gimple-fold.c (fold_const_aggregate_ref_1): Use DECL_P.
[gcc.git] / configure
index 1804198338bdadf854bbd5b692a7e39e805ee918..d8043298ad0908298ccb53267d8e6f4e59b22b0d 100755 (executable)
--- a/configure
+++ b/configure
@@ -574,6 +574,7 @@ STRIP_FOR_TARGET
 READELF_FOR_TARGET
 RANLIB_FOR_TARGET
 OBJDUMP_FOR_TARGET
+OBJCOPY_FOR_TARGET
 NM_FOR_TARGET
 LIPO_FOR_TARGET
 LD_FOR_TARGET
@@ -833,6 +834,7 @@ DLLTOOL_FOR_TARGET
 LD_FOR_TARGET
 LIPO_FOR_TARGET
 NM_FOR_TARGET
+OBJCOPY_FOR_TARGET
 OBJDUMP_FOR_TARGET
 RANLIB_FOR_TARGET
 READELF_FOR_TARGET
@@ -1611,6 +1613,8 @@ Some influential environment variables:
               LIPO for the target
   NM_FOR_TARGET
               NM for the target
+  OBJCOPY_FOR_TARGET
+              OBJCOPY for the target
   OBJDUMP_FOR_TARGET
               OBJDUMP for the target
   RANLIB_FOR_TARGET
@@ -2725,7 +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 libcc1"
+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 \
@@ -2747,6 +2751,7 @@ target_libraries="target-libgcc \
                target-libstdc++-v3 \
                target-libsanitizer \
                target-libvtv \
+               target-libmpx \
                target-libssp \
                target-libquadmath \
                target-libgfortran \
@@ -3286,6 +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 "${target}" in
   avr-*-*)
@@ -3313,6 +3342,10 @@ case "${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.
@@ -3330,6 +3363,9 @@ if test "${ENABLE_LIBSTDCXX}" = "default" ; then
     avr-*-*)
       noconfigdirs="$noconfigdirs target-libstdc++-v3"
       ;;
+    ft32-*-*)
+      noconfigdirs="$noconfigdirs target-libstdc++-v3"
+      ;;
   esac
 fi
 
@@ -3425,6 +3461,9 @@ case "${target}" in
   alpha*-*-*vms*)
     noconfigdirs="$noconfigdirs ${libgcj}"
     ;;
+  arm*-*-freebsd*)
+    noconfigdirs="$noconfigdirs ${libgcj}"
+    ;;
   arm-wince-pe)
     noconfigdirs="$noconfigdirs ${libgcj}"
     ;;
@@ -3933,7 +3972,7 @@ fi
   *-mingw*)
     host_makefile_frag="config/mh-mingw"
     ;;
-  alpha*-*-linux*)
+  alpha*-linux*)
     host_makefile_frag="config/mh-alpha-linux"
     ;;
   hppa*-hp-hpux10*)
@@ -6036,7 +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
     ;;
   *)
@@ -6206,6 +6246,14 @@ if test -d ${srcdir}/gcc; then
     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,
 
@@ -6653,28 +6701,36 @@ 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
 
 
@@ -7015,6 +7071,11 @@ 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!
@@ -7365,7 +7426,7 @@ fi
 # multilib is not explicitly enabled.
 case "$target:$have_compiler:$host:$target:$enable_multilib" in
   x86_64-*linux*:yes:$build:$build:)
-    # Make sure we have a developement environment that handles 32-bit
+    # Make sure we have a development environment that handles 32-bit
     dev64=no
     echo "int main () { return 0; }" > conftest.c
     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
@@ -7376,7 +7437,7 @@ case "$target:$have_compiler:$host:$target:$enable_multilib" in
     fi
     rm -f conftest*
     if test x${dev64} != xyes ; then
-      as_fn_error "I suspect your system does not have 32-bit developement libraries (libc and headers). If you have them, rerun configure with --enable-multilib. If you do not have them, and want to build a 64-bit-only compiler, rerun configure with --disable-multilib." "$LINENO" 5
+      as_fn_error "I suspect your system does not have 32-bit development libraries (libc and headers). If you have them, rerun configure with --enable-multilib. If you do not have them, and want to build a 64-bit-only compiler, rerun configure with --disable-multilib." "$LINENO" 5
     fi
     ;;
 esac
 
 
 
+if test -z "$ac_cv_path_OBJCOPY_FOR_TARGET" ; then
+  if test -n "$with_build_time_tools"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for objcopy in $with_build_time_tools" >&5
+$as_echo_n "checking for objcopy in $with_build_time_tools... " >&6; }
+    if test -x $with_build_time_tools/objcopy; then
+      OBJCOPY_FOR_TARGET=`cd $with_build_time_tools && pwd`/objcopy
+      ac_cv_path_OBJCOPY_FOR_TARGET=$OBJCOPY_FOR_TARGET
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_OBJCOPY_FOR_TARGET" >&5
+$as_echo "$ac_cv_path_OBJCOPY_FOR_TARGET" >&6; }
+    else
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+    fi
+  elif test $build != $host && test $have_gcc_for_target = yes; then
+    OBJCOPY_FOR_TARGET=`$GCC_FOR_TARGET --print-prog-name=objcopy`
+    test $OBJCOPY_FOR_TARGET = objcopy && OBJCOPY_FOR_TARGET=
+    test -n "$OBJCOPY_FOR_TARGET" && ac_cv_path_OBJCOPY_FOR_TARGET=$OBJCOPY_FOR_TARGET
+  fi
+fi
+if test -z "$ac_cv_path_OBJCOPY_FOR_TARGET" && test -n "$gcc_cv_tool_dirs"; then
+  # Extract the first word of "objcopy", so it can be a program name with args.
+set dummy objcopy; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_path_OBJCOPY_FOR_TARGET+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $OBJCOPY_FOR_TARGET in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_OBJCOPY_FOR_TARGET="$OBJCOPY_FOR_TARGET" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $gcc_cv_tool_dirs
+do
+  IFS=$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" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_path_OBJCOPY_FOR_TARGET="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+OBJCOPY_FOR_TARGET=$ac_cv_path_OBJCOPY_FOR_TARGET
+if test -n "$OBJCOPY_FOR_TARGET"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJCOPY_FOR_TARGET" >&5
+$as_echo "$OBJCOPY_FOR_TARGET" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_path_OBJCOPY_FOR_TARGET" ; then
+
+
+if test -n "$OBJCOPY_FOR_TARGET"; then
+  ac_cv_prog_OBJCOPY_FOR_TARGET=$OBJCOPY_FOR_TARGET
+elif test -n "$ac_cv_prog_OBJCOPY_FOR_TARGET"; then
+  OBJCOPY_FOR_TARGET=$ac_cv_prog_OBJCOPY_FOR_TARGET
+fi
+
+if test -n "$ac_cv_prog_OBJCOPY_FOR_TARGET"; then
+  for ncn_progname in objcopy; do
+    # Extract the first word of "${ncn_progname}", so it can be a program name with args.
+set dummy ${ncn_progname}; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OBJCOPY_FOR_TARGET+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OBJCOPY_FOR_TARGET"; then
+  ac_cv_prog_OBJCOPY_FOR_TARGET="$OBJCOPY_FOR_TARGET" # Let the user override the test.
+else
+as_save_IFS=$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" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_OBJCOPY_FOR_TARGET="${ncn_progname}"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OBJCOPY_FOR_TARGET=$ac_cv_prog_OBJCOPY_FOR_TARGET
+if test -n "$OBJCOPY_FOR_TARGET"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJCOPY_FOR_TARGET" >&5
+$as_echo "$OBJCOPY_FOR_TARGET" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  done
+fi
+
+if test -z "$ac_cv_prog_OBJCOPY_FOR_TARGET" && test -n "$with_build_time_tools"; then
+  for ncn_progname in objcopy; do
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${ncn_progname} in $with_build_time_tools" >&5
+$as_echo_n "checking for ${ncn_progname} in $with_build_time_tools... " >&6; }
+    if test -x $with_build_time_tools/${ncn_progname}; then
+      ac_cv_prog_OBJCOPY_FOR_TARGET=$with_build_time_tools/${ncn_progname}
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+      break
+    else
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+    fi
+  done
+fi
+
+if test -z "$ac_cv_prog_OBJCOPY_FOR_TARGET"; then
+  for ncn_progname in objcopy; do
+    if test -n "$ncn_target_tool_prefix"; then
+      # Extract the first word of "${ncn_target_tool_prefix}${ncn_progname}", so it can be a program name with args.
+set dummy ${ncn_target_tool_prefix}${ncn_progname}; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OBJCOPY_FOR_TARGET+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OBJCOPY_FOR_TARGET"; then
+  ac_cv_prog_OBJCOPY_FOR_TARGET="$OBJCOPY_FOR_TARGET" # Let the user override the test.
+else
+as_save_IFS=$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" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_OBJCOPY_FOR_TARGET="${ncn_target_tool_prefix}${ncn_progname}"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OBJCOPY_FOR_TARGET=$ac_cv_prog_OBJCOPY_FOR_TARGET
+if test -n "$OBJCOPY_FOR_TARGET"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJCOPY_FOR_TARGET" >&5
+$as_echo "$OBJCOPY_FOR_TARGET" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    fi
+    if test -z "$ac_cv_prog_OBJCOPY_FOR_TARGET" && test $build = $target ; then
+      # Extract the first word of "${ncn_progname}", so it can be a program name with args.
+set dummy ${ncn_progname}; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OBJCOPY_FOR_TARGET+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OBJCOPY_FOR_TARGET"; then
+  ac_cv_prog_OBJCOPY_FOR_TARGET="$OBJCOPY_FOR_TARGET" # Let the user override the test.
+else
+as_save_IFS=$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" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_OBJCOPY_FOR_TARGET="${ncn_progname}"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OBJCOPY_FOR_TARGET=$ac_cv_prog_OBJCOPY_FOR_TARGET
+if test -n "$OBJCOPY_FOR_TARGET"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJCOPY_FOR_TARGET" >&5
+$as_echo "$OBJCOPY_FOR_TARGET" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    fi
+    test -n "$ac_cv_prog_OBJCOPY_FOR_TARGET" && break
+  done
+fi
+
+if test -z "$ac_cv_prog_OBJCOPY_FOR_TARGET" ; then
+  set dummy objcopy
+  if test $build = $target ; then
+    OBJCOPY_FOR_TARGET="$2"
+  else
+    OBJCOPY_FOR_TARGET="${ncn_target_tool_prefix}$2"
+  fi
+else
+  OBJCOPY_FOR_TARGET="$ac_cv_prog_OBJCOPY_FOR_TARGET"
+fi
+
+else
+  OBJCOPY_FOR_TARGET=$ac_cv_path_OBJCOPY_FOR_TARGET
+fi
+
+
+
+
 if test -z "$ac_cv_path_OBJDUMP_FOR_TARGET" ; then
   if test -n "$with_build_time_tools"; then
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for objdump in $with_build_time_tools" >&5
@@ -14107,6 +14398,48 @@ $as_echo "pre-installed" >&6; }
   fi
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking where to find the target objcopy" >&5
+$as_echo_n "checking where to find the target objcopy... " >&6; }
+if test "x${build}" != "x${host}" ; then
+  if expr "x$OBJCOPY_FOR_TARGET" : "x/" > /dev/null; then
+    # We already found the complete path
+    ac_dir=`dirname $OBJCOPY_FOR_TARGET`
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: pre-installed in $ac_dir" >&5
+$as_echo "pre-installed in $ac_dir" >&6; }
+  else
+    # Canadian cross, just use what we found
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: pre-installed" >&5
+$as_echo "pre-installed" >&6; }
+  fi
+else
+  ok=yes
+  case " ${configdirs} " in
+    *" binutils "*) ;;
+    *) ok=no ;;
+  esac
+
+  if test $ok = yes; then
+    # An in-tree tool is available and we can use it
+    OBJCOPY_FOR_TARGET='$$r/$(HOST_SUBDIR)/binutils/objcopy'
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: just compiled" >&5
+$as_echo "just compiled" >&6; }
+  elif expr "x$OBJCOPY_FOR_TARGET" : "x/" > /dev/null; then
+    # We already found the complete path
+    ac_dir=`dirname $OBJCOPY_FOR_TARGET`
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: pre-installed in $ac_dir" >&5
+$as_echo "pre-installed in $ac_dir" >&6; }
+  elif test "x$target" = "x$host"; then
+    # We can use an host tool
+    OBJCOPY_FOR_TARGET='$(OBJCOPY)'
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: host tool" >&5
+$as_echo "host tool" >&6; }
+  else
+    # We need a cross tool
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: pre-installed" >&5
+$as_echo "pre-installed" >&6; }
+  fi
+fi
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking where to find the target objdump" >&5
 $as_echo_n "checking where to find the target objdump... " >&6; }
 if test "x${build}" != "x${host}" ; then
@@ -14431,7 +14764,19 @@ if test "${enable_stage1_checking+set}" = set; then :
   enableval=$enable_stage1_checking; stage1_checking=--enable-checking=${enable_stage1_checking}
 else
   if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
-  stage1_checking=--enable-checking=yes,types
+  # For --disable-checking or implicit --enable-checking=release, avoid
+  # setting --enable-checking=gc in the default stage1 checking for LTO
+  # bootstraps.  See PR62077.
+  stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types
+  case $BUILD_CONFIG in
+    *lto*)
+      if test "x$enable_checking" = x && \
+        test -d ${srcdir}/gcc && \
+        test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
+       stage1_checking=--enable-checking=yes,types
+      fi;;
+    *) stage1_checking=--enable-checking=yes,types;;
+  esac
 else
   stage1_checking=--enable-checking=$enable_checking,types
 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/*"