Remove projects/sample.

As an example that was not actually being used, it suffered from a slow bitrot.

The two main issues with it were that it had no cmake support and
included a copy of the autoconf directory. The reality is that
autoconf is not easily composable. The lack of composabilty is why we
have clang options in llvm's configure. Suggesting that users include
a copy of autoconf/ in their projects seems a bad idea.

We are also in the process of switching to cmake, so pushing autoconf
to new project is probably not what we want.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203728 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 1538 deletions

diff --git a/projects/sample/autoconf/configure.ac b/projects/sample/autoconf/configure.ac
deleted file mode 100644
index 1b58f00c47..0000000000
--- a/projects/sample/autoconf/configure.ac
+++ /dev/null
@@ -1,1538 +0,0 @@
-dnl **************************************************************************
-dnl * Initialize
-dnl **************************************************************************
-AC_INIT([[[SAMPLE]]],[[[x.xx]]],[bugs@yourdomain])
-
-dnl Identify where LLVM source tree is
-LLVM_SRC_ROOT="../.."
-LLVM_OBJ_ROOT="../.."
-
-dnl Find absolute paths to LLVM source and object trees
-LLVM_ABS_SRC_ROOT="`cd $srcdir ; cd $LLVM_SRC_ROOT ; pwd`"
-LLVM_ABS_OBJ_ROOT="`cd $LLVM_OBJ_ROOT ; pwd`"
-
-dnl Tell autoconf that this is an LLVM project being configured
-dnl This provides the --with-llvmsrc and --with-llvmobj options
-LLVM_CONFIG_PROJECT($LLVM_ABS_SRC_ROOT,$LLVM_ABS_OBJ_ROOT)
-
-dnl Try and find an llvm-config in the build directory. We are only using this
-dnl to detect the package level LLVM information (currently just the version),
-dnl so we just whatever one we find regardless of build mode.
-AC_MSG_CHECKING([llvm-config])
-llvm_config_path="`ls -1 $llvm_obj/*/bin/llvm-config 2> /dev/null | head -1`"
-if ! test -f "$llvm_config_path" ; then
-   llvm_config_path="no"
-fi
-AC_MSG_RESULT([$llvm_config_path])
-
-dnl Determine the LLVM version, which may be required by the current Makefile
-dnl rules.
-AC_MSG_CHECKING([LLVM package version])
-if test "$llvm_config_path" != no ; then
-  llvm_package_version=`$llvm_config_path --version`
-else
-  llvm_package_version="unknown";
-fi
-AC_MSG_RESULT([$llvm_package_version])
-AC_SUBST(LLVM_VERSION, [$llvm_package_version])
-
-dnl Verify that the source directory is valid
-AC_CONFIG_SRCDIR(["Makefile.common.in"])
-
-dnl Place all of the extra autoconf files into the config subdirectory. Tell
-dnl various tools where the m4 autoconf macros are.
-AC_CONFIG_AUX_DIR([autoconf])
-
-dnl **************************************************************************
-dnl Begin LLVM configure.ac Import
-dnl **************************************************************************
-dnl
-dnl Derived from LLVM's configure.ac. This was imported directly here so that we
-dnl could reuse LLVM's build infrastructure without introducing a direct source
-dnl dependency on the LLVM files.
-
-dnl We need to check for the compiler up here to avoid anything else
-dnl starting with a different one.
-AC_PROG_CC(clang llvm-gcc gcc)
-AC_PROG_CXX(clang++ llvm-g++ g++)
-AC_PROG_CPP
-
-dnl Configure all of the projects present in our source tree. While we could
-dnl just AC_CONFIG_SUBDIRS on the set of directories in projects that have a
-dnl configure script, that usage of the AC_CONFIG_SUBDIRS macro is deprecated.
-dnl Instead we match on the known projects.
-
-dnl
-dnl One tricky part of doing this is that some projects depend upon other
-dnl projects.  For example, several projects rely upon the LLVM test suite.
-dnl We want to configure those projects first so that their object trees are
-dnl created before running the configure scripts of projects that depend upon
-dnl them.
-dnl
-
-dnl Disable the build of polly, even if it is checked out into tools/polly.
-AC_ARG_ENABLE(polly,
-              AS_HELP_STRING([--enable-polly],
-                             [Use polly if available (default is YES)]),,
-                             enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_POLLY,[1]) ;;
-  no)  AC_SUBST(ENABLE_POLLY,[0]) ;;
-  default) AC_SUBST(ENABLE_POLLY,[1]) ;;
-  *) AC_MSG_ERROR([Invalid setting for --enable-polly. Use "yes" or "no"]) ;;
-esac
-
-
-dnl Check if polly is checked out into tools/polly and configure it if
-dnl available.
-if (test -d ${srcdir}/tools/polly) && (test $ENABLE_POLLY -eq 1) ; then
-  AC_SUBST(LLVM_HAS_POLLY,1)
-  AC_CONFIG_SUBDIRS([tools/polly])
-fi
-
-dnl===-----------------------------------------------------------------------===
-dnl===
-dnl=== SECTION 2: Architecture, target, and host checks
-dnl===
-dnl===-----------------------------------------------------------------------===
-
-dnl Check the target for which we're compiling and the host that will do the
-dnl compilations. This will tell us which LLVM compiler will be used for
-dnl compiling SSA into object code. This needs to be done early because
-dnl following tests depend on it.
-AC_CANONICAL_TARGET
-
-dnl Determine the platform type and cache its value. This helps us configure
-dnl the System library to the correct build platform.
-AC_CACHE_CHECK([type of operating system we're going to host on],
-               [llvm_cv_os_type],
-[case $host in
-  *-*-aix*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="AIX"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-irix*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="IRIX"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-cygwin*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="Cygwin"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-darwin*)
-    llvm_cv_link_all_option="-Wl,-all_load"
-    llvm_cv_no_link_all_option="-Wl,-noall_load"
-    llvm_cv_os_type="Darwin"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-minix*)
-    llvm_cv_link_all_option="-Wl,-all_load"
-    llvm_cv_no_link_all_option="-Wl,-noall_load"
-    llvm_cv_os_type="Minix"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-freebsd* | *-*-kfreebsd-gnu)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="FreeBSD"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-openbsd*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="OpenBSD"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-netbsd*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="NetBSD"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-dragonfly*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="DragonFly"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-hpux*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="HP-UX"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-interix*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="Interix"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-linux*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="Linux"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-gnu*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="GNU"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-solaris*)
-    llvm_cv_link_all_option="-Wl,-z,allextract"
-    llvm_cv_no_link_all_option="-Wl,-z,defaultextract"
-    llvm_cv_os_type="SunOS"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-auroraux*)
-    llvm_cv_link_all_option="-Wl,-z,allextract"
-    llvm_cv_link_all_option="-Wl,-z,defaultextract"
-    llvm_cv_os_type="AuroraUX"
-    llvm_cv_platform_type="Unix" ;;
-  *-*-win32*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="Win32"
-    llvm_cv_platform_type="Win32" ;;
-  *-*-mingw*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="MingW"
-    llvm_cv_platform_type="Win32" ;;
-  *-*-haiku*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="Haiku"
-    llvm_cv_platform_type="Unix" ;;
-  *-unknown-eabi*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="Freestanding"
-    llvm_cv_platform_type="Unix" ;;
-  *-unknown-elf*)
-    llvm_cv_link_all_option="-Wl,--whole-archive"
-    llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
-    llvm_cv_os_type="Freestanding"
-    llvm_cv_platform_type="Unix" ;;
-  *)
-    llvm_cv_link_all_option=""
-    llvm_cv_no_link_all_option=""
-    llvm_cv_os_type="Unknown"
-    llvm_cv_platform_type="Unknown" ;;
-esac])
-
-AC_CACHE_CHECK([type of operating system we're going to target],
-               [llvm_cv_target_os_type],
-[case $target in
-  *-*-aix*)
-    llvm_cv_target_os_type="AIX" ;;
-  *-*-irix*)
-    llvm_cv_target_os_type="IRIX" ;;
-  *-*-cygwin*)
-    llvm_cv_target_os_type="Cygwin" ;;
-  *-*-darwin*)
-    llvm_cv_target_os_type="Darwin" ;;
-  *-*-minix*)
-    llvm_cv_target_os_type="Minix" ;;
-  *-*-freebsd* | *-*-kfreebsd-gnu)
-    llvm_cv_target_os_type="FreeBSD" ;;
-  *-*-openbsd*)
-    llvm_cv_target_os_type="OpenBSD" ;;
-  *-*-netbsd*)
-    llvm_cv_target_os_type="NetBSD" ;;
-  *-*-dragonfly*)
-    llvm_cv_target_os_type="DragonFly" ;;
-  *-*-hpux*)
-    llvm_cv_target_os_type="HP-UX" ;;
-  *-*-interix*)
-    llvm_cv_target_os_type="Interix" ;;
-  *-*-linux*)
-    llvm_cv_target_os_type="Linux" ;;
-  *-*-gnu*)
-    llvm_cv_target_os_type="GNU" ;;
-  *-*-solaris*)
-    llvm_cv_target_os_type="SunOS" ;;
-  *-*-auroraux*)
-    llvm_cv_target_os_type="AuroraUX" ;;
-  *-*-win32*)
-    llvm_cv_target_os_type="Win32" ;;
-  *-*-mingw*)
-    llvm_cv_target_os_type="MingW" ;;
-  *-*-haiku*)
-    llvm_cv_target_os_type="Haiku" ;;
-  *-*-rtems*)
-    llvm_cv_target_os_type="RTEMS" ;;
-  *-*-nacl*)
-    llvm_cv_target_os_type="NativeClient" ;;
-  *-unknown-eabi*)
-    llvm_cv_target_os_type="Freestanding" ;;
-  *)
-    llvm_cv_target_os_type="Unknown" ;;
-esac])
-
-dnl Make sure we aren't attempting to configure for an unknown system
-if test "$llvm_cv_os_type" = "Unknown" ; then
-  AC_MSG_ERROR([Operating system is unknown, configure can't continue])
-fi
-
-dnl Set the "OS" Makefile variable based on the platform type so the
-dnl makefile can configure itself to specific build hosts
-AC_SUBST(OS,$llvm_cv_os_type)
-AC_SUBST(HOST_OS,$llvm_cv_os_type)
-AC_SUBST(TARGET_OS,$llvm_cv_target_os_type)
-
-dnl Set the LINKALL and NOLINKALL Makefile variables based on the platform
-AC_SUBST(LINKALL,$llvm_cv_link_all_option)
-AC_SUBST(NOLINKALL,$llvm_cv_no_link_all_option)
-
-dnl Set the "LLVM_ON_*" variables based on llvm_cv_platform_type
-dnl This is used by lib/Support to determine the basic kind of implementation
-dnl to use.
-case $llvm_cv_platform_type in
-  Unix)
-    AC_DEFINE([LLVM_ON_UNIX],[1],[Define if this is Unixish platform])
-    AC_SUBST(LLVM_ON_UNIX,[1])
-    AC_SUBST(LLVM_ON_WIN32,[0])
-    ;;
-  Win32)
-    AC_DEFINE([LLVM_ON_WIN32],[1],[Define if this is Win32ish platform])
-    AC_SUBST(LLVM_ON_UNIX,[0])
-    AC_SUBST(LLVM_ON_WIN32,[1])
-    ;;
-esac
-
-dnl Determine what our target architecture is and configure accordingly.
-dnl This will allow Makefiles to make a distinction between the hardware and
-dnl the OS.
-AC_CACHE_CHECK([target architecture],[llvm_cv_target_arch],
-[case $target in
-  i?86-*)                 llvm_cv_target_arch="x86" ;;
-  amd64-* | x86_64-*)     llvm_cv_target_arch="x86_64" ;;
-  sparc*-*)               llvm_cv_target_arch="Sparc" ;;
-  powerpc*-*)             llvm_cv_target_arch="PowerPC" ;;
-  arm*-*)                 llvm_cv_target_arch="ARM" ;;
-  aarch64*-*)             llvm_cv_target_arch="AArch64" ;;
-  mips-* | mips64-*)      llvm_cv_target_arch="Mips" ;;
-  mipsel-* | mips64el-*)  llvm_cv_target_arch="Mips" ;;
-  xcore-*)                llvm_cv_target_arch="XCore" ;;
-  msp430-*)               llvm_cv_target_arch="MSP430" ;;
-  hexagon-*)              llvm_cv_target_arch="Hexagon" ;;
-  nvptx-*)                llvm_cv_target_arch="NVPTX" ;;
-  s390x-*)                llvm_cv_target_arch="SystemZ" ;;
-  *)                      llvm_cv_target_arch="Unknown" ;;
-esac])
-
-if test "$llvm_cv_target_arch" = "Unknown" ; then
-  AC_MSG_WARN([Configuring LLVM for an unknown target archicture])
-fi
-
-# Determine the LLVM native architecture for the target
-case "$llvm_cv_target_arch" in
-    x86)     LLVM_NATIVE_ARCH="X86" ;;
-    x86_64)  LLVM_NATIVE_ARCH="X86" ;;
-    *)       LLVM_NATIVE_ARCH="$llvm_cv_target_arch" ;;
-esac
-
-dnl Define a substitution, ARCH, for the target architecture
-AC_SUBST(ARCH,$llvm_cv_target_arch)
-
-dnl Check for the endianness of the target
-AC_C_BIGENDIAN(AC_SUBST([ENDIAN],[big]),AC_SUBST([ENDIAN],[little]))
-
-dnl Check for build platform executable suffix if we're crosscompiling
-if test "$cross_compiling" = yes; then
-  AC_SUBST(LLVM_CROSS_COMPILING, [1])
-  AC_BUILD_EXEEXT
-  ac_build_prefix=${build_alias}-
-  AC_CHECK_PROG(BUILD_CXX, ${ac_build_prefix}g++, ${ac_build_prefix}g++)
-  if test -z "$BUILD_CXX"; then
-     AC_CHECK_PROG(BUILD_CXX, g++, g++)
-     if test -z "$BUILD_CXX"; then
-       AC_CHECK_PROG(BUILD_CXX, c++, c++, , , /usr/ucb/c++)
-     fi
-  fi
-else
-  AC_SUBST(LLVM_CROSS_COMPILING, [0])
-fi
-
-dnl Check to see if there's a .svn or .git directory indicating that this
-dnl build is being done from a checkout. This sets up several defaults for
-dnl the command line switches. When we build with a checkout directory,
-dnl we get a debug with assertions turned on. Without, we assume a source
-dnl release and we get an optimized build without assertions.
-dnl See --enable-optimized and --enable-assertions below
-if test -d ".svn" -o -d "${srcdir}/.svn" -o -d ".git" -o -d "${srcdir}/.git"; then
-  cvsbuild="yes"
-  optimize="no"
-  AC_SUBST(CVSBUILD,[[CVSBUILD=1]])
-else
-  cvsbuild="no"
-  optimize="yes"
-fi
-
-dnl===-----------------------------------------------------------------------===
-dnl===
-dnl=== SECTION 3: Command line arguments for the configure script.
-dnl===
-dnl===-----------------------------------------------------------------------===
-
-dnl --enable-libcpp : check whether or not to use libc++ on the command line
-AC_ARG_ENABLE(libcpp,
-              AS_HELP_STRING([--enable-libcpp],
-                             [Use libc++ if available (default is NO)]),,
-                             enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_LIBCPP,[1]) ;;
-  no)  AC_SUBST(ENABLE_LIBCPP,[0]) ;;
-  default) AC_SUBST(ENABLE_LIBCPP,[0]);;
-  *) AC_MSG_ERROR([Invalid setting for --enable-libcpp. Use "yes" or "no"]) ;;
-esac
-
-dnl --enable-cxx11 : check whether or not to use -std=c++11 on the command line
-AC_ARG_ENABLE(cxx11,
-              AS_HELP_STRING([--enable-cxx11],
-                             [Use c++11 if available (default is NO)]),,
-                             enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_CXX11,[1]) ;;
-  no)  AC_SUBST(ENABLE_CXX11,[0]) ;;
-  default) AC_SUBST(ENABLE_CXX11,[0]);;
-  *) AC_MSG_ERROR([Invalid setting for --enable-cxx11. Use "yes" or "no"]) ;;
-esac
-
-dnl --enable-optimized : check whether they want to do an optimized build:
-AC_ARG_ENABLE(optimized, AS_HELP_STRING(
- --enable-optimized,[Compile with optimizations enabled (default is NO)]),,enableval=$optimize)
-if test ${enableval} = "no" ; then
-  AC_SUBST(ENABLE_OPTIMIZED,[[]])
-else
-  AC_SUBST(ENABLE_OPTIMIZED,[[ENABLE_OPTIMIZED=1]])
-fi
-
-dnl --enable-profiling : check whether they want to do a profile build:
-AC_ARG_ENABLE(profiling, AS_HELP_STRING(
- --enable-profiling,[Compile with profiling enabled (default is NO)]),,enableval="no")
-if test ${enableval} = "no" ; then
-  AC_SUBST(ENABLE_PROFILING,[[]])
-else
-  AC_SUBST(ENABLE_PROFILING,[[ENABLE_PROFILING=1]])
-fi
-
-dnl --enable-assertions : check whether they want to turn on assertions or not:
-AC_ARG_ENABLE(assertions,AS_HELP_STRING(
-  --enable-assertions,[Compile with assertion checks enabled (default is YES)]),, enableval="yes")
-if test ${enableval} = "yes" ; then
-  AC_SUBST(DISABLE_ASSERTIONS,[[]])
-else
-  AC_SUBST(DISABLE_ASSERTIONS,[[DISABLE_ASSERTIONS=1]])
-fi
-
-dnl --enable-werror : check whether we want Werror on by default
-AC_ARG_ENABLE(werror,AS_HELP_STRING(
-  --enable-werror,[Compile with -Werror enabled (default is NO)]),, enableval="no")
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_WERROR,[1]) ;;
-  no)  AC_SUBST(ENABLE_WERROR,[0]) ;;
-  default) AC_SUBST(ENABLE_WERROR,[0]);;
-  *) AC_MSG_ERROR([Invalid setting for --enable-werror. Use "yes" or "no"]) ;;
-esac
-
-dnl --enable-expensive-checks : check whether they want to turn on expensive debug checks:
-AC_ARG_ENABLE(expensive-checks,AS_HELP_STRING(
-  --enable-expensive-checks,[Compile with expensive debug checks enabled (default is NO)]),, enableval="no")
-if test ${enableval} = "yes" ; then
-  AC_SUBST(ENABLE_EXPENSIVE_CHECKS,[[ENABLE_EXPENSIVE_CHECKS=1]])
-  AC_SUBST(EXPENSIVE_CHECKS,[[yes]])
-else
-  AC_SUBST(ENABLE_EXPENSIVE_CHECKS,[[]])
-  AC_SUBST(EXPENSIVE_CHECKS,[[no]])
-fi
-
-dnl --enable-debug-runtime : should runtime libraries have debug symbols?
-AC_ARG_ENABLE(debug-runtime,
-   AS_HELP_STRING(--enable-debug-runtime,[Build runtime libs with debug symbols (default is NO)]),,enableval=no)
-if test ${enableval} = "no" ; then
-  AC_SUBST(DEBUG_RUNTIME,[[]])
-else
-  AC_SUBST(DEBUG_RUNTIME,[[DEBUG_RUNTIME=1]])
-fi
-
-dnl --enable-debug-symbols : should even optimized compiler libraries
-dnl have debug symbols?
-AC_ARG_ENABLE(debug-symbols,
-   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)
-if test ${enableval} = "no" ; then
-  AC_SUBST(DEBUG_SYMBOLS,[[]])
-else
-  AC_SUBST(DEBUG_SYMBOLS,[[DEBUG_SYMBOLS=1]])
-fi
-
-dnl --enable-jit: check whether they want to enable the jit
-AC_ARG_ENABLE(jit,
-  AS_HELP_STRING(--enable-jit,
-                 [Enable Just In Time Compiling (default is YES)]),,
-  enableval=default)
-if test ${enableval} = "no"
-then
-  AC_SUBST(JIT,[[]])
-else
-  case "$llvm_cv_target_arch" in
-    x86)         AC_SUBST(TARGET_HAS_JIT,1) ;;
-    Sparc)       AC_SUBST(TARGET_HAS_JIT,0) ;;
-    PowerPC)     AC_SUBST(TARGET_HAS_JIT,1) ;;
-    x86_64)      AC_SUBST(TARGET_HAS_JIT,1) ;;
-    ARM)         AC_SUBST(TARGET_HAS_JIT,1) ;;
-    AArch64)     AC_SUBST(TARGET_HAS_JIT,0) ;;
-    Mips)        AC_SUBST(TARGET_HAS_JIT,1) ;;
-    XCore)       AC_SUBST(TARGET_HAS_JIT,0) ;;
-    MSP430)      AC_SUBST(TARGET_HAS_JIT,0) ;;
-    Hexagon)     AC_SUBST(TARGET_HAS_JIT,0) ;;
-    NVPTX)       AC_SUBST(TARGET_HAS_JIT,0) ;;
-    SystemZ)     AC_SUBST(TARGET_HAS_JIT,1) ;;
-    *)           AC_SUBST(TARGET_HAS_JIT,0) ;;
-  esac
-fi
-
-dnl Allow enablement of building and installing docs
-AC_ARG_ENABLE(docs,
-              AS_HELP_STRING([--enable-docs],
-                             [Build documents (default is YES)]),,
-                             enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_DOCS,[1]) ;;
-  no)  AC_SUBST(ENABLE_DOCS,[0]) ;;
-  default) AC_SUBST(ENABLE_DOCS,[1]) ;;
-  *) AC_MSG_ERROR([Invalid setting for --enable-docs. Use "yes" or "no"]) ;;
-esac
-
-dnl Allow enablement of doxygen generated documentation
-AC_ARG_ENABLE(doxygen,
-              AS_HELP_STRING([--enable-doxygen],
-                             [Build doxygen documentation (default is NO)]),,
-                             enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_DOXYGEN,[1]) ;;
-  no)  AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
-  default) AC_SUBST(ENABLE_DOXYGEN,[0]) ;;
-  *) AC_MSG_ERROR([Invalid setting for --enable-doxygen. Use "yes" or "no"]) ;;
-esac
-
-dnl Allow disablement of threads
-AC_ARG_ENABLE(threads,
-              AS_HELP_STRING([--enable-threads],
-                             [Use threads if available (default is YES)]),,
-                             enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_THREADS,[1]) ;;
-  no)  AC_SUBST(ENABLE_THREADS,[0]) ;;
-  default) AC_SUBST(ENABLE_THREADS,[1]) ;;
-  *) AC_MSG_ERROR([Invalid setting for --enable-threads. Use "yes" or "no"]) ;;
-esac
-AC_DEFINE_UNQUOTED([ENABLE_THREADS],$ENABLE_THREADS,[Define if threads enabled])
-
-dnl Allow disablement of pthread.h
-AC_ARG_ENABLE(pthreads,
-              AS_HELP_STRING([--enable-pthreads],
-                             [Use pthreads if available (default is YES)]),,
-                             enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_PTHREADS,[1]) ;;
-  no)  AC_SUBST(ENABLE_PTHREADS,[0]) ;;
-  default) AC_SUBST(ENABLE_PTHREADS,[1]) ;;
-  *) AC_MSG_ERROR([Invalid setting for --enable-pthreads. Use "yes" or "no"]) ;;
-esac
-
-dnl Allow disablement of zlib
-AC_ARG_ENABLE(zlib,
-              AS_HELP_STRING([--enable-zlib],
-                             [Use zlib for compression/decompression if
-                              available (default is YES)]),,
-                              enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(LLVM_ENABLE_ZLIB,[1]) ;;
-  no)  AC_SUBST(LLVM_ENABLE_ZLIB,[0]) ;;
-  default) AC_SUBST(LLVM_ENABLE_ZLIB,[1]) ;;
-  *) AC_MSG_ERROR([Invalid setting for --enable-zlib. Use "yes" or "no"]) ;;
-esac
-AC_DEFINE_UNQUOTED([LLVM_ENABLE_ZLIB],$LLVM_ENABLE_ZLIB,
-                   [Define if zlib is enabled])
-
-dnl Allow building without position independent code
-AC_ARG_ENABLE(pic,
-  AS_HELP_STRING([--enable-pic],
-                 [Build LLVM with Position Independent Code (default is YES)]),,
-                 enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_PIC,[1]) ;;
-  no)  AC_SUBST(ENABLE_PIC,[0]) ;;
-  default) AC_SUBST(ENABLE_PIC,[1]) ;;
-  *) AC_MSG_ERROR([Invalid setting for --enable-pic. Use "yes" or "no"]) ;;
-esac
-AC_DEFINE_UNQUOTED([ENABLE_PIC],$ENABLE_PIC,
-                   [Define if position independent code is enabled])
-
-dnl Allow building a shared library and linking tools against it.
-AC_ARG_ENABLE(shared,
-  AS_HELP_STRING([--enable-shared],
-                 [Build a shared library and link tools against it (default is NO)]),,
-                 enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_SHARED,[1]) ;;
-  no)  AC_SUBST(ENABLE_SHARED,[0]) ;;
-  default) AC_SUBST(ENABLE_SHARED,[0]) ;;
-  *) AC_MSG_ERROR([Invalid setting for --enable-shared. Use "yes" or "no"]) ;;
-esac
-
-dnl Allow libstdc++ is embedded in LLVM.dll.
-AC_ARG_ENABLE(embed-stdcxx,
-  AS_HELP_STRING([--enable-embed-stdcxx],
-                 [Build a shared library with embedded libstdc++ for Win32 DLL (default is YES)]),,
-                 enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_EMBED_STDCXX,[1]) ;;
-  no)  AC_SUBST(ENABLE_EMBED_STDCXX,[0]) ;;
-  default) AC_SUBST(ENABLE_EMBED_STDCXX,[1]) ;;
-  *) AC_MSG_ERROR([Invalid setting for --enable-embed-stdcxx. Use "yes" or "no"]) ;;
-esac
-
-dnl Enable embedding timestamp information into build.
-AC_ARG_ENABLE(timestamps,
-  AS_HELP_STRING([--enable-timestamps],
-                 [Enable embedding timestamp information in build (default is YES)]),,
-                 enableval=default)
-case "$enableval" in
-  yes) AC_SUBST(ENABLE_TIMESTAMPS,[1]) ;;
-  no)  AC_SUBST(ENABLE_TIMESTAMPS,[0]) ;;
-  default) AC_SUBST(ENABLE_TIMESTAMPS,[1]) ;;
-  *) AC_MSG_ERROR([Invalid setting for --enable-timestamps. Use "yes" or "no"]) ;;
-esac
-AC_DEFINE_UNQUOTED([ENABLE_TIMESTAMPS],$ENABLE_TIMESTAMPS,
-                   [Define if timestamp information (e.g., __DATE___) is allowed])
-
-dnl Allow specific targets to be specified for building (or not)
-TARGETS_TO_BUILD=""
-AC_ARG_ENABLE([targets],AS_HELP_STRING([--enable-targets],
-    [Build specific host targets: all or target1,target2,... Valid targets are:
-     host, x86, x86_64, sparc, powerpc, arm, aarch64, mips, hexagon,
-     xcore, msp430, nvptx, systemz, r600, and cpp (default=all)]),,
-    enableval=all)
-if test "$enableval" = host-only ; then
-  enableval=host
-fi
-case "$enableval" in
-  all) TARGETS_TO_BUILD="X86 Sparc PowerPC AArch64 ARM Mips XCore MSP430 CppBackend NVPTX Hexagon SystemZ R600" ;;
-  *)for a_target in `echo $enableval|sed -e 's/,/ /g' ` ; do
-      case "$a_target" in
-        x86)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
-        x86_64)   TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
-        sparc)    TARGETS_TO_BUILD="Sparc $TARGETS_TO_BUILD" ;;
-        powerpc)  TARGETS_TO_BUILD="PowerPC $TARGETS_TO_BUILD" ;;
-        aarch64)  TARGETS_TO_BUILD="AArch64 $TARGETS_TO_BUILD" ;;
-        arm)      TARGETS_TO_BUILD="ARM $TARGETS_TO_BUILD" ;;
-        mips)     TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
-        mipsel)   TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
-        mips64)   TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
-        mips64el) TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
-        xcore)    TARGETS_TO_BUILD="XCore $TARGETS_TO_BUILD" ;;
-        msp430)   TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
-        cpp)      TARGETS_TO_BUILD="CppBackend $TARGETS_TO_BUILD" ;;
-        hexagon)  TARGETS_TO_BUILD="Hexagon $TARGETS_TO_BUILD" ;;
-        nvptx)    TARGETS_TO_BUILD="NVPTX $TARGETS_TO_BUILD" ;;
-        systemz)  TARGETS_TO_BUILD="SystemZ $TARGETS_TO_BUILD" ;;
-        r600)     TARGETS_TO_BUILD="R600 $TARGETS_TO_BUILD" ;;
-        host) case "$llvm_cv_target_arch" in
-            x86)         TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
-            x86_64)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
-            Sparc)       TARGETS_TO_BUILD="Sparc $TARGETS_TO_BUILD" ;;
-            PowerPC)     TARGETS_TO_BUILD="PowerPC $TARGETS_TO_BUILD" ;;
-            AArch64)     TARGETS_TO_BUILD="AArch64 $TARGETS_TO_BUILD" ;;
-            ARM)         TARGETS_TO_BUILD="ARM $TARGETS_TO_BUILD" ;;
-            Mips)        TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
-            XCore)       TARGETS_TO_BUILD="XCore $TARGETS_TO_BUILD" ;;
-            MSP430)      TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
-            Hexagon)     TARGETS_TO_BUILD="Hexagon $TARGETS_TO_BUILD" ;;
-            NVPTX)       TARGETS_TO_BUILD="NVPTX $TARGETS_TO_BUILD" ;;
-            SystemZ)     TARGETS_TO_BUILD="SystemZ $TARGETS_TO_BUILD" ;;
-            *)       AC_MSG_ERROR([Can not set target to build]) ;;
-          esac ;;
-        *) AC_MSG_ERROR([Unrecognized target $a_target]) ;;
-      esac
-  done
-  ;;
-esac
-AC_SUBST(TARGETS_TO_BUILD,$TARGETS_TO_BUILD)
-
-# Determine whether we are building LLVM support for the native architecture.
-# If so, define LLVM_NATIVE_ARCH to that LLVM target.
-for a_target in $TARGETS_TO_BUILD; do
-  if test "$a_target" = "$LLVM_NATIVE_ARCH"; then
-    AC_DEFINE_UNQUOTED(LLVM_NATIVE_ARCH, $LLVM_NATIVE_ARCH,
-      [LLVM architecture name for the native architecture, if available])
-    LLVM_NATIVE_TARGET="LLVMInitialize${LLVM_NATIVE_ARCH}Target"
-    LLVM_NATIVE_TARGETINFO="LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo"
-    LLVM_NATIVE_TARGETMC="LLVMInitialize${LLVM_NATIVE_ARCH}TargetMC"
-    LLVM_NATIVE_ASMPRINTER="LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter"
-    if test -f ${srcdir}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/Makefile ; then
-      LLVM_NATIVE_ASMPARSER="LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser"
-    fi
-    if test -f ${srcdir}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/Makefile ; then
-      LLVM_NATIVE_DISASSEMBLER="LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler"
-    fi
-    AC_DEFINE_UNQUOTED(LLVM_NATIVE_TARGET, $LLVM_NATIVE_TARGET,
-      [LLVM name for the native Target init function, if available])
-    AC_DEFINE_UNQUOTED(LLVM_NATIVE_TARGETINFO, $LLVM_NATIVE_TARGETINFO,
-      [LLVM name for the native TargetInfo init function, if available])
-    AC_DEFINE_UNQUOTED(LLVM_NATIVE_TARGETMC, $LLVM_NATIVE_TARGETMC,
-      [LLVM name for the native target MC init function, if available])
-    AC_DEFINE_UNQUOTED(LLVM_NATIVE_ASMPRINTER, $LLVM_NATIVE_ASMPRINTER,
-      [LLVM name for the native AsmPrinter init function, if available])
-    if test -f ${srcdir}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/Makefile ; then
-      AC_DEFINE_UNQUOTED(LLVM_NATIVE_ASMPARSER, $LLVM_NATIVE_ASMPARSER,
-       [LLVM name for the native AsmParser init function, if available])
-    fi
-    if test -f ${srcdir}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/Makefile ; then
-      AC_DEFINE_UNQUOTED(LLVM_NATIVE_DISASSEMBLER, $LLVM_NATIVE_DISASSEMBLER,
-       [LLVM name for the native Disassembler init function, if available])
-    fi
-  fi
-done
-
-# Build the LLVM_TARGET and LLVM_... macros for Targets.def and the individual
-# target feature def files.
-LLVM_ENUM_TARGETS=""
-LLVM_ENUM_ASM_PRINTERS=""
-LLVM_ENUM_ASM_PARSERS=""
-LLVM_ENUM_DISASSEMBLERS=""
-for target_to_build in $TARGETS_TO_BUILD; do
-  LLVM_ENUM_TARGETS="LLVM_TARGET($target_to_build) $LLVM_ENUM_TARGETS"
-  if test -f ${srcdir}/lib/Target/${target_to_build}/*AsmPrinter.cpp ; then
-    LLVM_ENUM_ASM_PRINTERS="LLVM_ASM_PRINTER($target_to_build) $LLVM_ENUM_ASM_PRINTERS";
-  fi
-  if test -f ${srcdir}/lib/Target/${target_to_build}/AsmParser/Makefile ; then
-    LLVM_ENUM_ASM_PARSERS="LLVM_ASM_PARSER($target_to_build) $LLVM_ENUM_ASM_PARSERS";
-  fi
-  if test -f ${srcdir}/lib/Target/${target_to_build}/Disassembler/Makefile ; then
-    LLVM_ENUM_DISASSEMBLERS="LLVM_DISASSEMBLER($target_to_build) $LLVM_ENUM_DISASSEMBLERS";
-  fi
-done
-AC_SUBST(LLVM_ENUM_TARGETS)
-AC_SUBST(LLVM_ENUM_ASM_PRINTERS)
-AC_SUBST(LLVM_ENUM_ASM_PARSERS)
-AC_SUBST(LLVM_ENUM_DISASSEMBLERS)
-
-dnl Override the option to use for optimized builds.
-AC_ARG_WITH(optimize-option,
-  AS_HELP_STRING([--with-optimize-option],
-                 [Select the compiler options to use for optimized builds]),,
-                 withval=default)
-AC_MSG_CHECKING([optimization flags])
-case "$withval" in
-  default)
-    case "$llvm_cv_os_type" in
-    FreeBSD) optimize_option=-O2 ;;
-    MingW) optimize_option=-O2 ;;
-    *)     optimize_option=-O3 ;;
-    esac ;;
-  *) optimize_option="$withval" ;;
-esac
-AC_SUBST(OPTIMIZE_OPTION,$optimize_option)
-AC_MSG_RESULT([$optimize_option])
-
-dnl Specify extra build options
-AC_ARG_WITH(extra-options,
-  AS_HELP_STRING([--with-extra-options],
-                 [Specify additional options to compile LLVM with]),,
-                 withval=default)
-case "$withval" in
-  default) EXTRA_OPTIONS= ;;
-  *) EXTRA_OPTIONS=$withval ;;
-esac
-AC_SUBST(EXTRA_OPTIONS,$EXTRA_OPTIONS)
-
-dnl Specify extra linker build options
-AC_ARG_WITH(extra-ld-options,
-  AS_HELP_STRING([--with-extra-ld-options],
-                 [Specify additional options to link LLVM with]),,
-                 withval=default)
-case "$withval" in
-  default) EXTRA_LD_OPTIONS= ;;
-  *) EXTRA_LD_OPTIONS=$withval ;;
-esac
-AC_SUBST(EXTRA_LD_OPTIONS,$EXTRA_LD_OPTIONS)
-
-dnl Allow specific bindings to be specified for building (or not)
-AC_ARG_ENABLE([bindings],AS_HELP_STRING([--enable-bindings],
-    [Build specific language bindings: all,auto,none,{binding-name} (default=auto)]),,
-    enableval=default)
-BINDINGS_TO_BUILD=""
-case "$enableval" in
-  yes | default | auto) BINDINGS_TO_BUILD="auto" ;;
-  all ) BINDINGS_TO_BUILD="ocaml" ;;
-  none | no) BINDINGS_TO_BUILD="" ;;
-  *)for a_binding in `echo $enableval|sed -e 's/,/ /g' ` ; do
-      case "$a_binding" in
-        ocaml) BINDINGS_TO_BUILD="ocaml $BINDINGS_TO_BUILD" ;;
-        *) AC_MSG_ERROR([Unrecognized binding $a_binding]) ;;
-      esac
-  done
-  ;;
-esac
-
-dnl Allow the ocaml libdir to be overridden. This could go in a configure
-dnl script for bindings/ocaml/configure, except that its auto value depends on
-dnl OCAMLC, which is found here to support tests.
-AC_ARG_WITH([ocaml-libdir],
-  [AS_HELP_STRING([--with-ocaml-libdir],
-    [Specify install location for ocaml bindings (default is stdlib)])],
-  [],
-  [withval=auto])
-case "$withval" in
-  auto) with_ocaml_libdir="$withval" ;;
-  /* | [[A-Za-z]]:[[\\/]]*) with_ocaml_libdir="$withval" ;;
-  *) AC_MSG_ERROR([Invalid path for --with-ocaml-libdir. Provide full path]) ;;
-esac
-
-AC_ARG_WITH(clang-resource-dir,
-  AS_HELP_STRING([--with-clang-resource-dir],
-    [Relative directory from the Clang binary for resource files]),,
-    withval="")
-AC_DEFINE_UNQUOTED(CLANG_RESOURCE_DIR,"$withval",
-                   [Relative directory for resource files])
-
-AC_ARG_WITH(c-include-dirs,
-  AS_HELP_STRING([--with-c-include-dirs],
-    [Colon separated list of directories clang will search for headers]),,
-    withval="")
-AC_DEFINE_UNQUOTED(C_INCLUDE_DIRS,"$withval",
-                   [Directories clang will search for headers])
-
-# Clang normally uses the system c++ headers and libraries. With this option,
-# clang will use the ones provided by a gcc installation instead. This option should
-# be passed the same value that was used with --prefix when configuring gcc.
-AC_ARG_WITH(gcc-toolchain,
-  AS_HELP_STRING([--with-gcc-toolchain],
-    [Directory where gcc is installed.]),,
-    withval="")
-AC_DEFINE_UNQUOTED(GCC_INSTALL_PREFIX,"$withval",
-                   [Directory where gcc is installed.])
-
-dnl Allow linking of LLVM with GPLv3 binutils code.
-AC_ARG_WITH(binutils-include,
-  AS_HELP_STRING([--with-binutils-include],
-    [Specify path to binutils/include/ containing plugin-api.h file for gold plugin.]),,
-  withval=default)
-case "$withval" in
-  default) WITH_BINUTILS_INCDIR=default ;;
-  /* | [[A-Za-z]]:[[\\/]]*)      WITH_BINUTILS_INCDIR=$withval ;;
-  *) AC_MSG_ERROR([Invalid path for --with-binutils-include. Provide full path]) ;;
-esac
-if test "x$WITH_BINUTILS_INCDIR" != xdefault ; then
-  AC_SUBST(BINUTILS_INCDIR,$WITH_BINUTILS_INCDIR)
-  if test ! -f "$WITH_BINUTILS_INCDIR/plugin-api.h"; then
-     echo "$WITH_BINUTILS_INCDIR/plugin-api.h"
-     AC_MSG_ERROR([Invalid path to directory containing plugin-api.h.]);
-  fi
-fi
-
-dnl Specify the URL where bug reports should be submitted.
-AC_ARG_WITH(bug-report-url,
-  AS_HELP_STRING([--with-bug-report-url],
-    [Specify the URL where bug reports should be submitted (default=http://llvm.org/bugs/)]),,
-    withval="http://llvm.org/bugs/")
-AC_DEFINE_UNQUOTED(BUG_REPORT_URL,"$withval",
-                   [Bug report URL.])
-
-dnl --enable-terminfo: check whether the user wants to control use of terminfo:
-AC_ARG_ENABLE(terminfo,AS_HELP_STRING(
-  [--enable-terminfo],
-  [Query the terminfo database if available (default is YES)]),
-  [case "$enableval" in
-    yes) llvm_cv_enable_terminfo="yes" ;;
-    no)  llvm_cv_enable_terminfo="no"  ;;
-    *) AC_MSG_ERROR([Invalid setting for --enable-terminfo. Use "yes" or "no"]) ;;
-  esac],
-  llvm_cv_enable_terminfo="yes")
-
-dnl --enable-libffi : check whether the user wants to turn off libffi:
-AC_ARG_ENABLE(libffi,AS_HELP_STRING(
-  --enable-libffi,[Check for the presence of libffi (default is NO)]),
-  [case "$enableval" in
-    yes) llvm_cv_enable_libffi="yes" ;;
-    no)  llvm_cv_enable_libffi="no"  ;;
-    *) AC_MSG_ERROR([Invalid setting for --enable-libffi. Use "yes" or "no"]) ;;
-  esac],
-  llvm_cv_enable_libffi=no)
-
-dnl===-----------------------------------------------------------------------===
-dnl===
-dnl=== SECTION 4: Check for programs we need and that they are the right version
-dnl===
-dnl===-----------------------------------------------------------------------===
-
-AC_PROG_NM
-AC_SUBST(NM)
-
-dnl Check for the tools that the makefiles require
-AC_CHECK_GNU_MAKE
-AC_PROG_LN_S
-AC_PATH_PROG(CMP, [cmp], [cmp])
-AC_PATH_PROG(CP, [cp], [cp])
-AC_PATH_PROG(DATE, [date], [date])
-AC_PATH_PROG(FIND, [find], [find])
-AC_PATH_PROG(GREP, [grep], [grep])
-AC_PATH_PROG(MKDIR,[mkdir],[mkdir])
-AC_PATH_PROG(MV,   [mv],   [mv])
-AC_PROG_RANLIB
-AC_CHECK_TOOL(AR, ar, false)
-AC_PATH_PROG(RM,   [rm],   [rm])
-AC_PATH_PROG(SED,  [sed],  [sed])
-AC_PATH_PROG(TAR,  [tar],  [gtar])
-AC_PATH_PROG(BINPWD,[pwd],  [pwd])
-
-dnl Looking for misc. graph plotting software
-AC_PATH_PROG(GRAPHVIZ, [Graphviz], [echo Graphviz])
-if test "$GRAPHVIZ" != "echo Graphviz" ; then
-  AC_DEFINE([HAVE_GRAPHVIZ],[1],[Define if the Graphviz program is available])
-  dnl If we're targeting for mingw we should emit windows paths, not msys
-  if test "$llvm_cv_os_type" = "MingW" ; then
-    GRAPHVIZ=`echo $GRAPHVIZ | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
-  fi
-  AC_DEFINE_UNQUOTED([LLVM_PATH_GRAPHVIZ],"$GRAPHVIZ${EXEEXT}",
-   [Define to path to Graphviz program if found or 'echo Graphviz' otherwise])
-fi
-AC_PATH_PROG(DOT, [dot], [echo dot])
-if test "$DOT" != "echo dot" ; then
-  AC_DEFINE([HAVE_DOT],[1],[Define if the dot program is available])
-  dnl If we're targeting for mingw we should emit windows paths, not msys
-  if test "$llvm_cv_os_type" = "MingW" ; then
-    DOT=`echo $DOT | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
-  fi
-  AC_DEFINE_UNQUOTED([LLVM_PATH_DOT],"$DOT${EXEEXT}",
-   [Define to path to dot program if found or 'echo dot' otherwise])
-fi
-AC_PATH_PROG(FDP, [fdp], [echo fdp])
-if test "$FDP" != "echo fdp" ; then
-  AC_DEFINE([HAVE_FDP],[1],[Define if the neat program is available])
-  dnl If we're targeting for mingw we should emit windows paths, not msys
-  if test "$llvm_cv_os_type" = "MingW" ; then
-    FDP=`echo $FDP | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
-  fi
-  AC_DEFINE_UNQUOTED([LLVM_PATH_FDP],"$FDP${EXEEXT}",
-   [Define to path to fdp program if found or 'echo fdp' otherwise])
-fi
-AC_PATH_PROG(NEATO, [neato], [echo neato])
-if test "$NEATO" != "echo neato" ; then
-  AC_DEFINE([HAVE_NEATO],[1],[Define if the neat program is available])
-  dnl If we're targeting for mingw we should emit windows paths, not msys
-  if test "$llvm_cv_os_type" = "MingW" ; then
-    NEATO=`echo $NEATO | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
-  fi
-  AC_DEFINE_UNQUOTED([LLVM_PATH_NEATO],"$NEATO${EXEEXT}",
-   [Define to path to neato program if found or 'echo neato' otherwise])
-fi
-AC_PATH_PROG(TWOPI, [twopi], [echo twopi])
-if test "$TWOPI" != "echo twopi" ; then
-  AC_DEFINE([HAVE_TWOPI],[1],[Define if the neat program is available])
-  dnl If we're targeting for mingw we should emit windows paths, not msys
-  if test "$llvm_cv_os_type" = "MingW" ; then
-    TWOPI=`echo $TWOPI | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
-  fi
-  AC_DEFINE_UNQUOTED([LLVM_PATH_TWOPI],"$TWOPI${EXEEXT}",
-   [Define to path to twopi program if found or 'echo twopi' otherwise])
-fi
-AC_PATH_PROG(CIRCO, [circo], [echo circo])
-if test "$CIRCO" != "echo circo" ; then
-  AC_DEFINE([HAVE_CIRCO],[1],[Define if the neat program is available])
-  dnl If we're targeting for mingw we should emit windows paths, not msys
-  if test "$llvm_cv_os_type" = "MingW" ; then
-    CIRCO=`echo $CIRCO | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
-  fi
-  AC_DEFINE_UNQUOTED([LLVM_PATH_CIRCO],"$CIRCO${EXEEXT}",
-   [Define to path to circo program if found or 'echo circo' otherwise])
-fi
-AC_PATH_PROGS(GV, [gv gsview32], [echo gv])
-if test "$GV" != "echo gv" ; then
-  AC_DEFINE([HAVE_GV],[1],[Define if the gv program is available])
-  dnl If we're targeting for mingw we should emit windows paths, not msys
-  if test "$llvm_cv_os_type" = "MingW" ; then
-    GV=`echo $GV | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
-  fi
-  AC_DEFINE_UNQUOTED([LLVM_PATH_GV],"$GV${EXEEXT}",
-   [Define to path to gv program if found or 'echo gv' otherwise])
-fi
-AC_PATH_PROG(DOTTY, [dotty], [echo dotty])
-if test "$DOTTY" != "echo dotty" ; then
-  AC_DEFINE([HAVE_DOTTY],[1],[Define if the dotty program is available])
-  dnl If we're targeting for mingw we should emit windows paths, not msys
-  if test "$llvm_cv_os_type" = "MingW" ; then
-    DOTTY=`echo $DOTTY | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
-  fi
-  AC_DEFINE_UNQUOTED([LLVM_PATH_DOTTY],"$DOTTY${EXEEXT}",
-   [Define to path to dotty program if found or 'echo dotty' otherwise])
-fi
-AC_PATH_PROG(XDOT_PY, [xdot.py], [echo xdot.py])
-if test "$XDOT_PY" != "echo xdot.py" ; then
-  AC_DEFINE([HAVE_XDOT_PY],[1],[Define if the xdot.py program is available])
-  dnl If we're targeting for mingw we should emit windows paths, not msys
-  if test "$llvm_cv_os_type" = "MingW" ; then
-    XDOT_PY=`echo $XDOT_PY | sed 's/^\/\([[A-Za-z]]\)\//\1:\//' `
-  fi
-  AC_DEFINE_UNQUOTED([LLVM_PATH_XDOT_PY],"$XDOT_PY${EXEEXT}",
-   [Define to path to xdot.py program if found or 'echo xdot.py' otherwise])
-fi
-
-dnl Find the install program
-AC_PROG_INSTALL
-dnl Prepend src dir to install path dir if it's a relative path
-dnl This is a hack for installs that take place in something other
-dnl than the top level.
-case "$INSTALL" in
- [[\\/$]]* | ?:[[\\/]]* ) ;;
- *)  INSTALL="\\\$(TOPSRCDIR)/$INSTALL" ;;
-esac
-
-dnl Checks for documentation and testing tools that we can do without. If these
-dnl are not found then they are set to "true" which always succeeds but does
-dnl nothing. This just lets the build output show that we could have done
-dnl something if the tool was available.
-AC_PATH_PROG(BZIP2, [bzip2])
-AC_PATH_PROG(CAT, [cat])
-AC_PATH_PROG(DOXYGEN, [doxygen])
-AC_PATH_PROG(GROFF, [groff])
-AC_PATH_PROG(GZIPBIN, [gzip])
-AC_PATH_PROG(POD2HTML, [pod2html])
-AC_PATH_PROG(POD2MAN, [pod2man])
-AC_PATH_PROG(PDFROFF, [pdfroff])
-AC_PATH_PROG(RUNTEST, [runtest])
-DJ_AC_PATH_TCLSH
-AC_PATH_PROG(ZIP, [zip])
-AC_PATH_PROGS(OCAMLC, [ocamlc])
-AC_PATH_PROGS(OCAMLOPT, [ocamlopt])
-AC_PATH_PROGS(OCAMLDEP, [ocamldep])
-AC_PATH_PROGS(OCAMLDOC, [ocamldoc])
-AC_PATH_PROGS(GAS, [gas as])
-
-dnl Get the version of the linker in use.
-AC_LINK_GET_VERSION
-
-dnl Determine whether the linker supports the -R option.
-AC_LINK_USE_R
-
-dnl Determine whether the compiler supports the -rdynamic option.
-AC_LINK_EXPORT_DYNAMIC
-
-dnl Determine whether the linker supports the --version-script option.
-AC_LINK_VERSION_SCRIPT
-
-AC_MSG_CHECKING([tool compatibility])
-
-dnl Ensure that compilation tools are GCC or a GNU compatible compiler such as
-dnl ICC; we use GCC specific options in the makefiles so the compiler needs
-dnl to support those options.
-dnl "icc" emits gcc signatures
-dnl "icc -no-gcc" emits no gcc signature BUT is still compatible
-ICC=no
-IXX=no
-case $CC in
-  icc*|icpc*)
-    ICC=yes
-    IXX=yes
-    ;;
-   *)
-    ;;
-esac
-
-if test "$GCC" != "yes" && test "$ICC" != "yes"
-then
-  AC_MSG_ERROR([gcc|icc required but not found])
-fi
-
-dnl Ensure that compilation tools are compatible with GCC extensions
-if test "$GXX" != "yes" && test "$IXX" != "yes"
-then
-  AC_MSG_ERROR([g++|clang++|icc required but not found])
-fi
-
-dnl Verify that GCC is version 3.0 or higher
-if test "$GCC" = "yes"
-then
-  AC_COMPILE_IFELSE([[#if !defined(__GNUC__) || __GNUC__ < 3
-#error Unsupported GCC version
-#endif
-]], [], [AC_MSG_ERROR([gcc 3.x required, but you have a lower version])])
-fi
-
-dnl Check for GNU Make.  We use its extensions, so don't build without it
-if test -z "$llvm_cv_gnu_make_command"
-then
-  AC_MSG_ERROR([GNU Make required but not found])
-fi
-
-dnl Tool compatibility is okay if we make it here.
-AC_MSG_RESULT([ok])
-
-dnl Check optional compiler flags.
-AC_MSG_CHECKING([optional compiler flags])
-CXX_FLAG_CHECK(NO_VARIADIC_MACROS, [-Wno-variadic-macros])
-CXX_FLAG_CHECK(NO_MISSING_FIELD_INITIALIZERS, [-Wno-missing-field-initializers])
-CXX_FLAG_CHECK(COVERED_SWITCH_DEFAULT, [-Wcovered-switch-default])
-AC_MSG_RESULT([$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS $COVERED_SWITCH_DEFAULT])
-
-dnl===-----------------------------------------------------------------------===
-dnl===
-dnl=== SECTION 5: Check for libraries
-dnl===
-dnl===-----------------------------------------------------------------------===
-
-AC_CHECK_LIB(m,sin)
-if test "$llvm_cv_os_type" = "MingW" ; then
-  AC_CHECK_LIB(imagehlp, main)
-  AC_CHECK_LIB(psapi, main)
-  AC_CHECK_LIB(shell32, main)
-fi
-
-dnl dlopen() is required for plugin support.
-AC_SEARCH_LIBS(dlopen,dl,AC_DEFINE([HAVE_DLOPEN],[1],
-               [Define if dlopen() is available on this platform.]),
-               AC_MSG_WARN([dlopen() not found - disabling plugin support]))
-
-dnl Search for the clock_gettime() function. Note that we rely on the POSIX
-dnl macros to detect whether clock_gettime is available, this just finds the
-dnl right libraries to link with.
-AC_SEARCH_LIBS(clock_gettime,rt)
-
-dnl The curses library is optional; used for querying terminal info
-if test "$llvm_cv_enable_terminfo" = "yes" ; then
-  dnl We need the has_color functionality in curses for it to be useful.
-  AC_SEARCH_LIBS(setupterm,tinfo curses ncurses ncursesw,
-                 AC_DEFINE([HAVE_TERMINFO],[1],
-                           [Define if the setupterm() function is supported this platform.]))
-fi
-
-dnl libffi is optional; used to call external functions from the interpreter
-if test "$llvm_cv_enable_libffi" = "yes" ; then
-  AC_SEARCH_LIBS(ffi_call,ffi,AC_DEFINE([HAVE_FFI_CALL],[1],
-                 [Define if libffi is available on this platform.]),
-                 AC_MSG_ERROR([libffi not found - configure without --enable-libffi to compile without it]))
-fi
-
-dnl mallinfo is optional; the code can compile (minus features) without it
-AC_SEARCH_LIBS(mallinfo,malloc,AC_DEFINE([HAVE_MALLINFO],[1],
-               [Define if mallinfo() is available on this platform.]))
-
-dnl pthread locking functions are optional - but llvm will not be thread-safe
-dnl without locks.
-if test "$ENABLE_THREADS" -eq 1 && test "$ENABLE_PTHREADS" -eq 1 ; then
-  AC_CHECK_LIB(pthread, pthread_mutex_init)
-  AC_SEARCH_LIBS(pthread_mutex_lock,pthread,
-                 AC_DEFINE([HAVE_PTHREAD_MUTEX_LOCK],[1],
-                           [Have pthread_mutex_lock]))
-  AC_SEARCH_LIBS(pthread_rwlock_init,pthread,
-                 AC_DEFINE([HAVE_PTHREAD_RWLOCK_INIT],[1],
-                 [Have pthread_rwlock_init]))
-  AC_SEARCH_LIBS(pthread_getspecific,pthread,
-                 AC_DEFINE([HAVE_PTHREAD_GETSPECIFIC],[1],
-                 [Have pthread_getspecific]))
-fi
-
-dnl zlib is optional; used for compression/uncompression
-if test "$LLVM_ENABLE_ZLIB" -eq 1 ; then
-  AC_CHECK_LIB(z, compress2)
-fi
-
-dnl Allow extra x86-disassembler library
-AC_ARG_WITH(udis86,
-  AS_HELP_STRING([--with-udis86=<path>],
-    [Use udis86 external x86 disassembler library]),
-    [
-      AC_SUBST(USE_UDIS86, [1])
-      case "$withval" in
-        /usr/lib|yes) ;;
-        *) LDFLAGS="$LDFLAGS -L${withval}" ;;
-      esac
-      AC_CHECK_LIB(udis86, ud_init, [], [
-        echo "Error! You need to have libudis86 around."
-        exit -1
-      ])
-    ],
-    AC_SUBST(USE_UDIS86, [0]))
-AC_DEFINE_UNQUOTED([USE_UDIS86],$USE_UDIS86,
-                   [Define if use udis86 library])
-
-dnl Allow OProfile support for JIT output.
-AC_ARG_WITH(oprofile,
-  AS_HELP_STRING([--with-oprofile=<prefix>],
-    [Tell OProfile >= 0.9.4 how to symbolize JIT output]),
-    [
-      AC_SUBST(USE_OPROFILE, [1])
-      case "$withval" in
-        /usr|yes) llvm_cv_oppath=/usr/lib/oprofile ;;
-        no) llvm_cv_oppath=
-            AC_SUBST(USE_OPROFILE, [0]) ;;
-        *) llvm_cv_oppath="${withval}/lib/oprofile"
-           CPPFLAGS="-I${withval}/include";;
-      esac
-      if test -n "$llvm_cv_oppath" ; then
-        LIBS="$LIBS -L${llvm_cv_oppath} -Wl,-rpath,${llvm_cv_oppath}"
-        dnl Work around http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=537744:
-        dnl libbfd is not included properly in libopagent in some Debian
-        dnl versions.  If libbfd isn't found at all, we assume opagent works
-        dnl anyway.
-        AC_SEARCH_LIBS(bfd_init, bfd, [], [])
-        AC_SEARCH_LIBS(op_open_agent, opagent, [], [
-          echo "Error! You need to have libopagent around."
-          exit -1
-        ])
-        AC_CHECK_HEADER([opagent.h], [], [
-          echo "Error! You need to have opagent.h around."
-          exit -1
-          ])
-      fi
-    ],
-    [
-      AC_SUBST(USE_OPROFILE, [0])
-    ])
-AC_DEFINE_UNQUOTED([USE_OPROFILE],$USE_OPROFILE,
-                   [Define if we have the oprofile JIT-support library])
-
-dnl===-----------------------------------------------------------------------===
-dnl===
-dnl=== SECTION 6: Check for header files
-dnl===
-dnl===-----------------------------------------------------------------------===
-
-dnl First, use autoconf provided macros for specific headers that we need
-dnl We don't check for ancient stuff or things that are guaranteed to be there
-dnl by the C++ standard. We always use the <cfoo> versions of <foo.h> C headers.
-dnl Generally we're looking for POSIX headers.
-AC_HEADER_DIRENT
-AC_HEADER_MMAP_ANONYMOUS
-AC_HEADER_STAT
-AC_HEADER_SYS_WAIT
-AC_HEADER_TIME
-
-AC_CHECK_HEADERS([dlfcn.h execinfo.h fcntl.h inttypes.h limits.h link.h])
-AC_CHECK_HEADERS([malloc.h setjmp.h signal.h stdint.h termios.h unistd.h])
-AC_CHECK_HEADERS([utime.h windows.h])
-AC_CHECK_HEADERS([sys/mman.h sys/param.h sys/resource.h sys/time.h sys/uio.h])
-AC_CHECK_HEADERS([sys/types.h sys/ioctl.h malloc/malloc.h mach/mach.h])
-AC_CHECK_HEADERS([valgrind/valgrind.h])
-AC_CHECK_HEADERS([fenv.h])
-if test "$ENABLE_THREADS" -eq 1 && test "$ENABLE_PTHREADS" -eq 1 ; then
-  AC_CHECK_HEADERS(pthread.h,
-                   AC_SUBST(HAVE_PTHREAD, 1),
-                   AC_SUBST(HAVE_PTHREAD, 0))
-else
-  AC_SUBST(HAVE_PTHREAD, 0)
-fi
-if test "$LLVM_ENABLE_ZLIB" -eq 1 ; then
-  AC_CHECK_HEADERS(zlib.h,
-                   AC_SUBST(HAVE_LIBZ, 1),
-                   AC_SUBST(HAVE_LIBZ, 0))
-else
-  AC_SUBST(HAVE_LIBZ, 0)
-fi
-
-dnl Try to find ffi.h.
-if test "$llvm_cv_enable_libffi" = "yes" ; then
-  AC_CHECK_HEADERS([ffi.h ffi/ffi.h])
-fi
-
-dnl Try to find Darwin specific crash reporting libraries.
-AC_CHECK_HEADERS([CrashReporterClient.h])
-
-dnl Try to find Darwin specific crash reporting global.
-AC_MSG_CHECKING([__crashreporter_info__])
-AC_LINK_IFELSE(
-  AC_LANG_SOURCE(
-    [[extern const char *__crashreporter_info__;
-      int main() {
-        __crashreporter_info__ = "test";
-        return 0;
-      }
-    ]]),
-  AC_MSG_RESULT(yes)
-  AC_DEFINE(HAVE_CRASHREPORTER_INFO, 1, Can use __crashreporter_info__),
-  AC_MSG_RESULT(no)
-  AC_DEFINE(HAVE_CRASHREPORTER_INFO, 0,
-            Define if __crashreporter_info__ exists.))
-
-dnl===-----------------------------------------------------------------------===
-dnl===
-dnl=== SECTION 7: Check for types and structures
-dnl===
-dnl===-----------------------------------------------------------------------===
-
-AC_HUGE_VAL_CHECK
-AC_TYPE_PID_T
-AC_TYPE_SIZE_T
-AC_DEFINE_UNQUOTED([RETSIGTYPE],[void],[Define as the return type of signal handlers (`int' or `void').])
-AC_STRUCT_TM
-AC_CHECK_TYPES([int64_t],,AC_MSG_ERROR([Type int64_t required but not found]))
-AC_CHECK_TYPES([uint64_t],,
-         AC_CHECK_TYPES([u_int64_t],,
-         AC_MSG_ERROR([Type uint64_t or u_int64_t required but not found])))
-
-dnl===-----------------------------------------------------------------------===
-dnl===
-dnl=== SECTION 8: Check for specific functions needed
-dnl===
-dnl===-----------------------------------------------------------------------===
-
-AC_CHECK_FUNCS([backtrace ceilf floorf roundf rintf nearbyintf getcwd ])
-AC_CHECK_FUNCS([powf fmodf strtof round ])
-AC_CHECK_FUNCS([getpagesize getrusage getrlimit setrlimit gettimeofday ])
-AC_CHECK_FUNCS([isatty mkdtemp mkstemp ])
-AC_CHECK_FUNCS([mktemp posix_spawn realpath sbrk setrlimit strdup ])
-AC_CHECK_FUNCS([strerror strerror_r setenv ])
-AC_CHECK_FUNCS([strtoll strtoq sysconf malloc_zone_statistics ])
-AC_CHECK_FUNCS([setjmp longjmp sigsetjmp siglongjmp writev])
-AC_C_PRINTF_A
-AC_FUNC_RAND48
-
-dnl Check the declaration "Secure API" on Windows environments.
-AC_CHECK_DECLS([strerror_s])
-
-dnl Check symbols in libgcc.a for JIT on Mingw.
-if test "$llvm_cv_os_type" = "MingW" ; then
-  AC_CHECK_LIB(gcc,_alloca,AC_DEFINE([HAVE__ALLOCA],[1],[Have host's _alloca]))
-  AC_CHECK_LIB(gcc,__alloca,AC_DEFINE([HAVE___ALLOCA],[1],[Have host's __alloca]))
-  AC_CHECK_LIB(gcc,__chkstk,AC_DEFINE([HAVE___CHKSTK],[1],[Have host's __chkstk]))
-  AC_CHECK_LIB(gcc,___chkstk,AC_DEFINE([HAVE____CHKSTK],[1],[Have host's ___chkstk]))
-
-  AC_CHECK_LIB(gcc,__ashldi3,AC_DEFINE([HAVE___ASHLDI3],[1],[Have host's __ashldi3]))
-  AC_CHECK_LIB(gcc,__ashrdi3,AC_DEFINE([HAVE___ASHRDI3],[1],[Have host's __ashrdi3]))
-  AC_CHECK_LIB(gcc,__divdi3,AC_DEFINE([HAVE___DIVDI3],[1],[Have host's __divdi3]))
-  AC_CHECK_LIB(gcc,__fixdfdi,AC_DEFINE([HAVE___FIXDFDI],[1],[Have host's __fixdfdi]))
-  AC_CHECK_LIB(gcc,__fixsfdi,AC_DEFINE([HAVE___FIXSFDI],[1],[Have host's __fixsfdi]))
-  AC_CHECK_LIB(gcc,__floatdidf,AC_DEFINE([HAVE___FLOATDIDF],[1],[Have host's __floatdidf]))
-  AC_CHECK_LIB(gcc,__lshrdi3,AC_DEFINE([HAVE___LSHRDI3],[1],[Have host's __lshrdi3]))
-  AC_CHECK_LIB(gcc,__moddi3,AC_DEFINE([HAVE___MODDI3],[1],[Have host's __moddi3]))
-  AC_CHECK_LIB(gcc,__udivdi3,AC_DEFINE([HAVE___UDIVDI3],[1],[Have host's __udivdi3]))
-  AC_CHECK_LIB(gcc,__umoddi3,AC_DEFINE([HAVE___UMODDI3],[1],[Have host's __umoddi3]))
-
-  AC_CHECK_LIB(gcc,__main,AC_DEFINE([HAVE___MAIN],[1],[Have host's __main]))
-  AC_CHECK_LIB(gcc,__cmpdi2,AC_DEFINE([HAVE___CMPDI2],[1],[Have host's __cmpdi2]))
-fi
-
-dnl Check Win32 API EnumerateLoadedModules.
-if test "$llvm_cv_os_type" = "MingW" ; then
-  AC_MSG_CHECKING([whether EnumerateLoadedModules() accepts new decl])
-  AC_COMPILE_IFELSE([[#include <windows.h>
-#include <imagehlp.h>
-extern void foo(PENUMLOADED_MODULES_CALLBACK);
-extern void foo(BOOL(CALLBACK*)(PCSTR,ULONG_PTR,ULONG,PVOID));]],
-[
-  AC_MSG_RESULT([yes])
-  llvm_cv_win32_elmcb_pcstr="PCSTR"
-],
-[
-  AC_MSG_RESULT([no])
-  llvm_cv_win32_elmcb_pcstr="PSTR"
-])
-  AC_DEFINE_UNQUOTED([WIN32_ELMCB_PCSTR],$llvm_cv_win32_elmcb_pcstr,[Type of 1st arg on ELM Callback])
-fi
-
-dnl Check for variations in the Standard C++ library and STL. These macros are
-dnl provided by LLVM in the autoconf/m4 directory.
-AC_FUNC_ISNAN
-AC_FUNC_ISINF
-
-dnl Check for mmap support.We also need to know if /dev/zero is required to
-dnl be opened for allocating RWX memory.
-dnl Make sure we aren't attempting to configure for an unknown system
-if test "$llvm_cv_platform_type" = "Unix" ; then
-  AC_FUNC_MMAP
-  AC_FUNC_MMAP_FILE
-  AC_NEED_DEV_ZERO_FOR_MMAP
-
-  if test "$ac_cv_func_mmap_fixed_mapped" = "no"
-  then
-    AC_MSG_WARN([mmap() of a fixed address required but not supported])
-  fi
-  if test "$ac_cv_func_mmap_file" = "no"
-  then
-    AC_MSG_WARN([mmap() of files required but not found])
-  fi
-fi
-
-dnl atomic builtins are required for threading support.
-AC_MSG_CHECKING(for GCC atomic builtins)
-dnl Since we'll be using these atomic builtins in C++ files we should test
-dnl the C++ compiler.
-AC_LANG_PUSH([C++])
-AC_LINK_IFELSE(
-  AC_LANG_SOURCE(
-    [[int main() {
-        volatile unsigned long val = 1;
-        __sync_synchronize();
-        __sync_val_compare_and_swap(&val, 1, 0);
-        __sync_add_and_fetch(&val, 1);
-        __sync_sub_and_fetch(&val, 1);
-        return 0;
-      }
-    ]]),
-  AC_LANG_POP([C++])
-  AC_MSG_RESULT(yes)
-  AC_DEFINE(LLVM_HAS_ATOMICS, 1, Has gcc/MSVC atomic intrinsics),
-  AC_MSG_RESULT(no)
-  AC_DEFINE(LLVM_HAS_ATOMICS, 0, Has gcc/MSVC atomic intrinsics)
-  AC_MSG_WARN([LLVM will be built thread-unsafe because atomic builtins are missing]))
-
-dnl===-----------------------------------------------------------------------===
-dnl===
-dnl=== SECTION 9: Additional checks, variables, etc.
-dnl===
-dnl===-----------------------------------------------------------------------===
-
-dnl Handle 32-bit linux systems running a 64-bit kernel.
-dnl This has to come after section 4 because it invokes the compiler.
-if test "$llvm_cv_os_type" = "Linux" -a "$llvm_cv_target_arch" = "x86_64" ; then
-  AC_IS_LINUX_MIXED
-  if test "$llvm_cv_linux_mixed" = "yes"; then
-    llvm_cv_target_arch="x86"
-    ARCH="x86"
-  fi
-fi
-
-dnl Check whether __dso_handle is present
-AC_CHECK_FUNCS([__dso_handle])
-
-dnl Propagate the shared library extension that the libltdl checks did to
-dnl the Makefiles so we can use it there too
-AC_SUBST(SHLIBEXT,$libltdl_cv_shlibext)
-
-# Translate the various configuration directories and other basic
-# information into substitutions that will end up in Makefile.config.in
-# that these configured values can be used by the makefiles
-if test "${prefix}" = "NONE" ; then
-  prefix="/usr/local"
-fi
-eval LLVM_PREFIX="${prefix}";
-eval LLVM_BINDIR="${prefix}/bin";
-eval LLVM_DATADIR="${prefix}/share/llvm";
-eval LLVM_DOCSDIR="${prefix}/share/doc/llvm";
-eval LLVM_ETCDIR="${prefix}/etc/llvm";
-eval LLVM_INCLUDEDIR="${prefix}/include";
-eval LLVM_INFODIR="${prefix}/info";
-eval LLVM_MANDIR="${prefix}/man";
-LLVM_CONFIGTIME=`date`
-AC_SUBST(LLVM_PREFIX)
-AC_SUBST(LLVM_BINDIR)
-AC_SUBST(LLVM_DATADIR)
-AC_SUBST(LLVM_DOCSDIR)
-AC_SUBST(LLVM_ETCDIR)
-AC_SUBST(LLVM_INCLUDEDIR)
-AC_SUBST(LLVM_INFODIR)
-AC_SUBST(LLVM_MANDIR)
-AC_SUBST(LLVM_CONFIGTIME)
-
-# Place the various directores into the config.h file as #defines so that we
-# can know about the installation paths within LLVM.
-AC_DEFINE_UNQUOTED(LLVM_PREFIX,"$LLVM_PREFIX",
-                   [Installation prefix directory])
-AC_DEFINE_UNQUOTED(LLVM_BINDIR, "$LLVM_BINDIR",
-                   [Installation directory for binary executables])
-AC_DEFINE_UNQUOTED(LLVM_DATADIR, "$LLVM_DATADIR",
-                   [Installation directory for data files])
-AC_DEFINE_UNQUOTED(LLVM_DOCSDIR, "$LLVM_DOCSDIR",
-                   [Installation directory for documentation])
-AC_DEFINE_UNQUOTED(LLVM_ETCDIR, "$LLVM_ETCDIR",
-                   [Installation directory for config files])
-AC_DEFINE_UNQUOTED(LLVM_INCLUDEDIR, "$LLVM_INCLUDEDIR",
-                   [Installation directory for include files])
-AC_DEFINE_UNQUOTED(LLVM_INFODIR, "$LLVM_INFODIR",
-                   [Installation directory for .info files])
-AC_DEFINE_UNQUOTED(LLVM_MANDIR, "$LLVM_MANDIR",
-                   [Installation directory for man pages])
-AC_DEFINE_UNQUOTED(LLVM_CONFIGTIME, "$LLVM_CONFIGTIME",
-                   [Time at which LLVM was configured])
-AC_DEFINE_UNQUOTED(LLVM_DEFAULT_TARGET_TRIPLE, "$target",
-                   [Target triple LLVM will generate code for by default])
-
-# Determine which bindings to build.
-if test "$BINDINGS_TO_BUILD" = auto ; then
-  BINDINGS_TO_BUILD=""
-  if test "x$OCAMLC" != x -a "x$OCAMLDEP" != x ; then
-    BINDINGS_TO_BUILD="ocaml $BINDINGS_TO_BUILD"
-  fi
-fi
-AC_SUBST(BINDINGS_TO_BUILD,$BINDINGS_TO_BUILD)
-
-# This isn't really configurey, but it avoids having to repeat the list in
-# other files.
-AC_SUBST(ALL_BINDINGS,ocaml)
-
-# Do any work necessary to ensure that bindings have what they need.
-binding_prereqs_failed=0
-for a_binding in $BINDINGS_TO_BUILD ; do
-  case "$a_binding" in
-  ocaml)
-    if test "x$OCAMLC" = x ; then
-      AC_MSG_WARN([--enable-bindings=ocaml specified, but ocamlc not found. Try configure OCAMLC=/path/to/ocamlc])
-      binding_prereqs_failed=1
-    fi
-    if test "x$OCAMLDEP" = x ; then
-      AC_MSG_WARN([--enable-bindings=ocaml specified, but ocamldep not found. Try configure OCAMLDEP=/path/to/ocamldep])
-      binding_prereqs_failed=1
-    fi
-    if test "x$OCAMLOPT" = x ; then
-      AC_MSG_WARN([--enable-bindings=ocaml specified, but ocamlopt not found. Try configure OCAMLOPT=/path/to/ocamlopt])
-      dnl ocamlopt is optional!
-    fi
-    if test "x$with_ocaml_libdir" != xauto ; then
-      AC_SUBST(OCAML_LIBDIR,$with_ocaml_libdir)
-    else
-      ocaml_stdlib="`"$OCAMLC" -where`"
-      if test "$LLVM_PREFIX" '<' "$ocaml_stdlib" -a "$ocaml_stdlib" '<' "$LLVM_PREFIX~"
-      then
-        # ocaml stdlib is beneath our prefix; use stdlib
-        AC_SUBST(OCAML_LIBDIR,$ocaml_stdlib)
-      else
-        # ocaml stdlib is outside our prefix; use libdir/ocaml
-        AC_SUBST(OCAML_LIBDIR,${prefix}/lib/ocaml)
-      fi
-    fi
-    ;;
-  esac
-done
-if test "$binding_prereqs_failed" = 1 ; then
-  AC_MSG_ERROR([Prequisites for bindings not satisfied. Fix them or use configure --disable-bindings.])
-fi
-
-dnl Determine whether the compiler supports -fvisibility-inlines-hidden.
-AC_CXX_USE_VISIBILITY_INLINES_HIDDEN
-
-dnl Determine linker rpath flag
-if test "$llvm_cv_link_use_r" = "yes" ; then
-  RPATH="-Wl,-R"
-else
-  RPATH="-Wl,-rpath"
-fi
-AC_SUBST(RPATH)
-
-dnl Determine linker rdynamic flag
-if test "$llvm_cv_link_use_export_dynamic" = "yes" ; then
-  RDYNAMIC="-rdynamic"
-else
-  RDYNAMIC=""
-fi
-AC_SUBST(RDYNAMIC)
-
-dnl===-----------------------------------------------------------------------===
-dnl===
-dnl=== SECTION 10: Specify the output files and generate it
-dnl===
-dnl===-----------------------------------------------------------------------===
-
-dnl **************************************************************************
-dnl End LLVM configure.ac Import
-dnl **************************************************************************
-
-dnl Configure a common Makefile
-AC_CONFIG_FILES(Makefile.common)
-AC_CONFIG_FILES(Makefile.llvm.config)
-
-dnl Configure project makefiles
-dnl List every Makefile that exists within your source tree
-AC_CONFIG_MAKEFILE(Makefile)
-AC_CONFIG_MAKEFILE(lib/Makefile)
-AC_CONFIG_MAKEFILE(lib/sample/Makefile)
-AC_CONFIG_MAKEFILE(tools/Makefile)
-AC_CONFIG_MAKEFILE(tools/sample/Makefile)
-
-dnl This must be last
-AC_OUTPUT