configure.ac

   1 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   2 #   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
   3 #   2014, 2015, 2016, 2019, 2022 Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; see the file COPYING3.  If not see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 ##############################################################################
  20 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
  21
  22 m4_include(config/acx.m4)
  23 m4_include(config/override.m4)
  24 m4_include(config/proginstall.m4)
  25 m4_include(config/elf.m4)
  26 m4_include(config/ax_cxx_compile_stdcxx.m4)
  27 m4_include(config/gcc-plugin.m4)
  28 m4_include([libtool.m4])
  29 m4_include([ltoptions.m4])
  30 m4_include([ltsugar.m4])
  31 m4_include([ltversion.m4])
  32 m4_include([lt~obsolete.m4])
  33 m4_include([config/isl.m4])
  34
  35 AC_INIT(move-if-change)
  36 AC_DISABLE_OPTION_CHECKING
  37
  38 progname=$0
  39 # if PWD already has a value, it is probably wrong.
  40 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  41
  42 # Export original configure arguments for use by sub-configures.
  43 # Quote arguments with shell meta charatcers.
  44 TOPLEVEL_CONFIGURE_ARGUMENTS=
  45 set -- "$progname" "$@"
  46 for ac_arg
  47 do
  48   case "$ac_arg" in
  49   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  50     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  51     # if the argument is of the form -foo=baz, quote the baz part only
  52     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  53   *) ;;
  54   esac
  55   # Add the quoted argument to the list.
  56   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  57 done
  58 if test "$silent" = yes; then
  59   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  60 fi
  61 # Remove the initial space we just introduced and, as these will be
  62 # expanded by make, quote '$'.
  63 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  64 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  65
  66 # Find the build, host, and target systems.
  67 ACX_NONCANONICAL_BUILD
  68 ACX_NONCANONICAL_HOST
  69 ACX_NONCANONICAL_TARGET
  70
  71 dnl Autoconf 2.5x and later will set a default program prefix if
  72 dnl --target was used, even if it was the same as --host.  Disable
  73 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  74 dnl to take effect.
  75 test "$host_noncanonical" = "$target_noncanonical" &&
  76   test "$program_prefix$program_suffix$program_transform_name" = \
  77     NONENONEs,x,x, &&
  78   program_transform_name=s,y,y,
  79
  80 AC_CANONICAL_SYSTEM
  81 AC_ARG_PROGRAM
  82
  83 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  84 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  85
  86 # Get 'install' or 'install-sh' and its variants.
  87 AC_PROG_INSTALL
  88 ACX_PROG_LN
  89 AC_PROG_LN_S
  90 AC_PROG_SED
  91 AC_PROG_AWK
  92
  93 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  94
  95 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  96 # a relative path.
  97 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  98   INSTALL="${srcpwd}/install-sh -c"
  99 fi
 100
 101 # Set srcdir to "." if that's what it is.
 102 # This is important for multilib support.
 103 pwd=`${PWDCMD-pwd}`
 104 if test "${pwd}" = "${srcpwd}" ; then
 105   srcdir=.
 106 fi
 107
 108 topsrcdir=$srcpwd
 109
 110 extra_host_args=
 111
 112 ### To add a new directory to the tree, first choose whether it is a target
 113 ### or a host dependent tool.  Then put it into the appropriate list
 114 ### (library or tools, host or target), doing a dependency sort.
 115
 116 # Subdirs will be configured in the order listed in build_configdirs,
 117 # configdirs, or target_configdirs; see the serialization section below.
 118
 119 # Dependency sorting is only needed when *configuration* must be done in
 120 # a particular order.  In all cases a dependency should be specified in
 121 # the Makefile, whether or not it's implicitly specified here.
 122
 123 # Double entries in build_configdirs, configdirs, or target_configdirs may
 124 # cause circular dependencies and break everything horribly.
 125
 126 # these library is used by various programs built for the build
 127 # environment
 128 #
 129 build_libs="build-libiberty build-libcpp"
 130
 131 # these tools are built for the build environment
 132 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 133
 134 # these libraries are used by various programs built for the host environment
 135 #f
 136 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libcody libdecnumber gmp mpfr mpc isl libiconv libctf libsframe"
 137
 138 # these tools are built for the host environment
 139 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 140 # know that we are building the simulator.
 141 # binutils, gas and ld appear in that order because it makes sense to run
 142 # "make check" in that particular order.
 143 # If --enable-gold is used, "gold" may replace "ld".
 144 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gdbserver gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gm2tools gotools c++tools"
 145
 146 # these libraries are built for the target environment, and are built after
 147 # the host libraries and the host tools (which may be a cross compiler)
 148 # Note that libiberty is not a target library.
 149 target_libraries="target-libgcc \
 150                 target-libbacktrace \
 151                 target-libgloss \
 152                 target-newlib \
 153                 target-libgomp \
 154                 target-libatomic \
 155                 target-libitm \
 156                 target-libstdc++-v3 \
 157                 target-libsanitizer \
 158                 target-libvtv \
 159                 target-libssp \
 160                 target-libquadmath \
 161                 target-libgfortran \
 162                 target-libffi \
 163                 target-libobjc \
 164                 target-libada \
 165                 target-libgm2 \
 166                 target-libgo \
 167                 target-libphobos \
 168                 target-zlib"
 169
 170 # these tools are built using the target libraries, and are intended to
 171 # run only in the target environment
 172 #
 173 # note: any program that *uses* libraries that are in the "target_libraries"
 174 # list belongs in this list.
 175 #
 176 target_tools="target-rda"
 177
 178 ################################################################################
 179
 180 ## All tools belong in one of the four categories, and are assigned above
 181 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 182 ## is important because configure will choke if they ever get through.
 183 ## ${configdirs} is directories we build using the host tools.
 184 ## ${target_configdirs} is directories we build using the target tools.
 185 configdirs=`echo ${host_libs} ${host_tools}`
 186 target_configdirs=`echo ${target_libraries} ${target_tools}`
 187 build_configdirs=`echo ${build_libs} ${build_tools}`
 188
 189 m4_divert_text([PARSE_ARGS],
 190 [case $srcdir in
 191   *" "*)
 192 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 193     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 194 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 195     ;;
 196 esac
 197 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 198 ])
 199
 200 ################################################################################
 201
 202 srcname="gnu development package"
 203
 204 # This gets set non-empty for some net releases of packages.
 205 appdirs=""
 206
 207 # Define is_cross_compiler to save on calls to 'test'.
 208 is_cross_compiler=
 209 if test x"${host}" = x"${target}" ; then
 210   is_cross_compiler=no
 211 else
 212   is_cross_compiler=yes
 213 fi
 214
 215 # Find the build and target subdir names.
 216 GCC_TOPLEV_SUBDIRS
 217 # Be sure to cover against remnants of an in-tree build.
 218 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 219   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 220 Use a pristine source tree when building in a separate tree])
 221 fi
 222
 223 # Skipdirs are removed silently.
 224 skipdirs=
 225 # Noconfigdirs are removed loudly.
 226 noconfigdirs=""
 227
 228 use_gnu_ld=
 229 # Make sure we don't let GNU ld be added if we didn't want it.
 230 if test x$with_gnu_ld = xno ; then
 231   use_gnu_ld=no
 232   noconfigdirs="$noconfigdirs ld gold"
 233 fi
 234
 235 use_gnu_as=
 236 # Make sure we don't let GNU as be added if we didn't want it.
 237 if test x$with_gnu_as = xno ; then
 238   use_gnu_as=no
 239   noconfigdirs="$noconfigdirs gas"
 240 fi
 241
 242 use_included_zlib=
 243 AC_ARG_WITH(system-zlib,
 244 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
 245 # Make sure we don't let ZLIB be added if we didn't want it.
 246 if test x$with_system_zlib = xyes ; then
 247   use_included_zlib=no
 248   noconfigdirs="$noconfigdirs zlib"
 249 fi
 250
 251 # Don't compile the bundled readline/libreadline.a if --with-system-readline
 252 # is provided.
 253 if test x$with_system_readline = xyes ; then
 254   noconfigdirs="$noconfigdirs readline"
 255 fi
 256
 257 AC_ARG_WITH(zstd,
 258 [AS_HELP_STRING([--with-zstd], [Support zstd compressed debug sections (default=auto)])])
 259
 260 # some tools are so dependent upon X11 that if we're not building with X,
 261 # it's not even worth trying to configure, much less build, that tool.
 262
 263 case ${with_x} in
 264   yes | "") ;; # the default value for this tree is that X11 is available
 265   no)
 266     skipdirs="${skipdirs} tk itcl libgui"
 267     # We won't be able to build gdbtk without X.
 268     enable_gdbtk=no
 269     ;;
 270   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 271 esac
 272
 273 # Some are only suitable for cross toolchains.
 274 # Remove these if host=target.
 275 cross_only="target-libgloss target-newlib target-opcodes"
 276
 277 case $is_cross_compiler in
 278   no) skipdirs="${skipdirs} ${cross_only}" ;;
 279 esac
 280
 281 # If both --with-headers and --with-libs are specified, default to
 282 # --without-newlib.
 283 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 284    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 285   if test x"${with_newlib}" = x ; then
 286     with_newlib=no
 287   fi
 288 fi
 289
 290 # Recognize --with-newlib/--without-newlib.
 291 case ${with_newlib} in
 292   no) skipdirs="${skipdirs} target-newlib" ;;
 293   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 294 esac
 295
 296 AC_ARG_ENABLE(as-accelerator-for,
 297 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 298                 [build as offload target compiler.
 299                 Specify offload host triple by ARG])])
 300
 301 AC_ARG_ENABLE(offload-targets,
 302 [AS_HELP_STRING([--enable-offload-targets=LIST],
 303                 [enable offloading to devices from comma-separated LIST of
 304                 TARGET[=DIR]. Use optional path to find offload target compiler
 305                 during the build])],
 306 [
 307   if test x"$enable_offload_targets" = x; then
 308     AC_MSG_ERROR([no offload targets specified])
 309   fi
 310 ], [enable_offload_targets=])
 311
 312 AC_ARG_ENABLE(offload-defaulted,
 313 [AS_HELP_STRING([--enable-offload-defaulted]
 314                 [If enabled, configured but not installed offload compilers and
 315                 libgomp plugins are silently ignored.  Useful for distribution
 316                 compilers where those are in separate optional packages.])],
 317 [enable_offload_defaulted=$enableval],
 318 [enable_offload_defaulted=])
 319
 320 # Handle --enable-gold, --enable-ld.
 321 # --disable-gold [--enable-ld]
 322 #     Build only ld.  Default option.
 323 # --enable-gold [--enable-ld]
 324 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 325 #     as "ld.bfd" and "ld".
 326 # --enable-gold=default [--enable-ld]
 327 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 328 #     install ld as "ld.bfd".
 329 # --enable-gold[=default] --disable-ld
 330 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 331 # --enable-gold --enable-ld=default
 332 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 333 #     and ld.bfd).
 334 #     In other words, ld is default
 335 # --enable-gold=default --enable-ld=default
 336 #     Error.
 337
 338 default_ld=
 339 AC_ARG_ENABLE(gold,
 340 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 341                 [build gold @<:@ARG={default,yes,no}@:>@])],
 342 ENABLE_GOLD=$enableval,
 343 ENABLE_GOLD=no)
 344 case "${ENABLE_GOLD}" in
 345   yes|default)
 346     # Check for ELF target.
 347     is_elf=no
 348     case "${target}" in
 349       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 350       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 351       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 352       | *-*-solaris2* | *-*-nto* | *-*-nacl* | *-*-haiku*)
 353         case "${target}" in
 354           *-*-linux*aout* | *-*-linux*oldld*)
 355             ;;
 356           *)
 357             is_elf=yes
 358             ;;
 359         esac
 360     esac
 361
 362     if test "$is_elf" = "yes"; then
 363       # Check for target supported by gold.
 364       case "${target}" in
 365         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 366         | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-* | loongarch*-*-*)
 367           configdirs="$configdirs gold"
 368           if test x${ENABLE_GOLD} = xdefault; then
 369             default_ld=gold
 370           fi
 371           ENABLE_GOLD=yes
 372           ;;
 373       esac
 374     fi
 375     ;;
 376   no)
 377     ;;
 378   *)
 379     AC_MSG_ERROR([invalid --enable-gold argument])
 380     ;;
 381 esac
 382
 383 AC_ARG_ENABLE(ld,
 384 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 385                 [build ld @<:@ARG={default,yes,no}@:>@])],
 386 ENABLE_LD=$enableval,
 387 ENABLE_LD=yes)
 388
 389 case "${ENABLE_LD}" in
 390   default)
 391     if test x${default_ld} != x; then
 392       AC_MSG_ERROR([either gold or ld can be the default ld])
 393     fi
 394     ;;
 395   yes)
 396     ;;
 397   no)
 398     if test x${ENABLE_GOLD} != xyes; then
 399       AC_MSG_WARN([neither ld nor gold are enabled])
 400     fi
 401     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 402     ;;
 403   *)
 404     AC_MSG_ERROR([invalid --enable-ld argument])
 405     ;;
 406 esac
 407
 408 AC_ARG_ENABLE(gprofng,
 409 [AS_HELP_STRING([[--enable-gprofng[=ARG]]],
 410                 [build gprofng @<:@ARG={yes,no}@:>@])],
 411 enable_gprofng=$enableval,
 412 enable_gprofng=yes)
 413 if test "$enable_gprofng" = "yes"; then
 414   case "${target}" in
 415     x86_64-*-linux* | i?86-*-linux* | aarch64-*-linux*)
 416     configdirs="$configdirs gprofng"
 417     ;;
 418   esac
 419 fi
 420
 421
 422 # PR gas/19109
 423 # Decide the default method for compressing debug sections.
 424 # Provide a configure time option to override our default.
 425 AC_ARG_ENABLE(compressed_debug_sections,
 426 [AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
 427                 [Enable compressed debug sections for gas, gold or ld by
 428                  default])],
 429 [
 430   if test x"$enable_compressed_debug_sections" = xyes; then
 431     AC_MSG_ERROR([no program with compressed debug sections specified])
 432   fi
 433 ], [enable_compressed_debug_sections=])
 434
 435 # Select default compression algorithm.
 436 AC_ARG_ENABLE(default_compressed_debug_sections_algorithm,
 437 [AS_HELP_STRING([--enable-default-compressed-debug-sections-algorithm={zlib,zstd}],
 438                 [Default compression algorithm for --enable-compressed-debug-sections.])],
 439 [], [default_compressed_debug_sections_algorithm=])
 440
 441 # Configure extra directories which are host specific
 442
 443 case "${host}" in
 444   *-cygwin*)
 445     configdirs="$configdirs libtermcap" ;;
 446 esac
 447
 448 # A target can indicate whether a language isn't supported for some reason.
 449 # Only spaces may be used in this macro; not newlines or tabs.
 450 unsupported_languages=
 451
 452 # Remove more programs from consideration, based on the host or
 453 # target this usually means that a port of the program doesn't
 454 # exist yet.
 455
 456 case "${host}" in
 457   i[[3456789]]86-*-msdosdjgpp*)
 458     noconfigdirs="$noconfigdirs tcl tk itcl"
 459     ;;
 460 esac
 461
 462 # Default to --disable-year2038 until we can handle differences between
 463 # projects that use gnulib (which understands year 2038) and projects that
 464 # do not (like BFD).
 465 AC_ARG_ENABLE(year2038,
 466 AS_HELP_STRING([--enable-year2038],
 467   [enable support for timestamps past the year 2038]),
 468 ENABLE_YEAR2038=$enableval,
 469 ENABLE_YEAR2038=no)
 470 enable_year2038=
 471 if test "${ENABLE_YEAR2038}" = "no" ; then
 472   enable_year2038=no
 473 fi
 474
 475 AC_ARG_ENABLE(libquadmath,
 476 AS_HELP_STRING([--disable-libquadmath],
 477   [do not build libquadmath directory]),
 478 ENABLE_LIBQUADMATH=$enableval,
 479 ENABLE_LIBQUADMATH=yes)
 480 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 481   noconfigdirs="$noconfigdirs target-libquadmath"
 482 fi
 483
 484
 485 AC_ARG_ENABLE(libquadmath-support,
 486 AS_HELP_STRING([--disable-libquadmath-support],
 487   [disable libquadmath support for Fortran]),
 488 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 489 ENABLE_LIBQUADMATH_SUPPORT=yes)
 490 enable_libquadmath_support=
 491 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 492   enable_libquadmath_support=no
 493 fi
 494
 495
 496 AC_ARG_ENABLE(libada,
 497 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 498 ENABLE_LIBADA=$enableval,
 499 ENABLE_LIBADA=yes)
 500 if test "${ENABLE_LIBADA}" != "yes" ; then
 501   noconfigdirs="$noconfigdirs gnattools"
 502 fi
 503
 504 AC_ARG_ENABLE(libgm2,
 505 [AS_HELP_STRING([--enable-libgm2], [build libgm2 directory])],
 506 ENABLE_LIBGM2=$enableval,
 507 ENABLE_LIBGM2=no)
 508 if test "${ENABLE_LIBGM2}" != "yes" ; then
 509   noconfigdirs="$noconfigdirs gm2tools"
 510 fi
 511
 512 AC_ARG_ENABLE(libssp,
 513 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 514 ENABLE_LIBSSP=$enableval,
 515 ENABLE_LIBSSP=yes)
 516
 517 AC_ARG_ENABLE(libstdcxx,
 518 AS_HELP_STRING([--disable-libstdcxx],
 519   [do not build libstdc++-v3 directory]),
 520 ENABLE_LIBSTDCXX=$enableval,
 521 ENABLE_LIBSTDCXX=default)
 522 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 523   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 524 fi]
 525
 526 # Enable libgomp by default on hosted POSIX systems, and a few others.
 527 if test x$enable_libgomp = x ; then
 528     case "${target}" in
 529     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 530         ;;
 531     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 532         ;;
 533     *-*-solaris2* | *-*-hpux11*)
 534         ;;
 535     *-*-darwin* | *-*-aix*)
 536         ;;
 537     nvptx*-*-* | amdgcn*-*-*)
 538         ;;
 539     *)
 540         noconfigdirs="$noconfigdirs target-libgomp"
 541         ;;
 542     esac
 543 fi
 544
 545 # Disable libatomic on unsupported systems.
 546 if test -d ${srcdir}/libatomic; then
 547     if test x$enable_libatomic = x; then
 548         AC_MSG_CHECKING([for libatomic support])
 549         if (srcdir=${srcdir}/libatomic; \
 550                 . ${srcdir}/configure.tgt; \
 551                 test -n "$UNSUPPORTED")
 552         then
 553             AC_MSG_RESULT([no])
 554             noconfigdirs="$noconfigdirs target-libatomic"
 555         else
 556             AC_MSG_RESULT([yes])
 557         fi
 558     fi
 559 fi
 560
 561 # Disable libitm on unsupported systems.
 562 if test -d ${srcdir}/libitm; then
 563     if test x$enable_libitm = x; then
 564         AC_MSG_CHECKING([for libitm support])
 565         if (srcdir=${srcdir}/libitm; \
 566                 . ${srcdir}/configure.tgt; \
 567                 test -n "$UNSUPPORTED")
 568         then
 569             AC_MSG_RESULT([no])
 570             noconfigdirs="$noconfigdirs target-libitm"
 571         else
 572             AC_MSG_RESULT([yes])
 573         fi
 574     fi
 575 fi
 576
 577 # Disable libsanitizer on unsupported systems.
 578 if test -d ${srcdir}/libsanitizer; then
 579     if test x$enable_libsanitizer = x; then
 580         AC_MSG_CHECKING([for libsanitizer support])
 581         if (srcdir=${srcdir}/libsanitizer; \
 582                 . ${srcdir}/configure.tgt; \
 583                 test -n "$UNSUPPORTED")
 584         then
 585             AC_MSG_RESULT([no])
 586             noconfigdirs="$noconfigdirs target-libsanitizer"
 587         else
 588             AC_MSG_RESULT([yes])
 589         fi
 590     fi
 591 fi
 592
 593 # Disable libvtv on unsupported systems.
 594 if test -d ${srcdir}/libvtv; then
 595     if test x$enable_libvtv = x; then
 596         AC_MSG_CHECKING([for libvtv support])
 597         if (srcdir=${srcdir}/libvtv; \
 598                 . ${srcdir}/configure.tgt; \
 599                 test "$VTV_SUPPORTED" != "yes")
 600         then
 601             AC_MSG_RESULT([no])
 602             noconfigdirs="$noconfigdirs target-libvtv"
 603         else
 604             AC_MSG_RESULT([yes])
 605         fi
 606     fi
 607 fi
 608
 609 # Disable libquadmath for some systems.
 610 case "${target}" in
 611   avr-*-*)
 612     noconfigdirs="$noconfigdirs target-libquadmath"
 613     ;;
 614   # libquadmath is unused on AIX and libquadmath build process use of
 615   # LD_LIBRARY_PATH can break AIX bootstrap.
 616   powerpc-*-aix* | rs6000-*-aix*)
 617     noconfigdirs="$noconfigdirs target-libquadmath"
 618     ;;
 619 esac
 620
 621 # Disable libssp for some systems.
 622 case "${target}" in
 623   avr-*-*)
 624     # No hosted I/O support.
 625     noconfigdirs="$noconfigdirs target-libssp"
 626     ;;
 627   bpf-*-*)
 628     noconfigdirs="$noconfigdirs target-libssp"
 629     ;;
 630   powerpc-*-aix* | rs6000-*-aix*)
 631     noconfigdirs="$noconfigdirs target-libssp"
 632     ;;
 633   pru-*-*)
 634     # No hosted I/O support.
 635     noconfigdirs="$noconfigdirs target-libssp"
 636     ;;
 637   rl78-*-*)
 638     # libssp uses a misaligned load to trigger a fault, but the RL78
 639     # doesn't fault for those - instead, it gives a build-time error
 640     # for explicit misaligned loads.
 641     noconfigdirs="$noconfigdirs target-libssp"
 642     ;;
 643   visium-*-*)
 644     # No hosted I/O support.
 645     noconfigdirs="$noconfigdirs target-libssp"
 646     ;;
 647 esac
 648
 649 # Disable libstdc++-v3 for some systems.
 650 # Allow user to override this if they pass --enable-libstdcxx
 651 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 652   case "${target}" in
 653     *-*-vxworks*)
 654       # VxWorks uses the Dinkumware C++ library.
 655       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 656       ;;
 657     amdgcn*-*-*)
 658       # Not ported/fails to build when using newlib.
 659       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 660       ;;
 661     arm*-wince-pe*)
 662       # the C++ libraries don't build on top of CE's C libraries
 663       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 664       ;;
 665     avr-*-*)
 666       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 667       ;;
 668     bpf-*-*)
 669       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 670       ;;
 671     ft32-*-*)
 672       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 673       ;;
 674   esac
 675 fi
 676
 677 # Disable C++ on systems where it is known to not work.
 678 # For testing, you can override this with --enable-languages=c++.
 679 case ,${enable_languages}, in
 680   *,c++,*)
 681     ;;
 682   *)
 683       case "${target}" in
 684         bpf-*-*)
 685           unsupported_languages="$unsupported_languages c++"
 686           ;;
 687       esac
 688       ;;
 689 esac
 690
 691 # Disable Objc on systems where it is known to not work.
 692 # For testing, you can override this with --enable-languages=objc.
 693 case ,${enable_languages}, in
 694   *,objc,*)
 695     ;;
 696   *)
 697       case "${target}" in
 698         bpf-*-*)
 699           unsupported_languages="$unsupported_languages objc"
 700           ;;
 701       esac
 702       ;;
 703 esac
 704
 705 # Disable D on systems where it is known to not work.
 706 # For testing, you can override this with --enable-languages=d.
 707 case ,${enable_languages}, in
 708   *,d,*)
 709     ;;
 710   *)
 711     case "${target}" in
 712       bpf-*-*)
 713         unsupported_languages="$unsupported_languages d"
 714         ;;
 715     esac
 716     ;;
 717 esac
 718
 719 # Disable libphobos on unsupported systems.
 720 # For testing, you can override this with --enable-libphobos.
 721 if test -d ${srcdir}/libphobos; then
 722     if test x$enable_libphobos = x; then
 723         AC_MSG_CHECKING([for libphobos support])
 724         if (srcdir=${srcdir}/libphobos; \
 725                 . ${srcdir}/configure.tgt; \
 726                 test "$LIBPHOBOS_SUPPORTED" != "yes")
 727         then
 728             AC_MSG_RESULT([no])
 729             noconfigdirs="$noconfigdirs target-libphobos"
 730         else
 731             AC_MSG_RESULT([yes])
 732         fi
 733     fi
 734 fi
 735
 736 # Disable Fortran for some systems.
 737 case "${target}" in
 738   mmix-*-*)
 739     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 740     unsupported_languages="$unsupported_languages fortran"
 741     ;;
 742   bpf-*-*)
 743     unsupported_languages="$unsupported_languages fortran"
 744     ;;
 745 esac
 746
 747 # Disable libffi for some systems.
 748 case "${target}" in
 749   powerpc-*-darwin*)
 750     ;;
 751   i[[3456789]]86-*-darwin*)
 752     ;;
 753   x86_64-*-darwin[[912]]*)
 754     ;;
 755   *-*-darwin*)
 756     noconfigdirs="$noconfigdirs target-libffi"
 757     ;;
 758   *-*-netware*)
 759     noconfigdirs="$noconfigdirs target-libffi"
 760     ;;
 761   *-*-phoenix*)
 762     noconfigdirs="$noconfigdirs target-libffi"
 763     ;;
 764   *-*-rtems*)
 765     noconfigdirs="$noconfigdirs target-libffi"
 766     ;;
 767   *-*-tpf*)
 768     noconfigdirs="$noconfigdirs target-libffi"
 769     ;;
 770   *-*-uclinux*)
 771     noconfigdirs="$noconfigdirs target-libffi"
 772     ;;
 773   *-*-vxworks*)
 774     noconfigdirs="$noconfigdirs target-libffi"
 775     ;;
 776   aarch64*-*-freebsd*)
 777     noconfigdirs="$noconfigdirs target-libffi"
 778     ;;
 779   alpha*-*-*vms*)
 780     noconfigdirs="$noconfigdirs target-libffi"
 781     ;;
 782   arm*-*-freebsd*)
 783     noconfigdirs="$noconfigdirs target-libffi"
 784     ;;
 785   arm-wince-pe)
 786     noconfigdirs="$noconfigdirs target-libffi"
 787     ;;
 788   arm*-*-symbianelf*)
 789     noconfigdirs="$noconfigdirs target-libffi"
 790     ;;
 791   bpf-*-*)
 792     noconfigdirs="$noconfigdirs target-libffi"
 793     ;;
 794   cris-*-* | crisv32-*-*)
 795     case "${target}" in
 796       *-*-linux*)
 797         ;;
 798       *) # See PR46792 regarding target-libffi.
 799         noconfigdirs="$noconfigdirs target-libffi";;
 800     esac
 801     ;;
 802   hppa*64*-*-hpux*)
 803     noconfigdirs="$noconfigdirs target-libffi"
 804     ;;
 805   hppa*-hp-hpux11*)
 806     ;;
 807   hppa*-*-hpux*)
 808     noconfigdirs="$noconfigdirs target-libffi"
 809     ;;
 810   ia64*-*-*vms*)
 811     noconfigdirs="$noconfigdirs target-libffi"
 812     ;;
 813   i[[3456789]]86-w64-mingw*)
 814     noconfigdirs="$noconfigdirs target-libffi"
 815     ;;
 816   i[[3456789]]86-*-mingw*)
 817     noconfigdirs="$noconfigdirs target-libffi"
 818     ;;
 819   x86_64-*-mingw*)
 820     noconfigdirs="$noconfigdirs target-libffi"
 821     ;;
 822   mmix-*-*)
 823     noconfigdirs="$noconfigdirs target-libffi"
 824     ;;
 825   powerpc-*-aix*)
 826     ;;
 827   rs6000-*-aix*)
 828     ;;
 829   ft32-*-*)
 830     noconfigdirs="$noconfigdirs target-libffi"
 831     ;;
 832   *-*-lynxos*)
 833     noconfigdirs="$noconfigdirs target-libffi"
 834     ;;
 835 esac
 836
 837 # Disable the go frontend on systems where it is known to not work. Please keep
 838 # this in sync with contrib/config-list.mk.
 839 case "${target}" in
 840 *-*-darwin* | *-*-cygwin* | *-*-mingw* | bpf-* )
 841     unsupported_languages="$unsupported_languages go"
 842     ;;
 843 esac
 844
 845 # Only allow gdbserver on some systems.
 846 if test -d ${srcdir}/gdbserver; then
 847     if test x$enable_gdbserver = x; then
 848         AC_MSG_CHECKING([for gdbserver support])
 849         if (srcdir=${srcdir}/gdbserver; \
 850                 . ${srcdir}/configure.srv; \
 851                 test -n "$UNSUPPORTED")
 852         then
 853             AC_MSG_RESULT([no])
 854             noconfigdirs="$noconfigdirs gdbserver"
 855         else
 856             AC_MSG_RESULT([yes])
 857         fi
 858     fi
 859 fi
 860
 861 # Disable libgo for some systems where it is known to not work.
 862 # For testing, you can easily override this with --enable-libgo.
 863 if test x$enable_libgo = x; then
 864     case "${target}" in
 865     *-*-darwin*)
 866         # PR 46986
 867         noconfigdirs="$noconfigdirs target-libgo"
 868         ;;
 869     *-*-cygwin* | *-*-mingw*)
 870         noconfigdirs="$noconfigdirs target-libgo"
 871         ;;
 872     bpf-*-*)
 873         noconfigdirs="$noconfigdirs target-libgo"
 874         ;;
 875     esac
 876 fi
 877
 878 # Default libgloss CPU subdirectory.
 879 libgloss_dir="$target_cpu"
 880
 881 case "${target}" in
 882   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 883     libgloss_dir=wince
 884     ;;
 885   aarch64*-*-* )
 886     libgloss_dir=aarch64
 887     ;;
 888   arm*-*-*)
 889     libgloss_dir=arm
 890     ;;
 891   cris-*-* | crisv32-*-*)
 892     libgloss_dir=cris
 893     ;;
 894   hppa*-*-*)
 895     libgloss_dir=pa
 896     ;;
 897   i[[3456789]]86-*-*)
 898     libgloss_dir=i386
 899     ;;
 900   loongarch*-*-*)
 901     libgloss_dir=loongarch
 902     ;;
 903   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 904     libgloss_dir=m68hc11
 905     ;;
 906   m68*-*-* | fido-*-*)
 907     libgloss_dir=m68k
 908     ;;
 909   mips*-*-*)
 910     libgloss_dir=mips
 911     ;;
 912   powerpc*-*-*)
 913     libgloss_dir=rs6000
 914     ;;
 915   pru-*-*)
 916     libgloss_dir=pru
 917     ;;
 918   sparc*-*-*)
 919     libgloss_dir=sparc
 920     ;;
 921 esac
 922
 923 # Disable newlib and libgloss for various target OSes.
 924 case "${target}" in
 925   alpha*-dec-osf*)
 926     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 927     ;;
 928   i[[3456789]]86-*-linux*)
 929     # This section makes it possible to build newlib natively on linux.
 930     # If we are using a cross compiler then don't configure newlib.
 931     if test x${is_cross_compiler} != xno ; then
 932       noconfigdirs="$noconfigdirs target-newlib"
 933     fi
 934     noconfigdirs="$noconfigdirs target-libgloss"
 935     # If we are not using a cross compiler, do configure newlib.
 936     # Note however, that newlib will only be configured in this situation
 937     # if the --with-newlib option has been given, because otherwise
 938     # 'target-newlib' will appear in skipdirs.
 939     ;;
 940   i[[3456789]]86-*-rdos*)
 941     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 942     ;;
 943   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 944     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 945     ;;
 946   sparc-*-sunos4*)
 947     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 948     ;;
 949   bpf-*-*)
 950     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 951     ;;
 952   *-*-aix*)
 953     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 954     ;;
 955   *-*-beos*)
 956     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 957     ;;
 958   *-*-chorusos)
 959     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 960     ;;
 961   *-*-dragonfly*)
 962     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 963     ;;
 964   *-*-freebsd*)
 965     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 966     ;;
 967   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 968     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 969     ;;
 970   *-*-lynxos*)
 971     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 972     ;;
 973   *-*-mingw*)
 974     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 975     ;;
 976   *-*-netbsd*)
 977     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 978     ;;
 979   *-*-netware*)
 980     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 981     ;;
 982   *-*-tpf*)
 983     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 984     ;;
 985   *-*-uclinux*)
 986     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 987     ;;
 988   *-*-vxworks*)
 989     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 990     ;;
 991 esac
 992
 993 case "${target}" in
 994   *-*-chorusos)
 995     ;;
 996   aarch64-*-darwin*)
 997     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 998     noconfigdirs="$noconfigdirs sim target-rda"
 999     ;;
1000   amdgcn*-*-*)
1001     ;;
1002   arm-*-darwin*)
1003     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1004     noconfigdirs="$noconfigdirs sim target-rda"
1005     ;;
1006   powerpc-*-darwin*)
1007     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1008     noconfigdirs="$noconfigdirs sim target-rda"
1009     ;;
1010   i[[3456789]]86-*-darwin*)
1011     noconfigdirs="$noconfigdirs ld gprof"
1012     noconfigdirs="$noconfigdirs sim target-rda"
1013     ;;
1014   x86_64-*-darwin[[912]]*)
1015     noconfigdirs="$noconfigdirs ld gas gprof"
1016     noconfigdirs="$noconfigdirs sim target-rda"
1017     ;;
1018   *-*-darwin*)
1019     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1020     noconfigdirs="$noconfigdirs sim target-rda"
1021     ;;
1022   *-*-dragonfly*)
1023     ;;
1024   *-*-freebsd*)
1025     if test "x$with_gmp" = x \
1026         && ! test -d ${srcdir}/gmp \
1027         && test -f /usr/local/include/gmp.h; then
1028       with_gmp=/usr/local
1029     fi
1030     ;;
1031   *-*-kaos*)
1032     # Remove unsupported stuff on all kaOS configurations.
1033     noconfigdirs="$noconfigdirs target-libgloss"
1034     ;;
1035   *-*-netbsd*)
1036     ;;
1037   *-*-netware*)
1038     ;;
1039   *-*-phoenix*)
1040     noconfigdirs="$noconfigdirs target-libgloss"
1041     ;;
1042   *-*-rtems*)
1043     noconfigdirs="$noconfigdirs target-libgloss"
1044     ;;
1045     # The tpf target doesn't support gdb yet.
1046   *-*-tpf*)
1047     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
1048     ;;
1049   *-*-uclinux*)
1050     noconfigdirs="$noconfigdirs target-rda"
1051     ;;
1052   *-*-vxworks*)
1053     ;;
1054   alpha*-dec-osf*)
1055     # ld works, but does not support shared libraries.
1056     # gas doesn't generate exception information.
1057     noconfigdirs="$noconfigdirs gas ld"
1058     ;;
1059   alpha*-*-*vms*)
1060     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1061     ;;
1062   alpha*-*-*)
1063     # newlib is not 64 bit ready
1064     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1065     ;;
1066   bpf-*-*)
1067     noconfigdirs="$noconfigdirs target-libobjc target-libbacktrace"
1068     ;;
1069   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1070     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1071     ;;
1072   arc*-*-*)
1073     noconfigdirs="$noconfigdirs sim"
1074     ;;
1075   arm-*-pe*)
1076     noconfigdirs="$noconfigdirs target-libgloss"
1077     ;;
1078   arm-*-riscix*)
1079     noconfigdirs="$noconfigdirs ld target-libgloss"
1080     ;;
1081   avr-*-*)
1082     if test x${with_avrlibc} != xno; then
1083       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1084     fi
1085     ;;
1086   c4x-*-* | tic4x-*-*)
1087     noconfigdirs="$noconfigdirs target-libgloss"
1088     ;;
1089   tic54x-*-*)
1090     noconfigdirs="$noconfigdirs target-libgloss gdb"
1091     ;;
1092   d10v-*-*)
1093     noconfigdirs="$noconfigdirs target-libgloss"
1094     ;;
1095   d30v-*-*)
1096     noconfigdirs="$noconfigdirs gdb"
1097     ;;
1098   fr30-*-elf*)
1099     noconfigdirs="$noconfigdirs gdb"
1100     ;;
1101   ft32-*-*)
1102     noconfigdirs="$noconfigdirs target-rda gprof"
1103     ;;
1104   moxie-*-*)
1105     noconfigdirs="$noconfigdirs"
1106     ;;
1107   h8300*-*-*)
1108     noconfigdirs="$noconfigdirs target-libgloss"
1109     ;;
1110   h8500-*-*)
1111     noconfigdirs="$noconfigdirs target-libgloss"
1112     ;;
1113   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1114     ;;
1115   hppa*64*-*-hpux*)
1116     noconfigdirs="$noconfigdirs gdb"
1117     ;;
1118   hppa*-*-hpux11*)
1119     noconfigdirs="$noconfigdirs gdb ld"
1120     ;;
1121   hppa*64*-*-linux*)
1122     ;;
1123   hppa*-*-linux*)
1124     ;;
1125   hppa*-*-*elf* | \
1126   hppa*-*-lites* | \
1127   hppa*-*-openbsd* | \
1128   hppa*64*-*-*)
1129     ;;
1130   hppa*-*-pro*)
1131     ;;
1132   hppa*-*-*)
1133     noconfigdirs="$noconfigdirs ld"
1134     ;;
1135   i960-*-*)
1136     noconfigdirs="$noconfigdirs gdb"
1137     ;;
1138   ia64*-*-elf*)
1139     # No gdb support yet.
1140     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1141     ;;
1142   ia64*-**-hpux*)
1143     # No ld support yet.
1144     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1145     ;;
1146   ia64*-*-*vms*)
1147     # No ld support yet.
1148     noconfigdirs="$noconfigdirs libgui itcl ld"
1149     ;;
1150   i[[3456789]]86-w64-mingw*)
1151     ;;
1152   i[[3456789]]86-*-mingw*)
1153     target_configdirs="$target_configdirs target-winsup"
1154     ;;
1155   *-*-cygwin*)
1156     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1157     noconfigdirs="$noconfigdirs target-libgloss"
1158     # always build newlib if winsup directory is present.
1159     if test -d "$srcdir/winsup/cygwin"; then
1160       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1161     elif test -d "$srcdir/newlib"; then
1162       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1163     fi
1164     ;;
1165   i[[3456789]]86-*-pe)
1166     noconfigdirs="$noconfigdirs target-libgloss"
1167     ;;
1168   i[[3456789]]86-*-sco3.2v5*)
1169     # The linker does not yet know about weak symbols in COFF,
1170     # and is not configured to handle mixed ELF and COFF.
1171     noconfigdirs="$noconfigdirs ld target-libgloss"
1172     ;;
1173   i[[3456789]]86-*-sco*)
1174     noconfigdirs="$noconfigdirs gprof target-libgloss"
1175     ;;
1176   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1177     noconfigdirs="$noconfigdirs target-libgloss"
1178     ;;
1179   i[[3456789]]86-*-sysv4*)
1180     noconfigdirs="$noconfigdirs target-libgloss"
1181     ;;
1182   i[[3456789]]86-*-beos*)
1183     noconfigdirs="$noconfigdirs gdb"
1184     ;;
1185   i[[3456789]]86-*-rdos*)
1186     noconfigdirs="$noconfigdirs gdb"
1187     ;;
1188   mmix-*-*)
1189     noconfigdirs="$noconfigdirs gdb"
1190     ;;
1191   mt-*-*)
1192     noconfigdirs="$noconfigdirs sim"
1193     ;;
1194   nfp-*-*)
1195     noconfigdirs="$noconfigdirs ld gas gdb gprof sim"
1196     noconfigdirs="$noconfigdirs $target_libraries"
1197     ;;
1198   pdp11-*-*)
1199     noconfigdirs="$noconfigdirs gdb gprof"
1200     ;;
1201   powerpc-*-aix*)
1202     # copied from rs6000-*-* entry
1203     noconfigdirs="$noconfigdirs gprof"
1204     ;;
1205   powerpc*-*-winnt* | powerpc*-*-pe*)
1206     target_configdirs="$target_configdirs target-winsup"
1207     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1208     # always build newlib.
1209     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1210     ;;
1211     # This is temporary until we can link against shared libraries
1212   powerpcle-*-solaris*)
1213     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1214     ;;
1215   powerpc-*-beos*)
1216     noconfigdirs="$noconfigdirs gdb"
1217     ;;
1218   rs6000-*-lynxos*)
1219     noconfigdirs="$noconfigdirs gprof"
1220     ;;
1221   rs6000-*-aix*)
1222     noconfigdirs="$noconfigdirs gprof"
1223     ;;
1224   rs6000-*-*)
1225     noconfigdirs="$noconfigdirs gprof"
1226     ;;
1227   m68k-apollo-*)
1228     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1229     ;;
1230   microblaze*)
1231     noconfigdirs="$noconfigdirs gprof"
1232     ;;
1233   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1234     if test x$with_newlib = xyes; then
1235       noconfigdirs="$noconfigdirs gprof"
1236     fi
1237     ;;
1238   mips*-*-irix5*)
1239     noconfigdirs="$noconfigdirs gprof target-libgloss"
1240     ;;
1241   mips*-*-irix6*)
1242     noconfigdirs="$noconfigdirs gprof target-libgloss"
1243     ;;
1244   mips*-*-bsd*)
1245     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1246     ;;
1247   mips*-*-linux*)
1248     ;;
1249   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1250   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1251     noconfigdirs="$noconfigdirs ld gas gprof"
1252     ;;
1253   mips*-*-*)
1254     noconfigdirs="$noconfigdirs gprof"
1255     ;;
1256   nvptx*-*-*)
1257     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1258     ;;
1259   sh-*-*)
1260     case "${target}" in
1261       sh*-*-elf)
1262          ;;
1263       *)
1264          noconfigdirs="$noconfigdirs target-libgloss" ;;
1265     esac
1266     ;;
1267   sparc-*-sunos4*)
1268     if test x${is_cross_compiler} = xno ; then
1269            use_gnu_ld=no
1270     fi
1271     ;;
1272   tic6x-*-*)
1273     noconfigdirs="$noconfigdirs sim"
1274     ;;
1275   tilepro*-*-* | tilegx*-*-*)
1276     noconfigdirs="$noconfigdirs sim"
1277     ;;
1278   v810-*-*)
1279     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1280     ;;
1281   vax-*-*)
1282     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1283     ;;
1284   wasm32-*-*)
1285     noconfigdirs="$noconfigdirs ld"
1286     ;;
1287   loongarch*-*-linux*)
1288     ;;
1289   loongarch*-*-*)
1290     noconfigdirs="$noconfigdirs gprof"
1291     ;;
1292 esac
1293
1294 # If we aren't building newlib, then don't build libgloss, since libgloss
1295 # depends upon some newlib header files.
1296 case "${noconfigdirs}" in
1297   *target-libgloss*) ;;
1298   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1299 esac
1300
1301 # Work in distributions that contain no compiler tools, like Autoconf.
1302 host_makefile_frag=/dev/null
1303 if test -d ${srcdir}/config ; then
1304 case "${host}" in
1305   i[[3456789]]86-*-msdosdjgpp*)
1306     host_makefile_frag="config/mh-djgpp"
1307     ;;
1308   *-cygwin*)
1309     ACX_CHECK_CYGWIN_CAT_WORKS
1310     host_makefile_frag="config/mh-cygwin"
1311     ;;
1312   *-mingw*)
1313     host_makefile_frag="config/mh-mingw"
1314     ;;
1315   alpha*-linux*)
1316     host_makefile_frag="config/mh-alpha-linux"
1317     ;;
1318   hppa*-hp-hpux*)
1319     host_makefile_frag="config/mh-pa"
1320     ;;
1321   hppa*-*)
1322     host_makefile_frag="config/mh-pa"
1323     ;;
1324   i?86-*-darwin[[89]]* | i?86-*-darwin1[[0-7]]* | powerpc*-*-darwin*)
1325     host_makefile_frag="config/mh-darwin"
1326     ;;
1327   powerpc-*-aix*)
1328     host_makefile_frag="config/mh-ppc-aix"
1329     ;;
1330   rs6000-*-aix*)
1331     host_makefile_frag="config/mh-ppc-aix"
1332     ;;
1333 esac
1334 fi
1335
1336 if test "${build}" != "${host}" ; then
1337   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1338   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1339   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1340   CPP_FOR_BUILD="${CPP_FOR_BUILD-\$(CC_FOR_BUILD) -E}"
1341   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1342   DSYMUTIL_FOR_BUILD=${DSYMUTIL_FOR_BUILD-dsymutil}
1343   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1344   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1345   GDC_FOR_BUILD=${GDC_FOR_BUILD-gdc}
1346   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1347   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1348   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1349   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1350   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1351   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1352 else
1353   AR_FOR_BUILD="\$(AR)"
1354   AS_FOR_BUILD="\$(AS)"
1355   CC_FOR_BUILD="\$(CC)"
1356   CXX_FOR_BUILD="\$(CXX)"
1357   DSYMUTIL_FOR_BUILD="\$(DSYMUTIL)"
1358   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1359   GOC_FOR_BUILD="\$(GOC)"
1360   GDC_FOR_BUILD="\$(GDC)"
1361   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1362   LD_FOR_BUILD="\$(LD)"
1363   NM_FOR_BUILD="\$(NM)"
1364   RANLIB_FOR_BUILD="\$(RANLIB)"
1365   WINDRES_FOR_BUILD="\$(WINDRES)"
1366   WINDMC_FOR_BUILD="\$(WINDMC)"
1367 fi
1368
1369 AC_PROG_CC_C99
1370 AC_PROG_CXX
1371
1372 # We must set the default linker to the linker used by gcc for the correct
1373 # operation of libtool.  If LD is not defined and we are using gcc, try to
1374 # set the LD default to the ld used by gcc.
1375 if test -z "$LD"; then
1376   if test "$GCC" = yes; then
1377     case $build in
1378     *-*-mingw*)
1379       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1380     *)
1381       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1382     esac
1383     case $gcc_prog_ld in
1384     # Accept absolute paths.
1385     [[\\/]* | [A-Za-z]:[\\/]*)]
1386       LD="$gcc_prog_ld" ;;
1387     esac
1388   fi
1389 fi
1390
1391 # Check whether -static-libstdc++ -static-libgcc is supported.
1392 have_static_libs=no
1393 if test "$GCC" = yes; then
1394   saved_LDFLAGS="$LDFLAGS"
1395
1396   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1397   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1398   AC_LANG_PUSH(C++)
1399   AC_LINK_IFELSE([AC_LANG_SOURCE([
1400 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1401 #error -static-libstdc++ not implemented
1402 #endif
1403 int main() {}])],
1404     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1405     [AC_MSG_RESULT([no])])
1406   AC_LANG_POP(C++)
1407
1408   LDFLAGS="$saved_LDFLAGS"
1409 fi
1410
1411 ACX_PROG_GNAT
1412 ACX_PROG_GDC
1413 ACX_PROG_CMP_IGNORE_INITIAL
1414
1415 AC_ARG_ENABLE([bootstrap],
1416 [AS_HELP_STRING([--enable-bootstrap],
1417                 [enable bootstrapping @<:@yes if native build@:>@])],,
1418 enable_bootstrap=default)
1419
1420 # Issue errors and warnings for invalid/strange bootstrap combinations.
1421 if test -r $srcdir/gcc/configure; then
1422   have_compiler=yes
1423 else
1424   have_compiler=no
1425 fi
1426
1427 case "$have_compiler:$host:$target:$enable_bootstrap" in
1428   *:*:*:no) ;;
1429
1430   # Default behavior.  Enable bootstrap if we have a compiler
1431   # and we are in a native configuration.
1432   yes:$build:$build:default)
1433     enable_bootstrap=yes ;;
1434
1435   *:*:*:default)
1436     enable_bootstrap=no ;;
1437
1438   # We have a compiler and we are in a native configuration, bootstrap is ok
1439   yes:$build:$build:yes)
1440     ;;
1441
1442   # Other configurations, but we have a compiler.  Assume the user knows
1443   # what he's doing.
1444   yes:*:*:yes)
1445     AC_MSG_WARN([trying to bootstrap a cross compiler])
1446     ;;
1447
1448   # No compiler: if they passed --enable-bootstrap explicitly, fail
1449   no:*:*:yes)
1450     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1451
1452   # Fail if wrong command line
1453   *)
1454     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1455     ;;
1456 esac
1457
1458 # When bootstrapping with GCC, build stage 1 in C++11 mode to ensure that a
1459 # C++11 compiler can still start the bootstrap.  Otherwise, if building GCC,
1460 # require C++11 (or higher).
1461 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1462   CXX="$CXX -std=c++11"
1463 elif test "$have_compiler" = yes; then
1464   AX_CXX_COMPILE_STDCXX(11)
1465
1466   if test "${build}" != "${host}"; then
1467     AX_CXX_COMPILE_STDCXX(11, [], [], [_FOR_BUILD])
1468   fi
1469 fi
1470
1471 AC_ARG_ENABLE([pgo-build],
1472 [AS_HELP_STRING([--enable-pgo-build[[=lto]]],
1473                 [enable the PGO build])],
1474 [enable_pgo_build=$enableval],
1475 [enable_pgo_build=no])
1476
1477 # Issue errors and warnings for invalid/strange PGO build combinations.
1478 case "$have_compiler:$host:$target:$enable_pgo_build" in
1479   *:*:*:no) ;;
1480
1481   # Allow the PGO build only if we aren't building a compiler and
1482   # we are in a native configuration.
1483   no:$build:$build:yes | no:$build:$build:lto) ;;
1484
1485   # Disallow the PGO bootstrap if we are building a compiler.
1486   yes:*:*:yes | yes:*:*:lto)
1487     AC_MSG_ERROR([cannot perform the PGO bootstrap when building a compiler]) ;;
1488
1489   *)
1490     AC_MSG_ERROR([invalid option for --enable-pgo-build])
1491     ;;
1492 esac
1493
1494 if test "$enable_pgo_build" != "no"; then
1495   AC_MSG_CHECKING([whether the compiler supports -fprofile-generate])
1496   old_CFLAGS="$CFLAGS"
1497   PGO_BUILD_GEN_CFLAGS="-fprofile-generate"
1498   CFLAGS="$CFLAGS $PGO_BUILD_CFLAGS"
1499   AC_COMPILE_IFELSE([AC_LANG_SOURCE([int foo;])],,
1500                     [PGO_BUILD_GEN_CFLAGS=])
1501   CFLAGS="$old_CFLAGS"
1502   if test -n "$PGO_BUILD_GEN_CFLAGS"; then
1503     AC_MSG_RESULT([yes])
1504     PGO_BUILD_USE_CFLAGS="-fprofile-use"
1505   else
1506     AC_MSG_RESULT([no])
1507     AC_MSG_ERROR([cannot perform the PGO build without -fprofile-generate])
1508   fi
1509
1510   if test "$enable_pgo_build" = "lto"; then
1511     AC_MSG_CHECKING([whether the compiler supports -flto=jobserver -ffat-lto-objects])
1512     old_CFLAGS="$CFLAGS"
1513     PGO_BUILD_LTO_CFLAGS="-flto=jobserver -ffat-lto-objects"
1514     CFLAGS="$CFLAGS $PGO_BUILD_LTO_CFLAGS"
1515     AC_COMPILE_IFELSE([AC_LANG_SOURCE([int foo;])],,
1516                       [PGO_BUILD_LTO_CFLAGS=])
1517     CFLAGS="$old_CFLAGS"
1518     if test -n "$PGO_BUILD_LTO_CFLAGS"; then
1519       AC_MSG_RESULT([yes])
1520     else
1521       AC_MSG_RESULT([no])
1522       AC_MSG_WARN([LTO is disabled for the PGO build])
1523     fi
1524   fi
1525 fi
1526 AC_SUBST(PGO_BUILD_GEN_CFLAGS)
1527 AC_SUBST(PGO_BUILD_USE_CFLAGS)
1528 AC_SUBST(PGO_BUILD_LTO_CFLAGS)
1529
1530 # Used for setting $lt_cv_objdir
1531 _LT_CHECK_OBJDIR
1532
1533 # Check for GMP, MPFR and MPC
1534 require_gmp=no
1535 require_mpc=no
1536 if test -d ${srcdir}/gcc ; then
1537   require_gmp=yes
1538   require_mpc=yes
1539 fi
1540 if test -d ${srcdir}/gdb ; then
1541   if test "x$enable_gdb" != xno; then
1542    require_gmp=yes
1543   fi
1544 fi
1545
1546 gmplibs="-lmpfr -lgmp"
1547 if test x"$require_mpc" = "xyes" ; then
1548   gmplibs="-lmpc $gmplibs"
1549 fi
1550 gmpinc=
1551 have_gmp=no
1552
1553 # Specify a location for mpc
1554 # check for this first so it ends up on the link line before mpfr.
1555 AC_ARG_WITH(mpc,
1556 [AS_HELP_STRING([--with-mpc=PATH],
1557                 [specify prefix directory for installed MPC package.
1558                  Equivalent to --with-mpc-include=PATH/include
1559                  plus --with-mpc-lib=PATH/lib])])
1560 AC_ARG_WITH(mpc-include,
1561 [AS_HELP_STRING([--with-mpc-include=PATH],
1562                 [specify directory for installed MPC include files])])
1563 AC_ARG_WITH(mpc-lib,
1564 [AS_HELP_STRING([--with-mpc-lib=PATH],
1565                 [specify directory for the installed MPC library])])
1566
1567 if test "x$with_mpc" != x; then
1568   gmplibs="-L$with_mpc/lib $gmplibs"
1569   gmpinc="-I$with_mpc/include $gmpinc"
1570 fi
1571 if test "x$with_mpc_include" != x; then
1572   gmpinc="-I$with_mpc_include $gmpinc"
1573 fi
1574 if test "x$with_mpc_lib" != x; then
1575   gmplibs="-L$with_mpc_lib $gmplibs"
1576 fi
1577 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1578   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1579   gmpinc='-I$$s/mpc/src '"$gmpinc"
1580   # Do not test the mpc version.  Assume that it is sufficient, since
1581   # it is in the source tree, and the library has not been built yet
1582   # but it would be included on the link line in the version check below
1583   # hence making the test fail.
1584   have_gmp=yes
1585 fi
1586
1587 # Specify a location for mpfr
1588 # check for this first so it ends up on the link line before gmp.
1589 AC_ARG_WITH(mpfr,
1590 [AS_HELP_STRING([--with-mpfr=PATH],
1591                 [specify prefix directory for installed MPFR package.
1592                  Equivalent to --with-mpfr-include=PATH/include
1593                  plus --with-mpfr-lib=PATH/lib])])
1594 AC_ARG_WITH(mpfr-include,
1595 [AS_HELP_STRING([--with-mpfr-include=PATH],
1596                 [specify directory for installed MPFR include files])])
1597 AC_ARG_WITH(mpfr-lib,
1598 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1599                 [specify directory for the installed MPFR library])])
1600
1601 if test "x$with_mpfr" != x; then
1602   gmplibs="-L$with_mpfr/lib $gmplibs"
1603   gmpinc="-I$with_mpfr/include $gmpinc"
1604 fi
1605 if test "x$with_mpfr_include" != x; then
1606   gmpinc="-I$with_mpfr_include $gmpinc"
1607 fi
1608 if test "x$with_mpfr_lib" != x; then
1609   gmplibs="-L$with_mpfr_lib $gmplibs"
1610 fi
1611 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1612   # MPFR v3.1.0 moved the sources into a src sub-directory.
1613   if ! test -d ${srcdir}/mpfr/src; then
1614     AC_MSG_ERROR([dnl
1615 Building GCC with MPFR in the source tree is only handled for MPFR 3.1.0+.])
1616   fi
1617   gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1618   gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1619   extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1620   # Do not test the mpfr version.  Assume that it is sufficient, since
1621   # it is in the source tree, and the library has not been built yet
1622   # but it would be included on the link line in the version check below
1623   # hence making the test fail.
1624   have_gmp=yes
1625 fi
1626
1627 # Specify a location for gmp
1628 AC_ARG_WITH(gmp,
1629 [AS_HELP_STRING([--with-gmp=PATH],
1630                 [specify prefix directory for the installed GMP package.
1631                  Equivalent to --with-gmp-include=PATH/include
1632                  plus --with-gmp-lib=PATH/lib])])
1633 AC_ARG_WITH(gmp-include,
1634 [AS_HELP_STRING([--with-gmp-include=PATH],
1635                 [specify directory for installed GMP include files])])
1636 AC_ARG_WITH(gmp-lib,
1637 [AS_HELP_STRING([--with-gmp-lib=PATH],
1638                 [specify directory for the installed GMP library])])
1639
1640
1641 if test "x$with_gmp" != x; then
1642   gmplibs="-L$with_gmp/lib $gmplibs"
1643   gmpinc="-I$with_gmp/include $gmpinc"
1644 fi
1645 if test "x$with_gmp_include" != x; then
1646   gmpinc="-I$with_gmp_include $gmpinc"
1647 fi
1648 if test "x$with_gmp_lib" != x; then
1649   gmplibs="-L$with_gmp_lib $gmplibs"
1650 fi
1651 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1652   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1653   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1654   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1655   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1656   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1657   # Do not test the gmp version.  Assume that it is sufficient, since
1658   # it is in the source tree, and the library has not been built yet
1659   # but it would be included on the link line in the version check below
1660   # hence making the test fail.
1661   have_gmp=yes
1662 fi
1663
1664 if test "x$require_gmp" = xyes && test "x$have_gmp" = xno; then
1665   have_gmp=yes
1666   saved_CFLAGS="$CFLAGS"
1667   CFLAGS="$CFLAGS $gmpinc"
1668   # Check for the recommended and required versions of GMP.
1669   AC_MSG_CHECKING([for the correct version of gmp.h])
1670   AC_TRY_COMPILE([#include "gmp.h"],[
1671   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1672   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1673   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1674   choke me
1675   #endif
1676   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1677   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1678   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1679   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1680   choke me
1681   #endif
1682   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1683    [AC_MSG_RESULT([no]); have_gmp=no])
1684
1685   # If we have GMP, check the MPFR version.
1686   if test x"$have_gmp" = xyes; then
1687     # Check for the recommended and required versions of MPFR.
1688     AC_MSG_CHECKING([for the correct version of mpfr.h])
1689     AC_TRY_COMPILE([#include <gmp.h>
1690     #include <mpfr.h>],[
1691     #if MPFR_VERSION < MPFR_VERSION_NUM(3,1,0)
1692     choke me
1693     #endif
1694     ], [AC_TRY_COMPILE([#include <gmp.h>
1695     #include <mpfr.h>],[
1696     #if MPFR_VERSION < MPFR_VERSION_NUM(3,1,6)
1697     choke me
1698     #endif
1699     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1700      [AC_MSG_RESULT([no]); have_gmp=no])
1701   fi
1702
1703   # Check for the MPC header version.
1704   if test "x$require_mpc" = xyes && test x"$have_gmp" = xyes ; then
1705     # Check for the recommended and required versions of MPC.
1706     AC_MSG_CHECKING([for the correct version of mpc.h])
1707     AC_TRY_COMPILE([#include <mpc.h>],[
1708     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1709     choke me
1710     #endif
1711     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1712     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1713     choke me
1714     #endif
1715     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1716      [AC_MSG_RESULT([no]); have_gmp=no])
1717   fi
1718
1719   # Now check the MPFR library.
1720   if test x"$have_gmp" = xyes; then
1721     saved_LIBS="$LIBS"
1722     LIBS="$LIBS $gmplibs"
1723     AC_MSG_CHECKING([for the correct version of the gmp/mpfr libraries])
1724     AC_TRY_LINK([#include <mpfr.h>],[
1725     mpfr_t n;
1726     mpfr_t x;
1727     int t;
1728     mpfr_init (n);
1729     mpfr_init (x);
1730     mpfr_atan2 (n, n, x, MPFR_RNDN);
1731     mpfr_erfc (n, x, MPFR_RNDN);
1732     mpfr_subnormalize (x, t, MPFR_RNDN);
1733     mpfr_clear(n);
1734     mpfr_clear(x);
1735     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1736     LIBS="$saved_LIBS"
1737   fi
1738
1739   # Now check the MPC library
1740   if test "x$require_mpc" = xyes && test x"$have_gmp" = xyes; then
1741     saved_LIBS="$LIBS"
1742     LIBS="$LIBS $gmplibs"
1743     AC_MSG_CHECKING([for the correct version of the mpc libraries])
1744     AC_TRY_LINK([#include <mpc.h>],[
1745     mpc_t c;
1746     mpc_init2 (c, 53);
1747     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1748     mpc_cosh (c, c, MPC_RNDNN);
1749     mpc_pow (c, c, c, MPC_RNDNN);
1750     mpc_acosh (c, c, MPC_RNDNN);
1751     mpc_clear (c);
1752     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1753     LIBS="$saved_LIBS"
1754   fi
1755
1756   CFLAGS="$saved_CFLAGS"
1757
1758 # The library versions listed in the error message below should match
1759 # the HARD-minimums enforced above.
1760   if test x$have_gmp != xyes; then
1761     if test -d ${srcdir}/gcc ; then
1762       AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 3.1.0+ and MPC 0.8.0+.
1763 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1764 their locations.  Source code for these libraries can be found at
1765 their respective hosting sites as well as at
1766 https://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1767 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1768 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1769 make sure that you have installed both the libraries and the header
1770 files.  They may be located in separate packages.])
1771     else
1772       AC_MSG_ERROR([Building GDB requires GMP 4.2+, and MPFR 3.1.0+.
1773 Try the --with-gmp and/or --with-mpfr options to specify
1774 their locations.  If you obtained GMP and/or MPFR from a vendor
1775 distribution package, make sure that you have installed both the libraries
1776 and the header files.  They may be located in separate packages.])
1777     fi
1778   fi
1779 fi
1780
1781 # Flags needed for both GMP, MPFR and/or MPC.
1782 AC_SUBST(gmplibs)
1783 AC_SUBST(gmpinc)
1784 AC_SUBST(extra_mpfr_configure_flags)
1785 AC_SUBST(extra_mpc_gmp_configure_flags)
1786 AC_SUBST(extra_mpc_mpfr_configure_flags)
1787 AC_SUBST(extra_isl_gmp_configure_flags)
1788
1789 # Libraries to use for stage1 or when not bootstrapping.
1790 AC_ARG_WITH(stage1-libs,
1791 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1792 [if test "$withval" = "no" -o "$withval" = "yes"; then
1793    stage1_libs=
1794  else
1795    stage1_libs=$withval
1796  fi],
1797 [stage1_libs=])
1798 AC_SUBST(stage1_libs)
1799
1800 # Whether or not to use -static-libstdc++ and -static-libgcc.  The
1801 # default is yes if gcc is being built; no otherwise.  The reason for
1802 # this default is that gdb is sometimes linked against GNU Source
1803 # Highlight, which is a shared library that uses C++ exceptions.  In
1804 # this case, -static-libstdc++ will cause crashes.
1805 AC_ARG_WITH(static-standard-libraries,
1806 [AS_HELP_STRING([--with-static-standard-libraries],
1807                 [use -static-libstdc++ and -static-libgcc (default=auto)])],
1808 [], [with_static_standard_libraries=auto])
1809 if test "$with_static_standard_libraries" = auto; then
1810   with_static_standard_libraries=$have_compiler
1811 fi
1812
1813 # Linker flags to use for stage1 or when not bootstrapping.
1814 AC_ARG_WITH(stage1-ldflags,
1815 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1816 [if test "$withval" = "no" -o "$withval" = "yes"; then
1817    stage1_ldflags=
1818  else
1819    stage1_ldflags=$withval
1820  fi],
1821 [stage1_ldflags=
1822  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1823  # if supported.  But if the user explicitly specified the libraries to use,
1824  # trust that they are doing what they want.
1825  if test "$with_static_standard_libraries" = yes -a "$stage1_libs" = "" \
1826      -a "$have_static_libs" = yes; then
1827    stage1_ldflags="-static-libstdc++ -static-libgcc"
1828  fi])
1829 AC_SUBST(stage1_ldflags)
1830
1831 # Libraries to use for stage2 and later builds.
1832 AC_ARG_WITH(boot-libs,
1833 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1834 [if test "$withval" = "no" -o "$withval" = "yes"; then
1835    poststage1_libs=
1836  else
1837    poststage1_libs=$withval
1838  fi],
1839 [poststage1_libs=])
1840 AC_SUBST(poststage1_libs)
1841
1842 # Linker flags to use for stage2 and later builds.
1843 AC_ARG_WITH(boot-ldflags,
1844 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1845                 [linker flags for stage2 and later])],
1846 [if test "$withval" = "no" -o "$withval" = "yes"; then
1847    poststage1_ldflags=
1848  else
1849    poststage1_ldflags=$withval
1850  fi],
1851 [poststage1_ldflags=
1852  # In stages 2 and 3, default to linking libstdc++ and libgcc
1853  # statically.  But if the user explicitly specified the libraries to
1854  # use, trust that they are doing what they want.
1855  if test "$poststage1_libs" = ""; then
1856    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1857  fi])
1858 AC_SUBST(poststage1_ldflags)
1859
1860 # GCC GRAPHITE dependency isl.
1861 # Basic setup is inlined here, actual checks are in config/isl.m4
1862
1863 AC_ARG_WITH(isl,
1864   [AS_HELP_STRING(
1865    [--with-isl=PATH],
1866    [Specify prefix directory for the installed isl package.
1867     Equivalent to --with-isl-include=PATH/include
1868     plus --with-isl-lib=PATH/lib])])
1869
1870 # Treat --without-isl as a request to disable
1871 # GRAPHITE support and skip all following checks.
1872 if test "x$with_isl" != "xno"; then
1873   # Check for isl
1874   dnl Provide configure switches and initialize islinc & isllibs
1875   dnl with user input.
1876   ISL_INIT_FLAGS
1877   dnl The versions of isl that work for Graphite
1878   ISL_CHECK_VERSION()
1879   dnl Only execute fail-action, if isl has been requested.
1880   ISL_IF_FAILED([
1881     AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1882 fi
1883
1884 # If the isl check failed, disable builds of in-tree variant of isl
1885 if test "x$with_isl" = xno ||
1886    test "x$gcc_cv_isl" = xno; then
1887   noconfigdirs="$noconfigdirs isl"
1888   islinc=
1889 fi
1890
1891 AC_SUBST(isllibs)
1892 AC_SUBST(islinc)
1893
1894 # Check for LTO support.
1895 AC_ARG_ENABLE(lto,
1896 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1897 enable_lto=$enableval,
1898 enable_lto=yes; default_enable_lto=yes)
1899
1900 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1901   build_lto_plugin=yes
1902 ],[if test x"$default_enable_lto" = x"yes" ; then
1903     case $target in
1904       *-apple-darwin[[912]]* | *-cygwin* | *-mingw* | *djgpp*) ;;
1905       # On other non-ELF platforms, LTO has yet to be validated.
1906       *) enable_lto=no ;;
1907     esac
1908   else
1909   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1910   # It would also be nice to check the binutils support, but we don't
1911   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1912   # warn during gcc/ subconfigure; unless you're bootstrapping with
1913   # -flto it won't be needed until after installation anyway.
1914     case $target in
1915       *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1916       *) if test x"$enable_lto" = x"yes"; then
1917         AC_MSG_ERROR([LTO support is not enabled for this target.])
1918         fi
1919       ;;
1920     esac
1921   fi
1922   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1923   # Build it unless LTO was explicitly disabled.
1924   case $target in
1925     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1926     *) ;;
1927   esac
1928 ])
1929
1930 AC_ARG_ENABLE(linker-plugin-configure-flags,
1931   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1932     [additional flags for configuring linker plugins @<:@none@:>@])],
1933   extra_linker_plugin_configure_flags=$enableval,
1934   extra_linker_plugin_configure_flags=)
1935 AC_SUBST(extra_linker_plugin_configure_flags)
1936 AC_ARG_ENABLE(linker-plugin-flags,
1937   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1938     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1939   extra_linker_plugin_flags=$enableval,
1940   extra_linker_plugin_flags=)
1941 AC_SUBST(extra_linker_plugin_flags)
1942
1943 # Handle --enable-host-pie
1944 # If host PIE executables are the default (or must be forced on) for some host,
1945 # we must pass that configuration to the gcc directory.
1946 gcc_host_pie=
1947 AC_ARG_ENABLE(host-pie,
1948 [AS_HELP_STRING([--enable-host-pie],
1949                 [build position independent host executables])],
1950 [host_pie=$enableval
1951  case $host in
1952    *-*-darwin2*)
1953      if test x$host_pie != xyes ; then
1954        # for Darwin20+ this is required.
1955        AC_MSG_WARN([PIE executables are required for the configured host, host-pie setting ignored.])
1956        host_pie=yes
1957        gcc_host_pie=--enable-host-pie
1958      fi ;;
1959   *) ;;
1960  esac],
1961 [case $host in
1962   *-*-darwin2*)
1963     # Default to PIE (mandatory for aarch64).
1964     host_pie=yes
1965     gcc_host_pie=--enable-host-pie
1966     ;;
1967   *) host_pie=no ;;
1968  esac])
1969
1970 AC_SUBST(host_pie)
1971 AC_SUBST(gcc_host_pie)
1972
1973 # Enable --enable-host-shared.
1974 # Checked early to determine whether jit is an 'all' language
1975 AC_ARG_ENABLE(host-shared,
1976 [AS_HELP_STRING([--enable-host-shared],
1977                 [build host code as shared libraries])],
1978 [host_shared=$enableval
1979  case $host in
1980    x86_64-*-darwin* | aarch64-*-darwin*)
1981      if test x$host_shared != xyes ; then
1982        # PIC is the default, and actually cannot be switched off.
1983        AC_MSG_WARN([PIC code is required for the configured host; host-shared setting ignored.])
1984        host_shared=yes
1985      fi ;;
1986    *-*-darwin*)
1987      if test x$host_pie = xyes -a x$host_shared != xyes ; then
1988        AC_MSG_WARN([PIC code is required for PIE host executables host-shared setting ignored.])
1989        host_shared=yes
1990      fi ;;
1991   *) ;;
1992  esac],
1993 [case $host in
1994   # 64B x86_64 and Aarch64 Darwin default to PIC.
1995   x86_64-*-darwin* | aarch64-*-darwin*) host_shared=yes ;;
1996   # 32B and powerpc64 Darwin must use PIC to link PIE exes.
1997   *-*-darwin*) host_shared=$host_pie ;;
1998   *) host_shared=no;;
1999  esac])
2000
2001 AC_SUBST(host_shared)
2002
2003 if test x$host_shared = xyes; then
2004   case $host in
2005     *-*-darwin*)
2006       # Since host shared is the default for 64b Darwin, and also enabled for
2007       # host_pie, ensure that we present the PIE flag when host_pie is active.
2008       if test x$host_pie = xyes; then
2009         PICFLAG=-fPIE
2010       fi
2011       ;;
2012     *)
2013       PICFLAG=-fPIC
2014       ;;
2015   esac
2016 elif test x$host_pie = xyes; then
2017   PICFLAG=-fPIE
2018 else
2019   PICFLAG=
2020 fi
2021
2022 AC_SUBST(PICFLAG)
2023
2024 # If we are building PIC/PIE host executables, and we are building dependent
2025 # libs (e.g. GMP) in-tree those libs need to be configured to generate PIC
2026 # code.
2027 host_libs_picflag=
2028 if test "$host_shared" = "yes" -o "$host_pie" = "yes"; then
2029 host_libs_picflag='--with-pic'
2030 fi
2031 AC_SUBST(host_libs_picflag)
2032
2033 # By default, C and C++ are the only stage 1 languages.
2034 stage1_languages=,c,
2035
2036 # Target libraries that we bootstrap.
2037 bootstrap_target_libs=,target-libgcc,
2038
2039 # Figure out what language subdirectories are present.
2040 # Look if the user specified --enable-languages="..."; if not, use
2041 # the environment variable $LANGUAGES if defined. $LANGUAGES might
2042 # go away some day.
2043 # NB:  embedded tabs in this IF block -- do not untabify
2044 if test -d ${srcdir}/gcc; then
2045   if test x"${enable_languages+set}" != xset; then
2046     if test x"${LANGUAGES+set}" = xset; then
2047       enable_languages="${LANGUAGES}"
2048         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
2049     else
2050       enable_languages=default
2051     fi
2052   else
2053     if test x"${enable_languages}" = x ||
2054        test x"${enable_languages}" = xyes;
2055        then
2056       echo configure.ac: --enable-languages needs at least one language argument 1>&2
2057       exit 1
2058     fi
2059   fi
2060   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
2061
2062   # 'f95' is the old name for the 'fortran' language. We issue a warning
2063   # and make the substitution.
2064   case ,${enable_languages}, in
2065     *,f95,*)
2066       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
2067       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
2068       ;;
2069   esac
2070
2071   # If bootstrapping, C++ must be enabled.
2072   case ",$enable_languages,:$enable_bootstrap" in
2073     *,c++,*:*) ;;
2074     *:yes)
2075       if test -f ${srcdir}/gcc/cp/config-lang.in; then
2076         enable_languages="${enable_languages},c++"
2077       else
2078         AC_MSG_ERROR([bootstrapping requires c++ sources])
2079       fi
2080       ;;
2081   esac
2082
2083   # First scan to see if an enabled language requires some other language.
2084   # We assume that a given config-lang.in will list all the language
2085   # front ends it requires, even if some are required indirectly.
2086   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
2087     case ${lang_frag} in
2088       ..) ;;
2089       # The odd quoting in the next line works around
2090       # an apparent bug in bash 1.12 on linux.
2091       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
2092       *)
2093         # From the config-lang.in, get $language, $lang_requires, and
2094         # $lang_requires_boot_languages.
2095         language=
2096         lang_requires=
2097         lang_requires_boot_languages=
2098         # set srcdir during sourcing lang_frag to the gcc dir.
2099         # Sadly overriding srcdir on the . line doesn't work in plain sh as it
2100         # polutes this shell
2101         saved_srcdir=${srcdir}
2102         srcdir=${srcdir}/gcc . ${lang_frag}
2103         srcdir=${saved_srcdir}
2104         for other in ${lang_requires} ${lang_requires_boot_languages}; do
2105           case ,${enable_languages}, in
2106             *,$other,*) ;;
2107             *,default,*) ;;
2108             *,all,*) ;;
2109             *,$language,*)
2110               echo " \`$other' language required by \`$language'; enabling" 1>&2
2111               enable_languages="${enable_languages},${other}"
2112               ;;
2113           esac
2114         done
2115         for other in ${lang_requires_boot_languages} ; do
2116           if test "$other" != "c"; then
2117             case ,${enable_stage1_languages}, in
2118               *,$other,*) ;;
2119               *,default,*) ;;
2120               *,all,*) ;;
2121               *)
2122                 case ,${enable_languages}, in
2123                   *,$language,*)
2124                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
2125                     enable_stage1_languages="$enable_stage1_languages,${other}"
2126                     ;;
2127                 esac
2128                 ;;
2129             esac
2130           fi
2131         done
2132         ;;
2133     esac
2134   done
2135
2136   new_enable_languages=,c,
2137
2138   # If LTO is enabled, add the LTO front end.
2139   if test "$enable_lto" = "yes" ; then
2140     case ,${enable_languages}, in
2141       *,lto,*) ;;
2142       *) enable_languages="${enable_languages},lto" ;;
2143     esac
2144     if test "${build_lto_plugin}" = "yes" ; then
2145       configdirs="$configdirs lto-plugin"
2146     fi
2147   fi
2148
2149   # If we're building an offloading compiler, add the LTO front end.
2150   if test x"$enable_as_accelerator_for" != x ; then
2151     case ,${enable_languages}, in
2152       *,lto,*) ;;
2153       *) enable_languages="${enable_languages},lto" ;;
2154     esac
2155   fi
2156
2157   missing_languages=`echo ",$enable_languages," | sed -e s/,default,/,/ -e s/,all,/,/ -e s/,c,/,/ `
2158   potential_languages=,c,
2159
2160   enabled_target_libs=
2161   disabled_target_libs=
2162
2163   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
2164     case ${lang_frag} in
2165       ..) ;;
2166       # The odd quoting in the next line works around
2167       # an apparent bug in bash 1.12 on linux.
2168       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
2169       *)
2170         # From the config-lang.in, get $language, $target_libs,
2171         # $lang_dirs, $boot_language, and $build_by_default
2172         language=
2173         target_libs=
2174         lang_dirs=
2175         subdir_requires=
2176         boot_language=no
2177         build_by_default=yes
2178         # set srcdir during sourcing.  See above about save & restore
2179         saved_srcdir=${srcdir}
2180         srcdir=${srcdir}/gcc . ${lang_frag}
2181         srcdir=${saved_srcdir}
2182         if test x${language} = x; then
2183           echo "${lang_frag} doesn't set \$language." 1>&2
2184           exit 1
2185         fi
2186
2187         if test "$language" = "c++"; then
2188           boot_language=yes
2189         fi
2190
2191         add_this_lang=no
2192         # C is always enabled, so no need to add it again
2193         if test "$language" != "c"; then
2194           case ,${enable_languages}, in
2195             *,${language},*)
2196               # Language was explicitly selected; include it
2197               add_this_lang=yes
2198               ;;
2199             *,all,*)
2200               # All languages are enabled
2201               add_this_lang=all
2202               ;;
2203             *,default,*)
2204               # 'default' was selected, select it if it is a default language
2205               add_this_lang=${build_by_default}
2206               ;;
2207           esac
2208         fi
2209
2210         # Disable languages that need other directories if these aren't available.
2211         for i in $subdir_requires; do
2212           test -f "$srcdir/gcc/$i/config-lang.in" && continue
2213           case ${add_this_lang} in
2214             yes)
2215               # Specifically requested language; tell them.
2216               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
2217               ;;
2218             all)
2219               AC_MSG_WARN([The gcc/$i directory contains parts of $language but is missing])
2220               add_this_lang=unsupported
2221               ;;
2222             *)
2223               # Silently disable.
2224               add_this_lang=unsupported
2225               ;;
2226           esac
2227         done
2228
2229         # Disable Ada if no preexisting GNAT is available.
2230         case ${add_this_lang}:${language}:${have_gnat} in
2231           yes:ada:no)
2232             # Specifically requested language; tell them.
2233             AC_MSG_ERROR([GNAT is required to build $language])
2234             ;;
2235           all:ada:no)
2236             AC_MSG_WARN([GNAT is required to build $language])
2237             add_this_lang=unsupported
2238             ;;
2239           *:ada:no)
2240             # Silently disable.
2241             add_this_lang=unsupported
2242             ;;
2243         esac
2244
2245         # Disable D if no preexisting GDC is available.
2246         case ${add_this_lang}:${language}:${have_gdc} in
2247           yes:d:no)
2248             # Specifically requested language; tell them.
2249             AC_MSG_ERROR([GDC is required to build $language])
2250            ;;
2251           all:d:no)
2252             AC_MSG_WARN([GDC is required to build $language])
2253             add_this_lang=unsupported
2254             ;;
2255           *:d:no)
2256             # Silently disable.
2257             add_this_lang=unsupported
2258             ;;
2259         esac
2260
2261         # Disable jit if -enable-host-shared not specified
2262         # but not if building for Mingw. All code in Windows
2263         # is position independent code (PIC).
2264         case $target in
2265           *mingw*) ;;
2266           *)
2267           case ${add_this_lang}:${language}:${host_shared} in
2268             yes:jit:no)
2269                    # PR jit/64780: explicitly specify --enable-host-shared
2270             AC_MSG_ERROR([
2271 Enabling language "jit" requires --enable-host-shared.
2272
2273 --enable-host-shared typically slows the rest of the compiler down by
2274 a few %, so you must explicitly enable it.
2275
2276 If you want to build both the jit and the regular compiler, it is often
2277 best to do this via two separate configure/builds, in separate
2278 directories, to avoid imposing the performance cost of
2279 --enable-host-shared on the regular compiler.])
2280                     ;;
2281             all:jit:no)
2282               AC_MSG_WARN([--enable-host-shared required to build $language])
2283               add_this_lang=unsupported
2284               ;;
2285             *:jit:no)
2286               # Silently disable.
2287               add_this_lang=unsupported
2288               ;;
2289                 esac
2290           ;;
2291         esac
2292
2293         # Disable a language that is unsupported by the target.
2294         case "${add_this_lang}: $unsupported_languages " in
2295           no:*) ;;
2296           unsupported:*) ;;
2297           *:*" $language "*)
2298             AC_MSG_WARN([${language} not supported for this target])
2299             add_this_lang=unsupported
2300             ;;
2301         esac
2302
2303         case $add_this_lang in
2304           unsupported)
2305             # Remove language-dependent dirs.
2306             disabled_target_libs="$disabled_target_libs $target_libs"
2307             noconfigdirs="$noconfigdirs $lang_dirs"
2308             ;;
2309           no)
2310             # Remove language-dependent dirs; still show language as supported.
2311             disabled_target_libs="$disabled_target_libs $target_libs"
2312             noconfigdirs="$noconfigdirs $lang_dirs"
2313             potential_languages="${potential_languages}${language},"
2314             ;;
2315           all|yes)
2316             new_enable_languages="${new_enable_languages}${language},"
2317             potential_languages="${potential_languages}${language},"
2318             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2319             enabled_target_libs="$enabled_target_libs $target_libs"
2320             case "${boot_language}:,$enable_stage1_languages," in
2321               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2322                 # Add to (comma-separated) list of stage 1 languages.
2323                 case ",$stage1_languages," in
2324                   *,$language,* | ,yes, | ,all,) ;;
2325                   *) stage1_languages="${stage1_languages}${language}," ;;
2326                 esac
2327                 # We need to bootstrap any supporting libraries.
2328                 bootstrap_target_libs=`echo "${bootstrap_target_libs}${target_libs}," | sed "s/ /,/g"`
2329                 ;;
2330             esac
2331             ;;
2332         esac
2333         ;;
2334     esac
2335   done
2336
2337   # Add target libraries which are only needed for disabled languages
2338   # to noconfigdirs.
2339   if test -n "$disabled_target_libs"; then
2340     for dir in $disabled_target_libs; do
2341       case " $enabled_target_libs " in
2342       *" ${dir} "*) ;;
2343       *) noconfigdirs="$noconfigdirs $dir" ;;
2344       esac
2345     done
2346   fi
2347
2348   AC_ARG_ENABLE(stage1-languages,
2349   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2350                   [choose additional languages to build during
2351                   stage1.  Mostly useful for compiler development])],
2352   [case ,${enable_stage1_languages}, in
2353     ,no,|,,)
2354       # Set it to something that will have no effect in the loop below
2355       enable_stage1_languages=c ;;
2356     ,yes,)
2357       enable_stage1_languages=`echo $new_enable_languages | \
2358         sed -e "s/^,//" -e "s/,$//" ` ;;
2359     *,all,*)
2360       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2361         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2362   esac
2363
2364   # Add "good" languages from enable_stage1_languages to stage1_languages,
2365   # while "bad" languages go in missing_languages.  Leave no duplicates.
2366   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2367     case $potential_languages in
2368       *,$i,*)
2369         case $stage1_languages in
2370           *,$i,*) ;;
2371           *) stage1_languages="$stage1_languages$i," ;;
2372         esac ;;
2373       *)
2374         case $missing_languages in
2375           *,$i,*) ;;
2376           *) missing_languages="$missing_languages$i," ;;
2377         esac ;;
2378      esac
2379   done])
2380
2381   # Remove leading/trailing commas that were added for simplicity
2382   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2383   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2384   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2385   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2386
2387   if test "x$missing_languages" != x; then
2388     AC_MSG_ERROR([
2389 The following requested languages could not be built: ${missing_languages}
2390 Supported languages are: ${potential_languages}])
2391   fi
2392   if test "x$new_enable_languages" != "x$enable_languages"; then
2393     echo The following languages will be built: ${new_enable_languages}
2394     enable_languages="$new_enable_languages"
2395   fi
2396
2397   AC_SUBST(stage1_languages)
2398   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2399 fi
2400
2401 # Handle --disable-<component> generically.
2402 for dir in $configdirs $build_configdirs $target_configdirs ; do
2403   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2404   varname=`echo $dirname | sed -e s/+/_/g`
2405   if eval test x\${enable_${varname}} "=" xno ; then
2406     noconfigdirs="$noconfigdirs $dir"
2407   fi
2408 done
2409
2410 # Check for Boehm's garbage collector
2411 AC_ARG_ENABLE(objc-gc,
2412 [AS_HELP_STRING([--enable-objc-gc],
2413                 [enable use of Boehm's garbage collector with the
2414                  GNU Objective-C runtime])])
2415 AC_ARG_WITH([target-bdw-gc],
2416 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
2417                 [specify prefix directory for installed bdw-gc package.
2418                  Equivalent to --with-target-bdw-gc-include=PATH/include
2419                  plus --with-target-bdw-gc-lib=PATH/lib])])
2420 AC_ARG_WITH([target-bdw-gc-include],
2421 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
2422                 [specify directories for installed bdw-gc include files])])
2423 AC_ARG_WITH([target-bdw-gc-lib],
2424 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
2425                 [specify directories for installed bdw-gc library])])
2426
2427 case ,${enable_languages},:${enable_objc_gc} in *,objc,*:yes|*,objc,*:auto)
2428   AC_MSG_CHECKING([for bdw garbage collector])
2429   if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
2430     dnl no bdw-gw options, assume default locations
2431     AC_MSG_RESULT([using bdw-gc in default locations])
2432   else
2433     dnl bdw-gw options, first error checking, complete checking in libobjc
2434     if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
2435       AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
2436     elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
2437       AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
2438     else
2439       AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
2440     fi
2441   fi
2442 esac
2443
2444 # Disable libitm, libsanitizer, libvtv if we're not building C++
2445 case ,${enable_languages}, in
2446   *,c++,*)
2447     # Disable libitm, libsanitizer if we're not building libstdc++
2448     case "${noconfigdirs}" in
2449       *target-libstdc++-v3*)
2450         noconfigdirs="$noconfigdirs target-libitm target-libsanitizer"
2451         ;;
2452       *) ;;
2453     esac
2454     ;;
2455   *)
2456     noconfigdirs="$noconfigdirs target-libitm target-libsanitizer target-libvtv"
2457     ;;
2458 esac
2459
2460 # If gcc/ is not in the source tree then we'll not be building a
2461 # target compiler, assume in that case we don't want to build any
2462 # target libraries or tools.
2463 #
2464 # This was added primarily for the benefit for binutils-gdb who reuse
2465 # this configure script, but don't always have target tools available.
2466 if test ! -d ${srcdir}/gcc; then
2467    skipdirs="${skipdirs} ${target_configdirs}"
2468 fi
2469
2470 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2471 # $build_configdirs and $target_configdirs.
2472 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2473
2474 notsupp=""
2475 for dir in . $skipdirs $noconfigdirs ; do
2476   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2477   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2478     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2479     if test -r $srcdir/$dirname/configure ; then
2480       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2481         true
2482       else
2483         notsupp="$notsupp $dir"
2484       fi
2485     fi
2486   fi
2487   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2488     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2489     if test -r $srcdir/$dirname/configure ; then
2490       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2491         true
2492       else
2493         notsupp="$notsupp $dir"
2494       fi
2495     fi
2496   fi
2497   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2498     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2499     if test -r $srcdir/$dirname/configure ; then
2500       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2501         true
2502       else
2503         notsupp="$notsupp $dir"
2504       fi
2505     fi
2506   fi
2507 done
2508
2509 # Quietly strip out all directories which aren't configurable in this tree.
2510 # This relies on all configurable subdirectories being autoconfiscated, which
2511 # is now the case.
2512 build_configdirs_all="$build_configdirs"
2513 build_configdirs=
2514 for i in ${build_configdirs_all} ; do
2515   j=`echo $i | sed -e s/build-//g`
2516   if test -f ${srcdir}/$j/configure ; then
2517     build_configdirs="${build_configdirs} $i"
2518   fi
2519 done
2520
2521 configdirs_all="$configdirs"
2522 configdirs=
2523 for i in ${configdirs_all} ; do
2524   if test -f ${srcdir}/$i/configure ; then
2525     configdirs="${configdirs} $i"
2526   fi
2527 done
2528
2529 target_configdirs_all="$target_configdirs"
2530 target_configdirs=
2531 for i in ${target_configdirs_all} ; do
2532   j=`echo $i | sed -e s/target-//g`
2533   if test -f ${srcdir}/$j/configure ; then
2534     target_configdirs="${target_configdirs} $i"
2535   fi
2536 done
2537
2538 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2539 # so we have to add it after the preceding checks.
2540 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2541 then
2542   case " $configdirs " in
2543     *" libiberty "*)
2544       # If we can build libiberty, we can also build libiberty-linker-plugin.
2545       configdirs="$configdirs libiberty-linker-plugin"
2546       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2547         --with-libiberty=../libiberty-linker-plugin";;
2548     *)
2549       AC_MSG_ERROR([libiberty missing]);;
2550   esac
2551 fi
2552
2553 # Sometimes we have special requirements for the host libiberty.
2554 extra_host_libiberty_configure_flags=
2555 case " $configdirs " in
2556   *" lto-plugin "* | *" libcc1 "* | *" gdbserver "*)
2557     # When these are to be built as shared libraries, the same applies to
2558     # libiberty.
2559     extra_host_libiberty_configure_flags=--enable-shared
2560     ;;
2561 esac
2562 AC_SUBST(extra_host_libiberty_configure_flags)
2563
2564 # Sometimes we have special requirements for the host zlib.
2565 extra_host_zlib_configure_flags=
2566 case " $configdirs " in
2567   *" bfd "*)
2568     # When bfd is to be built as a shared library, the same applies to
2569     # zlib.
2570     if test "$enable_shared" = "yes"; then
2571       extra_host_zlib_configure_flags=--enable-host-shared
2572     fi
2573     ;;
2574 esac
2575 AC_SUBST(extra_host_zlib_configure_flags)
2576
2577 # Produce a warning message for the subdirs we can't configure.
2578 # This isn't especially interesting in the Cygnus tree, but in the individual
2579 # FSF releases, it's important to let people know when their machine isn't
2580 # supported by the one or two programs in a package.
2581
2582 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2583   # If $appdirs is non-empty, at least one of those directories must still
2584   # be configured, or we error out.  (E.g., if the gas release supports a
2585   # specified target in some subdirs but not the gas subdir, we shouldn't
2586   # pretend that all is well.)
2587   if test -n "$appdirs" ; then
2588     for dir in $appdirs ; do
2589       if test -r $dir/Makefile.in ; then
2590         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2591           appdirs=""
2592           break
2593         fi
2594         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2595           appdirs=""
2596           break
2597         fi
2598       fi
2599     done
2600     if test -n "$appdirs" ; then
2601       echo "*** This configuration is not supported by this package." 1>&2
2602       exit 1
2603     fi
2604   fi
2605   # Okay, some application will build, or we don't care to check.  Still
2606   # notify of subdirs not getting built.
2607   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2608   echo "    ${notsupp}" 1>&2
2609   echo "    (Any other directories should still work fine.)" 1>&2
2610 fi
2611
2612 case "$host" in
2613   *msdosdjgpp*)
2614     enable_gdbtk=no ;;
2615 esac
2616
2617 # To find our prefix, in gcc_cv_tool_prefix.
2618 ACX_TOOL_DIRS
2619
2620 copy_dirs=
2621
2622 AC_ARG_WITH([build-sysroot],
2623   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2624                   [use sysroot as the system root during the build])],
2625   [if test x"$withval" != x ; then
2626      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2627    fi],
2628   [SYSROOT_CFLAGS_FOR_TARGET=])
2629 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2630
2631 AC_ARG_WITH([debug-prefix-map],
2632   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2633                   [map A to B, C to D ... in debug information])],
2634   [if test x"$withval" != x; then
2635      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2636      for debug_map in $withval; do
2637        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2638      done
2639    fi],
2640   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2641 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2642
2643 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2644 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2645 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2646 # We want to ensure that TARGET libraries (which we know are built with
2647 # gcc) are built with "-O2 -g", so include those options when setting
2648 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2649 if test "x$CFLAGS_FOR_TARGET" = x; then
2650   if test "x${is_cross_compiler}" = xyes; then
2651     CFLAGS_FOR_TARGET="-g -O2"
2652   else
2653     CFLAGS_FOR_TARGET=$CFLAGS
2654     case " $CFLAGS " in
2655       *" -O2 "*) ;;
2656       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2657     esac
2658     case " $CFLAGS " in
2659       *" -g "* | *" -g3 "*) ;;
2660       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2661     esac
2662   fi
2663 fi
2664 AC_SUBST(CFLAGS_FOR_TARGET)
2665
2666 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2667   if test "x${is_cross_compiler}" = xyes; then
2668     CXXFLAGS_FOR_TARGET="-g -O2"
2669   else
2670     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2671     case " $CXXFLAGS " in
2672       *" -O2 "*) ;;
2673       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2674     esac
2675     case " $CXXFLAGS " in
2676       *" -g "* | *" -g3 "*) ;;
2677       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2678     esac
2679   fi
2680 fi
2681 AC_SUBST(CXXFLAGS_FOR_TARGET)
2682
2683 AC_SUBST(LDFLAGS_FOR_TARGET)
2684
2685 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2686 # the named directory are copied to $(tooldir)/sys-include.
2687 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2688   if test x${is_cross_compiler} = xno ; then
2689     echo 1>&2 '***' --with-headers is only supported when cross compiling
2690     exit 1
2691   fi
2692   if test x"${with_headers}" != xyes ; then
2693     x=${gcc_cv_tool_prefix}
2694     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2695   fi
2696 fi
2697
2698 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2699 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2700 # are permitted.
2701 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2702   if test x${is_cross_compiler} = xno ; then
2703     echo 1>&2 '***' --with-libs is only supported when cross compiling
2704     exit 1
2705   fi
2706   if test x"${with_libs}" != xyes ; then
2707     # Copy the libraries in reverse order, so that files in the first named
2708     # library override files in subsequent libraries.
2709     x=${gcc_cv_tool_prefix}
2710     for l in ${with_libs}; do
2711       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2712     done
2713   fi
2714 fi
2715
2716 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2717 #
2718 # This is done by determining whether or not the appropriate directory
2719 # is available, and by checking whether or not specific configurations
2720 # have requested that this magic not happen.
2721 #
2722 # The command line options always override the explicit settings in
2723 # configure.ac, and the settings in configure.ac override this magic.
2724 #
2725 # If the default for a toolchain is to use GNU as and ld, and you don't
2726 # want to do that, then you should use the --without-gnu-as and
2727 # --without-gnu-ld options for the configure script.  Similarly, if
2728 # the default is to use the included zlib and you don't want to do that,
2729 # you should use the --with-system-zlib option for the configure script.
2730
2731 if test x${use_gnu_as} = x &&
2732    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2733   with_gnu_as=yes
2734   extra_host_args="$extra_host_args --with-gnu-as"
2735 fi
2736
2737 if test x${use_gnu_ld} = x &&
2738    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2739   with_gnu_ld=yes
2740   extra_host_args="$extra_host_args --with-gnu-ld"
2741 fi
2742
2743 if test x${use_included_zlib} = x &&
2744    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2745   :
2746 else
2747   with_system_zlib=yes
2748   extra_host_args="$extra_host_args --with-system-zlib"
2749 fi
2750
2751 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2752 # can detect this case.
2753
2754 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2755   with_newlib=yes
2756   extra_host_args="$extra_host_args --with-newlib"
2757 fi
2758
2759 # Handle ${copy_dirs}
2760 set fnord ${copy_dirs}
2761 shift
2762 while test $# != 0 ; do
2763   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2764     :
2765   else
2766     echo Copying $1 to $2
2767
2768     # Use the install script to create the directory and all required
2769     # parent directories.
2770     if test -d $2 ; then
2771       :
2772     else
2773       echo >config.temp
2774       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2775     fi
2776
2777     # Copy the directory, assuming we have tar.
2778     # FIXME: Should we use B in the second tar?  Not all systems support it.
2779     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2780
2781     # It is the responsibility of the user to correctly adjust all
2782     # symlinks.  If somebody can figure out how to handle them correctly
2783     # here, feel free to add the code.
2784
2785     echo $1 > $2/COPIED
2786   fi
2787   shift; shift
2788 done
2789
2790 # Determine a target-dependent exec_prefix that the installed
2791 # gcc will search in.  Keep this list sorted by triplet, with
2792 # the *-*-osname triplets last.
2793 md_exec_prefix=
2794 case "${target}" in
2795   i[[34567]]86-pc-msdosdjgpp*)
2796     md_exec_prefix=/dev/env/DJDIR/bin
2797     ;;
2798   *-*-hpux* | \
2799   *-*-nto-qnx* | \
2800   *-*-solaris2*)
2801     md_exec_prefix=/usr/ccs/bin
2802     ;;
2803 esac
2804
2805 extra_arflags_for_target=
2806 extra_nmflags_for_target=
2807 extra_ranlibflags_for_target=
2808 target_makefile_frag=/dev/null
2809 case "${target}" in
2810   spu-*-*)
2811     target_makefile_frag="config/mt-spu"
2812     ;;
2813   loongarch*-*linux* | loongarch*-*gnu*)
2814     target_makefile_frag="config/mt-loongarch-gnu"
2815     ;;
2816   loongarch*-*elf*)
2817     target_makefile_frag="config/mt-loongarch-elf"
2818     ;;
2819   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2820     target_makefile_frag="config/mt-sde"
2821     ;;
2822   mipsisa*-*-elfoabi*)
2823     target_makefile_frag="config/mt-mips-elfoabi"
2824     ;;
2825   mips*-*-*linux* | mips*-*-gnu*)
2826     target_makefile_frag="config/mt-mips-gnu"
2827     ;;
2828   nios2-*-elf*)
2829     target_makefile_frag="config/mt-nios2-elf"
2830     ;;
2831   *-*-linux-android*)
2832     target_makefile_frag="config/mt-android"
2833     ;;
2834   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2835     target_makefile_frag="config/mt-gnu"
2836     ;;
2837   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2838     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2839     # commands to handle both 32-bit and 64-bit objects.  These flags are
2840     # harmless if we're using GNU nm or ar.
2841     extra_arflags_for_target=" -X32_64"
2842     extra_nmflags_for_target=" -B -X32_64"
2843     ;;
2844 esac
2845
2846 alphaieee_frag=/dev/null
2847 case $target in
2848   alpha*-*-*)
2849     # This just makes sure to use the -mieee option to build target libs.
2850     # This should probably be set individually by each library.
2851     alphaieee_frag="config/mt-alphaieee"
2852     ;;
2853 esac
2854
2855 # If --enable-target-optspace always use -Os instead of -O2 to build
2856 # the target libraries, similarly if it is not specified, use -Os
2857 # on selected platforms.
2858 ospace_frag=/dev/null
2859 case "${enable_target_optspace}:${target}" in
2860   yes:*)
2861     ospace_frag="config/mt-ospace"
2862     ;;
2863   :d30v-*)
2864     ospace_frag="config/mt-d30v"
2865     ;;
2866   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2867     ospace_frag="config/mt-ospace"
2868     ;;
2869   no:* | :*)
2870     ;;
2871   *)
2872     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2873     ;;
2874 esac
2875
2876 # Some systems (e.g., one of the i386-aix systems the gas testers are
2877 # using) don't handle "\$" correctly, so don't use it here.
2878 tooldir='${exec_prefix}'/${target_noncanonical}
2879 build_tooldir=${tooldir}
2880
2881 # Create a .gdbinit file which runs the one in srcdir
2882 # and tells GDB to look there for source files.
2883
2884 if test -r ${srcdir}/.gdbinit ; then
2885   case ${srcdir} in
2886     .) ;;
2887     *) cat > ./.gdbinit <<EOF
2888 # ${NO_EDIT}
2889 dir ${srcdir}
2890 dir .
2891 source ${srcdir}/.gdbinit
2892 EOF
2893     ;;
2894   esac
2895 fi
2896
2897 # Make sure that the compiler is able to generate an executable.  If it
2898 # can't, we are probably in trouble.  We don't care whether we can run the
2899 # executable--we might be using a cross compiler--we only care whether it
2900 # can be created.  At this point the main configure script has set CC.
2901 we_are_ok=no
2902 echo "int main () { return 0; }" > conftest.c
2903 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2904 if test $? = 0 ; then
2905   if test -s conftest || test -s conftest.exe ; then
2906     we_are_ok=yes
2907   fi
2908 fi
2909 case $we_are_ok in
2910   no)
2911     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2912     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2913     rm -f conftest*
2914     exit 1
2915     ;;
2916 esac
2917 rm -f conftest*
2918
2919 # Decide which environment variable is used to find dynamic libraries.
2920 case "${host}" in
2921   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2922   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2923   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2924   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2925 esac
2926
2927 # On systems where the dynamic library environment variable is PATH,
2928 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2929 # built executables to PATH.
2930 if test "$RPATH_ENVVAR" = PATH; then
2931   GCC_SHLIB_SUBDIR=/shlib
2932 else
2933   GCC_SHLIB_SUBDIR=
2934 fi
2935
2936 # Adjust the toplevel makefile according to whether bootstrap was selected.
2937 case $enable_bootstrap in
2938   yes)
2939     bootstrap_suffix=bootstrap
2940     BUILD_CONFIG=bootstrap-debug
2941     ;;
2942   no)
2943     bootstrap_suffix=no-bootstrap
2944     BUILD_CONFIG=
2945     ;;
2946 esac
2947
2948 AC_MSG_CHECKING(for default BUILD_CONFIG)
2949
2950 AC_ARG_WITH([build-config],
2951   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2952                   [use config/NAME.mk build configuration])],
2953   [case $with_build_config in
2954    yes) with_build_config= ;;
2955    no) with_build_config= BUILD_CONFIG= ;;
2956    esac])
2957
2958 if test "x${with_build_config}" != x; then
2959   BUILD_CONFIG=$with_build_config
2960 else
2961   case $BUILD_CONFIG in
2962   bootstrap-debug)
2963     if echo "int f (void) { return 0; }" > conftest.c &&
2964        ${CC} -c conftest.c &&
2965        mv conftest.o conftest.o.g0 &&
2966        ${CC} -c -g conftest.c &&
2967        mv conftest.o conftest.o.g &&
2968        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2969       :
2970     else
2971       BUILD_CONFIG=
2972     fi
2973     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2974     ;;
2975   esac
2976 fi
2977 AC_MSG_RESULT($BUILD_CONFIG)
2978 AC_SUBST(BUILD_CONFIG)
2979
2980 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2981 AC_MSG_CHECKING([for --enable-vtable-verify])
2982 AC_ARG_ENABLE(vtable-verify,
2983 [AS_HELP_STRING([--enable-vtable-verify],
2984                 [Enable vtable verification feature])],
2985 [case "$enableval" in
2986  yes) enable_vtable_verify=yes ;;
2987  no)  enable_vtable_verify=no ;;
2988  *)   enable_vtable_verify=no;;
2989  esac],
2990 [enable_vtable_verify=no])
2991 AC_MSG_RESULT($enable_vtable_verify)
2992
2993 # Record target_configdirs and the configure arguments for target and
2994 # build configuration in Makefile.
2995 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2996 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2997 bootstrap_fixincludes=no
2998
2999 # If we are building libgomp, bootstrap it.
3000 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
3001   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
3002 fi
3003
3004 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
3005 # or bootstrap-ubsan, bootstrap it.
3006 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
3007   case "$BUILD_CONFIG" in
3008     *bootstrap-hwasan* | *bootstrap-asan* | *bootstrap-ubsan* )
3009       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
3010       bootstrap_fixincludes=yes
3011       ;;
3012   esac
3013 fi
3014
3015 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
3016 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
3017    test "$enable_vtable_verify" != no; then
3018   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
3019 fi
3020
3021 # If we are building libatomic and the list of enabled languages includes the
3022 # D frontend, bootstrap it.
3023 if echo " ${target_configdirs} " | grep " libatomic " > /dev/null 2>&1; then
3024   case ,${enable_languages}, in
3025     *,d,*)
3026       bootstrap_target_libs=${bootstrap_target_libs}target-libatomic,
3027       ;;
3028   esac
3029 fi
3030
3031 # Determine whether gdb needs tk/tcl or not.
3032 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
3033 # and in that case we want gdb to be built without tk.  Ugh!
3034 # In fact I believe gdb is the *only* package directly dependent on tk,
3035 # so we should be able to put the 'maybe's in unconditionally and
3036 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
3037 # 100% sure that that's safe though.
3038
3039 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
3040 case "$enable_gdbtk" in
3041   no)
3042     GDB_TK="" ;;
3043   yes)
3044     GDB_TK="${gdb_tk}" ;;
3045   *)
3046     # Only add the dependency on gdbtk when GDBtk is part of the gdb
3047     # distro.  Eventually someone will fix this and move Insight, nee
3048     # gdbtk to a separate directory.
3049     if test -d ${srcdir}/gdb/gdbtk ; then
3050       GDB_TK="${gdb_tk}"
3051     else
3052       GDB_TK=""
3053     fi
3054     ;;
3055 esac
3056 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
3057 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
3058
3059 # gdb and gdbserver depend on gnulib and gdbsupport, but as nothing
3060 # else does, only include them if one of these is built.  The Makefile
3061 # provides the ordering, so it's enough here to add to the list.
3062 case " ${configdirs} " in
3063   *\ gdb\ *)
3064     configdirs="${configdirs} gnulib gdbsupport"
3065     ;;
3066   *\ gdbserver\ *)
3067     configdirs="${configdirs} gnulib gdbsupport"
3068     ;;
3069   *\ sim\ *)
3070     configdirs="${configdirs} gnulib"
3071     ;;
3072 esac
3073
3074 # Strip out unwanted targets.
3075
3076 # While at that, we remove Makefiles if we were started for recursive
3077 # configuration, so that the top-level Makefile reconfigures them,
3078 # like we used to do when configure itself was recursive.
3079
3080 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
3081 # but now we're fixing up the Makefile ourselves with the additional
3082 # commands passed to AC_CONFIG_FILES.  Use separate variables
3083 # extrasub-{build,host,target} not because there is any reason to split
3084 # the substitutions up that way, but only to remain below the limit of
3085 # 99 commands in a script, for HP-UX sed.
3086
3087 # Do not nest @if/@endif or @unless/@endunless pairs, because
3088 # configure will not warn you at all.
3089
3090 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
3091   yes:yes:*\ gold\ *:*,c++,*) ;;
3092   yes:yes:*\ gold\ *:*)
3093     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
3094     ;;
3095 esac
3096
3097 extrasub_build=
3098 for module in ${build_configdirs} ; do
3099   if test -z "${no_recursion}" \
3100      && test -f ${build_subdir}/${module}/Makefile; then
3101     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
3102     rm -f ${build_subdir}/${module}/Makefile
3103   fi
3104   extrasub_build="$extrasub_build
3105 /^@if build-$module\$/d
3106 /^@endif build-$module\$/d
3107 /^@unless build-$module\$/,/^@endunless build-$module\$/d
3108 /^@if build-$module-$bootstrap_suffix\$/d
3109 /^@endif build-$module-$bootstrap_suffix\$/d
3110 /^@unless build-$module-$bootstrap_suffix\$/,/^@endunless build-$module-$bootstrap_suffix\$/d"
3111 done
3112 extrasub_host=
3113 for module in ${configdirs} ; do
3114   if test -z "${no_recursion}"; then
3115     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
3116       if test -f ${file}; then
3117         echo 1>&2 "*** removing ${file} to force reconfigure"
3118         rm -f ${file}
3119       fi
3120     done
3121   fi
3122   case ${module},${bootstrap_fixincludes} in
3123     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
3124     *) host_bootstrap_suffix=$bootstrap_suffix ;;
3125   esac
3126   extrasub_host="$extrasub_host
3127 /^@if $module\$/d
3128 /^@endif $module\$/d
3129 /^@unless $module\$/,/^@endunless $module\$/d
3130 /^@if $module-$host_bootstrap_suffix\$/d
3131 /^@endif $module-$host_bootstrap_suffix\$/d
3132 /^@unless $module-$host_bootstrap_suffix\$/,/^@endunless $module-$host_bootstrap_suffix\$/d"
3133 done
3134 extrasub_target=
3135 for module in ${target_configdirs} ; do
3136   if test -z "${no_recursion}" \
3137      && test -f ${target_subdir}/${module}/Makefile; then
3138     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
3139     rm -f ${target_subdir}/${module}/Makefile
3140   fi
3141
3142   # We only bootstrap target libraries listed in bootstrap_target_libs.
3143   case $bootstrap_target_libs in
3144     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
3145     *) target_bootstrap_suffix=no-bootstrap ;;
3146   esac
3147
3148   extrasub_target="$extrasub_target
3149 /^@if target-$module\$/d
3150 /^@endif target-$module\$/d
3151 /^@unless target-$module\$/,/^@endunless target-$module\$/d
3152 /^@if target-$module-$target_bootstrap_suffix\$/d
3153 /^@endif target-$module-$target_bootstrap_suffix\$/d
3154 /^@unless target-$module-$target_bootstrap_suffix\$/,/^@endunless target-$module-$target_bootstrap_suffix\$/d"
3155 done
3156
3157 # Do the final fixup along with target modules.
3158 extrasub_target="$extrasub_target
3159 /^@if /,/^@endif /d
3160 /^@unless /d
3161 /^@endunless /d"
3162
3163 if test "$enable_pgo_build" != "no"; then
3164   extrasub_build="$extrasub_build
3165 /^@if pgo-build\$/d
3166 /^@endif pgo-build\$/d"
3167 fi
3168
3169 # Create the serialization dependencies.  This uses a temporary file.
3170
3171 AC_ARG_ENABLE([serial-configure],
3172 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
3173                 [force sequential configuration of
3174                  sub-packages for the host, target or build
3175                  machine, or all sub-packages])])
3176
3177 case ${enable_serial_configure} in
3178   yes)
3179     enable_serial_build_configure=yes
3180     enable_serial_host_configure=yes
3181     enable_serial_target_configure=yes
3182     ;;
3183 esac
3184
3185 # These force 'configure's to be done one at a time, to avoid problems
3186 # with contention over a shared config.cache.
3187 rm -f serdep.tmp
3188 if test "x${enable_serial_build_configure}" = xyes || test "x${enable_serial_host_configure}" = xyes || test "x${enable_serial_target_configure}" = xyes; then
3189 echo '# serdep.tmp' > serdep.tmp
3190 fi
3191 olditem=
3192 test "x${enable_serial_build_configure}" = xyes &&
3193 for item in ${build_configdirs} ; do
3194   case ${olditem} in
3195     "") ;;
3196     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
3197   esac
3198   olditem=${item}
3199 done
3200 olditem=
3201 test "x${enable_serial_host_configure}" = xyes &&
3202 for item in ${configdirs} ; do
3203   case ${olditem} in
3204     "") ;;
3205     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
3206   esac
3207   olditem=${item}
3208 done
3209 olditem=
3210 test "x${enable_serial_target_configure}" = xyes &&
3211 for item in ${target_configdirs} ; do
3212   case ${olditem} in
3213     "") ;;
3214     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
3215   esac
3216   olditem=${item}
3217 done
3218 serialization_dependencies=serdep.tmp
3219 AC_SUBST_FILE(serialization_dependencies)
3220
3221 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
3222 # target, nonopt, and variable assignments.  These are the ones we
3223 # might not want to pass down to subconfigures.  The exception being
3224 # --cache-file=/dev/null, which is used to turn off the use of cache
3225 # files altogether, and which should be passed on to subconfigures.
3226 # Also strip program-prefix, program-suffix, and program-transform-name,
3227 # so that we can pass down a consistent program-transform-name.
3228 baseargs=
3229 tbaseargs=
3230 keep_next=no
3231 skip_next=no
3232 eval "set -- $ac_configure_args"
3233 for ac_arg
3234 do
3235   if test X"$skip_next" = X"yes"; then
3236     skip_next=no
3237     continue
3238   fi
3239   if test X"$keep_next" = X"yes"; then
3240     case $ac_arg in
3241       *\'*)
3242         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3243     esac
3244     baseargs="$baseargs '$ac_arg'"
3245     tbaseargs="$tbaseargs '$ac_arg'"
3246     keep_next=no
3247     continue
3248   fi
3249
3250   # Handle separated arguments.  Based on the logic generated by
3251   # autoconf 2.59.
3252   case $ac_arg in
3253     *=* | --config-cache | -C | -disable-* | --disable-* \
3254       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
3255       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
3256       | -with-* | --with-* | -without-* | --without-* | --x)
3257       separate_arg=no
3258       ;;
3259     -*)
3260       separate_arg=yes
3261       ;;
3262     *)
3263       separate_arg=no
3264       ;;
3265   esac
3266
3267   skip_targ=no
3268   case $ac_arg in
3269 changequote(,)
3270   --with-* | --without-*)
3271     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
3272
3273     case $libopt in
3274     *[-_]include)
3275       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
3276       ;;
3277     *[-_]lib)
3278       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
3279       ;;
3280     *)
3281       lib=$libopt
3282       ;;
3283     esac
3284 changequote([,])
3285
3286     case $lib in
3287     mpc | mpfr | gmp | isl)
3288       # If we're processing --with-$lib, --with-$lib-include or
3289       # --with-$lib-lib, for one of the libs above, and target is
3290       # different from host, don't pass the current argument to any
3291       # target library's configure.
3292       if test x$is_cross_compiler = xyes; then
3293         skip_targ=yes
3294       fi
3295       ;;
3296     esac
3297     ;;
3298   esac
3299
3300   case "$ac_arg" in
3301     --cache-file=/dev/null | \
3302     -cache-file=/dev/null )
3303       # Handled here to avoid the test to skip args below.
3304       baseargs="$baseargs '$ac_arg'"
3305       tbaseargs="$tbaseargs '$ac_arg'"
3306       # Assert: $separate_arg should always be no.
3307       keep_next=$separate_arg
3308       ;;
3309     --no*)
3310       continue
3311       ;;
3312     --c* | \
3313     --sr* | \
3314     --ho* | \
3315     --bu* | \
3316     --t* | \
3317     --program-* | \
3318     -cache_file* | \
3319     -srcdir* | \
3320     -host* | \
3321     -build* | \
3322     -target* | \
3323     -program-prefix* | \
3324     -program-suffix* | \
3325     -program-transform-name* )
3326       skip_next=$separate_arg
3327       continue
3328       ;;
3329     -*)
3330       # An option.  Add it.
3331       case $ac_arg in
3332         *\'*)
3333           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3334       esac
3335       baseargs="$baseargs '$ac_arg'"
3336       if test X"$skip_targ" = Xno; then
3337         tbaseargs="$tbaseargs '$ac_arg'"
3338       fi
3339       keep_next=$separate_arg
3340       ;;
3341     *)
3342       # Either a variable assignment, or a nonopt (triplet).  Don't
3343       # pass it down; let the Makefile handle this.
3344       continue
3345       ;;
3346   esac
3347 done
3348 # Remove the initial space we just introduced and, as these will be
3349 # expanded by make, quote '$'.
3350 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3351
3352 # Add in --program-transform-name, after --program-prefix and
3353 # --program-suffix have been applied to it.  Autoconf has already
3354 # doubled dollar signs and backslashes in program_transform_name; we want
3355 # the backslashes un-doubled, and then the entire thing wrapped in single
3356 # quotes, because this will be expanded first by make and then by the shell.
3357 # Also, because we want to override the logic in subdir configure scripts to
3358 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3359 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3360 ${program_transform_name}
3361 EOF_SED
3362 gcc_transform_name=`cat conftestsed.out`
3363 rm -f conftestsed.out
3364 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3365 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3366 if test "$silent" = yes; then
3367   baseargs="$baseargs --silent"
3368   tbaseargs="$tbaseargs --silent"
3369 fi
3370
3371 baseargs="$baseargs --disable-option-checking"
3372 tbaseargs="$tbaseargs --disable-option-checking"
3373
3374 if test "$enable_year2038" = no; then
3375   baseargs="$baseargs --disable-year2038"
3376   tbaseargs="$tbaseargs --disable-year2038"
3377 fi
3378
3379 # Record and document user additions to sub configure arguments.
3380 AC_ARG_VAR([build_configargs],
3381            [additional configure arguments for build directories])
3382 AC_ARG_VAR([host_configargs],
3383            [additional configure arguments for host directories])
3384 AC_ARG_VAR([target_configargs],
3385            [additional configure arguments for target directories])
3386
3387 # For the build-side libraries, we just need to pretend we're native,
3388 # and not use the same cache file.  Multilibs are neither needed nor
3389 # desired.  We can't even use the same cache file for all build-side
3390 # libraries, as they're compiled differently; some with C, some with
3391 # C++ or with different feature-enabling options.
3392 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3393
3394 # For host modules, accept cache file option, or specification as blank.
3395 case "${cache_file}" in
3396 "") # empty
3397   cache_file_option="" ;;
3398 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3399   cache_file_option="--cache-file=${cache_file}" ;;
3400 *) # relative path
3401   cache_file_option="--cache-file=../${cache_file}" ;;
3402 esac
3403
3404 # Host dirs don't like to share a cache file either, horribly enough.
3405 # This seems to be due to autoconf 2.5x stupidity.
3406 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3407
3408 target_configargs="$target_configargs ${tbaseargs}"
3409
3410 # Passing a --with-cross-host argument lets the target libraries know
3411 # whether they are being built with a cross-compiler or being built
3412 # native.  However, it would be better to use other mechanisms to make the
3413 # sorts of decisions they want to make on this basis.  Please consider
3414 # this option to be deprecated.  FIXME.
3415 if test x${is_cross_compiler} = xyes ; then
3416   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3417 fi
3418
3419 # Special user-friendly check for native x86_64-linux build, if
3420 # multilib is not explicitly enabled.
3421 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3422   x86_64-*linux*:yes:$build:$build:)
3423     # Make sure we have a development environment that handles 32-bit
3424     dev64=no
3425     echo "int main () { return 0; }" > conftest.c
3426     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3427     if test $? = 0 ; then
3428       if test -s conftest || test -s conftest.exe ; then
3429         dev64=yes
3430       fi
3431     fi
3432     rm -f conftest*
3433     if test x${dev64} != xyes ; then
3434       AC_MSG_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.])
3435     fi
3436     ;;
3437 esac
3438
3439 # Default to --enable-multilib.
3440 if test x${enable_multilib} = x ; then
3441   target_configargs="--enable-multilib ${target_configargs}"
3442 fi
3443
3444 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3445 # changed from the earlier setting of with_newlib.
3446 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3447   target_configargs="--with-newlib ${target_configargs}"
3448 fi
3449
3450 # Different target subdirs use different values of certain variables
3451 # (notably CXX).  Worse, multilibs use *lots* of different values.
3452 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3453 # it doesn't automatically accept command-line overrides of them.
3454 # This means it's not safe for target subdirs to share a cache file,
3455 # which is disgusting, but there you have it.  Hopefully this can be
3456 # fixed in future.  It's still worthwhile to use a cache file for each
3457 # directory.  I think.
3458
3459 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3460 # We need to pass --target, as newer autoconf's requires consistency
3461 # for target_alias and gcc doesn't manage it consistently.
3462 target_configargs="--cache-file=./config.cache ${target_configargs}"
3463
3464 FLAGS_FOR_TARGET=
3465 case " $target_configdirs " in
3466  *" newlib "*)
3467   case " $target_configargs " in
3468   *" --with-newlib "*)
3469    case "$target" in
3470     *-cygwin*)
3471       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3472       ;;
3473    esac
3474
3475    # If we're not building GCC, don't discard standard headers.
3476    if test -d ${srcdir}/gcc; then
3477      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3478
3479      if test "${build}" != "${host}"; then
3480        # On Canadian crosses, CC_FOR_TARGET will have already been set
3481        # by `configure', so we won't have an opportunity to add -Bgcc/
3482        # to it.  This is right: we don't want to search that directory
3483        # for binaries, but we want the header files in there, so add
3484        # them explicitly.
3485        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3486
3487        # Someone might think of using the pre-installed headers on
3488        # Canadian crosses, in case the installed compiler is not fully
3489        # compatible with the compiler being built.  In this case, it
3490        # would be better to flag an error than risking having
3491        # incompatible object files being constructed.  We can't
3492        # guarantee that an error will be flagged, but let's hope the
3493        # compiler will do it, when presented with incompatible header
3494        # files.
3495      fi
3496    fi
3497
3498    case "${target}-${is_cross_compiler}" in
3499    i[[3456789]]86-*-linux*-no)
3500       # Here host == target, so we don't need to build gcc,
3501       # so we don't want to discard standard headers.
3502       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3503       ;;
3504    *)
3505       # If we're building newlib, use its generic headers last, but search
3506       # for any libc-related directories first (so make it the last -B
3507       # switch).
3508       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3509
3510       # If we're building libgloss, find the startup file, simulator library
3511       # and linker script.
3512       case " $target_configdirs " in
3513         *" libgloss "*)
3514         # Look for startup file, simulator library and maybe linker script.
3515         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3516         # Look for libnosys.a in case the target needs it.
3517         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3518         # Most targets have the linker script in the source directory.
3519         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3520         ;;
3521       esac
3522       ;;
3523    esac
3524    ;;
3525   esac
3526   ;;
3527 esac
3528
3529 case "$target" in
3530   x86_64-*mingw* | *-w64-mingw*)
3531   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3532   # however, use a symlink named 'mingw' in ${prefix} .
3533     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3534     ;;
3535   *-mingw*)
3536   # MinGW can't be handled as Cygwin above since it does not use newlib.
3537     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
3538     ;;
3539 esac
3540
3541 # Allow the user to override the flags for
3542 # our build compiler if desired.
3543 if test x"${build}" = x"${host}" ; then
3544   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3545   CPPFLAGS_FOR_BUILD=${CPPFLAGS_FOR_BUILD-${CPPFLAGS}}
3546   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3547   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3548 fi
3549
3550 # On Canadian crosses, we'll be searching the right directories for
3551 # the previously-installed cross compiler, so don't bother to add
3552 # flags for directories within the install tree of the compiler
3553 # being built; programs in there won't even run.
3554 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3555   # Search for pre-installed headers if nothing else fits.
3556   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3557 fi
3558
3559 if test "x${use_gnu_ld}" = x &&
3560    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3561   # Arrange for us to find uninstalled linker scripts.
3562   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3563 fi
3564
3565 # Search for other target-specific linker scripts and such.
3566 case "${target}" in
3567   mep*)
3568     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3569     ;;
3570   # The VxWorks support for shared libraries is getting in
3571   # incrementally.  Make sure it doesn't get activated implicitly:
3572   *vxworks*)
3573     if test "${enable_shared-unset}" = unset ; then
3574       enable_shared=no
3575       # So the build of libraries knows ...
3576       target_configargs="${target_configargs} --disable-shared"
3577       # So gcc knows ...
3578       host_configargs="${host_configargs} --disable-shared"
3579     fi
3580     ;;
3581 esac
3582
3583 # Makefile fragments.
3584 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3585 do
3586   eval fragval=\$$frag
3587   if test $fragval != /dev/null; then
3588     eval $frag=${srcdir}/$fragval
3589   fi
3590 done
3591 AC_SUBST_FILE(host_makefile_frag)
3592 AC_SUBST_FILE(target_makefile_frag)
3593 AC_SUBST_FILE(alphaieee_frag)
3594 AC_SUBST_FILE(ospace_frag)
3595
3596 # Miscellanea: directories, flags, etc.
3597 AC_SUBST(RPATH_ENVVAR)
3598 AC_SUBST(GCC_SHLIB_SUBDIR)
3599 AC_SUBST(tooldir)
3600 AC_SUBST(build_tooldir)
3601 AC_SUBST(CONFIGURE_GDB_TK)
3602 AC_SUBST(GDB_TK)
3603 AC_SUBST(INSTALL_GDB_TK)
3604
3605 # Build module lists & subconfigure args.
3606 AC_SUBST(build_configargs)
3607 AC_SUBST(build_configdirs)
3608
3609 # Host module lists & subconfigure args.
3610 AC_SUBST(host_configargs)
3611 AC_SUBST(configdirs)
3612 AC_SUBST(target_configdirs)
3613
3614 # Target module lists & subconfigure args.
3615 AC_SUBST(target_configargs)
3616
3617
3618 # Build tools.
3619 AC_SUBST(AR_FOR_BUILD)
3620 AC_SUBST(AS_FOR_BUILD)
3621 AC_SUBST(CC_FOR_BUILD)
3622 AC_SUBST(CFLAGS_FOR_BUILD)
3623 AC_SUBST(CPP_FOR_BUILD)
3624 AC_SUBST(CPPFLAGS_FOR_BUILD)
3625 AC_SUBST(CXXFLAGS_FOR_BUILD)
3626 AC_SUBST(CXX_FOR_BUILD)
3627 AC_SUBST(DLLTOOL_FOR_BUILD)
3628 AC_SUBST(DSYMUTIL_FOR_BUILD)
3629 AC_SUBST(GFORTRAN_FOR_BUILD)
3630 AC_SUBST(GOC_FOR_BUILD)
3631 AC_SUBST(GDC_FOR_BUILD)
3632 AC_SUBST(LDFLAGS_FOR_BUILD)
3633 AC_SUBST(LD_FOR_BUILD)
3634 AC_SUBST(NM_FOR_BUILD)
3635 AC_SUBST(RANLIB_FOR_BUILD)
3636 AC_SUBST(WINDMC_FOR_BUILD)
3637 AC_SUBST(WINDRES_FOR_BUILD)
3638
3639 # Generate default definitions for YACC, M4, LEX and other programs that run
3640 # on the build machine.  These are used if the Makefile can't locate these
3641 # programs in objdir.
3642 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3643
3644 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3645 case " $build_configdirs " in
3646   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3647 esac
3648
3649 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3650 case " $build_configdirs " in
3651   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3652 esac
3653
3654 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3655 case " $build_configdirs " in
3656   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3657 esac
3658
3659 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3660 case " $build_configdirs " in
3661   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3662   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3663 esac
3664
3665 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3666 case " $build_configdirs " in
3667   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3668 esac
3669
3670 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3671 case " $build_configdirs " in
3672   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3673   *)
3674 changequote(,)
3675     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3676     # higher, else we use the "missing" dummy.
3677     if ${MAKEINFO} --version \
3678        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3679       :
3680     else
3681       MAKEINFO="$MISSING makeinfo"
3682     fi
3683     ;;
3684 changequote([,])
3685 esac
3686
3687 # FIXME: expect and dejagnu may become build tools?
3688
3689 AC_CHECK_PROGS(EXPECT, expect, expect)
3690 case " $configdirs " in
3691   *" expect "*)
3692     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3693     ;;
3694 esac
3695
3696 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3697 case " $configdirs " in
3698   *" dejagnu "*)
3699     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3700     ;;
3701 esac
3702
3703
3704 # Host tools.
3705 NCN_STRICT_CHECK_TOOLS(AR, ar)
3706 NCN_STRICT_CHECK_TOOLS(AS, as)
3707 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3708 NCN_STRICT_CHECK_TOOLS(DSYMUTIL, dsymutil)
3709 NCN_STRICT_CHECK_TOOLS(LD, ld)
3710 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3711 NCN_STRICT_CHECK_TOOLS(NM, nm)
3712 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3713 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3714 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3715 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3716 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3717 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3718 NCN_STRICT_CHECK_TOOLS(OTOOL, otool)
3719 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3720 AC_SUBST(CC)
3721 AC_SUBST(CXX)
3722 AC_SUBST(CFLAGS)
3723 AC_SUBST(CXXFLAGS)
3724 AC_SUBST(GDC)
3725 AC_SUBST(GDCFLAGS)
3726 GDCFLAGS=${GDCFLAGS-${CFLAGS}}
3727 AC_SUBST(PKG_CONFIG_PATH)
3728
3729 GCC_PLUGIN_OPTION(PLUGIN_OPTION)
3730 AR_PLUGIN_OPTION=
3731 RANLIB_PLUGIN_OPTION=
3732 if test -n "$PLUGIN_OPTION"; then
3733   if $AR --help 2>&1 | grep -q "\--plugin"; then
3734     AR_PLUGIN_OPTION="$PLUGIN_OPTION"
3735   fi
3736   if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
3737     RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
3738   fi
3739 fi
3740 AC_SUBST(AR_PLUGIN_OPTION)
3741 AC_SUBST(RANLIB_PLUGIN_OPTION)
3742
3743 # Target tools.
3744 AC_ARG_WITH([build-time-tools],
3745   [AS_HELP_STRING([--with-build-time-tools=PATH],
3746                   [use given path to find target tools during the build])],
3747   [case x"$withval" in
3748      x/*) ;;
3749      *)
3750        with_build_time_tools=
3751        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3752        ;;
3753    esac],
3754   [with_build_time_tools=])
3755
3756 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3757 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3758 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3759 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3760 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3761 NCN_STRICT_CHECK_TARGET_TOOLS(GDC_FOR_TARGET, gdc)
3762 NCN_STRICT_CHECK_TARGET_TOOLS(GM2_FOR_TARGET, gm2)
3763
3764 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3765 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3766 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3767 ACX_CHECK_INSTALLED_TARGET_TOOL(DSYMUTIL_FOR_TARGET, dsymutil)
3768 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3769 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3770 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3771 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3772 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3773 ACX_CHECK_INSTALLED_TARGET_TOOL(OTOOL_FOR_TARGET, otool)
3774 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3775 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3776 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3777 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3778 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3779
3780 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3781
3782 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3783 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3784 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3785 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3786 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3787                 [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],
3788                 c++)
3789 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3790                 [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],
3791                 c++)
3792 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3793 GCC_TARGET_TOOL(dsymutil, DSYMUTIL_FOR_TARGET, DSYMUTIL)
3794 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3795 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3796                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3797 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3798                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3799 GCC_TARGET_TOOL(gdc, GDC_FOR_TARGET, GDC,
3800                 [gcc/gdc -B$$r/$(HOST_SUBDIR)/gcc/], d)
3801 GCC_TARGET_TOOL(gm2, GM2_FOR_TARGET, GM2,
3802                 [gcc/gm2 -B$$r/$(HOST_SUBDIR)/gcc/], m2)
3803 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3804 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3805 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3806 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3807 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3808 GCC_TARGET_TOOL(otool, OTOOL_FOR_TARGET, OTOOL)
3809 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3810 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3811 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3812 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3813 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3814
3815 AC_SUBST(FLAGS_FOR_TARGET)
3816 AC_SUBST(RAW_CXX_FOR_TARGET)
3817
3818 # Certain tools may need extra flags.
3819 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3820 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3821 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3822
3823 # When building target libraries, except in a Canadian cross, we use
3824 # the same toolchain as the compiler we just built.
3825 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3826 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3827 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3828 if test $host = $build; then
3829   case " $configdirs " in
3830     *" gcc "*)
3831       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3832       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3833       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3834       ;;
3835   esac
3836 fi
3837
3838 AC_SUBST(COMPILER_AS_FOR_TARGET)
3839 AC_SUBST(COMPILER_LD_FOR_TARGET)
3840 AC_SUBST(COMPILER_NM_FOR_TARGET)
3841
3842 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3843 AC_ARG_ENABLE(maintainer-mode,
3844 [AS_HELP_STRING([--enable-maintainer-mode],
3845                 [enable make rules and dependencies not useful
3846                  (and sometimes confusing) to the casual installer])],
3847       USE_MAINTAINER_MODE=$enableval,
3848       USE_MAINTAINER_MODE=no)
3849 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3850 AC_SUBST(MAINTAINER_MODE_TRUE)
3851 AC_SUBST(MAINTAINER_MODE_FALSE)
3852 if test "$USE_MAINTAINER_MODE" = yes; then
3853   MAINTAINER_MODE_TRUE=
3854   MAINTAINER_MODE_FALSE='#'
3855 else
3856   MAINTAINER_MODE_TRUE='#'
3857   MAINTAINER_MODE_FALSE=
3858 fi
3859 MAINT=$MAINTAINER_MODE_TRUE
3860 AC_SUBST(MAINT)dnl
3861
3862 # ---------------------
3863 # GCC bootstrap support
3864 # ---------------------
3865
3866 # Stage specific cflags for build.
3867 stage1_cflags="-g"
3868 case $build in
3869   vax-*-*)
3870     case ${GCC} in
3871       yes) stage1_cflags="-g -Wa,-J" ;;
3872       *) stage1_cflags="-g -J" ;;
3873     esac ;;
3874 esac
3875
3876 AC_SUBST(stage1_cflags)
3877
3878 # Enable --enable-checking in stage1 of the compiler.
3879 AC_ARG_ENABLE(stage1-checking,
3880 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3881                 [choose additional checking for stage1 of the compiler])],
3882 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3883 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3884   # For --disable-checking or implicit --enable-checking=release, avoid
3885   # setting --enable-checking=gc in the default stage1 checking for LTO
3886   # bootstraps.  See PR62077.
3887   case $BUILD_CONFIG in
3888     *lto*)
3889       stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
3890     *)
3891       stage1_checking=--enable-checking=yes,types;;
3892   esac
3893   if test "x$enable_checking" = x && \
3894      test -d ${srcdir}/gcc && \
3895      test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3896     stage1_checking=--enable-checking=yes,types,extra
3897   fi
3898 else
3899   stage1_checking=--enable-checking=$enable_checking,types
3900 fi])
3901 AC_SUBST(stage1_checking)
3902
3903 # Enable -Werror in bootstrap stage2 and later.
3904 AC_ARG_ENABLE(werror,
3905 [AS_HELP_STRING([--enable-werror],
3906                 [enable -Werror in bootstrap stage2 and later])],
3907 [
3908 case ${enable_werror} in
3909   yes) stage2_werror_flag="--enable-werror-always" ;;
3910   *) stage2_werror_flag="" ;;
3911 esac
3912 ],
3913 [
3914 if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3915   case $BUILD_CONFIG in
3916   bootstrap-debug)
3917       stage2_werror_flag="--enable-werror-always" ;;
3918   "")
3919       stage2_werror_flag="--enable-werror-always" ;;
3920   esac
3921 fi
3922 ])
3923
3924 AC_SUBST(stage2_werror_flag)
3925
3926 # Specify what files to not compare during bootstrap.
3927
3928 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3929 compare_exclusions="$compare_exclusions | gcc/m2/gm2-compiler-boot/M2Version*"
3930 compare_exclusions="$compare_exclusions | gcc/m2/gm2-compiler-boot/SYSTEM*"
3931 compare_exclusions="$compare_exclusions | gcc/m2/gm2version*"
3932 case "$target" in
3933   hppa*64*-*-hpux*) ;;
3934   powerpc*-ibm-aix*) compare_exclusions="$compare_exclusions | *libgomp*\$(objext)" ;;
3935 esac
3936 AC_SUBST(compare_exclusions)
3937
3938 AC_CONFIG_FILES([Makefile],
3939   [sed "$extrasub_build" Makefile |
3940    sed "$extrasub_host" |
3941    sed "$extrasub_target" > mf$$
3942    mv -f mf$$ Makefile],
3943   [extrasub_build="$extrasub_build"
3944    extrasub_host="$extrasub_host"
3945    extrasub_target="$extrasub_target"])
3946 AC_OUTPUT