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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 address for reporting bugs.
     34 AC_INIT([LLVM],[3.3svn],[http://llvm.org/bugs/])
     35 AC_DEFINE([LLVM_VERSION_MAJOR], [3], [Major version of the LLVM API])
     36 AC_DEFINE([LLVM_VERSION_MINOR], [3], [Minor version of the LLVM API])
     37 
     38 dnl Provide a copyright substitution and ensure the copyright notice is included
     39 dnl in the output of --version option of the generated configure script.
     40 AC_SUBST(LLVM_COPYRIGHT,["Copyright (c) 2003-2013 University of Illinois at Urbana-Champaign."])
     41 AC_COPYRIGHT([Copyright (c) 2003-2013 University of Illinois at Urbana-Champaign.])
     42 
     43 dnl Indicate that we require autoconf 2.60 or later.
     44 AC_PREREQ(2.60)
     45 
     46 dnl Verify that the source directory is valid. This makes sure that we are
     47 dnl configuring LLVM and not some other package (it validates --srcdir argument)
     48 AC_CONFIG_SRCDIR([lib/IR/Module.cpp])
     49 
     50 dnl Place all of the extra autoconf files into the config subdirectory. Tell
     51 dnl various tools where the m4 autoconf macros are.
     52 AC_CONFIG_AUX_DIR([autoconf])
     53 
     54 dnl Quit if the source directory has already been configured.
     55 dnl NOTE: This relies upon undocumented autoconf behavior.
     56 if test ${srcdir} != "." ; then
     57   if test -f ${srcdir}/include/llvm/Config/config.h ; then
     58     AC_MSG_ERROR([Already configured in ${srcdir}])
     59   fi
     60 fi
     61 
     62 dnl Default to empty (i.e. assigning the null string to) CFLAGS and CXXFLAGS,
     63 dnl instead of the autoconf default (for example, '-g -O2' for CC=gcc).
     64 ${CFLAGS=}
     65 ${CXXFLAGS=}
     66 
     67 dnl We need to check for the compiler up here to avoid anything else
     68 dnl starting with a different one.
     69 AC_PROG_CC(clang llvm-gcc gcc)
     70 AC_PROG_CXX(clang++ llvm-g++ g++)
     71 AC_PROG_CPP
     72 
     73 dnl If CXX is Clang, check that it can find and parse C++ standard library
     74 dnl headers.
     75 if test "$CXX" = "clang++" ; then
     76   AC_MSG_CHECKING([whether clang works])
     77   AC_LANG_PUSH([C++])
     78   dnl Note that space between 'include' and '(' is required.  There's a broken
     79   dnl regex in aclocal that otherwise will think that we call m4's include
     80   dnl builtin.
     81   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <limits>
     82 #if __has_include (<cxxabi.h>)
     83 #include <cxxabi.h>
     84 #endif
     85 #if __has_include (<unwind.h>)
     86 #include <unwind.h>
     87 #endif
     88 ]])],
     89 [
     90   AC_MSG_RESULT([yes])
     91 ],
     92 [
     93   AC_MSG_RESULT([no])
     94   AC_MSG_ERROR([Selected compiler could not find or parse C++ standard library headers.  Rerun with CC=c-compiler CXX=c++-compiler ./configure ...])
     95 ])
     96   AC_LANG_POP([C++])
     97 fi
     98 
     99 dnl Configure all of the projects present in our source tree. While we could
    100 dnl just AC_CONFIG_SUBDIRS on the set of directories in projects that have a
    101 dnl configure script, that usage of the AC_CONFIG_SUBDIRS macro is deprecated.
    102 dnl Instead we match on the known projects.
    103 
    104 dnl
    105 dnl One tricky part of doing this is that some projects depend upon other
    106 dnl projects.  For example, several projects rely upon the LLVM test suite.
    107 dnl We want to configure those projects first so that their object trees are
    108 dnl created before running the configure scripts of projects that depend upon
    109 dnl them.
    110 dnl
    111 
    112 dnl Several projects use llvm-gcc, so configure that first
    113 if test -d ${srcdir}/projects/llvm-gcc ; then
    114   AC_CONFIG_SUBDIRS([projects/llvm-gcc])
    115 fi
    116 
    117 dnl Several projects use the LLVM test suite, so configure it next.
    118 if test -d ${srcdir}/projects/test-suite ; then
    119   AC_CONFIG_SUBDIRS([projects/test-suite])
    120 fi
    121 
    122 dnl llvm-test is the old name of the test-suite, kept here for backwards
    123 dnl compatibility
    124 if test -d ${srcdir}/projects/llvm-test ; then
    125   AC_CONFIG_SUBDIRS([projects/llvm-test])
    126 fi
    127 
    128 dnl Some projects use poolalloc; configure that next
    129 if test -d ${srcdir}/projects/poolalloc ; then
    130   AC_CONFIG_SUBDIRS([projects/poolalloc])
    131 fi
    132 
    133 if test -d ${srcdir}/projects/llvm-poolalloc ; then
    134   AC_CONFIG_SUBDIRS([projects/llvm-poolalloc])
    135 fi
    136 
    137 dnl Check for all other projects
    138 for i in `ls ${srcdir}/projects`
    139 do
    140   if test -d ${srcdir}/projects/${i} ; then
    141     case ${i} in
    142       sample)       AC_CONFIG_SUBDIRS([projects/sample])    ;;
    143       privbracket)  AC_CONFIG_SUBDIRS([projects/privbracket]) ;;
    144       llvm-stacker) AC_CONFIG_SUBDIRS([projects/llvm-stacker]) ;;
    145       llvm-reopt)   AC_CONFIG_SUBDIRS([projects/llvm-reopt]);;
    146       llvm-java)    AC_CONFIG_SUBDIRS([projects/llvm-java]) ;;
    147       llvm-tv)      AC_CONFIG_SUBDIRS([projects/llvm-tv])   ;;
    148       safecode)     AC_CONFIG_SUBDIRS([projects/safecode]) ;;
    149       llvm-kernel)  AC_CONFIG_SUBDIRS([projects/llvm-kernel]) ;;
    150       compiler-rt)       ;;
    151       llvm-gcc)       ;;
    152       test-suite)     ;;
    153       llvm-test)      ;;
    154       poolalloc)      ;;
    155       llvm-poolalloc) ;;
    156       *)
    157         AC_MSG_WARN([Unknown project (${i}) won't be configured automatically])
    158         ;;
    159     esac
    160   fi
    161 done
    162 
    163 dnl Disable the build of polly, even if it is checked out into tools/polly.
    164 AC_ARG_ENABLE(polly,
    165               AS_HELP_STRING([--enable-polly],
    166                              [Use polly if available (default is YES)]),,
    167                              enableval=default)
    168 case "$enableval" in
    169   yes) AC_SUBST(ENABLE_POLLY,[1]) ;;
    170   no)  AC_SUBST(ENABLE_POLLY,[0]) ;;
    171   default) AC_SUBST(ENABLE_POLLY,[1]) ;;
    172   *) AC_MSG_ERROR([Invalid setting for --enable-polly. Use "yes" or "no"]) ;;
    173 esac
    174 
    175 
    176 dnl Check if polly is checked out into tools/polly and configure it if
    177 dnl available.
    178 if (test -d ${srcdir}/tools/polly) && (test $ENABLE_POLLY -eq 1) ; then
    179   AC_SUBST(LLVM_HAS_POLLY,1)
    180   AC_CONFIG_SUBDIRS([tools/polly])
    181 fi
    182 
    183 dnl===-----------------------------------------------------------------------===
    184 dnl===
    185 dnl=== SECTION 2: Architecture, target, and host checks
    186 dnl===
    187 dnl===-----------------------------------------------------------------------===
    188 
    189 dnl Check the target for which we're compiling and the host that will do the
    190 dnl compilations. This will tell us which LLVM compiler will be used for
    191 dnl compiling SSA into object code. This needs to be done early because
    192 dnl following tests depend on it.
    193 AC_CANONICAL_TARGET
    194 
    195 dnl Determine the platform type and cache its value. This helps us configure
    196 dnl the System library to the correct build platform.
    197 AC_CACHE_CHECK([type of operating system we're going to host on],
    198                [llvm_cv_os_type],
    199 [case $host in
    200   *-*-aix*)
    201     llvm_cv_link_all_option="-Wl,--whole-archive"
    202     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    203     llvm_cv_os_type="AIX"
    204     llvm_cv_platform_type="Unix" ;;
    205   *-*-irix*)
    206     llvm_cv_link_all_option="-Wl,--whole-archive"
    207     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    208     llvm_cv_os_type="IRIX"
    209     llvm_cv_platform_type="Unix" ;;
    210   *-*-cygwin*)
    211     llvm_cv_link_all_option="-Wl,--whole-archive"
    212     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    213     llvm_cv_os_type="Cygwin"
    214     llvm_cv_platform_type="Unix" ;;
    215   *-*-darwin*)
    216     llvm_cv_link_all_option="-Wl,-all_load"
    217     llvm_cv_no_link_all_option="-Wl,-noall_load"
    218     llvm_cv_os_type="Darwin"
    219     llvm_cv_platform_type="Unix" ;;
    220   *-*-minix*)
    221     llvm_cv_link_all_option="-Wl,-all_load"
    222     llvm_cv_no_link_all_option="-Wl,-noall_load"
    223     llvm_cv_os_type="Minix"
    224     llvm_cv_platform_type="Unix" ;;
    225   *-*-freebsd* | *-*-kfreebsd-gnu)
    226     llvm_cv_link_all_option="-Wl,--whole-archive"
    227     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    228     llvm_cv_os_type="FreeBSD"
    229     llvm_cv_platform_type="Unix" ;;
    230   *-*-openbsd*)
    231     llvm_cv_link_all_option="-Wl,--whole-archive"
    232     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    233     llvm_cv_os_type="OpenBSD"
    234     llvm_cv_platform_type="Unix" ;;
    235   *-*-netbsd*)
    236     llvm_cv_link_all_option="-Wl,--whole-archive"
    237     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    238     llvm_cv_os_type="NetBSD"
    239     llvm_cv_platform_type="Unix" ;;
    240   *-*-dragonfly*)
    241     llvm_cv_link_all_option="-Wl,--whole-archive"
    242     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    243     llvm_cv_os_type="DragonFly"
    244     llvm_cv_platform_type="Unix" ;;
    245   *-*-hpux*)
    246     llvm_cv_link_all_option="-Wl,--whole-archive"
    247     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    248     llvm_cv_os_type="HP-UX"
    249     llvm_cv_platform_type="Unix" ;;
    250   *-*-interix*)
    251     llvm_cv_link_all_option="-Wl,--whole-archive"
    252     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    253     llvm_cv_os_type="Interix"
    254     llvm_cv_platform_type="Unix" ;;
    255   *-*-linux*)
    256     llvm_cv_link_all_option="-Wl,--whole-archive"
    257     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    258     llvm_cv_os_type="Linux"
    259     llvm_cv_platform_type="Unix" ;;
    260   *-*-gnu*)
    261     llvm_cv_link_all_option="-Wl,--whole-archive"
    262     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    263     llvm_cv_os_type="GNU"
    264     llvm_cv_platform_type="Unix" ;;
    265   *-*-solaris*)
    266     llvm_cv_link_all_option="-Wl,-z,allextract"
    267     llvm_cv_no_link_all_option="-Wl,-z,defaultextract"
    268     llvm_cv_os_type="SunOS"
    269     llvm_cv_platform_type="Unix" ;;
    270   *-*-auroraux*)
    271     llvm_cv_link_all_option="-Wl,-z,allextract"
    272     llvm_cv_link_all_option="-Wl,-z,defaultextract"
    273     llvm_cv_os_type="AuroraUX"
    274     llvm_cv_platform_type="Unix" ;;
    275   *-*-win32*)
    276     llvm_cv_link_all_option="-Wl,--whole-archive"
    277     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    278     llvm_cv_os_type="Win32"
    279     llvm_cv_platform_type="Win32" ;;
    280   *-*-mingw*)
    281     llvm_cv_link_all_option="-Wl,--whole-archive"
    282     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    283     llvm_cv_os_type="MingW"
    284     llvm_cv_platform_type="Win32" ;;
    285   *-*-haiku*)
    286     llvm_cv_link_all_option="-Wl,--whole-archive"
    287     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    288     llvm_cv_os_type="Haiku"
    289     llvm_cv_platform_type="Unix" ;;
    290   *-unknown-eabi*)
    291     llvm_cv_link_all_option="-Wl,--whole-archive"
    292     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    293     llvm_cv_os_type="Freestanding"
    294     llvm_cv_platform_type="Unix" ;;
    295   *-unknown-elf*)
    296     llvm_cv_link_all_option="-Wl,--whole-archive"
    297     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
    298     llvm_cv_os_type="Freestanding"
    299     llvm_cv_platform_type="Unix" ;;
    300   *)
    301     llvm_cv_link_all_option=""
    302     llvm_cv_no_link_all_option=""
    303     llvm_cv_os_type="Unknown"
    304     llvm_cv_platform_type="Unknown" ;;
    305 esac])
    306 
    307 AC_CACHE_CHECK([type of operating system we're going to target],
    308                [llvm_cv_target_os_type],
    309 [case $target in
    310   *-*-aix*)
    311     llvm_cv_target_os_type="AIX" ;;
    312   *-*-irix*)
    313     llvm_cv_target_os_type="IRIX" ;;
    314   *-*-cygwin*)
    315     llvm_cv_target_os_type="Cygwin" ;;
    316   *-*-darwin*)
    317     llvm_cv_target_os_type="Darwin" ;;
    318   *-*-minix*)
    319     llvm_cv_target_os_type="Minix" ;;
    320   *-*-freebsd* | *-*-kfreebsd-gnu)
    321     llvm_cv_target_os_type="FreeBSD" ;;
    322   *-*-openbsd*)
    323     llvm_cv_target_os_type="OpenBSD" ;;
    324   *-*-netbsd*)
    325     llvm_cv_target_os_type="NetBSD" ;;
    326   *-*-dragonfly*)
    327     llvm_cv_target_os_type="DragonFly" ;;
    328   *-*-hpux*)
    329     llvm_cv_target_os_type="HP-UX" ;;
    330   *-*-interix*)
    331     llvm_cv_target_os_type="Interix" ;;
    332   *-*-linux*)
    333     llvm_cv_target_os_type="Linux" ;;
    334   *-*-gnu*)
    335     llvm_cv_target_os_type="GNU" ;;
    336   *-*-solaris*)
    337     llvm_cv_target_os_type="SunOS" ;;
    338   *-*-auroraux*)
    339     llvm_cv_target_os_type="AuroraUX" ;;
    340   *-*-win32*)
    341     llvm_cv_target_os_type="Win32" ;;
    342   *-*-mingw*)
    343     llvm_cv_target_os_type="MingW" ;;
    344   *-*-haiku*)
    345     llvm_cv_target_os_type="Haiku" ;;
    346   *-*-rtems*)
    347     llvm_cv_target_os_type="RTEMS" ;;
    348   *-*-nacl*)
    349     llvm_cv_target_os_type="NativeClient" ;;
    350   *-unknown-eabi*)
    351     llvm_cv_target_os_type="Freestanding" ;;
    352   *)
    353     llvm_cv_target_os_type="Unknown" ;;
    354 esac])
    355 
    356 dnl Make sure we aren't attempting to configure for an unknown system
    357 if test "$llvm_cv_os_type" = "Unknown" ; then
    358   AC_MSG_ERROR([Operating system is unknown, configure can't continue])
    359 fi
    360 
    361 dnl Set the "OS" Makefile variable based on the platform type so the
    362 dnl makefile can configure itself to specific build hosts
    363 AC_SUBST(OS,$llvm_cv_os_type)
    364 AC_SUBST(HOST_OS,$llvm_cv_os_type)
    365 AC_SUBST(TARGET_OS,$llvm_cv_target_os_type)
    366 
    367 dnl Set the LINKALL and NOLINKALL Makefile variables based on the platform
    368 AC_SUBST(LINKALL,$llvm_cv_link_all_option)
    369 AC_SUBST(NOLINKALL,$llvm_cv_no_link_all_option)
    370 
    371 dnl Set the "LLVM_ON_*" variables based on llvm_cv_platform_type
    372 dnl This is used by lib/Support to determine the basic kind of implementation
    373 dnl to use.
    374 case $llvm_cv_platform_type in
    375   Unix)
    376     AC_DEFINE([LLVM_ON_UNIX],[1],[Define if this is Unixish platform])
    377     AC_SUBST(LLVM_ON_UNIX,[1])
    378     AC_SUBST(LLVM_ON_WIN32,[0])
    379     ;;
    380   Win32)
    381     AC_DEFINE([LLVM_ON_WIN32],[1],[Define if this is Win32ish platform])
    382     AC_SUBST(LLVM_ON_UNIX,[0])
    383     AC_SUBST(LLVM_ON_WIN32,[1])
    384     ;;
    385 esac
    386 
    387 dnl Determine what our target architecture is and configure accordingly.
    388 dnl This will allow Makefiles to make a distinction between the hardware and
    389 dnl the OS.
    390 AC_CACHE_CHECK([target architecture],[llvm_cv_target_arch],
    391 [case $target in
    392   i?86-*)                 llvm_cv_target_arch="x86" ;;
    393   amd64-* | x86_64-*)     llvm_cv_target_arch="x86_64" ;;
    394   sparc*-*)               llvm_cv_target_arch="Sparc" ;;
    395   powerpc*-*)             llvm_cv_target_arch="PowerPC" ;;
    396   arm*-*)                 llvm_cv_target_arch="ARM" ;;
    397   aarch64*-*)             llvm_cv_target_arch="AArch64" ;;
    398   mips-* | mips64-*)      llvm_cv_target_arch="Mips" ;;
    399   mipsel-* | mips64el-*)  llvm_cv_target_arch="Mips" ;;
    400   xcore-*)                llvm_cv_target_arch="XCore" ;;
    401   msp430-*)               llvm_cv_target_arch="MSP430" ;;
    402   hexagon-*)              llvm_cv_target_arch="Hexagon" ;;
    403   mblaze-*)               llvm_cv_target_arch="MBlaze" ;;
    404   nvptx-*)                llvm_cv_target_arch="NVPTX" ;;
    405   *)                      llvm_cv_target_arch="Unknown" ;;
    406 esac])
    407 
    408 if test "$llvm_cv_target_arch" = "Unknown" ; then
    409   AC_MSG_WARN([Configuring LLVM for an unknown target archicture])
    410 fi
    411 
    412 dnl Determine the LLVM native architecture for the target
    413 case "$llvm_cv_target_arch" in
    414     x86)     LLVM_NATIVE_ARCH="X86" ;;
    415     x86_64)  LLVM_NATIVE_ARCH="X86" ;;
    416     *)       LLVM_NATIVE_ARCH="$llvm_cv_target_arch" ;;
    417 esac
    418 
    419 dnl Define a substitution, ARCH, for the target architecture
    420 AC_SUBST(ARCH,$llvm_cv_target_arch)
    421 
    422 dnl Determine what our host architecture.
    423 dnl This will allow MCJIT regress tests runs only for supported
    424 dnl platforms.
    425 case $host in
    426   i?86-*)                 host_arch="x86" ;;
    427   amd64-* | x86_64-*)     host_arch="x86_64" ;;
    428   sparc*-*)               host_arch="Sparc" ;;
    429   powerpc*-*)             host_arch="PowerPC" ;;
    430   arm*-*)                 host_arch="ARM" ;;
    431   aarch64*-*)             host_arch="AArch64" ;;
    432   mips-* | mips64-*)      host_arch="Mips" ;;
    433   mipsel-* | mips64el-*)  host_arch="Mips" ;;
    434   xcore-*)                host_arch="XCore" ;;
    435   msp430-*)               host_arch="MSP430" ;;
    436   hexagon-*)              host_arch="Hexagon" ;;
    437   mblaze-*)               host_arch="MBlaze" ;;
    438   *)                      host_arch="Unknown" ;;
    439 esac
    440 
    441 if test "$host_arch" = "Unknown" ; then
    442   AC_MSG_WARN([Configuring LLVM for an unknown host archicture])
    443 fi
    444 
    445 AC_SUBST(HOST_ARCH,$host_arch)
    446 
    447 dnl Check for the endianness of the target
    448 AC_C_BIGENDIAN(AC_SUBST([ENDIAN],[big]),AC_SUBST([ENDIAN],[little]))
    449 
    450 dnl Check for build platform executable suffix if we're cross-compiling
    451 if test "$cross_compiling" = yes; then
    452   AC_SUBST(LLVM_CROSS_COMPILING, [1])
    453   AC_BUILD_EXEEXT
    454   ac_build_prefix=${build_alias}-
    455   AC_CHECK_PROG(BUILD_CXX, ${ac_build_prefix}g++, ${ac_build_prefix}g++)
    456   if test -z "$BUILD_CXX"; then
    457      AC_CHECK_PROG(BUILD_CXX, g++, g++)
    458      if test -z "$BUILD_CXX"; then
    459        AC_CHECK_PROG(BUILD_CXX, c++, c++, , , /usr/ucb/c++)
    460      fi
    461   fi
    462 else
    463   AC_SUBST(LLVM_CROSS_COMPILING, [0])
    464 fi
    465 
    466 dnl Check to see if there's a .svn or .git directory indicating that this
    467 dnl build is being done from a checkout. This sets up several defaults for
    468 dnl the command line switches. When we build with a checkout directory,
    469 dnl we get a debug with assertions turned on. Without, we assume a source
    470 dnl release and we get an optimized build without assertions.
    471 dnl See --enable-optimized and --enable-assertions below
    472 if test -d ".svn" -o -d "${srcdir}/.svn" -o -d ".git" -o -d "${srcdir}/.git"; then
    473   cvsbuild="yes"
    474   optimize="no"
    475   AC_SUBST(CVSBUILD,[[CVSBUILD=1]])
    476 else
    477   cvsbuild="no"
    478   optimize="yes"
    479 fi
    480 
    481 dnl===-----------------------------------------------------------------------===
    482 dnl===
    483 dnl=== SECTION 3: Command line arguments for the configure script.
    484 dnl===
    485 dnl===-----------------------------------------------------------------------===
    486 
    487 dnl --enable-libcpp : check whether or not to use libc++ on the command line
    488 AC_ARG_ENABLE(libcpp,
    489               AS_HELP_STRING([--enable-libcpp],
    490                              [Use libc++ if available (default is NO)]),,
    491                              enableval=default)
    492 case "$enableval" in
    493   yes) AC_SUBST(ENABLE_LIBCPP,[1]) ;;
    494   no)  AC_SUBST(ENABLE_LIBCPP,[0]) ;;
    495   default) AC_SUBST(ENABLE_LIBCPP,[0]);;
    496   *) AC_MSG_ERROR([Invalid setting for --enable-libcpp. Use "yes" or "no"]) ;;
    497 esac
    498 
    499 dnl --enable-cxx11 : check whether or not to use -std=c++11 on the command line
    500 AC_ARG_ENABLE(cxx11,
    501               AS_HELP_STRING([--enable-cxx11],
    502                              [Use c++11 if available (default is NO)]),,
    503                              enableval=default)
    504 case "$enableval" in
    505   yes) AC_SUBST(ENABLE_CXX11,[1]) ;;
    506   no)  AC_SUBST(ENABLE_CXX11,[0]) ;;
    507   default) AC_SUBST(ENABLE_CXX11,[0]);;
    508   *) AC_MSG_ERROR([Invalid setting for --enable-cxx11. Use "yes" or "no"]) ;;
    509 esac
    510 
    511 dnl --enable-clang-arcmt: check whether to enable clang arcmt
    512 clang_arcmt="yes"
    513 AC_ARG_ENABLE(clang-arcmt,
    514               AS_HELP_STRING([--enable-clang-arcmt],
    515                              [Enable building of clang ARCMT (default is YES)]),
    516                              clang_arcmt="$enableval",
    517                              enableval="yes")
    518 case "$enableval" in
    519   yes) AC_SUBST(ENABLE_CLANG_ARCMT,[1]) ;;
    520   no)  AC_SUBST(ENABLE_CLANG_ARCMT,[0]) ;;
    521   default) AC_SUBST(ENABLE_CLANG_ARCMT,[1]);;
    522   *) AC_MSG_ERROR([Invalid setting for --enable-clang-arcmt. Use "yes" or "no"]) ;;
    523 esac
    524 
    525 dnl --enable-clang-static-analyzer: check whether to enable static-analyzer
    526 clang_static_analyzer="yes"
    527 AC_ARG_ENABLE(clang-static-analyzer,
    528               AS_HELP_STRING([--enable-clang-static-analyzer],
    529                              [Enable building of clang Static Analyzer (default is YES)]),
    530                              clang_static_analyzer="$enableval",
    531                              enableval="yes")
    532 case "$enableval" in
    533   yes) AC_SUBST(ENABLE_CLANG_STATIC_ANALYZER,[1]) ;;
    534   no)  AC_SUBST(ENABLE_CLANG_STATIC_ANALYZER,[0]) ;;
    535   default) AC_SUBST(ENABLE_CLANG_STATIC_ANALYZER,[1]);;
    536   *) AC_MSG_ERROR([Invalid setting for --enable-clang-static-analyzer. Use "yes" or "no"]) ;;
    537 esac
    538 
    539 dnl --enable-clang-rewriter: check whether to enable clang rewriter
    540 AC_ARG_ENABLE(clang-rewriter,
    541               AS_HELP_STRING([--enable-clang-rewriter],
    542                              [Enable building of clang rewriter (default is YES)]),,
    543                              enableval="yes")
    544 case "$enableval" in
    545   yes) AC_SUBST(ENABLE_CLANG_REWRITER,[1]) ;;
    546   no)  
    547     if test ${clang_arcmt} != "no" ; then
    548       AC_MSG_ERROR([Cannot enable clang ARC Migration Tool while disabling rewriter.])
    549     fi
    550     if test ${clang_static_analyzer} != "no" ; then
    551       AC_MSG_ERROR([Cannot enable clang static analyzer while disabling rewriter.])
    552     fi
    553     AC_SUBST(ENABLE_CLANG_REWRITER,[0]) 
    554     ;;
    555   default) AC_SUBST(ENABLE_CLANG_REWRITER,[1]);;
    556   *) AC_MSG_ERROR([Invalid setting for --enable-clang-rewriter. Use "yes" or "no"]) ;;
    557 esac
    558 
    559 dnl --enable-optimized : check whether they want to do an optimized build:
    560 AC_ARG_ENABLE(optimized, AS_HELP_STRING(
    561  --enable-optimized,[Compile with optimizations enabled (default is NO)]),,enableval=$optimize)
    562 if test ${enableval} = "no" ; then
    563   AC_SUBST(ENABLE_OPTIMIZED,[[]])
    564 else
    565   AC_SUBST(ENABLE_OPTIMIZED,[[ENABLE_OPTIMIZED=1]])
    566 fi
    567 
    568 dnl --enable-profiling : check whether they want to do a profile build:
    569 AC_ARG_ENABLE(profiling, AS_HELP_STRING(
    570  --enable-profiling,[Compile with profiling enabled (default is NO)]),,enableval="no")
    571 if test ${enableval} = "no" ; then
    572   AC_SUBST(ENABLE_PROFILING,[[]])
    573 else
    574   AC_SUBST(ENABLE_PROFILING,[[ENABLE_PROFILING=1]])
    575 fi
    576 
    577 dnl --enable-assertions : check whether they want to turn on assertions or not:
    578 AC_ARG_ENABLE(assertions,AS_HELP_STRING(
    579   --enable-assertions,[Compile with assertion checks enabled (default is YES)]),, enableval="yes")
    580 if test ${enableval} = "yes" ; then
    581   AC_SUBST(DISABLE_ASSERTIONS,[[]])
    582 else
    583   AC_SUBST(DISABLE_ASSERTIONS,[[DISABLE_ASSERTIONS=1]])
    584 fi
    585 
    586 dnl --enable-werror : check whether we want Werror on by default
    587 AC_ARG_ENABLE(werror,AS_HELP_STRING(
    588   --enable-werror,[Compile with -Werror enabled (default is NO)]),, enableval="no")
    589 case "$enableval" in
    590   yes) AC_SUBST(ENABLE_WERROR,[1]) ;;
    591   no)  AC_SUBST(ENABLE_WERROR,[0]) ;;
    592   default) AC_SUBST(ENABLE_WERROR,[0]);;
    593   *) AC_MSG_ERROR([Invalid setting for --enable-werror. Use "yes" or "no"]) ;;
    594 esac
    595 
    596 dnl --enable-expensive-checks : check whether they want to turn on expensive debug checks:
    597 AC_ARG_ENABLE(expensive-checks,AS_HELP_STRING(
    598   --enable-expensive-checks,[Compile with expensive debug checks enabled (default is NO)]),, enableval="no")
    599 if test ${enableval} = "yes" ; then
    600   AC_SUBST(ENABLE_EXPENSIVE_CHECKS,[[ENABLE_EXPENSIVE_CHECKS=1]])
    601   AC_SUBST(EXPENSIVE_CHECKS,[[yes]])
    602 else
    603   AC_SUBST(ENABLE_EXPENSIVE_CHECKS,[[]])
    604   AC_SUBST(EXPENSIVE_CHECKS,[[no]])
    605 fi
    606 
    607 dnl --enable-debug-runtime : should runtime libraries have debug symbols?
    608 AC_ARG_ENABLE(debug-runtime,
    609    AS_HELP_STRING(--enable-debug-runtime,[Build runtime libs with debug symbols (default is NO)]),,enableval=no)
    610 if test ${enableval} = "no" ; then
    611   AC_SUBST(DEBUG_RUNTIME,[[]])
    612 else
    613   AC_SUBST(DEBUG_RUNTIME,[[DEBUG_RUNTIME=1]])
    614 fi
    615 
    616 dnl --enable-debug-symbols : should even optimized compiler libraries
    617 dnl have debug symbols?
    618 AC_ARG_ENABLE(debug-symbols,
    619    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)
    620 if test ${enableval} = "no" ; then
    621   AC_SUBST(DEBUG_SYMBOLS,[[]])
    622 else
    623   AC_SUBST(DEBUG_SYMBOLS,[[DEBUG_SYMBOLS=1]])
    624 fi
    625 
    626 dnl --enable-keep-symbols : do not strip installed executables
    627 AC_ARG_ENABLE(keep-symbols,
    628    AS_HELP_STRING(--enable-keep-symbols,[Do not strip installed executables)]),,enableval=no)
    629 if test ${enableval} = "no" ; then
    630   AC_SUBST(KEEP_SYMBOLS,[[]])
    631 else
    632   AC_SUBST(KEEP_SYMBOLS,[[KEEP_SYMBOLS=1]])
    633 fi
    634 
    635 dnl --enable-jit: check whether they want to enable the jit
    636 AC_ARG_ENABLE(jit,
    637   AS_HELP_STRING(--enable-jit,
    638                  [Enable Just In Time Compiling (default is YES)]),,
    639   enableval=default)
    640 if test ${enableval} = "no"
    641 then
    642   AC_SUBST(JIT,[[]])
    643 else
    644   case "$llvm_cv_target_arch" in
    645     x86)         AC_SUBST(TARGET_HAS_JIT,1) ;;
    646     Sparc)       AC_SUBST(TARGET_HAS_JIT,0) ;;
    647     PowerPC)     AC_SUBST(TARGET_HAS_JIT,1) ;;
    648     x86_64)      AC_SUBST(TARGET_HAS_JIT,1) ;;
    649     ARM)         AC_SUBST(TARGET_HAS_JIT,1) ;;
    650     AArch64)     AC_SUBST(TARGET_HAS_JIT,0) ;;
    651     Mips)        AC_SUBST(TARGET_HAS_JIT,1) ;;
    652     XCore)       AC_SUBST(TARGET_HAS_JIT,0) ;;
    653     MSP430)      AC_SUBST(TARGET_HAS_JIT,0) ;;
    654     Hexagon)     AC_SUBST(TARGET_HAS_JIT,0) ;;
    655     MBlaze)      AC_SUBST(TARGET_HAS_JIT,0) ;;
    656     NVPTX)       AC_SUBST(TARGET_HAS_JIT,0) ;;
    657     *)           AC_SUBST(TARGET_HAS_JIT,0) ;;
    658   esac
    659 fi
    660 
    661 dnl Allow enablement of building and installing docs
    662 AC_ARG_ENABLE(docs,
    663               AS_HELP_STRING([--enable-docs],
    664                              [Build documents (default is YES)]),,
    665                              enableval=default)
    666 case "$enableval" in
    667   yes) AC_SUBST(ENABLE_DOCS,[1]) ;;
    668   no)  AC_SUBST(ENABLE_DOCS,[0]) ;;
    669   default) AC_SUBST(ENABLE_DOCS,[1]) ;;
    670   *) AC_MSG_ERROR([Invalid setting for --enable-docs. Use "yes" or "no"]) ;;
    671 esac
    672 
    673 dnl Allow enablement of doxygen generated documentation
    674 AC_ARG_ENABLE(doxygen,
    675               AS_HELP_STRING([--enable-doxygen],
    676                              [Build doxygen documentation (default is NO)]),,
    677                              enableval=default)
    678 case "$enableval" in
    679   yes) AC_SUBST(ENABLE_DOXYGEN,[1]) ;;
    680   no)  AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
    681   default) AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
    682   *) AC_MSG_ERROR([Invalid setting for --enable-doxygen. Use "yes" or "no"]) ;;
    683 esac
    684 
    685 dnl Allow disablement of threads
    686 AC_ARG_ENABLE(threads,
    687               AS_HELP_STRING([--enable-threads],
    688                              [Use threads if available (default is YES)]),,
    689                              enableval=default)
    690 case "$enableval" in
    691   yes) AC_SUBST(LLVM_ENABLE_THREADS,[1]) ;;
    692   no)  AC_SUBST(LLVM_ENABLE_THREADS,[0]) ;;
    693   default) AC_SUBST(LLVM_ENABLE_THREADS,[1]) ;;
    694   *) AC_MSG_ERROR([Invalid setting for --enable-threads. Use "yes" or "no"]) ;;
    695 esac
    696 AC_DEFINE_UNQUOTED([LLVM_ENABLE_THREADS],$LLVM_ENABLE_THREADS,
    697                    [Define if threads enabled])
    698 
    699 dnl Allow disablement of pthread.h
    700 AC_ARG_ENABLE(pthreads,
    701               AS_HELP_STRING([--enable-pthreads],
    702                              [Use pthreads if available (default is YES)]),,
    703                              enableval=default)
    704 case "$enableval" in
    705   yes) AC_SUBST(ENABLE_PTHREADS,[1]) ;;
    706   no)  AC_SUBST(ENABLE_PTHREADS,[0]) ;;
    707   default) AC_SUBST(ENABLE_PTHREADS,[1]) ;;
    708   *) AC_MSG_ERROR([Invalid setting for --enable-pthreads. Use "yes" or "no"]) ;;
    709 esac
    710 
    711 dnl Allow building without position independent code
    712 AC_ARG_ENABLE(pic,
    713   AS_HELP_STRING([--enable-pic],
    714                  [Build LLVM with Position Independent Code (default is YES)]),,
    715                  enableval=default)
    716 case "$enableval" in
    717   yes) AC_SUBST(ENABLE_PIC,[1]) ;;
    718   no)  AC_SUBST(ENABLE_PIC,[0]) ;;
    719   default) AC_SUBST(ENABLE_PIC,[1]) ;;
    720   *) AC_MSG_ERROR([Invalid setting for --enable-pic. Use "yes" or "no"]) ;;
    721 esac
    722 AC_DEFINE_UNQUOTED([ENABLE_PIC],$ENABLE_PIC,
    723                    [Define if position independent code is enabled])
    724 
    725 dnl Allow building a shared library and linking tools against it.
    726 AC_ARG_ENABLE(shared,
    727   AS_HELP_STRING([--enable-shared],
    728                  [Build a shared library and link tools against it (default is NO)]),,
    729                  enableval=default)
    730 case "$enableval" in
    731   yes) AC_SUBST(ENABLE_SHARED,[1]) ;;
    732   no)  AC_SUBST(ENABLE_SHARED,[0]) ;;
    733   default) AC_SUBST(ENABLE_SHARED,[0]) ;;
    734   *) AC_MSG_ERROR([Invalid setting for --enable-shared. Use "yes" or "no"]) ;;
    735 esac
    736 
    737 dnl Allow libstdc++ is embedded in LLVM.dll.
    738 AC_ARG_ENABLE(embed-stdcxx,
    739   AS_HELP_STRING([--enable-embed-stdcxx],
    740                  [Build a shared library with embedded libstdc++ for Win32 DLL (default is NO)]),,
    741                  enableval=default)
    742 case "$enableval" in
    743   yes) AC_SUBST(ENABLE_EMBED_STDCXX,[1]) ;;
    744   no)  AC_SUBST(ENABLE_EMBED_STDCXX,[0]) ;;
    745   default) AC_SUBST(ENABLE_EMBED_STDCXX,[0]) ;;
    746   *) AC_MSG_ERROR([Invalid setting for --enable-embed-stdcxx. Use "yes" or "no"]) ;;
    747 esac
    748 
    749 dnl Enable embedding timestamp information into build.
    750 AC_ARG_ENABLE(timestamps,
    751   AS_HELP_STRING([--enable-timestamps],
    752                  [Enable embedding timestamp information in build (default is YES)]),,
    753                  enableval=default)
    754 case "$enableval" in
    755   yes) AC_SUBST(ENABLE_TIMESTAMPS,[1]) ;;
    756   no)  AC_SUBST(ENABLE_TIMESTAMPS,[0]) ;;
    757   default) AC_SUBST(ENABLE_TIMESTAMPS,[1]) ;;
    758   *) AC_MSG_ERROR([Invalid setting for --enable-timestamps. Use "yes" or "no"]) ;;
    759 esac
    760 AC_DEFINE_UNQUOTED([ENABLE_TIMESTAMPS],$ENABLE_TIMESTAMPS,
    761                    [Define if timestamp information (e.g., __DATE__) is allowed])
    762 
    763 dnl Enable embedding timestamp information into build.
    764 
    765 AC_ARG_ENABLE(backtraces,
    766   AS_HELP_STRING([--enable-backtraces],
    767                  [Enable embedding backtraces on crash (default is YES)]),,
    768                  enableval=default)
    769 case "$enableval" in
    770   yes) AC_SUBST(ENABLE_BACKTRACES,[1]) ;;
    771   no)  AC_SUBST(ENABLE_BACKTRACES,[0]) ;;
    772   default) AC_SUBST(ENABLE_BACKTRACES,[1]) ;;
    773   *) AC_MSG_ERROR([Invalid setting for --enable-backtraces. Use "yes" or "no"]) ;;
    774 esac
    775 AC_DEFINE_UNQUOTED([ENABLE_BACKTRACES],$ENABLE_BACKTRACES,
    776                    [Define if you want backtraces on crash])
    777 
    778 dnl Allow specific targets to be specified for building (or not)
    779 TARGETS_TO_BUILD=""
    780 AC_ARG_ENABLE([targets],AS_HELP_STRING([--enable-targets],
    781     [Build specific host targets: all or target1,target2,... Valid targets are:
    782      host, x86, x86_64, sparc, powerpc, arm, aarch64, mips, hexagon,
    783      xcore, msp430, nvptx, and cpp (default=all)]),,
    784     enableval=all)
    785 if test "$enableval" = host-only ; then
    786   enableval=host
    787 fi
    788 case "$enableval" in
    789   all) TARGETS_TO_BUILD="X86 Sparc PowerPC AArch64 ARM Mips XCore MSP430 CppBackend MBlaze NVPTX Hexagon" ;;
    790   *)for a_target in `echo $enableval|sed -e 's/,/ /g' ` ; do
    791       case "$a_target" in
    792         x86)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
    793         x86_64)   TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
    794         sparc)    TARGETS_TO_BUILD="Sparc $TARGETS_TO_BUILD" ;;
    795         powerpc)  TARGETS_TO_BUILD="PowerPC $TARGETS_TO_BUILD" ;;
    796         aarch64)  TARGETS_TO_BUILD="AArch64 $TARGETS_TO_BUILD" ;;
    797         arm)      TARGETS_TO_BUILD="ARM $TARGETS_TO_BUILD" ;;
    798         mips)     TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
    799         mipsel)   TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
    800         mips64)   TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
    801         mips64el) TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
    802         xcore)    TARGETS_TO_BUILD="XCore $TARGETS_TO_BUILD" ;;
    803         msp430)   TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
    804         cpp)      TARGETS_TO_BUILD="CppBackend $TARGETS_TO_BUILD" ;;
    805         hexagon)  TARGETS_TO_BUILD="Hexagon $TARGETS_TO_BUILD" ;;
    806         mblaze)   TARGETS_TO_BUILD="MBlaze $TARGETS_TO_BUILD" ;;
    807         nvptx)    TARGETS_TO_BUILD="NVPTX $TARGETS_TO_BUILD" ;;
    808         host) case "$llvm_cv_target_arch" in
    809             x86)         TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
    810             x86_64)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
    811             Sparc)       TARGETS_TO_BUILD="Sparc $TARGETS_TO_BUILD" ;;
    812             PowerPC)     TARGETS_TO_BUILD="PowerPC $TARGETS_TO_BUILD" ;;
    813             ARM)         TARGETS_TO_BUILD="ARM $TARGETS_TO_BUILD" ;;
    814             Mips)        TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
    815             MBlaze)      TARGETS_TO_BUILD="MBlaze $TARGETS_TO_BUILD" ;;
    816             XCore)       TARGETS_TO_BUILD="XCore $TARGETS_TO_BUILD" ;;
    817             MSP430)      TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
    818             Hexagon)     TARGETS_TO_BUILD="Hexagon $TARGETS_TO_BUILD" ;;
    819             NVPTX)       TARGETS_TO_BUILD="NVPTX $TARGETS_TO_BUILD" ;;
    820             *)       AC_MSG_ERROR([Can not set target to build]) ;;
    821           esac ;;
    822         *) AC_MSG_ERROR([Unrecognized target $a_target]) ;;
    823       esac
    824   done
    825   ;;
    826 esac
    827 
    828 AC_ARG_ENABLE([experimental-targets],AS_HELP_STRING([--enable-experimental-targets],
    829     [Build experimental host targets: disable or target1,target2,...
    830      (default=disable)]),,
    831     enableval=disable)
    832 
    833 if test ${enableval} != "disable"
    834 then
    835   TARGETS_TO_BUILD="$enableval $TARGETS_TO_BUILD"
    836 fi
    837 
    838 AC_SUBST(TARGETS_TO_BUILD,$TARGETS_TO_BUILD)
    839 
    840 dnl Determine whether we are building LLVM support for the native architecture.
    841 dnl If so, define LLVM_NATIVE_ARCH to that LLVM target.
    842 for a_target in $TARGETS_TO_BUILD; do
    843   if test "$a_target" = "$LLVM_NATIVE_ARCH"; then
    844     AC_DEFINE_UNQUOTED(LLVM_NATIVE_ARCH, $LLVM_NATIVE_ARCH,
    845       [LLVM architecture name for the native architecture, if available])
    846     LLVM_NATIVE_TARGET="LLVMInitialize${LLVM_NATIVE_ARCH}Target"
    847     LLVM_NATIVE_TARGETINFO="LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo"
    848     LLVM_NATIVE_TARGETMC="LLVMInitialize${LLVM_NATIVE_ARCH}TargetMC"
    849     LLVM_NATIVE_ASMPRINTER="LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter"
    850     if test -f ${srcdir}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/Makefile ; then
    851       LLVM_NATIVE_ASMPARSER="LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser"
    852     fi
    853     if test -f ${srcdir}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/Makefile ; then
    854       LLVM_NATIVE_DISASSEMBLER="LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler"
    855     fi
    856     AC_DEFINE_UNQUOTED(LLVM_NATIVE_TARGET, $LLVM_NATIVE_TARGET,
    857       [LLVM name for the native Target init function, if available])
    858     AC_DEFINE_UNQUOTED(LLVM_NATIVE_TARGETINFO, $LLVM_NATIVE_TARGETINFO,
    859       [LLVM name for the native TargetInfo init function, if available])
    860     AC_DEFINE_UNQUOTED(LLVM_NATIVE_TARGETMC, $LLVM_NATIVE_TARGETMC,
    861       [LLVM name for the native target MC init function, if available])
    862     AC_DEFINE_UNQUOTED(LLVM_NATIVE_ASMPRINTER, $LLVM_NATIVE_ASMPRINTER,
    863       [LLVM name for the native AsmPrinter init function, if available])
    864     if test -f ${srcdir}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/Makefile ; then
    865       AC_DEFINE_UNQUOTED(LLVM_NATIVE_ASMPARSER, $LLVM_NATIVE_ASMPARSER,
    866        [LLVM name for the native AsmParser init function, if available])
    867     fi
    868     if test -f ${srcdir}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/Makefile ; then
    869       AC_DEFINE_UNQUOTED(LLVM_NATIVE_DISASSEMBLER, $LLVM_NATIVE_DISASSEMBLER,
    870        [LLVM name for the native Disassembler init function, if available])
    871     fi
    872   fi
    873 done
    874 
    875 dnl Build the LLVM_TARGET and LLVM_... macros for Targets.def and the individual
    876 dnl target feature def files.
    877 LLVM_ENUM_TARGETS=""
    878 LLVM_ENUM_ASM_PRINTERS=""
    879 LLVM_ENUM_ASM_PARSERS=""
    880 LLVM_ENUM_DISASSEMBLERS=""
    881 for target_to_build in $TARGETS_TO_BUILD; do
    882   LLVM_ENUM_TARGETS="LLVM_TARGET($target_to_build) $LLVM_ENUM_TARGETS"
    883   if test -f ${srcdir}/lib/Target/${target_to_build}/*AsmPrinter.cpp ; then
    884     LLVM_ENUM_ASM_PRINTERS="LLVM_ASM_PRINTER($target_to_build) $LLVM_ENUM_ASM_PRINTERS";
    885   fi
    886   if test -f ${srcdir}/lib/Target/${target_to_build}/AsmParser/Makefile ; then
    887     LLVM_ENUM_ASM_PARSERS="LLVM_ASM_PARSER($target_to_build) $LLVM_ENUM_ASM_PARSERS";
    888   fi
    889   if test -f ${srcdir}/lib/Target/${target_to_build}/Disassembler/Makefile ; then
    890     LLVM_ENUM_DISASSEMBLERS="LLVM_DISASSEMBLER($target_to_build) $LLVM_ENUM_DISASSEMBLERS";
    891   fi
    892 done
    893 AC_SUBST(LLVM_ENUM_TARGETS)
    894 AC_SUBST(LLVM_ENUM_ASM_PRINTERS)
    895 AC_SUBST(LLVM_ENUM_ASM_PARSERS)
    896 AC_SUBST(LLVM_ENUM_DISASSEMBLERS)
    897 
    898 dnl Override the option to use for optimized builds.
    899 AC_ARG_WITH(optimize-option,
    900   AS_HELP_STRING([--with-optimize-option],
    901                  [Select the compiler options to use for optimized builds]),,
    902                  withval=default)
    903 AC_MSG_CHECKING([optimization flags])
    904 case "$withval" in
    905   default)
    906     case "$llvm_cv_os_type" in
    907     FreeBSD) optimize_option=-O2 ;;
    908     MingW) optimize_option=-O2 ;;
    909     *)     optimize_option=-O3 ;;
    910     esac ;;
    911   *) optimize_option="$withval" ;;
    912 esac
    913 AC_SUBST(OPTIMIZE_OPTION,$optimize_option)
    914 AC_MSG_RESULT([$optimize_option])
    915 
    916 dnl Specify extra build options
    917 AC_ARG_WITH(extra-options,
    918   AS_HELP_STRING([--with-extra-options],
    919                  [Specify additional options to compile LLVM with]),,
    920                  withval=default)
    921 case "$withval" in
    922   default) EXTRA_OPTIONS= ;;
    923   *) EXTRA_OPTIONS=$withval ;;
    924 esac
    925 AC_SUBST(EXTRA_OPTIONS,$EXTRA_OPTIONS)
    926 
    927 dnl Specify extra linker build options
    928 AC_ARG_WITH(extra-ld-options,
    929   AS_HELP_STRING([--with-extra-ld-options],
    930                  [Specify additional options to link LLVM with]),,
    931                  withval=default)
    932 case "$withval" in
    933   default) EXTRA_LD_OPTIONS= ;;
    934   *) EXTRA_LD_OPTIONS=$withval ;;
    935 esac
    936 AC_SUBST(EXTRA_LD_OPTIONS,$EXTRA_LD_OPTIONS)
    937 
    938 dnl Allow specific bindings to be specified for building (or not)
    939 AC_ARG_ENABLE([bindings],AS_HELP_STRING([--enable-bindings],
    940     [Build specific language bindings: all,auto,none,{binding-name} (default=auto)]),,
    941     enableval=default)
    942 BINDINGS_TO_BUILD=""
    943 case "$enableval" in
    944   yes | default | auto) BINDINGS_TO_BUILD="auto" ;;
    945   all ) BINDINGS_TO_BUILD="ocaml" ;;
    946   none | no) BINDINGS_TO_BUILD="" ;;
    947   *)for a_binding in `echo $enableval|sed -e 's/,/ /g' ` ; do
    948       case "$a_binding" in
    949         ocaml) BINDINGS_TO_BUILD="ocaml $BINDINGS_TO_BUILD" ;;
    950         *) AC_MSG_ERROR([Unrecognized binding $a_binding]) ;;
    951       esac
    952   done
    953   ;;
    954 esac
    955 
    956 dnl Allow the ocaml libdir to be overridden. This could go in a configure
    957 dnl script for bindings/ocaml/configure, except that its auto value depends on
    958 dnl OCAMLC, which is found here to support tests.
    959 AC_ARG_WITH([ocaml-libdir],
    960   [AS_HELP_STRING([--with-ocaml-libdir],
    961     [Specify install location for ocaml bindings (default is stdlib)])],
    962   [],
    963   [withval=auto])
    964 case "$withval" in
    965   auto) with_ocaml_libdir="$withval" ;;
    966   /* | [[A-Za-z]]:[[\\/]]*) with_ocaml_libdir="$withval" ;;
    967   *) AC_MSG_ERROR([Invalid path for --with-ocaml-libdir. Provide full path]) ;;
    968 esac
    969 
    970 AC_ARG_WITH(clang-srcdir,
    971   AS_HELP_STRING([--with-clang-srcdir],
    972     [Directory to the out-of-tree Clang source]),,
    973     withval="-")
    974 case "$withval" in
    975   -) clang_src_root="" ;;
    976   /* | [[A-Za-z]]:[[\\/]]*) clang_src_root="$withval" ;;
    977   *) clang_src_root="$ac_pwd/$withval" ;;
    978 esac
    979 AC_SUBST(CLANG_SRC_ROOT,[$clang_src_root])
    980 
    981 AC_ARG_WITH(clang-resource-dir,
    982   AS_HELP_STRING([--with-clang-resource-dir],
    983     [Relative directory from the Clang binary for resource files]),,
    984     withval="")
    985 AC_DEFINE_UNQUOTED(CLANG_RESOURCE_DIR,"$withval",
    986                    [Relative directory for resource files])
    987 
    988 AC_ARG_WITH(c-include-dirs,
    989   AS_HELP_STRING([--with-c-include-dirs],
    990     [Colon separated list of directories clang will search for headers]),,
    991     withval="")
    992 AC_DEFINE_UNQUOTED(C_INCLUDE_DIRS,"$withval",
    993                    [Directories clang will search for headers])
    994 
    995 # Clang normally uses the system c++ headers and libraries. With this option,
    996 # clang will use the ones provided by a gcc installation instead. This option should
    997 # be passed the same value that was used with --prefix when configuring gcc.
    998 AC_ARG_WITH(gcc-toolchain,
    999   AS_HELP_STRING([--with-gcc-toolchain],
   1000     [Directory where gcc is installed.]),,
   1001     withval="")
   1002 AC_DEFINE_UNQUOTED(GCC_INSTALL_PREFIX,"$withval",
   1003                    [Directory where gcc is installed.])
   1004 
   1005 AC_ARG_WITH(default-sysroot,
   1006   AS_HELP_STRING([--with-default-sysroot],
   1007     [Add --sysroot=<path> to all compiler invocations.]),,
   1008     withval="")
   1009 AC_DEFINE_UNQUOTED(DEFAULT_SYSROOT,"$withval",
   1010                    [Default <path> to all compiler invocations for --sysroot=<path>.])
   1011 
   1012 dnl Allow linking of LLVM with GPLv3 binutils code.
   1013 AC_ARG_WITH(binutils-include,
   1014   AS_HELP_STRING([--with-binutils-include],
   1015     [Specify path to binutils/include/ containing plugin-api.h file for gold plugin.]),,
   1016   withval=default)
   1017 case "$withval" in
   1018   default) WITH_BINUTILS_INCDIR=default ;;
   1019   /* | [[A-Za-z]]:[[\\/]]*)      WITH_BINUTILS_INCDIR=$withval ;;
   1020   *) AC_MSG_ERROR([Invalid path for --with-binutils-include. Provide full path]) ;;
   1021 esac
   1022 if test "x$WITH_BINUTILS_INCDIR" != xdefault ; then
   1023   AC_SUBST(BINUTILS_INCDIR,$WITH_BINUTILS_INCDIR)
   1024   if test ! -f "$WITH_BINUTILS_INCDIR/plugin-api.h"; then
   1025      echo "$WITH_BINUTILS_INCDIR/plugin-api.h"
   1026      AC_MSG_ERROR([Invalid path to directory containing plugin-api.h.]);
   1027   fi
   1028 fi
   1029 
   1030 dnl Specify the URL where bug reports should be submitted.
   1031 AC_ARG_WITH(bug-report-url,
   1032   AS_HELP_STRING([--with-bug-report-url],
   1033     [Specify the URL where bug reports should be submitted (default=http://llvm.org/bugs/)]),,
   1034     withval="http://llvm.org/bugs/")
   1035 AC_DEFINE_UNQUOTED(BUG_REPORT_URL,"$withval",
   1036                    [Bug report URL.])
   1037 
   1038 dnl --enable-libffi : check whether the user wants to turn off libffi:
   1039 AC_ARG_ENABLE(libffi,AS_HELP_STRING(
   1040   --enable-libffi,[Check for the presence of libffi (default is NO)]),
   1041   [case "$enableval" in
   1042     yes) llvm_cv_enable_libffi="yes" ;;
   1043     no)  llvm_cv_enable_libffi="no"  ;;
   1044     *) AC_MSG_ERROR([Invalid setting for --enable-libffi. Use "yes" or "no"]) ;;
   1045   esac],
   1046   llvm_cv_enable_libffi=no)
   1047 
   1048 AC_ARG_WITH(internal-prefix,
   1049   AS_HELP_STRING([--with-internal-prefix],
   1050     [Installation directory for internal files]),,
   1051     withval="")
   1052 AC_SUBST(INTERNAL_PREFIX,[$withval])
   1053 
   1054 dnl===-----------------------------------------------------------------------===
   1055 dnl===
   1056 dnl=== SECTION 4: Check for programs we need and that they are the right version
   1057 dnl===
   1058 dnl===-----------------------------------------------------------------------===
   1059 
   1060 AC_PROG_NM
   1061 AC_SUBST(NM)
   1062 
   1063 dnl Check for the tools that the makefiles require
   1064 AC_CHECK_GNU_MAKE
   1065 AC_PROG_LN_S
   1066 AC_PATH_PROG(CMP, [cmp], [cmp])
   1067 AC_PATH_PROG(CP, [cp], [cp])
   1068 AC_PATH_PROG(DATE, [date], [date])
   1069 AC_PATH_PROG(FIND, [find], [find])
   1070 AC_PATH_PROG(GREP, [grep], [grep])
   1071 AC_PATH_PROG(MKDIR,[mkdir],[mkdir])
   1072 AC_PATH_PROG(MV,   [mv],   [mv])
   1073 AC_PROG_RANLIB
   1074 AC_CHECK_TOOL(AR, ar, false)
   1075 AC_PATH_PROG(RM,   [rm],   [rm])
   1076 AC_PATH_PROG(SED,  [sed],  [sed])
   1077 AC_PATH_PROG(TAR,  [tar],  [gtar])
   1078 AC_PATH_PROG(BINPWD,[pwd],  [pwd])
   1079 
   1080 dnl Looking for misc. graph plotting software
   1081 AC_PATH_PROG(GRAPHVIZ, [Graphviz], [echo Graphviz])
   1082 if test "$GRAPHVIZ" != "echo Graphviz" ; then
   1083   AC_DEFINE([HAVE_GRAPHVIZ],[1],[Define if the Graphviz program is available])
   1084   dnl If we're targeting for mingw we should emit windows paths, not msys
   1085   if test "$llvm_cv_os_type" = "MingW" ; then
   1086     GRAPHVIZ=`echo $GRAPHVIZ | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1087   fi
   1088   AC_DEFINE_UNQUOTED([LLVM_PATH_GRAPHVIZ],"$GRAPHVIZ${EXEEXT}",
   1089    [Define to path to Graphviz program if found or 'echo Graphviz' otherwise])
   1090 fi
   1091 AC_PATH_PROG(DOT, [dot], [echo dot])
   1092 if test "$DOT" != "echo dot" ; then
   1093   AC_DEFINE([HAVE_DOT],[1],[Define if the dot program is available])
   1094   dnl If we're targeting for mingw we should emit windows paths, not msys
   1095   if test "$llvm_cv_os_type" = "MingW" ; then
   1096     DOT=`echo $DOT | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1097   fi
   1098   AC_DEFINE_UNQUOTED([LLVM_PATH_DOT],"$DOT${EXEEXT}",
   1099    [Define to path to dot program if found or 'echo dot' otherwise])
   1100 fi
   1101 AC_PATH_PROG(FDP, [fdp], [echo fdp])
   1102 if test "$FDP" != "echo fdp" ; then
   1103   AC_DEFINE([HAVE_FDP],[1],[Define if the neat program is available])
   1104   dnl If we're targeting for mingw we should emit windows paths, not msys
   1105   if test "$llvm_cv_os_type" = "MingW" ; then
   1106     FDP=`echo $FDP | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1107   fi
   1108   AC_DEFINE_UNQUOTED([LLVM_PATH_FDP],"$FDP${EXEEXT}",
   1109    [Define to path to fdp program if found or 'echo fdp' otherwise])
   1110 fi
   1111 AC_PATH_PROG(NEATO, [neato], [echo neato])
   1112 if test "$NEATO" != "echo neato" ; then
   1113   AC_DEFINE([HAVE_NEATO],[1],[Define if the neat program is available])
   1114   dnl If we're targeting for mingw we should emit windows paths, not msys
   1115   if test "$llvm_cv_os_type" = "MingW" ; then
   1116     NEATO=`echo $NEATO | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1117   fi
   1118   AC_DEFINE_UNQUOTED([LLVM_PATH_NEATO],"$NEATO${EXEEXT}",
   1119    [Define to path to neato program if found or 'echo neato' otherwise])
   1120 fi
   1121 AC_PATH_PROG(TWOPI, [twopi], [echo twopi])
   1122 if test "$TWOPI" != "echo twopi" ; then
   1123   AC_DEFINE([HAVE_TWOPI],[1],[Define if the neat program is available])
   1124   dnl If we're targeting for mingw we should emit windows paths, not msys
   1125   if test "$llvm_cv_os_type" = "MingW" ; then
   1126     TWOPI=`echo $TWOPI | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1127   fi
   1128   AC_DEFINE_UNQUOTED([LLVM_PATH_TWOPI],"$TWOPI${EXEEXT}",
   1129    [Define to path to twopi program if found or 'echo twopi' otherwise])
   1130 fi
   1131 AC_PATH_PROG(CIRCO, [circo], [echo circo])
   1132 if test "$CIRCO" != "echo circo" ; then
   1133   AC_DEFINE([HAVE_CIRCO],[1],[Define if the neat program is available])
   1134   dnl If we're targeting for mingw we should emit windows paths, not msys
   1135   if test "$llvm_cv_os_type" = "MingW" ; then
   1136     CIRCO=`echo $CIRCO | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1137   fi
   1138   AC_DEFINE_UNQUOTED([LLVM_PATH_CIRCO],"$CIRCO${EXEEXT}",
   1139    [Define to path to circo program if found or 'echo circo' otherwise])
   1140 fi
   1141 AC_PATH_PROGS(GV, [gv gsview32], [echo gv])
   1142 if test "$GV" != "echo gv" ; then
   1143   AC_DEFINE([HAVE_GV],[1],[Define if the gv program is available])
   1144   dnl If we're targeting for mingw we should emit windows paths, not msys
   1145   if test "$llvm_cv_os_type" = "MingW" ; then
   1146     GV=`echo $GV | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1147   fi
   1148   AC_DEFINE_UNQUOTED([LLVM_PATH_GV],"$GV${EXEEXT}",
   1149    [Define to path to gv program if found or 'echo gv' otherwise])
   1150 fi
   1151 AC_PATH_PROG(DOTTY, [dotty], [echo dotty])
   1152 if test "$DOTTY" != "echo dotty" ; then
   1153   AC_DEFINE([HAVE_DOTTY],[1],[Define if the dotty program is available])
   1154   dnl If we're targeting for mingw we should emit windows paths, not msys
   1155   if test "$llvm_cv_os_type" = "MingW" ; then
   1156     DOTTY=`echo $DOTTY | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1157   fi
   1158   AC_DEFINE_UNQUOTED([LLVM_PATH_DOTTY],"$DOTTY${EXEEXT}",
   1159    [Define to path to dotty program if found or 'echo dotty' otherwise])
   1160 fi
   1161 AC_PATH_PROG(XDOT_PY, [xdot.py], [echo xdot.py])
   1162 if test "$XDOT_PY" != "echo xdot.py" ; then
   1163   AC_DEFINE([HAVE_XDOT_PY],[1],[Define if the xdot.py program is available])
   1164   dnl If we're targeting for mingw we should emit windows paths, not msys
   1165   if test "$llvm_cv_os_type" = "MingW" ; then
   1166     XDOT_PY=`echo $XDOT_PY | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
   1167   fi
   1168   AC_DEFINE_UNQUOTED([LLVM_PATH_XDOT_PY],"$XDOT_PY${EXEEXT}",
   1169    [Define to path to xdot.py program if found or 'echo xdot.py' otherwise])
   1170 fi
   1171 
   1172 dnl Find the install program
   1173 AC_PROG_INSTALL
   1174 dnl Prepend src dir to install path dir if it's a relative path
   1175 dnl This is a hack for installs that take place in something other
   1176 dnl than the top level.
   1177 case "$INSTALL" in
   1178  [[\\/$]]* | ?:[[\\/]]* ) ;;
   1179  *)  INSTALL="\\\$(TOPSRCDIR)/$INSTALL" ;;
   1180 esac
   1181 
   1182 dnl Checks for documentation and testing tools that we can do without. If these
   1183 dnl are not found then they are set to "true" which always succeeds but does
   1184 dnl nothing. This just lets the build output show that we could have done
   1185 dnl something if the tool was available.
   1186 AC_PATH_PROG(BZIP2, [bzip2])
   1187 AC_PATH_PROG(CAT, [cat])
   1188 AC_PATH_PROG(DOXYGEN, [doxygen])
   1189 AC_PATH_PROG(GROFF, [groff])
   1190 AC_PATH_PROG(GZIPBIN, [gzip])
   1191 AC_PATH_PROG(PDFROFF, [pdfroff])
   1192 AC_PATH_PROG(ZIP, [zip])
   1193 AC_PATH_PROGS(OCAMLC, [ocamlc])
   1194 AC_PATH_PROGS(OCAMLOPT, [ocamlopt])
   1195 AC_PATH_PROGS(OCAMLDEP, [ocamldep])
   1196 AC_PATH_PROGS(OCAMLDOC, [ocamldoc])
   1197 AC_PATH_PROGS(GAS, [gas as])
   1198 
   1199 dnl Get the version of the linker in use.
   1200 AC_LINK_GET_VERSION
   1201 
   1202 dnl Determine whether the linker supports the -R option.
   1203 AC_LINK_USE_R
   1204 
   1205 dnl Determine whether the linker supports the -export-dynamic option.
   1206 AC_LINK_EXPORT_DYNAMIC
   1207 
   1208 dnl Determine whether the linker supports the --version-script option.
   1209 AC_LINK_VERSION_SCRIPT
   1210 
   1211 dnl Check for libtool and the library that has dlopen function (which must come
   1212 dnl before the AC_PROG_LIBTOOL check in order to enable dlopening libraries with
   1213 dnl libtool).
   1214 AC_LIBTOOL_DLOPEN
   1215 AC_LIB_LTDL
   1216 
   1217 AC_MSG_CHECKING([tool compatibility])
   1218 
   1219 dnl Ensure that compilation tools are GCC or a GNU compatible compiler such as
   1220 dnl ICC; we use GCC specific options in the makefiles so the compiler needs
   1221 dnl to support those options.
   1222 dnl "icc" emits gcc signatures
   1223 dnl "icc -no-gcc" emits no gcc signature BUT is still compatible
   1224 ICC=no
   1225 IXX=no
   1226 case $CC in
   1227   icc*|icpc*)
   1228     ICC=yes
   1229     IXX=yes
   1230     ;;
   1231    *)
   1232     ;;
   1233 esac
   1234 
   1235 if test "$GCC" != "yes" && test "$ICC" != "yes"
   1236 then
   1237   AC_MSG_ERROR([gcc|icc required but not found])
   1238 fi
   1239 
   1240 dnl Ensure that compilation tools are compatible with GCC extensions
   1241 if test "$GXX" != "yes" && test "$IXX" != "yes"
   1242 then
   1243   AC_MSG_ERROR([g++|clang++|icc required but not found])
   1244 fi
   1245 
   1246 dnl Verify that GCC is version 3.0 or higher
   1247 if test "$GCC" = "yes"
   1248 then
   1249   AC_COMPILE_IFELSE(
   1250 [
   1251   AC_LANG_SOURCE([[
   1252     #if !defined(__GNUC__) || __GNUC__ < 3
   1253     #error Unsupported GCC version
   1254     #endif
   1255   ]])
   1256 ],
   1257 [], [AC_MSG_ERROR([gcc 3.x required, but you have a lower version])])
   1258 fi
   1259 
   1260 dnl Check for GNU Make.  We use its extensions, so don't build without it
   1261 if test -z "$llvm_cv_gnu_make_command"
   1262 then
   1263   AC_MSG_ERROR([GNU Make required but not found])
   1264 fi
   1265 
   1266 dnl Tool compatibility is okay if we make it here.
   1267 AC_MSG_RESULT([ok])
   1268 
   1269 dnl Check optional compiler flags.
   1270 AC_MSG_CHECKING([optional compiler flags])
   1271 CXX_FLAG_CHECK(NO_VARIADIC_MACROS, [-Wno-variadic-macros])
   1272 CXX_FLAG_CHECK(NO_MISSING_FIELD_INITIALIZERS, [-Wno-missing-field-initializers])
   1273 CXX_FLAG_CHECK(COVERED_SWITCH_DEFAULT, [-Wcovered-switch-default])
   1274 
   1275 dnl GCC's potential uninitialized use analysis is weak and presents lots of
   1276 dnl false positives, so disable it.
   1277 NO_UNINITIALIZED=
   1278 NO_MAYBE_UNINITIALIZED=
   1279 if test "$GXX" = "yes"
   1280 then
   1281   CXX_FLAG_CHECK(NO_MAYBE_UNINITIALIZED, [-Wno-maybe-uninitialized])
   1282   dnl gcc 4.7 introduced -Wmaybe-uninitialized to distinguish cases which are
   1283   dnl known to be uninitialized from cases which might be uninitialized.  We
   1284   dnl still want to catch the first kind of errors.
   1285   if test -z "$NO_MAYBE_UNINITIALIZED"
   1286   then
   1287     CXX_FLAG_CHECK(NO_UNINITIALIZED, [-Wno-uninitialized])
   1288   fi
   1289 fi
   1290 AC_MSG_RESULT([$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS $COVERED_SWITCH_DEFAULT $NO_UNINITIALIZED $NO_MAYBE_UNINITIALIZED])
   1291 
   1292 AC_ARG_WITH([python],
   1293             [AS_HELP_STRING([--with-python], [path to python])],
   1294             [PYTHON="$withval"])
   1295 
   1296 if test -n "$PYTHON" && test -x "$PYTHON" ; then
   1297   AC_MSG_CHECKING([for python])
   1298   AC_MSG_RESULT([user defined: $with_python])
   1299 else
   1300   if test -n "$PYTHON" ; then
   1301     AC_MSG_WARN([specified python ($PYTHON) is not usable, searching path])
   1302   fi
   1303 
   1304   AC_PATH_PROG([PYTHON], [python python2 python26],
   1305                [AC_MSG_RESULT([not found])
   1306                 AC_MSG_ERROR([could not find python 2.5 or higher])])
   1307 fi
   1308 
   1309 AC_MSG_CHECKING([for python >= 2.5])
   1310 ac_python_version=`$PYTHON -c 'import sys; print sys.version.split()[[0]]'`
   1311 ac_python_version_major=`echo $ac_python_version | cut -d'.' -f1`
   1312 ac_python_version_minor=`echo $ac_python_version | cut -d'.' -f2`
   1313 ac_python_version_patch=`echo $ac_python_version | cut -d'.' -f3`
   1314 if   test "$ac_python_version_major" -eq "2" \
   1315    && test "$ac_python_version_minor" -ge "5" ; then
   1316   AC_MSG_RESULT([$PYTHON ($ac_python_version)])
   1317 else
   1318   AC_MSG_RESULT([not found])
   1319   AC_MSG_FAILURE([found python $ac_python_version ($PYTHON); required >= 2.5])
   1320 fi
   1321 
   1322 dnl===-----------------------------------------------------------------------===
   1323 dnl===
   1324 dnl=== SECTION 5: Check for libraries
   1325 dnl===
   1326 dnl===-----------------------------------------------------------------------===
   1327 
   1328 AC_CHECK_LIB(m,sin)
   1329 if test "$llvm_cv_os_type" = "MingW" ; then
   1330   AC_CHECK_LIB(imagehlp, main)
   1331   AC_CHECK_LIB(psapi, main)
   1332 fi
   1333 
   1334 dnl dlopen() is required for plugin support.
   1335 AC_SEARCH_LIBS(dlopen,dl,AC_DEFINE([HAVE_DLOPEN],[1],
   1336                [Define if dlopen() is available on this platform.]),
   1337                AC_MSG_WARN([dlopen() not found - disabling plugin support]))
   1338 
   1339 dnl Search for the clock_gettime() function. Note that we rely on the POSIX
   1340 dnl macros to detect whether clock_gettime is available, this just finds the
   1341 dnl right libraries to link with.
   1342 AC_SEARCH_LIBS(clock_gettime,rt)
   1343 
   1344 dnl libffi is optional; used to call external functions from the interpreter
   1345 if test "$llvm_cv_enable_libffi" = "yes" ; then
   1346   AC_SEARCH_LIBS(ffi_call,ffi,AC_DEFINE([HAVE_FFI_CALL],[1],
   1347                  [Define if libffi is available on this platform.]),
   1348                  AC_MSG_ERROR([libffi not found - configure without --enable-libffi to compile without it]))
   1349 fi
   1350 
   1351 dnl mallinfo is optional; the code can compile (minus features) without it
   1352 AC_SEARCH_LIBS(mallinfo,malloc,AC_DEFINE([HAVE_MALLINFO],[1],
   1353                [Define if mallinfo() is available on this platform.]))
   1354 
   1355 dnl pthread locking functions are optional - but llvm will not be thread-safe
   1356 dnl without locks.
   1357 if test "$LLVM_ENABLE_THREADS" -eq 1 && test "$ENABLE_PTHREADS" -eq 1 ; then
   1358   AC_CHECK_LIB(pthread, pthread_mutex_init)
   1359   AC_SEARCH_LIBS(pthread_mutex_lock,pthread,
   1360                  AC_DEFINE([HAVE_PTHREAD_MUTEX_LOCK],[1],
   1361                            [Have pthread_mutex_lock]))
   1362   AC_SEARCH_LIBS(pthread_rwlock_init,pthread,
   1363                  AC_DEFINE([HAVE_PTHREAD_RWLOCK_INIT],[1],
   1364                  [Have pthread_rwlock_init]))
   1365   AC_SEARCH_LIBS(pthread_getspecific,pthread,
   1366                  AC_DEFINE([HAVE_PTHREAD_GETSPECIFIC],[1],
   1367                  [Have pthread_getspecific]))
   1368 fi
   1369 
   1370 dnl Allow extra x86-disassembler library
   1371 AC_ARG_WITH(udis86,
   1372   AS_HELP_STRING([--with-udis86=<path>],
   1373     [Use udis86 external x86 disassembler library]),
   1374     [
   1375       AC_SUBST(USE_UDIS86, [1])
   1376       case "$withval" in
   1377         /usr/lib|yes) ;;
   1378         *) LDFLAGS="$LDFLAGS -L${withval}" ;;
   1379       esac
   1380       AC_CHECK_LIB(udis86, ud_init, [], [
   1381         echo "Error! You need to have libudis86 around."
   1382         exit -1
   1383       ])
   1384     ],
   1385     AC_SUBST(USE_UDIS86, [0]))
   1386 AC_DEFINE_UNQUOTED([USE_UDIS86],$USE_UDIS86,
   1387                    [Define if use udis86 library])
   1388 
   1389 dnl Allow OProfile support for JIT output.
   1390 AC_ARG_WITH(oprofile,
   1391   AS_HELP_STRING([--with-oprofile=<prefix>],
   1392     [Tell OProfile >= 0.9.4 how to symbolize JIT output]),
   1393     [
   1394       AC_SUBST(USE_OPROFILE, [1])
   1395       case "$withval" in
   1396         /usr|yes) llvm_cv_oppath=/usr/lib/oprofile ;;
   1397         no) llvm_cv_oppath=
   1398             AC_SUBST(USE_OPROFILE, [0]) ;;
   1399         *) llvm_cv_oppath="${withval}/lib/oprofile"
   1400            CPPFLAGS="-I${withval}/include";;
   1401       esac
   1402       case $llvm_cv_os_type in
   1403         Linux)
   1404           if test -n "$llvm_cv_oppath" ; then
   1405             LIBS="$LIBS -lopagent -L${llvm_cv_oppath} -Wl,-rpath,${llvm_cv_oppath}"
   1406             dnl Work around http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=537744:
   1407             dnl libbfd is not included properly in libopagent in some Debian
   1408             dnl versions.  If libbfd isn't found at all, we assume opagent works
   1409             dnl anyway.
   1410             AC_SEARCH_LIBS(bfd_init, bfd, [], [])
   1411             AC_SEARCH_LIBS(op_open_agent, opagent, [], [
   1412               echo "Error! You need to have libopagent around."
   1413               exit -1
   1414             ])
   1415             AC_CHECK_HEADER([opagent.h], [], [
   1416               echo "Error! You need to have opagent.h around."
   1417               exit -1
   1418               ])
   1419           fi ;;
   1420         *)
   1421           AC_MSG_ERROR([OProfile support is available on Linux only.]) ;;
   1422       esac 
   1423     ],
   1424     [
   1425       AC_SUBST(USE_OPROFILE, [0])
   1426     ])
   1427 AC_DEFINE_UNQUOTED([LLVM_USE_OPROFILE],$USE_OPROFILE,
   1428                    [Define if we have the oprofile JIT-support library])
   1429 
   1430 dnl Enable support for Intel JIT Events API.
   1431 AC_ARG_WITH(intel-jitevents,
   1432   AS_HELP_STRING([--with-intel-jitevents  Notify Intel JIT profiling API of generated code]),
   1433     [
   1434        case "$withval" in
   1435           yes) AC_SUBST(USE_INTEL_JITEVENTS,[1]);;
   1436           no)  AC_SUBST(USE_INTEL_JITEVENTS,[0]);;
   1437           *) AC_MSG_ERROR([Invalid setting for --with-intel-jitevents. Use "yes" or "no"]);;
   1438        esac
   1439 
   1440       case $llvm_cv_os_type in
   1441         Linux|Win32|Cygwin|MingW) ;;
   1442         *) AC_MSG_ERROR([Intel JIT API support is available on Linux and Windows only.]);;
   1443       esac
   1444 
   1445       case "$llvm_cv_target_arch" in
   1446         x86|x86_64) ;;
   1447         *) AC_MSG_ERROR([Target architecture $llvm_cv_target_arch does not support Intel JIT Events API.]);;
   1448       esac
   1449     ],
   1450     [
   1451       AC_SUBST(USE_INTEL_JITEVENTS, [0])
   1452     ])
   1453 AC_DEFINE_UNQUOTED([LLVM_USE_INTEL_JITEVENTS],$USE_INTEL_JITEVENTS,
   1454                    [Define if we have the Intel JIT API runtime support library])
   1455 
   1456 dnl Check for libxml2
   1457 dnl Right now we're just checking for the existence, we could also check for a
   1458 dnl particular version via --version on xml2-config
   1459 AC_CHECK_PROGS(XML2CONFIG, xml2-config)
   1460 
   1461 AC_MSG_CHECKING(for libxml2 includes)
   1462 if test "x$XML2CONFIG" = "x"; then
   1463  AC_MSG_RESULT(xml2-config not found)
   1464 else
   1465  LIBXML2_INC=`$XML2CONFIG --cflags`
   1466  AC_MSG_RESULT($LIBXML2_INC)
   1467  AC_CHECK_LIB(xml2, xmlReadFile,[AC_DEFINE([CLANG_HAVE_LIBXML],1,[Define if we have libxml2])
   1468                                 LIBXML2_LIBS="-lxml2"])
   1469 fi
   1470 AC_SUBST(LIBXML2_LIBS)
   1471 AC_SUBST(LIBXML2_INC)
   1472 
   1473 dnl===-----------------------------------------------------------------------===
   1474 dnl===
   1475 dnl=== SECTION 6: Check for header files
   1476 dnl===
   1477 dnl===-----------------------------------------------------------------------===
   1478 
   1479 dnl First, use autoconf provided macros for specific headers that we need
   1480 dnl We don't check for ancient stuff or things that are guaranteed to be there
   1481 dnl by the C++ standard. We always use the <cfoo> versions of <foo.h> C headers.
   1482 dnl Generally we're looking for POSIX headers.
   1483 AC_HEADER_DIRENT
   1484 AC_HEADER_MMAP_ANONYMOUS
   1485 AC_HEADER_STAT
   1486 AC_HEADER_SYS_WAIT
   1487 AC_HEADER_TIME
   1488 
   1489 AC_CHECK_HEADERS([dlfcn.h execinfo.h fcntl.h inttypes.h limits.h link.h])
   1490 AC_CHECK_HEADERS([malloc.h setjmp.h signal.h stdint.h termios.h unistd.h])
   1491 AC_CHECK_HEADERS([utime.h windows.h])
   1492 AC_CHECK_HEADERS([sys/mman.h sys/param.h sys/resource.h sys/time.h sys/uio.h])
   1493 AC_CHECK_HEADERS([sys/types.h sys/ioctl.h malloc/malloc.h mach/mach.h])
   1494 AC_CHECK_HEADERS([valgrind/valgrind.h])
   1495 AC_CHECK_HEADERS([fenv.h])
   1496 if test "$LLVM_ENABLE_THREADS" -eq 1 && test "$ENABLE_PTHREADS" -eq 1 ; then
   1497   AC_CHECK_HEADERS(pthread.h,
   1498                    AC_SUBST(HAVE_PTHREAD, 1),
   1499                    AC_SUBST(HAVE_PTHREAD, 0))
   1500 else
   1501   AC_SUBST(HAVE_PTHREAD, 0)
   1502 fi
   1503 
   1504 dnl Try to find ffi.h.
   1505 if test "$llvm_cv_enable_libffi" = "yes" ; then
   1506   AC_CHECK_HEADERS([ffi.h ffi/ffi.h])
   1507 fi
   1508 
   1509 dnl Try to find Darwin specific crash reporting libraries.
   1510 AC_CHECK_HEADERS([CrashReporterClient.h])
   1511 
   1512 dnl Try to find Darwin specific crash reporting global.
   1513 AC_MSG_CHECKING([__crashreporter_info__])
   1514 AC_LINK_IFELSE(
   1515 [
   1516   AC_LANG_SOURCE([[
   1517     extern const char *__crashreporter_info__;
   1518     int main() {
   1519       __crashreporter_info__ = "test";
   1520       return 0;
   1521     }
   1522   ]])
   1523 ],
   1524 [
   1525   AC_MSG_RESULT([yes])
   1526   AC_DEFINE([HAVE_CRASHREPORTER_INFO], [1], [can use __crashreporter_info__])
   1527 ],
   1528 [
   1529   AC_MSG_RESULT([no])
   1530   AC_DEFINE([HAVE_CRASHREPORTER_INFO], [0], [can use __crashreporter_info__])
   1531 ])
   1532 
   1533 dnl===-----------------------------------------------------------------------===
   1534 dnl===
   1535 dnl=== SECTION 7: Check for types and structures
   1536 dnl===
   1537 dnl===-----------------------------------------------------------------------===
   1538 
   1539 AC_HUGE_VAL_CHECK
   1540 AC_TYPE_PID_T
   1541 AC_TYPE_SIZE_T
   1542 AC_DEFINE_UNQUOTED([RETSIGTYPE],[void],[Define as the return type of signal handlers (`int' or `void').])
   1543 AC_STRUCT_TM
   1544 AC_CHECK_TYPES([int64_t],,AC_MSG_ERROR([Type int64_t required but not found]))
   1545 AC_CHECK_TYPES([uint64_t],,
   1546          AC_CHECK_TYPES([u_int64_t],,
   1547          AC_MSG_ERROR([Type uint64_t or u_int64_t required but not found])))
   1548 
   1549 dnl===-----------------------------------------------------------------------===
   1550 dnl===
   1551 dnl=== SECTION 8: Check for specific functions needed
   1552 dnl===
   1553 dnl===-----------------------------------------------------------------------===
   1554 
   1555 AC_CHECK_FUNCS([backtrace ceilf floorf roundf rintf nearbyintf getcwd ])
   1556 AC_CHECK_FUNCS([powf fmodf strtof round ])
   1557 AC_CHECK_FUNCS([log log2 log10 exp exp2])
   1558 AC_CHECK_FUNCS([getpagesize getrusage getrlimit setrlimit gettimeofday ])
   1559 AC_CHECK_FUNCS([isatty mkdtemp mkstemp ])
   1560 AC_CHECK_FUNCS([mktemp posix_spawn pread realpath sbrk setrlimit strdup ])
   1561 AC_CHECK_FUNCS([strerror strerror_r setenv arc4random ])
   1562 AC_CHECK_FUNCS([strtoll strtoq sysconf malloc_zone_statistics ])
   1563 AC_CHECK_FUNCS([setjmp longjmp sigsetjmp siglongjmp writev])
   1564 AC_C_PRINTF_A
   1565 AC_FUNC_RAND48
   1566 
   1567 dnl Check the declaration "Secure API" on Windows environments.
   1568 AC_CHECK_DECLS([strerror_s])
   1569 
   1570 dnl Check symbols in libgcc.a for JIT on Mingw.
   1571 if test "$llvm_cv_os_type" = "MingW" ; then
   1572   AC_CHECK_LIB(gcc,_alloca,AC_DEFINE([HAVE__ALLOCA],[1],[Have host's _alloca]))
   1573   AC_CHECK_LIB(gcc,__alloca,AC_DEFINE([HAVE___ALLOCA],[1],[Have host's __alloca]))
   1574   AC_CHECK_LIB(gcc,__chkstk,AC_DEFINE([HAVE___CHKSTK],[1],[Have host's __chkstk]))
   1575   AC_CHECK_LIB(gcc,___chkstk,AC_DEFINE([HAVE____CHKSTK],[1],[Have host's ___chkstk]))
   1576 
   1577   AC_CHECK_LIB(gcc,__ashldi3,AC_DEFINE([HAVE___ASHLDI3],[1],[Have host's __ashldi3]))
   1578   AC_CHECK_LIB(gcc,__ashrdi3,AC_DEFINE([HAVE___ASHRDI3],[1],[Have host's __ashrdi3]))
   1579   AC_CHECK_LIB(gcc,__divdi3,AC_DEFINE([HAVE___DIVDI3],[1],[Have host's __divdi3]))
   1580   AC_CHECK_LIB(gcc,__fixdfdi,AC_DEFINE([HAVE___FIXDFDI],[1],[Have host's __fixdfdi]))
   1581   AC_CHECK_LIB(gcc,__fixsfdi,AC_DEFINE([HAVE___FIXSFDI],[1],[Have host's __fixsfdi]))
   1582   AC_CHECK_LIB(gcc,__floatdidf,AC_DEFINE([HAVE___FLOATDIDF],[1],[Have host's __floatdidf]))
   1583   AC_CHECK_LIB(gcc,__lshrdi3,AC_DEFINE([HAVE___LSHRDI3],[1],[Have host's __lshrdi3]))
   1584   AC_CHECK_LIB(gcc,__moddi3,AC_DEFINE([HAVE___MODDI3],[1],[Have host's __moddi3]))
   1585   AC_CHECK_LIB(gcc,__udivdi3,AC_DEFINE([HAVE___UDIVDI3],[1],[Have host's __udivdi3]))
   1586   AC_CHECK_LIB(gcc,__umoddi3,AC_DEFINE([HAVE___UMODDI3],[1],[Have host's __umoddi3]))
   1587 
   1588   AC_CHECK_LIB(gcc,__main,AC_DEFINE([HAVE___MAIN],[1],[Have host's __main]))
   1589   AC_CHECK_LIB(gcc,__cmpdi2,AC_DEFINE([HAVE___CMPDI2],[1],[Have host's __cmpdi2]))
   1590 fi
   1591 
   1592 dnl Check Win32 API EnumerateLoadedModules.
   1593 if test "$llvm_cv_os_type" = "MingW" ; then
   1594   AC_MSG_CHECKING([whether EnumerateLoadedModules() accepts new decl])
   1595   AC_COMPILE_IFELSE(
   1596 [
   1597   AC_LANG_SOURCE([[
   1598     #include <windows.h>
   1599     #include <imagehlp.h>
   1600     extern void foo(PENUMLOADED_MODULES_CALLBACK);
   1601     extern void foo(BOOL(CALLBACK*)(PCSTR,ULONG_PTR,ULONG,PVOID));
   1602   ]])
   1603 ],
   1604 [
   1605   AC_MSG_RESULT([yes])
   1606   llvm_cv_win32_elmcb_pcstr="PCSTR"
   1607 ],
   1608 [
   1609   AC_MSG_RESULT([no])
   1610   llvm_cv_win32_elmcb_pcstr="PSTR"
   1611 ])
   1612   AC_DEFINE_UNQUOTED([WIN32_ELMCB_PCSTR],$llvm_cv_win32_elmcb_pcstr,[Type of 1st arg on ELM Callback])
   1613 fi
   1614 
   1615 dnl Check for variations in the Standard C++ library and STL. These macros are
   1616 dnl provided by LLVM in the autoconf/m4 directory.
   1617 AC_FUNC_ISNAN
   1618 AC_FUNC_ISINF
   1619 
   1620 dnl Check for mmap support.We also need to know if /dev/zero is required to
   1621 dnl be opened for allocating RWX memory.
   1622 dnl Make sure we aren't attempting to configure for an unknown system
   1623 if test "$llvm_cv_platform_type" = "Unix" ; then
   1624   AC_FUNC_MMAP
   1625   AC_FUNC_MMAP_FILE
   1626   AC_NEED_DEV_ZERO_FOR_MMAP
   1627 
   1628   if test "$ac_cv_func_mmap_fixed_mapped" = "no"
   1629   then
   1630     AC_MSG_WARN([mmap() of a fixed address required but not supported])
   1631   fi
   1632   if test "$ac_cv_func_mmap_file" = "no"
   1633   then
   1634     AC_MSG_WARN([mmap() of files required but not found])
   1635   fi
   1636 fi
   1637 
   1638 dnl atomic builtins are required for threading support.
   1639 AC_MSG_CHECKING(for GCC atomic builtins)
   1640 dnl Since we'll be using these atomic builtins in C++ files we should test
   1641 dnl the C++ compiler.
   1642 AC_LANG_PUSH([C++])
   1643 AC_LINK_IFELSE(
   1644 [
   1645   AC_LANG_SOURCE([[
   1646     int main() {
   1647       volatile unsigned long val = 1;
   1648       __sync_synchronize();
   1649       __sync_val_compare_and_swap(&val, 1, 0);
   1650       __sync_add_and_fetch(&val, 1);
   1651       __sync_sub_and_fetch(&val, 1);
   1652       return 0;
   1653     }
   1654   ]])
   1655 ],
   1656 [
   1657   AC_MSG_RESULT([yes])
   1658   AC_DEFINE([LLVM_HAS_ATOMICS], [1], [Has gcc/MSVC atomic intrinsics])
   1659 ],
   1660 [
   1661   AC_MSG_RESULT([no])
   1662   AC_DEFINE([LLVM_HAS_ATOMICS], [0], [Has gcc/MSVC atomic intrinsics])
   1663   AC_MSG_WARN([LLVM will be built thread-unsafe because atomic builtins are missing])
   1664 ])
   1665 AC_LANG_POP([C++])
   1666 
   1667 dnl===-----------------------------------------------------------------------===
   1668 dnl===
   1669 dnl=== SECTION 9: Additional checks, variables, etc.
   1670 dnl===
   1671 dnl===-----------------------------------------------------------------------===
   1672 
   1673 dnl Handle 32-bit linux systems running a 64-bit kernel.
   1674 dnl This has to come after section 4 because it invokes the compiler.
   1675 if test "$llvm_cv_os_type" = "Linux" -a "$llvm_cv_target_arch" = "x86_64" ; then
   1676   AC_IS_LINUX_MIXED
   1677   if test "$llvm_cv_linux_mixed" = "yes"; then
   1678     llvm_cv_target_arch="x86"
   1679     ARCH="x86"
   1680   fi
   1681 fi
   1682 
   1683 dnl Check whether __dso_handle is present
   1684 AC_CHECK_FUNCS([__dso_handle])
   1685 
   1686 dnl Propagate the shared library extension that the libltdl checks did to
   1687 dnl the Makefiles so we can use it there too
   1688 AC_SUBST(SHLIBEXT,$libltdl_cv_shlibext)
   1689 
   1690 dnl Propagate the run-time library path variable that the libltdl
   1691 dnl checks found to the Makefiles so we can use it there too
   1692 AC_SUBST(SHLIBPATH_VAR,$libltdl_cv_shlibpath_var)
   1693 
   1694 dnl Translate the various configuration directories and other basic
   1695 dnl information into substitutions that will end up in Makefile.config.in
   1696 dnl that these configured values can be used by the makefiles
   1697 if test "${prefix}" = "NONE" ; then
   1698   prefix="/usr/local"
   1699 fi
   1700 eval LLVM_PREFIX="${prefix}";
   1701 eval LLVM_BINDIR="${prefix}/bin";
   1702 eval LLVM_LIBDIR="${prefix}/lib";
   1703 eval LLVM_DATADIR="${prefix}/share/llvm";
   1704 eval LLVM_DOCSDIR="${prefix}/share/doc/llvm";
   1705 eval LLVM_ETCDIR="${prefix}/etc/llvm";
   1706 eval LLVM_INCLUDEDIR="${prefix}/include";
   1707 eval LLVM_INFODIR="${prefix}/info";
   1708 eval LLVM_MANDIR="${prefix}/man";
   1709 LLVM_CONFIGTIME=`date`
   1710 AC_SUBST(LLVM_PREFIX)
   1711 AC_SUBST(LLVM_BINDIR)
   1712 AC_SUBST(LLVM_LIBDIR)
   1713 AC_SUBST(LLVM_DATADIR)
   1714 AC_SUBST(LLVM_DOCSDIR)
   1715 AC_SUBST(LLVM_ETCDIR)
   1716 AC_SUBST(LLVM_INCLUDEDIR)
   1717 AC_SUBST(LLVM_INFODIR)
   1718 AC_SUBST(LLVM_MANDIR)
   1719 AC_SUBST(LLVM_CONFIGTIME)
   1720 
   1721 dnl Disable embedding timestamps in the build directory, with ENABLE_TIMESTAMPS.
   1722 if test "${ENABLE_TIMESTAMPS}" = "0"; then
   1723   LLVM_CONFIGTIME="(timestamp not enabled)"
   1724 fi
   1725 
   1726 dnl Place the various directories into the config.h file as #defines so that we
   1727 dnl can know about the installation paths within LLVM.
   1728 AC_DEFINE_UNQUOTED(LLVM_PREFIX,"$LLVM_PREFIX",
   1729                    [Installation prefix directory])
   1730 AC_DEFINE_UNQUOTED(LLVM_BINDIR, "$LLVM_BINDIR",
   1731                    [Installation directory for binary executables])
   1732 AC_DEFINE_UNQUOTED(LLVM_LIBDIR, "$LLVM_LIBDIR",
   1733                    [Installation directory for libraries])
   1734 AC_DEFINE_UNQUOTED(LLVM_DATADIR, "$LLVM_DATADIR",
   1735                    [Installation directory for data files])
   1736 AC_DEFINE_UNQUOTED(LLVM_DOCSDIR, "$LLVM_DOCSDIR",
   1737                    [Installation directory for documentation])
   1738 AC_DEFINE_UNQUOTED(LLVM_ETCDIR, "$LLVM_ETCDIR",
   1739                    [Installation directory for config files])
   1740 AC_DEFINE_UNQUOTED(LLVM_INCLUDEDIR, "$LLVM_INCLUDEDIR",
   1741                    [Installation directory for include files])
   1742 AC_DEFINE_UNQUOTED(LLVM_INFODIR, "$LLVM_INFODIR",
   1743                    [Installation directory for .info files])
   1744 AC_DEFINE_UNQUOTED(LLVM_MANDIR, "$LLVM_MANDIR",
   1745                    [Installation directory for man pages])
   1746 AC_DEFINE_UNQUOTED(LLVM_CONFIGTIME, "$LLVM_CONFIGTIME",
   1747                    [Time at which LLVM was configured])
   1748 AC_DEFINE_UNQUOTED(LLVM_HOSTTRIPLE, "$host",
   1749                    [Host triple LLVM will be executed on])
   1750 AC_DEFINE_UNQUOTED(LLVM_DEFAULT_TARGET_TRIPLE, "$target",
   1751                    [Target triple LLVM will generate code for by default])
   1752 
   1753 dnl Determine which bindings to build.
   1754 if test "$BINDINGS_TO_BUILD" = auto ; then
   1755   BINDINGS_TO_BUILD=""
   1756   if test "x$OCAMLC" != x -a "x$OCAMLDEP" != x ; then
   1757     BINDINGS_TO_BUILD="ocaml $BINDINGS_TO_BUILD"
   1758   fi
   1759 fi
   1760 AC_SUBST(BINDINGS_TO_BUILD,$BINDINGS_TO_BUILD)
   1761 
   1762 dnl This isn't really configurey, but it avoids having to repeat the list in
   1763 dnl other files.
   1764 AC_SUBST(ALL_BINDINGS,ocaml)
   1765 
   1766 dnl Do any work necessary to ensure that bindings have what they need.
   1767 binding_prereqs_failed=0
   1768 for a_binding in $BINDINGS_TO_BUILD ; do
   1769   case "$a_binding" in
   1770   ocaml)
   1771     if test "x$OCAMLC" = x ; then
   1772       AC_MSG_WARN([--enable-bindings=ocaml specified, but ocamlc not found. Try configure OCAMLC=/path/to/ocamlc])
   1773       binding_prereqs_failed=1
   1774     fi
   1775     if test "x$OCAMLDEP" = x ; then
   1776       AC_MSG_WARN([--enable-bindings=ocaml specified, but ocamldep not found. Try configure OCAMLDEP=/path/to/ocamldep])
   1777       binding_prereqs_failed=1
   1778     fi
   1779     if test "x$OCAMLOPT" = x ; then
   1780       AC_MSG_WARN([--enable-bindings=ocaml specified, but ocamlopt not found. Try configure OCAMLOPT=/path/to/ocamlopt])
   1781       dnl ocamlopt is optional!
   1782     fi
   1783     if test "x$with_ocaml_libdir" != xauto ; then
   1784       AC_SUBST(OCAML_LIBDIR,$with_ocaml_libdir)
   1785     else
   1786       ocaml_stdlib="`"$OCAMLC" -where`"
   1787       if test "$LLVM_PREFIX" '<' "$ocaml_stdlib" -a "$ocaml_stdlib" '<' "$LLVM_PREFIX~"
   1788       then
   1789         # ocaml stdlib is beneath our prefix; use stdlib
   1790         AC_SUBST(OCAML_LIBDIR,$ocaml_stdlib)
   1791       else
   1792         # ocaml stdlib is outside our prefix; use libdir/ocaml
   1793         AC_SUBST(OCAML_LIBDIR,$LLVM_LIBDIR/ocaml)
   1794       fi
   1795     fi
   1796     ;;
   1797   esac
   1798 done
   1799 if test "$binding_prereqs_failed" = 1 ; then
   1800   AC_MSG_ERROR([Prequisites for bindings not satisfied. Fix them or use configure --disable-bindings.])
   1801 fi
   1802 
   1803 dnl Determine whether the compiler supports -fvisibility-inlines-hidden.
   1804 AC_CXX_USE_VISIBILITY_INLINES_HIDDEN
   1805 
   1806 dnl Determine linker rpath flag
   1807 if test "$llvm_cv_link_use_r" = "yes" ; then
   1808   RPATH="-Wl,-R"
   1809 else
   1810   RPATH="-Wl,-rpath"
   1811 fi
   1812 AC_SUBST(RPATH)
   1813 
   1814 dnl Determine linker rdynamic flag
   1815 if test "$llvm_cv_link_use_export_dynamic" = "yes" ; then
   1816   RDYNAMIC="-Wl,-export-dynamic"
   1817 else
   1818   RDYNAMIC=""
   1819 fi
   1820 AC_SUBST(RDYNAMIC)
   1821 
   1822 dnl===-----------------------------------------------------------------------===
   1823 dnl===
   1824 dnl=== SECTION 10: Specify the output files and generate it
   1825 dnl===
   1826 dnl===-----------------------------------------------------------------------===
   1827 
   1828 dnl Configure header files
   1829 dnl WARNING: dnl If you add or remove any of the following config headers, then
   1830 dnl you MUST also update Makefile so that the variable FilesToConfig
   1831 dnl contains the same list of files as AC_CONFIG_HEADERS below. This ensures the
   1832 dnl files can be updated automatically when their *.in sources change.
   1833 AC_CONFIG_HEADERS([include/llvm/Config/config.h include/llvm/Config/llvm-config.h])
   1834 AH_TOP([#ifndef CONFIG_H
   1835 #define CONFIG_H])
   1836 AH_BOTTOM([#endif])
   1837 
   1838 AC_CONFIG_FILES([include/llvm/Config/Targets.def])
   1839 AC_CONFIG_FILES([include/llvm/Config/AsmPrinters.def])
   1840 AC_CONFIG_FILES([include/llvm/Config/AsmParsers.def])
   1841 AC_CONFIG_FILES([include/llvm/Config/Disassemblers.def])
   1842 AC_CONFIG_HEADERS([include/llvm/Support/DataTypes.h])
   1843 
   1844 dnl Configure the makefile's configuration data
   1845 AC_CONFIG_FILES([Makefile.config])
   1846 
   1847 dnl Configure the RPM spec file for LLVM
   1848 AC_CONFIG_FILES([llvm.spec])
   1849 
   1850 dnl Configure doxygen's configuration file
   1851 AC_CONFIG_FILES([docs/doxygen.cfg])
   1852 
   1853 dnl Configure clang, if present
   1854 if test "${clang_src_root}" = ""; then
   1855   clang_src_root="$srcdir/tools/clang"
   1856 fi
   1857 if test -f ${clang_src_root}/README.txt; then
   1858   dnl Use variables to stay under 80 columns.
   1859   configh="include/clang/Config/config.h"
   1860   doxy="docs/doxygen.cfg"
   1861   AC_CONFIG_HEADERS([tools/clang/${configh}:${clang_src_root}/${configh}.in])
   1862   AC_CONFIG_FILES([tools/clang/${doxy}:${clang_src_root}/${doxy}.in])
   1863 fi
   1864 
   1865 dnl OCaml findlib META file
   1866 AC_CONFIG_FILES([bindings/ocaml/llvm/META.llvm])
   1867 
   1868 dnl Add --program-prefix value to Makefile.rules. Already an ARG variable.
   1869 test "x$program_prefix" = "xNONE" && program_prefix=""
   1870 AC_SUBST([program_prefix])
   1871 
   1872 
   1873 dnl Do special configuration of Makefiles
   1874 AC_CONFIG_COMMANDS([setup],,[llvm_src="${srcdir}"])
   1875 AC_CONFIG_MAKEFILE(Makefile)
   1876 AC_CONFIG_MAKEFILE(Makefile.common)
   1877 AC_CONFIG_MAKEFILE(examples/Makefile)
   1878 AC_CONFIG_MAKEFILE(lib/Makefile)
   1879 AC_CONFIG_MAKEFILE(runtime/Makefile)
   1880 AC_CONFIG_MAKEFILE(test/Makefile)
   1881 AC_CONFIG_MAKEFILE(test/Makefile.tests)
   1882 AC_CONFIG_MAKEFILE(unittests/Makefile)
   1883 AC_CONFIG_MAKEFILE(tools/Makefile)
   1884 AC_CONFIG_MAKEFILE(utils/Makefile)
   1885 AC_CONFIG_MAKEFILE(projects/Makefile)
   1886 AC_CONFIG_MAKEFILE(bindings/Makefile)
   1887 AC_CONFIG_MAKEFILE(bindings/ocaml/Makefile.ocaml)
   1888 
   1889 dnl Finally, crank out the output
   1890 AC_OUTPUT
   1891