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 opt stage0-landing-pads 1 "enable landing pads during bootstrap with stage0"
 582 # This is used by the automation to produce single-target nightlies
 583 opt dist-host-only 0 "only install bins for the host architecture"
 584 opt inject-std-version 1 "inject the current compiler version of libstd into programs"
 585 opt llvm-version-check 1 "check if the LLVM version is supported, build anyway"
 586
 587 # Optimization and debugging options. These may be overridden by the release channel, etc.
 588 opt_nosave optimize 1 "build optimized rust code"
 589 opt_nosave optimize-cxx 1 "build optimized C++ code"
 590 opt_nosave optimize-llvm 1 "build optimized LLVM"
 591 opt_nosave llvm-assertions 0 "build LLVM with assertions"
 592 opt_nosave debug-assertions 0 "build with debugging assertions"
 593 opt_nosave debuginfo 0 "build with debugger metadata"
 594 opt_nosave debug-jemalloc 0 "build jemalloc with --enable-debug --enable-fill"
 595
 596 valopt localstatedir "/var/lib" "local state directory"
 597 valopt sysconfdir "/etc" "install system configuration files"
 598
 599 valopt datadir "${CFG_PREFIX}/share" "install data"
 600 valopt infodir "${CFG_PREFIX}/share/info" "install additional info"
 601 valopt llvm-root "" "set LLVM root"
 602 valopt python "" "set path to python"
 603 valopt jemalloc-root "" "set directory where libjemalloc_pic.a is located"
 604 valopt build "${DEFAULT_BUILD}" "GNUs ./configure syntax LLVM build triple"
 605 valopt android-cross-path "/opt/ndk_standalone" "Android NDK standalone path (deprecated)"
 606 valopt i686-linux-android-ndk "" "i686-linux-android NDK standalone path"
 607 valopt arm-linux-androideabi-ndk "" "arm-linux-androideabi NDK standalone path"
 608 valopt aarch64-linux-android-ndk "" "aarch64-linux-android NDK standalone path"
 609 valopt release-channel "dev" "the name of the release channel to build"
 610 valopt musl-root "/usr/local" "MUSL root installation directory"
 611
 612 # Used on systems where "cc" and "ar" are unavailable
 613 valopt default-linker "cc" "the default linker"
 614 valopt default-ar     "ar" "the default ar"
 615
 616 # Many of these are saved below during the "writing configuration" step
 617 # (others are conditionally saved).
 618 opt_nosave manage-submodules 1 "let the build manage the git submodules"
 619 opt_nosave clang 0 "prefer clang to gcc for building the runtime"
 620 opt_nosave jemalloc 1 "build liballoc with jemalloc"
 621 opt elf-tls 1 "elf thread local storage on platforms where supported"
 622
 623 valopt_nosave prefix "/usr/local" "set installation prefix"
 624 valopt_nosave local-rust-root "/usr/local" "set prefix for local rust binary"
 625 valopt_nosave host "${CFG_BUILD}" "GNUs ./configure syntax LLVM host triples"
 626 valopt_nosave target "${CFG_HOST}" "GNUs ./configure syntax LLVM target triples"
 627 valopt_nosave mandir "${CFG_PREFIX}/share/man" "install man pages in PATH"
 628
 629 # Temporarily support old triples until buildbots get updated
 630 CFG_BUILD=$(to_llvm_triple $CFG_BUILD)
 631 putvar CFG_BUILD # Yes, this creates a duplicate entry, but the last one wins.
 632 CFG_HOST=$(to_llvm_triple $CFG_HOST)
 633 CFG_TARGET=$(to_llvm_triple $CFG_TARGET)
 634
 635 # On windows we just store the libraries in the bin directory because
 636 # there's no rpath. This is where the build system itself puts libraries;
 637 # --libdir is used to configure the installation directory.
 638 # FIXME: This needs to parameterized over target triples. Do it in platform.mk
 639 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ]
 640 then
 641     CFG_LIBDIR_RELATIVE=bin
 642 else
 643     CFG_LIBDIR_RELATIVE=lib
 644 fi
 645
 646 valopt libdir "${CFG_PREFIX}/${CFG_LIBDIR_RELATIVE}" "install libraries (do not set it on windows platform)"
 647
 648 case "$CFG_LIBDIR" in
 649     "$CFG_PREFIX"/*) CAT_INC=2;;
 650     "$CFG_PREFIX"*)  CAT_INC=1;;
 651     *)
 652         err "libdir must begin with the prefix. Use --prefix to set it accordingly.";;
 653 esac
 654
 655 CFG_LIBDIR_RELATIVE=`echo ${CFG_LIBDIR} | cut -c$((${#CFG_PREFIX}+${CAT_INC}))-`
 656
 657 if ( [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ] ) \
 658         && [ "$CFG_LIBDIR_RELATIVE" != "bin" ]; then
 659     err "libdir on windows should be set to 'bin'"
 660 fi
 661
 662 if [ $HELP -eq 1 ]
 663 then
 664     echo
 665     exit 0
 666 fi
 667
 668 # Validate Options
 669 step_msg "validating $CFG_SELF args"
 670 validate_opt
 671
 672 # Validate the release channel, and configure options
 673 case "$CFG_RELEASE_CHANNEL" in
 674     nightly )
 675         msg "overriding settings for $CFG_RELEASE_CHANNEL"
 676         CFG_ENABLE_LLVM_ASSERTIONS=1
 677         ;;
 678     dev | beta | stable)
 679         ;;
 680     *)
 681         err "release channel must be 'dev', 'nightly', 'beta' or 'stable'"
 682         ;;
 683 esac
 684
 685 # Adjust perf and debug options for debug mode
 686 if [ -n "$CFG_ENABLE_DEBUG" ]; then
 687     msg "debug mode enabled, setting performance options"
 688     if [ -z "$CFG_ENABLE_OPTIMIZE_PROVIDED" ]; then
 689         msg "optimization not explicitly enabled, disabling optimization"
 690         CFG_DISABLE_OPTIMIZE=1
 691         CFG_DISABLE_OPTIMIZE_CXX=1
 692     fi
 693
 694     # Set following variables to 1 unless setting already provided
 695     enable_if_not_disabled debug-assertions
 696     enable_if_not_disabled debug-jemalloc
 697     enable_if_not_disabled debuginfo
 698     enable_if_not_disabled llvm-assertions
 699 fi
 700
 701 # OK, now write the debugging options
 702 if [ -n "$CFG_DISABLE_OPTIMIZE" ]; then putvar CFG_DISABLE_OPTIMIZE; fi
 703 if [ -n "$CFG_DISABLE_OPTIMIZE_CXX" ]; then putvar CFG_DISABLE_OPTIMIZE_CXX; fi
 704 if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then putvar CFG_DISABLE_OPTIMIZE_LLVM; fi
 705 if [ -n "$CFG_ENABLE_LLVM_ASSERTIONS" ]; then putvar CFG_ENABLE_LLVM_ASSERTIONS; fi
 706 if [ -n "$CFG_ENABLE_DEBUG_ASSERTIONS" ]; then putvar CFG_ENABLE_DEBUG_ASSERTIONS; fi
 707 if [ -n "$CFG_ENABLE_DEBUGINFO" ]; then putvar CFG_ENABLE_DEBUGINFO; fi
 708 if [ -n "$CFG_ENABLE_DEBUG_JEMALLOC" ]; then putvar CFG_ENABLE_DEBUG_JEMALLOC; fi
 709
 710 # A magic value that allows the compiler to use unstable features
 711 # during the bootstrap even when doing so would normally be an error
 712 # because of feature staging or because the build turns on
 713 # warnings-as-errors and unstable features default to warnings.  The
 714 # build has to match this key in an env var. Meant to be a mild
 715 # deterrent from users just turning on unstable features on the stable
 716 # channel.
 717 # Basing CFG_BOOTSTRAP_KEY on CFG_BOOTSTRAP_KEY lets it get picked up
 718 # during a Makefile reconfig.
 719 CFG_BOOTSTRAP_KEY="${CFG_BOOTSTRAP_KEY-`date +%H:%M:%S`}"
 720 putvar CFG_BOOTSTRAP_KEY
 721
 722 step_msg "looking for build programs"
 723
 724 probe_need CFG_CURLORWGET  curl wget
 725 if [ -z "$CFG_PYTHON_PROVIDED" ]; then
 726     probe_need CFG_PYTHON      python2.7 python2.6 python2 python
 727 fi
 728
 729 python_version=$($CFG_PYTHON -V 2>&1)
 730 if [ $(echo $python_version | grep -c '^Python 2\.[4567]') -ne 1 ]; then
 731     err "Found $python_version, but LLVM requires Python 2.4-2.7"
 732 fi
 733
 734 # If we have no git directory then we are probably a tarball distribution
 735 # and shouldn't attempt to load submodules
 736 if [ ! -e ${CFG_SRC_DIR}.git ]
 737 then
 738     probe CFG_GIT          git
 739     msg "git: no git directory. disabling submodules"
 740     CFG_DISABLE_MANAGE_SUBMODULES=1
 741 else
 742     probe_need CFG_GIT     git
 743 fi
 744
 745 # Use `md5sum` on GNU platforms, or `md5 -q` on BSD
 746 probe CFG_MD5              md5
 747 probe CFG_MD5SUM           md5sum
 748 if [ -n "$CFG_MD5" ]
 749 then
 750     CFG_HASH_COMMAND="$CFG_MD5 -q | cut -c 1-8"
 751 elif [ -n "$CFG_MD5SUM" ]
 752 then
 753     CFG_HASH_COMMAND="$CFG_MD5SUM | cut -c 1-8"
 754 else
 755     err 'could not find one of: md5 md5sum'
 756 fi
 757 putvar CFG_HASH_COMMAND
 758
 759 probe CFG_CLANG            clang++
 760 probe CFG_CCACHE           ccache
 761 probe CFG_GCC              gcc
 762 probe CFG_LD               ld
 763 probe CFG_VALGRIND         valgrind
 764 probe CFG_PERF             perf
 765 probe CFG_ISCC             iscc
 766 probe CFG_ANTLR4           antlr4
 767 probe CFG_GRUN             grun
 768 probe CFG_FLEX             flex
 769 probe CFG_BISON            bison
 770 probe CFG_GDB              gdb
 771 probe CFG_LLDB             lldb
 772
 773 # On MacOS X, invoking `javac` pops up a dialog if the JDK is not
 774 # installed. Since `javac` is only used if `antlr4` is available,
 775 # probe for it only in this case.
 776 if [ -n "$CFG_ANTLR4" ]
 777 then
 778    probe CFG_JAVAC            javac
 779 fi
 780
 781 # the valgrind rpass tests will fail if you don't have a valgrind, but they're
 782 # only disabled if you opt out.
 783 if [ -z "$CFG_VALGRIND" ]
 784 then
 785     # If the user has explicitly asked for valgrind tests, then fail
 786     if [ -n "$CFG_ENABLE_VALGRIND" ] && [ -n "$CFG_ENABLE_VALGRIND_PROVIDED" ]
 787     then
 788         err "No valgrind present, but valgrind tests explicitly requested"
 789     else
 790         CFG_DISABLE_VALGRIND_RPASS=1
 791         putvar CFG_DISABLE_VALGRIND_RPASS
 792     fi
 793 fi
 794
 795 if [ -n "$CFG_GDB" ]
 796 then
 797     # Store GDB's version
 798     CFG_GDB_VERSION=$($CFG_GDB --version 2>/dev/null | head -1)
 799     putvar CFG_GDB_VERSION
 800 fi
 801
 802 if [ -n "$CFG_LLDB" ]
 803 then
 804     # Store LLDB's version
 805     CFG_LLDB_VERSION=$($CFG_LLDB --version 2>/dev/null | head -1)
 806     putvar CFG_LLDB_VERSION
 807
 808     # If CFG_LLDB_PYTHON_DIR is not already set from the outside and valid, try to read it from
 809     # LLDB via the -P commandline options.
 810     if [ -z "$CFG_LLDB_PYTHON_DIR" ] || [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 811     then
 812         CFG_LLDB_PYTHON_DIR=$($CFG_LLDB -P)
 813
 814         # If CFG_LLDB_PYTHON_DIR is not a valid directory, set it to something more readable
 815         if [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 816         then
 817             CFG_LLDB_PYTHON_DIR="LLDB_PYTHON_DIRECTORY_NOT_FOUND"
 818         fi
 819
 820         putvar CFG_LLDB_PYTHON_DIR
 821     fi
 822 fi
 823
 824 step_msg "looking for target specific programs"
 825
 826 probe CFG_ADB        adb
 827
 828 BIN_SUF=
 829 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ]
 830 then
 831     BIN_SUF=.exe
 832 fi
 833
 834 if [ -n "$CFG_ENABLE_LOCAL_RUST" ]
 835 then
 836     system_rustc=$(which rustc)
 837     if [ -f ${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF} ]
 838     then
 839         : # everything already configured
 840     elif [ -n "$system_rustc" ]
 841     then
 842         # we assume that rustc is in a /bin directory
 843         CFG_LOCAL_RUST_ROOT=${system_rustc%/bin/rustc}
 844     else
 845         err "no local rust to use"
 846     fi
 847
 848     CMD="${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF}"
 849     LRV=`$CMD --version`
 850     if [ $? -ne 0 ]
 851     then
 852         step_msg "failure while running $CMD --version"
 853         exit 1
 854     fi
 855     step_msg "using rustc at: ${CFG_LOCAL_RUST_ROOT} with version: $LRV"
 856     putvar CFG_LOCAL_RUST_ROOT
 857 fi
 858
 859 # Force bitrig to build with clang; gcc doesn't like us there
 860 if [ $CFG_OSTYPE = unknown-bitrig ]
 861 then
 862     step_msg "on Bitrig, forcing use of clang, disabling jemalloc"
 863     CFG_ENABLE_CLANG=1
 864     CFG_DISABLE_JEMALLOC=1
 865 fi
 866
 867 # default gcc version under OpenBSD maybe too old, try using egcc, which is a
 868 # gcc version from ports
 869 if [ $CFG_OSTYPE = unknown-openbsd ]
 870 then
 871     if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
 872         step_msg "older GCC found, try with egcc instead"
 873
 874         # probe again but using egcc
 875         probe CFG_GCC egcc
 876
 877         # and use egcc/eg++ for CC/CXX too if it was found
 878         # (but user setting has priority)
 879         if [ -n "$CFG_GCC" ]; then
 880             CC="${CC:-egcc}"
 881             CXX="${CXX:-eg++}"
 882         fi
 883     fi
 884
 885     step_msg "on OpenBSD, disabling jemalloc"
 886     CFG_DISABLE_JEMALLOC=1
 887 fi
 888
 889 # OS X 10.9, gcc is actually clang. This can cause some confusion in the build
 890 # system, so if we find that gcc is clang, we should just use clang directly.
 891 if [ $CFG_OSTYPE = apple-darwin -a -z "$CFG_ENABLE_CLANG" ]
 892 then
 893     CFG_OSX_GCC_VERSION=$("$CFG_GCC" --version 2>&1 | grep "Apple LLVM version")
 894     if [ $? -eq 0 ]
 895     then
 896         step_msg "on OS X >=10.9, forcing use of clang"
 897         CFG_ENABLE_CLANG=1
 898     else
 899         if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
 900             step_msg "older GCC found, using clang instead"
 901             CFG_ENABLE_CLANG=1
 902         else
 903             # on OS X, with xcode 5 and newer, certain developers may have
 904             # cc, gcc and g++ point to a  mixture of clang and gcc
 905             # if so, this will create very strange build errors
 906             # this last stanza is to detect some such problems and save the future rust
 907             # contributor some time solving that issue.
 908             # this detection could be generalized to other OSes aside from OS X
 909             # but the issue seems most likely to happen on OS X
 910
 911             chk_cc () {
 912                 $1 --version 2> /dev/null | grep -q $2
 913             }
 914             # check that gcc, cc and g++ all point to the same compiler.
 915             # note that for xcode 5, g++ points to clang, not clang++
 916             if !((chk_cc gcc clang  && chk_cc g++ clang) ||
 917                 (chk_cc gcc gcc  &&( chk_cc g++ g++ || chk g++ gcc))); then
 918                 err "the gcc and g++ in your path point to different compilers.
 919     Check which versions are in your path with gcc --version and g++ --version.
 920     To resolve this problem, either fix your PATH  or run configure with --enable-clang"
 921             fi
 922
 923         fi
 924     fi
 925 fi
 926
 927 # If the clang isn't already enabled, check for GCC, and if it is missing, turn
 928 # on clang as a backup.
 929 if [ -z "$CFG_ENABLE_CLANG" ]
 930 then
 931   CFG_GCC_VERSION=$("$CFG_GCC" --version 2>&1)
 932   if [ $? -ne 0 ]
 933   then
 934     step_msg "GCC not installed, will try using Clang"
 935     CFG_ENABLE_CLANG=1
 936   fi
 937 fi
 938
 939 # Okay, at this point, we have made up our minds about whether we are
 940 # going to force CFG_ENABLE_CLANG or not; save the setting if so.
 941 if [ -n "$CFG_ENABLE_CLANG" ]
 942 then
 943     putvar CFG_ENABLE_CLANG
 944 fi
 945
 946 # Same with jemalloc.  save the setting here.
 947 if [ -n "$CFG_DISABLE_JEMALLOC" ]
 948 then
 949     putvar CFG_DISABLE_JEMALLOC
 950 fi
 951
 952 if [ -n "$CFG_LLVM_ROOT" -a -z "$CFG_DISABLE_LLVM_VERSION_CHECK" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
 953 then
 954     step_msg "using custom LLVM at $CFG_LLVM_ROOT"
 955
 956     LLVM_CONFIG="$CFG_LLVM_ROOT/bin/llvm-config"
 957     LLVM_VERSION=$($LLVM_CONFIG --version)
 958
 959     case $LLVM_VERSION in
 960         (3.[5-8]*)
 961             msg "found ok version of LLVM: $LLVM_VERSION"
 962             ;;
 963         (*)
 964             err "bad LLVM version: $LLVM_VERSION, need >=3.5"
 965             ;;
 966     esac
 967 fi
 968
 969 # Even when the user overrides the choice of CC, still try to detect
 970 # clang to disable some clang-specific warnings.  We here draw a
 971 # distinction between:
 972 #
 973 #  CFG_ENABLE_CLANG : passed --enable-clang, or host "requires" clang,
 974 #  CFG_USING_CLANG : compiler (clang / gcc / $CC) looks like clang.
 975 #
 976 # This distinction is important because there are some safeguards we
 977 # would prefer to skip when merely CFG_USING_CLANG is set; but when
 978 # CFG_ENABLE_CLANG is set, that indicates that we are opting into
 979 # running such safeguards.
 980
 981 if [ -n "$CC" ]
 982 then
 983     msg "skipping compiler inference steps; using provided CC=$CC"
 984     CFG_CC="$CC"
 985
 986     CFG_OSX_CC_VERSION=$("$CFG_CC" --version 2>&1 | grep "clang")
 987     if [ $? -eq 0 ]
 988     then
 989         step_msg "note, user-provided CC looks like clang; CC=$CC."
 990         CFG_USING_CLANG=1
 991         putvar CFG_USING_CLANG
 992     fi
 993 else
 994     if [ -n "$CFG_ENABLE_CLANG" ]
 995     then
 996         if [ -z "$CFG_CLANG" ]
 997         then
 998             err "clang requested but not found"
 999         fi
1000         CFG_CC="$CFG_CLANG"
1001         CFG_USING_CLANG=1
1002         putvar CFG_USING_CLANG
1003     else
1004         CFG_CC="gcc"
1005     fi
1006 fi
1007
1008 if [ -n "$CFG_ENABLE_CLANG" ]
1009 then
1010     case "$CC" in
1011         (''|*clang)
1012         CFG_CLANG_REPORTED_VERSION=$($CFG_CC --version | grep version)
1013
1014         if echo $CFG_CLANG_REPORTED_VERSION | grep -q "(based on LLVM "; then
1015             CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*(based on LLVM \(.*\))/\1/')
1016         elif echo $CFG_CLANG_REPORTED_VERSION | grep -q "Apple LLVM"; then
1017             CFG_OSX_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1018         else
1019             CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
1020         fi
1021
1022         if [ -n "$CFG_OSX_CLANG_VERSION" ]
1023         then
1024             case $CFG_OSX_CLANG_VERSION in
1025                 (7.0*)
1026                 step_msg "found ok version of APPLE CLANG: $CFG_OSX_CLANG_VERSION"
1027                 ;;
1028                 (*)
1029                 err "bad APPLE CLANG version: $CFG_OSX_CLANG_VERSION, need >=7.0"
1030                 ;;
1031             esac
1032         else
1033             case $CFG_CLANG_VERSION in
1034                 (3.2* | 3.3* | 3.4* | 3.5* | 3.6* | 3.7* | 3.8*)
1035                 step_msg "found ok version of CLANG: $CFG_CLANG_VERSION"
1036                 ;;
1037                 (*)
1038                 err "bad CLANG version: $CFG_CLANG_VERSION, need >=3.0svn"
1039                 ;;
1040             esac
1041         fi
1042
1043         if [ -z "$CC" ]
1044         then
1045             CFG_CC="clang"
1046             CFG_CXX="clang++"
1047         fi
1048     esac
1049 fi
1050
1051 if [ -n "$CFG_ENABLE_CCACHE" ]
1052 then
1053     if [ -z "$CFG_CCACHE" ]
1054     then
1055         err "ccache requested but not found"
1056     fi
1057
1058     CFG_CC="ccache $CFG_CC"
1059 fi
1060
1061 if [ -z "$CC" -a -z "$CFG_ENABLE_CLANG" -a -z "$CFG_GCC" ]
1062 then
1063     err "either clang or gcc is required"
1064 fi
1065
1066 # All safeguards based on $CFG_ENABLE_CLANG should occur before this
1067 # point in the script; after this point, script logic should inspect
1068 # $CFG_USING_CLANG rather than $CFG_ENABLE_CLANG.
1069
1070 # Set CFG_{CC,CXX,CPP,CFLAGS,CXXFLAGS}
1071 envopt CC
1072 envopt CXX
1073 envopt CPP
1074 envopt CFLAGS
1075 envopt CXXFLAGS
1076
1077 # stdc++ name in use
1078 # used to manage non-standard name (on OpenBSD for example)
1079 program_transform_name=$($CFG_CC -v 2>&1 | sed -n "s/.*--program-transform-name='\([^']*\)'.*/\1/p")
1080 CFG_STDCPP_NAME=$(echo "stdc++" | sed "${program_transform_name}")
1081 putvar CFG_STDCPP_NAME
1082
1083 # a little post-processing of various config values
1084 CFG_PREFIX=${CFG_PREFIX%/}
1085 CFG_MANDIR=${CFG_MANDIR%/}
1086 CFG_HOST="$(echo $CFG_HOST | tr ',' ' ')"
1087 CFG_TARGET="$(echo $CFG_TARGET | tr ',' ' ')"
1088 CFG_SUPPORTED_TARGET=""
1089 for target_file in ${CFG_SRC_DIR}mk/cfg/*.mk; do
1090   CFG_SUPPORTED_TARGET="${CFG_SUPPORTED_TARGET} $(basename "$target_file" .mk)"
1091 done
1092
1093 # copy build-triples to host-triples so that builds are a subset of hosts
1094 V_TEMP=""
1095 for i in $CFG_BUILD $CFG_HOST;
1096 do
1097    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1098 done
1099 CFG_HOST=$V_TEMP
1100
1101 # copy host-triples to target-triples so that hosts are a subset of targets
1102 V_TEMP=""
1103 for i in $CFG_HOST $CFG_TARGET;
1104 do
1105    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1106 done
1107 CFG_TARGET=$V_TEMP
1108
1109 # check target-specific tool-chains
1110 for i in $CFG_TARGET
1111 do
1112     L_CHECK=false
1113     for j in $CFG_SUPPORTED_TARGET
1114     do
1115         if [ $i = $j ]
1116         then
1117             L_CHECK=true
1118         fi
1119     done
1120
1121     if [ $L_CHECK = false ]
1122     then
1123         err "unsupported target triples \"$i\" found"
1124     fi
1125
1126     case $i in
1127         *android*)
1128             upper_snake_target=$(echo "$i" | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
1129             eval ndk=\$"CFG_${upper_snake_target}_NDK"
1130             if [ -z "$ndk" ]
1131             then
1132                 ndk=$CFG_ANDROID_CROSS_PATH
1133                 eval "CFG_${upper_snake_target}_NDK"=$CFG_ANDROID_CROSS_PATH
1134                 warn "generic/default Android NDK option is deprecated (use --$i-ndk option instead)"
1135             fi
1136
1137             # Perform a basic sanity check of the NDK
1138             for android_ndk_tool in "$ndk/bin/$i-gcc" "$ndk/bin/$i-g++" "$ndk/bin/$i-ar"
1139             do
1140                 if [ ! -f $android_ndk_tool ]
1141                 then
1142                     err "NDK tool $android_ndk_tool not found (bad or missing --$i-ndk option?)"
1143                 fi
1144             done
1145             ;;
1146
1147         arm-apple-darwin)
1148             if [ $CFG_OSTYPE != apple-darwin ]
1149             then
1150                 err "The iOS target is only supported on Mac OS X"
1151             fi
1152             ;;
1153
1154
1155         *-musl)
1156             if [ ! -f $CFG_MUSL_ROOT/lib/libc.a ]
1157             then
1158                 err "musl libc $CFG_MUSL_ROOT/lib/libc.a not found"
1159             fi
1160             ;;
1161
1162         *-msvc)
1163             # Currently the build system is not configured to build jemalloc
1164             # with MSVC, so we omit this optional dependency.
1165             step_msg "targeting MSVC, disabling jemalloc"
1166             CFG_DISABLE_JEMALLOC=1
1167             putvar CFG_DISABLE_JEMALLOC
1168
1169             # There are some MSYS python builds which will auto-translate
1170             # windows-style paths to MSYS-style paths in Python itself.
1171             # Unfortunately this breaks LLVM's build system as somewhere along
1172             # the line LLVM prints a path into a file from Python and then CMake
1173             # later tries to interpret that path. If Python prints a MSYS path
1174             # and CMake tries to use it as a Windows path, you're gonna have a
1175             # Bad Time.
1176             #
1177             # Consequently here we try to detect when that happens and print an
1178             # error if it does.
1179             if $CFG_PYTHON -c 'import sys; print sys.argv[1]' `pwd` | grep '^/' > /dev/null
1180             then
1181                 err "
1182
1183 python is silently translating windows paths to MSYS paths \
1184 and the build will fail if this python is used.
1185
1186 Either an official python install must be used or an \
1187 alternative python package in MinGW must be used.
1188
1189 If you are building under msys2 try installing the mingw-w64-x86_64-python2 \
1190 package instead of python2:
1191
1192 $ pacman -R python2 && pacman -S mingw-w64-x86_64-python2
1193 "
1194             fi
1195
1196             # MSVC requires cmake because that's how we're going to build LLVM
1197             probe_need CFG_CMAKE cmake
1198
1199             # There are three builds of cmake on windows: MSVC, MinGW and Cygwin
1200             # The Cygwin build does not have generators for Visual Studio, so
1201             # detect that here and error.
1202             if ! "$CFG_CMAKE" --help | sed -n '/^Generators/,$p' | grep 'Visual Studio' > /dev/null
1203             then
1204                 err "
1205
1206 cmake does not support Visual Studio generators.
1207
1208 This is likely due to it being an msys/cygwin build of cmake, \
1209 rather than the required windows version, built using MinGW \
1210 or Visual Studio.
1211
1212 If you are building under msys2 try installing the mingw-w64-x86_64-cmake \
1213 package instead of cmake:
1214
1215 $ pacman -R cmake && pacman -S mingw-w64-x86_64-cmake
1216 "
1217             fi
1218
1219             # Use the REG program to figure out where VS is installed
1220             # We need to figure out where cl.exe and link.exe are, so we do some
1221             # munging and some probing here. We also look for the default
1222             # INCLUDE and LIB variables for MSVC so we can set those in the
1223             # build system as well.
1224             install=$(cmd //c reg QUERY \
1225                        'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\14.0' \
1226                        -v InstallDir)
1227             if [ -z "$install" ]; then
1228               install=$(cmd //c reg QUERY \
1229                          'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\12.0' \
1230                          -v InstallDir)
1231             fi
1232             need_ok "couldn't find visual studio install root"
1233             CFG_MSVC_ROOT=$(echo "$install" | grep InstallDir | sed 's/.*REG_SZ[ ]*//')
1234             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1235             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1236             putvar CFG_MSVC_ROOT
1237
1238             case $i in
1239                 x86_64-*)
1240                     bits=x86_64
1241                     msvc_part=amd64
1242                     ;;
1243                 i686-*)
1244                     bits=i386
1245                     msvc_part=
1246                     ;;
1247                 *)
1248                     err "can only target x86 targets for MSVC"
1249                     ;;
1250             esac
1251             bindir="${CFG_MSVC_ROOT}/VC/bin"
1252             if [ -n "$msvc_part" ]; then
1253                 bindir="$bindir/$msvc_part"
1254             fi
1255             eval CFG_MSVC_BINDIR_$bits="\"$bindir\""
1256             eval CFG_MSVC_CL_$bits="\"$bindir/cl.exe\""
1257             eval CFG_MSVC_LIB_$bits="\"$bindir/lib.exe\""
1258             eval CFG_MSVC_LINK_$bits="\"$bindir/link.exe\""
1259
1260             vcvarsall="${CFG_MSVC_ROOT}/VC/vcvarsall.bat"
1261             include_path=$(cmd //V:ON //c "$vcvarsall" $msvc_part \& echo !INCLUDE!)
1262             need_ok "failed to learn about MSVC's INCLUDE"
1263             lib_path=$(cmd //V:ON //c "$vcvarsall" $msvc_part \& echo !LIB!)
1264             need_ok "failed to learn about MSVC's LIB"
1265
1266             eval CFG_MSVC_INCLUDE_PATH_${bits}="\"$include_path\""
1267             eval CFG_MSVC_LIB_PATH_${bits}="\"$lib_path\""
1268
1269             putvar CFG_MSVC_BINDIR_${bits}
1270             putvar CFG_MSVC_CL_${bits}
1271             putvar CFG_MSVC_LIB_${bits}
1272             putvar CFG_MSVC_LINK_${bits}
1273             putvar CFG_MSVC_INCLUDE_PATH_${bits}
1274             putvar CFG_MSVC_LIB_PATH_${bits}
1275             ;;
1276
1277         *-rumprun-netbsd)
1278             step_msg "targeting rumprun-netbsd, disabling jemalloc"
1279             CFG_DISABLE_JEMALLOC=1
1280             putvar CFG_DISABLE_JEMALLOC
1281             ;;
1282
1283         *)
1284             ;;
1285     esac
1286 done
1287
1288 if [ -n "$CFG_PERF" ]
1289 then
1290     HAVE_PERF_LOGFD=`$CFG_PERF stat --log-fd 2>&1 | grep 'unknown option'`
1291     if [ -z "$HAVE_PERF_LOGFD" ];
1292     then
1293         CFG_PERF_WITH_LOGFD=1
1294         putvar CFG_PERF_WITH_LOGFD
1295     fi
1296 fi
1297
1298 step_msg "making directories"
1299
1300 for i in \
1301     doc doc/std doc/extra \
1302     dl tmp dist
1303 do
1304     make_dir $i
1305 done
1306
1307 for t in $CFG_HOST
1308 do
1309     make_dir $t/llvm
1310 done
1311
1312 for t in $CFG_HOST
1313 do
1314     make_dir $t/rustllvm
1315 done
1316
1317 for t in $CFG_TARGET
1318 do
1319   make_dir $t/rt
1320   for s in 0 1 2 3
1321   do
1322     make_dir $t/rt/stage$s
1323     make_dir $t/rt/jemalloc
1324     make_dir $t/rt/compiler-rt
1325     for i in                                          \
1326       isaac sync test \
1327       arch/i386 arch/x86_64 arch/arm arch/aarch64 arch/mips arch/powerpc
1328     do
1329       make_dir $t/rt/stage$s/$i
1330     done
1331   done
1332 done
1333
1334 for h in $CFG_HOST
1335 do
1336     for t in $CFG_TARGET
1337     do
1338         # host lib dir stage0
1339         make_dir $h/stage0/lib
1340
1341         # target bin dir stage0
1342         make_dir $h/stage0/lib/rustlib/$t/bin
1343
1344         # target lib dir stage0
1345         make_dir $h/stage0/lib/rustlib/$t/lib
1346
1347         for i in 0 1 2 3
1348         do
1349             # host bin dir
1350             make_dir $h/stage$i/bin
1351
1352             # host lib dir
1353             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE
1354
1355             # host test dir
1356             make_dir $h/stage$i/test
1357
1358             # target bin dir
1359             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/bin
1360
1361             # target lib dir
1362             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/lib
1363         done
1364     done
1365
1366     make_dir $h/test/run-pass
1367     make_dir $h/test/run-pass-valgrind
1368     make_dir $h/test/run-pass-fulldeps
1369     make_dir $h/test/run-fail
1370     make_dir $h/test/run-fail-fulldeps
1371     make_dir $h/test/compile-fail
1372     make_dir $h/test/parse-fail
1373     make_dir $h/test/compile-fail-fulldeps
1374     make_dir $h/test/bench
1375     make_dir $h/test/perf
1376     make_dir $h/test/pretty
1377     make_dir $h/test/debuginfo-gdb
1378     make_dir $h/test/debuginfo-lldb
1379     make_dir $h/test/codegen
1380     make_dir $h/test/rustdoc
1381 done
1382
1383 # Configure submodules
1384 step_msg "configuring submodules"
1385
1386 # Have to be in the top of src directory for this
1387 if [ -z $CFG_DISABLE_MANAGE_SUBMODULES ]
1388 then
1389     cd ${CFG_SRC_DIR}
1390
1391     msg "git: submodule sync"
1392     "${CFG_GIT}" submodule sync
1393
1394     msg "git: submodule init"
1395     "${CFG_GIT}" submodule init
1396
1397     # Disable submodules that we're not using
1398     if [ -n "${CFG_LLVM_ROOT}" ]; then
1399         msg "git: submodule deinit src/llvm"
1400         "${CFG_GIT}" submodule deinit src/llvm
1401     fi
1402     if [ -n "${CFG_JEMALLOC_ROOT}" ]; then
1403         msg "git: submodule deinit src/jemalloc"
1404         "${CFG_GIT}" submodule deinit src/jemalloc
1405     fi
1406
1407     msg "git: submodule update"
1408     "${CFG_GIT}" submodule update
1409     need_ok "git failed"
1410
1411     msg "git: submodule foreach sync"
1412     "${CFG_GIT}" submodule foreach --recursive 'if test -e .gitmodules; then git submodule sync; fi'
1413     need_ok "git failed"
1414
1415     msg "git: submodule foreach update"
1416     "${CFG_GIT}" submodule update --recursive
1417     need_ok "git failed"
1418
1419     # NB: this is just for the sake of getting the submodule SHA1 values
1420     # and status written into the build log.
1421     msg "git: submodule status"
1422     "${CFG_GIT}" submodule status --recursive
1423
1424     msg "git: submodule clobber"
1425     "${CFG_GIT}" submodule foreach --recursive git clean -dxf
1426     need_ok "git failed"
1427     "${CFG_GIT}" submodule foreach --recursive git checkout .
1428     need_ok "git failed"
1429
1430     cd ${CFG_BUILD_DIR}
1431 fi
1432
1433 # Configure llvm, only if necessary
1434 step_msg "looking at LLVM"
1435 CFG_LLVM_SRC_DIR=${CFG_SRC_DIR}src/llvm/
1436 for t in $CFG_HOST
1437 do
1438     do_reconfigure=1
1439     is_msvc=0
1440     case "$t" in
1441         (*-msvc)
1442         is_msvc=1
1443         ;;
1444     esac
1445
1446     if [ -z $CFG_LLVM_ROOT ]
1447     then
1448         LLVM_BUILD_DIR=${CFG_BUILD_DIR}$t/llvm
1449         if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]
1450         then
1451             LLVM_DBG_OPTS="--enable-debug-symbols --disable-optimized"
1452             # Just use LLVM straight from its build directory to
1453             # avoid 'make install' time
1454             LLVM_INST_DIR=$LLVM_BUILD_DIR/Debug
1455         else
1456             LLVM_DBG_OPTS="--enable-optimized"
1457             LLVM_INST_DIR=$LLVM_BUILD_DIR/Release
1458         fi
1459         if [ -z "$CFG_ENABLE_LLVM_ASSERTIONS" ]
1460         then
1461             LLVM_ASSERTION_OPTS="--disable-assertions"
1462         else
1463             LLVM_ASSERTION_OPTS="--enable-assertions"
1464
1465             # Apparently even if we request assertions be enabled for MSVC,
1466             # LLVM's CMake build system ignore this and outputs in `Release`
1467             # anyway.
1468             if [ ${is_msvc} -eq 0 ]; then
1469                 LLVM_INST_DIR=${LLVM_INST_DIR}+Asserts
1470             fi
1471         fi
1472     else
1473         msg "not reconfiguring LLVM, external LLVM root"
1474         # The user is using their own LLVM
1475         LLVM_BUILD_DIR=
1476         LLVM_INST_DIR=$CFG_LLVM_ROOT
1477         do_reconfigure=0
1478         # Check that LLVm FileCheck is available. Needed for the tests
1479         need_cmd $LLVM_INST_DIR/bin/FileCheck
1480     fi
1481
1482     if [ ${do_reconfigure} -ne 0 ]
1483     then
1484     # because git is hilarious, it might have put the module index
1485     # in a couple places.
1486         index1="${CFG_SRC_DIR}.git/modules/src/llvm/index"
1487         index2="${CFG_SRC_DIR}src/llvm/.git/index"
1488         for index in ${index1} ${index2}
1489         do
1490             config_status="${LLVM_BUILD_DIR}/config.status"
1491             if test -e ${index} -a \
1492                     -e ${config_status} -a \
1493                     ${config_status} -nt ${index}
1494             then
1495                 msg "not reconfiguring LLVM, config.status is fresh"
1496                 do_reconfigure=0
1497             fi
1498         done
1499     fi
1500
1501     if [ ${do_reconfigure} -ne 0 ] && [ ${is_msvc} -ne 0 ]
1502     then
1503         msg "configuring LLVM for $t with cmake"
1504
1505         CMAKE_ARGS="-DLLVM_INCLUDE_TESTS=OFF"
1506         if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then
1507             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Debug"
1508         else
1509             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Release"
1510         fi
1511         if [ -z "$CFG_ENABLE_LLVM_ASSERTIONS" ]
1512         then
1513             CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=OFF"
1514         else
1515             CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=ON"
1516         fi
1517
1518         msg "configuring LLVM with:"
1519         msg "$CMAKE_ARGS"
1520         case "$CFG_MSVC_ROOT" in
1521             *14.0*)
1522                 generator="Visual Studio 14 2015"
1523                 ;;
1524             *12.0*)
1525                 generator="Visual Studio 12 2013"
1526                 ;;
1527             *)
1528                 err "can't determine generator for LLVM cmake"
1529                 ;;
1530         esac
1531         case "$t" in
1532             x86_64-*)
1533                 generator="$generator Win64"
1534                 ;;
1535             i686-*)
1536                 ;;
1537             *)
1538                 err "can only build LLVM for x86 platforms"
1539                 ;;
1540         esac
1541         (cd $LLVM_BUILD_DIR && "$CFG_CMAKE" $CFG_LLVM_SRC_DIR \
1542                                             -G "$generator" \
1543                                             $CMAKE_ARGS)
1544         need_ok "LLVM cmake configure failed"
1545     fi
1546
1547     if [ ${do_reconfigure} -ne 0 ] && [ ${is_msvc} -eq 0 ]
1548     then
1549         # LLVM's configure doesn't recognize the new Windows triples yet
1550         gnu_t=$(to_gnu_triple $t)
1551
1552         msg "configuring LLVM for $gnu_t"
1553
1554         LLVM_TARGETS="--enable-targets=x86,x86_64,arm,aarch64,mips,powerpc"
1555         LLVM_BUILD="--build=$gnu_t"
1556         LLVM_HOST="--host=$gnu_t"
1557         LLVM_TARGET="--target=$gnu_t"
1558
1559         # Disable unused LLVM features
1560         LLVM_OPTS="$LLVM_DBG_OPTS $LLVM_ASSERTION_OPTS --disable-docs --enable-bindings=none"
1561         # Disable term-info, linkage of which comes in multiple forms,
1562         # making our snapshots incompatible (#9334)
1563         LLVM_OPTS="$LLVM_OPTS --disable-terminfo"
1564         # Try to have LLVM pull in as few dependencies as possible (#9397)
1565         LLVM_OPTS="$LLVM_OPTS --disable-zlib --disable-libffi"
1566
1567         # Use win32 native thread/lock apis instead of pthread wrapper.
1568         # (llvm's configure tries to find pthread first, so we have to disable it explicitly.)
1569         # Also note that pthreads works badly on mingw-w64 systems: #8996
1570         case "$CFG_BUILD" in
1571             (*-windows-gnu)
1572             LLVM_OPTS="$LLVM_OPTS --disable-pthreads"
1573             ;;
1574         esac
1575
1576         case "$CFG_CC" in
1577             ("ccache clang")
1578             LLVM_CXX_32="ccache clang++ -Qunused-arguments"
1579             LLVM_CC_32="ccache clang -Qunused-arguments"
1580
1581             LLVM_CXX_64="ccache clang++ -Qunused-arguments"
1582             LLVM_CC_64="ccache clang -Qunused-arguments"
1583             ;;
1584             ("clang")
1585             LLVM_CXX_32="clang++ -Qunused-arguments"
1586             LLVM_CC_32="clang -Qunused-arguments"
1587
1588             LLVM_CXX_64="clang++ -Qunused-arguments"
1589             LLVM_CC_64="clang -Qunused-arguments"
1590             ;;
1591             ("ccache gcc")
1592             LLVM_CXX_32="ccache g++"
1593             LLVM_CC_32="ccache gcc"
1594
1595             LLVM_CXX_64="ccache g++"
1596             LLVM_CC_64="ccache gcc"
1597             ;;
1598             ("gcc")
1599             LLVM_CXX_32="g++"
1600             LLVM_CC_32="gcc"
1601
1602             LLVM_CXX_64="g++"
1603             LLVM_CC_64="gcc"
1604             ;;
1605
1606             (*)
1607             msg "inferring LLVM_CXX/CC from CXX/CC = $CXX/$CC"
1608             if [ -n "$CFG_ENABLE_CCACHE" ]
1609             then
1610                 if [ -z "$CFG_CCACHE" ]
1611                 then
1612                     err "ccache requested but not found"
1613                 fi
1614
1615                 LLVM_CXX_32="ccache $CXX"
1616                 LLVM_CC_32="ccache $CC"
1617
1618                 LLVM_CXX_64="ccache $CXX"
1619                 LLVM_CC_64="ccache $CC"
1620             else
1621                 LLVM_CXX_32="$CXX"
1622                 LLVM_CC_32="$CC"
1623
1624                 LLVM_CXX_64="$CXX"
1625                 LLVM_CC_64="$CC"
1626             fi
1627
1628             ;;
1629         esac
1630
1631         case "$CFG_CPUTYPE" in
1632             (x86*)
1633                 LLVM_CXX_32="$LLVM_CXX_32 -m32"
1634                 LLVM_CC_32="$LLVM_CC_32 -m32"
1635
1636                 LLVM_CFLAGS_32="-m32"
1637                 LLVM_CXXFLAGS_32="-m32"
1638                 LLVM_LDFLAGS_32="-m32"
1639
1640                 LLVM_CFLAGS_64=""
1641                 LLVM_CXXFLAGS_64=""
1642                 LLVM_LDFLAGS_64=""
1643
1644                 LLVM_CXX_32="$LLVM_CXX_32 -m32"
1645                 LLVM_CC_32="$LLVM_CC_32 -m32"
1646                 ;;
1647
1648             (*)
1649                 LLVM_CFLAGS_32=""
1650                 LLVM_CXXFLAGS_32=""
1651                 LLVM_LDFLAGS_32=""
1652
1653                 LLVM_CFLAGS_64=""
1654                 LLVM_CXXFLAGS_64=""
1655                 LLVM_LDFLAGS_64=""
1656                 ;;
1657         esac
1658
1659         if echo $t | grep -q x86_64
1660         then
1661             LLVM_CXX=$LLVM_CXX_64
1662             LLVM_CC=$LLVM_CC_64
1663             LLVM_CFLAGS=$LLVM_CFLAGS_64
1664             LLVM_CXXFLAGS=$LLVM_CXXFLAGS_64
1665             LLVM_LDFLAGS=$LLVM_LDFLAGS_64
1666         else
1667             LLVM_CXX=$LLVM_CXX_32
1668             LLVM_CC=$LLVM_CC_32
1669             LLVM_CFLAGS=$LLVM_CFLAGS_32
1670             LLVM_CXXFLAGS=$LLVM_CXXFLAGS_32
1671             LLVM_LDFLAGS=$LLVM_LDFLAGS_32
1672         fi
1673
1674         CXX=$LLVM_CXX
1675         CC=$LLVM_CC
1676         CFLAGS=$LLVM_CFLAGS
1677         CXXFLAGS=$LLVM_CXXFLAGS
1678         LDFLAGS=$LLVM_LDFLAGS
1679
1680         if [ -z "$CFG_DISABLE_LIBCPP" ] && [ -n "$CFG_USING_CLANG" ]; then
1681             LLVM_OPTS="$LLVM_OPTS --enable-libcpp"
1682         fi
1683
1684         LLVM_FLAGS="$LLVM_TARGETS $LLVM_OPTS $LLVM_BUILD \
1685                         $LLVM_HOST $LLVM_TARGET --with-python=$CFG_PYTHON"
1686
1687         msg "configuring LLVM with:"
1688         msg "$LLVM_FLAGS"
1689
1690         export CXX
1691         export CC
1692         export CFLAGS
1693         export CXXFLAGS
1694         export LDFLAGS
1695
1696         cd $LLVM_BUILD_DIR
1697         case $CFG_SRC_DIR in
1698             /* | [a-z]:* | [A-Z]:*)
1699                 ${CFG_LLVM_SRC_DIR}configure $LLVM_FLAGS
1700                 ;;
1701             *)
1702                 ${CFG_BUILD_DIR}${CFG_LLVM_SRC_DIR}configure \
1703                     $LLVM_FLAGS
1704                 ;;
1705         esac
1706         need_ok "LLVM configure failed"
1707
1708         cd $CFG_BUILD_DIR
1709     fi
1710
1711     # Construct variables for LLVM build and install directories for
1712     # each target. These will be named
1713     # CFG_LLVM_BUILD_DIR_${target_triple} but all the hyphens in
1714     # target_triple will be converted to underscore, because bash
1715     # variables can't contain hyphens. The makefile will then have to
1716     # convert back.
1717     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1718     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1719     eval ${CFG_LLVM_BUILD_DIR}="'$LLVM_BUILD_DIR'"
1720     eval ${CFG_LLVM_INST_DIR}="'$LLVM_INST_DIR'"
1721 done
1722
1723
1724 step_msg "writing configuration"
1725
1726 putvar CFG_SRC_DIR
1727 putvar CFG_SRC_DIR_RELATIVE
1728 putvar CFG_BUILD_DIR
1729 putvar CFG_OSTYPE
1730 putvar CFG_CPUTYPE
1731 putvar CFG_CONFIGURE_ARGS
1732 putvar CFG_PREFIX
1733 putvar CFG_HOST
1734 putvar CFG_TARGET
1735 putvar CFG_LIBDIR_RELATIVE
1736 putvar CFG_DISABLE_MANAGE_SUBMODULES
1737 putvar CFG_AARCH64_LINUX_ANDROID_NDK
1738 putvar CFG_ARM_LINUX_ANDROIDEABI_NDK
1739 putvar CFG_I686_LINUX_ANDROID_NDK
1740 putvar CFG_MANDIR
1741
1742 # Avoid spurious warnings from clang by feeding it original source on
1743 # ccache-miss rather than preprocessed input.
1744 if [ -n "$CFG_ENABLE_CCACHE" ] && [ -n "$CFG_USING_CLANG" ]
1745 then
1746     CFG_CCACHE_CPP2=1
1747     putvar CFG_CCACHE_CPP2
1748 fi
1749
1750 if [ -n "$CFG_ENABLE_CCACHE" ]
1751 then
1752     CFG_CCACHE_BASEDIR=${CFG_SRC_DIR}
1753     putvar CFG_CCACHE_BASEDIR
1754 fi
1755
1756
1757 putvar CFG_LLVM_SRC_DIR
1758
1759 for t in $CFG_HOST
1760 do
1761     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1762     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1763     putvar $CFG_LLVM_BUILD_DIR
1764     putvar $CFG_LLVM_INST_DIR
1765 done
1766
1767 msg
1768 copy_if_changed ${CFG_SRC_DIR}Makefile.in ./Makefile
1769 move_if_changed config.tmp config.mk
1770 rm -f config.tmp
1771 touch config.stamp
1772
1773 if [ -z "$CFG_ENABLE_DEBUG" ]; then
1774     step_msg "configured in release mode. for development consider --enable-debug"
1775 else
1776     step_msg "complete"
1777 fi
1778
1779 msg "run \`make help\`"
1780 msg