configure

   1 #!/bin/sh
   2
   3 msg() {
   4     echo "configure: $1"
   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 need_ok() {
  23     if [ $? -ne 0 ]
  24     then
  25         err "$1"
  26     fi
  27 }
  28
  29 need_cmd() {
  30     if command -v $1 >/dev/null 2>&1
  31     then msg "found program $1"
  32     else err "need program $1"
  33     fi
  34 }
  35
  36 make_dir() {
  37     if [ ! -d $1 ]
  38     then
  39         msg "mkdir -p $1"
  40         mkdir -p $1
  41     fi
  42 }
  43
  44 copy_if_changed() {
  45     if cmp -s $1 $2
  46     then
  47         msg "leaving $2 unchanged"
  48     else
  49         msg "cp $1 $2"
  50         cp -f $1 $2
  51         chmod u-w $2 # make copied artifact read-only
  52     fi
  53 }
  54
  55 move_if_changed() {
  56     if cmp -s $1 $2
  57     then
  58         msg "leaving $2 unchanged"
  59     else
  60         msg "mv $1 $2"
  61         mv -f $1 $2
  62         chmod u-w $2 # make moved artifact read-only
  63     fi
  64 }
  65
  66 putvar() {
  67     local T
  68     eval T=\$$1
  69     eval TLEN=\${#$1}
  70     if [ $TLEN -gt 35 ]
  71     then
  72         printf "configure: %-20s := %.35s ...\n" $1 "$T"
  73     else
  74         printf "configure: %-20s := %s %s\n" $1 "$T" "$2"
  75     fi
  76     printf "%-20s := %s\n" $1 "$T" >>config.tmp
  77 }
  78
  79 putpathvar() {
  80     local T
  81     eval T=\$$1
  82     eval TLEN=\${#$1}
  83     if [ $TLEN -gt 35 ]
  84     then
  85         printf "configure: %-20s := %.35s ...\n" $1 "$T"
  86     else
  87         printf "configure: %-20s := %s %s\n" $1 "$T" "$2"
  88     fi
  89     if [ -z "$T" ]
  90     then
  91         printf "%-20s := \n" $1 >>config.tmp
  92     else
  93         printf "%-20s := \"%s\"\n" $1 "$T" >>config.tmp
  94     fi
  95 }
  96
  97 probe() {
  98     local V=$1
  99     shift
 100     local P
 101     local T
 102     for P
 103     do
 104         T=$(command -v $P 2>&1)
 105         if [ $? -eq 0 ]
 106         then
 107             VER0=$($P --version 2>/dev/null | head -1 \
 108                 |  sed -e 's/[^0-9]*\([vV]\?[0-9.]\+[^ ]*\).*/\1/' )
 109             if [ $? -eq 0 -a "x${VER0}" != "x" ]
 110             then
 111               VER="($VER0)"
 112             else
 113               VER=""
 114             fi
 115             break
 116         else
 117             VER=""
 118             T=""
 119         fi
 120     done
 121     eval $V=\$T
 122     putpathvar $V "$VER"
 123 }
 124
 125 probe_need() {
 126     local V=$1
 127     probe $*
 128     eval VV=\$$V
 129     if [ -z "$VV" ]
 130     then
 131         err "needed, but unable to find any of: $*"
 132     fi
 133 }
 134
 135 validate_opt () {
 136     for arg in $CFG_CONFIGURE_ARGS
 137     do
 138         isArgValid=0
 139         for option in $BOOL_OPTIONS
 140         do
 141             if test --disable-$option = $arg
 142             then
 143                 isArgValid=1
 144             fi
 145             if test --enable-$option = $arg
 146             then
 147                 isArgValid=1
 148             fi
 149         done
 150         for option in $VAL_OPTIONS
 151         do
 152             if echo "$arg" | grep -q -- "--$option="
 153             then
 154                 isArgValid=1
 155             fi
 156         done
 157         if [ "$arg" = "--help" ]
 158         then
 159             echo
 160             echo "No more help available for Configure options,"
 161             echo "check the Wiki or join our IRC channel"
 162             break
 163         else
 164             if test $isArgValid -eq 0
 165             then
 166                 err "Option '$arg' is not recognized"
 167             fi
 168         fi
 169     done
 170 }
 171
 172 # `valopt OPTION_NAME DEFAULT DOC` extracts a string-valued option
 173 # from command line, using provided default value for the option if
 174 # not present, and saves it to the generated config.mk.
 175 #
 176 # `valopt_nosave` is much the same, except that it does not save the
 177 # result to config.mk (instead the script should use `putvar` itself
 178 # later on to save it).  `valopt_core` is the core upon which the
 179 # other two are built.
 180
 181 valopt_core() {
 182     VAL_OPTIONS="$VAL_OPTIONS $2"
 183
 184     local SAVE=$1
 185     local OP=$2
 186     local DEFAULT=$3
 187     shift
 188     shift
 189     shift
 190     local DOC="$*"
 191     if [ $HELP -eq 0 ]
 192     then
 193         local UOP=$(echo $OP | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
 194         local V="CFG_${UOP}"
 195         eval $V="$DEFAULT"
 196         for arg in $CFG_CONFIGURE_ARGS
 197         do
 198             if echo "$arg" | grep -q -- "--$OP="
 199             then
 200                 val=$(echo "$arg" | cut -f2 -d=)
 201                 eval $V=$val
 202             fi
 203         done
 204         if [ "$SAVE" = "save" ]
 205         then
 206             putvar $V
 207         fi
 208     else
 209         if [ -z "$DEFAULT" ]
 210         then
 211             DEFAULT="<none>"
 212         fi
 213         OP="${OP}=[${DEFAULT}]"
 214         printf "    --%-30s %s\n" "$OP" "$DOC"
 215     fi
 216 }
 217
 218 valopt_nosave() {
 219     valopt_core nosave "$@"
 220 }
 221
 222 valopt() {
 223     valopt_core save "$@"
 224 }
 225
 226 # `opt OPTION_NAME DEFAULT DOC` extracts a boolean-valued option from
 227 # command line, using the provided default value (0/1) for the option
 228 # if not present, and saves it to the generated config.mk.
 229 #
 230 # `opt_nosave` is much the same, except that it does not save the
 231 # result to config.mk (instead the script should use `putvar` itself
 232 # later on to save it).  `opt_core` is the core upon which the other
 233 # two are built.
 234
 235 opt_core() {
 236     BOOL_OPTIONS="$BOOL_OPTIONS $2"
 237
 238     local SAVE=$1
 239     local OP=$2
 240     local DEFAULT=$3
 241     shift
 242     shift
 243     shift
 244     local DOC="$*"
 245     local FLAG=""
 246
 247     if [ $DEFAULT -eq 0 ]
 248     then
 249         FLAG="enable"
 250     else
 251         FLAG="disable"
 252         DOC="don't $DOC"
 253     fi
 254
 255     if [ $HELP -eq 0 ]
 256     then
 257         for arg in $CFG_CONFIGURE_ARGS
 258         do
 259             if [ "$arg" = "--${FLAG}-${OP}" ]
 260             then
 261                 OP=$(echo $OP | tr 'a-z-' 'A-Z_')
 262                 FLAG=$(echo $FLAG | tr 'a-z' 'A-Z')
 263                 local V="CFG_${FLAG}_${OP}"
 264                 eval $V=1
 265                 if [ "$SAVE" = "save" ]
 266                 then
 267                    putvar $V
 268                 fi
 269             fi
 270         done
 271     else
 272         if [ ! -z "$META" ]
 273         then
 274             OP="$OP=<$META>"
 275         fi
 276         printf "    --%-30s %s\n" "$FLAG-$OP" "$DOC"
 277      fi
 278 }
 279
 280 opt_nosave() {
 281     opt_core nosave "$@"
 282 }
 283
 284 opt() {
 285     opt_core save "$@"
 286 }
 287
 288 envopt() {
 289     local NAME=$1
 290     local V="CFG_${NAME}"
 291     eval VV=\$$V
 292
 293     # If configure didn't set a value already, then check environment.
 294     #
 295     # (It is recommended that the configure script always check the
 296     # environment before setting any values to envopt variables; see
 297     # e.g.  how CFG_CC is handled, where it first checks `-z "$CC"`,
 298     # and issues msg if it ends up employing that provided value.)
 299     if [ -z "$VV" ]
 300     then
 301         eval $V=\$$NAME
 302         eval VV=\$$V
 303     fi
 304
 305     # If script or environment provided a value, save it.
 306     if [ ! -z "$VV" ]
 307     then
 308         putvar $V
 309     fi
 310 }
 311
 312 to_llvm_triple() {
 313     case $1 in
 314         i686-w64-mingw32) echo i686-pc-windows-gnu ;;
 315         x86_64-w64-mingw32) echo x86_64-pc-windows-gnu ;;
 316         *) echo $1 ;;
 317     esac
 318 }
 319
 320 to_gnu_triple() {
 321     case $1 in
 322         i686-pc-windows-gnu) echo i686-w64-mingw32 ;;
 323         x86_64-pc-windows-gnu) echo x86_64-w64-mingw32 ;;
 324         *) echo $1 ;;
 325     esac
 326 }
 327
 328 msg "looking for configure programs"
 329 need_cmd cmp
 330 need_cmd mkdir
 331 need_cmd printf
 332 need_cmd cut
 333 need_cmd head
 334 need_cmd grep
 335 need_cmd xargs
 336 need_cmd cp
 337 need_cmd find
 338 need_cmd uname
 339 need_cmd date
 340 need_cmd tr
 341 need_cmd sed
 342 need_cmd file
 343 need_cmd make
 344
 345 msg "inspecting environment"
 346
 347 CFG_OSTYPE=$(uname -s)
 348 CFG_CPUTYPE=$(uname -m)
 349
 350 if [ $CFG_OSTYPE = Darwin -a $CFG_CPUTYPE = i386 ]
 351 then
 352     # Darwin's `uname -s` lies and always returns i386. We have to use sysctl
 353     # instead.
 354     if sysctl hw.optional.x86_64 | grep -q ': 1'
 355     then
 356         CFG_CPUTYPE=x86_64
 357     fi
 358 fi
 359
 360 # The goal here is to come up with the same triple as LLVM would,
 361 # at least for the subset of platforms we're willing to target.
 362
 363 case $CFG_OSTYPE in
 364
 365     Linux)
 366         CFG_OSTYPE=unknown-linux-gnu
 367         ;;
 368
 369     FreeBSD)
 370         CFG_OSTYPE=unknown-freebsd
 371         ;;
 372
 373     DragonFly)
 374         CFG_OSTYPE=unknown-dragonfly
 375         ;;
 376
 377     OpenBSD)
 378         CFG_OSTYPE=unknown-openbsd
 379        ;;
 380
 381     Darwin)
 382         CFG_OSTYPE=apple-darwin
 383         ;;
 384
 385     MINGW*)
 386         # msys' `uname` does not print gcc configuration, but prints msys
 387         # configuration. so we cannot believe `uname -m`:
 388         # msys1 is always i686 and msys2 is always x86_64.
 389         # instead, msys defines $MSYSTEM which is MINGW32 on i686 and
 390         # MINGW64 on x86_64.
 391         CFG_CPUTYPE=i686
 392         CFG_OSTYPE=pc-windows-gnu
 393         if [ "$MSYSTEM" = MINGW64 ]
 394         then
 395             CFG_CPUTYPE=x86_64
 396         fi
 397         ;;
 398
 399     MSYS*)
 400         CFG_OSTYPE=pc-windows-gnu
 401         ;;
 402
 403 # Thad's Cygwin identifers below
 404
 405 #   Vista 32 bit
 406     CYGWIN_NT-6.0)
 407         CFG_OSTYPE=pc-windows-gnu
 408         CFG_CPUTYPE=i686
 409         ;;
 410
 411 #   Vista 64 bit
 412     CYGWIN_NT-6.0-WOW64)
 413         CFG_OSTYPE=pc-windows-gnu
 414         CFG_CPUTYPE=x86_64
 415         ;;
 416
 417 #   Win 7 32 bit
 418     CYGWIN_NT-6.1)
 419         CFG_OSTYPE=pc-windows-gnu
 420         CFG_CPUTYPE=i686
 421         ;;
 422
 423 #   Win 7 64 bit
 424     CYGWIN_NT-6.1-WOW64)
 425         CFG_OSTYPE=pc-windows-gnu
 426         CFG_CPUTYPE=x86_64
 427         ;;
 428
 429 # We do not detect other OS such as XP/2003 using 64 bit using uname.
 430 # 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.
 431     *)
 432         err "unknown OS type: $CFG_OSTYPE"
 433         ;;
 434 esac
 435
 436
 437 case $CFG_CPUTYPE in
 438
 439     i386 | i486 | i686 | i786 | x86)
 440         CFG_CPUTYPE=i686
 441         ;;
 442
 443     xscale | arm)
 444         CFG_CPUTYPE=arm
 445         ;;
 446
 447     armv7l)
 448         CFG_CPUTYPE=arm
 449         CFG_OSTYPE="${CFG_OSTYPE}eabihf"
 450         ;;
 451
 452     aarch64)
 453         CFG_CPUTYPE=aarch64
 454         ;;
 455
 456     powerpc)
 457         CFG_CPUTYPE=powerpc
 458         ;;
 459
 460     x86_64 | x86-64 | x64 | amd64)
 461         CFG_CPUTYPE=x86_64
 462         ;;
 463
 464     *)
 465         err "unknown CPU type: $CFG_CPUTYPE"
 466 esac
 467
 468 # Detect 64 bit linux systems with 32 bit userland and force 32 bit compilation
 469 if [ $CFG_OSTYPE = unknown-linux-gnu -a $CFG_CPUTYPE = x86_64 ]
 470 then
 471     file -L "$SHELL" | grep -q "x86[_-]64"
 472     if [ $? != 0 ]; then
 473         CFG_CPUTYPE=i686
 474     fi
 475 fi
 476
 477
 478 DEFAULT_BUILD="${CFG_CPUTYPE}-${CFG_OSTYPE}"
 479
 480 CFG_SRC_DIR="$(cd $(dirname $0) && pwd)/"
 481 CFG_BUILD_DIR="$(pwd)/"
 482 CFG_SELF="$0"
 483 CFG_CONFIGURE_ARGS="$@"
 484
 485 OPTIONS=""
 486 HELP=0
 487 if [ "$1" = "--help" ]
 488 then
 489     HELP=1
 490     shift
 491     echo
 492     echo "Usage: $CFG_SELF [options]"
 493     echo
 494     echo "Options:"
 495     echo
 496 else
 497     msg "recreating config.tmp"
 498     echo '' >config.tmp
 499
 500     step_msg "processing $CFG_SELF args"
 501 fi
 502
 503 BOOL_OPTIONS=""
 504 VAL_OPTIONS=""
 505
 506 opt valgrind 0 "run tests with valgrind (memcheck by default)"
 507 opt helgrind 0 "run tests with helgrind instead of memcheck"
 508 opt valgrind-rpass 1 "run rpass-valgrind tests with valgrind"
 509 opt docs     1 "build documentation"
 510 opt optimize 1 "build optimized rust code"
 511 opt optimize-cxx 1 "build optimized C++ code"
 512 opt optimize-llvm 1 "build optimized LLVM"
 513 opt optimize-tests 1 "build tests with optimizations"
 514 opt libcpp 1 "build with llvm with libc++ instead of libstdc++ when using clang"
 515 opt llvm-assertions 1 "build LLVM with assertions"
 516 opt debug 1 "build with extra debug fun"
 517 opt fast-make 0 "use .gitmodules as timestamp for submodule deps"
 518 opt ccache 0 "invoke gcc/clang via ccache to reuse object files between builds"
 519 opt local-rust 0 "use an installed rustc rather than downloading a snapshot"
 520 opt llvm-static-stdcpp 0 "statically link to libstdc++ for LLVM"
 521 opt rpath 0 "build rpaths into rustc itself"
 522 opt nightly 0 "build nightly packages"
 523 opt verify-install 1 "verify installed binaries work"
 524 # This is used by the automation to produce single-target nightlies
 525 opt dist-host-only 0 "only install bins for the host architecture"
 526 opt inject-std-version 1 "inject the current compiler version of libstd into programs"
 527 opt jemalloc 1 "build liballoc with jemalloc"
 528 opt llvm-version-check 1 "don't check if the LLVM version is supported, build anyway"
 529
 530 valopt localstatedir "/var/lib" "local state directory"
 531 valopt sysconfdir "/etc" "install system configuration files"
 532
 533 valopt datadir "${CFG_PREFIX}/share" "install data"
 534 valopt infodir "${CFG_PREFIX}/share/info" "install additional info"
 535 valopt llvm-root "" "set LLVM root"
 536 valopt jemalloc-root "" "set directory where libjemalloc_pic.a is located"
 537 valopt build "${DEFAULT_BUILD}" "GNUs ./configure syntax LLVM build triple"
 538 valopt android-cross-path "/opt/ndk_standalone" "Android NDK standalone path"
 539
 540 # Many of these are saved below during the "writing configuration" step
 541 # (others are conditionally saved).
 542 opt_nosave manage-submodules 1 "let the build manage the git submodules"
 543 opt_nosave clang 0 "prefer clang to gcc for building the runtime"
 544
 545 valopt_nosave prefix "/usr/local" "set installation prefix"
 546 valopt_nosave local-rust-root "/usr/local" "set prefix for local rust binary"
 547 valopt_nosave host "${CFG_BUILD}" "GNUs ./configure syntax LLVM host triples"
 548 valopt_nosave target "${CFG_HOST}" "GNUs ./configure syntax LLVM target triples"
 549 valopt_nosave mandir "${CFG_PREFIX}/share/man" "install man pages in PATH"
 550 valopt_nosave release-channel "dev" "the name of the release channel to build"
 551
 552 # Temporarily support old triples until buildbots get updated
 553 CFG_BUILD=$(to_llvm_triple $CFG_BUILD)
 554 putvar CFG_BUILD # Yes, this creates a duplicate entry, but the last one wins.
 555 CFG_HOST=$(to_llvm_triple $CFG_HOST)
 556 CFG_TARGET=$(to_llvm_triple $CFG_TARGET)
 557
 558 # On windows we just store the libraries in the bin directory because
 559 # there's no rpath. This is where the build system itself puts libraries;
 560 # --libdir is used to configure the installation directory.
 561 # FIXME: This needs to parameterized over target triples. Do it in platform.mk
 562 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ]
 563 then
 564     CFG_LIBDIR_RELATIVE=bin
 565 else
 566     CFG_LIBDIR_RELATIVE=lib
 567 fi
 568
 569 valopt libdir "${CFG_PREFIX}/${CFG_LIBDIR_RELATIVE}" "install libraries (do not set it on windows platform)"
 570
 571 case "$CFG_LIBDIR" in
 572     "$CFG_PREFIX"/*) CAT_INC=2;;
 573     "$CFG_PREFIX"*)  CAT_INC=1;;
 574     *)
 575         err "libdir must begin with the prefix. Use --prefix to set it accordingly.";;
 576 esac
 577
 578 CFG_LIBDIR_RELATIVE=`echo ${CFG_LIBDIR} | cut -c$((${#CFG_PREFIX}+${CAT_INC}))-`
 579
 580 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ] && [ "$CFG_LIBDIR_RELATIVE" != "bin" ]; then
 581     err "libdir on windows should be set to 'bin'"
 582 fi
 583
 584 if [ $HELP -eq 1 ]
 585 then
 586     echo
 587     exit 0
 588 fi
 589
 590 # Validate Options
 591 step_msg "validating $CFG_SELF args"
 592 validate_opt
 593
 594 # Validate the release channel
 595 case "$CFG_RELEASE_CHANNEL" in
 596     (dev | nightly | beta | stable)
 597         ;;
 598     (*)
 599         err "release channel must be 'dev', 'nightly', 'beta' or 'stable'"
 600         ;;
 601 esac
 602
 603 # Continue supporting the old --enable-nightly flag to transition the bots
 604 # XXX Remove me
 605 if [ ! -z "$CFG_ENABLE_NIGHTLY" ]
 606 then
 607     CFG_RELEASE_CHANNEL=nightly
 608 fi
 609 putvar CFG_RELEASE_CHANNEL
 610
 611 # A magic value that allows the compiler to use unstable features
 612 # during the bootstrap even when doing so would normally be an error
 613 # because of feature staging or because the build turns on
 614 # warnings-as-errors and unstable features default to warnings.  The
 615 # build has to match this key in an env var. Meant to be a mild
 616 # deterrent from users just turning on unstable features on the stable
 617 # channel.
 618 # Basing CFG_BOOTSTRAP_KEY on CFG_BOOTSTRAP_KEY lets it get picked up
 619 # during a Makefile reconfig.
 620 CFG_BOOTSTRAP_KEY="${CFG_BOOTSTRAP_KEY-`date +%H:%M:%S`}"
 621 putvar CFG_BOOTSTRAP_KEY
 622
 623 step_msg "looking for build programs"
 624
 625 probe_need CFG_CURLORWGET  curl wget
 626 probe_need CFG_PYTHON      python2.7 python2.6 python2 python
 627
 628 python_version=$($CFG_PYTHON -V 2>&1)
 629 if [ $(echo $python_version | grep -c '^Python 2\.[4567]') -ne 1 ]; then
 630     err "Found $python_version, but LLVM requires Python 2.4-2.7"
 631 fi
 632
 633 # If we have no git directory then we are probably a tarball distribution
 634 # and shouldn't attempt to load submodules
 635 if [ ! -e ${CFG_SRC_DIR}.git ]
 636 then
 637     probe CFG_GIT          git
 638     msg "git: no git directory. disabling submodules"
 639     CFG_DISABLE_MANAGE_SUBMODULES=1
 640 else
 641     probe_need CFG_GIT     git
 642 fi
 643
 644 probe CFG_CLANG            clang++
 645 probe CFG_CCACHE           ccache
 646 probe CFG_GCC              gcc
 647 probe CFG_LD               ld
 648 probe CFG_VALGRIND         valgrind
 649 probe CFG_PERF             perf
 650 probe CFG_ISCC             iscc
 651 probe CFG_JAVAC            javac
 652 probe CFG_ANTLR4           antlr4
 653 probe CFG_GRUN             grun
 654 probe CFG_FLEX             flex
 655 probe CFG_BISON            bison
 656 probe CFG_PANDOC           pandoc
 657 probe CFG_XELATEX          xelatex
 658 probe CFG_GDB              gdb
 659 probe CFG_LLDB             lldb
 660
 661 if [ ! -z "$CFG_GDB" ]
 662 then
 663     # Store GDB's version
 664     CFG_GDB_VERSION=$($CFG_GDB --version 2>/dev/null | head -1)
 665     putvar CFG_GDB_VERSION
 666 fi
 667
 668 if [ ! -z "$CFG_LLDB" ]
 669 then
 670     # Store LLDB's version
 671     CFG_LLDB_VERSION=$($CFG_LLDB --version 2>/dev/null | head -1)
 672     putvar CFG_LLDB_VERSION
 673
 674     # If CFG_LLDB_PYTHON_DIR is not already set from the outside and valid, try to read it from
 675     # LLDB via the -P commandline options.
 676     if [ -z "$CFG_LLDB_PYTHON_DIR" ] || [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 677     then
 678         CFG_LLDB_PYTHON_DIR=$($CFG_LLDB -P)
 679
 680         # If CFG_LLDB_PYTHON_DIR is not a valid directory, set it to something more readable
 681         if [ ! -d "$CFG_LLDB_PYTHON_DIR" ]
 682         then
 683             CFG_LLDB_PYTHON_DIR="LLDB_PYTHON_DIRECTORY_NOT_FOUND"
 684         fi
 685
 686         putvar CFG_LLDB_PYTHON_DIR
 687     fi
 688 fi
 689
 690 step_msg "looking for target specific programs"
 691
 692 probe CFG_ADB        adb
 693
 694 if [ ! -z "$CFG_PANDOC" ]
 695 then
 696     PV_MAJOR_MINOR=$(pandoc --version | grep '^pandoc\(.exe\)\? ' |
 697         # extract the first 2 version fields, ignore everything else
 698         sed 's/pandoc\(.exe\)\? \([0-9]*\)\.\([0-9]*\).*/\2 \3/')
 699
 700     MIN_PV_MAJOR="1"
 701     MIN_PV_MINOR="9"
 702     # these patterns are shell globs, *not* regexps
 703     PV_MAJOR=${PV_MAJOR_MINOR% *}
 704     PV_MINOR=${PV_MAJOR_MINOR#* }
 705     if [ "$PV_MAJOR" -lt "$MIN_PV_MAJOR" ] || [ "$PV_MINOR" -lt "$MIN_PV_MINOR" ]
 706     then
 707         step_msg "pandoc $PV_MAJOR.$PV_MINOR is too old. Need at least $MIN_PV_MAJOR.$MIN_PV_MINOR. Disabling"
 708         BAD_PANDOC=1
 709     fi
 710 fi
 711
 712 BIN_SUF=
 713 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ]
 714 then
 715     BIN_SUF=.exe
 716 fi
 717
 718 if [ ! -z "$CFG_ENABLE_LOCAL_RUST" ]
 719 then
 720     system_rustc=$(which rustc)
 721     if [ -f ${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF} ]
 722     then
 723         : # everything already configured
 724     elif [ -n "$system_rustc" ]
 725     then
 726         # we assume that rustc is in a /bin directory
 727         CFG_LOCAL_RUST_ROOT=${system_rustc%/bin/rustc}
 728     else
 729         err "no local rust to use"
 730     fi
 731
 732     CMD="${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF}"
 733     LRV=`$CMD --version`
 734     if [ $? -ne 0 ]
 735     then
 736         step_msg "failure while running $CMD --version"
 737         exit 1
 738     fi
 739     step_msg "using rustc at: ${CFG_LOCAL_RUST_ROOT} with version: $LRV"
 740     putvar CFG_LOCAL_RUST_ROOT
 741 fi
 742
 743 # Force freebsd to build with clang; gcc doesn't like us there
 744 if [ $CFG_OSTYPE = unknown-freebsd ]
 745 then
 746     step_msg "on FreeBSD, forcing use of clang"
 747     CFG_ENABLE_CLANG=1
 748 fi
 749
 750 if [ -z "$CFG_ENABLE_CLANG" -a -z "$CFG_GCC" ]
 751 then
 752     err "either clang or gcc is required"
 753 fi
 754
 755 # OS X 10.9, gcc is actually clang. This can cause some confusion in the build
 756 # system, so if we find that gcc is clang, we should just use clang directly.
 757 if [ $CFG_OSTYPE = apple-darwin -a -z "$CFG_ENABLE_CLANG" ]
 758 then
 759     CFG_OSX_GCC_VERSION=$("$CFG_GCC" --version 2>&1 | grep "Apple LLVM version")
 760     if [ $? -eq 0 ]
 761     then
 762         step_msg "on OS X 10.9, forcing use of clang"
 763         CFG_ENABLE_CLANG=1
 764     else
 765         if [ $("$CFG_GCC" --version 2>&1 | grep -c ' 4\.[0-6]') -ne 0 ]; then
 766             step_msg "older GCC found, using clang instead"
 767             CFG_ENABLE_CLANG=1
 768         else
 769             # on OS X, with xcode 5 and newer, certain developers may have
 770             # cc, gcc and g++ point to a  mixture of clang and gcc
 771             # if so, this will create very strange build errors
 772             # this last stanza is to detect some such problems and save the future rust
 773             # contributor some time solving that issue.
 774             # this detection could be generalized to other OSes aside from OS X
 775             # but the issue seems most likely to happen on OS X
 776
 777             chk_cc () {
 778                 $1 --version 2> /dev/null | grep -q $2
 779             }
 780             # check that gcc, cc and g++ all point to the same compiler.
 781             # note that for xcode 5, g++ points to clang, not clang++
 782             if !((chk_cc gcc clang  && chk_cc g++ clang) ||
 783                 (chk_cc gcc gcc  &&( chk_cc g++ g++ || chk g++ gcc))); then
 784                 err "the gcc and g++ in your path point to different compilers.
 785     Check which versions are in your path with gcc --version and g++ --version.
 786     To resolve this problem, either fix your PATH  or run configure with --enable-clang"
 787             fi
 788
 789         fi
 790     fi
 791 fi
 792
 793 # Okay, at this point, we have made up our minds about whether we are
 794 # going to force CFG_ENABLE_CLANG or not; save the setting if so.
 795 if [ ! -z "$CFG_ENABLE_CLANG" ]
 796 then
 797     putvar CFG_ENABLE_CLANG
 798 fi
 799
 800 if [ ! -z "$CFG_LLVM_ROOT" -a -z "$CFG_DISABLE_LLVM_VERSION_CHECK" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
 801 then
 802     step_msg "using custom LLVM at $CFG_LLVM_ROOT"
 803
 804     LLVM_CONFIG="$CFG_LLVM_ROOT/bin/llvm-config"
 805     LLVM_VERSION=$($LLVM_CONFIG --version)
 806
 807     case $LLVM_VERSION in
 808         (3.[2-6]*)
 809             msg "found ok version of LLVM: $LLVM_VERSION"
 810             ;;
 811         (*)
 812             err "bad LLVM version: $LLVM_VERSION, need >=3.0svn"
 813             ;;
 814     esac
 815 fi
 816
 817 # Even when the user overrides the choice of CC, still try to detect
 818 # clang to disable some clang-specific warnings.  We here draw a
 819 # distinction between:
 820 #
 821 #  CFG_ENABLE_CLANG : passed --enable-clang, or host "requires" clang,
 822 #  CFG_USING_CLANG : compiler (clang / gcc / $CC) looks like clang.
 823 #
 824 # This distinction is important because there are some safeguards we
 825 # would prefer to skip when merely CFG_USING_CLANG is set; but when
 826 # CFG_ENABLE_CLANG is set, that indicates that we are opting into
 827 # running such safeguards.
 828
 829 if [ ! -z "$CC" ]
 830 then
 831     msg "skipping compiler inference steps; using provided CC=$CC"
 832     CFG_CC="$CC"
 833
 834     CFG_OSX_CC_VERSION=$("$CFG_CC" --version 2>&1 | grep "clang")
 835     if [ $? -eq 0 ]
 836     then
 837         step_msg "note, user-provided CC looks like clang; CC=$CC."
 838         CFG_USING_CLANG=1
 839         putvar CFG_USING_CLANG
 840     fi
 841 else
 842     if [ ! -z "$CFG_ENABLE_CLANG" ]
 843     then
 844         if [ -z "$CFG_CLANG" ]
 845         then
 846             err "clang requested but not found"
 847         fi
 848         CFG_CC="$CFG_CLANG"
 849         CFG_USING_CLANG=1
 850         putvar CFG_USING_CLANG
 851     else
 852         CFG_CC="gcc"
 853     fi
 854 fi
 855
 856 if [ ! -z "$CFG_ENABLE_CLANG" ]
 857 then
 858     if [ -z "$CC" ] || [[ $CC == *clang ]]
 859     then
 860         CFG_CLANG_VERSION=$($CFG_CC \
 861             --version \
 862             | grep version \
 863             | sed 's/.*\(version .*\)/\1/; s/.*based on \(LLVM .*\))/\1/' \
 864             | cut -d ' ' -f 2)
 865
 866         case $CFG_CLANG_VERSION in
 867             (3.0svn | 3.0 | 3.1* | 3.2* | 3.3* | 3.4* | 3.5* | 3.6*)
 868             step_msg "found ok version of CLANG: $CFG_CLANG_VERSION"
 869             if [ -z "$CC" ]
 870             then
 871                 CFG_CC="clang"
 872                 CFG_CXX="clang++"
 873             fi
 874             ;;
 875             (*)
 876             err "bad CLANG version: $CFG_CLANG_VERSION, need >=3.0svn"
 877             ;;
 878         esac
 879     else
 880         msg "skipping CFG_ENABLE_CLANG version check; provided CC=$CC"
 881     fi
 882 fi
 883
 884 if [ ! -z "$CFG_ENABLE_CCACHE" ]
 885 then
 886     if [ -z "$CC" ]
 887     then
 888         if [ -z "$CFG_CCACHE" ]
 889         then
 890             err "ccache requested but not found"
 891         fi
 892
 893         CFG_CC="ccache $CFG_CC"
 894     fi
 895 fi
 896
 897 if [ -z "$CC" -a -z "$CFG_ENABLE_CLANG" -a -z "$CFG_GCC" ]
 898 then
 899     err "either clang or gcc is required"
 900 fi
 901
 902 # All safeguards based on $CFG_ENABLE_CLANG should occur before this
 903 # point in the script; after this point, script logic should inspect
 904 # $CFG_USING_CLANG rather than $CFG_ENABLE_CLANG.
 905
 906 # Set CFG_{CC,CXX,CPP,CFLAGS,CXXFLAGS}
 907 envopt CC
 908 envopt CXX
 909 envopt CPP
 910 envopt CFLAGS
 911 envopt CXXFLAGS
 912
 913 # a little post-processing of various config values
 914 CFG_PREFIX=${CFG_PREFIX%/}
 915 CFG_MANDIR=${CFG_MANDIR%/}
 916 CFG_HOST="$(echo $CFG_HOST | tr ',' ' ')"
 917 CFG_TARGET="$(echo $CFG_TARGET | tr ',' ' ')"
 918 CFG_SUPPORTED_TARGET=""
 919 for target_file in ${CFG_SRC_DIR}mk/cfg/*.mk; do
 920   CFG_SUPPORTED_TARGET="${CFG_SUPPORTED_TARGET} $(basename "$target_file" .mk)"
 921 done
 922
 923 # copy host-triples to target-triples so that hosts are a subset of targets
 924 V_TEMP=""
 925 for i in $CFG_HOST $CFG_TARGET;
 926 do
 927    echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
 928 done
 929 CFG_TARGET=$V_TEMP
 930
 931 # check target-specific tool-chains
 932 for i in $CFG_TARGET
 933 do
 934     L_CHECK=false
 935     for j in $CFG_SUPPORTED_TARGET
 936     do
 937         if [ $i = $j ]
 938         then
 939             L_CHECK=true
 940         fi
 941     done
 942
 943     if [ $L_CHECK = false ]
 944     then
 945         err "unsupported target triples \"$i\" found"
 946     fi
 947
 948     case $i in
 949         arm-linux-androideabi)
 950
 951             if [ ! -f $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-gcc ]
 952             then
 953                 err "NDK $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-gcc not found"
 954             fi
 955             if [ ! -f $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-g++ ]
 956             then
 957                 err "NDK $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-g++ not found"
 958             fi
 959             if [ ! -f $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-ar ]
 960             then
 961                 err "NDK $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-ar not found"
 962             fi
 963             ;;
 964
 965         arm-apple-darwin)
 966             if [ $CFG_OSTYPE != apple-darwin ]
 967             then
 968                 err "The iOS target is only supported on Mac OS X"
 969             fi
 970             ;;
 971
 972         *)
 973             ;;
 974     esac
 975 done
 976
 977 if [ ! -z "$CFG_PERF" ]
 978 then
 979     HAVE_PERF_LOGFD=`$CFG_PERF stat --log-fd 2>&1 | grep 'unknown option'`
 980     if [ -z "$HAVE_PERF_LOGFD" ];
 981     then
 982         CFG_PERF_WITH_LOGFD=1
 983         putvar CFG_PERF_WITH_LOGFD
 984     fi
 985 fi
 986
 987 step_msg "making directories"
 988
 989 for i in \
 990     doc doc/std doc/extra \
 991     dl tmp dist
 992 do
 993     make_dir $i
 994 done
 995
 996 for t in $CFG_HOST
 997 do
 998     make_dir $t/llvm
 999 done
1000
1001 for t in $CFG_HOST
1002 do
1003     make_dir $t/rustllvm
1004 done
1005
1006 for t in $CFG_TARGET
1007 do
1008   make_dir $t/rt
1009   for s in 0 1 2 3
1010   do
1011     make_dir $t/rt/stage$s
1012     make_dir $t/rt/jemalloc
1013     for i in                                          \
1014       isaac sync test \
1015       arch/i386 arch/x86_64 arch/arm arch/aarch64 arch/mips arch/powerpc
1016     do
1017       make_dir $t/rt/stage$s/$i
1018     done
1019   done
1020 done
1021
1022 for h in $CFG_HOST
1023 do
1024     for t in $CFG_TARGET
1025     do
1026         # host lib dir stage0
1027         make_dir $h/stage0/lib
1028
1029         # target bin dir stage0
1030         make_dir $h/stage0/lib/rustlib/$t/bin
1031
1032         # target lib dir stage0
1033         make_dir $h/stage0/lib/rustlib/$t/lib
1034
1035         for i in 0 1 2 3
1036         do
1037             # host bin dir
1038             make_dir $h/stage$i/bin
1039
1040             # host lib dir
1041             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE
1042
1043             # host test dir
1044             make_dir $h/stage$i/test
1045
1046             # target bin dir
1047             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/bin
1048
1049             # target lib dir
1050             make_dir $h/stage$i/$CFG_LIBDIR_RELATIVE/rustlib/$t/lib
1051         done
1052     done
1053
1054     make_dir $h/test/run-pass
1055     make_dir $h/test/run-pass-valgrind
1056     make_dir $h/test/run-pass-fulldeps
1057     make_dir $h/test/run-fail
1058     make_dir $h/test/compile-fail
1059     make_dir $h/test/parse-fail
1060     make_dir $h/test/compile-fail-fulldeps
1061     make_dir $h/test/bench
1062     make_dir $h/test/perf
1063     make_dir $h/test/pretty
1064     make_dir $h/test/debuginfo-gdb
1065     make_dir $h/test/debuginfo-lldb
1066     make_dir $h/test/codegen
1067 done
1068
1069 # Configure submodules
1070 step_msg "configuring submodules"
1071
1072 # Have to be in the top of src directory for this
1073 if [ -z $CFG_DISABLE_MANAGE_SUBMODULES ]
1074 then
1075     cd ${CFG_SRC_DIR}
1076
1077     msg "git: submodule sync"
1078     "${CFG_GIT}" submodule sync
1079
1080     msg "git: submodule init"
1081     "${CFG_GIT}" submodule init
1082
1083     # Disable submodules that we're not using
1084     if [ ! -z "${CFG_LLVM_ROOT}" ]; then
1085         msg "git: submodule deinit src/llvm"
1086         "${CFG_GIT}" submodule deinit src/llvm
1087     fi
1088     if [ ! -z "${CFG_JEMALLOC_ROOT}" ]; then
1089         msg "git: submodule deinit src/jemalloc"
1090         "${CFG_GIT}" submodule deinit src/jemalloc
1091     fi
1092
1093     msg "git: submodule update"
1094     "${CFG_GIT}" submodule update
1095     need_ok "git failed"
1096
1097     msg "git: submodule foreach sync"
1098     "${CFG_GIT}" submodule foreach --recursive 'if test -e .gitmodules; then git submodule sync; fi'
1099     need_ok "git failed"
1100
1101     msg "git: submodule foreach update"
1102     "${CFG_GIT}" submodule update --recursive
1103     need_ok "git failed"
1104
1105     # NB: this is just for the sake of getting the submodule SHA1 values
1106     # and status written into the build log.
1107     msg "git: submodule status"
1108     "${CFG_GIT}" submodule status --recursive
1109
1110     msg "git: submodule clobber"
1111     "${CFG_GIT}" submodule foreach --recursive git clean -dxf
1112     need_ok "git failed"
1113     "${CFG_GIT}" submodule foreach --recursive git checkout .
1114     need_ok "git failed"
1115
1116     cd ${CFG_BUILD_DIR}
1117 fi
1118
1119 # Configure llvm, only if necessary
1120 step_msg "looking at LLVM"
1121 CFG_LLVM_SRC_DIR=${CFG_SRC_DIR}src/llvm/
1122 for t in $CFG_HOST
1123 do
1124     do_reconfigure=1
1125
1126     if [ -z $CFG_LLVM_ROOT ]
1127     then
1128         LLVM_BUILD_DIR=${CFG_BUILD_DIR}$t/llvm
1129         if [ ! -z "$CFG_DISABLE_OPTIMIZE_LLVM" ]
1130         then
1131             LLVM_DBG_OPTS="--enable-debug-symbols --disable-optimized"
1132             # Just use LLVM straight from its build directory to
1133             # avoid 'make install' time
1134             LLVM_INST_DIR=$LLVM_BUILD_DIR/Debug
1135         else
1136             LLVM_DBG_OPTS="--enable-optimized"
1137             LLVM_INST_DIR=$LLVM_BUILD_DIR/Release
1138         fi
1139         if [ ! -z "$CFG_DISABLE_LLVM_ASSERTIONS" ]
1140         then
1141             LLVM_ASSERTION_OPTS="--disable-assertions"
1142         else
1143             LLVM_ASSERTION_OPTS="--enable-assertions"
1144             LLVM_INST_DIR=${LLVM_INST_DIR}+Asserts
1145         fi
1146     else
1147         msg "not reconfiguring LLVM, external LLVM root"
1148         # The user is using their own LLVM
1149         LLVM_BUILD_DIR=
1150         LLVM_INST_DIR=$CFG_LLVM_ROOT
1151         do_reconfigure=0
1152     fi
1153
1154
1155     if [ ${do_reconfigure} -ne 0 ]
1156     then
1157     # because git is hilarious, it might have put the module index
1158     # in a couple places.
1159         index1="${CFG_SRC_DIR}.git/modules/src/llvm/index"
1160         index2="${CFG_SRC_DIR}src/llvm/.git/index"
1161         for index in ${index1} ${index2}
1162         do
1163             config_status="${LLVM_BUILD_DIR}/config.status"
1164             if test -e ${index} -a \
1165                     -e ${config_status} -a \
1166                     ${config_status} -nt ${index}
1167             then
1168                 msg "not reconfiguring LLVM, config.status is fresh"
1169                 do_reconfigure=0
1170             fi
1171         done
1172     fi
1173
1174     if [ ${do_reconfigure} -ne 0 ]
1175     then
1176         # LLVM's configure doesn't recognize the new Windows triples yet
1177         gnu_t=$(to_gnu_triple $t)
1178
1179         msg "configuring LLVM for $gnu_t"
1180
1181         LLVM_TARGETS="--enable-targets=x86,x86_64,arm,aarch64,mips,powerpc"
1182         LLVM_BUILD="--build=$gnu_t"
1183         LLVM_HOST="--host=$gnu_t"
1184         LLVM_TARGET="--target=$gnu_t"
1185
1186         # Disable unused LLVM features
1187         LLVM_OPTS="$LLVM_DBG_OPTS $LLVM_ASSERTION_OPTS --disable-docs --enable-bindings=none"
1188         # Disable term-info, linkage of which comes in multiple forms,
1189         # making our snapshots incompatible (#9334)
1190         LLVM_OPTS="$LLVM_OPTS --disable-terminfo"
1191         # Try to have LLVM pull in as few dependencies as possible (#9397)
1192         LLVM_OPTS="$LLVM_OPTS --disable-zlib --disable-libffi"
1193
1194         # Use win32 native thread/lock apis instead of pthread wrapper.
1195         # (llvm's configure tries to find pthread first, so we have to disable it explicitly.)
1196         # Also note that pthreads works badly on mingw-w64 systems: #8996
1197         case "$CFG_BUILD" in
1198             (*-windows-*)
1199             LLVM_OPTS="$LLVM_OPTS --disable-pthreads"
1200             ;;
1201         esac
1202
1203         case "$CFG_CC" in
1204             ("ccache clang")
1205             LLVM_CXX_32="ccache clang++ -Qunused-arguments"
1206             LLVM_CC_32="ccache clang -Qunused-arguments"
1207
1208             LLVM_CXX_64="ccache clang++ -Qunused-arguments"
1209             LLVM_CC_64="ccache clang -Qunused-arguments"
1210             ;;
1211             ("clang")
1212             LLVM_CXX_32="clang++ -Qunused-arguments"
1213             LLVM_CC_32="clang -Qunused-arguments"
1214
1215             LLVM_CXX_64="clang++ -Qunused-arguments"
1216             LLVM_CC_64="clang -Qunused-arguments"
1217             ;;
1218             ("ccache gcc")
1219             LLVM_CXX_32="ccache g++"
1220             LLVM_CC_32="ccache gcc"
1221
1222             LLVM_CXX_64="ccache g++"
1223             LLVM_CC_64="ccache gcc"
1224             ;;
1225             ("gcc")
1226             LLVM_CXX_32="g++"
1227             LLVM_CC_32="gcc"
1228
1229             LLVM_CXX_64="g++"
1230             LLVM_CC_64="gcc"
1231             ;;
1232
1233             (*)
1234             msg "inferring LLVM_CXX/CC from CXX/CC = $CXX/$CC"
1235             LLVM_CXX_32="$CXX"
1236             LLVM_CC_32="$CC"
1237
1238             LLVM_CXX_64="$CXX"
1239             LLVM_CC_64="$CC"
1240             ;;
1241         esac
1242
1243         case "$CFG_CPUTYPE" in
1244             (x86*)
1245                 LLVM_CXX_32="$LLVM_CXX_32 -m32"
1246                 LLVM_CC_32="$LLVM_CC_32 -m32"
1247
1248                 LLVM_CFLAGS_32="-m32"
1249                 LLVM_CXXFLAGS_32="-m32"
1250                 LLVM_LDFLAGS_32="-m32"
1251
1252                 LLVM_CFLAGS_64=""
1253                 LLVM_CXXFLAGS_64=""
1254                 LLVM_LDFLAGS_64=""
1255
1256                 LLVM_CXX_32="$LLVM_CXX_32 -m32"
1257                 LLVM_CC_32="$LLVM_CC_32 -m32"
1258                 ;;
1259
1260             (*)
1261                 LLVM_CFLAGS_32=""
1262                 LLVM_CXXFLAGS_32=""
1263                 LLVM_LDFLAGS_32=""
1264
1265                 LLVM_CFLAGS_64=""
1266                 LLVM_CXXFLAGS_64=""
1267                 LLVM_LDFLAGS_64=""
1268                 ;;
1269         esac
1270
1271         if echo $t | grep -q x86_64
1272         then
1273             LLVM_CXX=$LLVM_CXX_64
1274             LLVM_CC=$LLVM_CC_64
1275             LLVM_CFLAGS=$LLVM_CFLAGS_64
1276             LLVM_CXXFLAGS=$LLVM_CXXFLAGS_64
1277             LLVM_LDFLAGS=$LLVM_LDFLAGS_64
1278         else
1279             LLVM_CXX=$LLVM_CXX_32
1280             LLVM_CC=$LLVM_CC_32
1281             LLVM_CFLAGS=$LLVM_CFLAGS_32
1282             LLVM_CXXFLAGS=$LLVM_CXXFLAGS_32
1283             LLVM_LDFLAGS=$LLVM_LDFLAGS_32
1284         fi
1285
1286         CXX=$LLVM_CXX
1287         CC=$LLVM_CC
1288         CFLAGS=$LLVM_CFLAGS
1289         CXXFLAGS=$LLVM_CXXFLAGS
1290         LDFLAGS=$LLVM_LDFLAGS
1291
1292         if [ -z "$CFG_DISABLE_LIBCPP" ] && [ -n "$CFG_USING_CLANG" ]; then
1293             LLVM_OPTS="$LLVM_OPTS --enable-libcpp"
1294         fi
1295
1296         LLVM_FLAGS="$LLVM_TARGETS $LLVM_OPTS $LLVM_BUILD \
1297                         $LLVM_HOST $LLVM_TARGET --with-python=$CFG_PYTHON"
1298
1299         msg "configuring LLVM with:"
1300         msg "$LLVM_FLAGS"
1301
1302         export CXX
1303         export CC
1304         export CFLAGS
1305         export CXXFLAGS
1306         export LDFLAGS
1307
1308         cd $LLVM_BUILD_DIR
1309         case $CFG_SRC_DIR in
1310             /* | [a-z]:* | [A-Z]:*)
1311                 ${CFG_LLVM_SRC_DIR}configure $LLVM_FLAGS
1312                 ;;
1313             *)
1314                 ${CFG_BUILD_DIR}${CFG_LLVM_SRC_DIR}configure \
1315                     $LLVM_FLAGS
1316                 ;;
1317         esac
1318         need_ok "LLVM configure failed"
1319
1320         cd $CFG_BUILD_DIR
1321     fi
1322
1323     # Construct variables for LLVM build and install directories for
1324     # each target. These will be named
1325     # CFG_LLVM_BUILD_DIR_${target_triple} but all the hyphens in
1326     # target_triple will be converted to underscore, because bash
1327     # variables can't contain hyphens. The makefile will then have to
1328     # convert back.
1329     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1330     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1331     eval ${CFG_LLVM_BUILD_DIR}="'$LLVM_BUILD_DIR'"
1332     eval ${CFG_LLVM_INST_DIR}="'$LLVM_INST_DIR'"
1333 done
1334
1335
1336 step_msg "writing configuration"
1337
1338 putvar CFG_SRC_DIR
1339 putvar CFG_BUILD_DIR
1340 putvar CFG_OSTYPE
1341 putvar CFG_CPUTYPE
1342 putvar CFG_CONFIGURE_ARGS
1343 putvar CFG_PREFIX
1344 putvar CFG_HOST
1345 putvar CFG_TARGET
1346 putvar CFG_LIBDIR_RELATIVE
1347 putvar CFG_DISABLE_MANAGE_SUBMODULES
1348 putvar CFG_ANDROID_CROSS_PATH
1349 putvar CFG_MANDIR
1350
1351 # Avoid spurious warnings from clang by feeding it original source on
1352 # ccache-miss rather than preprocessed input.
1353 if [ ! -z "$CFG_ENABLE_CCACHE" ] && [ ! -z "$CFG_USING_CLANG" ]
1354 then
1355     CFG_CCACHE_CPP2=1
1356     putvar CFG_CCACHE_CPP2
1357 fi
1358
1359 if [ ! -z "$CFG_ENABLE_CCACHE" ]
1360 then
1361     CFG_CCACHE_BASEDIR=${CFG_SRC_DIR}
1362     putvar CFG_CCACHE_BASEDIR
1363 fi
1364
1365
1366 if [ ! -z $BAD_PANDOC ]
1367 then
1368     CFG_PANDOC=
1369     putvar CFG_PANDOC
1370 fi
1371
1372 putvar CFG_LLVM_SRC_DIR
1373
1374 for t in $CFG_HOST
1375 do
1376     CFG_LLVM_BUILD_DIR=$(echo CFG_LLVM_BUILD_DIR_${t} | tr - _)
1377     CFG_LLVM_INST_DIR=$(echo CFG_LLVM_INST_DIR_${t} | tr - _)
1378     putvar $CFG_LLVM_BUILD_DIR
1379     putvar $CFG_LLVM_INST_DIR
1380 done
1381
1382 # Munge any paths that appear in config.mk back to posix-y
1383 cp config.tmp config.tmp.bak
1384 sed -e 's@ \([a-zA-Z]\):[/\\]@ /\1/@g;' <config.tmp.bak >config.tmp
1385 rm -f config.tmp.bak
1386
1387 msg
1388 copy_if_changed ${CFG_SRC_DIR}Makefile.in ./Makefile
1389 move_if_changed config.tmp config.mk
1390 rm -f config.tmp
1391 touch config.stamp
1392
1393 step_msg "complete"
1394 msg "run \`make help\`"
1395 msg