GDB 7.6.50

configure.ac

 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
 #   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
 #   Free Software Foundation, Inc.
 #
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful, but
@@ skipping 10 matching lines @@
 
 m4_include(config/acx.m4)
 m4_include(config/override.m4)
 m4_include(config/proginstall.m4)
 m4_include(config/elf.m4)
 m4_include([libtool.m4])
 m4_include([ltoptions.m4])
 m4_include([ltsugar.m4])
 m4_include([ltversion.m4])
 m4_include([lt~obsolete.m4])
+m4_include([config/isl.m4])
 m4_include([config/cloog.m4])
 
 AC_INIT(move-if-change)
 AC_PREREQ(2.64)
 AC_DISABLE_OPTION_CHECKING
 
 progname=$0
 # if PWD already has a value, it is probably wrong.
 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
 
@@ skipping 64 matching lines @@
 fi
 
 topsrcdir=$srcpwd
 
 extra_host_args=
 
 ### To add a new directory to the tree, first choose whether it is a target
 ### or a host dependent tool.  Then put it into the appropriate list
 ### (library or tools, host or target), doing a dependency sort.
 
-# Subdirs will be configured in the order listed in build_configdirs,
+# Subdirs will be configured in the order listed in build_configdirs, 
 # configdirs, or target_configdirs; see the serialization section below.
 
-# Dependency sorting is only needed when *configuration* must be done in
-# a particular order.  In all cases a dependency should be specified in
+# Dependency sorting is only needed when *configuration* must be done in 
+# a particular order.  In all cases a dependency should be specified in 
 # the Makefile, whether or not it's implicitly specified here.
 
 # Double entries in build_configdirs, configdirs, or target_configdirs may
 # cause circular dependencies and break everything horribly.
 
 # these library is used by various programs built for the build
 # environment
 #
 build_libs="build-libiberty"
 
 # these tools are built for the build environment
 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 
 # these libraries are used by various programs built for the host environment
 #
-host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libcpp libdecnumber gmp mpfr mpc ppl cloog libelf libiconv"
+host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl cloog libelf libiconv"
 
 # these tools are built for the host environment
 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 # know that we are building the simulator.
 # binutils, gas and ld appear in that order because it makes sense to run
 # "make check" in that particular order.
 # If --enable-gold is used, "gold" may replace "ld".
 host_tools="flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools"
 
 # libgcj represents the runtime libraries only used by gcj.
 libgcj="target-libffi \
         target-zlib \
         target-libjava"
 
 # these libraries are built for the target environment, and are built after
 # the host libraries and the host tools (which may be a cross compiler)
 # Note that libiberty is not a target library.
 target_libraries="target-libgcc \
+                target-libbacktrace \
                 target-libgloss \
                 target-newlib \
                 target-libgomp \
+                target-libcilkrts \
+                target-libatomic \
                 target-libitm \
                 target-libstdc++-v3 \
-                target-libmudflap \
+                target-libsanitizer \
+                target-libvtv \
                 target-libssp \
                 target-libquadmath \
                 target-libgfortran \
                 target-boehm-gc \
                 ${libgcj} \
                 target-libobjc \
                 target-libada \
                 target-libgo"
 
 # these tools are built using the target libraries, and are intended to
@@ skipping 32 matching lines @@
 
 # This gets set non-empty for some net releases of packages.
 appdirs=""
 
 # Define is_cross_compiler to save on calls to 'test'.
 is_cross_compiler=
 if test x"${host}" = x"${target}" ; then
   is_cross_compiler=no
 else
   is_cross_compiler=yes
-fi
+fi      
 
 # Find the build and target subdir names.
 GCC_TOPLEV_SUBDIRS
 # Be sure to cover against remnants of an in-tree build.
 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 Use a pristine source tree when building in a separate tree])
 fi
 
 # Skipdirs are removed silently.
@@ skipping 15 matching lines @@
   noconfigdirs="$noconfigdirs gas"
 fi
 
 use_included_zlib=
 # Make sure we don't let ZLIB be added if we didn't want it.
 if test x$with_system_zlib = xyes ; then
   use_included_zlib=no
   noconfigdirs="$noconfigdirs zlib"
 fi
 
-# some tools are so dependent upon X11 that if we're not building with X,
+# some tools are so dependent upon X11 that if we're not building with X, 
 # it's not even worth trying to configure, much less build, that tool.
 
 case ${with_x} in
   yes | "") ;; # the default value for this tree is that X11 is available
   no)
     skipdirs="${skipdirs} tk itcl libgui"
     # We won't be able to build gdbtk without X.
-    enable_gdbtk=no
+    enable_gdbtk=no 
     ;;
   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 esac
 
 # Some are only suitable for cross toolchains.
 # Remove these if host=target.
 cross_only="target-libgloss target-newlib target-opcodes"
 
 case $is_cross_compiler in
   no) skipdirs="${skipdirs} ${cross_only}" ;;
@@ skipping 37 matching lines @@
 [AS_HELP_STRING([[--enable-gold[=ARG]]],
                 [build gold @<:@ARG={default,yes,no}@:>@])],
 ENABLE_GOLD=$enableval,
 ENABLE_GOLD=no)
 case "${ENABLE_GOLD}" in
   yes|default)
     # Check for ELF target.
     is_elf=no
     case "${target}" in
       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
-      | *-*-linux* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
+      | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
       | *-*-solaris2* | *-*-nto* | *-*-nacl*)
         case "${target}" in
           *-*-linux*aout* | *-*-linux*oldld*)
             ;;
           *)
             is_elf=yes
             ;;
         esac
     esac
 
     if test "$is_elf" = "yes"; then
       # Check for target supported by gold.
       case "${target}" in
-        i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-*)
+        i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* | tilegx*-*-*)
           configdirs="$configdirs gold"
           if test x${ENABLE_GOLD} = xdefault; then
             default_ld=gold
           fi
           ENABLE_GOLD=yes
           ;;
       esac
     fi
     ;;
   no)
@@ skipping 32 matching lines @@
 
 case "${host}" in
   *-cygwin*)
     configdirs="$configdirs libtermcap" ;;
 esac
 
 # A target can indicate whether a language isn't supported for some reason.
 # Only spaces may be used in this macro; not newlines or tabs.
 unsupported_languages=
 
-# Remove more programs from consideration, based on the host or
+# Remove more programs from consideration, based on the host or 
 # target this usually means that a port of the program doesn't
 # exist yet.
 
 case "${host}" in
   i[[3456789]]86-*-msdosdjgpp*)
     noconfigdirs="$noconfigdirs tcl tk itcl"
     ;;
 esac
 
 
@@ skipping 24 matching lines @@
 ENABLE_LIBADA=yes)
 if test "${ENABLE_LIBADA}" != "yes" ; then
   noconfigdirs="$noconfigdirs gnattools"
 fi
 
 AC_ARG_ENABLE(libssp,
 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 ENABLE_LIBSSP=$enableval,
 ENABLE_LIBSSP=yes)
 
+AC_ARG_ENABLE(libstdcxx,
+AS_HELP_STRING([--disable-libstdcxx],
+  [do not build libstdc++-v3 directory]),
+ENABLE_LIBSTDCXX=$enableval,
+ENABLE_LIBSTDCXX=default)
+[if test "${ENABLE_LIBSTDCXX}" = "no" ; then
+  noconfigdirs="$noconfigdirs libstdc++-v3"
+fi]
+
 # Save it here so that, even in case of --enable-libgcj, if the Java
 # front-end isn't enabled, we still get libgcj disabled.
 libgcj_saved=$libgcj
 case $enable_libgcj in
 yes)
   # If we reset it here, it won't get added to noconfigdirs in the
   # target-specific build rules, so it will be forcibly enabled
   # (unless the Java language itself isn't enabled).
   libgcj=
   ;;
@@ skipping 15 matching lines @@
 enable_static_libjava=
 if test "${ENABLE_STATIC_LIBJAVA}" = "yes" ; then
   enable_static_libjava=yes
 fi
 
 if test x$enable_static_libjava != xyes ; then
   EXTRA_CONFIGARGS_LIBJAVA=--disable-static
 fi
 AC_SUBST(EXTRA_CONFIGARGS_LIBJAVA)
 
-# Disable libmudflap on some systems.
-if test x$enable_libmudflap = x ; then
-    case "${target}" in
-    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | bfin*-*-uclinux* | *-*-kopensolaris*-gnu)
-        # Enable libmudflap by default in GNU and friends.
-        ;;
-    *-*-freebsd*)
-        # Enable libmudflap by default in FreeBSD.
-        ;;
-    *)
-        # Disable it by default everywhere else.
-        noconfigdirs="$noconfigdirs target-libmudflap"
-        ;;
-    esac
-fi
-
 # Disable libgomp on non POSIX hosted systems.
 if test x$enable_libgomp = x ; then
     # Enable libgomp by default on hosted POSIX systems.
     case "${target}" in
     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
         ;;
     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
         ;;
     *-*-solaris2* | *-*-hpux11*)
         ;;
     *-*-darwin* | *-*-aix*)
         ;;
     *)
         noconfigdirs="$noconfigdirs target-libgomp"
         ;;
     esac
 fi
 
+# Disable libatomic on unsupported systems.
+if test -d ${srcdir}/libatomic; then
+    if test x$enable_libatomic = x; then
+        AC_MSG_CHECKING([for libatomic support])
+        if (srcdir=${srcdir}/libatomic; \
+                . ${srcdir}/configure.tgt; \
+                test -n "$UNSUPPORTED")
+        then
+            AC_MSG_RESULT([no])
+            noconfigdirs="$noconfigdirs target-libatomic"
+        else
+            AC_MSG_RESULT([yes])
+        fi
+    fi
+fi
+
+# Disable libcilkrts on unsupported systems.
+if test -d ${srcdir}/libcilkrts; then
+    if test x$enable_libcilkrts = x; then
+        AC_MSG_CHECKING([for libcilkrts support])
+        if (srcdir=${srcdir}/libcilkrts; \
+                . ${srcdir}/configure.tgt; \
+                test -n "$UNSUPPORTED")
+        then
+            AC_MSG_RESULT([no])
+            noconfigdirs="$noconfigdirs target-libcilkrts"
+        else
+            AC_MSG_RESULT([yes])
+        fi
+    fi
+fi
+
 # Disable libitm on unsupported systems.
 if test -d ${srcdir}/libitm; then
     if test x$enable_libitm = x; then
         AC_MSG_CHECKING([for libitm support])
         if (srcdir=${srcdir}/libitm; \
                 . ${srcdir}/configure.tgt; \
                 test -n "$UNSUPPORTED")
         then
             AC_MSG_RESULT([no])
             noconfigdirs="$noconfigdirs target-libitm"
         else
             AC_MSG_RESULT([yes])
         fi
     fi
 fi
 
+# Disable libsanitizer on unsupported systems.
+if test -d ${srcdir}/libsanitizer; then
+    if test x$enable_libsanitizer = x; then
+        AC_MSG_CHECKING([for libsanitizer support])
+        if (srcdir=${srcdir}/libsanitizer; \
+                . ${srcdir}/configure.tgt; \
+                test -n "$UNSUPPORTED")
+        then
+            AC_MSG_RESULT([no])
+            noconfigdirs="$noconfigdirs target-libsanitizer"
+        else
+            AC_MSG_RESULT([yes])
+        fi
+    fi
+fi
+
+# Disable libvtv on unsupported systems.
+if test -d ${srcdir}/libvtv; then
+    if test x$enable_libvtv = x; then
+        AC_MSG_CHECKING([for libvtv support])
+        if (srcdir=${srcdir}/libvtv; \
+                . ${srcdir}/configure.tgt; \
+                test "$VTV_SUPPORTED" != "yes")
+        then
+            AC_MSG_RESULT([no])
+            noconfigdirs="$noconfigdirs target-libvtv"
+        else
+            AC_MSG_RESULT([yes])
+        fi
+    fi
+fi
+
+# Disable libquadmath for some systems.
+case "${target}" in
+  avr-*-*)
+    noconfigdirs="$noconfigdirs target-libquadmath"
+    ;;
+  # libquadmath is unused on AIX and libquadmath build process use of
+  # LD_LIBRARY_PATH can break AIX bootstrap.
+  powerpc-*-aix* | rs6000-*-aix*)
+    noconfigdirs="$noconfigdirs target-libquadmath"
+    ;;
+esac
+
 # Disable libssp for some systems.
 case "${target}" in
   avr-*-*)
     # No hosted I/O support.
     noconfigdirs="$noconfigdirs target-libssp"
     ;;
   powerpc-*-aix* | rs6000-*-aix*)
     noconfigdirs="$noconfigdirs target-libssp"
     ;;
   rl78-*-*)
     # libssp uses a misaligned load to trigger a fault, but the RL78
     # doesn't fault for those - instead, it gives a build-time error
     # for explicit misaligned loads.
     noconfigdirs="$noconfigdirs target-libssp"
     ;;
 esac
 
 # Disable libstdc++-v3 for some systems.
-case "${target}" in
-  *-*-vxworks*)
-    # VxWorks uses the Dinkumware C++ library.
-    noconfigdirs="$noconfigdirs target-libstdc++-v3"
-    ;;
-  arm*-wince-pe*)
-    # the C++ libraries don't build on top of CE's C libraries
-    noconfigdirs="$noconfigdirs target-libstdc++-v3"
-    ;;
-  avr-*-*)
-    noconfigdirs="$noconfigdirs target-libstdc++-v3"
-    ;;
-esac
+# Allow user to override this if they pass --enable-libstdc++-v3
+if test "${ENABLE_LIBSTDCXX}" = "default" ; then
+  case "${target}" in
+    *-*-vxworks*)
+      # VxWorks uses the Dinkumware C++ library.
+      noconfigdirs="$noconfigdirs target-libstdc++-v3"
+      ;;
+    arm*-wince-pe*)
+      # the C++ libraries don't build on top of CE's C libraries
+      noconfigdirs="$noconfigdirs target-libstdc++-v3"
+      ;;
+    avr-*-*)
+      noconfigdirs="$noconfigdirs target-libstdc++-v3"
+      ;;
+  esac
+fi
 
 # Disable Fortran for some systems.
 case "${target}" in
   mmix-*-*)
     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
     unsupported_languages="$unsupported_languages fortran"
     ;;
 esac
 
 # Disable Java if libffi is not supported.
 case "${target}" in
+  aarch64-*-*)
+    ;;
   alpha*-*-*)
     ;;
   arm*-*-*)
     ;;
   cris-*-*)
     ;;
   frv-*-*)
     ;;
   hppa*-*-linux*)
     ;;
@@ skipping 118 matching lines @@
     ;;
   powerpc-*-aix*)
     # copied from rs6000-*-* entry
     noconfigdirs="$noconfigdirs ${libgcj}"
     ;;
   rs6000-*-aix*)
     noconfigdirs="$noconfigdirs ${libgcj}"
     ;;
   *-*-lynxos*)
     noconfigdirs="$noconfigdirs ${libgcj}"
-    ;;
+    ;; 
 esac
 
+# Disable libgo for some systems where it is known to not work.
+# For testing, you can easily override this with --enable-libgo.
+if test x$enable_libgo = x; then
+    case "${target}" in
+    *-*-darwin*)
+        # PR 46986
+        noconfigdirs="$noconfigdirs target-libgo"
+        ;;
+    *-*-cygwin* | *-*-mingw*)
+        noconfigdirs="$noconfigdirs target-libgo"
+        ;;
+    *-*-aix*)
+        noconfigdirs="$noconfigdirs target-libgo"
+        ;;
+    esac
+fi
+
 # Default libgloss CPU subdirectory.
 libgloss_dir="$target_cpu"
 
 case "${target}" in
   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
     libgloss_dir=wince
     ;;
+  aarch64*-*-* )
+    libgloss_dir=aarch64
+    ;;
   arm*-*-*)
     libgloss_dir=arm
     ;;
   cris-*-* | crisv32-*-*)
     libgloss_dir=cris
     ;;
   hppa*-*-*)
     libgloss_dir=pa
     ;;
   i[[3456789]]86-*-*)
@@ skipping 55 matching lines @@
     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
     ;;
   *-*-freebsd*)
     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
     ;;
   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
     ;;
   *-*-lynxos*)
     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
-    ;;
+    ;; 
   *-*-mingw*)
     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
     ;;
   *-*-netbsd*)
     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
     ;;
   *-*-netware*)
     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
     ;;
   *-*-tpf*)
@@ skipping 62 matching lines @@
   alpha*-*-*vms*)
     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
     ;;
   alpha*-*-*)
     # newlib is not 64 bit ready
     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
     ;;
   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
     ;;
-  arc-*-*)
+  arc-*-*|arceb-*-*)
     noconfigdirs="$noconfigdirs target-libgloss"
     ;;
   arm-*-pe*)
     noconfigdirs="$noconfigdirs target-libgloss"
     ;;
   arm-*-riscix*)
     noconfigdirs="$noconfigdirs ld target-libgloss"
     ;;
+  avr-*-rtems*)
+    ;;
+  avr-*-*)
+    if test x${with_avrlibc} != xno; then
+      noconfigdirs="$noconfigdirs target-newlib target-libgloss"
+    fi
+    ;;
   c4x-*-* | tic4x-*-*)
     noconfigdirs="$noconfigdirs target-libgloss"
     ;;
   tic54x-*-*)
     noconfigdirs="$noconfigdirs target-libgloss gdb"
     ;;
-  cr16-*-*)
-    noconfigdirs="$noconfigdirs gdb"
-    ;;
   d10v-*-*)
     noconfigdirs="$noconfigdirs target-libgloss"
     ;;
   d30v-*-*)
     noconfigdirs="$noconfigdirs gdb"
     ;;
   fr30-*-elf*)
     noconfigdirs="$noconfigdirs gdb"
     ;;
   moxie-*-*)
@@ skipping 29 matching lines @@
     ;;
   ia64*-*-elf*)
     # No gdb support yet.
     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
     ;;
   ia64*-**-hpux*)
     # No ld support yet.
     noconfigdirs="$noconfigdirs libgui itcl ld"
     ;;
   ia64*-*-*vms*)
-    noconfigdirs="$noconfigdirs libgui itcl"
+    # No ld support yet.
+    noconfigdirs="$noconfigdirs libgui itcl ld"
     ;;
   i[[3456789]]86-w64-mingw*)
     ;;
   i[[3456789]]86-*-mingw*)
     target_configdirs="$target_configdirs target-winsup"
     ;;
   *-*-cygwin*)
     target_configdirs="$target_configdirs target-libtermcap target-winsup"
     noconfigdirs="$noconfigdirs target-libgloss"
     # always build newlib if winsup directory is present.
@@ skipping 57 matching lines @@
     ;;
   rs6000-*-*)
     noconfigdirs="$noconfigdirs gprof"
     ;;
   m68k-apollo-*)
     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
     ;;
   microblaze*)
     noconfigdirs="$noconfigdirs gprof"
     ;;
-  mips*-sde-elf*)
+  mips*-sde-elf* | mips*-mti-elf*)
     if test x$with_newlib = xyes; then
       noconfigdirs="$noconfigdirs gprof"
     fi
     ;;
   mips*-*-irix5*)
     noconfigdirs="$noconfigdirs gprof target-libgloss"
     ;;
   mips*-*-irix6*)
     noconfigdirs="$noconfigdirs gprof target-libgloss"
     ;;
   mips*-*-bsd*)
-    noconfigdirs="$noconfigdirs gprof target-libgloss"
+    noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
     ;;
   mips*-*-linux*)
     ;;
+  mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
+  | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
+    noconfigdirs="$noconfigdirs ld gas gprof"
+    ;;
   mips*-*-*)
     noconfigdirs="$noconfigdirs gprof"
     ;;
   sh-*-* | sh64-*-*)
     case "${target}" in
       sh*-*-elf)
          ;;
       *)
          noconfigdirs="$noconfigdirs target-libgloss" ;;
     esac
@@ skipping 31 matching lines @@
   i[[3456789]]86-*-msdosdjgpp*)
     host_makefile_frag="config/mh-djgpp"
     ;;
   *-cygwin*)
     ACX_CHECK_CYGWIN_CAT_WORKS
     host_makefile_frag="config/mh-cygwin"
     ;;
   *-mingw*)
     host_makefile_frag="config/mh-mingw"
     ;;
-  *-interix*)
-    host_makefile_frag="config/mh-interix"
-    ;;
   hppa*-hp-hpux10*)
     host_makefile_frag="config/mh-pa-hpux10"
     ;;
   hppa*-hp-hpux*)
     host_makefile_frag="config/mh-pa"
     ;;
-  hppa*-*)
+  hppa*-*)      
     host_makefile_frag="config/mh-pa"
     ;;
   *-*-darwin*)
     host_makefile_frag="config/mh-darwin"
     ;;
   powerpc-*-aix*)
     host_makefile_frag="config/mh-ppc-aix"
     ;;
   rs6000-*-aix*)
     host_makefile_frag="config/mh-ppc-aix"
@@ skipping 46 matching lines @@
       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
     esac
     case $gcc_prog_ld in
     # Accept absolute paths.
     [[\\/]* | [A-Za-z]:[\\/]*)]
       LD="$gcc_prog_ld" ;;
     esac
   fi
 fi
 
+# Check whether -static-libstdc++ -static-libgcc is supported.
+have_static_libs=no
+if test "$GCC" = yes; then
+  saved_LDFLAGS="$LDFLAGS"
+
+  LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
+  AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
+  AC_LANG_PUSH(C++)
+  AC_LINK_IFELSE([
+#if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
+#error -static-libstdc++ not implemented
+#endif
+int main() {}],
+    [AC_MSG_RESULT([yes]); have_static_libs=yes],
+    [AC_MSG_RESULT([no])])
+  AC_LANG_POP(C++)
+
+  LDFLAGS="$saved_LDFLAGS"
+fi
+
 ACX_PROG_GNAT
 ACX_PROG_CMP_IGNORE_INITIAL
 
 AC_ARG_ENABLE([bootstrap],
 [AS_HELP_STRING([--enable-bootstrap],
                 [enable bootstrapping @<:@yes if native build@:>@])],,
 enable_bootstrap=default)
 
 # Issue errors and warnings for invalid/strange bootstrap combinations.
 if test -r $srcdir/gcc/configure; then
@@ skipping 26 matching lines @@
   # No compiler: if they passed --enable-bootstrap explicitly, fail
   no:*:*:yes)
     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
 
   # Fail if wrong command line
   *)
     AC_MSG_ERROR([invalid option for --enable-bootstrap])
     ;;
 esac
 
-# See if we are building gcc with C++.
-AC_ARG_ENABLE(build-with-cxx,
-[AS_HELP_STRING([--enable-build-with-cxx],
-                [build with C++ compiler instead of C compiler])],
-ENABLE_BUILD_WITH_CXX=$enableval,
-ENABLE_BUILD_WITH_CXX=no)
-
-# Build stage1 with C and build stages 2 and 3 with C++.
-AC_ARG_ENABLE(build-poststage1-with-cxx,
-[AS_HELP_STRING([--enable-build-poststage1-with-cxx],
-                [build stages 2 and 3 with C++, not C])],
-ENABLE_BUILD_POSTSTAGE1_WITH_CXX=$enableval,
-ENABLE_BUILD_POSTSTAGE1_WITH_CXX=yes)
-
 # Used for setting $lt_cv_objdir
 _LT_CHECK_OBJDIR
 
 # Check for GMP, MPFR and MPC
 gmplibs="-lmpc -lmpfr -lgmp"
 gmpinc=
 have_gmp=no
 
 # Specify a location for mpc
 # check for this first so it ends up on the link line before mpfr.
@@ skipping 103 matching lines @@
   gmpinc="-I$with_gmp_include $gmpinc"
 fi
 if test "x$with_gmp_lib" != x; then
   gmplibs="-L$with_gmp_lib $gmplibs"
 fi
 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
+  extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
   # Do not test the gmp version.  Assume that it is sufficient, since
   # it is in the source tree, and the library has not been built yet
   # but it would be included on the link line in the version check below
   # hence making the test fail.
   have_gmp=yes
 fi
 
 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
   have_gmp=yes
   saved_CFLAGS="$CFLAGS"
   CFLAGS="$CFLAGS $gmpinc"
   # Check for the recommended and required versions of GMP.
   AC_MSG_CHECKING([for the correct version of gmp.h])
   AC_TRY_COMPILE([#include "gmp.h"],[
   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
-  #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,0)
+  #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
   choke me
   #endif
   ], [AC_TRY_COMPILE([#include <gmp.h>],[
   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
   choke me
   #endif
   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
    [AC_MSG_RESULT([no]); have_gmp=no])
 
   # If we have GMP, check the MPFR version.
   if test x"$have_gmp" = xyes; then
     # Check for the recommended and required versions of MPFR.
     AC_MSG_CHECKING([for the correct version of mpfr.h])
     AC_TRY_COMPILE([#include <gmp.h>
     #include <mpfr.h>],[
-    #if MPFR_VERSION < MPFR_VERSION_NUM(2,3,1)
+    #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
     choke me
     #endif
     ], [AC_TRY_COMPILE([#include <gmp.h>
     #include <mpfr.h>],[
     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
     choke me
     #endif
     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
      [AC_MSG_RESULT([no]); have_gmp=no])
   fi
@@ skipping 39 matching lines @@
     mpc_clear (c);
     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
     LIBS="$saved_LIBS"
   fi
 
   CFLAGS="$saved_CFLAGS"
 
 # The library versions listed in the error message below should match
 # the HARD-minimums enforced above.
   if test x$have_gmp != xyes; then
-    AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.3.1+ and MPC 0.8.0+.
+    AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
 their locations.  Source code for these libraries can be found at
 their respective hosting sites as well as at
 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
 make sure that you have installed both the libraries and the header
 files.  They may be located in separate packages.])
   fi
 fi
 
 # Flags needed for both GMP, MPFR and/or MPC.
 AC_SUBST(gmplibs)
 AC_SUBST(gmpinc)
 AC_SUBST(extra_mpfr_configure_flags)
 AC_SUBST(extra_mpc_gmp_configure_flags)
 AC_SUBST(extra_mpc_mpfr_configure_flags)
+AC_SUBST(extra_isl_gmp_configure_flags)
 
 # Allow host libstdc++ to be specified for static linking with PPL.
 AC_ARG_WITH(host-libstdcxx,
 [AS_HELP_STRING([--with-host-libstdcxx=L],
                 [use linker arguments L to link with libstdc++
                  when linking with PPL])])
 
 case $with_host_libstdcxx in
   no|yes)
     AC_MSG_ERROR([-with-host-libstdcxx needs an argument])
     ;;
 esac
 
-# Linker flags to use for stage1 or when not boostrapping.
-AC_ARG_WITH(stage1-ldflags,
-[AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
-[if test "$withval" = "no" -o "$withval" = "yes"; then
-   stage1_ldflags=
- else
-   stage1_ldflags=$withval
- fi],
-[stage1_ldflags=])
-AC_SUBST(stage1_ldflags)
-
 # Libraries to use for stage1 or when not bootstrapping.
 AC_ARG_WITH(stage1-libs,
 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
 [if test "$withval" = "no" -o "$withval" = "yes"; then
    stage1_libs=
  else
    stage1_libs=$withval
  fi],
 [stage1_libs=$with_host_libstdcxx])
 AC_SUBST(stage1_libs)
 
+# Linker flags to use for stage1 or when not bootstrapping.
+AC_ARG_WITH(stage1-ldflags,
+[AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
+[if test "$withval" = "no" -o "$withval" = "yes"; then
+   stage1_ldflags=
+ else
+   stage1_ldflags=$withval
+ fi],
+[stage1_ldflags=
+ # In stage 1, default to linking libstdc++ and libgcc statically with GCC
+ # if supported.  But if the user explicitly specified the libraries to use,
+ # trust that they are doing what they want.
+ if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
+   stage1_ldflags="-static-libstdc++ -static-libgcc"
+ fi])
+AC_SUBST(stage1_ldflags)
+
 # Libraries to use for stage2 and later builds.  This defaults to the
 # argument passed to --with-host-libstdcxx.
 AC_ARG_WITH(boot-libs,
 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
 [if test "$withval" = "no" -o "$withval" = "yes"; then
    poststage1_libs=
  else
    poststage1_libs=$withval
  fi],
 [poststage1_libs=$with_host_libstdcxx])
@@ skipping 10 matching lines @@
  fi],
 [poststage1_ldflags=
  # In stages 2 and 3, default to linking libstdc++ and libgcc
  # statically.  But if the user explicitly specified the libraries to
  # use, trust that they are doing what they want.
  if test "$poststage1_libs" = ""; then
    poststage1_ldflags="-static-libstdc++ -static-libgcc"
  fi])
 AC_SUBST(poststage1_ldflags)
 
-# Check for PPL
-ppllibs=
-pplinc=
-pwllib=
+# GCC GRAPHITE dependences, ISL and CLOOG which in turn requires ISL.
+# Basic setup is inlined here, actual checks are in config/cloog.m4 and
+# config/isl.m4
 
-AC_ARG_WITH(ppl,
-[AS_HELP_STRING([--with-ppl=PATH],
-                [specify prefix directory for the installed PPL package.
-                 Equivalent to --with-ppl-include=PATH/include
-                 plus --with-ppl-lib=PATH/lib])])
-AC_ARG_WITH(ppl-include,
-[AS_HELP_STRING([--with-ppl-include=PATH],
-                [specify directory for installed PPL include files])])
-AC_ARG_WITH(ppl-lib,
-[AS_HELP_STRING([--with-ppl-lib=PATH],
-                [specify directory for the installed PPL library])])
+AC_ARG_WITH(cloog,
+  [AS_HELP_STRING(
+    [--with-cloog=PATH],
+    [Specify prefix directory for the installed CLooG-ISL package.
+     Equivalent to --with-cloog-include=PATH/include
+     plus --with-cloog-lib=PATH/lib])])
+AC_ARG_WITH(isl,
+  [AS_HELP_STRING(
+   [--with-isl=PATH],
+   [Specify prefix directory for the installed ISL package.
+    Equivalent to --with-isl-include=PATH/include
+    plus --with-isl-lib=PATH/lib])])
 
-AC_ARG_ENABLE(ppl-version-check,
-[AS_HELP_STRING([--disable-ppl-version-check],
-                [disable check for PPL version])])
+# Treat either --without-cloog or --without-isl as a request to disable
+# GRAPHITE support and skip all following checks.
+if test "x$with_isl" != "xno" &&
+   test "x$with_cloog" != "xno"; then
+  # Check for ISL
+  dnl Provide configure switches and initialize islinc & isllibs
+  dnl with user input.
+  ISL_INIT_FLAGS
+  dnl The versions of ISL that work for Graphite
+  ISL_CHECK_VERSION(0,10)
+  if test "${gcc_cv_isl}" = no ; then
+    ISL_CHECK_VERSION(0,11)
+    if test "${gcc_cv_isl}" = no ; then
+      ISL_CHECK_VERSION(0,12)
+    fi
+  fi
+  dnl Only execute fail-action, if ISL has been requested.
+  ISL_IF_FAILED([
+    AC_MSG_ERROR([Unable to find a usable ISL.  See config.log for details.])])
 
-case $with_ppl in
-  yes | no | "")
-    ;;
-  *)
-    ppllibs="-L$with_ppl/lib"
-    pplinc="-I$with_ppl/include $pplinc"
-    if test -d "$with_ppl/lib" && test -d "$with_ppl/include"; then
-      with_ppl=yes
-    else
-      AC_MSG_ERROR([cannot find directories "$with_ppl/lib" or "$with_ppl/include"])
+  if test "x$gcc_cv_isl" != "xno"; then
+    # Check for CLOOG
+    dnl Provide configure switches and initialize clooginc & clooglibs
+    dnl with user input.
+    CLOOG_INIT_FLAGS
+    dnl The versions of CLooG that work for Graphite.
+    CLOOG_CHECK_VERSION(0,17,0)
+    if test "${gcc_cv_cloog}" = no ; then
+      CLOOG_CHECK_VERSION(0,18,0)
     fi
-    ;;
-esac
 
-if test x"$with_ppl_include" != x; then
-  pplinc="-I$with_ppl_include $pplinc"
-  with_ppl=yes
-fi
-
-if test "x$with_ppl_lib" != x; then
-  ppllibs="-L$with_ppl_lib"
-  with_ppl=yes
-fi
-
-if test x"$with_ppl$with_ppl_include$with_ppl_lib" = x && test -d ${srcdir}/ppl; then
-  if test x"$enable_watchdog" = xyes; then
-    pwllib="-lpwl"
-  fi
-  ppllibs='-L$$r/$(HOST_SUBDIR)/ppl/interfaces/C/'"$lt_cv_objdir"' -L$$r/$(HOST_SUBDIR)/ppl/src/'"$lt_cv_objdir"
-  pplinc='-I$$r/$(HOST_SUBDIR)/ppl/src -I$$r/$(HOST_SUBDIR)/ppl/interfaces/C '
-  enable_ppl_version_check=no
-  with_ppl=yes
-fi
-
-if test "x$with_ppl" != xno; then
-  if test "x$pwllib" = x; then
-    saved_LIBS="$LIBS"
-    LIBS="$LIBS $ppllibs -lstdc++ -lm"
-    AC_CHECK_LIB(pwl, PWL_handle_timeout, [pwllib="-lpwl"])
-    LIBS="$saved_LIBS"
-  fi
-
-  ppllibs="$ppllibs -lppl_c -lppl $pwllib -lgmpxx"
-
-  if test "$enable_ppl_version_check" != no; then
-    saved_CFLAGS="$CFLAGS"
-    CFLAGS="$CFLAGS $pplinc $gmpinc"
-    AC_MSG_CHECKING([for version 0.11 (revision 0 or later) of PPL])
-    AC_TRY_COMPILE([#include "ppl_c.h"],[
-    #if PPL_VERSION_MAJOR != 0 || PPL_VERSION_MINOR < 11
-    choke me
-    #endif
-    ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); ppllibs= ; pplinc= ; with_ppl=no ])
-    CFLAGS="$saved_CFLAGS"
+    dnl Only execute fail-action, if CLooG has been requested.
+    CLOOG_IF_FAILED([
+      AC_MSG_ERROR([Unable to find a usable CLooG.  See config.log for details.])])
   fi
 fi
 
-# Flags needed for PPL
-AC_SUBST(ppllibs)
-AC_SUBST(pplinc)
+# If either the ISL or the CLooG check failed, disable builds of in-tree
+# variants of both
+if test "x$with_isl" = xno ||
+   test "x$with_cloog" = xno ||
+   test "x$gcc_cv_cloog" = xno ||
+   test "x$gcc_cv_isl" = xno; then
+  noconfigdirs="$noconfigdirs cloog isl"
+  islinc=
+  clooginc=
+  clooglibs=
+fi
 
+AC_SUBST(islinc)
+AC_SUBST(clooglibs)
+AC_SUBST(clooginc)
 
-# Check for CLOOG
-
-dnl Provide configure switches and initialize clooginc & clooglibs
-dnl with user input.
-CLOOG_INIT_FLAGS
-if test "x$with_ppl" = "xno"; then
-  dnl Only execute fail-action, if CLooG has been requested.
-  CLOOG_REQUESTED([graphite_requested=yes], [graphite_requested=no])
-  if test "${graphite_requested}" = yes; then
-    AC_MSG_ERROR([Unable to find a usable PPL.  See config.log for details.])
-  fi
-  with_cloog=no
-fi
-if test "x${with_cloog}" = x && test "x${with_cloog_include}" = x \
-  && test "x${with_cloog_lib}" = x && test -d ${srcdir}/cloog; then
-  clooglibs='-L$$r/$(HOST_SUBDIR)/cloog/'"$lt_cv_objdir"' '
-  clooginc='-I$$r/$(HOST_SUBDIR)/cloog/include -I$$s/cloog/include '
-fi
-if test "x$with_cloog" != "xno"; then
-  dnl The minimal version of CLooG required for Graphite.
-  dnl
-  dnl If we use CLooG-Legacy, the provided version information is
-  dnl ignored.
-  CLOOG_CHECK_VERSION(0,16,1)
-
-  dnl Only execute fail-action, if CLooG has been requested.
-  CLOOG_IF_FAILED([
-    AC_MSG_ERROR([Unable to find a usable CLooG.  See config.log for details.])])
-fi
 
 # Check for LTO support.
 AC_ARG_ENABLE(lto,
 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
 enable_lto=$enableval,
 enable_lto=yes; default_enable_lto=yes)
 
 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
   build_lto_plugin=yes
 ],[if test x"$default_enable_lto" = x"yes" ; then
@@ skipping 18 matching lines @@
   fi
   # Among non-ELF, only Windows platforms support the lto-plugin so far.
   # Build it unless LTO was explicitly disabled.
   case $target in
     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
     *) ;;
   esac
 ])
 
 
-# By default, C is the only stage 1 language.
+# By default, C and C++ are the only stage 1 languages.
 stage1_languages=,c,
 
 # Target libraries that we bootstrap.
 bootstrap_target_libs=,target-libgcc,
 
 # Figure out what language subdirectories are present.
 # Look if the user specified --enable-languages="..."; if not, use
 # the environment variable $LANGUAGES if defined. $LANGUAGES might
 # go away some day.
 # NB:  embedded tabs in this IF block -- do not untabify
@@ skipping 17 matching lines @@
 
   # 'f95' is the old name for the 'fortran' language. We issue a warning
   # and make the substitution.
   case ,${enable_languages}, in
     *,f95,*)
       echo configure.in: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
       ;;
   esac
 
-  # If bootstrapping, then using --enable-build-with-cxx or
-  # --enable-build-poststage1-with-cxx requires enabling C++.
-  case ",$enable_languages,:,$ENABLE_BUILD_WITH_CXX,$ENABLE_BUILD_POSTSTAGE1_WITH_CXX,:$enable_bootstrap" in
-    *,c++,*:*:*) ;;
-    *:*,yes,*:yes)
+  # If bootstrapping, C++ must be enabled.
+  case ",$enable_languages,:$enable_bootstrap" in
+    *,c++,*:*) ;;
+    *:yes)
       if test -f ${srcdir}/gcc/cp/config-lang.in; then
         enable_languages="${enable_languages},c++"
       else
-        AC_MSG_ERROR([bootstrapping with --enable-build-with-cxx or --enable-build-poststage1-with-cxx requires c++ sources])
+        AC_MSG_ERROR([bootstrapping requires c++ sources])
       fi
       ;;
   esac
 
   # First scan to see if an enabled language requires some other language.
   # We assume that a given config-lang.in will list all the language
   # front ends it requires, even if some are required indirectly.
   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
     case ${lang_frag} in
       ..) ;;
@@ skipping 59 matching lines @@
   enabled_target_libs=
   disabled_target_libs=
 
   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
     case ${lang_frag} in
       ..) ;;
       # The odd quoting in the next line works around
       # an apparent bug in bash 1.12 on linux.
       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
       *)
-        # From the config-lang.in, get $language, $target_libs,
+        # From the config-lang.in, get $language, $target_libs, 
         # $lang_dirs, $boot_language, and $build_by_default
         language=
         target_libs=
         lang_dirs=
         subdir_requires=
         boot_language=no
         build_by_default=yes
         . ${lang_frag}
         if test x${language} = x; then
           echo "${lang_frag} doesn't set \$language." 1>&2
           exit 1
         fi
 
         if test "$language" = "c++"; then
-          if test "$ENABLE_BUILD_WITH_CXX" = "yes" \
-             || test "$ENABLE_BUILD_POSTSTAGE1_WITH_CXX" = "yes"; then
-            boot_language=yes
-          fi
+          boot_language=yes
         fi
 
+        add_this_lang=no
         case ,${enable_languages}, in
           *,${language},*)
-            # Language was explicitly selected; include it.
-            add_this_lang=yes
+            # Language was explicitly selected; include it
+            # unless it is C, which is enabled by default.
+            if test "$language" != "c"; then
+              add_this_lang=yes
+            fi
             ;;
           *,all,*)
             # 'all' was selected, select it if it is a default language
-            add_this_lang=${build_by_default}
-            ;;
-          *)
-            add_this_lang=no
+            if test "$language" != "c"; then
+              add_this_lang=${build_by_default}
+            fi
             ;;
         esac
 
         # Disable languages that need other directories if these aren't available.
         for i in $subdir_requires; do
           test -f "$srcdir/gcc/$i/config-lang.in" && continue
           case ,${enable_languages}, in
             *,${language},*)
               # Specifically requested language; tell them.
               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
@@ skipping 148 matching lines @@
     # Keep target-boehm-gc if requested for Objective-C.
     ;;
   *)
     # Otherwise remove target-boehm-gc depending on target-libjava.
     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
       noconfigdirs="$noconfigdirs target-boehm-gc"
     fi
     ;;
 esac
 
+# Disable libitm, libsanitizer, libvtv if we're not building C++
+case ,${enable_languages}, in
+  *,c++,*) ;;
+  *)
+    noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer target-libvtv"
+    ;;
+esac
+
 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
 # $build_configdirs and $target_configdirs.
 # If we have the source for $noconfigdirs entries, add them to $notsupp.
 
 notsupp=""
 for dir in . $skipdirs $noconfigdirs ; do
   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
     if test -r $srcdir/$dirname/configure ; then
@@ skipping 25 matching lines @@
     fi
   fi
 done
 
 # Quietly strip out all directories which aren't configurable in this tree.
 # This relies on all configurable subdirectories being autoconfiscated, which
 # is now the case.
 build_configdirs_all="$build_configdirs"
 build_configdirs=
 for i in ${build_configdirs_all} ; do
-  j=`echo $i | sed -e s/build-//g`
+  j=`echo $i | sed -e s/build-//g` 
   if test -f ${srcdir}/$j/configure ; then
     build_configdirs="${build_configdirs} $i"
   fi
 done
 
 configdirs_all="$configdirs"
 configdirs=
 for i in ${configdirs_all} ; do
   if test -f ${srcdir}/$i/configure ; then
     configdirs="${configdirs} $i"
   fi
 done
 
 target_configdirs_all="$target_configdirs"
 target_configdirs=
 for i in ${target_configdirs_all} ; do
-  j=`echo $i | sed -e s/target-//g`
+  j=`echo $i | sed -e s/target-//g` 
   if test -f ${srcdir}/$j/configure ; then
     target_configdirs="${target_configdirs} $i"
   fi
 done
 
 # Produce a warning message for the subdirs we can't configure.
 # This isn't especially interesting in the Cygnus tree, but in the individual
 # FSF releases, it's important to let people know when their machine isn't
 # supported by the one or two programs in a package.
 
@@ skipping 30 matching lines @@
 case "$host" in
   *msdosdjgpp*)
     enable_gdbtk=no ;;
 esac
 
 # To find our prefix, in gcc_cv_tool_prefix.
 ACX_TOOL_DIRS
 
 copy_dirs=
 
-AC_ARG_WITH([build-sysroot],
+AC_ARG_WITH([build-sysroot], 
   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
                   [use sysroot as the system root during the build])],
   [if test x"$withval" != x ; then
      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
    fi],
   [SYSROOT_CFLAGS_FOR_TARGET=])
 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
 
 AC_ARG_WITH([debug-prefix-map],
   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
@@ skipping 70 matching lines @@
       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
     done
   fi
 fi
 
 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
 #
 # This is done by determining whether or not the appropriate directory
 # is available, and by checking whether or not specific configurations
 # have requested that this magic not happen.
-#
-# The command line options always override the explicit settings in
+# 
+# The command line options always override the explicit settings in 
 # configure.in, and the settings in configure.in override this magic.
 #
-# If the default for a toolchain is to use GNU as and ld, and you don't
+# If the default for a toolchain is to use GNU as and ld, and you don't 
 # want to do that, then you should use the --without-gnu-as and
 # --without-gnu-ld options for the configure script.  Similarly, if
 # the default is to use the included zlib and you don't want to do that,
 # you should use the --with-system-zlib option for the configure script.
 
 if test x${use_gnu_as} = x &&
    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
   with_gnu_as=yes
   extra_host_args="$extra_host_args --with-gnu-as"
 fi
@@ skipping 67 matching lines @@
 esac
 
 extra_arflags_for_target=
 extra_nmflags_for_target=
 extra_ranlibflags_for_target=
 target_makefile_frag=/dev/null
 case "${target}" in
   spu-*-*)
     target_makefile_frag="config/mt-spu"
     ;;
-  mips*-sde-elf*)
+  mips*-sde-elf* | mips*-mti-elf*)
     target_makefile_frag="config/mt-sde"
     ;;
   mipsisa*-*-elfoabi*)
     target_makefile_frag="config/mt-mips-elfoabi"
     ;;
   mips*-*-*linux* | mips*-*-gnu*)
     target_makefile_frag="config/mt-mips-gnu"
     ;;
   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
     target_makefile_frag="config/mt-gnu"
     ;;
   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
-    # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
+    # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm 
     # commands to handle both 32-bit and 64-bit objects.  These flags are
     # harmless if we're using GNU nm or ar.
     extra_arflags_for_target=" -X32_64"
     extra_nmflags_for_target=" -B -X32_64"
     ;;
-  *-*-darwin[[3-9]]*)
-    # ranlib before Darwin10 requires the -c flag to look at common symbols.
-    extra_ranlibflags_for_target=" -c"
-    ;;
 esac
 
 alphaieee_frag=/dev/null
 case $target in
   alpha*-*-*)
     # This just makes sure to use the -mieee option to build target libs.
     # This should probably be set individually by each library.
     alphaieee_frag="config/mt-alphaieee"
     ;;
 esac
@@ skipping 44 matching lines @@
 # can't, we are probably in trouble.  We don't care whether we can run the
 # executable--we might be using a cross compiler--we only care whether it
 # can be created.  At this point the main configure script has set CC.
 we_are_ok=no
 echo "int main () { return 0; }" > conftest.c
 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
 if test $? = 0 ; then
   if test -s conftest || test -s conftest.exe ; then
     we_are_ok=yes
   fi
-fi
+fi 
 case $we_are_ok in
   no)
     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
     rm -f conftest*
     exit 1
     ;;
 esac
 rm -f conftest*
 
@@ skipping 17 matching lines @@
 # Record target_configdirs and the configure arguments for target and
 # build configuration in Makefile.
 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
 
 # If we are building libgomp, bootstrap it.
 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
 fi
 
+# If we are building libsanitizer, bootstrap it.
+if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1 ; then
+  bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
+fi
+
+# If we are building libvtv, bootstrap it.
+if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 ; then
+  bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
+fi
+
 # Determine whether gdb needs tk/tcl or not.
 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
 # and in that case we want gdb to be built without tk.  Ugh!
 # In fact I believe gdb is the *only* package directly dependent on tk,
 # so we should be able to put the 'maybe's in unconditionally and
 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
 # 100% sure that that's safe though.
 
 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
 case "$enable_gdbtk" in
@@ skipping 243 matching lines @@
     *[-_]lib)
       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
       ;;
     *)
       lib=$libopt
       ;;
     esac
 changequote([,])
 
     case $lib in
-    mpc | mpfr | gmp | ppl | cloog)
+    mpc | mpfr | gmp | cloog)
       # If we're processing --with-$lib, --with-$lib-include or
       # --with-$lib-lib, for one of the libs above, and target is
       # different from host, don't pass the current argument to any
       # target library's configure.
       if test x$is_cross_compiler = xyes; then
         skip_targ=yes
       fi
       ;;
     esac
     ;;
@@ skipping 48 matching lines @@
   esac
 done
 # Remove the initial space we just introduced and, as these will be
 # expanded by make, quote '$'.
 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
 
 # Add in --program-transform-name, after --program-prefix and
 # --program-suffix have been applied to it.  Autoconf has already
 # doubled dollar signs and backslashes in program_transform_name; we want
 # the backslashes un-doubled, and then the entire thing wrapped in single
-# quotes, because this will be expanded first by make and then by the shell.
+# quotes, because this will be expanded first by make and then by the shell. 
 # Also, because we want to override the logic in subdir configure scripts to
 # choose program_transform_name, replace any s,x,x, with s,y,y,.
 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
 ${program_transform_name}
 EOF_SED
 gcc_transform_name=`cat conftestsed.out`
 rm -f conftestsed.out
 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
 if test "$silent" = yes; then
@@ skipping 66 matching lines @@
 # for target_alias and gcc doesn't manage it consistently.
 target_configargs="--cache-file=./config.cache ${target_configargs}"
 
 FLAGS_FOR_TARGET=
 case " $target_configdirs " in
  *" newlib "*)
   case " $target_configargs " in
   *" --with-newlib "*)
    case "$target" in
     *-cygwin*)
-      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/include -isystem $$s/winsup/cygwin/include -isystem $$s/winsup/w32api/include'
+      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
       ;;
    esac
 
    # If we're not building GCC, don't discard standard headers.
    if test -d ${srcdir}/gcc; then
      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
 
      if test "${build}" != "${host}"; then
        # On Canadian crosses, CC_FOR_TARGET will have already been set
        # by `configure', so we won't have an opportunity to add -Bgcc/
@@ skipping 217 matching lines @@
 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
 AC_SUBST(CC)
 AC_SUBST(CXX)
 AC_SUBST(CFLAGS)
 AC_SUBST(CXXFLAGS)
 
 # Target tools.
-AC_ARG_WITH([build-time-tools],
+AC_ARG_WITH([build-time-tools], 
   [AS_HELP_STRING([--with-build-time-tools=PATH],
                   [use given path to find target tools during the build])],
   [case x"$withval" in
      x/*) ;;
      *)
        with_build_time_tools=
        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
        ;;
    esac],
   [with_build_time_tools=])
@@ skipping 18 matching lines @@
 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
 
 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
 
 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
-                [gcc/g++ -B$$r/$(HOST_SUBDIR)/gcc/ -nostdinc++ `if test -f $$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags; then $(SHELL) $$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags --build-includes; else echo -funconfigured-libstdc++-v3 ; fi` -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs],
+                [gcc/xg++ -B$$r/$(HOST_SUBDIR)/gcc/ -nostdinc++ `if test -f $$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags; then $(SHELL) $$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags --build-includes; else echo -funconfigured-libstdc++-v3 ; fi` -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
                 c++)
 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
-                [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs],
+                [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
                 c++)
 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
@@ skipping 42 matching lines @@
       USE_MAINTAINER_MODE=no)
 AC_MSG_RESULT($USE_MAINTAINER_MODE)
 AC_SUBST(MAINTAINER_MODE_TRUE)
 AC_SUBST(MAINTAINER_MODE_FALSE)
 if test "$USE_MAINTAINER_MODE" = yes; then
   MAINTAINER_MODE_TRUE=
   MAINTAINER_MODE_FALSE='#'
 else
   MAINTAINER_MODE_TRUE='#'
   MAINTAINER_MODE_FALSE=
-fi
+fi      
 MAINT=$MAINTAINER_MODE_TRUE
 AC_SUBST(MAINT)dnl
 
 # ---------------------
 # GCC bootstrap support
 # ---------------------
 
 # Stage specific cflags for build.
 stage1_cflags="-g"
 case $build in
   vax-*-*)
     case ${GCC} in
       yes) stage1_cflags="-g -Wa,-J" ;;
       *) stage1_cflags="-g -J" ;;
     esac ;;
 esac
 
-# This is aimed to mimic bootstrap with a non-GCC compiler to catch problems.
-if test "$GCC" = yes -a "$ENABLE_BUILD_WITH_CXX" != yes; then
-  saved_CFLAGS="$CFLAGS"
-
-  # Pass -fkeep-inline-functions for stage 1 if the GCC version supports it.
-  CFLAGS="$CFLAGS -fkeep-inline-functions"
-  AC_MSG_CHECKING([whether -fkeep-inline-functions is supported])
-  AC_TRY_COMPILE([
-#if (__GNUC__ < 3) \
-    || (__GNUC__ == 3 && (__GNUC_MINOR__ < 3 \
-                          || (__GNUC_MINOR__ == 3 && __GNUC_PATCHLEVEL__ < 1)))
-#error http://gcc.gnu.org/PR29382
-#endif
-    ],,
-    [AC_MSG_RESULT([yes]); stage1_cflags="$stage1_cflags -fkeep-inline-functions"],
-    [AC_MSG_RESULT([no])])
-
-  CFLAGS="$saved_CFLAGS"
-fi
-
 AC_SUBST(stage1_cflags)
 
 # Enable --enable-checking in stage1 of the compiler.
 AC_ARG_ENABLE(stage1-checking,
 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
                 [choose additional checking for stage1 of the compiler])],
 [stage1_checking=--enable-checking=${enable_stage1_checking}],
 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
   stage1_checking=--enable-checking=yes,types
 else
   stage1_checking=--enable-checking=$enable_checking,types
 fi])
 AC_SUBST(stage1_checking)
 
 # Enable -Werror in bootstrap stage2 and later.
 AC_ARG_ENABLE(werror,
 [AS_HELP_STRING([--enable-werror],
                 [enable -Werror in bootstrap stage2 and later])], [],
 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
   enable_werror=yes
 else
   enable_werror=no
 fi])
 case ${enable_werror} in
   yes) stage2_werror_flag="--enable-werror-always" ;;
   *) stage2_werror_flag="" ;;
 esac
 AC_SUBST(stage2_werror_flag)
 
-# If using ENABLE_BUILD_POSTSTAGE1_WITH_CXX, pass
-# --enable-build-with-cxx after stage1.
-if test "$ENABLE_BUILD_POSTSTAGE1_WITH_CXX" = "yes"; then
-  POSTSTAGE1_CONFIGURE_FLAGS=--enable-build-with-cxx
-else
-  POSTSTAGE1_CONFIGURE_FLAGS=
-fi
-AC_SUBST(POSTSTAGE1_CONFIGURE_FLAGS)
+# Enable --enable-host-shared.
+AC_ARG_ENABLE(host-shared,
+[AS_HELP_STRING([--enable-host-shared],
+                [build host code as shared libraries])],
+[host_shared=$enableval], [host_shared=no])
+AC_SUBST(host_shared)
 
 # Specify what files to not compare during bootstrap.
 
 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
 case "$target" in
   hppa*64*-*-hpux*) ;;
   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
-esac
-case " $configdirs " in
-*" ppl "*) compare_exclusions="$compare_exclusions | ppl/src/ppl-config.o" ;;
+  powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
 esac
 AC_SUBST(compare_exclusions)
 
 AC_CONFIG_FILES([Makefile],
   [sed "$extrasub_build" Makefile |
    sed "$extrasub_host" |
    sed "$extrasub_target" > mf$$
    mv -f mf$$ Makefile],
   [extrasub_build="$extrasub_build"
    extrasub_host="$extrasub_host"
    extrasub_target="$extrasub_target"])
 AC_OUTPUT