configure

   1 #!/bin/sh
   2
   3 # /bin/sh on Solaris is not a POSIX compatible shell, but /usr/bin/bash is.
   4 if [ `uname -s` = 'SunOS' -a "${POSIX_SHELL}" != "true" ]; then
   5     POSIX_SHELL="true"
   6     export POSIX_SHELL
   7     exec /usr/bin/env bash $0 "$@"
   8 fi
   9 unset POSIX_SHELL # clear it so if we invoke other scripts, they run as bash as well
  10
  11 msg() {
  12     echo "configure: $*"
  13 }
  14
  15 step_msg() {
  16     msg
  17     msg "$1"
  18     msg
  19 }
  20
  21 warn() {
  22     echo "configure: WARNING: $1"
  23 }
  24
  25 err() {
  26     echo "configure: error: $1"
  27     exit 1
  28 }
  29
  30 run() {
  31     msg "$@"
  32     "$@"
  33 }
  34
  35 need_ok() {
  36     if [ $? -ne 0 ]
  37     then
  38         err "$1"
  39     fi
  40 }
  41
  42 need_cmd() {
  43     if command -v $1 >/dev/null 2>&1
  44     then msg "found program '$1'"
  45     else err "program '$1' is missing, please install it"
  46     fi
  47 }
  48
  49 make_dir() {
  50     if [ ! -d $1 ]
  51     then
  52         run mkdir -p $1
  53     fi
  54 }
  55
  56 copy_if_changed() {
  57     if cmp -s $1 $2
  58     then
  59         msg "leaving $2 unchanged"
  60     else
  61         run cp -f $1 $2
  62         chmod u-w $2 # make copied artifact read-only
  63     fi
  64 }
  65
  66 move_if_changed() {
  67     if cmp -s $1 $2
  68     then
  69         msg "leaving $2 unchanged"
  70     else
  71         run mv -f $1 $2
  72         chmod u-w $2 # make moved artifact read-only
  73     fi
  74 }
  75
  76 putvar() {
  77     local T
  78     eval T=\$$1
  79     eval TLEN=\${#$1}
  80     if [ $TLEN -gt 35 ]
  81     then
  82         printf "configure: %-20s := %.35s ...\n" $1 "$T"
  83     else
  84         printf "configure: %-20s := %s %s\n" $1 "$T" "$2"
  85     fi
  86     printf "%-20s := %s\n" $1 "$T" >>config.tmp
  87 }
  88
  89 putpathvar() {
  90     local T
  91     eval T=\$$1
  92     eval TLEN=\${#$1}
  93     if [ $TLEN -gt 35 ]
  94     then
  95         printf "configure: %-20s := %.35s ...\n" $1 "$T"
  96     else
  97         printf "configure: %-20s := %s %s\n" $1 "$T" "$2"
  98     fi
  99     if [ -z "$T" ]
 100     then
 101         printf "%-20s := \n" $1 >>config.tmp
 102     else
 103         printf "%-20s := \"%s\"\n" $1 "$T" >>config.tmp
 104     fi
 105 }
 106
 107 probe() {
 108     local V=$1
 109     shift
 110     local P
 111     local T
 112     for P
 113     do
 114         T=$(command -v $P 2>&1)
 115         if [ $? -eq 0 ]
 116         then
 117             VER0=$($P --version 2>/dev/null \
 118                 |  grep -o '[vV]\?[0-9][0-9.][a-z0-9.-]*' | head -1 )
 119             if [ $? -eq 0 -a "x${VER0}" != "x" ]
 120             then
 121               VER="($VER0)"
 122             else
 123               VER=""
 124             fi
 125             break
 126         else
 127             VER=""
 128             T=""
 129         fi
 130     done
 131     eval $V=\$T
 132     putpathvar $V "$VER"
 133 }
 134
 135 probe_need() {
 136     probe $*
 137     local V=$1
 138     shift
 139     eval VV=\$$V
 140     if [ -z "$VV" ]
 141     then
 142         err "$V needed, but unable to find any of: $*"
 143     fi
 144 }
 145
 146 validate_opt () {
 147     for arg in $CFG_CONFIGURE_ARGS
 148     do
 149         isArgValid=0
 150         for option in $BOOL_OPTIONS
 151         do
 152             if test --disable-$option = $arg
 153             then
 154                 isArgValid=1
 155             fi
 156             if test --enable-$option = $arg
 157             then
 158                 isArgValid=1
 159             fi
 160         done
 161         for option in $VAL_OPTIONS
 162         do
 163             if echo "$arg" | grep -q -- "--$option="
 164             then
 165                 isArgValid=1
 166             fi
 167         done
 168         if [ "$arg" = "--help" ]
 169         then
 170             echo
 171             echo "No more help available for Configure options,"
 172             echo "check the Wiki or join our IRC channel"
 173             break
 174         else
 175             if test $isArgValid -eq 0
 176             then
 177                 err "Option '$arg' is not recognized"
 178             fi
 179         fi
 180     done
 181 }
 182
 183 # `valopt OPTION_NAME DEFAULT DOC` extracts a string-valued option
 184 # from command line, using provided default value for the option if
 185 # not present, and saves it to the generated config.mk.
 186 #
 187 # `valopt_nosave` is much the same, except that it does not save the
 188 # result to config.mk (instead the script should use `putvar` itself
 189 # later on to save it).  `valopt_core` is the core upon which the
 190 # other two are built.
 191
 192 valopt_core() {
 193     VAL_OPTIONS="$VAL_OPTIONS $2"
 194
 195     local SAVE=$1
 196     local OP=$2
 197     local DEFAULT=$3
 198     shift
 199     shift
 200     shift
 201     local DOC="$*"
 202     if [ $HELP -eq 0 ]
 203     then
 204         local UOP=$(echo $OP | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
 205         local V="CFG_${UOP}"
 206         local V_PROVIDED="${V}_PROVIDED"
 207         eval $V="$DEFAULT"
 208         for arg in $CFG_CONFIGURE_ARGS
 209         do
 210             if echo "$arg" | grep -q -- "--$OP="
 211             then
 212                 val=$(echo "$arg" | cut -f2 -d=)
 213                 eval $V=$val
 214                 eval $V_PROVIDED=1
 215             fi
 216         done
 217         if [ "$SAVE" = "save" ]
 218         then
 219             putvar $V
 220         fi
 221     else
 222         if [ -z "$DEFAULT" ]
 223         then
 224             DEFAULT="<none>"
 225         fi
 226         OP="${OP}=[${DEFAULT}]"
 227         printf "    --%-30s %s\n" "$OP" "$DOC"
 228     fi
 229 }
 230
 231 valopt_nosave() {
 232     valopt_core nosave "$@"
 233 }
 234
 235 valopt() {
 236     valopt_core save "$@"
 237 }
 238
 239 # `opt OPTION_NAME DEFAULT DOC` extracts a boolean-valued option from
 240 # command line, using the provided default value (0/1) for the option
 241 # if not present, and saves it to the generated config.mk.
 242 #
 243 # `opt_nosave` is much the same, except that it does not save the
 244 # result to config.mk (instead the script should use `putvar` itself
 245 # later on to save it).  `opt_core` is the core upon which the other
 246 # two are built.
 247
 248 opt_core() {
 249     BOOL_OPTIONS="$BOOL_OPTIONS $2"
 250
 251     local SAVE=$1
 252     local OP=$2
 253     local DEFAULT=$3
 254     shift
 255     shift
 256     shift
 257     local DOC="$*"
 258     local FLAG=""
 259
 260     if [ $DEFAULT -eq 0 ]
 261     then
 262         FLAG="enable"
 263         DEFAULT_FLAG="disable"
 264     else
 265         FLAG="disable"
 266         DEFAULT_FLAG="enable"
 267         DOC="don't $DOC"
 268     fi
 269
 270     if [ $HELP -eq 0 ]
 271     then
 272         for arg in $CFG_CONFIGURE_ARGS
 273         do
 274             if [ "$arg" = "--${FLAG}-${OP}" ]
 275             then
 276                 OP=$(echo $OP | tr 'a-z-' 'A-Z_')
 277                 FLAG=$(echo $FLAG | tr 'a-z' 'A-Z')
 278                 local V="CFG_${FLAG}_${OP}"
 279                 local V_PROVIDED="CFG_${FLAG}_${OP}_PROVIDED"
 280                 eval $V=1
 281                 eval $V_PROVIDED=1
 282                 if [ "$SAVE" = "save" ]
 283                 then
 284                    putvar $V
 285                 fi
 286             elif [ "$arg" = "--${DEFAULT_FLAG}-${OP}" ]
 287             then
 288                 OP=$(echo $OP | tr 'a-z-' 'A-Z_')
 289                 DEFAULT_FLAG=$(echo $DEFAULT_FLAG | tr 'a-z' 'A-Z')
 290                 local V_PROVIDED="CFG_${DEFAULT_FLAG}_${OP}_PROVIDED"
 291                 eval $V_PROVIDED=1
 292             fi
 293         done
 294     else
 295         if [ -n "$META" ]
 296         then
 297             OP="$OP=<$META>"
 298         fi
 299         printf "    --%-30s %s\n" "$FLAG-$OP" "$DOC"
 300      fi
 301 }
 302
 303 opt_nosave() {
 304     opt_core nosave "$@"
 305 }
 306
 307 opt() {
 308     opt_core save "$@"
 309 }
 310
 311 envopt() {
 312     local NAME=$1
 313     local V="CFG_${NAME}"
 314     eval VV=\$$V
 315
 316     # If configure didn't set a value already, then check environment.
 317     #
 318     # (It is recommended that the configure script always check the
 319     # environment before setting any values to envopt variables; see
 320     # e.g.  how CFG_CC is handled, where it first checks `-z "$CC"`,
 321     # and issues msg if it ends up employing that provided value.)
 322     if [ -z "$VV" ]
 323     then
 324         eval $V=\$$NAME
 325         eval VV=\$$V
 326     fi
 327
 328     # If script or environment provided a value, save it.
 329     if [ -n "$VV" ]
 330     then
 331         putvar $V
 332     fi
 333 }
 334
 335 enable_if_not_disabled() {
 336     local OP=$1
 337     local UOP=$(echo $OP | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
 338     local ENAB_V="CFG_ENABLE_$UOP"
 339     local EXPLICITLY_DISABLED="CFG_DISABLE_${UOP}_PROVIDED"
 340     eval VV=\$$EXPLICITLY_DISABLED
 341     if [ -z "$VV" ]; then
 342         eval $ENAB_V=1
 343     fi
 344 }
 345
 346 to_gnu_triple() {
 347     case $1 in
 348         i686-pc-windows-gnu) echo i686-w64-mingw32 ;;
 349         x86_64-pc-windows-gnu) echo x86_64-w64-mingw32 ;;
 350         *) echo $1 ;;
 351     esac
 352 }
 353
 354 # Prints the absolute path of a directory to stdout
 355 abs_path() {
 356     local _path="$1"
 357     # Unset CDPATH because it causes havok: it makes the destination unpredictable
 358     # and triggers 'cd' to print the path to stdout. Route `cd`'s output to /dev/null
 359     # for good measure.
 360     (unset CDPATH && cd "$_path" > /dev/null && pwd)
 361 }
 362
 363 msg "looking for configure programs"
 364 need_cmd cmp
 365 need_cmd mkdir
 366 need_cmd printf
 367 need_cmd cut
 368 need_cmd head
 369 need_cmd grep
 370 need_cmd xargs
 371 need_cmd cp
 372 need_cmd find
 373 need_cmd uname
 374 need_cmd date
 375 need_cmd tr
 376 need_cmd sed
 377 need_cmd file
 378 need_cmd make
 379
 380 msg "inspecting environment"
 381
 382 CFG_OSTYPE=$(uname -s)
 383 CFG_CPUTYPE=$(uname -m)
 384
 385 if [ $CFG_OSTYPE = Darwin -a $CFG_CPUTYPE = i386 ]
 386 then
 387     # Darwin's `uname -s` lies and always returns i386. We have to use sysctl
 388     # instead.
 389     if sysctl hw.optional.x86_64 | grep -q ': 1'
 390     then
 391         CFG_CPUTYPE=x86_64
 392     fi
 393 fi
 394
 395 # The goal here is to come up with the same triple as LLVM would,
 396 # at least for the subset of platforms we're willing to target.
 397
 398 case $CFG_OSTYPE in
 399
 400     Linux)
 401         CFG_OSTYPE=unknown-linux-gnu
 402         ;;
 403
 404     FreeBSD)
 405         CFG_OSTYPE=unknown-freebsd
 406         ;;
 407
 408     DragonFly)
 409         CFG_OSTYPE=unknown-dragonfly
 410         ;;
 411
 412     Bitrig)
 413         CFG_OSTYPE=unknown-bitrig
 414         ;;
 415
 416     OpenBSD)
 417         CFG_OSTYPE=unknown-openbsd
 418        ;;
 419
 420     NetBSD)
 421             CFG_OSTYPE=unknown-netbsd
 422             ;;
 423
 424     Darwin)
 425         CFG_OSTYPE=apple-darwin
 426         ;;
 427
 428     SunOS)
 429         CFG_OSTYPE=sun-solaris
 430         CFG_CPUTYPE=$(isainfo -n)
 431         ;;
 432
 433     MINGW*)
 434         # msys' `uname` does not print gcc configuration, but prints msys
 435         # configuration. so we cannot believe `uname -m`:
 436         # msys1 is always i686 and msys2 is always x86_64.
 437         # instead, msys defines $MSYSTEM which is MINGW32 on i686 and
 438         # MINGW64 on x86_64.
 439         CFG_CPUTYPE=i686
 440         CFG_OSTYPE=pc-windows-gnu
 441         if [ "$MSYSTEM" = MINGW64 ]
 442         then
 443             CFG_CPUTYPE=x86_64
 444         fi
 445         ;;
 446
 447     MSYS*)
 448         CFG_OSTYPE=pc-windows-gnu
 449         ;;
 450
 451 # Thad's Cygwin identifiers below
 452
 453 #   Vista 32 bit
 454     CYGWIN_NT-6.0)
 455         CFG_OSTYPE=pc-windows-gnu
 456         CFG_CPUTYPE=i686
 457         ;;
 458
 459 #   Vista 64 bit
 460     CYGWIN_NT-6.0-WOW64)
 461         CFG_OSTYPE=pc-windows-gnu
 462         CFG_CPUTYPE=x86_64
 463         ;;
 464
 465 #   Win 7 32 bit
 466     CYGWIN_NT-6.1)
 467         CFG_OSTYPE=pc-windows-gnu
 468         CFG_CPUTYPE=i686
 469         ;;
 470
 471 #   Win 7 64 bit
 472     CYGWIN_NT-6.1-WOW64)
 473         CFG_OSTYPE=pc-windows-gnu
 474         CFG_CPUTYPE=x86_64
 475         ;;
 476
 477 #   Win 8 # uname -s on 64-bit cygwin does not contain WOW64, so simply use uname -m to detect arch (works in my install)
 478     CYGWIN_NT-6.3)
 479         CFG_OSTYPE=pc-windows-gnu
 480         ;;
 481 # We do not detect other OS such as XP/2003 using 64 bit using uname.
 482 # 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.
 483     *)
 484         err "unknown OS type: $CFG_OSTYPE"
 485         ;;
 486 esac
 487
 488
 489 case $CFG_CPUTYPE in
 490
 491     i386 | i486 | i686 | i786 | x86)
 492         CFG_CPUTYPE=i686
 493         ;;
 494
 495     xscale | arm)
 496         CFG_CPUTYPE=arm
 497         ;;
 498
 499     armv7l)
 500         CFG_CPUTYPE=arm
 501         CFG_OSTYPE="${CFG_OSTYPE}eabihf"
 502         ;;
 503
 504     aarch64)
 505         CFG_CPUTYPE=aarch64
 506         ;;
 507
 508     powerpc | ppc)
 509         CFG_CPUTYPE=powerpc
 510         ;;
 511
 512     powerpc64 | ppc64)
 513         CFG_CPUTYPE=powerpc64
 514         ;;
 515
 516     powerpc64le | ppc64le)
 517         CFG_CPUTYPE=powerpc64le
 518         ;;
 519
 520     x86_64 | x86-64 | x64 | amd64)
 521         CFG_CPUTYPE=x86_64
 522         ;;
 523
 524     *)
 525         err "unknown CPU type: $CFG_CPUTYPE"
 526 esac
 527
 528 # Detect 64 bit linux systems with 32 bit userland and force 32 bit compilation
 529 if [ $CFG_OSTYPE = unknown-linux-gnu -a $CFG_CPUTYPE = x86_64 ]
 530 then
 531     # $SHELL does not exist in standard 'sh', so probably only exists
 532     # if configure is running in an interactive bash shell. /usr/bin/env
 533     # exists *everywhere*.
 534     BIN_TO_PROBE="$SHELL"
 535     if [ ! -r "$BIN_TO_PROBE" ]; then
 536         if [ -r "/usr/bin/env" ]; then
 537             BIN_TO_PROBE="/usr/bin/env"
 538         else
 539             warn "Cannot check if the userland is i686 or x86_64"
 540         fi
 541     fi
 542     file -L "$BIN_TO_PROBE" | grep -q "x86[_-]64"
 543     if [ $? != 0 ]; then
 544         msg "i686 userland on x86_64 Linux kernel"
 545         CFG_CPUTYPE=i686
 546     fi
 547 fi
 548
 549
 550 DEFAULT_BUILD="${CFG_CPUTYPE}-${CFG_OSTYPE}"
 551
 552 CFG_SRC_DIR="$(abs_path $(dirname $0))/"
 553 CFG_SRC_DIR_RELATIVE="$(dirname $0)/"
 554 CFG_BUILD_DIR="$(pwd)/"
 555 CFG_SELF="$0"
 556 CFG_CONFIGURE_ARGS="$@"
 557
 558
 559 case "${CFG_SRC_DIR}" in
 560     *\ * )
 561         err "The path to the rust source directory contains spaces, which is not supported"
 562         ;;
 563     *)
 564         ;;
 565 esac
 566
 567
 568 OPTIONS=""
 569 HELP=0
 570 if [ "$1" = "--help" ]
 571 then
 572     HELP=1
 573     shift
 574     echo
 575     echo "Usage: $CFG_SELF [options]"
 576     echo
 577     echo "Options:"
 578     echo
 579 else
 580     msg "recreating config.tmp"
 581     echo '' >config.tmp
 582
 583     step_msg "processing $CFG_SELF args"
 584 fi
 585
 586 BOOL_OPTIONS=""
 587 VAL_OPTIONS=""
 588
 589 opt debug 0 "debug mode; disables optimization unless \`--enable-optimize\` given"
 590 opt valgrind 0 "run tests with valgrind (memcheck by default)"
 591 opt helgrind 0 "run tests with helgrind instead of memcheck"
 592 opt valgrind-rpass 1 "run rpass-valgrind tests with valgrind"
 593 opt docs     1 "build standard library documentation"
 594 opt compiler-docs     0 "build compiler documentation"
 595 opt optimize-tests 1 "build tests with optimizations"
 596 opt debuginfo-tests 0 "build tests with debugger metadata"
 597 opt libcpp 1 "build llvm with libc++ instead of libstdc++ when using clang"
 598 opt llvm-assertions 0 "build LLVM with assertions"
 599 opt debug-assertions 0 "build with debugging assertions"
 600 opt fast-make 0 "use .gitmodules as timestamp for submodule deps"
 601 opt ccache 0 "invoke gcc/clang via ccache to reuse object files between builds"
 602 opt local-rust 0 "use an installed rustc rather than downloading a snapshot"
 603 opt local-rebuild 0 "use an installed rustc matching the current version, for rebuilds"
 604 opt llvm-static-stdcpp 0 "statically link to libstdc++ for LLVM"
 605 opt rpath 1 "build rpaths into rustc itself"
 606 opt stage0-landing-pads 1 "enable landing pads during bootstrap with stage0"
 607 # This is used by the automation to produce single-target nightlies
 608 opt dist-host-only 0 "only install bins for the host architecture"
 609 opt inject-std-version 1 "inject the current compiler version of libstd into programs"
 610 opt llvm-version-check 1 "check if the LLVM version is supported, build anyway"
 611 opt rustbuild 0 "use the rust and cargo based build system"
 612 opt orbit 0 "get MIR where it belongs - everywhere; most importantly, in orbit"
 613 opt codegen-tests 1 "run the src/test/codegen tests"
 614 opt option-checking 1 "complain about unrecognized options in this configure script"
 615
 616 # Optimization and debugging options. These may be overridden by the release channel, etc.
 617 opt_nosave optimize 1 "build optimized rust code"
 618 opt_nosave optimize-cxx 1 "build optimized C++ code"
 619 opt_nosave optimize-llvm 1 "build optimized LLVM"
 620 opt_nosave llvm-assertions 0 "build LLVM with assertions"
 621 opt_nosave debug-assertions 0 "build with debugging assertions"
 622 opt_nosave debuginfo 0 "build with debugger metadata"
 623 opt_nosave debug-jemalloc 0 "build jemalloc with --enable-debug --enable-fill"
 624
 625 valopt localstatedir "/var/lib" "local state directory"
 626 valopt sysconfdir "/etc" "install system configuration files"
 627
 628 valopt datadir "${CFG_PREFIX}/share" "install data"
 629 valopt infodir "${CFG_PREFIX}/share/info" "install additional info"
 630 valopt llvm-root "" "set LLVM root"
 631 valopt python "" "set path to python"
 632 valopt jemalloc-root "" "set directory where libjemalloc_pic.a is located"
 633 valopt build "${DEFAULT_BUILD}" "GNUs ./configure syntax LLVM build triple"
 634 valopt android-cross-path "" "Android NDK standalone path (deprecated)"
 635 valopt i686-linux-android-ndk "" "i686-linux-android NDK standalone path"
 636 valopt arm-linux-androideabi-ndk "" "arm-linux-androideabi NDK standalone path"
 637 valopt armv7-linux-androideabi-ndk "" "armv7-linux-androideabi NDK standalone path"
 638 valopt aarch64-linux-android-ndk "" "aarch64-linux-android NDK standalone path"
 639 valopt nacl-cross-path  "" "NaCl SDK path (Pepper Canary is recommended). Must be absolute!"
 640 valopt release-channel "dev" "the name of the release channel to build"
 641 valopt musl-root "/usr/local" "MUSL root installation directory"
 642 valopt extra-filename "" "Additional data that is hashed and passed to the -C extra-filename flag"
 643
 644 # Used on systems where "cc" and "ar" are unavailable
 645 valopt default-linker "cc" "the default linker"
 646 valopt default-ar     "ar" "the default ar"
 647
 648 # Many of these are saved below during the "writing configuration" step
 649 # (others are conditionally saved).
 650 opt_nosave manage-submodules 1 "let the build manage the git submodules"
 651 opt_nosave clang 0 "prefer clang to gcc for building the runtime"
 652 opt_nosave jemalloc 1 "build liballoc with jemalloc"
 653 opt elf-tls 1 "elf thread local storage on platforms where supported"
 654
 655 valopt_nosave prefix "/usr/local" "set installation prefix"
 656 valopt_nosave local-rust-root "/usr/local" "set prefix for local rust binary"
 657 valopt_nosave host "${CFG_BUILD}" "GNUs ./configure syntax LLVM host triples"
 658 valopt_nosave target "${CFG_HOST}" "GNUs ./configure syntax LLVM target triples"
 659 valopt_nosave mandir "${CFG_PREFIX}/share/man" "install man pages in PATH"
 660
 661 # On Windows this determines root of the subtree for target libraries.
 662 # Host runtime libs always go to 'bin'.
 663 valopt libdir "${CFG_PREFIX}/lib" "install libraries"
 664
 665 case "$CFG_LIBDIR" in
 666     "$CFG_PREFIX"/*) CAT_INC=2;;
 667     "$CFG_PREFIX"*)  CAT_INC=1;;
 668     *)
 669         err "libdir must begin with the prefix. Use --prefix to set it accordingly.";;
 670 esac
 671
 672 CFG_LIBDIR_RELATIVE=`echo ${CFG_LIBDIR} | cut -c$((${#CFG_PREFIX}+${CAT_INC}))-`
 673
 674 if [ $HELP -eq 1 ]
 675 then
 676     echo
 677     exit 0
 678 fi
 679
 680 # Validate Options
 681 if [ -z "$CFG_DISABLE_OPTION_CHECKING" ]
 682 then
 683     step_msg "validating $CFG_SELF args"
 684     validate_opt
 685 fi
 686
 687 # Validate the release channel, and configure options
 688 case "$CFG_RELEASE_CHANNEL" in
 689     nightly )
 690         msg "overriding settings for $CFG_RELEASE_CHANNEL"
 691         CFG_ENABLE_LLVM_ASSERTIONS=1
 692         ;;
 693     dev | beta | stable)
 694         ;;
 695     *)
 696         err "release channel must be 'dev', 'nightly', 'beta' or 'stable'"
 697         ;;
 698 esac
 699
 700 # Adjust perf and debug options for debug mode
 701 if [ -n "$CFG_ENABLE_DEBUG" ]; then
 702     msg "debug mode enabled, setting performance options"
 703     if [ -z "$CFG_ENABLE_OPTIMIZE_PROVIDED" ]; then
 704         msg "optimization not explicitly enabled, disabling optimization"
 705         CFG_DISABLE_OPTIMIZE=1
 706         CFG_DISABLE_OPTIMIZE_CXX=1
 707     fi
 708
 709     # Set following variables to 1 unless setting already provided
 710     enable_if_not_disabled debug-assertions
 711     enable_if_not_disabled debug-jemalloc
 712     enable_if_not_disabled debuginfo
 713     enable_if_not_disabled llvm-assertions
 714 fi
 715
 716 # OK, now write the debugging options
 717 if [ -n "$CFG_DISABLE_OPTIMIZE" ]; then putvar CFG_DISABLE_OPTIMIZE; fi
 718 if [ -n "$CFG_DISABLE_OPTIMIZE_CXX" ]; then putvar CFG_DISABLE_OPTIMIZE_CXX; fi
 719 if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then putvar CFG_DISABLE_OPTIMIZE_LLVM; fi
 720 if [ -n "$CFG_ENABLE_LLVM_ASSERTIONS" ]; then putvar CFG_ENABLE_LLVM_ASSERTIONS; fi
 721 if [ -n "$CFG_ENABLE_DEBUG_ASSERTIONS" ]; then putvar CFG_ENABLE_DEBUG_ASSERTIONS; fi
 722 if [ -n "$CFG_ENABLE_DEBUGINFO" ]; then putvar CFG_ENABLE_DEBUGINFO; fi
 723 if [ -n "$CFG_ENABLE_DEBUG_JEMALLOC" ]; then putvar CFG_ENABLE_DEBUG_JEMALLOC; fi
 724
 725 if [ -n "$CFG_ENABLE_ORBIT" ]; then putvar CFG_ENABLE_ORBIT; fi
 726
 727 step_msg "looking for build programs"
 728
 729 probe_need CFG_CURL curl
 730 if [ -z "$CFG_PYTHON_PROVIDED" ]; then
 731     probe_need CFG_PYTHON      python2.7 python2 python
 732 fi
 733
 734 python_version=$($CFG_PYTHON -V 2>&1)
 735 if [ $(echo $python_version | grep -c '^Python 2\.7') -ne 1 ]; then
 736     err "Found $python_version, but Python 2.7 is required"
 737 fi
 738
 739 # If we have no git directory then we are probably a tarball distribution
 740 # and shouldn't attempt to load submodules
 741 if [ ! -e ${CFG_SRC_DIR}.git ]
 742 then
 743     probe CFG_GIT          git
 744     msg "git: no git directory. disabling submodules"
 745     CFG_DISABLE_MANAGE_SUBMODULES=1
 746 else
 747     probe_need CFG_GIT     git
 748 fi
 749
 750 # Use `md5sum` on GNU platforms, or `md5 -q` on BSD
 751 probe CFG_MD5              md5
 752 probe CFG_MD5SUM           md5sum
 753 if [ -n "$CFG_MD5" ]
 754 then
 755     CFG_HASH_COMMAND="$CFG_MD5 -q | cut -c 1-8"
 756 elif [ -n "$CFG_MD5SUM" ]
 757 then
 758     CFG_HASH_COMMAND="$CFG_MD5SUM | cut -c 1-8"
 759 else
 760     err 'could not find one of: md5 md5sum'
 761 fi
 762 putvar CFG_HASH_COMMAND
 763
 764 probe CFG_CLANG            clang++
 765 probe CFG_CCACHE           ccache
 766 probe CFG_GCC              gcc
 767 probe CFG_LD               ld
 768 probe CFG_VALGRIND         valgrind
 769 probe CFG_PERF             perf
 770 probe CFG_ISCC             iscc
 771 probe CFG_ANTLR4           antlr4
 772 probe CFG_GRUN             grun
 773 probe CFG_FLEX             flex
 774 probe CFG_BISON            bison
 775 probe CFG_GDB              gdb
 776 probe CFG_LLDB             lldb
 777
 778 # For building LLVM
 779 probe_need CFG_CMAKE cmake
 780
 781 # On MacOS X, invoking `javac` pops up a dialog if the JDK is not
 782 # installed. Since `javac` is only used if `antlr4` is available,
 783 # probe for it only in this case.
 784 if [ -n "$CFG_ANTLR4" ]
 785 then
 786    probe CFG_JAVAC            javac
 787 fi
 788
 789 # the valgrind rpass tests will fail if you don't have a valgrind, but they're
 790 # only disabled if you opt out.
 791 if [ -z "$CFG_VALGRIND" ]
 792 then
 793     # If the user has explicitly asked for valgrind tests, then fail
 794     if [ -n "$CFG_ENABLE_VALGRIND" ] && [ -n "$CFG_ENABLE_VALGRIND_PROVIDED" ]
 795     then
 796         err "No valgrind present, but valgrind tests explicitly requested"
 797     else
 798         CFG_DISABLE_VALGRIND_RPASS=1
 799         putvar CFG_DISABLE_VALGRIND_RPASS
 800     fi
 801 fi
 802
 803 if [ -n "$CFG_GDB" ]
 804 then
 805     # Store GDB's version
 806     CFG_GDB_VERSION=$($CFG_GDB --version 2>/dev/null | head -1)
 807     putvar CFG_GDB_VERSION
 808 fi
 809
 810 if [ -n "$CFG_LLDB" ]
 811 then
 812     # Store LLDB's version
 813     CFG_LLDB_VERSION=$($CFG_LLDB --version 2>/dev/null | head -1)
 814     putvar CFG_LLDB_VERSION
 815
 816     # If CFG_LLDB_PYTHON_DIR is not already set from the outside and valid, try to read it from
 817     # LLDB via the -P commandline options.
 818     if [ -z "$CFG_LLDB_PYTHON_DIR" ] || [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 819     then
 820         CFG_LLDB_PYTHON_DIR=$($CFG_LLDB -P)
 821
 822         # If CFG_LLDB_PYTHON_DIR is not a valid directory, set it to something more readable
 823         if [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 824         then
 825             CFG_LLDB_PYTHON_DIR="LLDB_PYTHON_DIRECTORY_NOT_FOUND"
 826         fi
 827
 828         putvar CFG_LLDB_PYTHON_DIR
 829     fi
 830 fi
 831
 832 # LLDB tests on OSX require /usr/bin/python, not something like Homebrew's
 833 # /usr/local/bin/python. We're loading a compiled module for LLDB tests which is
 834 # only compatible with the system.
 835 case $CFG_BUILD in
 836     *-apple-darwin)
 837         CFG_LLDB_PYTHON=/usr/bin/python
 838         ;;
 839     *)
 840         CFG_LLDB_PYTHON=$CFG_PYTHON
 841         ;;
 842 esac
 843 putvar CFG_LLDB_PYTHON
 844
 845 step_msg "looking for target specific programs"
 846
 847 probe CFG_ADB        adb
 848
 849 BIN_SUF=
 850 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ]
 851 then
 852     BIN_SUF=.exe
 853 fi
 854
 855 # --enable-local-rebuild implies --enable-local-rust too
 856 if [ -n "$CFG_ENABLE_LOCAL_REBUILD" ]
 857 then
 858     if [ -z "$CFG_ENABLE_LOCAL_RUST" ]
 859     then
 860         CFG_ENABLE_LOCAL_RUST=1
 861         putvar CFG_ENABLE_LOCAL_RUST
 862     fi
 863 fi
 864
 865 if [ -n "$CFG_ENABLE_LOCAL_RUST" ]
 866 then
 867     system_rustc=$(which rustc)
 868     if [ -f ${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF} ]
 869     then
 870         : # everything already configured
 871     elif [ -n "$system_rustc" ]
 872     then
 873         # we assume that rustc is in a /bin directory
 874         CFG_LOCAL_RUST_ROOT=${system_rustc%/bin/rustc}
 875     else
 876         err "no local rust to use"
 877     fi
 878
 879     CMD="${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF}"
 880     LRV=`$CMD --version`
 881     if [ $? -ne 0 ]
 882     then
 883         step_msg "failure while running $CMD --version"
 884         exit 1
 885     fi
 886     step_msg "using rustc at: ${CFG_LOCAL_RUST_ROOT} with version: $LRV"
 887     putvar CFG_LOCAL_RUST_ROOT
 888 fi
 889
 890 # Force bitrig to build with clang; gcc doesn't like us there
 891 if [ $CFG_OSTYPE = unknown-bitrig ]
 892 then
 893     step_msg "on Bitrig, forcing use of clang"
 894     CFG_ENABLE_CLANG=1
 895 fi
 896
 897 # default gcc version under OpenBSD maybe too old, try using egcc, which is a
 898 # gcc version from ports
 899 if [ $CFG_OSTYPE = unknown-openbsd ]
 900 then
 901     if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
 902         step_msg "older GCC found, try with egcc instead"
 903
 904         # probe again but using egcc
 905         probe CFG_GCC egcc
 906
 907         # and use egcc/eg++ for CC/CXX too if it was found
 908         # (but user setting has priority)
 909         if [ -n "$CFG_GCC" ]; then
 910             CC="${CC:-egcc}"
 911             CXX="${CXX:-eg++}"
 912         fi
 913     fi
 914 fi
 915
 916 # OS X 10.9, gcc is actually clang. This can cause some confusion in the build
 917 # system, so if we find that gcc is clang, we should just use clang directly.
 918 if [ $CFG_OSTYPE = apple-darwin -a -z "$CFG_ENABLE_CLANG" ]
 919 then
 920     CFG_OSX_GCC_VERSION=$("$CFG_GCC" --version 2>&1 | grep "Apple LLVM version")
 921     if [ $? -eq 0 ]
 922     then
 923         step_msg "on OS X >=10.9, forcing use of clang"
 924         CFG_ENABLE_CLANG=1
 925     else
 926         if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
 927             step_msg "older GCC found, using clang instead"
 928             CFG_ENABLE_CLANG=1
 929         else
 930             # on OS X, with xcode 5 and newer, certain developers may have
 931             # cc, gcc and g++ point to a  mixture of clang and gcc
 932             # if so, this will create very strange build errors
 933             # this last stanza is to detect some such problems and save the future rust
 934             # contributor some time solving that issue.
 935             # this detection could be generalized to other OSes aside from OS X
 936             # but the issue seems most likely to happen on OS X
 937
 938             chk_cc () {
 939                 $1 --version 2> /dev/null | grep -q $2
 940             }
 941             # check that gcc, cc and g++ all point to the same compiler.
 942             # note that for xcode 5, g++ points to clang, not clang++
 943             if !((chk_cc gcc clang  && chk_cc g++ clang) ||
 944                 (chk_cc gcc gcc  &&( chk_cc g++ g++ || chk g++ gcc))); then
 945                 err "the gcc and g++ in your path point to different compilers.
 946     Check which versions are in your path with gcc --version and g++ --version.
 947     To resolve this problem, either fix your PATH  or run configure with --enable-clang"
 948             fi
 949
 950         fi
 951     fi
 952 fi
 953
 954 # If the clang isn't already enabled, check for GCC, and if it is missing, turn
 955 # on clang as a backup.
 956 if [ -z "$CFG_ENABLE_CLANG" ]
 957 then
 958   CFG_GCC_VERSION=$("$CFG_GCC" --version 2>&1)
 959   if [ $? -ne 0 ]
 960   then
 961     step_msg "GCC not installed, will try using Clang"
 962     CFG_ENABLE_CLANG=1
 963   fi
 964 fi
 965
 966 # Okay, at this point, we have made up our minds about whether we are
 967 # going to force CFG_ENABLE_CLANG or not; save the setting if so.
 968 if [ -n "$CFG_ENABLE_CLANG" ]
 969 then
 970     putvar CFG_ENABLE_CLANG
 971 fi
 972
 973 if [ -z "$CFG_DISABLE_LIBCPP" -a -n "$CFG_ENABLE_CLANG" ]
 974 then
 975     CFG_USING_LIBCPP="1"
 976 else
 977     CFG_USING_LIBCPP="0"
 978 fi
 979
 980 # Same with jemalloc.  save the setting here.
 981 if [ -n "$CFG_DISABLE_JEMALLOC" ]
 982 then
 983     putvar CFG_DISABLE_JEMALLOC
 984 fi
 985
 986 if [ -n "$CFG_LLVM_ROOT" -a -z "$CFG_DISABLE_LLVM_VERSION_CHECK" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
 987 then
 988     step_msg "using custom LLVM at $CFG_LLVM_ROOT"
 989
 990     LLVM_CONFIG="$CFG_LLVM_ROOT/bin/llvm-config"
 991     LLVM_VERSION=$($LLVM_CONFIG --version)
 992
 993     case $LLVM_VERSION in
 994         (3.[7-8]*)
 995             msg "found ok version of LLVM: $LLVM_VERSION"
 996             ;;
 997         (*)
 998             err "bad LLVM version: $LLVM_VERSION, need >=3.7"
 999             ;;
1000     esac
1001 fi
1002
1003 # Even when the user overrides the choice of CC, still try to detect
1004 # clang to disable some clang-specific warnings.  We here draw a
1005 # distinction between:
1006 #
1007 #  CFG_ENABLE_CLANG : passed --enable-clang, or host "requires" clang,
1008 #  CFG_USING_CLANG : compiler (clang / gcc / $CC) looks like clang.
1009 #
1010 # This distinction is important because there are some safeguards we
1011 # would prefer to skip when merely CFG_USING_CLANG is set; but when
1012 # CFG_ENABLE_CLANG is set, that indicates that we are opting into
1013 # running such safeguards.
1014
1015 if [ -n "$CC" ]
1016 then
1017     msg "skipping compiler inference steps; using provided CC=$CC"
1018     CFG_CC="$CC"
1019
1020     CFG_OSX_CC_VERSION=$("$CFG_CC" --version 2>&1 | grep "clang")
1021     if [ $? -eq 0 ]
1022     then
1023         step_msg "note, user-provided CC looks like clang; CC=$CC."
1024         CFG_USING_CLANG=1
1025         putvar CFG_USING_CLANG
1026     fi
1027 else
1028     if [ -n "$CFG_ENABLE_CLANG" ]
1029     then
1030         if [ -z "$CFG_CLANG" ]
1031         then
1032             err "clang requested but not found"
1033         fi
1034         CFG_CC="$CFG_CLANG"
1035         CFG_USING_CLANG=1
1036         putvar CFG_USING_CLANG
1037     else
1038         CFG_CC="gcc"
1039     fi
1040 fi
1041
1042 if [ -n "$CFG_ENABLE_CLANG" ]
1043 then
1044     case "$CC" in
1045         (''|*clang)
1046         if [ -z "$CC" ]
1047         then
1048             CFG_CC="clang"
1049             CFG_CXX="clang++"
1050         fi
1051     esac
1052 fi
1053
1054 if [ -n "$CFG_ENABLE_CCACHE" ]
1055 then
1056     if [ -z "$CFG_CCACHE" ]
1057     then
1058         err "ccache requested but not found"
1059     fi
1060
1061     CFG_CC="ccache $CFG_CC"
1062 fi
1063
1064 if [ -z "$CC" -a -z "$CFG_ENABLE_CLANG" -a -z "$CFG_GCC" ]
1065 then
1066     err "either clang or gcc is required"
1067 fi
1068
1069 # All safeguards based on $CFG_ENABLE_CLANG should occur before this
1070 # point in the script; after this point, script logic should inspect
1071 # $CFG_USING_CLANG rather than $CFG_ENABLE_CLANG.
1072
1073 # Set CFG_{CC,CXX,CPP,CFLAGS,CXXFLAGS,LDFLAGS}
1074 envopt CC
1075 envopt CXX
1076 envopt CPP
1077 envopt CFLAGS
1078 envopt CXXFLAGS
1079 envopt LDFLAGS
1080
1081 # stdc++ name in use
1082 # used to manage non-standard name (on OpenBSD for example)
1083 program_transform_name=$($CFG_CC -v 2>&1 | sed -n "s/.*--program-transform-name='\([^']*\)'.*/\1/p")
1084 CFG_STDCPP_NAME=$(echo "stdc++" | sed "${program_transform_name}")
1085 putvar CFG_STDCPP_NAME
1086
1087 # a little post-processing of various config values
1088 CFG_PREFIX=${CFG_PREFIX%/}
1089 CFG_MANDIR=${CFG_MANDIR%/}
1090 CFG_HOST="$(echo $CFG_HOST | tr ',' ' ')"
1091 CFG_TARGET="$(echo $CFG_TARGET | tr ',' ' ')"
1092 CFG_SUPPORTED_TARGET=""
1093 for target_file in ${CFG_SRC_DIR}mk/cfg/*.mk; do
1094   CFG_SUPPORTED_TARGET="${CFG_SUPPORTED_TARGET} $(basename "$target_file" .mk)"
1095 done
1096
1097 # copy build-triples to host-triples so that builds are a subset of hosts
1098 V_TEMP=""
1099 for i in $CFG_BUILD $CFG_HOST;
1100 do
1101    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1102 done
1103 CFG_HOST=$V_TEMP
1104
1105 # copy host-triples to target-triples so that hosts are a subset of targets
1106 V_TEMP=""
1107 for i in $CFG_HOST $CFG_TARGET;
1108 do
1109    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
1110 done
1111 CFG_TARGET=$V_TEMP
1112
1113 # check target-specific tool-chains
1114 for i in $CFG_TARGET
1115 do
1116     L_CHECK=false
1117     for j in $CFG_SUPPORTED_TARGET
1118     do
1119         if [ $i = $j ]
1120         then
1121             L_CHECK=true
1122         fi
1123     done
1124
1125     if [ $L_CHECK = false ]
1126     then
1127         err "unsupported target triples \"$i\" found"
1128     fi
1129
1130     case $i in
1131         *android*)
1132             case $i in
1133                 armv7-linux-androideabi)
1134                     cmd_prefix="arm-linux-androideabi"
1135                     ;;
1136                 *)
1137                     cmd_prefix=$i
1138                     ;;
1139             esac
1140
1141             upper_snake_target=$(echo "$i" | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
1142             eval ndk=\$"CFG_${upper_snake_target}_NDK"
1143             if [ -z "$ndk" ]
1144             then
1145                 ndk=$CFG_ANDROID_CROSS_PATH
1146                 eval "CFG_${upper_snake_target}_NDK"=$CFG_ANDROID_CROSS_PATH
1147                 warn "generic/default Android NDK option is deprecated (use --$i-ndk option instead)"
1148             fi
1149
1150             # Perform a basic sanity check of the NDK
1151             for android_ndk_tool in "$ndk/bin/$cmd_prefix-gcc" "$ndk/bin/$cmd_prefix-g++" "$ndk/bin/$cmd_prefix-ar"
1152             do
1153                 if [ ! -f $android_ndk_tool ]
1154                 then
1155                     err "NDK tool $android_ndk_tool not found (bad or missing --$i-ndk option?)"
1156                 fi
1157             done
1158             ;;
1159         *-unknown-nacl)
1160             if [ -z "$CFG_NACL_CROSS_PATH" ]
1161             then
1162                 err "I need the NaCl SDK path! (use --nacl-cross-path)"
1163             fi
1164             ;;
1165         arm-apple-darwin)
1166             if [ $CFG_OSTYPE != apple-darwin ]
1167             then
1168                 err "The iOS target is only supported on Mac OS X"
1169             fi
1170             ;;
1171
1172
1173         x86_64-*-musl)
1174             if [ ! -f $CFG_MUSL_ROOT/lib/libc.a ]
1175             then
1176                 err "musl libc $CFG_MUSL_ROOT/lib/libc.a not found"
1177             fi
1178             ;;
1179
1180         *-msvc)
1181             # There are three builds of cmake on windows: MSVC, MinGW and Cygwin
1182             # The Cygwin build does not have generators for Visual Studio, so
1183             # detect that here and error.
1184             if ! "$CFG_CMAKE" --help | sed -n '/^Generators/,$p' | grep 'Visual Studio' > /dev/null
1185             then
1186                 err "
1187
1188 cmake does not support Visual Studio generators.
1189
1190 This is likely due to it being an msys/cygwin build of cmake, \
1191 rather than the required windows version, built using MinGW \
1192 or Visual Studio.
1193
1194 If you are building under msys2 try installing the mingw-w64-x86_64-cmake \
1195 package instead of cmake:
1196
1197 $ pacman -R cmake && pacman -S mingw-w64-x86_64-cmake
1198 "
1199             fi
1200
1201             # Use the REG program to figure out where VS is installed
1202             # We need to figure out where cl.exe and link.exe are, so we do some
1203             # munging and some probing here. We also look for the default
1204             # INCLUDE and LIB variables for MSVC so we can set those in the
1205             # build system as well.
1206             install=$(cmd //c reg QUERY \
1207                        'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\14.0' \
1208                        -v InstallDir)
1209             if [ -z "$install" ]; then
1210               install=$(cmd //c reg QUERY \
1211                          'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\12.0' \
1212                          -v InstallDir)
1213             fi
1214             need_ok "couldn't find visual studio install root"
1215             CFG_MSVC_ROOT=$(echo "$install" | grep InstallDir | sed 's/.*REG_SZ[ ]*//')
1216             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1217             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
1218             putvar CFG_MSVC_ROOT
1219
1220             case $i in
1221                 x86_64-*)
1222                     bits=x86_64
1223                     msvc_part=amd64
1224                     ;;
1225                 i*86-*)
1226                     bits=i386
1227                     msvc_part=
1228                     ;;
1229                 *)
1230                     err "can only target x86 targets for MSVC"
1231                     ;;
1232             esac
1233             bindir="${CFG_MSVC_ROOT}/VC/bin"
1234             if [ -n "$msvc_part" ]; then
1235                 bindir="$bindir/$msvc_part"
1236             fi
1237             eval CFG_MSVC_BINDIR_$bits="\"$bindir\""
1238             eval CFG_MSVC_CL_$bits="\"$bindir/cl.exe\""
1239             eval CFG_MSVC_LIB_$bits="\"$bindir/lib.exe\""
1240             eval CFG_MSVC_LINK_$bits="\"$bindir/link.exe\""
1241
1242             vcvarsall="${CFG_MSVC_ROOT}/VC/vcvarsall.bat"
1243             include_path=$(cmd //V:ON //c "$vcvarsall" $msvc_part \& echo !INCLUDE!)
1244             need_ok "failed to learn about MSVC's INCLUDE"
1245             lib_path=$(cmd //V:ON //c "$vcvarsall" $msvc_part \& echo !LIB!)
1246             need_ok "failed to learn about MSVC's LIB"
1247
1248             eval CFG_MSVC_INCLUDE_PATH_${bits}="\"$include_path\""
1249             eval CFG_MSVC_LIB_PATH_${bits}="\"$lib_path\""
1250
1251             putvar CFG_MSVC_BINDIR_${bits}
1252             putvar CFG_MSVC_CL_${bits}
1253             putvar CFG_MSVC_LIB_${bits}
1254             putvar CFG_MSVC_LINK_${bits}
1255             putvar CFG_MSVC_INCLUDE_PATH_${bits}
1256             putvar CFG_MSVC_LIB_PATH_${bits}
1257             ;;
1258
1259         *)
1260             ;;
1261     esac
1262 done
1263
1264 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ] || [ "$CFG_OSTYPE" = "pc-windows-msvc" ]
1265 then
1266     # There are some MSYS python builds which will auto-translate
1267     # windows-style paths to MSYS-style paths in Python itself.
1268     # Unfortunately this breaks LLVM's build system as somewhere along
1269     # the line LLVM prints a path into a file from Python and then CMake
1270     # later tries to interpret that path. If Python prints a MSYS path
1271     # and CMake tries to use it as a Windows path, you're gonna have a
1272     # Bad Time.
1273     #
1274     # Consequently here we try to detect when that happens and print an
1275     # error if it does.
1276     if $CFG_PYTHON -c 'import sys; print sys.argv[1]' `pwd` | grep '^/' > /dev/null
1277     then
1278         err "
1279
1280 python is silently translating windows paths to MSYS paths \
1281 and the build will fail if this python is used.
1282
1283 Either an official python install must be used or an \
1284 alternative python package in MinGW must be used.
1285
1286 If you are building under msys2 try installing the mingw-w64-x86_64-python2 \
1287 package instead of python2:
1288
1289 $ pacman -S mingw-w64-x86_64-python2
1290 "
1291     fi
1292 fi
1293
1294 if [ -n "$CFG_PERF" ]
1295 then
1296     HAVE_PERF_LOGFD=`$CFG_PERF stat --log-fd 2>&1 | grep 'unknown option'`
1297     if [ -z "$HAVE_PERF_LOGFD" ];
1298     then
1299         CFG_PERF_WITH_LOGFD=1
1300         putvar CFG_PERF_WITH_LOGFD
1301     fi
1302 fi
1303
1304 if [ -z "$CFG_ENABLE_RUSTBUILD" ]; then
1305
1306   step_msg "making directories"
1307
1308   for i in \
1309       doc doc/std doc/extra \
1310       dl tmp dist
1311   do
1312       make_dir $i
1313   done
1314
1315   for t in $CFG_HOST
1316   do
1317       make_dir $t/llvm
1318   done
1319
1320   for t in $CFG_HOST
1321   do
1322       make_dir $t/rustllvm
1323   done
1324
1325   for t in $CFG_TARGET
1326   do
1327     make_dir $t/rt
1328     for s in 0 1 2 3
1329     do
1330       make_dir $t/rt/stage$s
1331       make_dir $t/rt/jemalloc
1332       make_dir $t/rt/compiler-rt
1333       for i in                                          \
1334         isaac sync test \
1335         arch/i386 arch/x86_64 arch/arm arch/aarch64 arch/mips arch/powerpc
1336       do
1337         make_dir $t/rt/stage$s/$i
1338       done
1339     done
1340   done
1341
1342   for h in $CFG_HOST
1343   do
1344       for t in $CFG_TARGET
1345       do
1346           # host bin dir stage0
1347           make_dir $h/stage0/bin
1348
1349           # host lib dir stage0
1350           make_dir $h/stage0/lib
1351
1352           # host test dir stage0
1353           make_dir $h/stage0/test
1354
1355           # target bin dir stage0
1356           make_dir $h/stage0/lib/rustlib/$t/bin
1357
1358           # target lib dir stage0
1359           make_dir $h/stage0/lib/rustlib/$t/lib
1360
1361           for i in 1 2 3
1362           do
1363               # host bin dir
1364               make_dir $h/stage$i/bin
1365
1366               # host lib dir
1367               make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE
1368
1369               # host test dir
1370               make_dir $h/stage$i/test
1371
1372               # target bin dir
1373               make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/bin
1374
1375               # target lib dir
1376               make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/lib
1377           done
1378       done
1379
1380       make_dir $h/test/run-pass
1381       make_dir $h/test/run-pass-valgrind
1382       make_dir $h/test/run-pass-fulldeps
1383       make_dir $h/test/run-fail
1384       make_dir $h/test/run-fail-fulldeps
1385       make_dir $h/test/compile-fail
1386       make_dir $h/test/parse-fail
1387       make_dir $h/test/compile-fail-fulldeps
1388       make_dir $h/test/bench
1389       make_dir $h/test/perf
1390       make_dir $h/test/pretty
1391       make_dir $h/test/debuginfo-gdb
1392       make_dir $h/test/debuginfo-lldb
1393       make_dir $h/test/codegen
1394       make_dir $h/test/codegen-units
1395       make_dir $h/test/rustdoc
1396   done
1397
1398 fi
1399
1400 # Configure submodules
1401 step_msg "configuring submodules"
1402
1403 # Have to be in the top of src directory for this
1404 if [ -z $CFG_DISABLE_MANAGE_SUBMODULES ] && [ -z $CFG_ENABLE_RUSTBUILD ]
1405 then
1406     cd ${CFG_SRC_DIR}
1407
1408     msg "git: submodule sync"
1409     "${CFG_GIT}" submodule sync
1410
1411     msg "git: submodule init"
1412     "${CFG_GIT}" submodule init
1413
1414     # Disable submodules that we're not using
1415     if [ -n "${CFG_LLVM_ROOT}" ]; then
1416         msg "git: submodule deinit src/llvm"
1417         "${CFG_GIT}" submodule deinit src/llvm
1418     fi
1419     if [ -n "${CFG_JEMALLOC_ROOT}" ]; then
1420         msg "git: submodule deinit src/jemalloc"
1421         "${CFG_GIT}" submodule deinit src/jemalloc
1422     fi
1423
1424     msg "git: submodule update"
1425     "${CFG_GIT}" submodule update
1426     need_ok "git failed"
1427
1428     msg "git: submodule foreach sync"
1429     "${CFG_GIT}" submodule foreach --recursive 'if test -e .gitmodules; then git submodule sync; fi'
1430     need_ok "git failed"
1431
1432     msg "git: submodule foreach update"
1433     "${CFG_GIT}" submodule update --recursive
1434     need_ok "git failed"
1435
1436     # NB: this is just for the sake of getting the submodule SHA1 values
1437     # and status written into the build log.
1438     msg "git: submodule status"
1439     "${CFG_GIT}" submodule status --recursive
1440
1441     msg "git: submodule clobber"
1442     "${CFG_GIT}" submodule foreach --recursive git clean -dxf
1443     need_ok "git failed"
1444     "${CFG_GIT}" submodule foreach --recursive git checkout .
1445     need_ok "git failed"
1446
1447     cd ${CFG_BUILD_DIR}
1448 fi
1449
1450 # Do a sanity check that the submodule source exists. Because GitHub
1451 # automatically publishes broken tarballs that can't be disabled, and
1452 # people download them and try to use them.
1453 if [ ! -e "${CFG_SRC_DIR}/src/liblibc" ]; then
1454     err "some submodules are missing. Is this a broken tarball?
1455
1456 If you downloaded this tarball from the GitHub release pages at
1457 https://github.com/rust-lang/rust/releases,
1458 then please delete it and instead download the source from
1459 https://www.rust-lang.org/downloads.html"
1460
1461 fi
1462
1463 # Configure llvm, only if necessary
1464 step_msg "looking at LLVM"
1465 CFG_LLVM_SRC_DIR=${CFG_SRC_DIR}src/llvm/
1466 for t in $CFG_HOST
1467 do
1468     do_reconfigure=1
1469     is_msvc=0
1470     case "$t" in
1471         (*-msvc)
1472         is_msvc=1
1473         ;;
1474     esac
1475
1476     if [ -n "$CFG_ENABLE_RUSTBUILD" ]
1477     then
1478         msg "not configuring LLVM, rustbuild in use"
1479         do_reconfigure=0
1480     elif [ -z $CFG_LLVM_ROOT ]
1481     then
1482         LLVM_BUILD_DIR=${CFG_BUILD_DIR}$t/llvm
1483         LLVM_INST_DIR=$LLVM_BUILD_DIR
1484         # For some crazy reason the MSVC output dir is different than Unix
1485         if [ ${is_msvc} -ne 0 ]; then
1486             if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]
1487             then
1488                 # Just use LLVM straight from its build directory to
1489                 # avoid 'make install' time
1490                 LLVM_INST_DIR=$LLVM_BUILD_DIR/Debug
1491             else
1492                 LLVM_INST_DIR=$LLVM_BUILD_DIR/Release
1493             fi
1494         fi
1495     else
1496         msg "not reconfiguring LLVM, external LLVM root"
1497         # The user is using their own LLVM
1498         LLVM_BUILD_DIR=
1499         LLVM_INST_DIR=$CFG_LLVM_ROOT
1500         do_reconfigure=0
1501         # Check that LLVm FileCheck is available. Needed for the tests
1502         if [ -z "$CFG_DISABLE_CODEGEN_TESTS" ]; then
1503             need_cmd $LLVM_INST_DIR/bin/FileCheck
1504         fi
1505     fi
1506
1507     if [ ${do_reconfigure} -ne 0 ]
1508     then
1509     # because git is hilarious, it might have put the module index
1510     # in a couple places.
1511         index1="${CFG_SRC_DIR}.git/modules/src/llvm/index"
1512         index2="${CFG_SRC_DIR}src/llvm/.git/index"
1513         for index in ${index1} ${index2}
1514         do
1515             config_status="${LLVM_BUILD_DIR}/config.status"
1516             if test -e ${index} -a \
1517                     -e ${config_status} -a \
1518                     ${config_status} -nt ${index}
1519             then
1520                 msg "not reconfiguring LLVM, config.status is fresh"
1521                 do_reconfigure=0
1522             fi
1523         done
1524     fi
1525
1526     # We need the generator later on for compiler-rt even if LLVM's not built
1527     if [ ${is_msvc} -ne 0 ]
1528     then
1529         case "$CFG_MSVC_ROOT" in
1530             *14.0*)
1531                 generator="Visual Studio 14 2015"
1532                 ;;
1533             *12.0*)
1534                 generator="Visual Studio 12 2013"
1535                 ;;
1536             *)
1537                 err "can't determine generator for LLVM cmake"
1538                 ;;
1539         esac
1540         case "$t" in
1541             x86_64-*)
1542                 generator="$generator Win64"
1543                 ;;
1544             i686-*)
1545                 ;;
1546             *)
1547                 err "can only build LLVM for x86 platforms"
1548                 ;;
1549         esac
1550     else
1551         generator="Unix Makefiles"
1552     fi
1553     CFG_CMAKE_GENERATOR=$generator
1554     putvar CFG_CMAKE_GENERATOR
1555
1556     msg "configuring LLVM for $t"
1557
1558     LLVM_CFLAGS_32=""
1559     LLVM_CXXFLAGS_32=""
1560     LLVM_LDFLAGS_32=""
1561     LLVM_CFLAGS_64=""
1562     LLVM_CXXFLAGS_64=""
1563     LLVM_LDFLAGS_64=""
1564
1565     case "$CFG_CC" in
1566         ("ccache clang")
1567             LLVM_CXX_32="ccache"
1568             LLVM_CC_32="ccache"
1569             LLVM_CXX_32_ARG1="clang++"
1570             LLVM_CC_32_ARG1="clang"
1571             LLVM_CFLAGS_32="-Qunused-arguments"
1572             LLVM_CXXFLAGS_32="-Qunused-arguments"
1573
1574             LLVM_CXX_64="ccache"
1575             LLVM_CC_64="ccache"
1576             LLVM_CXX_64_ARG1="clang++"
1577             LLVM_CC_64_ARG1="clang"
1578             LLVM_CFLAGS_64="-Qunused-arguments"
1579             LLVM_CXXFLAGS_64="-Qunused-arguments"
1580             ;;
1581         ("clang")
1582             LLVM_CXX_32="clang++"
1583             LLVM_CC_32="clang"
1584             LLVM_CFLAGS_32="-Qunused-arguments"
1585             LLVM_CXXFLAGS_32="-Qunused-arguments"
1586
1587             LLVM_CXX_64="clang++"
1588             LLVM_CC_64="clang"
1589             LLVM_CFLAGS_64="-Qunused-arguments"
1590             LLVM_CXXFLAGS_64="-Qunused-arguments"
1591             ;;
1592         ("ccache gcc")
1593             LLVM_CXX_32="ccache"
1594             LLVM_CC_32="ccache"
1595             LLVM_CXX_32_ARG1="clang++"
1596             LLVM_CC_32_ARG1="clang"
1597
1598             LLVM_CXX_64="ccache"
1599             LLVM_CC_64="ccache"
1600             LLVM_CXX_64_ARG1="g++"
1601             LLVM_CC_64_ARG1="gcc"
1602             ;;
1603         ("gcc")
1604             LLVM_CXX_32="g++"
1605             LLVM_CC_32="gcc"
1606
1607             LLVM_CXX_64="g++"
1608             LLVM_CC_64="gcc"
1609             ;;
1610
1611         (*)
1612             msg "inferring LLVM_CXX/CC from CXX/CC = $CXX/$CC"
1613             if [ -n "$CFG_ENABLE_CCACHE" ]
1614             then
1615                 if [ -z "$CFG_CCACHE" ]
1616                 then
1617                     err "ccache requested but not found"
1618                 fi
1619
1620                 LLVM_CXX_32="ccache"
1621                 LLVM_CC_32="ccache"
1622                 LLVM_CXX_32_ARG1="$CXX"
1623                 LLVM_CC_32_ARG1="$CC"
1624
1625                 LLVM_CXX_64="ccache"
1626                 LLVM_CC_64="ccache"
1627                 LLVM_CXX_64_ARG1="$CXX"
1628                 LLVM_CC_64_ARG1="$CC"
1629             else
1630                 LLVM_CXX_32="$CXX"
1631                 LLVM_CC_32="$CC"
1632
1633                 LLVM_CXX_64="$CXX"
1634                 LLVM_CC_64="$CC"
1635             fi
1636
1637             ;;
1638     esac
1639
1640     case "$CFG_CPUTYPE" in
1641         (x86*)
1642             LLVM_CFLAGS_32="$LLVM_CFLAGS_32 -m32"
1643             LLVM_CXXFLAGS_32="$LLVM_CXXFLAGS_32 -m32"
1644             LLVM_LDFLAGS_32="$LLVM_LDFLAGS_32 -m32"
1645             ;;
1646     esac
1647
1648     if echo $t | grep -q x86_64
1649     then
1650         LLVM_CXX=$LLVM_CXX_64
1651         LLVM_CC=$LLVM_CC_64
1652         LLVM_CXX_ARG1=$LLVM_CXX_64_ARG1
1653         LLVM_CC_ARG1=$LLVM_CC_64_ARG1
1654         LLVM_CFLAGS=$LLVM_CFLAGS_64
1655         LLVM_CXXFLAGS=$LLVM_CXXFLAGS_64
1656         LLVM_LDFLAGS=$LLVM_LDFLAGS_64
1657     else
1658         LLVM_CXX=$LLVM_CXX_32
1659         LLVM_CC=$LLVM_CC_32
1660         LLVM_CXX_ARG1=$LLVM_CXX_32_ARG1
1661         LLVM_CC_ARG1=$LLVM_CC_32_ARG1
1662         LLVM_CFLAGS=$LLVM_CFLAGS_32
1663         LLVM_CXXFLAGS=$LLVM_CXXFLAGS_32
1664         LLVM_LDFLAGS=$LLVM_LDFLAGS_32
1665     fi
1666
1667     if [ "$CFG_USING_LIBCPP" != "0" ]; then
1668         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_LIBCXX=ON"
1669     fi
1670
1671     # Turn off things we don't need
1672     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_INCLUDE_TESTS=OFF"
1673     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_INCLUDE_EXAMPLES=OFF"
1674     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_INCLUDE_DOCS=OFF"
1675     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ZLIB=OFF"
1676     CMAKE_ARGS="$CMAKE_ARGS -DWITH_POLY=OFF"
1677     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_TERMINFO=OFF"
1678     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_LIBEDIT=OFF"
1679
1680     arch="$(echo "$t" | cut -d - -f 1)"
1681
1682     if [ "$arch" = i686 ]; then
1683         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_BUILD_32_BITS=ON"
1684     fi
1685
1686     if [ "$t" != "$CFG_BUILD" ]; then
1687         # see http://llvm.org/docs/HowToCrossCompileLLVM.html
1688         CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_CROSSCOMPILING=True"
1689         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_TARGET_ARCH=$arch"
1690         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_TABLEGEN=$CFG_BUILD_DIR/$CFG_BUILD/llvm/bin/llvm-tblgen"
1691         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_DEFAULT_TARGET_TRIPLE=$t"
1692     fi
1693
1694     # MSVC handles compiler business itself
1695     if [ ${is_msvc} -eq 0 ]; then
1696         CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_C_COMPILER=$LLVM_CC"
1697         CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_CXX_COMPILER=$LLVM_CXX"
1698         CMAKE_ARGS="$CMAKE_ARGS '-DCMAKE_C_FLAGS=$LLVM_CFLAGS'"
1699         CMAKE_ARGS="$CMAKE_ARGS '-DCMAKE_CXX_FLAGS=$LLVM_CXXFLAGS'"
1700         if [ -n "$LLVM_CC_ARG1" ]; then
1701             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_C_COMPILER_ARG1=$LLVM_CC_ARG1"
1702         fi
1703         if [ -n "$LLVM_CXX_ARG1" ]; then
1704             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_CXX_COMPILER_ARG1=$LLVM_CXX_ARG1"
1705         fi
1706         # FIXME: What about LDFLAGS?
1707     fi
1708
1709     if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then
1710         CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Debug"
1711     else
1712         CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Release"
1713     fi
1714     if [ -z "$CFG_ENABLE_LLVM_ASSERTIONS" ]
1715     then
1716         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=OFF"
1717     else
1718         CMAKE_ARGS="$CMAKE_ARGS -DLLVM_ENABLE_ASSERTIONS=ON"
1719     fi
1720
1721     CMAKE_ARGS="$CMAKE_ARGS -DLLVM_TARGETS_TO_BUILD='X86;ARM;AArch64;Mips;PowerPC'"
1722     CMAKE_ARGS="$CMAKE_ARGS -G '$CFG_CMAKE_GENERATOR'"
1723     CMAKE_ARGS="$CMAKE_ARGS $CFG_LLVM_SRC_DIR"
1724
1725     if [ ${do_reconfigure} -ne 0 ]
1726     then
1727         msg "configuring LLVM for $t with cmake"
1728
1729         msg "configuring LLVM with:"
1730         msg "$CMAKE_ARGS"
1731
1732         (cd $LLVM_BUILD_DIR && eval "\"$CFG_CMAKE\"" $CMAKE_ARGS)
1733         need_ok "LLVM cmake configure failed"
1734     fi
1735
1736     # Construct variables for LLVM build and install directories for
1737     # each target. These will be named
1738     # CFG_LLVM_BUILD_DIR_${target_triple} but all the hyphens in
1739     # target_triple will be converted to underscore, because bash
1740     # variables can't contain hyphens. The makefile will then have to
1741     # convert back.
1742     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1743     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1744     eval ${CFG_LLVM_BUILD_DIR}="'$LLVM_BUILD_DIR'"
1745     eval ${CFG_LLVM_INST_DIR}="'$LLVM_INST_DIR'"
1746 done
1747
1748
1749 step_msg "writing configuration"
1750
1751 putvar CFG_SRC_DIR
1752 putvar CFG_SRC_DIR_RELATIVE
1753 putvar CFG_BUILD_DIR
1754 putvar CFG_OSTYPE
1755 putvar CFG_CPUTYPE
1756 putvar CFG_CONFIGURE_ARGS
1757 putvar CFG_PREFIX
1758 putvar CFG_HOST
1759 putvar CFG_TARGET
1760 putvar CFG_LIBDIR_RELATIVE
1761 putvar CFG_DISABLE_MANAGE_SUBMODULES
1762 putvar CFG_AARCH64_LINUX_ANDROID_NDK
1763 putvar CFG_ARM_LINUX_ANDROIDEABI_NDK
1764 putvar CFG_ARMV7_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