Update top-level files from GCC trunk

	* Makefile.def: Updated from GCC trunk.
	* Makefile.tpl: Likewise.
	* configure.ac: Likewise.
	* Makefile.in: Regenerated.
	* configure: Likewise.

1 files changed, 289 insertions, 398 deletions

diff --git a/configure b/configure
index 5caf82b08c..9e543196ea 100755
--- a/configure
+++ b/configure
@@ -643,11 +643,12 @@ CXXFLAGS_FOR_TARGET
 CFLAGS_FOR_TARGET
 DEBUG_PREFIX_CFLAGS_FOR_TARGET
 SYSROOT_CFLAGS_FOR_TARGET
-stage1_languages
 extra_host_libiberty_configure_flags
-clooginc
-clooglibs
+stage1_languages
+extra_linker_plugin_flags
+extra_linker_plugin_configure_flags
 islinc
+isllibs
 poststage1_ldflags
 poststage1_libs
 stage1_ldflags
@@ -672,6 +673,7 @@ LDFLAGS
 CFLAGS
 CC
 EXTRA_CONFIGARGS_LIBJAVA
+extra_liboffloadmic_configure_flags
 target_subdir
 host_subdir
 build_subdir
@@ -745,6 +747,8 @@ ospace_frag'
 ac_user_opts='
 enable_option_checking
 with_build_libsubdir
+enable_as_accelerator_for
+enable_offload_targets
 enable_gold
 enable_ld
 enable_libquadmath
@@ -752,6 +756,7 @@ enable_libquadmath_support
 enable_libada
 enable_libssp
 enable_libstdcxx
+enable_liboffloadmic
 enable_static_libjava
 enable_bootstrap
 with_mpc
@@ -770,15 +775,13 @@ with_stage1_libs
 with_stage1_ldflags
 with_boot_libs
 with_boot_ldflags
-with_cloog
 with_isl
 with_isl_include
 with_isl_lib
 enable_isl_version_check
-with_cloog_include
-with_cloog_lib
-enable_cloog_version_check
 enable_lto
+enable_linker_plugin_configure_flags
+enable_linker_plugin_flags
 enable_stage1_languages
 enable_objc_gc
 with_build_sysroot
@@ -1463,6 +1466,13 @@ Optional Features:
   --disable-option-checking  ignore unrecognized --enable/--with options
   --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
   --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --enable-as-accelerator-for=ARG
+                          build as offload target compiler. Specify offload
+                          host triple by ARG
+  --enable-offload-targets=LIST
+                          enable offloading to devices from comma-separated
+                          LIST of TARGET[=DIR]. Use optional path to find
+                          offload target compiler during the build
   --enable-gold[=ARG]     build gold [ARG={default,yes,no}]
   --enable-ld[=ARG]       build ld [ARG={default,yes,no}]
   --disable-libquadmath   do not build libquadmath directory
@@ -1471,14 +1481,20 @@ Optional Features:
   --enable-libada         build libada directory
   --enable-libssp         build libssp directory
   --disable-libstdcxx     do not build libstdc++-v3 directory
+  --enable-liboffloadmic=ARG
+                          build liboffloadmic [ARG={no,host,target}]
   --enable-static-libjava[=ARG]
                           build static libjava [default=no]
   --enable-bootstrap      enable bootstrapping [yes if native build]
   --disable-isl-version-check
                           disable check for ISL version
-  --disable-cloog-version-check
-                          disable check for CLooG version
   --enable-lto            enable link time optimization support
+  --enable-linker-plugin-configure-flags=FLAGS
+                          additional flags for configuring linker plugins
+                          [none]
+  --enable-linker-plugin-flags=FLAGS
+                          additional flags for configuring and building linker
+                          plugins [none]
   --enable-stage1-languages[=all]
                           choose additional languages to build during stage1.
                           Mostly useful for compiler development
@@ -1529,20 +1545,12 @@ Optional Packages:
   --with-boot-libs=LIBS   libraries for stage2 and later
   --with-boot-ldflags=FLAGS
                           linker flags for stage2 and later
-  --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
   --with-isl=PATH         Specify prefix directory for the installed ISL
                           package. Equivalent to
                           --with-isl-include=PATH/include plus
                           --with-isl-lib=PATH/lib
   --with-isl-include=PATH Specify directory for installed ISL include files
   --with-isl-lib=PATH     Specify the directory for the installed ISL library
-  --with-cloog-include=PATH
-                          Specify directory for installed CLooG include files
-  --with-cloog-lib=PATH   Specify the directory for the installed CLooG
-                          library
   --with-build-sysroot=SYSROOT
                           use sysroot as the system root during the build
   --with-debug-prefix-map='A=B C=D ...'
@@ -1867,48 +1875,6 @@ fi
   return $ac_retval
 
 } # ac_fn_c_try_link
-
-# ac_fn_c_try_run LINENO
-# ----------------------
-# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
-# that executables *can* be run.
-ac_fn_c_try_run ()
-{
-  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  if { { ac_try="$ac_link"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
-  (eval "$ac_link") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
-  { { case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
-$as_echo "$ac_try_echo"; } >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; }; then :
-  ac_retval=0
-else
-  $as_echo "$as_me: program exited with status $ac_status" >&5
-       $as_echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-       ac_retval=$ac_status
-fi
-  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
-  return $ac_retval
-
-} # ac_fn_c_try_run
 cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
@@ -2748,14 +2714,14 @@ extra_host_args=
 # these library is used by various programs built for the build
 # environment
 #
-build_libs="build-libiberty"
+build_libs="build-libiberty build-libcpp"
 
 # 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 libbacktrace libcpp libdecnumber gmp mpfr mpc isl cloog libelf libiconv"
+#f
+host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl libelf libiconv"
 
 # these tools are built for the host environment
 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
@@ -2763,7 +2729,7 @@ host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktr
 # 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="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools"
+host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
 
 # libgcj represents the runtime libraries only used by gcj.
 libgcj="target-libffi \
@@ -2779,11 +2745,13 @@ target_libraries="target-libgcc \
 		target-newlib \
 		target-libgomp \
 		target-libcilkrts \
+		target-liboffloadmic \
 		target-libatomic \
 		target-libitm \
 		target-libstdc++-v3 \
 		target-libsanitizer \
 		target-libvtv \
+		target-libmpx \
 		target-libssp \
 		target-libquadmath \
 		target-libgfortran \
@@ -2928,6 +2896,24 @@ case ${with_newlib} in
   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 esac
 
+# Check whether --enable-as-accelerator-for was given.
+if test "${enable_as_accelerator_for+set}" = set; then :
+  enableval=$enable_as_accelerator_for;
+fi
+
+
+# Check whether --enable-offload-targets was given.
+if test "${enable_offload_targets+set}" = set; then :
+  enableval=$enable_offload_targets;
+  if test x"$enable_offload_targets" = x; then
+    as_fn_error "no offload targets specified" "$LINENO" 5
+  fi
+
+else
+  enable_offload_targets=
+fi
+
+
 # Handle --enable-gold, --enable-ld.
 # --disable-gold [--enable-ld]
 #     Build only ld.  Default option.
@@ -3095,9 +3081,47 @@ else
 fi
 
 if test "${ENABLE_LIBSTDCXX}" = "no" ; then
-  noconfigdirs="$noconfigdirs libstdc++-v3"
+  noconfigdirs="$noconfigdirs target-libstdc++-v3"
+fi
+
+# If this is accelerator compiler and its target is intelmic we enable
+# target liboffloadmic by default.  If this is compiler with offloading
+# for intelmic we enable host liboffloadmic by default.  Otherwise
+# liboffloadmic is disabled by default.
+# Check whether --enable-liboffloadmic was given.
+if test "${enable_liboffloadmic+set}" = set; then :
+  enableval=$enable_liboffloadmic; case "$enableval" in
+  no | host | target)
+    enable_liboffloadmic=$enableval ;;
+  *)
+    as_fn_error "--enable-liboffloadmic=no/host/target" "$LINENO" 5 ;;
+esac
+else
+  if test x"$enable_as_accelerator_for" != x; then
+  case "${target}" in
+    *-intelmic-* | *-intelmicemul-*)
+      enable_liboffloadmic=target
+      extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
+      ;;
+    *)
+      enable_liboffloadmic=no
+      ;;
+  esac
+else
+  case "${enable_offload_targets}" in
+    *-intelmic-* | *-intelmicemul-*)
+      enable_liboffloadmic=host
+      extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
+      ;;
+    *)
+      enable_liboffloadmic=no
+      ;;
+    esac
+fi
 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
@@ -3191,6 +3215,25 @@ $as_echo "yes" >&6; }
     fi
 fi
 
+# Disable liboffloadmic on unsupported systems.
+if test -d ${srcdir}/liboffloadmic; then
+    if test x$enable_liboffloadmic != xno; then
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for liboffloadmic support" >&5
+$as_echo_n "checking for liboffloadmic support... " >&6; }
+	if (srcdir=${srcdir}/liboffloadmic; \
+		. ${srcdir}/configure.tgt; \
+		test -n "$UNSUPPORTED")
+	then
+	    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+	    noconfigdirs="$noconfigdirs target-liboffloadmic"
+	else
+	    { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+	fi
+    fi
+fi
+
 # Disable libitm on unsupported systems.
 if test -d ${srcdir}/libitm; then
     if test x$enable_libitm = x; then
@@ -3248,6 +3291,30 @@ $as_echo "yes" >&6; }
     fi
 fi
 
+
+# Enable libmpx on supported systems by request.
+if test -d ${srcdir}/libmpx; then
+    if test x$enable_libmpx = xyes; then
+       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for libmpx support" >&5
+$as_echo_n "checking for libmpx support... " >&6; }
+       if (srcdir=${srcdir}/libmpx; \
+               . ${srcdir}/configure.tgt; \
+               test "$LIBMPX_SUPPORTED" != "yes")
+       then
+           { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+           noconfigdirs="$noconfigdirs target-libmpx"
+       else
+           { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+       fi
+    else
+       noconfigdirs="$noconfigdirs target-libmpx"
+    fi
+fi
+
+
+
 # Disable libquadmath for some systems.
 case "${target}" in
   avr-*-*)
@@ -3275,6 +3342,10 @@ case "${target}" in
     # for explicit misaligned loads.
     noconfigdirs="$noconfigdirs target-libssp"
     ;;
+  visium-*-*)
+    # No hosted I/O support.
+    noconfigdirs="$noconfigdirs target-libssp"
+    ;;
 esac
 
 # Disable libstdc++-v3 for some systems.
@@ -3387,6 +3458,9 @@ case "${target}" in
   alpha*-*-*vms*)
     noconfigdirs="$noconfigdirs ${libgcj}"
     ;;
+  arm*-*-freebsd*)
+    noconfigdirs="$noconfigdirs ${libgcj}"
+    ;;
   arm-wince-pe)
     noconfigdirs="$noconfigdirs ${libgcj}"
     ;;
@@ -3451,6 +3525,14 @@ case "${target}" in
     ;;
 esac
 
+# Disable the go frontend on systems where it is known to not work. Please keep
+# this in sync with contrib/config-list.mk.
+case "${target}" in
+*-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
+    unsupported_languages="$unsupported_languages go"
+    ;;
+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$enable_libgo = x; then
@@ -3819,6 +3901,10 @@ case "${target}" in
   nds32*-*-*)
     noconfigdirs="$noconfigdirs gdb"
     ;;
+  nvptx*-*-*)
+    # nvptx is just a compiler
+    noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
+    ;;
   or1k*-*-*)
     noconfigdirs="$noconfigdirs gdb"
     ;;
@@ -5826,15 +5912,8 @@ fi
 
 
 
-# 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
-
-
-# Check whether --with-cloog was given.
-if test "${with_cloog+set}" = set; then :
-  withval=$with_cloog;
-fi
+# GCC GRAPHITE dependency ISL.
+# Basic setup is inlined here, actual checks are in config/isl.m4
 
 
 # Check whether --with-isl was given.
@@ -5843,10 +5922,9 @@ if test "${with_isl+set}" = set; then :
 fi
 
 
-# Treat either --without-cloog or --without-isl as a request to disable
+# Treat --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
+if test "x$with_isl" != "xno"; then
   # Check for ISL
 
 
@@ -5898,103 +5976,9 @@ fi
 $as_echo "$as_me: WARNING: using in-tree ISL, disabling version check" >&2;}
   fi
 
+  isllibs="${isllibs} -lisl"
 
 
-  if test "${ENABLE_ISL_CHECK}" = yes ; then
-    _isl_saved_CFLAGS=$CFLAGS
-    _isl_saved_LDFLAGS=$LDFLAGS
-    _isl_saved_LIBS=$LIBS
-
-    CFLAGS="${_isl_saved_CFLAGS} ${islinc} ${gmpinc}"
-    LDFLAGS="${_isl_saved_LDFLAGS} ${isllibs}"
-    LIBS="${_isl_saved_LIBS} -lisl"
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for version 0.10 of ISL" >&5
-$as_echo_n "checking for version 0.10 of ISL... " >&6; }
-    if test "$cross_compiling" = yes; then :
-  gcc_cv_isl=yes
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <isl/version.h>
-   #include <string.h>
-int
-main ()
-{
-if (strncmp (isl_version (), "isl-0.10", strlen ("isl-0.10")) != 0)
-     return 1;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  gcc_cv_isl=yes
-else
-  gcc_cv_isl=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_isl" >&5
-$as_echo "$gcc_cv_isl" >&6; }
-
-    CFLAGS=$_isl_saved_CFLAGS
-    LDFLAGS=$_isl_saved_LDFLAGS
-    LIBS=$_isl_saved_LIBS
-  fi
-
-
-  if test "${gcc_cv_isl}" = no ; then
-
-  if test "${ENABLE_ISL_CHECK}" = yes ; then
-    _isl_saved_CFLAGS=$CFLAGS
-    _isl_saved_LDFLAGS=$LDFLAGS
-    _isl_saved_LIBS=$LIBS
-
-    CFLAGS="${_isl_saved_CFLAGS} ${islinc} ${gmpinc}"
-    LDFLAGS="${_isl_saved_LDFLAGS} ${isllibs}"
-    LIBS="${_isl_saved_LIBS} -lisl"
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for version 0.11 of ISL" >&5
-$as_echo_n "checking for version 0.11 of ISL... " >&6; }
-    if test "$cross_compiling" = yes; then :
-  gcc_cv_isl=yes
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <isl/version.h>
-   #include <string.h>
-int
-main ()
-{
-if (strncmp (isl_version (), "isl-0.11", strlen ("isl-0.11")) != 0)
-     return 1;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  gcc_cv_isl=yes
-else
-  gcc_cv_isl=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_isl" >&5
-$as_echo "$gcc_cv_isl" >&6; }
-
-    CFLAGS=$_isl_saved_CFLAGS
-    LDFLAGS=$_isl_saved_LDFLAGS
-    LIBS=$_isl_saved_LIBS
-  fi
-
-
-    if test "${gcc_cv_isl}" = no ; then
 
   if test "${ENABLE_ISL_CHECK}" = yes ; then
     _isl_saved_CFLAGS=$CFLAGS
@@ -6005,34 +5989,26 @@ $as_echo "$gcc_cv_isl" >&6; }
     LDFLAGS="${_isl_saved_LDFLAGS} ${isllibs}"
     LIBS="${_isl_saved_LIBS} -lisl"
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for version 0.12 of ISL" >&5
-$as_echo_n "checking for version 0.12 of ISL... " >&6; }
-    if test "$cross_compiling" = yes; then :
-  gcc_cv_isl=yes
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for compatible ISL" >&5
+$as_echo_n "checking for compatible ISL... " >&6; }
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#include <isl/version.h>
-   #include <string.h>
+#include <isl/val.h>
 int
 main ()
 {
-if (strncmp (isl_version (), "isl-0.12", strlen ("isl-0.12")) != 0)
-     return 1;
-
+;
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"; then :
   gcc_cv_isl=yes
 else
   gcc_cv_isl=no
 fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
     { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_isl" >&5
 $as_echo "$gcc_cv_isl" >&6; }
 
@@ -6042,8 +6018,6 @@ $as_echo "$gcc_cv_isl" >&6; }
   fi
 
 
-    fi
-  fi
 
 
 
@@ -6073,197 +6047,18 @@ $as_echo "$gcc_cv_isl" >&6; }
   fi
 
 
-
-  if test "x$gcc_cv_isl" != "xno"; then
-    # Check for CLOOG
-
-
-# Check whether --with-cloog-include was given.
-if test "${with_cloog_include+set}" = set; then :
-  withval=$with_cloog_include;
-fi
-
-
-# Check whether --with-cloog-lib was given.
-if test "${with_cloog_lib+set}" = set; then :
-  withval=$with_cloog_lib;
-fi
-
-
-  # Check whether --enable-cloog-version-check was given.
-if test "${enable_cloog_version_check+set}" = set; then :
-  enableval=$enable_cloog_version_check; ENABLE_CLOOG_CHECK=$enableval
-else
-  ENABLE_CLOOG_CHECK=yes
-fi
-
-
-  # Initialize clooglibs and clooginc.
-  case $with_cloog in
-    no)
-      clooglibs=
-      clooginc=
-      ;;
-    "" | yes)
-      ;;
-    *)
-      clooglibs="-L$with_cloog/lib"
-      clooginc="-I$with_cloog/include"
-      ;;
-  esac
-  if test "x${with_cloog_include}" != x ; then
-    clooginc="-I$with_cloog_include"
-  fi
-  if test "x${with_cloog_lib}" != x; then
-    clooglibs="-L$with_cloog_lib"
-  fi
-        if test "x${clooginc}" = x && test "x${clooglibs}" = 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 -I'${srcdir}'/cloog/include '
-    ENABLE_CLOOG_CHECK=no
-    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using in-tree CLooG, disabling version check" >&5
-$as_echo "$as_me: WARNING: using in-tree CLooG, disabling version check" >&2;}
-  fi
-
-  clooginc="-DCLOOG_INT_GMP ${clooginc}"
-  clooglibs="${clooglibs} -lcloog-isl ${isllibs} -lisl"
-
-
-
-
-
-  if test "${ENABLE_CLOOG_CHECK}" = yes ; then
-    _cloog_saved_CFLAGS=$CFLAGS
-    _cloog_saved_LDFLAGS=$LDFLAGS
-
-    CFLAGS="${_cloog_saved_CFLAGS} ${clooginc} ${islinc} ${gmpinc}"
-    LDFLAGS="${_cloog_saved_LDFLAGS} ${clooglibs} ${isllibs} ${gmplib}"
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for version 0.17.0 of CLooG" >&5
-$as_echo_n "checking for version 0.17.0 of CLooG... " >&6; }
-    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include "cloog/version.h"
-int
-main ()
-{
-#if CLOOG_VERSION_MAJOR != 0 \
-    || CLOOG_VERSION_MINOR != 17 \
-    || CLOOG_VERSION_REVISION < 0
-    choke me
-   #endif
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  gcc_cv_cloog=yes
-else
-  gcc_cv_cloog=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_cloog" >&5
-$as_echo "$gcc_cv_cloog" >&6; }
-
-    CFLAGS=$_cloog_saved_CFLAGS
-    LDFLAGS=$_cloog_saved_LDFLAGS
-  fi
-
-
-    if test "${gcc_cv_cloog}" = no ; then
-
-
-
-  if test "${ENABLE_CLOOG_CHECK}" = yes ; then
-    _cloog_saved_CFLAGS=$CFLAGS
-    _cloog_saved_LDFLAGS=$LDFLAGS
-
-    CFLAGS="${_cloog_saved_CFLAGS} ${clooginc} ${islinc} ${gmpinc}"
-    LDFLAGS="${_cloog_saved_LDFLAGS} ${clooglibs} ${isllibs} ${gmplib}"
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for version 0.18.0 of CLooG" >&5
-$as_echo_n "checking for version 0.18.0 of CLooG... " >&6; }
-    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include "cloog/version.h"
-int
-main ()
-{
-#if CLOOG_VERSION_MAJOR != 0 \
-    || CLOOG_VERSION_MINOR != 18 \
-    || CLOOG_VERSION_REVISION < 0
-    choke me
-   #endif
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  gcc_cv_cloog=yes
-else
-  gcc_cv_cloog=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_cloog" >&5
-$as_echo "$gcc_cv_cloog" >&6; }
-
-    CFLAGS=$_cloog_saved_CFLAGS
-    LDFLAGS=$_cloog_saved_LDFLAGS
-  fi
-
-
-    fi
-
-
-
-
-
-  if test "x${with_cloog}" = xno; then
-    graphite_requested=no
-  elif test "x${with_cloog}" != x \
-    || test "x${with_cloog_include}" != x \
-    || test "x${with_cloog_lib}" != x ; then
-    graphite_requested=yes
-  else
-    graphite_requested=no
-  fi
-
-
-
-  if test "${gcc_cv_cloog}" = no ; then
-    clooglibs=
-    clooginc=
-  fi
-
-  if test "${graphite_requested}" = yes \
-    && test "x${clooglibs}" = x \
-    && test "x${clooginc}" = x ; then
-
-      as_fn_error "Unable to find a usable CLooG.  See config.log for details." "$LINENO" 5
-  fi
-
-
-  fi
 fi
 
-# If either the ISL or the CLooG check failed, disable builds of in-tree
-# variants of both
+# If the ISL check failed, disable builds of in-tree variant of ISL
 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="$noconfigdirs cloog isl"
+  noconfigdirs="$noconfigdirs isl"
   islinc=
-  clooginc=
-  clooglibs=
 fi
 
 
 
 
-
-
 # Check for LTO support.
 # Check whether --enable-lto was given.
 if test "${enable_lto+set}" = set; then :
@@ -6280,7 +6075,8 @@ target_elf=no
 case $target in
   *-darwin* | *-aix* | *-cygwin* | *-mingw* | *-aout* | *-*coff* | \
   *-msdosdjgpp* | *-vms* | *-wince* | *-*-pe* | \
-  alpha*-dec-osf* | *-interix* | hppa[12]*-*-hpux*)
+  alpha*-dec-osf* | *-interix* | hppa[12]*-*-hpux* | \
+  nvptx-*-none)
     target_elf=no
     ;;
   *)
@@ -6323,6 +6119,23 @@ else
 fi
 
 
+# Check whether --enable-linker-plugin-configure-flags was given.
+if test "${enable_linker_plugin_configure_flags+set}" = set; then :
+  enableval=$enable_linker_plugin_configure_flags; extra_linker_plugin_configure_flags=$enableval
+else
+  extra_linker_plugin_configure_flags=
+fi
+
+
+# Check whether --enable-linker-plugin-flags was given.
+if test "${enable_linker_plugin_flags+set}" = set; then :
+  enableval=$enable_linker_plugin_flags; extra_linker_plugin_flags=$enableval
+else
+  extra_linker_plugin_flags=
+fi
+
+
+
 
 # By default, C and C++ are the only stage 1 languages.
 stage1_languages=,c,
@@ -6423,7 +6236,6 @@ if test -d ${srcdir}/gcc; then
   new_enable_languages=,c,
 
   # If LTO is enabled, add the LTO front end.
-  extra_host_libiberty_configure_flags=
   if test "$enable_lto" = "yes" ; then
     case ,${enable_languages}, in
       *,lto,*) ;;
@@ -6431,10 +6243,16 @@ if test -d ${srcdir}/gcc; then
     esac
     if test "${build_lto_plugin}" = "yes" ; then
       configdirs="$configdirs lto-plugin"
-      extra_host_libiberty_configure_flags=--enable-shared
     fi
   fi
 
+  # If we're building an offloading compiler, add the LTO front end.
+  if test x"$enable_as_accelerator_for" != x ; then
+    case ,${enable_languages}, in
+      *,lto,*) ;;
+      *) enable_languages="${enable_languages},lto" ;;
+    esac
+  fi
 
   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
   potential_languages=,c,
@@ -6652,11 +6470,19 @@ case ,${enable_languages},:${enable_objc_gc} in
     ;;
 esac
 
-# Disable libitm, libsanitizer, libvtv if we're not building C++
+# Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
 case ,${enable_languages}, in
-  *,c++,*) ;;
+  *,c++,*)
+    # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
+    case "${noconfigdirs}" in
+      *target-libstdc++-v3*)
+        noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
+        ;;
+      *) ;;
+    esac
+    ;;
   *)
-    noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer target-libvtv"
+    noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
     ;;
 esac
 
@@ -6728,6 +6554,32 @@ for i in ${target_configdirs_all} ; do
   fi
 done
 
+# libiberty-linker-plugin is special: it doesn't have its own source directory,
+# so we have to add it after the preceding checks.
+if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
+then
+  case " $configdirs " in
+    *" libiberty "*)
+      # If we can build libiberty, we can also build libiberty-linker-plugin.
+      configdirs="$configdirs libiberty-linker-plugin"
+      extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
+        --with-libiberty=../libiberty-linker-plugin";;
+    *)
+      as_fn_error "libiberty missing" "$LINENO" 5;;
+  esac
+fi
+
+# Sometimes we have special requirements for the host libiberty.
+extra_host_libiberty_configure_flags=
+case " $configdirs " in
+  *" lto-plugin "* | *" libcc1 "*)
+    # When these are to be built as shared libraries, the same applies to
+    # libiberty.
+    extra_host_libiberty_configure_flags=--enable-shared
+    ;;
+esac
+
+
 # Produce a warning message for the subdirs we can't configure.
 # This isn't especially interesting in the Cygnus tree, but in the individual
 # FSF releases, it's important to let people know when their machine isn't
@@ -6852,28 +6704,36 @@ fi
 # gcc) are built with "-O2 -g", so include those options when setting
 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
 if test "x$CFLAGS_FOR_TARGET" = x; then
-  CFLAGS_FOR_TARGET=$CFLAGS
-  case " $CFLAGS " in
-    *" -O2 "*) ;;
-    *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
-  esac
-  case " $CFLAGS " in
-    *" -g "* | *" -g3 "*) ;;
-    *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
-  esac
+  if test "x${is_cross_compiler}" = xyes; then
+    CFLAGS_FOR_TARGET="-g -O2"
+  else
+    CFLAGS_FOR_TARGET=$CFLAGS
+    case " $CFLAGS " in
+      *" -O2 "*) ;;
+      *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
+    esac
+    case " $CFLAGS " in
+      *" -g "* | *" -g3 "*) ;;
+      *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
+    esac
+  fi
 fi
 
 
 if test "x$CXXFLAGS_FOR_TARGET" = x; then
-  CXXFLAGS_FOR_TARGET=$CXXFLAGS
-  case " $CXXFLAGS " in
-    *" -O2 "*) ;;
-    *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
-  esac
-  case " $CXXFLAGS " in
-    *" -g "* | *" -g3 "*) ;;
-    *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
-  esac
+  if test "x${is_cross_compiler}" = xyes; then
+    CXXFLAGS_FOR_TARGET="-g -O2"
+  else
+    CXXFLAGS_FOR_TARGET=$CXXFLAGS
+    case " $CXXFLAGS " in
+      *" -O2 "*) ;;
+      *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
+    esac
+    case " $CXXFLAGS " in
+      *" -g "* | *" -g3 "*) ;;
+      *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
+    esac
+  fi
 fi
 
 
@@ -7214,6 +7074,11 @@ if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
 fi
 
+# If we are building libmpx, bootstrap it.
+if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
+  bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
+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!
@@ -7437,7 +7302,7 @@ do
 
 
     case $lib in
-    mpc | mpfr | gmp | cloog)
+    mpc | mpfr | gmp | isl)
       # If we're processing --with-$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
@@ -7530,8 +7395,10 @@ tbaseargs="$tbaseargs --disable-option-checking"
 
 # For the build-side libraries, we just need to pretend we're native,
 # and not use the same cache file.  Multilibs are neither needed nor
-# desired.
-build_configargs="$build_configargs --cache-file=../config.cache ${baseargs}"
+# desired.  We can't even use the same cache file for all build-side
+# libraries, as they're compiled differently; some with C, some with
+# C++ or with different feature-enabling options.
+build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
 
 # For host modules, accept cache file option, or specification as blank.
 case "${cache_file}" in
@@ -14566,7 +14433,7 @@ $as_echo "just compiled" >&6; }
 $as_echo "pre-installed in $ac_dir" >&6; }
   elif test "x$target" = "x$host"; then
     # We can use an host tool
-    OBJCOPY_FOR_TARGET='$(OBJDUMP)'
+    OBJCOPY_FOR_TARGET='$(OBJCOPY)'
     { $as_echo "$as_me:${as_lineno-$LINENO}: result: host tool" >&5
 $as_echo "host tool" >&6; }
   else
@@ -14936,6 +14803,30 @@ fi
 
 
 
+# PR jit/64780: Require the user to explicitly specify
+# --enable-host-shared if the jit is enabled, hinting
+# that they might want to do a separate configure/build of
+# the jit, to avoid users from slowing down the rest of the
+# compiler by enabling the jit.
+if test ${host_shared} = "no" ; then
+  case "${enable_languages}" in
+    *jit*)
+      as_fn_error "
+Enabling language \"jit\" requires --enable-host-shared.
+
+--enable-host-shared typically slows the rest of the compiler down by
+a few %, so you must explicitly enable it.
+
+If you want to build both the jit and the regular compiler, it is often
+best to do this via two separate configure/builds, in separate
+directories, to avoid imposing the performance cost of
+--enable-host-shared on the regular compiler." "$LINENO" 5
+      ;;
+    *)
+      ;;
+  esac
+fi
+
 # Specify what files to not compare during bootstrap.
 
 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"