
1074
1075 # All safeguards based on $CFG_ENABLE_CLANG should occur before this
1076 # point in the script; after this point, script logic should inspect
1077 # $CFG_USING_CLANG rather than $CFG_ENABLE_CLANG.
1078
1079 # Set CFG_{CC,CXX,CPP,CFLAGS,CXXFLAGS,LDFLAGS}
1080 envopt CC
1081 envopt CXX
1082 envopt CPP
1083 envopt CFLAGS
1084 envopt CXXFLAGS
1085 envopt LDFLAGS
1086
1087 # stdc++ name in use
1088 # used to manage non-standard name (on OpenBSD for example)
1089 program_transform_name=$($CFG_CC -v 2>&1 | sed -n "s/.*--program-transform-name='\([^']*\)'.*/\1/p")
1090 CFG_STDCPP_NAME=$(echo "stdc++" | sed "${program_transform_name}")
1091 putvar CFG_STDCPP_NAME
1092
1093 # a little post-processing of various config values
1094 CFG_PREFIX=${CFG_PREFIX%/}
1095 CFG_MANDIR=${CFG_MANDIR%/}
1096 CFG_HOST="$(echo $CFG_HOST | tr ',' ' ')"
1097 CFG_TARGET="$(echo $CFG_TARGET | tr ',' ' ')"
1098 CFG_SUPPORTED_TARGET=""
1099 for target_file in ${CFG_SRC_DIR}mk/cfg/*.mk; do
1100   CFG_SUPPORTED_TARGET="${CFG_SUPPORTED_TARGET} $(basename "$target_file" .mk)"
1101 done
1102
1103 # copy build-triples to host-triples so that builds are a subset of hosts
1104 V_TEMP=""
1105 for i in $CFG_BUILD $CFG_HOST;
1106 do
1107    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1108 done
1109 CFG_HOST=$V_TEMP
1110
1111 # copy host-triples to target-triples so that hosts are a subset of targets
1112 V_TEMP=""
1113 for i in $CFG_HOST $CFG_TARGET;
1114 do
1115    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1116 done
1117 CFG_TARGET=$V_TEMP
1118
1119 # check target-specific tool-chains
1120 for i in $CFG_TARGET
1121 do
1122     L_CHECK=false
1123     for j in $CFG_SUPPORTED_TARGET
1124     do
1125         if [ $i = $j ]
1126         then
1127             L_CHECK=true
1128         fi
1129     done
1130
1131     if [ $L_CHECK = false ]
1132     then
1133         err "unsupported target triples \"$i\" found"
1134     fi
1135
1136     case $i in
1137         *android*)
1138             upper_snake_target=$(echo "$i" | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
1139             eval ndk=\$"CFG_${upper_snake_target}_NDK"
1140             if [ -z "$ndk" ]
1141             then
1142                 ndk=$CFG_ANDROID_CROSS_PATH
1143                 eval "CFG_${upper_snake_target}_NDK"=$CFG_ANDROID_CROSS_PATH
1144                 warn "generic/default Android NDK option is deprecated (use --$i-ndk option instead)"
1145             fi
1146
1147             # Perform a basic sanity check of the NDK
1148             for android_ndk_tool in "$ndk/bin/$i-gcc" "$ndk/bin/$i-g++" "$ndk/bin/$i-ar"
1149             do
1150                 if [ ! -f $android_ndk_tool ]
1151                 then
1152                     err "NDK tool $android_ndk_tool not found (bad or missing --$i-ndk option?)"
1153                 fi
1154             done
1155             ;;
1156         *-unknown-nacl)
1157             if [ -z "$CFG_NACL_CROSS_PATH" ]
1158             then
1159                 err "I need the NaCl SDK path! (use --nacl-cross-path)"
1160             fi
1161             ;;
1162         arm-apple-darwin)
1163             if [ $CFG_OSTYPE != apple-darwin ]
1164             then
1165                 err "The iOS target is only supported on Mac OS X"
1166             fi
1167             ;;
1168
1169
1170         x86_64-*-musl)
1171             if [ ! -f $CFG_MUSL_ROOT/lib/libc.a ]
1172             then
1173                 err "musl libc $CFG_MUSL_ROOT/lib/libc.a not found"
1174             fi
1175             ;;
1176
1177         *-msvc)
1178             # There are some MSYS python builds which will auto-translate
1179             # windows-style paths to MSYS-style paths in Python itself.
1180             # Unfortunately this breaks LLVM's build system as somewhere along
1181             # the line LLVM prints a path into a file from Python and then CMake
1182             # later tries to interpret that path. If Python prints a MSYS path
1183             # and CMake tries to use it as a Windows path, you're gonna have a
1184             # Bad Time.
1185             #
1186             # Consequently here we try to detect when that happens and print an
1187             # error if it does.
1188             if $CFG_PYTHON -c 'import sys; print sys.argv[1]' `pwd` | grep '^/' > /dev/null
1189             then
1190                 err "
1191
1192 python is silently translating windows paths to MSYS paths \
1193 and the build will fail if this python is used.
1194
1195 Either an official python install must be used or an \
1196 alternative python package in MinGW must be used.
1197
1198 If you are building under msys2 try installing the mingw-w64-x86_64-python2 \
1199 package instead of python2:
1200
1201 $ pacman -R python2 && pacman -S mingw-w64-x86_64-python2
1202 "
1203             fi
1204
1205             # MSVC requires cmake because that's how we're going to build LLVM
1206             probe_need CFG_CMAKE cmake
1207
1208             # There are three builds of cmake on windows: MSVC, MinGW and Cygwin
1209             # The Cygwin build does not have generators for Visual Studio, so
1210             # detect that here and error.
1211             if ! "$CFG_CMAKE" --help | sed -n '/^Generators/,$p' | grep 'Visual Studio' > /dev/null
1212             then
1213                 err "
1214
1215 cmake does not support Visual Studio generators.
1216
1217 This is likely due to it being an msys/cygwin build of cmake, \
1218 rather than the required windows version, built using MinGW \
1219 or Visual Studio.
1220
1221 If you are building under msys2 try installing the mingw-w64-x86_64-cmake \
1222 package instead of cmake:
1223
1224 $ pacman -R cmake && pacman -S mingw-w64-x86_64-cmake
1225 "
1226             fi
1227
1228             # Use the REG program to figure out where VS is installed
1229             # We need to figure out where cl.exe and link.exe are, so we do some
1230             # munging and some probing here. We also look for the default
1231             # INCLUDE and LIB variables for MSVC so we can set those in the
1232             # build system as well.
1233             install=$(cmd //c reg QUERY \
1234                        'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\14.0' \
1235                        -v InstallDir)
1236             if [ -z "$install" ]; then
1237               install=$(cmd //c reg QUERY \
1238                          'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\12.0' \
1239                          -v InstallDir)
1240             fi
1241             need_ok "couldn't find visual studio install root"
1242             CFG_MSVC_ROOT=$(echo "$install" | grep InstallDir | sed 's/.*REG_SZ[ ]*//')
1243             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1244             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1245             putvar CFG_MSVC_ROOT
1246
1247             case $i in
1248                 x86_64-*)
1249                     bits=x86_64
1250                     msvc_part=amd64
1251                     ;;
1252                 i686-*)
1253                     bits=i386
1254                     msvc_part=
1255                     ;;
1256                 *)
1257                     err "can only target x86 targets for MSVC"
1258                     ;;
1259             esac
1260             bindir="${CFG_MSVC_ROOT}/VC/bin"
1261             if [ -n "$msvc_part" ]; then
1262                 bindir="$bindir/$msvc_part"
1263             fi
1264             eval CFG_MSVC_BINDIR_$bits="\"$bindir\""
1265             eval CFG_MSVC_CL_$bits="\"$bindir/cl.exe\""
1266             eval CFG_MSVC_LIB_$bits="\"$bindir/lib.exe\""
1267             eval CFG_MSVC_LINK_$bits="\"$bindir/link.exe\""
1268
1269             vcvarsall="${CFG_MSVC_ROOT}/VC/vcvarsall.bat"
1270             include_path=$(cmd //V:ON //c "$vcvarsall" $msvc_part \& echo !INCLUDE!)
1271             need_ok "failed to learn about MSVC's INCLUDE"
1272             lib_path=$(cmd //V:ON //c "$vcvarsall" $msvc_part \& echo !LIB!)
1273             need_ok "failed to learn about MSVC's LIB"
1274
1275             eval CFG_MSVC_INCLUDE_PATH_${bits}="\"$include_path\""
1276             eval CFG_MSVC_LIB_PATH_${bits}="\"$lib_path\""
1277
1278             putvar CFG_MSVC_BINDIR_${bits}
1279             putvar CFG_MSVC_CL_${bits}
1280             putvar CFG_MSVC_LIB_${bits}
1281             putvar CFG_MSVC_LINK_${bits}
1282             putvar CFG_MSVC_INCLUDE_PATH_${bits}
1283             putvar CFG_MSVC_LIB_PATH_${bits}
1284             ;;
1285
1286         *)
1287             ;;
1288     esac
1289 done
1290
1291 if [ -n "$CFG_PERF" ]
1292 then
1293     HAVE_PERF_LOGFD=`$CFG_PERF stat --log-fd 2>&1 | grep 'unknown option'`
1294     if [ -z "$HAVE_PERF_LOGFD" ];
1295     then
1296         CFG_PERF_WITH_LOGFD=1
1297         putvar CFG_PERF_WITH_LOGFD
1298     fi
1299 fi
1300
1301 if [ -z "$CFG_ENABLE_RUSTBUILD" ]; then
1302
1303   step_msg "making directories"
1304
1305   for i in \
1306       doc doc/std doc/extra \
1307       dl tmp dist
1308   do
1309       make_dir $i
1310   done
1311
1312   for t in $CFG_HOST
1313   do
1314       make_dir $t/llvm
1315   done
1316
1317   for t in $CFG_HOST
1318   do
1319       make_dir $t/rustllvm
1320   done
1321
1322   for t in $CFG_TARGET
1323   do
1324     make_dir $t/rt
1325     for s in 0 1 2 3
1326     do
1327       make_dir $t/rt/stage$s
1328       make_dir $t/rt/jemalloc
1329       make_dir $t/rt/compiler-rt
1330       for i in                                          \
1331         isaac sync test \
1332         arch/i386 arch/x86_64 arch/arm arch/aarch64 arch/mips arch/powerpc
1333       do
1334         make_dir $t/rt/stage$s/$i
1335       done
1336     done
1337   done
1338
1339   for h in $CFG_HOST
1340   do
1341       for t in $CFG_TARGET
1342       do
1343           # host bin dir stage0
1344           make_dir $h/stage0/bin
1345
1346           # host lib dir stage0
1347           make_dir $h/stage0/lib
1348
1349           # host test dir stage0
1350           make_dir $h/stage0/test
1351
1352           # target bin dir stage0
1353           make_dir $h/stage0/lib/rustlib/$t/bin
1354
1355           # target lib dir stage0
1356           make_dir $h/stage0/lib/rustlib/$t/lib
1357
1358           for i in 1 2 3
1359           do
1360               # host bin dir
1361               make_dir $h/stage$i/bin
1362
1363               # host lib dir
1364               make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE
1365
1366               # host test dir
1367               make_dir $h/stage$i/test
1368
1369               # target bin dir
1370               make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/bin
1371
1372               # target lib dir
1373               make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/lib
1374           done
1375       done
1376
1377       make_dir $h/test/run-pass
1378       make_dir $h/test/run-pass-valgrind
1379       make_dir $h/test/run-pass-fulldeps
1380       make_dir $h/test/run-fail
1381       make_dir $h/test/run-fail-fulldeps
1382       make_dir $h/test/compile-fail
1383       make_dir $h/test/parse-fail
1384       make_dir $h/test/compile-fail-fulldeps
1385       make_dir $h/test/bench
1386       make_dir $h/test/perf
1387       make_dir $h/test/pretty
1388       make_dir $h/test/debuginfo-gdb
1389       make_dir $h/test/debuginfo-lldb
1390       make_dir $h/test/codegen
1391       make_dir $h/test/codegen-units
1392       make_dir $h/test/rustdoc
1393   done
1394
1395 fi
1396
1397 # Configure submodules
1398 step_msg "configuring submodules"
1399
1400 # Have to be in the top of src directory for this
1401 if [ -z $CFG_DISABLE_MANAGE_SUBMODULES ] && [ -z $CFG_ENABLE_RUSTBUILD ]
1402 then
1403     cd ${CFG_SRC_DIR}
1404
1405     msg "git: submodule sync"
1406     "${CFG_GIT}" submodule sync
1407
1408     msg "git: submodule init"
1409     "${CFG_GIT}" submodule init
1410
1411     # Disable submodules that we're not using
1412     if [ -n "${CFG_LLVM_ROOT}" ]; then
1413         msg "git: submodule deinit src/llvm"
1414         "${CFG_GIT}" submodule deinit src/llvm
1415     fi
1416     if [ -n "${CFG_JEMALLOC_ROOT}" ]; then
1417         msg "git: submodule deinit src/jemalloc"
1418         "${CFG_GIT}" submodule deinit src/jemalloc
1419     fi
1420
1421     msg "git: submodule update"
1422     "${CFG_GIT}" submodule update
1423     need_ok "git failed"
1424
1425     msg "git: submodule foreach sync"
1426     "${CFG_GIT}" submodule foreach --recursive 'if test -e .gitmodules; then git submodule sync; fi'
1427     need_ok "git failed"
1428
1429     msg "git: submodule foreach update"
1430     "${CFG_GIT}" submodule update --recursive
1431     need_ok "git failed"
1432
1433     # NB: this is just for the sake of getting the submodule SHA1 values
1434     # and status written into the build log.
1435     msg "git: submodule status"
1436     "${CFG_GIT}" submodule status --recursive
1437
1438     msg "git: submodule clobber"
1439     "${CFG_GIT}" submodule foreach --recursive git clean -dxf
1440     need_ok "git failed"
1441     "${CFG_GIT}" submodule foreach --recursive git checkout .
1442     need_ok "git failed"
1443
1444     cd ${CFG_BUILD_DIR}
1445 fi
1446
1447 # Configure llvm, only if necessary
1448 step_msg "looking at LLVM"
1449 CFG_LLVM_SRC_DIR=${CFG_SRC_DIR}src/llvm/
1450 for t in $CFG_HOST
1451 do
1452     do_reconfigure=1
1453     is_msvc=0
1454     case "$t" in
1455         (*-msvc)
1456         is_msvc=1
1457         ;;
1458     esac
1459
1460     if [ -n "$CFG_ENABLE_RUSTBUILD" ]
1461     then
1462         msg "not configuring LLVM, rustbuild in use"
1463         do_reconfigure=0
1464     elif [ -z $CFG_LLVM_ROOT ]
1465     then
1466         LLVM_BUILD_DIR=${CFG_BUILD_DIR}$t/llvm
1467         if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]
1468         then
1469             LLVM_DBG_OPTS="--enable-debug-symbols --disable-optimized"
1470             # Just use LLVM straight from its build directory to
1471             # avoid 'make install' time
1472             LLVM_INST_DIR=$LLVM_BUILD_DIR/Debug
1473         else
1474             LLVM_DBG_OPTS="--enable-optimized"
1475             LLVM_INST_DIR=$LLVM_BUILD_DIR/Release
1476         fi
1477         if [ -z "$CFG_ENABLE_LLVM_ASSERTIONS" ]
1478         then
1479             LLVM_ASSERTION_OPTS="--disable-assertions"
1480         else
1481             LLVM_ASSERTION_OPTS="--enable-assertions"
1482
1483             # Apparently even if we request assertions be enabled for MSVC,
1484             # LLVM's CMake build system ignore this and outputs in `Release`
1485             # anyway.
1486             if [ ${is_msvc} -eq 0 ]; then
1487                 LLVM_INST_DIR=${LLVM_INST_DIR}+Asserts
1488             fi
1489         fi
1490     else
1491         msg "not reconfiguring LLVM, external LLVM root"
1492         # The user is using their own LLVM
1493         LLVM_BUILD_DIR=
1494         LLVM_INST_DIR=$CFG_LLVM_ROOT
1495         do_reconfigure=0
1496         # Check that LLVm FileCheck is available. Needed for the tests
1497         need_cmd $LLVM_INST_DIR/bin/FileCheck
1498     fi
1499
1500     if [ ${do_reconfigure} -ne 0 ]
1501     then
1502     # because git is hilarious, it might have put the module index
1503     # in a couple places.
1504         index1="${CFG_SRC_DIR}.git/modules/src/llvm/index"
1505         index2="${CFG_SRC_DIR}src/llvm/.git/index"
1506         for index in ${index1} ${index2}
1507         do
1508             config_status="${LLVM_BUILD_DIR}/config.status"
1509             if test -e ${index} -a \
1510                     -e ${config_status} -a \
1511                     ${config_status} -nt ${index}
1512             then
1513                 msg "not reconfiguring LLVM, config.status is fresh"
1514                 do_reconfigure=0
1515             fi
1516         done
1517     fi
1518
1519     # We need the generator later on for compiler-rt even if LLVM's not built
1520     if [ ${is_msvc} -ne 0 ]
1521     then
1522         case "$CFG_MSVC_ROOT" in
1523             *14.0*)
1524                 generator="Visual Studio 14 2015"
1525                 ;;
1526             *12.0*)
1527                 generator="Visual Studio 12 2013"
1528                 ;;
1529             *)
1530                 err "can't determine generator for LLVM cmake"
1531                 ;;
1532         esac
1533         case "$t" in
1534             x86_64-*)
1535                 generator="$generator Win64"
1536                 ;;
1537             i686-*)
1538                 ;;
1539             *)
1540                 err "can only build LLVM for x86 platforms"
1541                 ;;
1542         esac
1543         CFG_CMAKE_GENERATOR=$generator
1544         putvar CFG_CMAKE_GENERATOR
1545     fi
1546
1547     if [ ${do_reconfigure} -ne 0 ] && [ ${is_msvc} -ne 0 ]
1548     then
1549         msg "configuring LLVM for $t with cmake"
1550
1551         CMAKE_ARGS="-DLLVM_INCLUDE_TESTS=OFF"
1552         if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then
1553             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Debug"
1554         else
1555             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Release"
1556         fi
1557         if [ -z "$CFG_ENABLE_LLVM_ASSERTIONS" ]
1558         then
1559             CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=OFF"
1560         else
1561             CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=ON"
1562         fi
1563
1564         msg "configuring LLVM with:"
1565         msg "$CMAKE_ARGS"
1566
1567         (cd $LLVM_BUILD_DIR && "$CFG_CMAKE" $CFG_LLVM_SRC_DIR \
1568                                             -G "$CFG_CMAKE_GENERATOR" \
1569                                             $CMAKE_ARGS)
1570         need_ok "LLVM cmake configure failed"
1571     fi
1572
1573     if [ ${do_reconfigure} -ne 0 ] && [ ${is_msvc} -eq 0 ]
1574     then
1575         # LLVM's configure doesn't recognize the new Windows triples yet
1576         gnu_t=$(to_gnu_triple $t)
1577
1578         msg "configuring LLVM for $gnu_t"
1579
1580         LLVM_TARGETS="--enable-targets=x86,x86_64,arm,aarch64,mips,powerpc"
1581         LLVM_BUILD="--build=$gnu_t"
1582         LLVM_HOST="--host=$gnu_t"
1583         LLVM_TARGET="--target=$gnu_t"
1584
1585         # Disable unused LLVM features
1586         LLVM_OPTS="$LLVM_DBG_OPTS $LLVM_ASSERTION_OPTS --disable-docs --enable-bindings=none"
1587         # Disable term-info, linkage of which comes in multiple forms,
1588         # making our snapshots incompatible (#9334)
1589         LLVM_OPTS="$LLVM_OPTS --disable-terminfo"
1590         # Try to have LLVM pull in as few dependencies as possible (#9397)
1591         LLVM_OPTS="$LLVM_OPTS --disable-zlib --disable-libffi"
1592
1593         # Use win32 native thread/lock apis instead of pthread wrapper.
1594         # (llvm's configure tries to find pthread first, so we have to disable it explicitly.)
1595         # Also note that pthreads works badly on mingw-w64 systems: #8996
1596         case "$CFG_BUILD" in
1597             (*-windows-gnu)
1598             LLVM_OPTS="$LLVM_OPTS --disable-pthreads"
1599             ;;
1600         esac
1601
1602         case "$CFG_CC" in
1603             ("ccache clang")
1604             LLVM_CXX_32="ccache clang++ -Qunused-arguments"
1605             LLVM_CC_32="ccache clang -Qunused-arguments"
1606
1607             LLVM_CXX_64="ccache clang++ -Qunused-arguments"
1608             LLVM_CC_64="ccache clang -Qunused-arguments"
1609             ;;
1610             ("clang")
1611             LLVM_CXX_32="clang++ -Qunused-arguments"
1612             LLVM_CC_32="clang -Qunused-arguments"
1613
1614             LLVM_CXX_64="clang++ -Qunused-arguments"
1615             LLVM_CC_64="clang -Qunused-arguments"
1616             ;;
1617             ("ccache gcc")
1618             LLVM_CXX_32="ccache g++"
1619             LLVM_CC_32="ccache gcc"
1620
1621             LLVM_CXX_64="ccache g++"
1622             LLVM_CC_64="ccache gcc"
1623             ;;
1624             ("gcc")
1625             LLVM_CXX_32="g++"
1626             LLVM_CC_32="gcc"
1627
1628             LLVM_CXX_64="g++"
1629             LLVM_CC_64="gcc"
1630             ;;
1631
1632             (*)
1633             msg "inferring LLVM_CXX/CC from CXX/CC = $CXX/$CC"
1634             if [ -n "$CFG_ENABLE_CCACHE" ]
1635             then
1636                 if [ -z "$CFG_CCACHE" ]
1637                 then
1638                     err "ccache requested but not found"
1639                 fi
1640
1641                 LLVM_CXX_32="ccache $CXX"
1642                 LLVM_CC_32="ccache $CC"
1643
1644                 LLVM_CXX_64="ccache $CXX"
1645                 LLVM_CC_64="ccache $CC"
1646             else
1647                 LLVM_CXX_32="$CXX"
1648                 LLVM_CC_32="$CC"
1649
1650                 LLVM_CXX_64="$CXX"
1651                 LLVM_CC_64="$CC"
1652             fi
1653
1654             ;;
1655         esac
1656
1657         case "$CFG_CPUTYPE" in
1658             (x86*)
1659                 LLVM_CXX_32="$LLVM_CXX_32 -m32"
1660                 LLVM_CC_32="$LLVM_CC_32 -m32"
1661
1662                 LLVM_CFLAGS_32="-m32"
1663                 LLVM_CXXFLAGS_32="-m32"
1664                 LLVM_LDFLAGS_32="-m32"
1665
1666                 LLVM_CFLAGS_64=""
1667                 LLVM_CXXFLAGS_64=""
1668                 LLVM_LDFLAGS_64=""
1669
1670                 LLVM_CXX_32="$LLVM_CXX_32 -m32"
1671                 LLVM_CC_32="$LLVM_CC_32 -m32"
1672                 ;;
1673
1674             (*)
1675                 LLVM_CFLAGS_32=""
1676                 LLVM_CXXFLAGS_32=""
1677                 LLVM_LDFLAGS_32=""
1678
1679                 LLVM_CFLAGS_64=""
1680                 LLVM_CXXFLAGS_64=""
1681                 LLVM_LDFLAGS_64=""
1682                 ;;
1683         esac
1684
1685         if echo $t | grep -q x86_64
1686         then
1687             LLVM_CXX=$LLVM_CXX_64
1688             LLVM_CC=$LLVM_CC_64
1689             LLVM_CFLAGS=$LLVM_CFLAGS_64
1690             LLVM_CXXFLAGS=$LLVM_CXXFLAGS_64
1691             LLVM_LDFLAGS=$LLVM_LDFLAGS_64
1692         else
1693             LLVM_CXX=$LLVM_CXX_32
1694             LLVM_CC=$LLVM_CC_32
1695             LLVM_CFLAGS=$LLVM_CFLAGS_32
1696             LLVM_CXXFLAGS=$LLVM_CXXFLAGS_32
1697             LLVM_LDFLAGS=$LLVM_LDFLAGS_32
1698         fi
1699
1700         CXX=$LLVM_CXX
1701         CC=$LLVM_CC
1702         CFLAGS="$CFLAGS $LLVM_CFLAGS"
1703         CXXFLAGS="$CXXFLAGS $LLVM_CXXFLAGS"
1704         LDFLAGS="$LDFLAGS $LLVM_LDFLAGS"
1705
1706         if [ "$CFG_USING_LIBCPP" != "0" ]; then
1707             LLVM_OPTS="$LLVM_OPTS --enable-libcpp"
1708         fi
1709
1710         LLVM_FLAGS="$LLVM_TARGETS $LLVM_OPTS $LLVM_BUILD \
1711                         $LLVM_HOST $LLVM_TARGET --with-python=$CFG_PYTHON"
1712
1713         msg "configuring LLVM with:"
1714         msg "$LLVM_FLAGS"
1715
1716         export CXX
1717         export CC
1718         export CFLAGS
1719         export CXXFLAGS
1720         export LDFLAGS
1721
1722         cd $LLVM_BUILD_DIR
1723         case $CFG_SRC_DIR in
1724             /* | [a-z]:* | [A-Z]:*)
1725                 ${CFG_LLVM_SRC_DIR}configure $LLVM_FLAGS
1726                 ;;
1727             *)
1728                 ${CFG_BUILD_DIR}${CFG_LLVM_SRC_DIR}configure \
1729                     $LLVM_FLAGS
1730                 ;;
1731         esac
1732         need_ok "LLVM configure failed"
1733
1734         cd $CFG_BUILD_DIR
1735     fi
1736
1737     # Construct variables for LLVM build and install directories for
1738     # each target. These will be named
1739     # CFG_LLVM_BUILD_DIR_${target_triple} but all the hyphens in
1740     # target_triple will be converted to underscore, because bash
1741     # variables can't contain hyphens. The makefile will then have to
1742     # convert back.
1743     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1744     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1745     eval ${CFG_LLVM_BUILD_DIR}="'$LLVM_BUILD_DIR'"
1746     eval ${CFG_LLVM_INST_DIR}="'$LLVM_INST_DIR'"
1747 done
1748
1749
1750 step_msg "writing configuration"
1751
1752 putvar CFG_SRC_DIR
1753 putvar CFG_SRC_DIR_RELATIVE
1754 putvar CFG_BUILD_DIR
1755 putvar CFG_OSTYPE
1756 putvar CFG_CPUTYPE
1757 putvar CFG_CONFIGURE_ARGS
1758 putvar CFG_PREFIX
1759 putvar CFG_HOST
1760 putvar CFG_TARGET
1761 putvar CFG_LIBDIR_RELATIVE
1762 putvar CFG_DISABLE_MANAGE_SUBMODULES
1763 putvar CFG_AARCH64_LINUX_ANDROID_NDK
1764 putvar CFG_ARM_LINUX_ANDROIDEABI_NDK
1765 putvar CFG_I686_LINUX_ANDROID_NDK
1766 putvar CFG_NACL_CROSS_PATH
1767 putvar CFG_MANDIR
1768 putvar CFG_USING_LIBCPP
1769
1770 # Avoid spurious warnings from clang by feeding it original source on
1771 # ccache-miss rather than preprocessed input.
1772 if [ -n "$CFG_ENABLE_CCACHE" ] && [ -n "$CFG_USING_CLANG" ]
1773 then
1774     CFG_CCACHE_CPP2=1
1775     putvar CFG_CCACHE_CPP2
1776 fi
1777
1778 if [ -n "$CFG_ENABLE_CCACHE" ]
1779 then
1780     CFG_CCACHE_BASEDIR=${CFG_SRC_DIR}
1781     putvar CFG_CCACHE_BASEDIR
1782 fi
1783
1784
1785 putvar CFG_LLVM_SRC_DIR
1786
1787 for t in $CFG_HOST
1788 do
1789     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1790     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1791     putvar $CFG_LLVM_BUILD_DIR
1792     putvar $CFG_LLVM_INST_DIR
1793 done
1794
1795 if [ -n "$CFG_ENABLE_RUSTBUILD" ]
1796 then
1797     INPUT_MAKEFILE=src/bootstrap/mk/Makefile.in
1798 else
1799     INPUT_MAKEFILE=Makefile.in
1800 fi
1801
1802 msg
1803 copy_if_changed ${CFG_SRC_DIR}${INPUT_MAKEFILE} ./Makefile
1804 move_if_changed config.tmp config.mk
1805 rm -f config.tmp
1806 touch config.stamp
1807
1808 if [ -z "$CFG_ENABLE_DEBUG" ]; then
1809     step_msg "configured in release mode. for development consider --enable-debug"
1810 else
1811     step_msg "complete"
1812 fi
1813
1814 msg "run \`make help\`"
1815 msg