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      1 dnl === configure.ac --------------------------------------------------------===
      2 dnl                     The LLVM Compiler Infrastructure
      3 dnl
      4 dnl This file is distributed under the University of Illinois Open Source
      5 dnl License. See LICENSE.TXT for details.
      6 dnl
      7 dnl===-----------------------------------------------------------------------===
      8 dnl This is the LLVM configuration script. It is processed by the autoconf
      9 dnl program to produce a script named configure. This script contains the
     10 dnl configuration checks that LLVM needs in order to support multiple platforms.
     11 dnl This file is composed of 10 sections per the recommended organization of
     12 dnl autoconf input defined in the autoconf documentation. As this file evolves,
     13 dnl please keep the various types of checks within their sections. The sections
     14 dnl are as follows:
     15 dnl
     16 dnl SECTION 1: Initialization & Setup
     17 dnl SECTION 2: Architecture, target, and host checks
     18 dnl SECTION 3: Command line arguments for the configure script.
     19 dnl SECTION 4: Check for programs we need and that they are the right version
     20 dnl SECTION 5: Check for libraries
     21 dnl SECTION 6: Check for header files
     22 dnl SECTION 7: Check for types and structures
     23 dnl SECTION 8: Check for specific functions needed
     24 dnl SECTION 9: Additional checks, variables, etc.
     25 dnl SECTION 10: Specify the output files and generate it
     26 dnl
     27 dnl===-----------------------------------------------------------------------===
     28 dnl===
     29 dnl=== SECTION 1: Initialization & Setup
     30 dnl===
     31 dnl===-----------------------------------------------------------------------===
     32 dnl Initialize autoconf and define the package name, version number and
     33 dnl email address for reporting bugs.
     34 AC_INIT([[llvm]],[[3.0svn]],[llvmbugs (a] cs.uiuc.edu])
     35 
     36 dnl Provide a copyright substitution and ensure the copyright notice is included
     37 dnl in the output of --version option of the generated configure script.
     38 AC_SUBST(LLVM_COPYRIGHT,["Copyright (c) 2003-2011 University of Illinois at Urbana-Champaign."])
     39 AC_COPYRIGHT([Copyright (c) 2003-2011 University of Illinois at Urbana-Champaign.])
     40 
     41 dnl Indicate that we require autoconf 2.59 or later. Ths is needed because we
     42 dnl use some autoconf macros only available in 2.59.
     43 AC_PREREQ(2.59)
     44 
     45 dnl Verify that the source directory is valid. This makes sure that we are
     46 dnl configuring LLVM and not some other package (it validates --srcdir argument)
     47 AC_CONFIG_SRCDIR([lib/VMCore/Module.cpp])
     48 
     49 dnl Place all of the extra autoconf files into the config subdirectory. Tell
     50 dnl various tools where the m4 autoconf macros are.
     51 AC_CONFIG_AUX_DIR([autoconf])
     52 
     53 dnl Quit if the source directory has already been configured.
     54 dnl NOTE: This relies upon undocumented autoconf behavior.
     55 if test ${srcdir} != "." ; then
     56   if test -f ${srcdir}/include/llvm/Config/config.h ; then
     57     AC_MSG_ERROR([Already configured in ${srcdir}])
     58   fi
     59 fi
     60 
     61 dnl Configure all of the projects present in our source tree. While we could
     62 dnl just AC_CONFIG_SUBDIRS on the set of directories in projects that have a
     63 dnl configure script, that usage of the AC_CONFIG_SUBDIRS macro is deprecated.
     64 dnl Instead we match on the known projects.
     65 
     66 dnl
     67 dnl One tricky part of doing this is that some projects depend upon other
     68 dnl projects.  For example, several projects rely upon the LLVM test suite.
     69 dnl We want to configure those projects first so that their object trees are
     70 dnl created before running the configure scripts of projects that depend upon
     71 dnl them.
     72 dnl
     73 
     74 dnl Several projects use llvm-gcc, so configure that first
     75 if test -d ${srcdir}/projects/llvm-gcc ; then
     76   AC_CONFIG_SUBDIRS([projects/llvm-gcc])
     77 fi
     78 
     79 dnl Several projects use the LLVM test suite, so configure it next.
     80 if test -d ${srcdir}/projects/test-suite ; then
     81   AC_CONFIG_SUBDIRS([projects/test-suite])
     82 fi
     83 
     84 dnl llvm-test is the old name of the test-suite, kept here for backwards
     85 dnl compatibility
     86 if test -d ${srcdir}/projects/llvm-test ; then
     87   AC_CONFIG_SUBDIRS([projects/llvm-test])
     88 fi
     89 
     90 dnl Some projects use poolalloc; configure that next
     91 if test -d ${srcdir}/projects/poolalloc ; then
     92   AC_CONFIG_SUBDIRS([projects/poolalloc])
     93 fi
     94 
     95 if test -d ${srcdir}/projects/llvm-poolalloc ; then
     96   AC_CONFIG_SUBDIRS([projects/llvm-poolalloc])
     97 fi
     98 
     99 dnl Check for all other projects
    100 for i in `ls ${srcdir}/projects`
    101 do
    102   if test -d ${srcdir}/projects/${i} ; then
    103     case ${i} in
    104       sample)       AC_CONFIG_SUBDIRS([projects/sample])    ;;
    105       privbracket)  AC_CONFIG_SUBDIRS([projects/privbracket]) ;;
    106       llvm-stacker) AC_CONFIG_SUBDIRS([projects/llvm-stacker]) ;;
    107       llvm-reopt)   AC_CONFIG_SUBDIRS([projects/llvm-reopt]);;
    108       llvm-java)    AC_CONFIG_SUBDIRS([projects/llvm-java]) ;;
    109       llvm-tv)      AC_CONFIG_SUBDIRS([projects/llvm-tv])   ;;
    110       safecode)     AC_CONFIG_SUBDIRS([projects/safecode]) ;;
    111       llvm-kernel)  AC_CONFIG_SUBDIRS([projects/llvm-kernel]) ;;
    112       llvm-gcc)       ;;
    113       test-suite)     ;;
    114       llvm-test)      ;;
    115       poolalloc)      ;;
    116       llvm-poolalloc) ;;
    117       *)
    118         AC_MSG_WARN([Unknown project (${i}) won't be configured automatically])
    119         ;;
    120     esac
    121   fi
    122 done
    123 
    124 dnl Disable the build of polly, even if it is checked out into tools/polly.
    125 AC_ARG_ENABLE(polly,
    126               AS_HELP_STRING([--enable-polly],
    127                              [Use polly if available (default is YES)]),,
    128                              enableval=default)
    129 case "$enableval" in
    130   yes) AC_SUBST(ENABLE_POLLY,[1]) ;;
    131   no)  AC_SUBST(ENABLE_POLLY,[0]) ;;
    132   default) AC_SUBST(ENABLE_POLLY,[1]) ;;
    133   *) AC_MSG_ERROR([Invalid setting for --enable-polly. Use "yes" or "no"]) ;;
    134 esac
    135 
    136 
    137 dnl Check if polly is checked out into tools/polly and configure it if
    138 dnl available.
    139 if (test -d ${srcdir}/tools/polly) && (test $ENABLE_POLLY -eq 1) ; then
    140   AC_SUBST(LLVM_HAS_POLLY,1)
    141   AC_CONFIG_SUBDIRS([tools/polly])
    142 fi
    143 
    144 dnl===-----------------------------------------------------------------------===
    145 dnl===
    146 dnl=== SECTION 2: Architecture, target, and host checks
    147 dnl===
    148 dnl===-----------------------------------------------------------------------===
    149 
    150 dnl Check the target for which we're compiling and the host that will do the
    151 dnl compilations. This will tell us which LLVM compiler will be used for
    152 dnl compiling SSA into object code. This needs to be done early because
    153 dnl following tests depend on it.
    154 AC_CANONICAL_TARGET
    155 
    156 dnl Determine the platform type and cache its value. This helps us configure
    157 dnl the System library to the correct build platform.
    158 AC_CACHE_CHECK([type of operating system we're going to host on],
    159                [llvm_cv_os_type],
    160 [case $host in
    161   *-*-aix*)
    162     llvm_cv_link_all_option="-Wl,--whole-archive"
    163     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    164     llvm_cv_os_type="AIX"
    165     llvm_cv_platform_type="Unix" ;;
    166   *-*-irix*)
    167     llvm_cv_link_all_option="-Wl,--whole-archive"
    168     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    169     llvm_cv_os_type="IRIX"
    170     llvm_cv_platform_type="Unix" ;;
    171   *-*-cygwin*)
    172     llvm_cv_link_all_option="-Wl,--whole-archive"
    173     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    174     llvm_cv_os_type="Cygwin"
    175     llvm_cv_platform_type="Unix" ;;
    176   *-*-darwin*)
    177     llvm_cv_link_all_option="-Wl,-all_load"
    178     llvm_cv_no_link_all_option="-Wl,-noall_load"
    179     llvm_cv_os_type="Darwin"
    180     llvm_cv_platform_type="Unix" ;;
    181   *-*-minix*)
    182     llvm_cv_link_all_option="-Wl,-all_load"
    183     llvm_cv_no_link_all_option="-Wl,-noall_load"
    184     llvm_cv_os_type="Minix"
    185     llvm_cv_platform_type="Unix" ;;
    186   *-*-freebsd*)
    187     llvm_cv_link_all_option="-Wl,--whole-archive"
    188     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    189     llvm_cv_os_type="FreeBSD"
    190     llvm_cv_platform_type="Unix" ;;
    191   *-*-openbsd*)
    192     llvm_cv_link_all_option="-Wl,--whole-archive"
    193     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    194     llvm_cv_os_type="OpenBSD"
    195     llvm_cv_platform_type="Unix" ;;
    196   *-*-netbsd*)
    197     llvm_cv_link_all_option="-Wl,--whole-archive"
    198     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    199     llvm_cv_os_type="NetBSD"
    200     llvm_cv_platform_type="Unix" ;;
    201   *-*-dragonfly*)
    202     llvm_cv_link_all_option="-Wl,--whole-archive"
    203     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    204     llvm_cv_os_type="DragonFly"
    205     llvm_cv_platform_type="Unix" ;;
    206   *-*-hpux*)
    207     llvm_cv_link_all_option="-Wl,--whole-archive"
    208     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    209     llvm_cv_os_type="HP-UX"
    210     llvm_cv_platform_type="Unix" ;;
    211   *-*-interix*)
    212     llvm_cv_link_all_option="-Wl,--whole-archive"
    213     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    214     llvm_cv_os_type="Interix"
    215     llvm_cv_platform_type="Unix" ;;
    216   *-*-linux*)
    217     llvm_cv_link_all_option="-Wl,--whole-archive"
    218     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    219     llvm_cv_os_type="Linux"
    220     llvm_cv_platform_type="Unix" ;;
    221   *-*-solaris*)
    222     llvm_cv_link_all_option="-Wl,-z,allextract"
    223     llvm_cv_no_link_all_option="-Wl,-z,defaultextract"
    224     llvm_cv_os_type="SunOS"
    225     llvm_cv_platform_type="Unix" ;;
    226   *-*-auroraux*)
    227     llvm_cv_link_all_option="-Wl,-z,allextract"
    228     llvm_cv_link_all_option="-Wl,-z,defaultextract"
    229     llvm_cv_os_type="AuroraUX"
    230     llvm_cv_platform_type="Unix" ;;
    231   *-*-win32*)
    232     llvm_cv_link_all_option="-Wl,--whole-archive"
    233     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    234     llvm_cv_os_type="Win32"
    235     llvm_cv_platform_type="Win32" ;;
    236   *-*-mingw*)
    237     llvm_cv_link_all_option="-Wl,--whole-archive"
    238     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    239     llvm_cv_os_type="MingW"
    240     llvm_cv_platform_type="Win32" ;;
    241   *-*-haiku*)
    242     llvm_cv_link_all_option="-Wl,--whole-archive"
    243     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    244     llvm_cv_os_type="Haiku"
    245     llvm_cv_platform_type="Unix" ;;
    246   *-unknown-eabi*)
    247     llvm_cv_link_all_option="-Wl,--whole-archive"
    248     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    249     llvm_cv_os_type="Freestanding"
    250     llvm_cv_platform_type="Unix" ;;
    251   *-unknown-elf*)
    252     llvm_cv_link_all_option="-Wl,--whole-archive"
    253     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    254     llvm_cv_os_type="Freestanding"
    255     llvm_cv_platform_type="Unix" ;;
    256   *)
    257     llvm_cv_link_all_option=""
    258     llvm_cv_no_link_all_option=""
    259     llvm_cv_os_type="Unknown"
    260     llvm_cv_platform_type="Unknown" ;;
    261 esac])
    262 
    263 AC_CACHE_CHECK([type of operating system we're going to target],
    264                [llvm_cv_target_os_type],
    265 [case $target in
    266   *-*-aix*)
    267     llvm_cv_target_os_type="AIX" ;;
    268   *-*-irix*)
    269     llvm_cv_target_os_type="IRIX" ;;
    270   *-*-cygwin*)
    271     llvm_cv_target_os_type="Cygwin" ;;
    272   *-*-darwin*)
    273     llvm_cv_target_os_type="Darwin" ;;
    274   *-*-minix*)
    275     llvm_cv_target_os_type="Minix" ;;
    276   *-*-freebsd*)
    277     llvm_cv_target_os_type="FreeBSD" ;;
    278   *-*-openbsd*)
    279     llvm_cv_target_os_type="OpenBSD" ;;
    280   *-*-netbsd*)
    281     llvm_cv_target_os_type="NetBSD" ;;
    282   *-*-dragonfly*)
    283     llvm_cv_target_os_type="DragonFly" ;;
    284   *-*-hpux*)
    285     llvm_cv_target_os_type="HP-UX" ;;
    286   *-*-interix*)
    287     llvm_cv_target_os_type="Interix" ;;
    288   *-*-linux*)
    289     llvm_cv_target_os_type="Linux" ;;
    290   *-*-solaris*)
    291     llvm_cv_target_os_type="SunOS" ;;
    292   *-*-auroraux*)
    293     llvm_cv_target_os_type="AuroraUX" ;;
    294   *-*-win32*)
    295     llvm_cv_target_os_type="Win32" ;;
    296   *-*-mingw*)
    297     llvm_cv_target_os_type="MingW" ;;
    298   *-*-haiku*)
    299     llvm_cv_target_os_type="Haiku" ;;
    300   *-*-rtems*)
    301     llvm_cv_target_os_type="RTEMS" ;;
    302   *-unknown-eabi*)
    303     llvm_cv_target_os_type="Freestanding" ;;
    304   *)
    305     llvm_cv_target_os_type="Unknown" ;;
    306 esac])
    307 
    308 dnl Make sure we aren't attempting to configure for an unknown system
    309 if test "$llvm_cv_os_type" = "Unknown" ; then
    310   AC_MSG_ERROR([Operating system is unknown, configure can't continue])
    311 fi
    312 
    313 dnl Set the "OS" Makefile variable based on the platform type so the
    314 dnl makefile can configure itself to specific build hosts
    315 AC_SUBST(OS,$llvm_cv_os_type)
    316 AC_SUBST(HOST_OS,$llvm_cv_os_type)
    317 AC_SUBST(TARGET_OS,$llvm_cv_target_os_type)
    318 
    319 dnl Set the LINKALL and NOLINKALL Makefile variables based on the platform
    320 AC_SUBST(LINKALL,$llvm_cv_link_all_option)
    321 AC_SUBST(NOLINKALL,$llvm_cv_no_link_all_option)
    322 
    323 dnl Set the "LLVM_ON_*" variables based on llvm_cv_platform_type
    324 dnl This is used by lib/Support to determine the basic kind of implementation
    325 dnl to use.
    326 case $llvm_cv_platform_type in
    327   Unix)
    328     AC_DEFINE([LLVM_ON_UNIX],[1],[Define if this is Unixish platform])
    329     AC_SUBST(LLVM_ON_UNIX,[1])
    330     AC_SUBST(LLVM_ON_WIN32,[0])
    331     ;;
    332   Win32)
    333     AC_DEFINE([LLVM_ON_WIN32],[1],[Define if this is Win32ish platform])
    334     AC_SUBST(LLVM_ON_UNIX,[0])
    335     AC_SUBST(LLVM_ON_WIN32,[1])
    336     ;;
    337 esac
    338 
    339 dnl Determine what our target architecture is and configure accordingly.
    340 dnl This will allow Makefiles to make a distinction between the hardware and
    341 dnl the OS.
    342 AC_CACHE_CHECK([target architecture],[llvm_cv_target_arch],
    343 [case $target in
    344   i?86-*)                 llvm_cv_target_arch="x86" ;;
    345   amd64-* | x86_64-*)     llvm_cv_target_arch="x86_64" ;;
    346   sparc*-*)               llvm_cv_target_arch="Sparc" ;;
    347   powerpc*-*)             llvm_cv_target_arch="PowerPC" ;;
    348   alpha*-*)               llvm_cv_target_arch="Alpha" ;;
    349   arm*-*)                 llvm_cv_target_arch="ARM" ;;
    350   mips-*)                 llvm_cv_target_arch="Mips" ;;
    351   xcore-*)                llvm_cv_target_arch="XCore" ;;
    352   msp430-*)               llvm_cv_target_arch="MSP430" ;;
    353   s390x-*)                llvm_cv_target_arch="SystemZ" ;;
    354   bfin-*)                 llvm_cv_target_arch="Blackfin" ;;
    355   mblaze-*)               llvm_cv_target_arch="MBlaze" ;;
    356   ptx-*)                  llvm_cv_target_arch="PTX" ;;
    357   *)                      llvm_cv_target_arch="Unknown" ;;
    358 esac])
    359 
    360 if test "$llvm_cv_target_arch" = "Unknown" ; then
    361   AC_MSG_WARN([Configuring LLVM for an unknown target archicture])
    362 fi
    363 
    364 # Determine the LLVM native architecture for the target
    365 case "$llvm_cv_target_arch" in
    366     x86)     LLVM_NATIVE_ARCH="X86" ;;
    367     x86_64)  LLVM_NATIVE_ARCH="X86" ;;
    368     *)       LLVM_NATIVE_ARCH="$llvm_cv_target_arch" ;;
    369 esac
    370 
    371 dnl Define a substitution, ARCH, for the target architecture
    372 AC_SUBST(ARCH,$llvm_cv_target_arch)
    373 
    374 dnl Check for the endianness of the target
    375 AC_C_BIGENDIAN(AC_SUBST([ENDIAN],[big]),AC_SUBST([ENDIAN],[little]))
    376 
    377 dnl Check for build platform executable suffix if we're crosscompiling
    378 if test "$cross_compiling" = yes; then
    379   AC_SUBST(LLVM_CROSS_COMPILING, [1])
    380   AC_BUILD_EXEEXT
    381   ac_build_prefix=${build_alias}-
    382   AC_CHECK_PROG(BUILD_CXX, ${ac_build_prefix}g++, ${ac_build_prefix}g++)
    383   if test -z "$BUILD_CXX"; then
    384      AC_CHECK_PROG(BUILD_CXX, g++, g++)
    385      if test -z "$BUILD_CXX"; then
    386        AC_CHECK_PROG(BUILD_CXX, c++, c++, , , /usr/ucb/c++)
    387      fi
    388   fi
    389 else
    390   AC_SUBST(LLVM_CROSS_COMPILING, [0])
    391 fi
    392 
    393 dnl Check to see if there's a .svn or .git directory indicating that this
    394 dnl build is being done from a checkout. This sets up several defaults for
    395 dnl the command line switches. When we build with a checkout directory,
    396 dnl we get a debug with assertions turned on. Without, we assume a source
    397 dnl release and we get an optimized build without assertions.
    398 dnl See --enable-optimized and --enable-assertions below
    399 if test -d ".svn" -o -d "${srcdir}/.svn" -o -d ".git" -o -d "${srcdir}/.git"; then
    400   cvsbuild="yes"
    401   optimize="no"
    402   AC_SUBST(CVSBUILD,[[CVSBUILD=1]])
    403 else
    404   cvsbuild="no"
    405   optimize="yes"
    406 fi
    407 
    408 dnl===-----------------------------------------------------------------------===
    409 dnl===
    410 dnl=== SECTION 3: Command line arguments for the configure script.
    411 dnl===
    412 dnl===-----------------------------------------------------------------------===
    413 
    414 dnl --enable-optimized : check whether they want to do an optimized build:
    415 AC_ARG_ENABLE(optimized, AS_HELP_STRING(
    416  --enable-optimized,[Compile with optimizations enabled (default is NO)]),,enableval=$optimize)
    417 if test ${enableval} = "no" ; then
    418   AC_SUBST(ENABLE_OPTIMIZED,[[]])
    419 else
    420   AC_SUBST(ENABLE_OPTIMIZED,[[ENABLE_OPTIMIZED=1]])
    421 fi
    422 
    423 dnl --enable-profiling : check whether they want to do a profile build:
    424 AC_ARG_ENABLE(profiling, AS_HELP_STRING(
    425  --enable-profiling,[Compile with profiling enabled (default is NO)]),,enableval="no")
    426 if test ${enableval} = "no" ; then
    427   AC_SUBST(ENABLE_PROFILING,[[]])
    428 else
    429   AC_SUBST(ENABLE_PROFILING,[[ENABLE_PROFILING=1]])
    430 fi
    431 
    432 dnl --enable-assertions : check whether they want to turn on assertions or not:
    433 AC_ARG_ENABLE(assertions,AS_HELP_STRING(
    434   --enable-assertions,[Compile with assertion checks enabled (default is YES)]),, enableval="yes")
    435 if test ${enableval} = "yes" ; then
    436   AC_SUBST(DISABLE_ASSERTIONS,[[]])
    437 else
    438   AC_SUBST(DISABLE_ASSERTIONS,[[DISABLE_ASSERTIONS=1]])
    439 fi
    440 
    441 dnl --enable-expensive-checks : check whether they want to turn on expensive debug checks:
    442 AC_ARG_ENABLE(expensive-checks,AS_HELP_STRING(
    443   --enable-expensive-checks,[Compile with expensive debug checks enabled (default is NO)]),, enableval="no")
    444 if test ${enableval} = "yes" ; then
    445   AC_SUBST(ENABLE_EXPENSIVE_CHECKS,[[ENABLE_EXPENSIVE_CHECKS=1]])
    446   AC_SUBST(EXPENSIVE_CHECKS,[[yes]])
    447 else
    448   AC_SUBST(ENABLE_EXPENSIVE_CHECKS,[[]])
    449   AC_SUBST(EXPENSIVE_CHECKS,[[no]])
    450 fi
    451 
    452 dnl --enable-debug-runtime : should runtime libraries have debug symbols?
    453 AC_ARG_ENABLE(debug-runtime,
    454    AS_HELP_STRING(--enable-debug-runtime,[Build runtime libs with debug symbols (default is NO)]),,enableval=no)
    455 if test ${enableval} = "no" ; then
    456   AC_SUBST(DEBUG_RUNTIME,[[]])
    457 else
    458   AC_SUBST(DEBUG_RUNTIME,[[DEBUG_RUNTIME=1]])
    459 fi
    460 
    461 dnl --enable-debug-symbols : should even optimized compiler libraries
    462 dnl have debug symbols?
    463 AC_ARG_ENABLE(debug-symbols,
    464    AS_HELP_STRING(--enable-debug-symbols,[Build compiler with debug symbols (default is NO if optimization is on and YES if it's off)]),,enableval=no)
    465 if test ${enableval} = "no" ; then
    466   AC_SUBST(DEBUG_SYMBOLS,[[]])
    467 else
    468   AC_SUBST(DEBUG_SYMBOLS,[[DEBUG_SYMBOLS=1]])
    469 fi
    470 
    471 dnl --enable-jit: check whether they want to enable the jit
    472 AC_ARG_ENABLE(jit,
    473   AS_HELP_STRING(--enable-jit,
    474                  [Enable Just In Time Compiling (default is YES)]),,
    475   enableval=default)
    476 if test ${enableval} = "no"
    477 then
    478   AC_SUBST(JIT,[[]])
    479 else
    480   case "$llvm_cv_target_arch" in
    481     x86)         AC_SUBST(TARGET_HAS_JIT,1) ;;
    482     Sparc)       AC_SUBST(TARGET_HAS_JIT,0) ;;
    483     PowerPC)     AC_SUBST(TARGET_HAS_JIT,1) ;;
    484     x86_64)      AC_SUBST(TARGET_HAS_JIT,1) ;;
    485     Alpha)       AC_SUBST(TARGET_HAS_JIT,0) ;;
    486     ARM)         AC_SUBST(TARGET_HAS_JIT,1) ;;
    487     Mips)        AC_SUBST(TARGET_HAS_JIT,0) ;;
    488     XCore)       AC_SUBST(TARGET_HAS_JIT,0) ;;
    489     MSP430)      AC_SUBST(TARGET_HAS_JIT,0) ;;
    490     SystemZ)     AC_SUBST(TARGET_HAS_JIT,0) ;;
    491     Blackfin)    AC_SUBST(TARGET_HAS_JIT,0) ;;
    492     MBlaze)      AC_SUBST(TARGET_HAS_JIT,0) ;;
    493     PTX)         AC_SUBST(TARGET_HAS_JIT,0) ;;
    494     *)           AC_SUBST(TARGET_HAS_JIT,0) ;;
    495   esac
    496 fi
    497 
    498 dnl Allow enablement of building and installing docs
    499 AC_ARG_ENABLE(docs,
    500               AS_HELP_STRING([--enable-docs],
    501                              [Build documents (default is YES)]),,
    502                              enableval=default)
    503 case "$enableval" in
    504   yes) AC_SUBST(ENABLE_DOCS,[1]) ;;
    505   no)  AC_SUBST(ENABLE_DOCS,[0]) ;;
    506   default) AC_SUBST(ENABLE_DOCS,[1]) ;;
    507   *) AC_MSG_ERROR([Invalid setting for --enable-docs. Use "yes" or "no"]) ;;
    508 esac
    509 
    510 dnl Allow enablement of doxygen generated documentation
    511 AC_ARG_ENABLE(doxygen,
    512               AS_HELP_STRING([--enable-doxygen],
    513                              [Build doxygen documentation (default is NO)]),,
    514                              enableval=default)
    515 case "$enableval" in
    516   yes) AC_SUBST(ENABLE_DOXYGEN,[1]) ;;
    517   no)  AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
    518   default) AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
    519   *) AC_MSG_ERROR([Invalid setting for --enable-doxygen. Use "yes" or "no"]) ;;
    520 esac
    521 
    522 dnl Allow disablement of threads
    523 AC_ARG_ENABLE(threads,
    524               AS_HELP_STRING([--enable-threads],
    525                              [Use threads if available (default is YES)]),,
    526                              enableval=default)
    527 case "$enableval" in
    528   yes) AC_SUBST(ENABLE_THREADS,[1]) ;;
    529   no)  AC_SUBST(ENABLE_THREADS,[0]) ;;
    530   default) AC_SUBST(ENABLE_THREADS,[1]) ;;
    531   *) AC_MSG_ERROR([Invalid setting for --enable-threads. Use "yes" or "no"]) ;;
    532 esac
    533 AC_DEFINE_UNQUOTED([ENABLE_THREADS],$ENABLE_THREADS,[Define if threads enabled])
    534 
    535 dnl Allow disablement of pthread.h
    536 AC_ARG_ENABLE(pthreads,
    537               AS_HELP_STRING([--enable-pthreads],
    538                              [Use pthreads if available (default is YES)]),,
    539                              enableval=default)
    540 case "$enableval" in
    541   yes) AC_SUBST(ENABLE_PTHREADS,[1]) ;;
    542   no)  AC_SUBST(ENABLE_PTHREADS,[0]) ;;
    543   default) AC_SUBST(ENABLE_PTHREADS,[1]) ;;
    544   *) AC_MSG_ERROR([Invalid setting for --enable-pthreads. Use "yes" or "no"]) ;;
    545 esac
    546 
    547 dnl Allow building without position independent code
    548 AC_ARG_ENABLE(pic,
    549   AS_HELP_STRING([--enable-pic],
    550                  [Build LLVM with Position Independent Code (default is YES)]),,
    551                  enableval=default)
    552 case "$enableval" in
    553   yes) AC_SUBST(ENABLE_PIC,[1]) ;;
    554   no)  AC_SUBST(ENABLE_PIC,[0]) ;;
    555   default) AC_SUBST(ENABLE_PIC,[1]) ;;
    556   *) AC_MSG_ERROR([Invalid setting for --enable-pic. Use "yes" or "no"]) ;;
    557 esac
    558 AC_DEFINE_UNQUOTED([ENABLE_PIC],$ENABLE_PIC,
    559                    [Define if position independent code is enabled])
    560 
    561 dnl Allow building a shared library and linking tools against it.
    562 AC_ARG_ENABLE(shared,
    563   AS_HELP_STRING([--enable-shared],
    564                  [Build a shared library and link tools against it (default is NO)]),,
    565                  enableval=default)
    566 case "$enableval" in
    567   yes) AC_SUBST(ENABLE_SHARED,[1]) ;;
    568   no)  AC_SUBST(ENABLE_SHARED,[0]) ;;
    569   default) AC_SUBST(ENABLE_SHARED,[0]) ;;
    570   *) AC_MSG_ERROR([Invalid setting for --enable-shared. Use "yes" or "no"]) ;;
    571 esac
    572 
    573 dnl Allow libstdc++ is embedded in LLVM.dll.
    574 AC_ARG_ENABLE(embed-stdcxx,
    575   AS_HELP_STRING([--enable-embed-stdcxx],
    576                  [Build a shared library with embedded libstdc++ for Win32 DLL (default is YES)]),,
    577                  enableval=default)
    578 case "$enableval" in
    579   yes) AC_SUBST(ENABLE_EMBED_STDCXX,[1]) ;;
    580   no)  AC_SUBST(ENABLE_EMBED_STDCXX,[0]) ;;
    581   default) AC_SUBST(ENABLE_EMBED_STDCXX,[1]) ;;
    582   *) AC_MSG_ERROR([Invalid setting for --enable-embed-stdcxx. Use "yes" or "no"]) ;;
    583 esac
    584 
    585 dnl Enable embedding timestamp information into build.
    586 AC_ARG_ENABLE(timestamps,
    587   AS_HELP_STRING([--enable-timestamps],
    588                  [Enable embedding timestamp information in build (default is YES)]),,
    589                  enableval=default)
    590 case "$enableval" in
    591   yes) AC_SUBST(ENABLE_TIMESTAMPS,[1]) ;;
    592   no)  AC_SUBST(ENABLE_TIMESTAMPS,[0]) ;;
    593   default) AC_SUBST(ENABLE_TIMESTAMPS,[1]) ;;
    594   *) AC_MSG_ERROR([Invalid setting for --enable-timestamps. Use "yes" or "no"]) ;;
    595 esac
    596 AC_DEFINE_UNQUOTED([ENABLE_TIMESTAMPS],$ENABLE_TIMESTAMPS,
    597                    [Define if timestamp information (e.g., __DATE___) is allowed])
    598 
    599 dnl Allow specific targets to be specified for building (or not)
    600 TARGETS_TO_BUILD=""
    601 AC_ARG_ENABLE([targets],AS_HELP_STRING([--enable-targets],
    602     [Build specific host targets: all or target1,target2,... Valid targets are:
    603      host, x86, x86_64, sparc, powerpc, alpha, arm, mips, spu,
    604      xcore, msp430, systemz, blackfin, ptx, cbe, and cpp (default=all)]),,
    605     enableval=all)
    606 if test "$enableval" = host-only ; then
    607   enableval=host
    608 fi
    609 case "$enableval" in
    610   all) TARGETS_TO_BUILD="X86 Sparc PowerPC Alpha ARM Mips CellSPU XCore MSP430 SystemZ Blackfin CBackend CppBackend MBlaze PTX" ;;
    611   *)for a_target in `echo $enableval|sed -e 's/,/ /g' ` ; do
    612       case "$a_target" in
    613         x86)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
    614         x86_64)   TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
    615         sparc)    TARGETS_TO_BUILD="Sparc $TARGETS_TO_BUILD" ;;
    616         powerpc)  TARGETS_TO_BUILD="PowerPC $TARGETS_TO_BUILD" ;;
    617         alpha)    TARGETS_TO_BUILD="Alpha $TARGETS_TO_BUILD" ;;
    618         arm)      TARGETS_TO_BUILD="ARM $TARGETS_TO_BUILD" ;;
    619         mips)     TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
    620         spu)      TARGETS_TO_BUILD="CellSPU $TARGETS_TO_BUILD" ;;
    621         xcore)    TARGETS_TO_BUILD="XCore $TARGETS_TO_BUILD" ;;
    622         msp430)   TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
    623         systemz)  TARGETS_TO_BUILD="SystemZ $TARGETS_TO_BUILD" ;;
    624         blackfin) TARGETS_TO_BUILD="Blackfin $TARGETS_TO_BUILD" ;;
    625         cbe)      TARGETS_TO_BUILD="CBackend $TARGETS_TO_BUILD" ;;
    626         cpp)      TARGETS_TO_BUILD="CppBackend $TARGETS_TO_BUILD" ;;
    627         mblaze)   TARGETS_TO_BUILD="MBlaze $TARGETS_TO_BUILD" ;;
    628         ptx)      TARGETS_TO_BUILD="PTX $TARGETS_TO_BUILD" ;;
    629         host) case "$llvm_cv_target_arch" in
    630             x86)         TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
    631             x86_64)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
    632             Sparc)       TARGETS_TO_BUILD="Sparc $TARGETS_TO_BUILD" ;;
    633             PowerPC)     TARGETS_TO_BUILD="PowerPC $TARGETS_TO_BUILD" ;;
    634             Alpha)       TARGETS_TO_BUILD="Alpha $TARGETS_TO_BUILD" ;;
    635             ARM)         TARGETS_TO_BUILD="ARM $TARGETS_TO_BUILD" ;;
    636             Mips)        TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
    637             MBlaze)      TARGETS_TO_BUILD="MBlaze $TARGETS_TO_BUILD" ;;
    638             CellSPU|SPU) TARGETS_TO_BUILD="CellSPU $TARGETS_TO_BUILD" ;;
    639             XCore)       TARGETS_TO_BUILD="XCore $TARGETS_TO_BUILD" ;;
    640             MSP430)      TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
    641             s390x)       TARGETS_TO_BUILD="SystemZ $TARGETS_TO_BUILD" ;;
    642             Blackfin)    TARGETS_TO_BUILD="Blackfin $TARGETS_TO_BUILD" ;;
    643             PTX)         TARGETS_TO_BUILD="PTX $TARGETS_TO_BUILD" ;;
    644             *)       AC_MSG_ERROR([Can not set target to build]) ;;
    645           esac ;;
    646         *) AC_MSG_ERROR([Unrecognized target $a_target]) ;;
    647       esac
    648   done
    649   ;;
    650 esac
    651 AC_SUBST(TARGETS_TO_BUILD,$TARGETS_TO_BUILD)
    652 
    653 # Determine whether we are building LLVM support for the native architecture.
    654 # If so, define LLVM_NATIVE_ARCH to that LLVM target.
    655 for a_target in $TARGETS_TO_BUILD; do
    656   if test "$a_target" = "$LLVM_NATIVE_ARCH"; then
    657     AC_DEFINE_UNQUOTED(LLVM_NATIVE_ARCH, $LLVM_NATIVE_ARCH,
    658       [LLVM architecture name for the native architecture, if available])
    659     LLVM_NATIVE_TARGET="LLVMInitialize${LLVM_NATIVE_ARCH}Target"
    660     LLVM_NATIVE_TARGETINFO="LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo"
    661     LLVM_NATIVE_MCASMINFO="LLVMInitialize${LLVM_NATIVE_ARCH}MCAsmInfo"
    662     LLVM_NATIVE_MCCODEGENINFO="LLVMInitialize${LLVM_NATIVE_ARCH}MCCodeGenInfo"
    663     LLVM_NATIVE_ASMPRINTER="LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter"
    664     if test -f ${srcdir}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/Makefile ; then
    665       LLVM_NATIVE_ASMPARSER="LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser"
    666     fi
    667     AC_DEFINE_UNQUOTED(LLVM_NATIVE_TARGET, $LLVM_NATIVE_TARGET,
    668       [LLVM name for the native Target init function, if available])
    669     AC_DEFINE_UNQUOTED(LLVM_NATIVE_TARGETINFO, $LLVM_NATIVE_TARGETINFO,
    670       [LLVM name for the native TargetInfo init function, if available])
    671     AC_DEFINE_UNQUOTED(LLVM_NATIVE_MCASMINFO, $LLVM_NATIVE_MCASMINFO,
    672       [LLVM name for the native MCAsmInfo init function, if available])
    673     AC_DEFINE_UNQUOTED(LLVM_NATIVE_MCCODEGENINFO, $LLVM_NATIVE_MCCODEGENINFO,
    674       [LLVM name for the native MCCodeGenInfo init function, if available])
    675     AC_DEFINE_UNQUOTED(LLVM_NATIVE_ASMPRINTER, $LLVM_NATIVE_ASMPRINTER,
    676       [LLVM name for the native AsmPrinter init function, if available])
    677     if test -f ${srcdir}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/Makefile ; then
    678       AC_DEFINE_UNQUOTED(LLVM_NATIVE_ASMPARSER, $LLVM_NATIVE_ASMPARSER,
    679        [LLVM name for the native AsmParser init function, if available])
    680     fi
    681   fi
    682 done
    683 
    684 # Build the LLVM_TARGET and LLVM_... macros for Targets.def and the individual
    685 # target feature def files.
    686 LLVM_ENUM_TARGETS=""
    687 LLVM_ENUM_ASM_PRINTERS=""
    688 LLVM_ENUM_ASM_PARSERS=""
    689 LLVM_ENUM_DISASSEMBLERS=""
    690 for target_to_build in $TARGETS_TO_BUILD; do
    691   LLVM_ENUM_TARGETS="LLVM_TARGET($target_to_build) $LLVM_ENUM_TARGETS"
    692   if test -f ${srcdir}/lib/Target/${target_to_build}/*AsmPrinter.cpp ; then
    693     LLVM_ENUM_ASM_PRINTERS="LLVM_ASM_PRINTER($target_to_build) $LLVM_ENUM_ASM_PRINTERS";
    694   fi
    695   if test -f ${srcdir}/lib/Target/${target_to_build}/AsmParser/Makefile ; then
    696     LLVM_ENUM_ASM_PARSERS="LLVM_ASM_PARSER($target_to_build) $LLVM_ENUM_ASM_PARSERS";
    697   fi
    698   if test -f ${srcdir}/lib/Target/${target_to_build}/Disassembler/Makefile ; then
    699     LLVM_ENUM_DISASSEMBLERS="LLVM_DISASSEMBLER($target_to_build) $LLVM_ENUM_DISASSEMBLERS";
    700   fi
    701 done
    702 AC_SUBST(LLVM_ENUM_TARGETS)
    703 AC_SUBST(LLVM_ENUM_ASM_PRINTERS)
    704 AC_SUBST(LLVM_ENUM_ASM_PARSERS)
    705 AC_SUBST(LLVM_ENUM_DISASSEMBLERS)
    706 
    707 dnl Prevent the CBackend from using printf("%a") for floating point so older
    708 dnl C compilers that cannot deal with the 0x0p+0 hex floating point format
    709 dnl can still compile the CBE's output
    710 AC_ARG_ENABLE([cbe-printf-a],AS_HELP_STRING([--enable-cbe-printf-a],
    711   [Enable C Backend output with hex floating point via %a  (default is YES)]),,
    712   enableval=default)
    713 case "$enableval" in
    714   yes) AC_SUBST(ENABLE_CBE_PRINTF_A,[1]) ;;
    715   no)  AC_SUBST(ENABLE_CBE_PRINTF_A,[0]) ;;
    716   default)  AC_SUBST(ENABLE_CBE_PRINTF_A,[1]) ;;
    717   *) AC_MSG_ERROR([Invalid setting for --enable-cbe-printf-a. Use "yes" or "no"]) ;;
    718 esac
    719 AC_DEFINE_UNQUOTED([ENABLE_CBE_PRINTF_A],$ENABLE_CBE_PRINTF_A,
    720                    [Define if CBE is enabled for printf %a output])
    721 
    722 dnl Allow a specific llvm-gcc/llvm-g++ pair to be used with this LLVM config.
    723 AC_ARG_WITH(llvmgccdir,
    724   AS_HELP_STRING([--with-llvmgccdir],
    725     [Specify location of llvm-gcc install dir (default searches PATH)]),,
    726     withval=default)
    727 case "$withval" in
    728   default) WITH_LLVMGCCDIR=default ;;
    729   /* | [[A-Za-z]]:[[\\/]]*)      WITH_LLVMGCCDIR=$withval ;;
    730   *) AC_MSG_ERROR([Invalid path for --with-llvmgccdir. Provide full path]) ;;
    731 esac
    732 
    733 dnl Allow a specific llvm-gcc compiler to be used with this LLVM config.
    734 AC_ARG_WITH(llvmgcc,
    735   AS_HELP_STRING([--with-llvmgcc],
    736     [Specify location of llvm-gcc driver (default searches PATH)]),
    737     LLVMGCC=$with_llvmgcc
    738       WITH_LLVMGCCDIR="",)
    739 
    740 dnl Allow a specific llvm-g++ compiler to be used with this LLVM config.
    741 AC_ARG_WITH(llvmgxx,
    742   AS_HELP_STRING([--with-llvmgxx],
    743     [Specify location of llvm-g++ driver (default searches PATH)]),
    744     LLVMGXX=$with_llvmgxx
    745     WITH_LLVMGCCDIR="",)
    746 
    747 if test -n "$LLVMGCC"; then
    748    LLVMGCCCOMMAND="$LLVMGCC"
    749 fi
    750 
    751 if test -n "$LLVMGXX"; then
    752    LLVMGXXCOMMAND="$LLVMGXX"
    753 fi
    754 
    755 if test -n "$LLVMGCC" && test -z "$LLVMGXX"; then
    756    AC_MSG_ERROR([Invalid llvm-g++. Use --with-llvmgxx when --with-llvmgcc is used]);
    757 fi
    758 
    759 if test -n "$LLVMGXX" && test -z "$LLVMGCC"; then
    760    AC_MSG_ERROR([Invalid llvm-gcc. Use --with-llvmgcc when --with-llvmgxx is used]);
    761 fi
    762 
    763 dnl Allow a specific Clang compiler to be used with this LLVM config.
    764 AC_ARG_WITH(clang,
    765   AS_HELP_STRING([--with-clang],
    766     [Specify location of clang compiler (default is --with-built-clang)]),
    767     [],[with_clang=default])
    768 
    769 dnl Enable use of the built Clang.
    770 AC_ARG_WITH(built-clang,
    771   AS_HELP_STRING([--with-built-clang],
    772     [Use the compiled Clang as the LLVM compiler (default=check)]),
    773     [],[with_built_clang=check])
    774 
    775 dnl Select the Clang compiler option.
    776 dnl
    777 dnl If --with-clang is given, always honor that; otherwise honor
    778 dnl --with-built-clang, or check if we have the clang sources.
    779 AC_MSG_CHECKING([clang compiler])
    780 WITH_CLANGPATH=""
    781 WITH_BUILT_CLANG=0
    782 if test "$with_clang" != "default"; then
    783    WITH_CLANGPATH="$with_clang"
    784    if ! test -x "$WITH_CLANGPATH"; then
    785      AC_MSG_ERROR([invalid --with-clang, path does not specify an executable])
    786    fi
    787 elif test "$with_built_clang" = "yes"; then
    788    WITH_BUILT_CLANG=1
    789 elif test "$with_built_clang" = "no"; then
    790    WITH_BUILT_CLANG=0
    791 else
    792    if test "$with_built_clang" != "check"; then
    793       AC_MSG_ERROR([invalid value for --with-built-clang.])
    794    fi
    795 
    796    if test -f ${srcdir}/tools/clang/README.txt; then
    797      WITH_BUILT_CLANG=1
    798    fi
    799 fi
    800 
    801 if ! test -z "$WITH_CLANGPATH"; then
    802    AC_MSG_RESULT([$WITH_CLANGPATH])
    803    WITH_CLANGXXPATH=`"$WITH_CLANGPATH" --print-prog-name=clang++`
    804 elif test "$WITH_BUILT_CLANG" = "1"; then
    805    AC_MSG_RESULT([built])
    806 else
    807    AC_MSG_RESULT([none])
    808 fi
    809 AC_SUBST(CLANGPATH,$WITH_CLANGPATH)
    810 AC_SUBST(CLANGXXPATH,$WITH_CLANGXXPATH)
    811 AC_SUBST(ENABLE_BUILT_CLANG,$WITH_BUILT_CLANG)
    812 
    813 dnl Override the option to use for optimized builds.
    814 AC_ARG_WITH(optimize-option,
    815   AS_HELP_STRING([--with-optimize-option],
    816                  [Select the compiler options to use for optimized builds]),,
    817                  withval=default)
    818 AC_MSG_CHECKING([optimization flags])
    819 case "$withval" in
    820   default)
    821     case "$llvm_cv_os_type" in
    822     FreeBSD) optimize_option=-O2 ;;
    823     MingW) optimize_option=-O2 ;;
    824     *)     optimize_option=-O3 ;;
    825     esac ;;
    826   *) optimize_option="$withval" ;;
    827 esac
    828 AC_SUBST(OPTIMIZE_OPTION,$optimize_option)
    829 AC_MSG_RESULT([$optimize_option])
    830 
    831 dnl Specify extra build options
    832 AC_ARG_WITH(extra-options,
    833   AS_HELP_STRING([--with-extra-options],
    834                  [Specify additional options to compile LLVM with]),,
    835                  withval=default)
    836 case "$withval" in
    837   default) EXTRA_OPTIONS= ;;
    838   *) EXTRA_OPTIONS=$withval ;;
    839 esac
    840 AC_SUBST(EXTRA_OPTIONS,$EXTRA_OPTIONS)
    841 
    842 dnl Specify extra linker build options
    843 AC_ARG_WITH(extra-ld-options,
    844   AS_HELP_STRING([--with-extra-ld-options],
    845                  [Specify additional options to link LLVM with]),,
    846                  withval=default)
    847 case "$withval" in
    848   default) EXTRA_LD_OPTIONS= ;;
    849   *) EXTRA_LD_OPTIONS=$withval ;;
    850 esac
    851 AC_SUBST(EXTRA_LD_OPTIONS,$EXTRA_LD_OPTIONS)
    852 
    853 dnl Allow specific bindings to be specified for building (or not)
    854 AC_ARG_ENABLE([bindings],AS_HELP_STRING([--enable-bindings],
    855     [Build specific language bindings: all,auto,none,{binding-name} (default=auto)]),,
    856     enableval=default)
    857 BINDINGS_TO_BUILD=""
    858 case "$enableval" in
    859   yes | default | auto) BINDINGS_TO_BUILD="auto" ;;
    860   all ) BINDINGS_TO_BUILD="ocaml" ;;
    861   none | no) BINDINGS_TO_BUILD="" ;;
    862   *)for a_binding in `echo $enableval|sed -e 's/,/ /g' ` ; do
    863       case "$a_binding" in
    864         ocaml) BINDINGS_TO_BUILD="ocaml $BINDINGS_TO_BUILD" ;;
    865         *) AC_MSG_ERROR([Unrecognized binding $a_binding]) ;;
    866       esac
    867   done
    868   ;;
    869 esac
    870 
    871 dnl Allow the ocaml libdir to be overridden. This could go in a configure
    872 dnl script for bindings/ocaml/configure, except that its auto value depends on
    873 dnl OCAMLC, which is found here to support tests.
    874 AC_ARG_WITH([ocaml-libdir],
    875   [AS_HELP_STRING([--with-ocaml-libdir],
    876     [Specify install location for ocaml bindings (default is stdlib)])],
    877   [],
    878   [withval=auto])
    879 case "$withval" in
    880   auto) with_ocaml_libdir="$withval" ;;
    881   /* | [[A-Za-z]]:[[\\/]]*) with_ocaml_libdir="$withval" ;;
    882   *) AC_MSG_ERROR([Invalid path for --with-ocaml-libdir. Provide full path]) ;;
    883 esac
    884 
    885 AC_ARG_WITH(clang-resource-dir,
    886   AS_HELP_STRING([--with-clang-resource-dir],
    887     [Relative directory from the Clang binary for resource files]),,
    888     withval="")
    889 AC_DEFINE_UNQUOTED(CLANG_RESOURCE_DIR,"$withval",
    890                    [Relative directory for resource files])
    891 
    892 AC_ARG_WITH(c-include-dirs,
    893   AS_HELP_STRING([--with-c-include-dirs],
    894     [Colon separated list of directories clang will search for headers]),,
    895     withval="")
    896 AC_DEFINE_UNQUOTED(C_INCLUDE_DIRS,"$withval",
    897                    [Directories clang will search for headers])
    898 
    899 AC_ARG_WITH(cxx-include-root,
    900   AS_HELP_STRING([--with-cxx-include-root],
    901     [Directory with the libstdc++ headers.]),,
    902     withval="")
    903 AC_DEFINE_UNQUOTED(CXX_INCLUDE_ROOT,"$withval",
    904                    [Directory with the libstdc++ headers.])
    905 
    906 AC_ARG_WITH(cxx-include-arch,
    907   AS_HELP_STRING([--with-cxx-include-arch],
    908     [Architecture of the libstdc++ headers.]),,
    909     withval="")
    910 AC_DEFINE_UNQUOTED(CXX_INCLUDE_ARCH,"$withval",
    911                    [Arch the libstdc++ headers.])
    912 
    913 AC_ARG_WITH(cxx-include-32bit-dir,
    914   AS_HELP_STRING([--with-cxx-include-32bit-dir],
    915     [32 bit multilib dir.]),,
    916     withval="")
    917 AC_DEFINE_UNQUOTED(CXX_INCLUDE_32BIT_DIR,"$withval",
    918                    [32 bit multilib directory.])
    919 
    920 AC_ARG_WITH(cxx-include-64bit-dir,
    921   AS_HELP_STRING([--with-cxx-include-64bit-dir],
    922     [64 bit multilib directory.]),,
    923     withval="")
    924 AC_DEFINE_UNQUOTED(CXX_INCLUDE_64BIT_DIR,"$withval",
    925                    [64 bit multilib directory.])
    926 
    927 dnl Allow linking of LLVM with GPLv3 binutils code.
    928 AC_ARG_WITH(binutils-include,
    929   AS_HELP_STRING([--with-binutils-include],
    930     [Specify path to binutils/include/ containing plugin-api.h file for gold plugin.]),,
    931   withval=default)
    932 case "$withval" in
    933   default) WITH_BINUTILS_INCDIR=default ;;
    934   /* | [[A-Za-z]]:[[\\/]]*)      WITH_BINUTILS_INCDIR=$withval ;;
    935   *) AC_MSG_ERROR([Invalid path for --with-binutils-include. Provide full path]) ;;
    936 esac
    937 if test "x$WITH_BINUTILS_INCDIR" != xdefault ; then
    938   AC_SUBST(BINUTILS_INCDIR,$WITH_BINUTILS_INCDIR)
    939   if test ! -f "$WITH_BINUTILS_INCDIR/plugin-api.h"; then
    940      echo "$WITH_BINUTILS_INCDIR/plugin-api.h"
    941      AC_MSG_ERROR([Invalid path to directory containing plugin-api.h.]);
    942   fi
    943 fi
    944 
    945 dnl Specify the URL where bug reports should be submitted.
    946 AC_ARG_WITH(bug-report-url,
    947   AS_HELP_STRING([--with-bug-report-url],
    948     [Specify the URL where bug reports should be submitted (default=http://llvm.org)]),,
    949     withval="http://llvm.org")
    950 AC_DEFINE_UNQUOTED(BUG_REPORT_URL,"$withval",
    951                    [Bug report URL.])
    952 
    953 dnl --enable-libffi : check whether the user wants to turn off libffi:
    954 AC_ARG_ENABLE(libffi,AS_HELP_STRING(
    955   --enable-libffi,[Check for the presence of libffi (default is NO)]),
    956   [case "$enableval" in
    957     yes) llvm_cv_enable_libffi="yes" ;;
    958     no)  llvm_cv_enable_libffi="no"  ;;
    959     *) AC_MSG_ERROR([Invalid setting for --enable-libffi. Use "yes" or "no"]) ;;
    960   esac],
    961   llvm_cv_enable_libffi=no)
    962 
    963 dnl===-----------------------------------------------------------------------===
    964 dnl===
    965 dnl=== SECTION 4: Check for programs we need and that they are the right version
    966 dnl===
    967 dnl===-----------------------------------------------------------------------===
    968 
    969 dnl Check for compilation tools
    970 AC_PROG_CPP
    971 AC_PROG_CC(gcc)
    972 AC_PROG_CXX(g++)
    973 
    974 AC_PROG_NM
    975 AC_SUBST(NM)
    976 
    977 dnl Check for the tools that the makefiles require
    978 AC_CHECK_GNU_MAKE
    979 AC_PROG_LN_S
    980 AC_PATH_PROG(CMP, [cmp], [cmp])
    981 AC_PATH_PROG(CP, [cp], [cp])
    982 AC_PATH_PROG(DATE, [date], [date])
    983 AC_PATH_PROG(FIND, [find], [find])
    984 AC_PATH_PROG(GREP, [grep], [grep])
    985 AC_PATH_PROG(MKDIR,[mkdir],[mkdir])
    986 AC_PATH_PROG(MV,   [mv],   [mv])
    987 AC_PROG_RANLIB
    988 AC_CHECK_TOOL(AR, ar, false)
    989 AC_PATH_PROG(RM,   [rm],   [rm])
    990 AC_PATH_PROG(SED,  [sed],  [sed])
    991 AC_PATH_PROG(TAR,  [tar],  [gtar])
    992 AC_PATH_PROG(BINPWD,[pwd],  [pwd])
    993 
    994 dnl Looking for misc. graph plotting software
    995 AC_PATH_PROG(GRAPHVIZ, [Graphviz], [echo Graphviz])
    996 if test "$GRAPHVIZ" != "echo Graphviz" ; then
    997   AC_DEFINE([HAVE_GRAPHVIZ],[1],[Define if the Graphviz program is available])
    998   dnl If we're targeting for mingw we should emit windows paths, not msys
    999   if test "$llvm_cv_os_type" = "MingW" ; then
   1000     GRAPHVIZ=`echo $GRAPHVIZ | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1001   fi
   1002   AC_DEFINE_UNQUOTED([LLVM_PATH_GRAPHVIZ],"$GRAPHVIZ${EXEEXT}",
   1003    [Define to path to Graphviz program if found or 'echo Graphviz' otherwise])
   1004 fi
   1005 AC_PATH_PROG(DOT, [dot], [echo dot])
   1006 if test "$DOT" != "echo dot" ; then
   1007   AC_DEFINE([HAVE_DOT],[1],[Define if the dot program is available])
   1008   dnl If we're targeting for mingw we should emit windows paths, not msys
   1009   if test "$llvm_cv_os_type" = "MingW" ; then
   1010     DOT=`echo $DOT | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1011   fi
   1012   AC_DEFINE_UNQUOTED([LLVM_PATH_DOT],"$DOT${EXEEXT}",
   1013    [Define to path to dot program if found or 'echo dot' otherwise])
   1014 fi
   1015 AC_PATH_PROG(FDP, [fdp], [echo fdp])
   1016 if test "$FDP" != "echo fdp" ; then
   1017   AC_DEFINE([HAVE_FDP],[1],[Define if the neat program is available])
   1018   dnl If we're targeting for mingw we should emit windows paths, not msys
   1019   if test "$llvm_cv_os_type" = "MingW" ; then
   1020     FDP=`echo $FDP | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1021   fi
   1022   AC_DEFINE_UNQUOTED([LLVM_PATH_FDP],"$FDP${EXEEXT}",
   1023    [Define to path to fdp program if found or 'echo fdp' otherwise])
   1024 fi
   1025 AC_PATH_PROG(NEATO, [neato], [echo neato])
   1026 if test "$NEATO" != "echo neato" ; then
   1027   AC_DEFINE([HAVE_NEATO],[1],[Define if the neat program is available])
   1028   dnl If we're targeting for mingw we should emit windows paths, not msys
   1029   if test "$llvm_cv_os_type" = "MingW" ; then
   1030     NEATO=`echo $NEATO | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1031   fi
   1032   AC_DEFINE_UNQUOTED([LLVM_PATH_NEATO],"$NEATO${EXEEXT}",
   1033    [Define to path to neato program if found or 'echo neato' otherwise])
   1034 fi
   1035 AC_PATH_PROG(TWOPI, [twopi], [echo twopi])
   1036 if test "$TWOPI" != "echo twopi" ; then
   1037   AC_DEFINE([HAVE_TWOPI],[1],[Define if the neat program is available])
   1038   dnl If we're targeting for mingw we should emit windows paths, not msys
   1039   if test "$llvm_cv_os_type" = "MingW" ; then
   1040     TWOPI=`echo $TWOPI | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1041   fi
   1042   AC_DEFINE_UNQUOTED([LLVM_PATH_TWOPI],"$TWOPI${EXEEXT}",
   1043    [Define to path to twopi program if found or 'echo twopi' otherwise])
   1044 fi
   1045 AC_PATH_PROG(CIRCO, [circo], [echo circo])
   1046 if test "$CIRCO" != "echo circo" ; then
   1047   AC_DEFINE([HAVE_CIRCO],[1],[Define if the neat program is available])
   1048   dnl If we're targeting for mingw we should emit windows paths, not msys
   1049   if test "$llvm_cv_os_type" = "MingW" ; then
   1050     CIRCO=`echo $CIRCO | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1051   fi
   1052   AC_DEFINE_UNQUOTED([LLVM_PATH_CIRCO],"$CIRCO${EXEEXT}",
   1053    [Define to path to circo program if found or 'echo circo' otherwise])
   1054 fi
   1055 AC_PATH_PROGS(GV, [gv gsview32], [echo gv])
   1056 if test "$GV" != "echo gv" ; then
   1057   AC_DEFINE([HAVE_GV],[1],[Define if the gv program is available])
   1058   dnl If we're targeting for mingw we should emit windows paths, not msys
   1059   if test "$llvm_cv_os_type" = "MingW" ; then
   1060     GV=`echo $GV | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1061   fi
   1062   AC_DEFINE_UNQUOTED([LLVM_PATH_GV],"$GV${EXEEXT}",
   1063    [Define to path to gv program if found or 'echo gv' otherwise])
   1064 fi
   1065 AC_PATH_PROG(DOTTY, [dotty], [echo dotty])
   1066 if test "$DOTTY" != "echo dotty" ; then
   1067   AC_DEFINE([HAVE_DOTTY],[1],[Define if the dotty program is available])
   1068   dnl If we're targeting for mingw we should emit windows paths, not msys
   1069   if test "$llvm_cv_os_type" = "MingW" ; then
   1070     DOTTY=`echo $DOTTY | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1071   fi
   1072   AC_DEFINE_UNQUOTED([LLVM_PATH_DOTTY],"$DOTTY${EXEEXT}",
   1073    [Define to path to dotty program if found or 'echo dotty' otherwise])
   1074 fi
   1075 AC_PATH_PROG(XDOT_PY, [xdot.py], [echo xdot.py])
   1076 if test "$XDOT_PY" != "echo xdot.py" ; then
   1077   AC_DEFINE([HAVE_XDOT_PY],[1],[Define if the xdot.py program is available])
   1078   dnl If we're targeting for mingw we should emit windows paths, not msys
   1079   if test "$llvm_cv_os_type" = "MingW" ; then
   1080     XDOT_PY=`echo $XDOT_PY | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1081   fi
   1082   AC_DEFINE_UNQUOTED([LLVM_PATH_XDOT_PY],"$XDOT_PY${EXEEXT}",
   1083    [Define to path to xdot.py program if found or 'echo xdot.py' otherwise])
   1084 fi
   1085 
   1086 dnl Look for a sufficiently recent version of Perl.
   1087 LLVM_PROG_PERL([5.006])
   1088 AC_SUBST(PERL)
   1089 if test x"$PERL" = xnone; then
   1090    AC_SUBST(HAVE_PERL,0)
   1091    AC_MSG_ERROR([perl is required but was not found, please install it])
   1092 else
   1093    AC_SUBST(HAVE_PERL,1)
   1094 fi
   1095 
   1096 dnl Find the install program
   1097 AC_PROG_INSTALL
   1098 dnl Prepend src dir to install path dir if it's a relative path
   1099 dnl This is a hack for installs that take place in something other
   1100 dnl than the top level.
   1101 case "$INSTALL" in
   1102  [[\\/$]]* | ?:[[\\/]]* ) ;;
   1103  *)  INSTALL="\\\$(TOPSRCDIR)/$INSTALL" ;;
   1104 esac
   1105 
   1106 dnl Checks for documentation and testing tools that we can do without. If these
   1107 dnl are not found then they are set to "true" which always succeeds but does
   1108 dnl nothing. This just lets the build output show that we could have done
   1109 dnl something if the tool was available.
   1110 AC_PATH_PROG(BZIP2, [bzip2])
   1111 AC_PATH_PROG(CAT, [cat])
   1112 AC_PATH_PROG(DOXYGEN, [doxygen])
   1113 AC_PATH_PROG(GROFF, [groff])
   1114 AC_PATH_PROG(GZIPBIN, [gzip])
   1115 AC_PATH_PROG(POD2HTML, [pod2html])
   1116 AC_PATH_PROG(POD2MAN, [pod2man])
   1117 AC_PATH_PROG(PDFROFF, [pdfroff])
   1118 AC_PATH_PROG(RUNTEST, [runtest])
   1119 DJ_AC_PATH_TCLSH
   1120 AC_PATH_PROG(ZIP, [zip])
   1121 AC_PATH_PROGS(OCAMLC, [ocamlc])
   1122 AC_PATH_PROGS(OCAMLOPT, [ocamlopt])
   1123 AC_PATH_PROGS(OCAMLDEP, [ocamldep])
   1124 AC_PATH_PROGS(OCAMLDOC, [ocamldoc])
   1125 AC_PATH_PROGS(GAS, [gas as])
   1126 
   1127 dnl Get the version of the linker in use.
   1128 AC_LINK_GET_VERSION
   1129 
   1130 dnl Determine whether the linker supports the -R option.
   1131 AC_LINK_USE_R
   1132 
   1133 dnl Determine whether the linker supports the -export-dynamic option.
   1134 AC_LINK_EXPORT_DYNAMIC
   1135 
   1136 dnl Determine whether the linker supports the --version-script option.
   1137 AC_LINK_VERSION_SCRIPT
   1138 
   1139 dnl Check for libtool and the library that has dlopen function (which must come
   1140 dnl before the AC_PROG_LIBTOOL check in order to enable dlopening libraries with
   1141 dnl libtool).
   1142 AC_LIBTOOL_DLOPEN
   1143 AC_LIB_LTDL
   1144 
   1145 if test "$WITH_LLVMGCCDIR" = "default" ; then
   1146   LLVMGCC="llvm-gcc${EXEEXT}"
   1147   LLVMGXX="llvm-g++${EXEEXT}"
   1148   LLVMGCCCOMMAND="$LLVMGCC"
   1149   LLVMGXXCOMMAND="$LLVMGXX"
   1150   AC_SUBST(LLVMGCCCOMMAND,$LLVMGCCCOMMAND)
   1151   AC_SUBST(LLVMGXXCOMMAND,$LLVMGXXCOMMAND)
   1152   AC_PATH_PROG(LLVMGCC, $LLVMGCC, [])
   1153   AC_PATH_PROG(LLVMGXX, $LLVMGXX, [])
   1154 else
   1155   if test -z "$LLVMGCC"; then
   1156     LLVMGCC="$WITH_LLVMGCCDIR/bin/llvm-gcc${EXEEXT}"
   1157     LLVMGCCCOMMAND="$LLVMGCC"
   1158   fi
   1159   if test -z "$LLVMGXX"; then
   1160     LLVMGXX="$WITH_LLVMGCCDIR/bin/llvm-g++${EXEEXT}"
   1161     LLVMGXXCOMMAND="$LLVMGXX"
   1162   fi
   1163 
   1164   AC_SUBST(LLVMGCC,$LLVMGCC)
   1165   AC_SUBST(LLVMGXX,$LLVMGXX)
   1166   AC_SUBST(LLVMGCCCOMMAND,$LLVMGCCCOMMAND)
   1167   AC_SUBST(LLVMGXXCOMMAND,$LLVMGXXCOMMAND)
   1168 fi
   1169 
   1170 dnl Select the LLVM capable compiler to use, we default to using llvm-gcc if
   1171 dnl found, otherwise clang if available.
   1172 AC_ARG_WITH(llvmcc,
   1173   AS_HELP_STRING([--with-llvmcc=<name>],
   1174     [Choose the LLVM capable compiler to use (llvm-gcc, clang, or none; default=check)]),
   1175     [],[with_llvmcc=check])
   1176 AC_MSG_CHECKING([LLVM capable compiler])
   1177 if test "$with_llvmcc" != "check"; then
   1178    if (test "$with_llvmcc" != "llvm-gcc" &&
   1179        test "$with_llvmcc" != "clang" &&
   1180        test "$with_llvmcc" != "none"); then
   1181       AC_MSG_ERROR([invalid value for --with-llvmcc, expected 'llvm-gcc', 'clang', or 'none'.])
   1182    fi
   1183    WITH_LLVMCC="$with_llvmcc"
   1184 elif test -n "$LLVMGCC"; then
   1185    WITH_LLVMCC=llvm-gcc
   1186 elif test -n "$WITH_CLANGPATH" || test "$WITH_BUILT_CLANG" -ne "0"; then
   1187    WITH_LLVMCC=clang
   1188 else
   1189    WITH_LLVMCC=none
   1190 fi
   1191 AC_MSG_RESULT([$WITH_LLVMCC])
   1192 AC_SUBST(LLVMCC_OPTION,$WITH_LLVMCC)
   1193 
   1194 AC_MSG_CHECKING([tool compatibility])
   1195 
   1196 dnl Ensure that compilation tools are GCC or a GNU compatible compiler such as
   1197 dnl ICC; we use GCC specific options in the makefiles so the compiler needs
   1198 dnl to support those options.
   1199 dnl "icc" emits gcc signatures
   1200 dnl "icc -no-gcc" emits no gcc signature BUT is still compatible
   1201 ICC=no
   1202 IXX=no
   1203 case $CC in
   1204   icc*|icpc*)
   1205     ICC=yes
   1206     IXX=yes
   1207     ;;
   1208    *)
   1209     ;;
   1210 esac
   1211 
   1212 if test "$GCC" != "yes" && test "$ICC" != "yes"
   1213 then
   1214   AC_MSG_ERROR([gcc|icc required but not found])
   1215 fi
   1216 
   1217 dnl Ensure that compilation tools are compatible with GCC extensions
   1218 if test "$GXX" != "yes" && test "$IXX" != "yes"
   1219 then
   1220   AC_MSG_ERROR([g++|clang++|icc required but not found])
   1221 fi
   1222 
   1223 dnl Verify that GCC is version 3.0 or higher
   1224 if test "$GCC" = "yes"
   1225 then
   1226   AC_COMPILE_IFELSE([[#if !defined(__GNUC__) || __GNUC__ < 3
   1227 #error Unsupported GCC version
   1228 #endif
   1229 ]], [], [AC_MSG_ERROR([gcc 3.x required, but you have a lower version])])
   1230 fi
   1231 
   1232 dnl Check for GNU Make.  We use its extensions, so don't build without it
   1233 if test -z "$llvm_cv_gnu_make_command"
   1234 then
   1235   AC_MSG_ERROR([GNU Make required but not found])
   1236 fi
   1237 
   1238 dnl Tool compatibility is okay if we make it here.
   1239 AC_MSG_RESULT([ok])
   1240 
   1241 dnl Check optional compiler flags.
   1242 AC_MSG_CHECKING([optional compiler flags])
   1243 CXX_FLAG_CHECK(NO_VARIADIC_MACROS, [-Wno-variadic-macros])
   1244 CXX_FLAG_CHECK(NO_MISSING_FIELD_INITIALIZERS, [-Wno-missing-field-initializers])
   1245 AC_MSG_RESULT([$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS])
   1246 
   1247 dnl===-----------------------------------------------------------------------===
   1248 dnl===
   1249 dnl=== SECTION 5: Check for libraries
   1250 dnl===
   1251 dnl===-----------------------------------------------------------------------===
   1252 
   1253 AC_CHECK_LIB(m,sin)
   1254 if test "$llvm_cv_os_type" = "MingW" ; then
   1255   AC_CHECK_LIB(imagehlp, main)
   1256   AC_CHECK_LIB(psapi, main)
   1257 fi
   1258 
   1259 dnl dlopen() is required for plugin support.
   1260 AC_SEARCH_LIBS(dlopen,dl,AC_DEFINE([HAVE_DLOPEN],[1],
   1261                [Define if dlopen() is available on this platform.]),
   1262                AC_MSG_WARN([dlopen() not found - disabling plugin support]))
   1263 
   1264 dnl libffi is optional; used to call external functions from the interpreter
   1265 if test "$llvm_cv_enable_libffi" = "yes" ; then
   1266   AC_SEARCH_LIBS(ffi_call,ffi,AC_DEFINE([HAVE_FFI_CALL],[1],
   1267                  [Define if libffi is available on this platform.]),
   1268                  AC_MSG_ERROR([libffi not found - configure without --enable-libffi to compile without it]))
   1269 fi
   1270 
   1271 dnl mallinfo is optional; the code can compile (minus features) without it
   1272 AC_SEARCH_LIBS(mallinfo,malloc,AC_DEFINE([HAVE_MALLINFO],[1],
   1273                [Define if mallinfo() is available on this platform.]))
   1274 
   1275 dnl pthread locking functions are optional - but llvm will not be thread-safe
   1276 dnl without locks.
   1277 if test "$ENABLE_THREADS" -eq 1 && test "$ENABLE_PTHREADS" -eq 1 ; then
   1278   AC_CHECK_LIB(pthread, pthread_mutex_init)
   1279   AC_SEARCH_LIBS(pthread_mutex_lock,pthread,
   1280                  AC_DEFINE([HAVE_PTHREAD_MUTEX_LOCK],[1],
   1281                            [Have pthread_mutex_lock]))
   1282   AC_SEARCH_LIBS(pthread_rwlock_init,pthread,
   1283                  AC_DEFINE([HAVE_PTHREAD_RWLOCK_INIT],[1],
   1284                  [Have pthread_rwlock_init]))
   1285   AC_SEARCH_LIBS(pthread_getspecific,pthread,
   1286                  AC_DEFINE([HAVE_PTHREAD_GETSPECIFIC],[1],
   1287                  [Have pthread_getspecific]))
   1288 fi
   1289 
   1290 dnl Allow extra x86-disassembler library
   1291 AC_ARG_WITH(udis86,
   1292   AS_HELP_STRING([--with-udis86=<path>],
   1293     [Use udis86 external x86 disassembler library]),
   1294     [
   1295       AC_SUBST(USE_UDIS86, [1])
   1296       case "$withval" in
   1297         /usr/lib|yes) ;;
   1298         *) LDFLAGS="$LDFLAGS -L${withval}" ;;
   1299       esac
   1300       AC_CHECK_LIB(udis86, ud_init, [], [
   1301         echo "Error! You need to have libudis86 around."
   1302         exit -1
   1303       ])
   1304     ],
   1305     AC_SUBST(USE_UDIS86, [0]))
   1306 AC_DEFINE_UNQUOTED([USE_UDIS86],$USE_UDIS86,
   1307                    [Define if use udis86 library])
   1308 
   1309 dnl Allow OProfile support for JIT output.
   1310 AC_ARG_WITH(oprofile,
   1311   AS_HELP_STRING([--with-oprofile=<prefix>],
   1312     [Tell OProfile >= 0.9.4 how to symbolize JIT output]),
   1313     [
   1314       AC_SUBST(USE_OPROFILE, [1])
   1315       case "$withval" in
   1316         /usr|yes) llvm_cv_oppath=/usr/lib/oprofile ;;
   1317         no) llvm_cv_oppath=
   1318             AC_SUBST(USE_OPROFILE, [0]) ;;
   1319         *) llvm_cv_oppath="${withval}/lib/oprofile"
   1320            CPPFLAGS="-I${withval}/include";;
   1321       esac
   1322       if test -n "$llvm_cv_oppath" ; then
   1323         LIBS="$LIBS -L${llvm_cv_oppath} -Wl,-rpath,${llvm_cv_oppath}"
   1324         dnl Work around http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=537744:
   1325         dnl libbfd is not included properly in libopagent in some Debian
   1326         dnl versions.  If libbfd isn't found at all, we assume opagent works
   1327         dnl anyway.
   1328         AC_SEARCH_LIBS(bfd_init, bfd, [], [])
   1329         AC_SEARCH_LIBS(op_open_agent, opagent, [], [
   1330           echo "Error! You need to have libopagent around."
   1331           exit -1
   1332         ])
   1333         AC_CHECK_HEADER([opagent.h], [], [
   1334           echo "Error! You need to have opagent.h around."
   1335           exit -1
   1336           ])
   1337       fi
   1338     ],
   1339     [
   1340       AC_SUBST(USE_OPROFILE, [0])
   1341     ])
   1342 AC_DEFINE_UNQUOTED([USE_OPROFILE],$USE_OPROFILE,
   1343                    [Define if we have the oprofile JIT-support library])
   1344 
   1345 dnl===-----------------------------------------------------------------------===
   1346 dnl===
   1347 dnl=== SECTION 6: Check for header files
   1348 dnl===
   1349 dnl===-----------------------------------------------------------------------===
   1350 
   1351 dnl First, use autoconf provided macros for specific headers that we need
   1352 dnl We don't check for ancient stuff or things that are guaranteed to be there
   1353 dnl by the C++ standard. We always use the <cfoo> versions of <foo.h> C headers.
   1354 dnl Generally we're looking for POSIX headers.
   1355 AC_HEADER_DIRENT
   1356 AC_HEADER_MMAP_ANONYMOUS
   1357 AC_HEADER_STAT
   1358 AC_HEADER_STDC
   1359 AC_HEADER_SYS_WAIT
   1360 AC_HEADER_TIME
   1361 
   1362 AC_CHECK_HEADERS([dlfcn.h execinfo.h fcntl.h inttypes.h limits.h link.h])
   1363 AC_CHECK_HEADERS([malloc.h setjmp.h signal.h stdint.h termios.h unistd.h])
   1364 AC_CHECK_HEADERS([utime.h windows.h])
   1365 AC_CHECK_HEADERS([sys/mman.h sys/param.h sys/resource.h sys/time.h sys/uio.h])
   1366 AC_CHECK_HEADERS([sys/types.h sys/ioctl.h malloc/malloc.h mach/mach.h])
   1367 AC_CHECK_HEADERS([valgrind/valgrind.h])
   1368 AC_CHECK_HEADERS([fenv.h])
   1369 if test "$ENABLE_THREADS" -eq 1 && test "$ENABLE_PTHREADS" -eq 1 ; then
   1370   AC_CHECK_HEADERS(pthread.h,
   1371                    AC_SUBST(HAVE_PTHREAD, 1),
   1372                    AC_SUBST(HAVE_PTHREAD, 0))
   1373 else
   1374   AC_SUBST(HAVE_PTHREAD, 0)
   1375 fi
   1376 
   1377 dnl Try to find ffi.h.
   1378 if test "$llvm_cv_enable_libffi" = "yes" ; then
   1379   AC_CHECK_HEADERS([ffi.h ffi/ffi.h])
   1380 fi
   1381 
   1382 dnl Try to find Darwin specific crash reporting libraries.
   1383 AC_CHECK_HEADERS([CrashReporterClient.h])
   1384 
   1385 dnl Try to find Darwin specific crash reporting global.
   1386 AC_MSG_CHECKING([__crashreporter_info__])
   1387 AC_LINK_IFELSE(
   1388   AC_LANG_SOURCE(
   1389     [[extern const char *__crashreporter_info__;
   1390       int main() {
   1391         __crashreporter_info__ = "test";
   1392         return 0;
   1393       }
   1394     ]]),
   1395   AC_MSG_RESULT(yes)
   1396   AC_DEFINE(HAVE_CRASHREPORTER_INFO, 1, Can use __crashreporter_info__),
   1397   AC_MSG_RESULT(no)
   1398   AC_DEFINE(HAVE_CRASHREPORTER_INFO, 0,
   1399             Define if __crashreporter_info__ exists.))
   1400 
   1401 dnl===-----------------------------------------------------------------------===
   1402 dnl===
   1403 dnl=== SECTION 7: Check for types and structures
   1404 dnl===
   1405 dnl===-----------------------------------------------------------------------===
   1406 
   1407 AC_HUGE_VAL_CHECK
   1408 AC_TYPE_PID_T
   1409 AC_TYPE_SIZE_T
   1410 AC_DEFINE_UNQUOTED([RETSIGTYPE],[void],[Define as the return type of signal handlers (`int' or `void').])
   1411 AC_STRUCT_TM
   1412 AC_CHECK_TYPES([int64_t],,AC_MSG_ERROR([Type int64_t required but not found]))
   1413 AC_CHECK_TYPES([uint64_t],,
   1414          AC_CHECK_TYPES([u_int64_t],,
   1415          AC_MSG_ERROR([Type uint64_t or u_int64_t required but not found])))
   1416 
   1417 dnl===-----------------------------------------------------------------------===
   1418 dnl===
   1419 dnl=== SECTION 8: Check for specific functions needed
   1420 dnl===
   1421 dnl===-----------------------------------------------------------------------===
   1422 
   1423 AC_CHECK_FUNCS([backtrace ceilf floorf roundf rintf nearbyintf getcwd ])
   1424 AC_CHECK_FUNCS([powf fmodf strtof round ])
   1425 AC_CHECK_FUNCS([getpagesize getrusage getrlimit setrlimit gettimeofday ])
   1426 AC_CHECK_FUNCS([isatty mkdtemp mkstemp ])
   1427 AC_CHECK_FUNCS([mktemp posix_spawn realpath sbrk setrlimit strdup ])
   1428 AC_CHECK_FUNCS([strerror strerror_r setenv ])
   1429 AC_CHECK_FUNCS([strtoll strtoq sysconf malloc_zone_statistics ])
   1430 AC_CHECK_FUNCS([setjmp longjmp sigsetjmp siglongjmp writev])
   1431 AC_C_PRINTF_A
   1432 AC_FUNC_RAND48
   1433 
   1434 dnl Check the declaration "Secure API" on Windows environments.
   1435 AC_CHECK_DECLS([strerror_s])
   1436 
   1437 dnl Check symbols in libgcc.a for JIT on Mingw.
   1438 if test "$llvm_cv_os_type" = "MingW" ; then
   1439   AC_CHECK_LIB(gcc,_alloca,AC_DEFINE([HAVE__ALLOCA],[1],[Have host's _alloca]))
   1440   AC_CHECK_LIB(gcc,__alloca,AC_DEFINE([HAVE___ALLOCA],[1],[Have host's __alloca]))
   1441   AC_CHECK_LIB(gcc,__chkstk,AC_DEFINE([HAVE___CHKSTK],[1],[Have host's __chkstk]))
   1442   AC_CHECK_LIB(gcc,___chkstk,AC_DEFINE([HAVE____CHKSTK],[1],[Have host's ___chkstk]))
   1443 
   1444   AC_CHECK_LIB(gcc,__ashldi3,AC_DEFINE([HAVE___ASHLDI3],[1],[Have host's __ashldi3]))
   1445   AC_CHECK_LIB(gcc,__ashrdi3,AC_DEFINE([HAVE___ASHRDI3],[1],[Have host's __ashrdi3]))
   1446   AC_CHECK_LIB(gcc,__divdi3,AC_DEFINE([HAVE___DIVDI3],[1],[Have host's __divdi3]))
   1447   AC_CHECK_LIB(gcc,__fixdfdi,AC_DEFINE([HAVE___FIXDFDI],[1],[Have host's __fixdfdi]))
   1448   AC_CHECK_LIB(gcc,__fixsfdi,AC_DEFINE([HAVE___FIXSFDI],[1],[Have host's __fixsfdi]))
   1449   AC_CHECK_LIB(gcc,__floatdidf,AC_DEFINE([HAVE___FLOATDIDF],[1],[Have host's __floatdidf]))
   1450   AC_CHECK_LIB(gcc,__lshrdi3,AC_DEFINE([HAVE___LSHRDI3],[1],[Have host's __lshrdi3]))
   1451   AC_CHECK_LIB(gcc,__moddi3,AC_DEFINE([HAVE___MODDI3],[1],[Have host's __moddi3]))
   1452   AC_CHECK_LIB(gcc,__udivdi3,AC_DEFINE([HAVE___UDIVDI3],[1],[Have host's __udivdi3]))
   1453   AC_CHECK_LIB(gcc,__umoddi3,AC_DEFINE([HAVE___UMODDI3],[1],[Have host's __umoddi3]))
   1454 
   1455   AC_CHECK_LIB(gcc,__main,AC_DEFINE([HAVE___MAIN],[1],[Have host's __main]))
   1456   AC_CHECK_LIB(gcc,__cmpdi2,AC_DEFINE([HAVE___CMPDI2],[1],[Have host's __cmpdi2]))
   1457 fi
   1458 
   1459 dnl Check Win32 API EnumerateLoadedModules.
   1460 if test "$llvm_cv_os_type" = "MingW" ; then
   1461   AC_MSG_CHECKING([whether EnumerateLoadedModules() accepts new decl])
   1462   AC_COMPILE_IFELSE([[#include <windows.h>
   1463 #include <imagehlp.h>
   1464 extern void foo(PENUMLOADED_MODULES_CALLBACK);
   1465 extern void foo(BOOL(CALLBACK*)(PCSTR,ULONG_PTR,ULONG,PVOID));]],
   1466 [
   1467   AC_MSG_RESULT([yes])
   1468   llvm_cv_win32_elmcb_pcstr="PCSTR"
   1469 ],
   1470 [
   1471   AC_MSG_RESULT([no])
   1472   llvm_cv_win32_elmcb_pcstr="PSTR"
   1473 ])
   1474   AC_DEFINE_UNQUOTED([WIN32_ELMCB_PCSTR],$llvm_cv_win32_elmcb_pcstr,[Type of 1st arg on ELM Callback])
   1475 fi
   1476 
   1477 dnl Check for variations in the Standard C++ library and STL. These macros are
   1478 dnl provided by LLVM in the autoconf/m4 directory.
   1479 AC_FUNC_ISNAN
   1480 AC_FUNC_ISINF
   1481 
   1482 dnl Check for mmap support.We also need to know if /dev/zero is required to
   1483 dnl be opened for allocating RWX memory.
   1484 dnl Make sure we aren't attempting to configure for an unknown system
   1485 if test "$llvm_cv_platform_type" = "Unix" ; then
   1486   AC_FUNC_MMAP
   1487   AC_FUNC_MMAP_FILE
   1488   AC_NEED_DEV_ZERO_FOR_MMAP
   1489 
   1490   if test "$ac_cv_func_mmap_fixed_mapped" = "no"
   1491   then
   1492     AC_MSG_WARN([mmap() of a fixed address required but not supported])
   1493   fi
   1494   if test "$ac_cv_func_mmap_file" = "no"
   1495   then
   1496     AC_MSG_WARN([mmap() of files required but not found])
   1497   fi
   1498 fi
   1499 
   1500 dnl atomic builtins are required for threading support.
   1501 AC_MSG_CHECKING(for GCC atomic builtins)
   1502 dnl Since we'll be using these atomic builtins in C++ files we should test
   1503 dnl the C++ compiler.
   1504 AC_LANG_PUSH([C++])
   1505 AC_LINK_IFELSE(
   1506   AC_LANG_SOURCE(
   1507     [[int main() {
   1508         volatile unsigned long val = 1;
   1509         __sync_synchronize();
   1510         __sync_val_compare_and_swap(&val, 1, 0);
   1511         __sync_add_and_fetch(&val, 1);
   1512         __sync_sub_and_fetch(&val, 1);
   1513         return 0;
   1514       }
   1515     ]]),
   1516   AC_LANG_POP([C++])
   1517   AC_MSG_RESULT(yes)
   1518   AC_DEFINE(LLVM_MULTITHREADED, 1, Build multithreading support into LLVM),
   1519   AC_MSG_RESULT(no)
   1520   AC_DEFINE(LLVM_MULTITHREADED, 0, Build multithreading support into LLVM)
   1521   AC_MSG_WARN([LLVM will be built thread-unsafe because atomic builtins are missing]))
   1522 
   1523 dnl===-----------------------------------------------------------------------===
   1524 dnl===
   1525 dnl=== SECTION 9: Additional checks, variables, etc.
   1526 dnl===
   1527 dnl===-----------------------------------------------------------------------===
   1528 
   1529 dnl Handle 32-bit linux systems running a 64-bit kernel.
   1530 dnl This has to come after section 4 because it invokes the compiler.
   1531 if test "$llvm_cv_os_type" = "Linux" -a "$llvm_cv_target_arch" = "x86_64" ; then
   1532   AC_IS_LINUX_MIXED
   1533   if test "$llvm_cv_linux_mixed" = "yes"; then
   1534     llvm_cv_target_arch="x86"
   1535     ARCH="x86"
   1536   fi
   1537 fi
   1538 
   1539 dnl Check, whether __dso_handle is present
   1540 AC_CHECK_FUNCS([__dso_handle])
   1541 
   1542 dnl Check wether llvm-gcc is based on dragonegg
   1543 AC_CACHE_CHECK([whether llvm-gcc is dragonegg],[llvm_cv_llvmgcc_dragonegg],
   1544 [llvm_cv_llvmgcc_dragonegg="no"
   1545 if test -n "$LLVMGCC" ; then
   1546   cp /dev/null conftest.c
   1547   $LLVMGCC -fplugin-arg-dragonegg-emit-ir -S -o - conftest.c > /dev/null 2>&1
   1548   if test $? -eq 0 ; then
   1549     llvm_cv_llvmgcc_dragonegg="yes"
   1550   fi
   1551   rm conftest.c
   1552 fi])
   1553 
   1554 dnl Set the flags needed to emit LLVM IR and to disable optimizations
   1555 dnl in llvmgcc
   1556 if test "$llvm_cv_llvmgcc_dragonegg" = "yes" ; then
   1557   LLVMCC_EMITIR_FLAG="-fplugin-arg-dragonegg-emit-ir"
   1558   LLVMCC_DISABLEOPT_FLAGS="-fplugin-arg-dragonegg-llvm-ir-optimize=0"
   1559 else
   1560   LLVMCC_EMITIR_FLAG="-emit-llvm"
   1561   LLVMCC_DISABLEOPT_FLAGS="-mllvm -disable-llvm-optzns"
   1562 fi
   1563 
   1564 AC_SUBST(LLVMCC_EMITIR_FLAG)
   1565 
   1566 dnl See if the llvm-gcc executable can compile to LLVM assembly
   1567 AC_CACHE_CHECK([whether llvm-gcc is sane],[llvm_cv_llvmgcc_sanity],
   1568 [llvm_cv_llvmgcc_sanity="no"
   1569 if test -n "$LLVMGCC" ; then
   1570   cp /dev/null conftest.c
   1571   $LLVMGCC "$LLVMCC_EMITIR_FLAG" -S -o - conftest.c | \
   1572       grep 'target datalayout =' > /dev/null 2>&1
   1573   if test $? -eq 0 ; then
   1574     llvm_cv_llvmgcc_sanity="yes"
   1575   fi
   1576   rm conftest.c
   1577 fi])
   1578 
   1579 dnl Since we have a sane llvm-gcc, identify it and its sub-tools
   1580 dnl Furthermore, add some information about the tools
   1581 if test "$llvm_cv_llvmgcc_sanity" = "yes" ; then
   1582   AC_MSG_CHECKING([llvm-gcc component support])
   1583   llvmcc1path=`$LLVMGCC --print-prog-name=cc1`
   1584   AC_SUBST(LLVMCC1,$llvmcc1path)
   1585   llvmcc1pluspath=`$LLVMGCC --print-prog-name=cc1plus`
   1586   AC_SUBST(LLVMCC1PLUS,$llvmcc1pluspath)
   1587   llvmgccdir=`echo "$llvmcc1path" | sed 's,/libexec/.*,,'`
   1588   AC_SUBST(LLVMGCCDIR,$llvmgccdir)
   1589   llvmgcclangs=[`$LLVMGCC -v --help 2>&1 | grep '^Configured with:' | sed 's/^.*--enable-languages=\([^ ]*\).*/\1/'`]
   1590   AC_SUBST(LLVMGCC_LANGS,$llvmgcclangs)
   1591   AC_SUBST(LLVMGCC_DRAGONEGG,$llvm_cv_llvmgcc_dragonegg)
   1592   AC_SUBST(LLVMCC_DISABLEOPT_FLAGS)
   1593   AC_MSG_RESULT([ok])
   1594 fi
   1595 
   1596 dnl Propagate the shared library extension that the libltdl checks did to
   1597 dnl the Makefiles so we can use it there too
   1598 AC_SUBST(SHLIBEXT,$libltdl_cv_shlibext)
   1599 
   1600 dnl Propagate the run-time library path variable that the libltdl
   1601 dnl checks found to the Makefiles so we can use it there too
   1602 AC_SUBST(SHLIBPATH_VAR,$libltdl_cv_shlibpath_var)
   1603 
   1604 # Translate the various configuration directories and other basic
   1605 # information into substitutions that will end up in Makefile.config.in
   1606 # that these configured values can be used by the makefiles
   1607 if test "${prefix}" = "NONE" ; then
   1608   prefix="/usr/local"
   1609 fi
   1610 eval LLVM_PREFIX="${prefix}";
   1611 eval LLVM_BINDIR="${prefix}/bin";
   1612 eval LLVM_LIBDIR="${prefix}/lib";
   1613 eval LLVM_DATADIR="${prefix}/share/llvm";
   1614 eval LLVM_DOCSDIR="${prefix}/share/doc/llvm";
   1615 eval LLVM_ETCDIR="${prefix}/etc/llvm";
   1616 eval LLVM_INCLUDEDIR="${prefix}/include";
   1617 eval LLVM_INFODIR="${prefix}/info";
   1618 eval LLVM_MANDIR="${prefix}/man";
   1619 LLVM_CONFIGTIME=`date`
   1620 AC_SUBST(LLVM_PREFIX)
   1621 AC_SUBST(LLVM_BINDIR)
   1622 AC_SUBST(LLVM_LIBDIR)
   1623 AC_SUBST(LLVM_DATADIR)
   1624 AC_SUBST(LLVM_DOCSDIR)
   1625 AC_SUBST(LLVM_ETCDIR)
   1626 AC_SUBST(LLVM_INCLUDEDIR)
   1627 AC_SUBST(LLVM_INFODIR)
   1628 AC_SUBST(LLVM_MANDIR)
   1629 AC_SUBST(LLVM_CONFIGTIME)
   1630 
   1631 # Place the various directores into the config.h file as #defines so that we
   1632 # can know about the installation paths within LLVM.
   1633 AC_DEFINE_UNQUOTED(LLVM_PREFIX,"$LLVM_PREFIX",
   1634                    [Installation prefix directory])
   1635 AC_DEFINE_UNQUOTED(LLVM_BINDIR, "$LLVM_BINDIR",
   1636                    [Installation directory for binary executables])
   1637 AC_DEFINE_UNQUOTED(LLVM_LIBDIR, "$LLVM_LIBDIR",
   1638                    [Installation directory for libraries])
   1639 AC_DEFINE_UNQUOTED(LLVM_DATADIR, "$LLVM_DATADIR",
   1640                    [Installation directory for data files])
   1641 AC_DEFINE_UNQUOTED(LLVM_DOCSDIR, "$LLVM_DOCSDIR",
   1642                    [Installation directory for documentation])
   1643 AC_DEFINE_UNQUOTED(LLVM_ETCDIR, "$LLVM_ETCDIR",
   1644                    [Installation directory for config files])
   1645 AC_DEFINE_UNQUOTED(LLVM_INCLUDEDIR, "$LLVM_INCLUDEDIR",
   1646                    [Installation directory for include files])
   1647 AC_DEFINE_UNQUOTED(LLVM_INFODIR, "$LLVM_INFODIR",
   1648                    [Installation directory for .info files])
   1649 AC_DEFINE_UNQUOTED(LLVM_MANDIR, "$LLVM_MANDIR",
   1650                    [Installation directory for man pages])
   1651 AC_DEFINE_UNQUOTED(LLVM_CONFIGTIME, "$LLVM_CONFIGTIME",
   1652                    [Time at which LLVM was configured])
   1653 AC_DEFINE_UNQUOTED(LLVM_HOSTTRIPLE, "$host",
   1654                    [Host triple we were built on])
   1655 
   1656 # Determine which bindings to build.
   1657 if test "$BINDINGS_TO_BUILD" = auto ; then
   1658   BINDINGS_TO_BUILD=""
   1659   if test "x$OCAMLC" != x -a "x$OCAMLDEP" != x ; then
   1660     BINDINGS_TO_BUILD="ocaml $BINDINGS_TO_BUILD"
   1661   fi
   1662 fi
   1663 AC_SUBST(BINDINGS_TO_BUILD,$BINDINGS_TO_BUILD)
   1664 
   1665 # This isn't really configurey, but it avoids having to repeat the list in
   1666 # other files.
   1667 AC_SUBST(ALL_BINDINGS,ocaml)
   1668 
   1669 # Do any work necessary to ensure that bindings have what they need.
   1670 binding_prereqs_failed=0
   1671 for a_binding in $BINDINGS_TO_BUILD ; do
   1672   case "$a_binding" in
   1673   ocaml)
   1674     if test "x$OCAMLC" = x ; then
   1675       AC_MSG_WARN([--enable-bindings=ocaml specified, but ocamlc not found. Try configure OCAMLC=/path/to/ocamlc])
   1676       binding_prereqs_failed=1
   1677     fi
   1678     if test "x$OCAMLDEP" = x ; then
   1679       AC_MSG_WARN([--enable-bindings=ocaml specified, but ocamldep not found. Try configure OCAMLDEP=/path/to/ocamldep])
   1680       binding_prereqs_failed=1
   1681     fi
   1682     if test "x$OCAMLOPT" = x ; then
   1683       AC_MSG_WARN([--enable-bindings=ocaml specified, but ocamlopt not found. Try configure OCAMLOPT=/path/to/ocamlopt])
   1684       dnl ocamlopt is optional!
   1685     fi
   1686     if test "x$with_ocaml_libdir" != xauto ; then
   1687       AC_SUBST(OCAML_LIBDIR,$with_ocaml_libdir)
   1688     else
   1689       ocaml_stdlib="`"$OCAMLC" -where`"
   1690       if test "$LLVM_PREFIX" '<' "$ocaml_stdlib" -a "$ocaml_stdlib" '<' "$LLVM_PREFIX~"
   1691       then
   1692         # ocaml stdlib is beneath our prefix; use stdlib
   1693         AC_SUBST(OCAML_LIBDIR,$ocaml_stdlib)
   1694       else
   1695         # ocaml stdlib is outside our prefix; use libdir/ocaml
   1696         AC_SUBST(OCAML_LIBDIR,$LLVM_LIBDIR/ocaml)
   1697       fi
   1698     fi
   1699     ;;
   1700   esac
   1701 done
   1702 if test "$binding_prereqs_failed" = 1 ; then
   1703   AC_MSG_ERROR([Prequisites for bindings not satisfied. Fix them or use configure --disable-bindings.])
   1704 fi
   1705 
   1706 dnl Determine whether the compiler supports -fvisibility-inlines-hidden.
   1707 AC_CXX_USE_VISIBILITY_INLINES_HIDDEN
   1708 
   1709 dnl Determine linker rpath flag
   1710 if test "$llvm_cv_link_use_r" = "yes" ; then
   1711   RPATH="-Wl,-R"
   1712 else
   1713   RPATH="-Wl,-rpath"
   1714 fi
   1715 AC_SUBST(RPATH)
   1716 
   1717 dnl Determine linker rdynamic flag
   1718 if test "$llvm_cv_link_use_export_dynamic" = "yes" ; then
   1719   RDYNAMIC="-Wl,-export-dynamic"
   1720 else
   1721   RDYNAMIC=""
   1722 fi
   1723 AC_SUBST(RDYNAMIC)
   1724 
   1725 dnl===-----------------------------------------------------------------------===
   1726 dnl===
   1727 dnl=== SECTION 10: Specify the output files and generate it
   1728 dnl===
   1729 dnl===-----------------------------------------------------------------------===
   1730 
   1731 dnl Configure header files
   1732 dnl WARNING: dnl If you add or remove any of the following config headers, then
   1733 dnl you MUST also update Makefile.rules so that the variable FilesToConfig
   1734 dnl contains the same list of files as AC_CONFIG_HEADERS below. This ensures the
   1735 dnl files can be updated automatically when their *.in sources change.
   1736 AC_CONFIG_HEADERS([include/llvm/Config/config.h include/llvm/Config/llvm-config.h])
   1737 AH_TOP([#ifndef CONFIG_H
   1738 #define CONFIG_H])
   1739 AH_BOTTOM([#endif])
   1740 
   1741 AC_CONFIG_FILES([include/llvm/Config/Targets.def])
   1742 AC_CONFIG_FILES([include/llvm/Config/AsmPrinters.def])
   1743 AC_CONFIG_FILES([include/llvm/Config/AsmParsers.def])
   1744 AC_CONFIG_FILES([include/llvm/Config/Disassemblers.def])
   1745 AC_CONFIG_HEADERS([include/llvm/Support/DataTypes.h])
   1746 
   1747 dnl Configure the makefile's configuration data
   1748 AC_CONFIG_FILES([Makefile.config])
   1749 
   1750 dnl Configure the RPM spec file for LLVM
   1751 AC_CONFIG_FILES([llvm.spec])
   1752 
   1753 dnl Configure doxygen's configuration file
   1754 AC_CONFIG_FILES([docs/doxygen.cfg])
   1755 if test -f ${srcdir}/tools/clang/README.txt; then
   1756   AC_CONFIG_FILES([tools/clang/docs/doxygen.cfg])
   1757 fi
   1758 
   1759 dnl Configure llvmc's Base plugin
   1760 AC_CONFIG_FILES([tools/llvmc/src/Base.td])
   1761 
   1762 dnl Do the first stage of configuration for llvm-config.in.
   1763 AC_CONFIG_FILES([tools/llvm-config/llvm-config.in])
   1764 
   1765 dnl Do special configuration of Makefiles
   1766 AC_CONFIG_COMMANDS([setup],,[llvm_src="${srcdir}"])
   1767 AC_CONFIG_MAKEFILE(Makefile)
   1768 AC_CONFIG_MAKEFILE(Makefile.common)
   1769 AC_CONFIG_MAKEFILE(examples/Makefile)
   1770 AC_CONFIG_MAKEFILE(lib/Makefile)
   1771 AC_CONFIG_MAKEFILE(runtime/Makefile)
   1772 AC_CONFIG_MAKEFILE(test/Makefile)
   1773 AC_CONFIG_MAKEFILE(test/Makefile.tests)
   1774 AC_CONFIG_MAKEFILE(unittests/Makefile)
   1775 AC_CONFIG_MAKEFILE(tools/Makefile)
   1776 AC_CONFIG_MAKEFILE(utils/Makefile)
   1777 AC_CONFIG_MAKEFILE(projects/Makefile)
   1778 AC_CONFIG_MAKEFILE(bindings/Makefile)
   1779 AC_CONFIG_MAKEFILE(bindings/ocaml/Makefile.ocaml)
   1780 
   1781 dnl Finally, crank out the output
   1782 AC_OUTPUT
   1783