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