configure

case "$enableval" in
  yes) ENABLE_SHARED=1
 ;;
  no)  ENABLE_SHARED=0
 ;;
  default) ENABLE_SHARED=0
 ;;
  *) { { echo "$as_me:$LINENO: error: Invalid setting for --enable-shared. Use \"yes\" or \"no\"" >&5
echo "$as_me: error: Invalid setting for --enable-shared. Use \"yes\" or \"no\"" >&2;}
   { (exit 1); exit 1; }; } ;;
esac

# Check whether --enable-embed-stdcxx was given.
if test "${enable_embed_stdcxx+set}" = set; then
  enableval=$enable_embed_stdcxx;
else
  enableval=default
fi

case "$enableval" in
  yes) ENABLE_EMBED_STDCXX=1
 ;;
  no)  ENABLE_EMBED_STDCXX=0
 ;;
  default) ENABLE_EMBED_STDCXX=1
 ;;
  *) { { echo "$as_me:$LINENO: error: Invalid setting for --enable-embed-stdcxx. Use \"yes\" or \"no\"" >&5
echo "$as_me: error: Invalid setting for --enable-embed-stdcxx. Use \"yes\" or \"no\"" >&2;}
   { (exit 1); exit 1; }; } ;;
esac

# Check whether --enable-timestamps was given.
if test "${enable_timestamps+set}" = set; then
  enableval=$enable_timestamps;
else
  enableval=default
fi

case "$enableval" in
  yes) ENABLE_TIMESTAMPS=1
 ;;
  no)  ENABLE_TIMESTAMPS=0
 ;;
  default) ENABLE_TIMESTAMPS=1
 ;;
  *) { { echo "$as_me:$LINENO: error: Invalid setting for --enable-timestamps. Use \"yes\" or \"no\"" >&5
echo "$as_me: error: Invalid setting for --enable-timestamps. Use \"yes\" or \"no\"" >&2;}
   { (exit 1); exit 1; }; } ;;
esac

cat >>confdefs.h <<_ACEOF
#define ENABLE_TIMESTAMPS $ENABLE_TIMESTAMPS
_ACEOF


TARGETS_TO_BUILD=""
# Check whether --enable-targets was given.
if test "${enable_targets+set}" = set; then
  enableval=$enable_targets;
else
  enableval=all
fi

if test "$enableval" = host-only ; then
  enableval=host
fi
case "$enableval" in
  all) TARGETS_TO_BUILD="X86 Sparc PowerPC Alpha ARM Mips CellSPU XCore MSP430 SystemZ Blackfin CBackend CppBackend MBlaze PTX" ;;
  *)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" ;;
        alpha)    TARGETS_TO_BUILD="Alpha $TARGETS_TO_BUILD" ;;
        arm)      TARGETS_TO_BUILD="ARM $TARGETS_TO_BUILD" ;;
        mips)     TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
        spu)      TARGETS_TO_BUILD="CellSPU $TARGETS_TO_BUILD" ;;
        xcore)    TARGETS_TO_BUILD="XCore $TARGETS_TO_BUILD" ;;
        msp430)   TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
        systemz)  TARGETS_TO_BUILD="SystemZ $TARGETS_TO_BUILD" ;;
        blackfin) TARGETS_TO_BUILD="Blackfin $TARGETS_TO_BUILD" ;;
        cbe)      TARGETS_TO_BUILD="CBackend $TARGETS_TO_BUILD" ;;
        cpp)      TARGETS_TO_BUILD="CppBackend $TARGETS_TO_BUILD" ;;
        mblaze)   TARGETS_TO_BUILD="MBlaze $TARGETS_TO_BUILD" ;;
        ptx)      TARGETS_TO_BUILD="PTX $TARGETS_TO_BUILD" ;;
        host) case "$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" ;;
            Alpha)       TARGETS_TO_BUILD="Alpha $TARGETS_TO_BUILD" ;;
            ARM)         TARGETS_TO_BUILD="ARM $TARGETS_TO_BUILD" ;;
            Mips)        TARGETS_TO_BUILD="Mips $TARGETS_TO_BUILD" ;;
            MBlaze)      TARGETS_TO_BUILD="MBlaze $TARGETS_TO_BUILD" ;;
            CellSPU|SPU) TARGETS_TO_BUILD="CellSPU $TARGETS_TO_BUILD" ;;
            XCore)       TARGETS_TO_BUILD="XCore $TARGETS_TO_BUILD" ;;
            MSP430)      TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
            s390x)       TARGETS_TO_BUILD="SystemZ $TARGETS_TO_BUILD" ;;
            Blackfin)    TARGETS_TO_BUILD="Blackfin $TARGETS_TO_BUILD" ;;
            PTX)         TARGETS_TO_BUILD="PTX $TARGETS_TO_BUILD" ;;
            *)       { { echo "$as_me:$LINENO: error: Can not set target to build" >&5
echo "$as_me: error: Can not set target to build" >&2;}
   { (exit 1); exit 1; }; } ;;
          esac ;;
        *) { { echo "$as_me:$LINENO: error: Unrecognized target $a_target" >&5
echo "$as_me: error: Unrecognized target $a_target" >&2;}
   { (exit 1); exit 1; }; } ;;
      esac
  done
  ;;
esac
TARGETS_TO_BUILD=$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

cat >>confdefs.h <<_ACEOF
#define LLVM_NATIVE_ARCH $LLVM_NATIVE_ARCH
_ACEOF

    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

cat >>confdefs.h <<_ACEOF
#define LLVM_NATIVE_TARGET $LLVM_NATIVE_TARGET
_ACEOF


cat >>confdefs.h <<_ACEOF
#define LLVM_NATIVE_TARGETINFO $LLVM_NATIVE_TARGETINFO
_ACEOF


cat >>confdefs.h <<_ACEOF
#define LLVM_NATIVE_TARGETMC $LLVM_NATIVE_TARGETMC
_ACEOF


cat >>confdefs.h <<_ACEOF
#define LLVM_NATIVE_ASMPRINTER $LLVM_NATIVE_ASMPRINTER
_ACEOF

    if test -f ${srcdir}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/Makefile ; then

cat >>confdefs.h <<_ACEOF
#define LLVM_NATIVE_ASMPARSER $LLVM_NATIVE_ASMPARSER
_ACEOF

    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





# Check whether --enable-cbe-printf-a was given.
if test "${enable_cbe_printf_a+set}" = set; then
  enableval=$enable_cbe_printf_a;
else
  enableval=default
fi

case "$enableval" in
  yes) ENABLE_CBE_PRINTF_A=1
 ;;
  no)  ENABLE_CBE_PRINTF_A=0
 ;;
  default)  ENABLE_CBE_PRINTF_A=1
 ;;
  *) { { echo "$as_me:$LINENO: error: Invalid setting for --enable-cbe-printf-a. Use \"yes\" or \"no\"" >&5
echo "$as_me: error: Invalid setting for --enable-cbe-printf-a. Use \"yes\" or \"no\"" >&2;}
   { (exit 1); exit 1; }; } ;;
esac

cat >>confdefs.h <<_ACEOF
#define ENABLE_CBE_PRINTF_A $ENABLE_CBE_PRINTF_A
_ACEOF



# Check whether --with-llvmgccdir was given.
if test "${with_llvmgccdir+set}" = set; then
  withval=$with_llvmgccdir;
else
  withval=default
fi

case "$withval" in
  default) WITH_LLVMGCCDIR=default ;;
  /* | [A-Za-z]:[\\/]*)      WITH_LLVMGCCDIR=$withval ;;
  *) { { echo "$as_me:$LINENO: error: Invalid path for --with-llvmgccdir. Provide full path" >&5
echo "$as_me: error: Invalid path for --with-llvmgccdir. Provide full path" >&2;}
   { (exit 1); exit 1; }; } ;;
esac


# Check whether --with-llvmgcc was given.
if test "${with_llvmgcc+set}" = set; then
  withval=$with_llvmgcc; LLVMGCC=$with_llvmgcc
      WITH_LLVMGCCDIR=""
fi



# Check whether --with-llvmgxx was given.
if test "${with_llvmgxx+set}" = set; then
  withval=$with_llvmgxx; LLVMGXX=$with_llvmgxx
    WITH_LLVMGCCDIR=""
fi


if test -n "$LLVMGCC"; then
   LLVMGCCCOMMAND="$LLVMGCC"
fi

if test -n "$LLVMGXX"; then
   LLVMGXXCOMMAND="$LLVMGXX"
fi

if test -n "$LLVMGCC" && test -z "$LLVMGXX"; then
   { { echo "$as_me:$LINENO: error: Invalid llvm-g++. Use --with-llvmgxx when --with-llvmgcc is used" >&5
echo "$as_me: error: Invalid llvm-g++. Use --with-llvmgxx when --with-llvmgcc is used" >&2;}
   { (exit 1); exit 1; }; };
fi

if test -n "$LLVMGXX" && test -z "$LLVMGCC"; then
   { { echo "$as_me:$LINENO: error: Invalid llvm-gcc. Use --with-llvmgcc when --with-llvmgxx is used" >&5
echo "$as_me: error: Invalid llvm-gcc. Use --with-llvmgcc when --with-llvmgxx is used" >&2;}
   { (exit 1); exit 1; }; };
fi


# Check whether --with-clang was given.
if test "${with_clang+set}" = set; then
  withval=$with_clang;
else
  with_clang=default
fi



# Check whether --with-built-clang was given.
if test "${with_built_clang+set}" = set; then
  withval=$with_built_clang;
else
  with_built_clang=check
fi


{ echo "$as_me:$LINENO: checking clang compiler" >&5
echo $ECHO_N "checking clang compiler... $ECHO_C" >&6; }
WITH_CLANGPATH=""
WITH_BUILT_CLANG=0
if test "$with_clang" != "default"; then
   WITH_CLANGPATH="$with_clang"
   if ! test -x "$WITH_CLANGPATH"; then
     { { echo "$as_me:$LINENO: error: invalid --with-clang, path does not specify an executable" >&5
echo "$as_me: error: invalid --with-clang, path does not specify an executable" >&2;}
   { (exit 1); exit 1; }; }
   fi
elif test "$with_built_clang" = "yes"; then
   WITH_BUILT_CLANG=1
elif test "$with_built_clang" = "no"; then
   WITH_BUILT_CLANG=0
else
   if test "$with_built_clang" != "check"; then
      { { echo "$as_me:$LINENO: error: invalid value for --with-built-clang." >&5
echo "$as_me: error: invalid value for --with-built-clang." >&2;}
   { (exit 1); exit 1; }; }
   fi

   if test -f ${srcdir}/tools/clang/README.txt; then
     WITH_BUILT_CLANG=1
   fi
fi

if ! test -z "$WITH_CLANGPATH"; then
   { echo "$as_me:$LINENO: result: $WITH_CLANGPATH" >&5
echo "${ECHO_T}$WITH_CLANGPATH" >&6; }
   WITH_CLANGXXPATH=`"$WITH_CLANGPATH" --print-prog-name=clang++`
elif test "$WITH_BUILT_CLANG" = "1"; then
   { echo "$as_me:$LINENO: result: built" >&5
echo "${ECHO_T}built" >&6; }
else
   { echo "$as_me:$LINENO: result: none" >&5
echo "${ECHO_T}none" >&6; }
fi
CLANGPATH=$WITH_CLANGPATH

CLANGXXPATH=$WITH_CLANGXXPATH

ENABLE_BUILT_CLANG=$WITH_BUILT_CLANG



# Check whether --with-optimize-option was given.
if test "${with_optimize_option+set}" = set; then
  withval=$with_optimize_option;
else
  withval=default
fi

{ echo "$as_me:$LINENO: checking optimization flags" >&5
echo $ECHO_N "checking optimization flags... $ECHO_C" >&6; }
case "$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
OPTIMIZE_OPTION=$optimize_option

{ echo "$as_me:$LINENO: result: $optimize_option" >&5
echo "${ECHO_T}$optimize_option" >&6; }


# Check whether --with-extra-options was given.
if test "${with_extra_options+set}" = set; then
  withval=$with_extra_options;
else
  withval=default
fi

case "$withval" in
  default) EXTRA_OPTIONS= ;;
  *) EXTRA_OPTIONS=$withval ;;
esac
EXTRA_OPTIONS=$EXTRA_OPTIONS



# Check whether --with-extra-ld-options was given.
if test "${with_extra_ld_options+set}" = set; then
  withval=$with_extra_ld_options;
else
  withval=default
fi

case "$withval" in
  default) EXTRA_LD_OPTIONS= ;;
  *) EXTRA_LD_OPTIONS=$withval ;;
esac
EXTRA_LD_OPTIONS=$EXTRA_LD_OPTIONS


# Check whether --enable-bindings was given.
if test "${enable_bindings+set}" = set; then
  enableval=$enable_bindings;
else
  enableval=default
fi

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 $BINDINGS_TO_BUILD" ;;
        *) { { echo "$as_me:$LINENO: error: Unrecognized binding $a_binding" >&5
echo "$as_me: error: Unrecognized binding $a_binding" >&2;}
   { (exit 1); exit 1; }; } ;;
      esac
  done
  ;;
esac


# Check whether --with-ocaml-libdir was given.
if test "${with_ocaml_libdir+set}" = set; then
  withval=$with_ocaml_libdir;
else
  withval=auto
fi

case "$withval" in
  auto) with_ocaml_libdir="$withval" ;;
  /* | [A-Za-z]:[\\/]*) with_ocaml_libdir="$withval" ;;
  *) { { echo "$as_me:$LINENO: error: Invalid path for --with-ocaml-libdir. Provide full path" >&5
echo "$as_me: error: Invalid path for --with-ocaml-libdir. Provide full path" >&2;}
   { (exit 1); exit 1; }; } ;;
esac


# Check whether --with-clang-resource-dir was given.
if test "${with_clang_resource_dir+set}" = set; then
  withval=$with_clang_resource_dir;
else
  withval=""
fi


cat >>confdefs.h <<_ACEOF
#define CLANG_RESOURCE_DIR "$withval"
_ACEOF



# Check whether --with-c-include-dirs was given.
if test "${with_c_include_dirs+set}" = set; then
  withval=$with_c_include_dirs;
else
  withval=""
fi


cat >>confdefs.h <<_ACEOF
#define C_INCLUDE_DIRS "$withval"
_ACEOF



# Check whether --with-cxx-include-root was given.
if test "${with_cxx_include_root+set}" = set; then
  withval=$with_cxx_include_root;
else
  withval=""
fi


cat >>confdefs.h <<_ACEOF
#define CXX_INCLUDE_ROOT "$withval"
_ACEOF



# Check whether --with-cxx-include-arch was given.
if test "${with_cxx_include_arch+set}" = set; then
  withval=$with_cxx_include_arch;
else
  withval=""
fi


cat >>confdefs.h <<_ACEOF
#define CXX_INCLUDE_ARCH "$withval"
_ACEOF



# Check whether --with-cxx-include-32bit-dir was given.
if test "${with_cxx_include_32bit_dir+set}" = set; then
  withval=$with_cxx_include_32bit_dir;
else
  withval=""
fi


cat >>confdefs.h <<_ACEOF
#define CXX_INCLUDE_32BIT_DIR "$withval"
_ACEOF



# Check whether --with-cxx-include-64bit-dir was given.
if test "${with_cxx_include_64bit_dir+set}" = set; then
  withval=$with_cxx_include_64bit_dir;
else
  withval=""
fi


cat >>confdefs.h <<_ACEOF
#define CXX_INCLUDE_64BIT_DIR "$withval"
_ACEOF



# Check whether --with-binutils-include was given.
if test "${with_binutils_include+set}" = set; then
  withval=$with_binutils_include;
else
  withval=default
fi

case "$withval" in
  default) WITH_BINUTILS_INCDIR=default ;;
  /* | [A-Za-z]:[\\/]*)      WITH_BINUTILS_INCDIR=$withval ;;
  *) { { echo "$as_me:$LINENO: error: Invalid path for --with-binutils-include. Provide full path" >&5
echo "$as_me: error: Invalid path for --with-binutils-include. Provide full path" >&2;}
   { (exit 1); exit 1; }; } ;;
esac
if test "x$WITH_BINUTILS_INCDIR" != xdefault ; then
  BINUTILS_INCDIR=$WITH_BINUTILS_INCDIR

  if test ! -f "$WITH_BINUTILS_INCDIR/plugin-api.h"; then
     echo "$WITH_BINUTILS_INCDIR/plugin-api.h"
     { { echo "$as_me:$LINENO: error: Invalid path to directory containing plugin-api.h." >&5
echo "$as_me: error: Invalid path to directory containing plugin-api.h." >&2;}
   { (exit 1); exit 1; }; };
  fi
fi


# Check whether --with-bug-report-url was given.
if test "${with_bug_report_url+set}" = set; then
  withval=$with_bug_report_url;
else
  withval="http://llvm.org/bugs/"
fi


cat >>confdefs.h <<_ACEOF
#define BUG_REPORT_URL "$withval"
_ACEOF


# Check whether --enable-libffi was given.
if test "${enable_libffi+set}" = set; then
  enableval=$enable_libffi; case "$enableval" in
    yes) llvm_cv_enable_libffi="yes" ;;
    no)  llvm_cv_enable_libffi="no"  ;;
    *) { { echo "$as_me:$LINENO: error: Invalid setting for --enable-libffi. Use \"yes\" or \"no\"" >&5
echo "$as_me: error: Invalid setting for --enable-libffi. Use \"yes\" or \"no\"" >&2;}
   { (exit 1); exit 1; }; } ;;
  esac
else
  llvm_cv_enable_libffi=no
fi



ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu
{ echo "$as_me:$LINENO: checking how to run the C preprocessor" >&5
echo $ECHO_N "checking how to run the C preprocessor... $ECHO_C" >&6; }
# On Suns, sometimes $CPP names a directory.
if test -n "$CPP" && test -d "$CPP"; then
  CPP=
fi
if test -z "$CPP"; then
  if test "${ac_cv_prog_CPP+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
      # Double quotes because CPP needs to be expanded
    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
    do
      ac_preproc_ok=false
for ac_c_preproc_warn_flag in '' yes
do
  # Use a header file that comes with gcc, so configuring glibc
  # with a fresh cross-compiler works.
  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
  # <limits.h> exists even on freestanding compilers.
  # On the NeXT, cc -E runs the code through the compiler's parser,
  # not just through cpp. "Syntax error" is here to catch this case.
  cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#ifdef __STDC__
# include <limits.h>
#else
# include <assert.h>
#endif
		     Syntax error
_ACEOF
if { (ac_try="$ac_cpp conftest.$ac_ext"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } >/dev/null; then
  if test -s conftest.err; then
    ac_cpp_err=$ac_c_preproc_warn_flag
    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
  else
    ac_cpp_err=
  fi
else
  ac_cpp_err=yes
fi
if test -z "$ac_cpp_err"; then
  :
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

  # Broken: fails on valid input.
continue
fi

rm -f conftest.err conftest.$ac_ext

  # OK, works on sane cases.  Now check whether nonexistent headers
  # can be detected and how.
  cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <ac_nonexistent.h>
_ACEOF
if { (ac_try="$ac_cpp conftest.$ac_ext"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } >/dev/null; then
  if test -s conftest.err; then
    ac_cpp_err=$ac_c_preproc_warn_flag
    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
  else
    ac_cpp_err=
  fi
else
  ac_cpp_err=yes
fi
if test -z "$ac_cpp_err"; then
  # Broken: success on invalid input.
continue
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

  # Passes both tests.
ac_preproc_ok=:
break
fi

rm -f conftest.err conftest.$ac_ext

done
# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
rm -f conftest.err conftest.$ac_ext
if $ac_preproc_ok; then
  break
fi

    done
    ac_cv_prog_CPP=$CPP

fi
  CPP=$ac_cv_prog_CPP
else
  ac_cv_prog_CPP=$CPP
fi
{ echo "$as_me:$LINENO: result: $CPP" >&5
echo "${ECHO_T}$CPP" >&6; }
ac_preproc_ok=false
for ac_c_preproc_warn_flag in '' yes
do
  # Use a header file that comes with gcc, so configuring glibc
  # with a fresh cross-compiler works.
  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
  # <limits.h> exists even on freestanding compilers.
  # On the NeXT, cc -E runs the code through the compiler's parser,
  # not just through cpp. "Syntax error" is here to catch this case.
  cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#ifdef __STDC__
# include <limits.h>
#else
# include <assert.h>
#endif
		     Syntax error
_ACEOF
if { (ac_try="$ac_cpp conftest.$ac_ext"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } >/dev/null; then
  if test -s conftest.err; then
    ac_cpp_err=$ac_c_preproc_warn_flag
    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
  else
    ac_cpp_err=
  fi
else
  ac_cpp_err=yes
fi
if test -z "$ac_cpp_err"; then
  :
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

  # Broken: fails on valid input.
continue
fi

rm -f conftest.err conftest.$ac_ext

  # OK, works on sane cases.  Now check whether nonexistent headers
  # can be detected and how.
  cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <ac_nonexistent.h>
_ACEOF
if { (ac_try="$ac_cpp conftest.$ac_ext"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } >/dev/null; then
  if test -s conftest.err; then
    ac_cpp_err=$ac_c_preproc_warn_flag
    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
  else
    ac_cpp_err=
  fi
else
  ac_cpp_err=yes
fi
if test -z "$ac_cpp_err"; then
  # Broken: success on invalid input.
continue
else
  echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

  # Passes both tests.
ac_preproc_ok=:
break
fi

rm -f conftest.err conftest.$ac_ext

done
# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
rm -f conftest.err conftest.$ac_ext
if $ac_preproc_ok; then
  :
else
  { { echo "$as_me:$LINENO: error: C preprocessor \"$CPP\" fails sanity check
See \`config.log' for more details." >&5
echo "$as_me: error: C preprocessor \"$CPP\" fails sanity check
See \`config.log' for more details." >&2;}
   { (exit 1); exit 1; }; }
fi

ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu

ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu
if test -n "$ac_tool_prefix"; then
  for ac_prog in clang llvm-gcc gcc
  do
    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
set dummy $ac_tool_prefix$ac_prog; ac_word=$2
{ echo "$as_me:$LINENO: checking for $ac_word" >&5
echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
if test "${ac_cv_prog_CC+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  if test -n "$CC"; then
  ac_cv_prog_CC="$CC" # Let the user override the test.
else
as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH
do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
  for ac_exec_ext in '' $ac_executable_extensions; do
  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
  fi
done
done
IFS=$as_save_IFS

fi
fi
CC=$ac_cv_prog_CC
if test -n "$CC"; then
  { echo "$as_me:$LINENO: result: $CC" >&5
echo "${ECHO_T}$CC" >&6; }
else
  { echo "$as_me:$LINENO: result: no" >&5
echo "${ECHO_T}no" >&6; }
fi


    test -n "$CC" && break
  done
fi
if test -z "$CC"; then
  ac_ct_CC=$CC
  for ac_prog in clang llvm-gcc gcc
do
  # Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2
{ echo "$as_me:$LINENO: checking for $ac_word" >&5
echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  if test -n "$ac_ct_CC"; then
  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
else
as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH
do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
  for ac_exec_ext in '' $ac_executable_extensions; do
  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_CC="$ac_prog"
    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
  fi
done
done
IFS=$as_save_IFS

fi
fi
ac_ct_CC=$ac_cv_prog_ac_ct_CC
if test -n "$ac_ct_CC"; then
  { echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
echo "${ECHO_T}$ac_ct_CC" >&6; }
else
  { echo "$as_me:$LINENO: result: no" >&5
echo "${ECHO_T}no" >&6; }
fi


  test -n "$ac_ct_CC" && break
done

  if test "x$ac_ct_CC" = x; then
    CC=""
  else
    case $cross_compiling:$ac_tool_warned in
yes:)
{ echo "$as_me:$LINENO: WARNING: In the future, Autoconf will not detect cross-tools
whose name does not start with the host triplet.  If you think this
configuration is useful to you, please write to autoconf@gnu.org." >&5
echo "$as_me: WARNING: In the future, Autoconf will not detect cross-tools
whose name does not start with the host triplet.  If you think this
configuration is useful to you, please write to autoconf@gnu.org." >&2;}
ac_tool_warned=yes ;;
esac
    CC=$ac_ct_CC
  fi
fi


test -z "$CC" && { { echo "$as_me:$LINENO: error: no acceptable C compiler found in \$PATH
See \`config.log' for more details." >&5
echo "$as_me: error: no acceptable C compiler found in \$PATH
See \`config.log' for more details." >&2;}
   { (exit 1); exit 1; }; }

# Provide some information about the compiler.
echo "$as_me:$LINENO: checking for C compiler version" >&5
ac_compiler=`set X $ac_compile; echo $2`
{ (ac_try="$ac_compiler --version >&5"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
  (eval "$ac_compiler --version >&5") 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }
{ (ac_try="$ac_compiler -v >&5"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
  (eval "$ac_compiler -v >&5") 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }
{ (ac_try="$ac_compiler -V >&5"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
  (eval "$ac_compiler -V >&5") 2>&5
  ac_status=$?
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); }

{ echo "$as_me:$LINENO: checking whether we are using the GNU C compiler" >&5
echo $ECHO_N "checking whether we are using the GNU C compiler... $ECHO_C" >&6; }
if test "${ac_cv_c_compiler_gnu+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */

int
main ()
{
#ifndef __GNUC__
       choke me
#endif

  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (ac_try="$ac_compile"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
  (eval "$ac_compile") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } &&