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 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([libtool.m4])
  27 m4_include([ltoptions.m4])
  28 m4_include([ltsugar.m4])
  29 m4_include([ltversion.m4])
  30 m4_include([lt~obsolete.m4])
  31 m4_include([config/isl.m4])
  32
  33 AC_INIT(move-if-change)
  34 AC_DISABLE_OPTION_CHECKING
  35
  36 progname=$0
  37 # if PWD already has a value, it is probably wrong.
  38 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  39
  40 # Export original configure arguments for use by sub-configures.
  41 # Quote arguments with shell meta charatcers.
  42 TOPLEVEL_CONFIGURE_ARGUMENTS=
  43 set -- "$progname" "$@"
  44 for ac_arg
  45 do
  46   case "$ac_arg" in
  47   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  48     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  49     # if the argument is of the form -foo=baz, quote the baz part only
  50     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  51   *) ;;
  52   esac
  53   # Add the quoted argument to the list.
  54   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  55 done
  56 if test "$silent" = yes; then
  57   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  58 fi
  59 # Remove the initial space we just introduced and, as these will be
  60 # expanded by make, quote '$'.
  61 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  62 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  63
  64 # Find the build, host, and target systems.
  65 ACX_NONCANONICAL_BUILD
  66 ACX_NONCANONICAL_HOST
  67 ACX_NONCANONICAL_TARGET
  68
  69 dnl Autoconf 2.5x and later will set a default program prefix if
  70 dnl --target was used, even if it was the same as --host.  Disable
  71 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  72 dnl to take effect.
  73 test "$host_noncanonical" = "$target_noncanonical" &&
  74   test "$program_prefix$program_suffix$program_transform_name" = \
  75     NONENONEs,x,x, &&
  76   program_transform_name=s,y,y,
  77
  78 AC_CANONICAL_SYSTEM
  79 AC_ARG_PROGRAM
  80
  81 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  82 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  83
  84 # Get 'install' or 'install-sh' and its variants.
  85 AC_PROG_INSTALL
  86 ACX_PROG_LN
  87 AC_PROG_LN_S
  88 AC_PROG_SED
  89 AC_PROG_AWK
  90
  91 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  92
  93 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  94 # a relative path.
  95 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  96   INSTALL="${srcpwd}/install-sh -c"
  97 fi
  98
  99 # Set srcdir to "." if that's what it is.
 100 # This is important for multilib support.
 101 pwd=`${PWDCMD-pwd}`
 102 if test "${pwd}" = "${srcpwd}" ; then
 103   srcdir=.
 104 fi
 105
 106 topsrcdir=$srcpwd
 107
 108 extra_host_args=
 109
 110 ### To add a new directory to the tree, first choose whether it is a target
 111 ### or a host dependent tool.  Then put it into the appropriate list
 112 ### (library or tools, host or target), doing a dependency sort.
 113
 114 # Subdirs will be configured in the order listed in build_configdirs,
 115 # configdirs, or target_configdirs; see the serialization section below.
 116
 117 # Dependency sorting is only needed when *configuration* must be done in
 118 # a particular order.  In all cases a dependency should be specified in
 119 # the Makefile, whether or not it's implicitly specified here.
 120
 121 # Double entries in build_configdirs, configdirs, or target_configdirs may
 122 # cause circular dependencies and break everything horribly.
 123
 124 # these library is used by various programs built for the build
 125 # environment
 126 #
 127 build_libs="build-libiberty build-libcpp"
 128
 129 # these tools are built for the build environment
 130 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 131
 132 # these libraries are used by various programs built for the host environment
 133 #f
 134 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl libelf libiconv libctf"
 135
 136 # these tools are built for the host environment
 137 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 138 # know that we are building the simulator.
 139 # binutils, gas and ld appear in that order because it makes sense to run
 140 # "make check" in that particular order.
 141 # If --enable-gold is used, "gold" may replace "ld".
 142 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
 143
 144 # these libraries are built for the target environment, and are built after
 145 # the host libraries and the host tools (which may be a cross compiler)
 146 # Note that libiberty is not a target library.
 147 target_libraries="target-libgcc \
 148                 target-libbacktrace \
 149                 target-libgloss \
 150                 target-newlib \
 151                 target-libgomp \
 152                 target-liboffloadmic \
 153                 target-libhsail-rt \
 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-libgo"
 166
 167 # these tools are built using the target libraries, and are intended to
 168 # run only in the target environment
 169 #
 170 # note: any program that *uses* libraries that are in the "target_libraries"
 171 # list belongs in this list.
 172 #
 173 target_tools="target-rda"
 174
 175 ################################################################################
 176
 177 ## All tools belong in one of the four categories, and are assigned above
 178 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 179 ## is important because configure will choke if they ever get through.
 180 ## ${configdirs} is directories we build using the host tools.
 181 ## ${target_configdirs} is directories we build using the target tools.
 182 configdirs=`echo ${host_libs} ${host_tools}`
 183 target_configdirs=`echo ${target_libraries} ${target_tools}`
 184 build_configdirs=`echo ${build_libs} ${build_tools}`
 185
 186 m4_divert_text([PARSE_ARGS],
 187 [case $srcdir in
 188   *" "*)
 189 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 190     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 191 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 192     ;;
 193 esac
 194 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 195 ])
 196
 197 ################################################################################
 198
 199 srcname="gnu development package"
 200
 201 # This gets set non-empty for some net releases of packages.
 202 appdirs=""
 203
 204 # Define is_cross_compiler to save on calls to 'test'.
 205 is_cross_compiler=
 206 if test x"${host}" = x"${target}" ; then
 207   is_cross_compiler=no
 208 else
 209   is_cross_compiler=yes
 210 fi
 211
 212 # Find the build and target subdir names.
 213 GCC_TOPLEV_SUBDIRS
 214 # Be sure to cover against remnants of an in-tree build.
 215 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 216   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 217 Use a pristine source tree when building in a separate tree])
 218 fi
 219
 220 # Skipdirs are removed silently.
 221 skipdirs=
 222 # Noconfigdirs are removed loudly.
 223 noconfigdirs=""
 224
 225 use_gnu_ld=
 226 # Make sure we don't let GNU ld be added if we didn't want it.
 227 if test x$with_gnu_ld = xno ; then
 228   use_gnu_ld=no
 229   noconfigdirs="$noconfigdirs ld gold"
 230 fi
 231
 232 use_gnu_as=
 233 # Make sure we don't let GNU as be added if we didn't want it.
 234 if test x$with_gnu_as = xno ; then
 235   use_gnu_as=no
 236   noconfigdirs="$noconfigdirs gas"
 237 fi
 238
 239 use_included_zlib=
 240 AC_ARG_WITH(system-zlib,
 241 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
 242 # Make sure we don't let ZLIB be added if we didn't want it.
 243 if test x$with_system_zlib = xyes ; then
 244   use_included_zlib=no
 245   noconfigdirs="$noconfigdirs zlib"
 246 fi
 247
 248 # Don't compile the bundled readline/libreadline.a if --with-system-readline
 249 # is provided.
 250 if test x$with_system_readline = xyes ; then
 251   noconfigdirs="$noconfigdirs readline"
 252 fi
 253
 254 # some tools are so dependent upon X11 that if we're not building with X,
 255 # it's not even worth trying to configure, much less build, that tool.
 256
 257 case ${with_x} in
 258   yes | "") ;; # the default value for this tree is that X11 is available
 259   no)
 260     skipdirs="${skipdirs} tk itcl libgui"
 261     # We won't be able to build gdbtk without X.
 262     enable_gdbtk=no
 263     ;;
 264   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 265 esac
 266
 267 # Some are only suitable for cross toolchains.
 268 # Remove these if host=target.
 269 cross_only="target-libgloss target-newlib target-opcodes"
 270
 271 case $is_cross_compiler in
 272   no) skipdirs="${skipdirs} ${cross_only}" ;;
 273 esac
 274
 275 # If both --with-headers and --with-libs are specified, default to
 276 # --without-newlib.
 277 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 278    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 279   if test x"${with_newlib}" = x ; then
 280     with_newlib=no
 281   fi
 282 fi
 283
 284 # Recognize --with-newlib/--without-newlib.
 285 case ${with_newlib} in
 286   no) skipdirs="${skipdirs} target-newlib" ;;
 287   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 288 esac
 289
 290 AC_ARG_ENABLE(as-accelerator-for,
 291 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 292                 [build as offload target compiler.
 293                 Specify offload host triple by ARG])])
 294
 295 AC_ARG_ENABLE(offload-targets,
 296 [AS_HELP_STRING([--enable-offload-targets=LIST],
 297                 [enable offloading to devices from comma-separated LIST of
 298                 TARGET[=DIR]. Use optional path to find offload target compiler
 299                 during the build])],
 300 [
 301   if test x"$enable_offload_targets" = x; then
 302     AC_MSG_ERROR([no offload targets specified])
 303   fi
 304 ], [enable_offload_targets=])
 305
 306 # Handle --enable-gold, --enable-ld.
 307 # --disable-gold [--enable-ld]
 308 #     Build only ld.  Default option.
 309 # --enable-gold [--enable-ld]
 310 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 311 #     as "ld.bfd" and "ld".
 312 # --enable-gold=default [--enable-ld]
 313 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 314 #     install ld as "ld.bfd".
 315 # --enable-gold[=default] --disable-ld
 316 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 317 # --enable-gold --enable-ld=default
 318 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 319 #     and ld.bfd).
 320 #     In other words, ld is default
 321 # --enable-gold=default --enable-ld=default
 322 #     Error.
 323
 324 default_ld=
 325 AC_ARG_ENABLE(gold,
 326 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 327                 [build gold @<:@ARG={default,yes,no}@:>@])],
 328 ENABLE_GOLD=$enableval,
 329 ENABLE_GOLD=no)
 330 case "${ENABLE_GOLD}" in
 331   yes|default)
 332     # Check for ELF target.
 333     is_elf=no
 334     case "${target}" in
 335       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 336       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 337       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 338       | *-*-solaris2* | *-*-nto* | *-*-nacl*)
 339         case "${target}" in
 340           *-*-linux*aout* | *-*-linux*oldld*)
 341             ;;
 342           *)
 343             is_elf=yes
 344             ;;
 345         esac
 346     esac
 347
 348     if test "$is_elf" = "yes"; then
 349       # Check for target supported by gold.
 350       case "${target}" in
 351         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 352         | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
 353           configdirs="$configdirs gold"
 354           if test x${ENABLE_GOLD} = xdefault; then
 355             default_ld=gold
 356           fi
 357           ENABLE_GOLD=yes
 358           ;;
 359       esac
 360     fi
 361     ;;
 362   no)
 363     ;;
 364   *)
 365     AC_MSG_ERROR([invalid --enable-gold argument])
 366     ;;
 367 esac
 368
 369 AC_ARG_ENABLE(ld,
 370 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 371                 [build ld @<:@ARG={default,yes,no}@:>@])],
 372 ENABLE_LD=$enableval,
 373 ENABLE_LD=yes)
 374
 375 case "${ENABLE_LD}" in
 376   default)
 377     if test x${default_ld} != x; then
 378       AC_MSG_ERROR([either gold or ld can be the default ld])
 379     fi
 380     ;;
 381   yes)
 382     ;;
 383   no)
 384     if test x${ENABLE_GOLD} != xyes; then
 385       AC_MSG_WARN([neither ld nor gold are enabled])
 386     fi
 387     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 388     ;;
 389   *)
 390     AC_MSG_ERROR([invalid --enable-ld argument])
 391     ;;
 392 esac
 393
 394 # PR gas/19109
 395 # Decide the default method for compressing debug sections.
 396 # Provide a configure time option to override our default.
 397 AC_ARG_ENABLE(compressed_debug_sections,
 398 [AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
 399                 [Enable compressed debug sections for gas, gold or ld by
 400                  default])],
 401 [
 402   if test x"$enable_compressed_debug_sections" = xyes; then
 403     AC_MSG_ERROR([no program with compressed debug sections specified])
 404   fi
 405 ], [enable_compressed_debug_sections=])
 406
 407 # Configure extra directories which are host specific
 408
 409 case "${host}" in
 410   *-cygwin*)
 411     configdirs="$configdirs libtermcap" ;;
 412 esac
 413
 414 # A target can indicate whether a language isn't supported for some reason.
 415 # Only spaces may be used in this macro; not newlines or tabs.
 416 unsupported_languages=
 417
 418 # Remove more programs from consideration, based on the host or
 419 # target this usually means that a port of the program doesn't
 420 # exist yet.
 421
 422 case "${host}" in
 423   i[[3456789]]86-*-msdosdjgpp*)
 424     noconfigdirs="$noconfigdirs tcl tk itcl"
 425     ;;
 426 esac
 427
 428
 429 AC_ARG_ENABLE(libquadmath,
 430 AS_HELP_STRING([--disable-libquadmath],
 431   [do not build libquadmath directory]),
 432 ENABLE_LIBQUADMATH=$enableval,
 433 ENABLE_LIBQUADMATH=yes)
 434 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 435   noconfigdirs="$noconfigdirs target-libquadmath"
 436 fi
 437
 438
 439 AC_ARG_ENABLE(libquadmath-support,
 440 AS_HELP_STRING([--disable-libquadmath-support],
 441   [disable libquadmath support for Fortran]),
 442 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 443 ENABLE_LIBQUADMATH_SUPPORT=yes)
 444 enable_libquadmath_support=
 445 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 446   enable_libquadmath_support=no
 447 fi
 448
 449
 450 AC_ARG_ENABLE(libada,
 451 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 452 ENABLE_LIBADA=$enableval,
 453 ENABLE_LIBADA=yes)
 454 if test "${ENABLE_LIBADA}" != "yes" ; then
 455   noconfigdirs="$noconfigdirs gnattools"
 456 fi
 457
 458 AC_ARG_ENABLE(libssp,
 459 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 460 ENABLE_LIBSSP=$enableval,
 461 ENABLE_LIBSSP=yes)
 462
 463 AC_ARG_ENABLE(libstdcxx,
 464 AS_HELP_STRING([--disable-libstdcxx],
 465   [do not build libstdc++-v3 directory]),
 466 ENABLE_LIBSTDCXX=$enableval,
 467 ENABLE_LIBSTDCXX=default)
 468 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 469   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 470 fi]
 471
 472 # If this is accelerator compiler and its target is intelmic we enable
 473 # target liboffloadmic by default.  If this is compiler with offloading
 474 # for intelmic we enable host liboffloadmic by default.  Otherwise
 475 # liboffloadmic is disabled by default.
 476 AC_ARG_ENABLE([liboffloadmic],
 477 AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
 478                [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
 479 [case "$enableval" in
 480   no | host | target)
 481     enable_liboffloadmic=$enableval ;;
 482   *)
 483     AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
 484 esac],
 485 [if test x"$enable_as_accelerator_for" != x; then
 486   case "${target}" in
 487     *-intelmic-* | *-intelmicemul-*)
 488       enable_liboffloadmic=target
 489       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
 490       ;;
 491     *)
 492       enable_liboffloadmic=no
 493       ;;
 494   esac
 495 else
 496   case "${enable_offload_targets}" in
 497     *-intelmic-* | *-intelmicemul-*)
 498       enable_liboffloadmic=host
 499       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
 500       ;;
 501     *)
 502       enable_liboffloadmic=no
 503       ;;
 504     esac
 505 fi])
 506 AC_SUBST(extra_liboffloadmic_configure_flags)
 507
 508 # Enable libgomp by default on hosted POSIX systems, and a few others.
 509 if test x$enable_libgomp = x ; then
 510     case "${target}" in
 511     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 512         ;;
 513     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 514         ;;
 515     *-*-solaris2* | *-*-hpux11*)
 516         ;;
 517     *-*-darwin* | *-*-aix*)
 518         ;;
 519     nvptx*-*-*)
 520         ;;
 521     *)
 522         noconfigdirs="$noconfigdirs target-libgomp"
 523         ;;
 524     esac
 525 fi
 526
 527 # Disable libatomic on unsupported systems.
 528 if test -d ${srcdir}/libatomic; then
 529     if test x$enable_libatomic = x; then
 530         AC_MSG_CHECKING([for libatomic support])
 531         if (srcdir=${srcdir}/libatomic; \
 532                 . ${srcdir}/configure.tgt; \
 533                 test -n "$UNSUPPORTED")
 534         then
 535             AC_MSG_RESULT([no])
 536             noconfigdirs="$noconfigdirs target-libatomic"
 537         else
 538             AC_MSG_RESULT([yes])
 539         fi
 540     fi
 541 fi
 542
 543 # Disable liboffloadmic on unsupported systems.
 544 if test -d ${srcdir}/liboffloadmic; then
 545     if test x$enable_liboffloadmic != xno; then
 546         AC_MSG_CHECKING([for liboffloadmic support])
 547         if (srcdir=${srcdir}/liboffloadmic; \
 548                 . ${srcdir}/configure.tgt; \
 549                 test -n "$UNSUPPORTED")
 550         then
 551             AC_MSG_RESULT([no])
 552             noconfigdirs="$noconfigdirs target-liboffloadmic"
 553         else
 554             AC_MSG_RESULT([yes])
 555         fi
 556     fi
 557 fi
 558
 559 # Disable libitm on unsupported systems.
 560 if test -d ${srcdir}/libitm; then
 561     if test x$enable_libitm = x; then
 562         AC_MSG_CHECKING([for libitm support])
 563         if (srcdir=${srcdir}/libitm; \
 564                 . ${srcdir}/configure.tgt; \
 565                 test -n "$UNSUPPORTED")
 566         then
 567             AC_MSG_RESULT([no])
 568             noconfigdirs="$noconfigdirs target-libitm"
 569         else
 570             AC_MSG_RESULT([yes])
 571         fi
 572     fi
 573 fi
 574
 575 # Disable libsanitizer on unsupported systems.
 576 if test -d ${srcdir}/libsanitizer; then
 577     if test x$enable_libsanitizer = x; then
 578         AC_MSG_CHECKING([for libsanitizer support])
 579         if (srcdir=${srcdir}/libsanitizer; \
 580                 . ${srcdir}/configure.tgt; \
 581                 test -n "$UNSUPPORTED")
 582         then
 583             AC_MSG_RESULT([no])
 584             noconfigdirs="$noconfigdirs target-libsanitizer"
 585         else
 586             AC_MSG_RESULT([yes])
 587         fi
 588     fi
 589 fi
 590
 591 # Disable libvtv on unsupported systems.
 592 if test -d ${srcdir}/libvtv; then
 593     if test x$enable_libvtv = x; then
 594         AC_MSG_CHECKING([for libvtv support])
 595         if (srcdir=${srcdir}/libvtv; \
 596                 . ${srcdir}/configure.tgt; \
 597                 test "$VTV_SUPPORTED" != "yes")
 598         then
 599             AC_MSG_RESULT([no])
 600             noconfigdirs="$noconfigdirs target-libvtv"
 601         else
 602             AC_MSG_RESULT([yes])
 603         fi
 604     fi
 605 fi
 606
 607
 608 # Disable libhsail-rt on unsupported systems.
 609 if test -d ${srcdir}/libhsail-rt; then
 610     if test x$enable_libhsail_rt = x; then
 611         AC_MSG_CHECKING([for libhsail-rt support])
 612         if (srcdir=${srcdir}/libhsail-rt; \
 613                 . ${srcdir}/configure.tgt; \
 614                 test -n "$UNSUPPORTED")
 615         then
 616             AC_MSG_RESULT([no])
 617             unsupported_languages="$unsupported_languages brig"
 618             # This implicitly disables also target-libhsail-rt as it won't
 619             # get added to the build without BRIG FE.
 620         else
 621             AC_MSG_RESULT([yes])
 622         fi
 623     fi
 624 fi
 625
 626
 627 # Disable libquadmath for some systems.
 628 case "${target}" in
 629   avr-*-*)
 630     noconfigdirs="$noconfigdirs target-libquadmath"
 631     ;;
 632   # libquadmath is unused on AIX and libquadmath build process use of
 633   # LD_LIBRARY_PATH can break AIX bootstrap.
 634   powerpc-*-aix* | rs6000-*-aix*)
 635     noconfigdirs="$noconfigdirs target-libquadmath"
 636     ;;
 637 esac
 638
 639 # Disable libssp for some systems.
 640 case "${target}" in
 641   avr-*-*)
 642     # No hosted I/O support.
 643     noconfigdirs="$noconfigdirs target-libssp"
 644     ;;
 645   powerpc-*-aix* | rs6000-*-aix*)
 646     noconfigdirs="$noconfigdirs target-libssp"
 647     ;;
 648   rl78-*-*)
 649     # libssp uses a misaligned load to trigger a fault, but the RL78
 650     # doesn't fault for those - instead, it gives a build-time error
 651     # for explicit misaligned loads.
 652     noconfigdirs="$noconfigdirs target-libssp"
 653     ;;
 654   visium-*-*)
 655     # No hosted I/O support.
 656     noconfigdirs="$noconfigdirs target-libssp"
 657     ;;
 658 esac
 659
 660 # Disable libstdc++-v3 for some systems.
 661 # Allow user to override this if they pass --enable-libstdc++-v3
 662 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 663   case "${target}" in
 664     *-*-vxworks*)
 665       # VxWorks uses the Dinkumware C++ library.
 666       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 667       ;;
 668     arm*-wince-pe*)
 669       # the C++ libraries don't build on top of CE's C libraries
 670       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 671       ;;
 672     avr-*-*)
 673       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 674       ;;
 675     ft32-*-*)
 676       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 677       ;;
 678   esac
 679 fi
 680
 681 # Disable Fortran for some systems.
 682 case "${target}" in
 683   mmix-*-*)
 684     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 685     unsupported_languages="$unsupported_languages fortran"
 686     ;;
 687 esac
 688
 689 # Disable libffi for some systems.
 690 case "${target}" in
 691   powerpc-*-darwin*)
 692     ;;
 693   i[[3456789]]86-*-darwin*)
 694     ;;
 695   x86_64-*-darwin[[912]]*)
 696     ;;
 697   *-*-darwin*)
 698     noconfigdirs="$noconfigdirs target-libffi"
 699     ;;
 700   *-*-netware*)
 701     noconfigdirs="$noconfigdirs target-libffi"
 702     ;;
 703   *-*-phoenix*)
 704     noconfigdirs="$noconfigdirs target-libffi"
 705     ;;
 706   *-*-rtems*)
 707     noconfigdirs="$noconfigdirs target-libffi"
 708     ;;
 709   *-*-tpf*)
 710     noconfigdirs="$noconfigdirs target-libffi"
 711     ;;
 712   *-*-uclinux*)
 713     noconfigdirs="$noconfigdirs target-libffi"
 714     ;;
 715   *-*-vxworks*)
 716     noconfigdirs="$noconfigdirs target-libffi"
 717     ;;
 718   aarch64*-*-freebsd*)
 719     noconfigdirs="$noconfigdirs target-libffi"
 720     ;;
 721   alpha*-*-*vms*)
 722     noconfigdirs="$noconfigdirs target-libffi"
 723     ;;
 724   arm*-*-freebsd*)
 725     noconfigdirs="$noconfigdirs target-libffi"
 726     ;;
 727   arm-wince-pe)
 728     noconfigdirs="$noconfigdirs target-libffi"
 729     ;;
 730   arm*-*-symbianelf*)
 731     noconfigdirs="$noconfigdirs target-libffi"
 732     ;;
 733   cris-*-* | crisv32-*-*)
 734     case "${target}" in
 735       *-*-linux*)
 736         ;;
 737       *) # See PR46792 regarding target-libffi.
 738         noconfigdirs="$noconfigdirs target-libffi";;
 739     esac
 740     ;;
 741   hppa*64*-*-hpux*)
 742     noconfigdirs="$noconfigdirs target-libffi"
 743     ;;
 744   hppa*-hp-hpux11*)
 745     ;;
 746   hppa*-*-hpux*)
 747     noconfigdirs="$noconfigdirs target-libffi"
 748     ;;
 749   ia64*-*-*vms*)
 750     noconfigdirs="$noconfigdirs target-libffi"
 751     ;;
 752   i[[3456789]]86-w64-mingw*)
 753     noconfigdirs="$noconfigdirs target-libffi"
 754     ;;
 755   i[[3456789]]86-*-mingw*)
 756     noconfigdirs="$noconfigdirs target-libffi"
 757     ;;
 758   x86_64-*-mingw*)
 759     noconfigdirs="$noconfigdirs target-libffi"
 760     ;;
 761   mmix-*-*)
 762     noconfigdirs="$noconfigdirs target-libffi"
 763     ;;
 764   powerpc-*-aix*)
 765     ;;
 766   rs6000-*-aix*)
 767     ;;
 768   ft32-*-*)
 769     noconfigdirs="$noconfigdirs target-libffi"
 770     ;;
 771   *-*-lynxos*)
 772     noconfigdirs="$noconfigdirs target-libffi"
 773     ;;
 774 esac
 775
 776 # Disable the go frontend on systems where it is known to not work. Please keep
 777 # this in sync with contrib/config-list.mk.
 778 case "${target}" in
 779 *-*-darwin* | *-*-cygwin* | *-*-mingw*)
 780     unsupported_languages="$unsupported_languages go"
 781     ;;
 782 esac
 783
 784 # Disable libgo for some systems where it is known to not work.
 785 # For testing, you can easily override this with --enable-libgo.
 786 if test x$enable_libgo = x; then
 787     case "${target}" in
 788     *-*-darwin*)
 789         # PR 46986
 790         noconfigdirs="$noconfigdirs target-libgo"
 791         ;;
 792     *-*-cygwin* | *-*-mingw*)
 793         noconfigdirs="$noconfigdirs target-libgo"
 794         ;;
 795     esac
 796 fi
 797
 798 # Default libgloss CPU subdirectory.
 799 libgloss_dir="$target_cpu"
 800
 801 case "${target}" in
 802   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 803     libgloss_dir=wince
 804     ;;
 805   aarch64*-*-* )
 806     libgloss_dir=aarch64
 807     ;;
 808   arm*-*-*)
 809     libgloss_dir=arm
 810     ;;
 811   cris-*-* | crisv32-*-*)
 812     libgloss_dir=cris
 813     ;;
 814   hppa*-*-*)
 815     libgloss_dir=pa
 816     ;;
 817   i[[3456789]]86-*-*)
 818     libgloss_dir=i386
 819     ;;
 820   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 821     libgloss_dir=m68hc11
 822     ;;
 823   m68*-*-* | fido-*-*)
 824     libgloss_dir=m68k
 825     ;;
 826   mips*-*-*)
 827     libgloss_dir=mips
 828     ;;
 829   powerpc*-*-*)
 830     libgloss_dir=rs6000
 831     ;;
 832   sparc*-*-*)
 833     libgloss_dir=sparc
 834     ;;
 835 esac
 836
 837 # Disable newlib and libgloss for various target OSes.
 838 case "${target}" in
 839   alpha*-dec-osf*)
 840     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 841     ;;
 842   i[[3456789]]86-*-linux*)
 843     # This section makes it possible to build newlib natively on linux.
 844     # If we are using a cross compiler then don't configure newlib.
 845     if test x${is_cross_compiler} != xno ; then
 846       noconfigdirs="$noconfigdirs target-newlib"
 847     fi
 848     noconfigdirs="$noconfigdirs target-libgloss"
 849     # If we are not using a cross compiler, do configure newlib.
 850     # Note however, that newlib will only be configured in this situation
 851     # if the --with-newlib option has been given, because otherwise
 852     # 'target-newlib' will appear in skipdirs.
 853     ;;
 854   i[[3456789]]86-*-rdos*)
 855     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 856     ;;
 857   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 858     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 859     ;;
 860   sparc-*-sunos4*)
 861     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 862     ;;
 863   *-*-aix*)
 864     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 865     ;;
 866   *-*-beos*)
 867     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 868     ;;
 869   *-*-chorusos)
 870     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 871     ;;
 872   *-*-dragonfly*)
 873     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 874     ;;
 875   *-*-freebsd*)
 876     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 877     ;;
 878   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 879     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 880     ;;
 881   *-*-lynxos*)
 882     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 883     ;;
 884   *-*-mingw*)
 885     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 886     ;;
 887   *-*-netbsd*)
 888     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 889     ;;
 890   *-*-netware*)
 891     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 892     ;;
 893   *-*-tpf*)
 894     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 895     ;;
 896   *-*-uclinux*)
 897     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 898     ;;
 899   *-*-vxworks*)
 900     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 901     ;;
 902 esac
 903
 904 # Targets that do not use the ELF file format cannot support libctf.
 905 case "${target}" in
 906   *-*-pe | *-*-*vms* | *-*-darwin | *-*-*coff* | *-*-wince | *-*-mingw*)
 907     noconfigdirs="$noconfigdirs libctf"
 908     ;;
 909   *-*-aout | *-*-osf* | *-*-go32 | *-*-macos* | *-*-rhapsody*)
 910     noconfigdirs="$noconfigdirs libctf"
 911     ;;
 912   *-*-netbsdpe | *-*-cygwin* | *-*-pep | *-*-msdos | *-*-winnt)
 913     noconfigdirs="$noconfigdirs libctf"
 914     ;;
 915   ns32k-*-* | pdp11-*-* | *-*-aix* | *-*-netbsdaout)
 916     noconfigdirs="$noconfigdirs libctf"
 917     ;;
 918 esac
 919
 920 case "${target}" in
 921   *-*-chorusos)
 922     ;;
 923   aarch64-*-darwin*)
 924     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 925     noconfigdirs="$noconfigdirs sim target-rda"
 926     ;;
 927   arm-*-darwin*)
 928     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 929     noconfigdirs="$noconfigdirs sim target-rda"
 930     ;;
 931   powerpc-*-darwin*)
 932     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 933     noconfigdirs="$noconfigdirs sim target-rda"
 934     ;;
 935   i[[3456789]]86-*-darwin*)
 936     noconfigdirs="$noconfigdirs ld gprof"
 937     noconfigdirs="$noconfigdirs sim target-rda"
 938     ;;
 939   x86_64-*-darwin[[912]]*)
 940     noconfigdirs="$noconfigdirs ld gas gprof"
 941     noconfigdirs="$noconfigdirs sim target-rda"
 942     ;;
 943   *-*-darwin*)
 944     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 945     noconfigdirs="$noconfigdirs sim target-rda"
 946     ;;
 947   *-*-dragonfly*)
 948     ;;
 949   *-*-freebsd*)
 950     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 951         && test -f /usr/local/include/gmp.h; then
 952       with_gmp=/usr/local
 953     fi
 954     ;;
 955   *-*-kaos*)
 956     # Remove unsupported stuff on all kaOS configurations.
 957     noconfigdirs="$noconfigdirs target-libgloss"
 958     ;;
 959   *-*-netbsd*)
 960     ;;
 961   *-*-netware*)
 962     ;;
 963   *-*-phoenix*)
 964     noconfigdirs="$noconfigdirs target-libgloss"
 965     ;;
 966   *-*-rtems*)
 967     noconfigdirs="$noconfigdirs target-libgloss"
 968     ;;
 969     # The tpf target doesn't support gdb yet.
 970   *-*-tpf*)
 971     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
 972     ;;
 973   *-*-uclinux*)
 974     noconfigdirs="$noconfigdirs target-rda"
 975     ;;
 976   *-*-vxworks*)
 977     ;;
 978   alpha*-dec-osf*)
 979     # ld works, but does not support shared libraries.
 980     # gas doesn't generate exception information.
 981     noconfigdirs="$noconfigdirs gas ld"
 982     ;;
 983   alpha*-*-*vms*)
 984     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
 985     ;;
 986   alpha*-*-*)
 987     # newlib is not 64 bit ready
 988     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 989     ;;
 990   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 991     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
 992     ;;
 993   arc*-*-*)
 994     noconfigdirs="$noconfigdirs sim"
 995     ;;
 996   arm-*-pe*)
 997     noconfigdirs="$noconfigdirs target-libgloss"
 998     ;;
 999   arm-*-riscix*)
1000     noconfigdirs="$noconfigdirs ld target-libgloss"
1001     ;;
1002   avr-*-*)
1003     if test x${with_avrlibc} != xno; then
1004       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1005     fi
1006     ;;
1007   c4x-*-* | tic4x-*-*)
1008     noconfigdirs="$noconfigdirs target-libgloss"
1009     ;;
1010   tic54x-*-*)
1011     noconfigdirs="$noconfigdirs target-libgloss gdb"
1012     ;;
1013   d10v-*-*)
1014     noconfigdirs="$noconfigdirs target-libgloss"
1015     ;;
1016   d30v-*-*)
1017     noconfigdirs="$noconfigdirs gdb"
1018     ;;
1019   fr30-*-elf*)
1020     noconfigdirs="$noconfigdirs gdb"
1021     ;;
1022   ft32-*-*)
1023     noconfigdirs="$noconfigdirs target-rda gprof"
1024     ;;
1025   moxie-*-*)
1026     noconfigdirs="$noconfigdirs"
1027     ;;
1028   h8300*-*-*)
1029     noconfigdirs="$noconfigdirs target-libgloss"
1030     ;;
1031   h8500-*-*)
1032     noconfigdirs="$noconfigdirs target-libgloss"
1033     ;;
1034   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1035     ;;
1036   hppa*64*-*-hpux*)
1037     noconfigdirs="$noconfigdirs gdb"
1038     ;;
1039   hppa*-*-hpux11*)
1040     noconfigdirs="$noconfigdirs gdb ld"
1041     ;;
1042   hppa*64*-*-linux*)
1043     ;;
1044   hppa*-*-linux*)
1045     ;;
1046   hppa*-*-*elf* | \
1047   hppa*-*-lites* | \
1048   hppa*-*-openbsd* | \
1049   hppa*64*-*-*)
1050     ;;
1051   hppa*-*-pro*)
1052     ;;
1053   hppa*-*-*)
1054     noconfigdirs="$noconfigdirs ld"
1055     ;;
1056   i960-*-*)
1057     noconfigdirs="$noconfigdirs gdb"
1058     ;;
1059   ia64*-*-elf*)
1060     # No gdb support yet.
1061     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1062     ;;
1063   ia64*-**-hpux*)
1064     # No ld support yet.
1065     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1066     ;;
1067   ia64*-*-*vms*)
1068     # No ld support yet.
1069     noconfigdirs="$noconfigdirs libgui itcl ld"
1070     ;;
1071   i[[3456789]]86-w64-mingw*)
1072     ;;
1073   i[[3456789]]86-*-mingw*)
1074     target_configdirs="$target_configdirs target-winsup"
1075     ;;
1076   *-*-cygwin*)
1077     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1078     noconfigdirs="$noconfigdirs target-libgloss"
1079     # always build newlib if winsup directory is present.
1080     if test -d "$srcdir/winsup/cygwin"; then
1081       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1082     elif test -d "$srcdir/newlib"; then
1083       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1084     fi
1085     ;;
1086   i[[3456789]]86-*-pe)
1087     noconfigdirs="$noconfigdirs target-libgloss"
1088     ;;
1089   i[[3456789]]86-*-sco3.2v5*)
1090     # The linker does not yet know about weak symbols in COFF,
1091     # and is not configured to handle mixed ELF and COFF.
1092     noconfigdirs="$noconfigdirs ld target-libgloss"
1093     ;;
1094   i[[3456789]]86-*-sco*)
1095     noconfigdirs="$noconfigdirs gprof target-libgloss"
1096     ;;
1097   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1098     noconfigdirs="$noconfigdirs target-libgloss"
1099     ;;
1100   i[[3456789]]86-*-sysv4*)
1101     noconfigdirs="$noconfigdirs target-libgloss"
1102     ;;
1103   i[[3456789]]86-*-beos*)
1104     noconfigdirs="$noconfigdirs gdb"
1105     ;;
1106   i[[3456789]]86-*-rdos*)
1107     noconfigdirs="$noconfigdirs gdb"
1108     ;;
1109   mmix-*-*)
1110     noconfigdirs="$noconfigdirs gdb"
1111     ;;
1112   mt-*-*)
1113     noconfigdirs="$noconfigdirs sim"
1114     ;;
1115   nfp-*-*)
1116     noconfigdirs="$noconfigdirs ld gas gdb gprof sim"
1117     noconfigdirs="$noconfigdirs $target_libraries"
1118     ;;
1119   powerpc-*-aix*)
1120     # copied from rs6000-*-* entry
1121     noconfigdirs="$noconfigdirs gprof"
1122     ;;
1123   powerpc*-*-winnt* | powerpc*-*-pe*)
1124     target_configdirs="$target_configdirs target-winsup"
1125     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1126     # always build newlib.
1127     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1128     ;;
1129     # This is temporary until we can link against shared libraries
1130   powerpcle-*-solaris*)
1131     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1132     ;;
1133   powerpc-*-beos*)
1134     noconfigdirs="$noconfigdirs gdb"
1135     ;;
1136   rs6000-*-lynxos*)
1137     noconfigdirs="$noconfigdirs gprof"
1138     ;;
1139   rs6000-*-aix*)
1140     noconfigdirs="$noconfigdirs gprof"
1141     ;;
1142   rs6000-*-*)
1143     noconfigdirs="$noconfigdirs gprof"
1144     ;;
1145   m68k-apollo-*)
1146     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1147     ;;
1148   microblaze*)
1149     noconfigdirs="$noconfigdirs gprof"
1150     ;;
1151   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1152     if test x$with_newlib = xyes; then
1153       noconfigdirs="$noconfigdirs gprof"
1154     fi
1155     ;;
1156   mips*-*-irix5*)
1157     noconfigdirs="$noconfigdirs gprof target-libgloss"
1158     ;;
1159   mips*-*-irix6*)
1160     noconfigdirs="$noconfigdirs gprof target-libgloss"
1161     ;;
1162   mips*-*-bsd*)
1163     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1164     ;;
1165   mips*-*-linux*)
1166     ;;
1167   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1168   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1169     noconfigdirs="$noconfigdirs ld gas gprof"
1170     ;;
1171   mips*-*-*)
1172     noconfigdirs="$noconfigdirs gprof"
1173     ;;
1174   nvptx*-*-*)
1175     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1176     ;;
1177   sh-*-*)
1178     case "${target}" in
1179       sh*-*-elf)
1180          ;;
1181       *)
1182          noconfigdirs="$noconfigdirs target-libgloss" ;;
1183     esac
1184     ;;
1185   sparc-*-sunos4*)
1186     if test x${is_cross_compiler} = xno ; then
1187            use_gnu_ld=no
1188     fi
1189     ;;
1190   tic6x-*-*)
1191     noconfigdirs="$noconfigdirs sim"
1192     ;;
1193   tilepro*-*-* | tilegx*-*-*)
1194     noconfigdirs="$noconfigdirs sim"
1195     ;;
1196   v810-*-*)
1197     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1198     ;;
1199   vax-*-*)
1200     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1201     ;;
1202   wasm32-*-*)
1203     noconfigdirs="$noconfigdirs ld"
1204     ;;
1205 esac
1206
1207 # If we aren't building newlib, then don't build libgloss, since libgloss
1208 # depends upon some newlib header files.
1209 case "${noconfigdirs}" in
1210   *target-libgloss*) ;;
1211   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1212 esac
1213
1214 # Work in distributions that contain no compiler tools, like Autoconf.
1215 host_makefile_frag=/dev/null
1216 if test -d ${srcdir}/config ; then
1217 case "${host}" in
1218   i[[3456789]]86-*-msdosdjgpp*)
1219     host_makefile_frag="config/mh-djgpp"
1220     ;;
1221   *-cygwin*)
1222     ACX_CHECK_CYGWIN_CAT_WORKS
1223     host_makefile_frag="config/mh-cygwin"
1224     ;;
1225   *-mingw*)
1226     host_makefile_frag="config/mh-mingw"
1227     ;;
1228   alpha*-linux*)
1229     host_makefile_frag="config/mh-alpha-linux"
1230     ;;
1231   hppa*-hp-hpux10*)
1232     host_makefile_frag="config/mh-pa-hpux10"
1233     ;;
1234   hppa*-hp-hpux*)
1235     host_makefile_frag="config/mh-pa"
1236     ;;
1237   hppa*-*)
1238     host_makefile_frag="config/mh-pa"
1239     ;;
1240   *-*-darwin*)
1241     host_makefile_frag="config/mh-darwin"
1242     ;;
1243   powerpc-*-aix*)
1244     host_makefile_frag="config/mh-ppc-aix"
1245     ;;
1246   rs6000-*-aix*)
1247     host_makefile_frag="config/mh-ppc-aix"
1248     ;;
1249 esac
1250 fi
1251
1252 if test "${build}" != "${host}" ; then
1253   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1254   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1255   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1256   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1257   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1258   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1259   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1260   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1261   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1262   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1263   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1264   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1265 else
1266   AR_FOR_BUILD="\$(AR)"
1267   AS_FOR_BUILD="\$(AS)"
1268   CC_FOR_BUILD="\$(CC)"
1269   CXX_FOR_BUILD="\$(CXX)"
1270   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1271   GOC_FOR_BUILD="\$(GOC)"
1272   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1273   LD_FOR_BUILD="\$(LD)"
1274   NM_FOR_BUILD="\$(NM)"
1275   RANLIB_FOR_BUILD="\$(RANLIB)"
1276   WINDRES_FOR_BUILD="\$(WINDRES)"
1277   WINDMC_FOR_BUILD="\$(WINDMC)"
1278 fi
1279
1280 AC_PROG_CC
1281 AC_PROG_CXX
1282
1283 # We must set the default linker to the linker used by gcc for the correct
1284 # operation of libtool.  If LD is not defined and we are using gcc, try to
1285 # set the LD default to the ld used by gcc.
1286 if test -z "$LD"; then
1287   if test "$GCC" = yes; then
1288     case $build in
1289     *-*-mingw*)
1290       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1291     *)
1292       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1293     esac
1294     case $gcc_prog_ld in
1295     # Accept absolute paths.
1296     [[\\/]* | [A-Za-z]:[\\/]*)]
1297       LD="$gcc_prog_ld" ;;
1298     esac
1299   fi
1300 fi
1301
1302 # Check whether -static-libstdc++ -static-libgcc is supported.
1303 have_static_libs=no
1304 if test "$GCC" = yes; then
1305   saved_LDFLAGS="$LDFLAGS"
1306
1307   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1308   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1309   AC_LANG_PUSH(C++)
1310   AC_LINK_IFELSE([AC_LANG_SOURCE([
1311 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1312 #error -static-libstdc++ not implemented
1313 #endif
1314 int main() {}])],
1315     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1316     [AC_MSG_RESULT([no])])
1317   AC_LANG_POP(C++)
1318
1319   LDFLAGS="$saved_LDFLAGS"
1320 fi
1321
1322 ACX_PROG_GNAT
1323 ACX_PROG_CMP_IGNORE_INITIAL
1324
1325 AC_ARG_ENABLE([bootstrap],
1326 [AS_HELP_STRING([--enable-bootstrap],
1327                 [enable bootstrapping @<:@yes if native build@:>@])],,
1328 enable_bootstrap=default)
1329
1330 # Issue errors and warnings for invalid/strange bootstrap combinations.
1331 if test -r $srcdir/gcc/configure; then
1332   have_compiler=yes
1333 else
1334   have_compiler=no
1335 fi
1336
1337 case "$have_compiler:$host:$target:$enable_bootstrap" in
1338   *:*:*:no) ;;
1339
1340   # Default behavior.  Enable bootstrap if we have a compiler
1341   # and we are in a native configuration.
1342   yes:$build:$build:default)
1343     enable_bootstrap=yes ;;
1344
1345   *:*:*:default)
1346     enable_bootstrap=no ;;
1347
1348   # We have a compiler and we are in a native configuration, bootstrap is ok
1349   yes:$build:$build:yes)
1350     ;;
1351
1352   # Other configurations, but we have a compiler.  Assume the user knows
1353   # what he's doing.
1354   yes:*:*:yes)
1355     AC_MSG_WARN([trying to bootstrap a cross compiler])
1356     ;;
1357
1358   # No compiler: if they passed --enable-bootstrap explicitly, fail
1359   no:*:*:yes)
1360     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1361
1362   # Fail if wrong command line
1363   *)
1364     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1365     ;;
1366 esac
1367
1368 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1369 # C++98 compiler can still start the bootstrap.
1370 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1371   CXX="$CXX -std=gnu++98"
1372 fi
1373
1374 # Used for setting $lt_cv_objdir
1375 _LT_CHECK_OBJDIR
1376
1377 # Check for GMP, MPFR and MPC
1378 gmplibs="-lmpc -lmpfr -lgmp"
1379 gmpinc=
1380 have_gmp=no
1381
1382 # Specify a location for mpc
1383 # check for this first so it ends up on the link line before mpfr.
1384 AC_ARG_WITH(mpc,
1385 [AS_HELP_STRING([--with-mpc=PATH],
1386                 [specify prefix directory for installed MPC package.
1387                  Equivalent to --with-mpc-include=PATH/include
1388                  plus --with-mpc-lib=PATH/lib])])
1389 AC_ARG_WITH(mpc-include,
1390 [AS_HELP_STRING([--with-mpc-include=PATH],
1391                 [specify directory for installed MPC include files])])
1392 AC_ARG_WITH(mpc-lib,
1393 [AS_HELP_STRING([--with-mpc-lib=PATH],
1394                 [specify directory for the installed MPC library])])
1395
1396 if test "x$with_mpc" != x; then
1397   gmplibs="-L$with_mpc/lib $gmplibs"
1398   gmpinc="-I$with_mpc/include $gmpinc"
1399 fi
1400 if test "x$with_mpc_include" != x; then
1401   gmpinc="-I$with_mpc_include $gmpinc"
1402 fi
1403 if test "x$with_mpc_lib" != x; then
1404   gmplibs="-L$with_mpc_lib $gmplibs"
1405 fi
1406 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1407   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1408   gmpinc='-I$$s/mpc/src '"$gmpinc"
1409   # Do not test the mpc version.  Assume that it is sufficient, since
1410   # it is in the source tree, and the library has not been built yet
1411   # but it would be included on the link line in the version check below
1412   # hence making the test fail.
1413   have_gmp=yes
1414 fi
1415
1416 # Specify a location for mpfr
1417 # check for this first so it ends up on the link line before gmp.
1418 AC_ARG_WITH(mpfr-dir,
1419 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1420 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1421 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1422
1423 AC_ARG_WITH(mpfr,
1424 [AS_HELP_STRING([--with-mpfr=PATH],
1425                 [specify prefix directory for installed MPFR package.
1426                  Equivalent to --with-mpfr-include=PATH/include
1427                  plus --with-mpfr-lib=PATH/lib])])
1428 AC_ARG_WITH(mpfr-include,
1429 [AS_HELP_STRING([--with-mpfr-include=PATH],
1430                 [specify directory for installed MPFR include files])])
1431 AC_ARG_WITH(mpfr-lib,
1432 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1433                 [specify directory for the installed MPFR library])])
1434
1435 if test "x$with_mpfr" != x; then
1436   gmplibs="-L$with_mpfr/lib $gmplibs"
1437   gmpinc="-I$with_mpfr/include $gmpinc"
1438 fi
1439 if test "x$with_mpfr_include" != x; then
1440   gmpinc="-I$with_mpfr_include $gmpinc"
1441 fi
1442 if test "x$with_mpfr_lib" != x; then
1443   gmplibs="-L$with_mpfr_lib $gmplibs"
1444 fi
1445 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1446   # MPFR v3.1.0 moved the sources into a src sub-directory.
1447   if ! test -d ${srcdir}/mpfr/src; then
1448     AC_MSG_ERROR([dnl
1449 Building GCC with MPFR in the source tree is only handled for MPFR 3.1.0+.])
1450   fi
1451   gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1452   gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1453   extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1454   # Do not test the mpfr version.  Assume that it is sufficient, since
1455   # it is in the source tree, and the library has not been built yet
1456   # but it would be included on the link line in the version check below
1457   # hence making the test fail.
1458   have_gmp=yes
1459 fi
1460
1461 # Specify a location for gmp
1462 AC_ARG_WITH(gmp-dir,
1463 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1464 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1465 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1466
1467 AC_ARG_WITH(gmp,
1468 [AS_HELP_STRING([--with-gmp=PATH],
1469                 [specify prefix directory for the installed GMP package.
1470                  Equivalent to --with-gmp-include=PATH/include
1471                  plus --with-gmp-lib=PATH/lib])])
1472 AC_ARG_WITH(gmp-include,
1473 [AS_HELP_STRING([--with-gmp-include=PATH],
1474                 [specify directory for installed GMP include files])])
1475 AC_ARG_WITH(gmp-lib,
1476 [AS_HELP_STRING([--with-gmp-lib=PATH],
1477                 [specify directory for the installed GMP library])])
1478
1479
1480 if test "x$with_gmp" != x; then
1481   gmplibs="-L$with_gmp/lib $gmplibs"
1482   gmpinc="-I$with_gmp/include $gmpinc"
1483 fi
1484 if test "x$with_gmp_include" != x; then
1485   gmpinc="-I$with_gmp_include $gmpinc"
1486 fi
1487 if test "x$with_gmp_lib" != x; then
1488   gmplibs="-L$with_gmp_lib $gmplibs"
1489 fi
1490 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1491   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1492   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1493   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1494   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1495   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1496   # Do not test the gmp version.  Assume that it is sufficient, since
1497   # it is in the source tree, and the library has not been built yet
1498   # but it would be included on the link line in the version check below
1499   # hence making the test fail.
1500   have_gmp=yes
1501 fi
1502
1503 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1504   have_gmp=yes
1505   saved_CFLAGS="$CFLAGS"
1506   CFLAGS="$CFLAGS $gmpinc"
1507   # Check for the recommended and required versions of GMP.
1508   AC_MSG_CHECKING([for the correct version of gmp.h])
1509   AC_TRY_COMPILE([#include "gmp.h"],[
1510   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1511   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1512   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1513   choke me
1514   #endif
1515   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1516   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1517   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1518   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1519   choke me
1520   #endif
1521   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1522    [AC_MSG_RESULT([no]); have_gmp=no])
1523
1524   # If we have GMP, check the MPFR version.
1525   if test x"$have_gmp" = xyes; then
1526     # Check for the recommended and required versions of MPFR.
1527     AC_MSG_CHECKING([for the correct version of mpfr.h])
1528     AC_TRY_COMPILE([#include <gmp.h>
1529     #include <mpfr.h>],[
1530     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1531     choke me
1532     #endif
1533     ], [AC_TRY_COMPILE([#include <gmp.h>
1534     #include <mpfr.h>],[
1535     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1536     choke me
1537     #endif
1538     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1539      [AC_MSG_RESULT([no]); have_gmp=no])
1540   fi
1541
1542   # Check for the MPC header version.
1543   if test x"$have_gmp" = xyes ; then
1544     # Check for the recommended and required versions of MPC.
1545     AC_MSG_CHECKING([for the correct version of mpc.h])
1546     AC_TRY_COMPILE([#include <mpc.h>],[
1547     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1548     choke me
1549     #endif
1550     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1551     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1552     choke me
1553     #endif
1554     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1555      [AC_MSG_RESULT([no]); have_gmp=no])
1556   fi
1557
1558   # Now check the MPFR library.
1559   if test x"$have_gmp" = xyes; then
1560     saved_LIBS="$LIBS"
1561     LIBS="$LIBS $gmplibs"
1562     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1563     AC_TRY_LINK([#include <mpc.h>],[
1564     mpfr_t n;
1565     mpfr_t x;
1566     mpc_t c;
1567     int t;
1568     mpfr_init (n);
1569     mpfr_init (x);
1570     mpfr_atan2 (n, n, x, GMP_RNDN);
1571     mpfr_erfc (n, x, GMP_RNDN);
1572     mpfr_subnormalize (x, t, GMP_RNDN);
1573     mpfr_clear(n);
1574     mpfr_clear(x);
1575     mpc_init2 (c, 53);
1576     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1577     mpc_cosh (c, c, MPC_RNDNN);
1578     mpc_pow (c, c, c, MPC_RNDNN);
1579     mpc_acosh (c, c, MPC_RNDNN);
1580     mpc_clear (c);
1581     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1582     LIBS="$saved_LIBS"
1583   fi
1584
1585   CFLAGS="$saved_CFLAGS"
1586
1587 # The library versions listed in the error message below should match
1588 # the HARD-minimums enforced above.
1589   if test x$have_gmp != xyes; then
1590     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1591 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1592 their locations.  Source code for these libraries can be found at
1593 their respective hosting sites as well as at
1594 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1595 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1596 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1597 make sure that you have installed both the libraries and the header
1598 files.  They may be located in separate packages.])
1599   fi
1600 fi
1601
1602 # Flags needed for both GMP, MPFR and/or MPC.
1603 AC_SUBST(gmplibs)
1604 AC_SUBST(gmpinc)
1605 AC_SUBST(extra_mpfr_configure_flags)
1606 AC_SUBST(extra_mpc_gmp_configure_flags)
1607 AC_SUBST(extra_mpc_mpfr_configure_flags)
1608 AC_SUBST(extra_isl_gmp_configure_flags)
1609
1610 # Libraries to use for stage1 or when not bootstrapping.
1611 AC_ARG_WITH(stage1-libs,
1612 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1613 [if test "$withval" = "no" -o "$withval" = "yes"; then
1614    stage1_libs=
1615  else
1616    stage1_libs=$withval
1617  fi],
1618 [stage1_libs=])
1619 AC_SUBST(stage1_libs)
1620
1621 # Linker flags to use for stage1 or when not bootstrapping.
1622 AC_ARG_WITH(stage1-ldflags,
1623 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1624 [if test "$withval" = "no" -o "$withval" = "yes"; then
1625    stage1_ldflags=
1626  else
1627    stage1_ldflags=$withval
1628  fi],
1629 [stage1_ldflags=
1630  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1631  # if supported.  But if the user explicitly specified the libraries to use,
1632  # trust that they are doing what they want.
1633  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1634    stage1_ldflags="-static-libstdc++ -static-libgcc"
1635  fi])
1636 AC_SUBST(stage1_ldflags)
1637
1638 # Libraries to use for stage2 and later builds.
1639 AC_ARG_WITH(boot-libs,
1640 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1641 [if test "$withval" = "no" -o "$withval" = "yes"; then
1642    poststage1_libs=
1643  else
1644    poststage1_libs=$withval
1645  fi],
1646 [poststage1_libs=])
1647 AC_SUBST(poststage1_libs)
1648
1649 # Linker flags to use for stage2 and later builds.
1650 AC_ARG_WITH(boot-ldflags,
1651 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1652                 [linker flags for stage2 and later])],
1653 [if test "$withval" = "no" -o "$withval" = "yes"; then
1654    poststage1_ldflags=
1655  else
1656    poststage1_ldflags=$withval
1657  fi],
1658 [poststage1_ldflags=
1659  # In stages 2 and 3, default to linking libstdc++ and libgcc
1660  # statically.  But if the user explicitly specified the libraries to
1661  # use, trust that they are doing what they want.
1662  if test "$poststage1_libs" = ""; then
1663    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1664  fi])
1665 AC_SUBST(poststage1_ldflags)
1666
1667 # GCC GRAPHITE dependency isl.
1668 # Basic setup is inlined here, actual checks are in config/isl.m4
1669
1670 AC_ARG_WITH(isl,
1671   [AS_HELP_STRING(
1672    [--with-isl=PATH],
1673    [Specify prefix directory for the installed isl package.
1674     Equivalent to --with-isl-include=PATH/include
1675     plus --with-isl-lib=PATH/lib])])
1676
1677 # Treat --without-isl as a request to disable
1678 # GRAPHITE support and skip all following checks.
1679 if test "x$with_isl" != "xno"; then
1680   # Check for isl
1681   dnl Provide configure switches and initialize islinc & isllibs
1682   dnl with user input.
1683   ISL_INIT_FLAGS
1684   dnl The versions of isl that work for Graphite
1685   ISL_CHECK_VERSION()
1686   dnl Only execute fail-action, if isl has been requested.
1687   ISL_IF_FAILED([
1688     AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1689 fi
1690
1691 # If the isl check failed, disable builds of in-tree variant of isl
1692 if test "x$with_isl" = xno ||
1693    test "x$gcc_cv_isl" = xno; then
1694   noconfigdirs="$noconfigdirs isl"
1695   islinc=
1696 fi
1697
1698 AC_SUBST(isllibs)
1699 AC_SUBST(islinc)
1700
1701 # Check for LTO support.
1702 AC_ARG_ENABLE(lto,
1703 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1704 enable_lto=$enableval,
1705 enable_lto=yes; default_enable_lto=yes)
1706
1707 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1708   build_lto_plugin=yes
1709 ],[if test x"$default_enable_lto" = x"yes" ; then
1710     case $target in
1711       *-apple-darwin[[912]]* | *-cygwin* | *-mingw* | *djgpp*) ;;
1712       # On other non-ELF platforms, LTO has yet to be validated.
1713       *) enable_lto=no ;;
1714     esac
1715   else
1716   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1717   # It would also be nice to check the binutils support, but we don't
1718   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1719   # warn during gcc/ subconfigure; unless you're bootstrapping with
1720   # -flto it won't be needed until after installation anyway.
1721     case $target in
1722       *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1723       *) if test x"$enable_lto" = x"yes"; then
1724         AC_MSG_ERROR([LTO support is not enabled for this target.])
1725         fi
1726       ;;
1727     esac
1728   fi
1729   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1730   # Build it unless LTO was explicitly disabled.
1731   case $target in
1732     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1733     *) ;;
1734   esac
1735 ])
1736
1737 AC_ARG_ENABLE(linker-plugin-configure-flags,
1738   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1739     [additional flags for configuring linker plugins @<:@none@:>@])],
1740   extra_linker_plugin_configure_flags=$enableval,
1741   extra_linker_plugin_configure_flags=)
1742 AC_SUBST(extra_linker_plugin_configure_flags)
1743 AC_ARG_ENABLE(linker-plugin-flags,
1744   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1745     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1746   extra_linker_plugin_flags=$enableval,
1747   extra_linker_plugin_flags=)
1748 AC_SUBST(extra_linker_plugin_flags)
1749
1750 # Enable --enable-host-shared.
1751 # Checked early to determine whether jit is an 'all' language
1752 AC_ARG_ENABLE(host-shared,
1753 [AS_HELP_STRING([--enable-host-shared],
1754                 [build host code as shared libraries])],
1755 [host_shared=$enableval], [host_shared=no])
1756 AC_SUBST(host_shared)
1757
1758 # By default, C and C++ are the only stage 1 languages.
1759 stage1_languages=,c,
1760
1761 # Target libraries that we bootstrap.
1762 bootstrap_target_libs=,target-libgcc,
1763
1764 # Figure out what language subdirectories are present.
1765 # Look if the user specified --enable-languages="..."; if not, use
1766 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1767 # go away some day.
1768 # NB:  embedded tabs in this IF block -- do not untabify
1769 if test -d ${srcdir}/gcc; then
1770   if test x"${enable_languages+set}" != xset; then
1771     if test x"${LANGUAGES+set}" = xset; then
1772       enable_languages="${LANGUAGES}"
1773         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1774     else
1775       enable_languages=default
1776     fi
1777   else
1778     if test x"${enable_languages}" = x ||
1779        test x"${enable_languages}" = xyes;
1780        then
1781       echo configure.ac: --enable-languages needs at least one language argument 1>&2
1782       exit 1
1783     fi
1784   fi
1785   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1786
1787   # 'f95' is the old name for the 'fortran' language. We issue a warning
1788   # and make the substitution.
1789   case ,${enable_languages}, in
1790     *,f95,*)
1791       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1792       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1793       ;;
1794   esac
1795
1796   # If bootstrapping, C++ must be enabled.
1797   case ",$enable_languages,:$enable_bootstrap" in
1798     *,c++,*:*) ;;
1799     *:yes)
1800       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1801         enable_languages="${enable_languages},c++"
1802       else
1803         AC_MSG_ERROR([bootstrapping requires c++ sources])
1804       fi
1805       ;;
1806   esac
1807
1808   # First scan to see if an enabled language requires some other language.
1809   # We assume that a given config-lang.in will list all the language
1810   # front ends it requires, even if some are required indirectly.
1811   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1812     case ${lang_frag} in
1813       ..) ;;
1814       # The odd quoting in the next line works around
1815       # an apparent bug in bash 1.12 on linux.
1816       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1817       *)
1818         # From the config-lang.in, get $language, $lang_requires, and
1819         # $lang_requires_boot_languages.
1820         language=
1821         lang_requires=
1822         lang_requires_boot_languages=
1823         # set srcdir during sourcing lang_frag to the gcc dir.
1824         # Sadly overriding srcdir on the . line doesn't work in plain sh as it
1825         # polutes this shell
1826         saved_srcdir=${srcdir}
1827         srcdir=${srcdir}/gcc . ${lang_frag}
1828         srcdir=${saved_srcdir}
1829         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1830           case ,${enable_languages}, in
1831             *,$other,*) ;;
1832             *,default,*) ;;
1833             *,all,*) ;;
1834             *,$language,*)
1835               echo " \`$other' language required by \`$language'; enabling" 1>&2
1836               enable_languages="${enable_languages},${other}"
1837               ;;
1838           esac
1839         done
1840         for other in ${lang_requires_boot_languages} ; do
1841           if test "$other" != "c"; then
1842             case ,${enable_stage1_languages}, in
1843               *,$other,*) ;;
1844               *,default,*) ;;
1845               *,all,*) ;;
1846               *)
1847                 case ,${enable_languages}, in
1848                   *,$language,*)
1849                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1850                     enable_stage1_languages="$enable_stage1_languages,${other}"
1851                     ;;
1852                 esac
1853                 ;;
1854             esac
1855           fi
1856         done
1857         ;;
1858     esac
1859   done
1860
1861   new_enable_languages=,c,
1862
1863   # If LTO is enabled, add the LTO front end.
1864   if test "$enable_lto" = "yes" ; then
1865     case ,${enable_languages}, in
1866       *,lto,*) ;;
1867       *) enable_languages="${enable_languages},lto" ;;
1868     esac
1869     if test "${build_lto_plugin}" = "yes" ; then
1870       configdirs="$configdirs lto-plugin"
1871     fi
1872   fi
1873
1874   # If we're building an offloading compiler, add the LTO front end.
1875   if test x"$enable_as_accelerator_for" != x ; then
1876     case ,${enable_languages}, in
1877       *,lto,*) ;;
1878       *) enable_languages="${enable_languages},lto" ;;
1879     esac
1880   fi
1881
1882   missing_languages=`echo ",$enable_languages," | sed -e s/,default,/,/ -e s/,all,/,/ -e s/,c,/,/ `
1883   potential_languages=,c,
1884
1885   enabled_target_libs=
1886   disabled_target_libs=
1887
1888   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1889     case ${lang_frag} in
1890       ..) ;;
1891       # The odd quoting in the next line works around
1892       # an apparent bug in bash 1.12 on linux.
1893       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1894       *)
1895         # From the config-lang.in, get $language, $target_libs,
1896         # $lang_dirs, $boot_language, and $build_by_default
1897         language=
1898         target_libs=
1899         lang_dirs=
1900         subdir_requires=
1901         boot_language=no
1902         build_by_default=yes
1903         # set srcdir during sourcing.  See above about save & restore
1904         saved_srcdir=${srcdir}
1905         srcdir=${srcdir}/gcc . ${lang_frag}
1906         srcdir=${saved_srcdir}
1907         if test x${language} = x; then
1908           echo "${lang_frag} doesn't set \$language." 1>&2
1909           exit 1
1910         fi
1911
1912         if test "$language" = "c++"; then
1913           boot_language=yes
1914         fi
1915
1916         add_this_lang=no
1917         # C is always enabled, so no need to add it again
1918         if test "$language" != "c"; then
1919           case ,${enable_languages}, in
1920             *,${language},*)
1921               # Language was explicitly selected; include it
1922               add_this_lang=yes
1923               ;;
1924             *,all,*)
1925               # All languages are enabled
1926               add_this_lang=all
1927               ;;
1928             *,default,*)
1929               # 'default' was selected, select it if it is a default language
1930               add_this_lang=${build_by_default}
1931               ;;
1932           esac
1933         fi
1934
1935         # Disable languages that need other directories if these aren't available.
1936         for i in $subdir_requires; do
1937           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1938           case ${add_this_lang} in
1939             yes)
1940               # Specifically requested language; tell them.
1941               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1942               ;;
1943             all)
1944               AC_MSG_WARN([The gcc/$i directory contains parts of $language but is missing])
1945               add_this_lang=unsupported
1946               ;;
1947             *)
1948               # Silently disable.
1949               add_this_lang=unsupported
1950               ;;
1951           esac
1952         done
1953
1954         # Disable Ada if no preexisting GNAT is available.
1955         case ${add_this_lang}:${language}:${have_gnat} in
1956           yes:ada:no)
1957             # Specifically requested language; tell them.
1958             AC_MSG_ERROR([GNAT is required to build $language])
1959             ;;
1960           all:ada:no)
1961             AC_MSG_WARN([GNAT is required to build $language])
1962             add_this_lang=unsupported
1963             ;;
1964           *:ada:no)
1965             # Silently disable.
1966             add_this_lang=unsupported
1967             ;;
1968         esac
1969
1970         # Disable jit if -enable-host-shared not specified
1971         case ${add_this_lang}:${language}:${host_shared} in
1972           yes:jit:no)
1973             # PR jit/64780: explicitly specify --enable-host-shared
1974             AC_MSG_ERROR([
1975 Enabling language "jit" requires --enable-host-shared.
1976
1977 --enable-host-shared typically slows the rest of the compiler down by
1978 a few %, so you must explicitly enable it.
1979
1980 If you want to build both the jit and the regular compiler, it is often
1981 best to do this via two separate configure/builds, in separate
1982 directories, to avoid imposing the performance cost of
1983 --enable-host-shared on the regular compiler.])
1984             ;;
1985           all:jit:no)
1986             AC_MSG_WARN([--enable-host-shared required to build $language])
1987             add_this_lang=unsupported
1988             ;;
1989           *:jit:no)
1990             # Silently disable.
1991             add_this_lang=unsupported
1992             ;;
1993         esac
1994
1995         # Disable a language that is unsupported by the target.
1996         case "${add_this_lang}: $unsupported_languages " in
1997           no:*) ;;
1998           unsupported:*) ;;
1999           *:*" $language "*)
2000             AC_MSG_WARN([${language} not supported for this target])
2001             add_this_lang=unsupported
2002             ;;
2003         esac
2004
2005         case $add_this_lang in
2006           unsupported)
2007             # Remove language-dependent dirs.
2008             disabled_target_libs="$disabled_target_libs $target_libs"
2009             noconfigdirs="$noconfigdirs $lang_dirs"
2010             ;;
2011           no)
2012             # Remove language-dependent dirs; still show language as supported.
2013             disabled_target_libs="$disabled_target_libs $target_libs"
2014             noconfigdirs="$noconfigdirs $lang_dirs"
2015             potential_languages="${potential_languages}${language},"
2016             ;;
2017           all|yes)
2018             new_enable_languages="${new_enable_languages}${language},"
2019             potential_languages="${potential_languages}${language},"
2020             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2021             enabled_target_libs="$enabled_target_libs $target_libs"
2022             case "${boot_language}:,$enable_stage1_languages," in
2023               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2024                 # Add to (comma-separated) list of stage 1 languages.
2025                 case ",$stage1_languages," in
2026                   *,$language,* | ,yes, | ,all,) ;;
2027                   *) stage1_languages="${stage1_languages}${language}," ;;
2028                 esac
2029                 # We need to bootstrap any supporting libraries.
2030                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2031                 ;;
2032             esac
2033             ;;
2034         esac
2035         ;;
2036     esac
2037   done
2038
2039   # Add target libraries which are only needed for disabled languages
2040   # to noconfigdirs.
2041   if test -n "$disabled_target_libs"; then
2042     for dir in $disabled_target_libs; do
2043       case " $enabled_target_libs " in
2044       *" ${dir} "*) ;;
2045       *) noconfigdirs="$noconfigdirs $dir" ;;
2046       esac
2047     done
2048   fi
2049
2050   AC_ARG_ENABLE(stage1-languages,
2051   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2052                   [choose additional languages to build during
2053                   stage1.  Mostly useful for compiler development])],
2054   [case ,${enable_stage1_languages}, in
2055     ,no,|,,)
2056       # Set it to something that will have no effect in the loop below
2057       enable_stage1_languages=c ;;
2058     ,yes,)
2059       enable_stage1_languages=`echo $new_enable_languages | \
2060         sed -e "s/^,//" -e "s/,$//" ` ;;
2061     *,all,*)
2062       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2063         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2064   esac
2065
2066   # Add "good" languages from enable_stage1_languages to stage1_languages,
2067   # while "bad" languages go in missing_languages.  Leave no duplicates.
2068   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2069     case $potential_languages in
2070       *,$i,*)
2071         case $stage1_languages in
2072           *,$i,*) ;;
2073           *) stage1_languages="$stage1_languages$i," ;;
2074         esac ;;
2075       *)
2076         case $missing_languages in
2077           *,$i,*) ;;
2078           *) missing_languages="$missing_languages$i," ;;
2079         esac ;;
2080      esac
2081   done])
2082
2083   # Remove leading/trailing commas that were added for simplicity
2084   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2085   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2086   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2087   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2088
2089   if test "x$missing_languages" != x; then
2090     AC_MSG_ERROR([
2091 The following requested languages could not be built: ${missing_languages}
2092 Supported languages are: ${potential_languages}])
2093   fi
2094   if test "x$new_enable_languages" != "x$enable_languages"; then
2095     echo The following languages will be built: ${new_enable_languages}
2096     enable_languages="$new_enable_languages"
2097   fi
2098
2099   AC_SUBST(stage1_languages)
2100   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2101 fi
2102
2103 # Handle --disable-<component> generically.
2104 for dir in $configdirs $build_configdirs $target_configdirs ; do
2105   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2106   varname=`echo $dirname | sed -e s/+/_/g`
2107   if eval test x\${enable_${varname}} "=" xno ; then
2108     noconfigdirs="$noconfigdirs $dir"
2109   fi
2110 done
2111
2112 # Check for Boehm's garbage collector
2113 AC_ARG_ENABLE(objc-gc,
2114 [AS_HELP_STRING([--enable-objc-gc],
2115                 [enable use of Boehm's garbage collector with the
2116                  GNU Objective-C runtime])])
2117 AC_ARG_WITH([target-bdw-gc],
2118 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
2119                 [specify prefix directory for installed bdw-gc package.
2120                  Equivalent to --with-target-bdw-gc-include=PATH/include
2121                  plus --with-target-bdw-gc-lib=PATH/lib])])
2122 AC_ARG_WITH([target-bdw-gc-include],
2123 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
2124                 [specify directories for installed bdw-gc include files])])
2125 AC_ARG_WITH([target-bdw-gc-lib],
2126 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
2127                 [specify directories for installed bdw-gc library])])
2128
2129 case ,${enable_languages},:${enable_objc_gc} in *,objc,*:yes|*,objc,*:auto)
2130   AC_MSG_CHECKING([for bdw garbage collector])
2131   if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
2132     dnl no bdw-gw options, assume default locations
2133     AC_MSG_RESULT([using bdw-gc in default locations])
2134   else
2135     dnl bdw-gw options, first error checking, complete checking in libobjc
2136     if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
2137       AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
2138     elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
2139       AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
2140     else
2141       AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
2142     fi
2143   fi
2144 esac
2145
2146 # Disable libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2147 case ,${enable_languages}, in
2148   *,c++,*)
2149     # Disable libitm, libsanitizer if we're not building libstdc++
2150     case "${noconfigdirs}" in
2151       *target-libstdc++-v3*)
2152         noconfigdirs="$noconfigdirs target-libitm target-libsanitizer"
2153         ;;
2154       *) ;;
2155     esac
2156     ;;
2157   *)
2158     noconfigdirs="$noconfigdirs target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2159     ;;
2160 esac
2161
2162 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2163 # $build_configdirs and $target_configdirs.
2164 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2165
2166 notsupp=""
2167 for dir in . $skipdirs $noconfigdirs ; do
2168   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2169   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2170     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2171     if test -r $srcdir/$dirname/configure ; then
2172       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2173         true
2174       else
2175         notsupp="$notsupp $dir"
2176       fi
2177     fi
2178   fi
2179   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2180     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2181     if test -r $srcdir/$dirname/configure ; then
2182       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2183         true
2184       else
2185         notsupp="$notsupp $dir"
2186       fi
2187     fi
2188   fi
2189   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2190     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2191     if test -r $srcdir/$dirname/configure ; then
2192       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2193         true
2194       else
2195         notsupp="$notsupp $dir"
2196       fi
2197     fi
2198   fi
2199 done
2200
2201 # Quietly strip out all directories which aren't configurable in this tree.
2202 # This relies on all configurable subdirectories being autoconfiscated, which
2203 # is now the case.
2204 build_configdirs_all="$build_configdirs"
2205 build_configdirs=
2206 for i in ${build_configdirs_all} ; do
2207   j=`echo $i | sed -e s/build-//g`
2208   if test -f ${srcdir}/$j/configure ; then
2209     build_configdirs="${build_configdirs} $i"
2210   fi
2211 done
2212
2213 configdirs_all="$configdirs"
2214 configdirs=
2215 for i in ${configdirs_all} ; do
2216   if test -f ${srcdir}/$i/configure ; then
2217     configdirs="${configdirs} $i"
2218   fi
2219 done
2220
2221 target_configdirs_all="$target_configdirs"
2222 target_configdirs=
2223 for i in ${target_configdirs_all} ; do
2224   j=`echo $i | sed -e s/target-//g`
2225   if test -f ${srcdir}/$j/configure ; then
2226     target_configdirs="${target_configdirs} $i"
2227   fi
2228 done
2229
2230 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2231 # so we have to add it after the preceding checks.
2232 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2233 then
2234   case " $configdirs " in
2235     *" libiberty "*)
2236       # If we can build libiberty, we can also build libiberty-linker-plugin.
2237       configdirs="$configdirs libiberty-linker-plugin"
2238       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2239         --with-libiberty=../libiberty-linker-plugin";;
2240     *)
2241       AC_MSG_ERROR([libiberty missing]);;
2242   esac
2243 fi
2244
2245 # Sometimes we have special requirements for the host libiberty.
2246 extra_host_libiberty_configure_flags=
2247 extra_host_zlib_configure_flags=
2248 case " $configdirs " in
2249   *" lto-plugin "* | *" libcc1 "*)
2250     # When these are to be built as shared libraries, the same applies to
2251     # libiberty.
2252     extra_host_libiberty_configure_flags=--enable-shared
2253     ;;
2254   *" bfd "*)
2255     # When bfd is to be built as a shared library, the same applies to
2256     # zlib.
2257     if test "$enable_shared" = "yes"; then
2258       extra_host_zlib_configure_flags=--enable-host-shared
2259     fi
2260     ;;
2261 esac
2262 AC_SUBST(extra_host_libiberty_configure_flags)
2263 AC_SUBST(extra_host_zlib_configure_flags)
2264
2265 # Produce a warning message for the subdirs we can't configure.
2266 # This isn't especially interesting in the Cygnus tree, but in the individual
2267 # FSF releases, it's important to let people know when their machine isn't
2268 # supported by the one or two programs in a package.
2269
2270 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2271   # If $appdirs is non-empty, at least one of those directories must still
2272   # be configured, or we error out.  (E.g., if the gas release supports a
2273   # specified target in some subdirs but not the gas subdir, we shouldn't
2274   # pretend that all is well.)
2275   if test -n "$appdirs" ; then
2276     for dir in $appdirs ; do
2277       if test -r $dir/Makefile.in ; then
2278         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2279           appdirs=""
2280           break
2281         fi
2282         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2283           appdirs=""
2284           break
2285         fi
2286       fi
2287     done
2288     if test -n "$appdirs" ; then
2289       echo "*** This configuration is not supported by this package." 1>&2
2290       exit 1
2291     fi
2292   fi
2293   # Okay, some application will build, or we don't care to check.  Still
2294   # notify of subdirs not getting built.
2295   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2296   echo "    ${notsupp}" 1>&2
2297   echo "    (Any other directories should still work fine.)" 1>&2
2298 fi
2299
2300 case "$host" in
2301   *msdosdjgpp*)
2302     enable_gdbtk=no ;;
2303 esac
2304
2305 # To find our prefix, in gcc_cv_tool_prefix.
2306 ACX_TOOL_DIRS
2307
2308 copy_dirs=
2309
2310 AC_ARG_WITH([build-sysroot],
2311   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2312                   [use sysroot as the system root during the build])],
2313   [if test x"$withval" != x ; then
2314      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2315    fi],
2316   [SYSROOT_CFLAGS_FOR_TARGET=])
2317 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2318
2319 AC_ARG_WITH([debug-prefix-map],
2320   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2321                   [map A to B, C to D ... in debug information])],
2322   [if test x"$withval" != x; then
2323      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2324      for debug_map in $withval; do
2325        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2326      done
2327    fi],
2328   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2329 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2330
2331 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2332 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2333 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2334 # We want to ensure that TARGET libraries (which we know are built with
2335 # gcc) are built with "-O2 -g", so include those options when setting
2336 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2337 if test "x$CFLAGS_FOR_TARGET" = x; then
2338   if test "x${is_cross_compiler}" = xyes; then
2339     CFLAGS_FOR_TARGET="-g -O2"
2340   else
2341     CFLAGS_FOR_TARGET=$CFLAGS
2342     case " $CFLAGS " in
2343       *" -O2 "*) ;;
2344       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2345     esac
2346     case " $CFLAGS " in
2347       *" -g "* | *" -g3 "*) ;;
2348       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2349     esac
2350   fi
2351 fi
2352 AC_SUBST(CFLAGS_FOR_TARGET)
2353
2354 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2355   if test "x${is_cross_compiler}" = xyes; then
2356     CXXFLAGS_FOR_TARGET="-g -O2"
2357   else
2358     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2359     case " $CXXFLAGS " in
2360       *" -O2 "*) ;;
2361       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2362     esac
2363     case " $CXXFLAGS " in
2364       *" -g "* | *" -g3 "*) ;;
2365       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2366     esac
2367   fi
2368 fi
2369 AC_SUBST(CXXFLAGS_FOR_TARGET)
2370
2371 AC_SUBST(LDFLAGS_FOR_TARGET)
2372
2373 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2374 # the named directory are copied to $(tooldir)/sys-include.
2375 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2376   if test x${is_cross_compiler} = xno ; then
2377     echo 1>&2 '***' --with-headers is only supported when cross compiling
2378     exit 1
2379   fi
2380   if test x"${with_headers}" != xyes ; then
2381     x=${gcc_cv_tool_prefix}
2382     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2383   fi
2384 fi
2385
2386 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2387 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2388 # are permitted.
2389 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2390   if test x${is_cross_compiler} = xno ; then
2391     echo 1>&2 '***' --with-libs is only supported when cross compiling
2392     exit 1
2393   fi
2394   if test x"${with_libs}" != xyes ; then
2395     # Copy the libraries in reverse order, so that files in the first named
2396     # library override files in subsequent libraries.
2397     x=${gcc_cv_tool_prefix}
2398     for l in ${with_libs}; do
2399       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2400     done
2401   fi
2402 fi
2403
2404 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2405 #
2406 # This is done by determining whether or not the appropriate directory
2407 # is available, and by checking whether or not specific configurations
2408 # have requested that this magic not happen.
2409 #
2410 # The command line options always override the explicit settings in
2411 # configure.ac, and the settings in configure.ac override this magic.
2412 #
2413 # If the default for a toolchain is to use GNU as and ld, and you don't
2414 # want to do that, then you should use the --without-gnu-as and
2415 # --without-gnu-ld options for the configure script.  Similarly, if
2416 # the default is to use the included zlib and you don't want to do that,
2417 # you should use the --with-system-zlib option for the configure script.
2418
2419 if test x${use_gnu_as} = x &&
2420    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2421   with_gnu_as=yes
2422   extra_host_args="$extra_host_args --with-gnu-as"
2423 fi
2424
2425 if test x${use_gnu_ld} = x &&
2426    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2427   with_gnu_ld=yes
2428   extra_host_args="$extra_host_args --with-gnu-ld"
2429 fi
2430
2431 if test x${use_included_zlib} = x &&
2432    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2433   :
2434 else
2435   with_system_zlib=yes
2436   extra_host_args="$extra_host_args --with-system-zlib"
2437 fi
2438
2439 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2440 # can detect this case.
2441
2442 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2443   with_newlib=yes
2444   extra_host_args="$extra_host_args --with-newlib"
2445 fi
2446
2447 # Handle ${copy_dirs}
2448 set fnord ${copy_dirs}
2449 shift
2450 while test $# != 0 ; do
2451   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2452     :
2453   else
2454     echo Copying $1 to $2
2455
2456     # Use the install script to create the directory and all required
2457     # parent directories.
2458     if test -d $2 ; then
2459       :
2460     else
2461       echo >config.temp
2462       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2463     fi
2464
2465     # Copy the directory, assuming we have tar.
2466     # FIXME: Should we use B in the second tar?  Not all systems support it.
2467     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2468
2469     # It is the responsibility of the user to correctly adjust all
2470     # symlinks.  If somebody can figure out how to handle them correctly
2471     # here, feel free to add the code.
2472
2473     echo $1 > $2/COPIED
2474   fi
2475   shift; shift
2476 done
2477
2478 # Determine a target-dependent exec_prefix that the installed
2479 # gcc will search in.  Keep this list sorted by triplet, with
2480 # the *-*-osname triplets last.
2481 md_exec_prefix=
2482 case "${target}" in
2483   i[[34567]]86-pc-msdosdjgpp*)
2484     md_exec_prefix=/dev/env/DJDIR/bin
2485     ;;
2486   *-*-hpux* | \
2487   *-*-nto-qnx* | \
2488   *-*-solaris2*)
2489     md_exec_prefix=/usr/ccs/bin
2490     ;;
2491 esac
2492
2493 extra_arflags_for_target=
2494 extra_nmflags_for_target=
2495 extra_ranlibflags_for_target=
2496 target_makefile_frag=/dev/null
2497 case "${target}" in
2498   spu-*-*)
2499     target_makefile_frag="config/mt-spu"
2500     ;;
2501   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2502     target_makefile_frag="config/mt-sde"
2503     ;;
2504   mipsisa*-*-elfoabi*)
2505     target_makefile_frag="config/mt-mips-elfoabi"
2506     ;;
2507   mips*-*-*linux* | mips*-*-gnu*)
2508     target_makefile_frag="config/mt-mips-gnu"
2509     ;;
2510   nios2-*-elf*)
2511     target_makefile_frag="config/mt-nios2-elf"
2512     ;;
2513   *-*-linux-android*)
2514     target_makefile_frag="config/mt-android"
2515     ;;
2516   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2517     target_makefile_frag="config/mt-gnu"
2518     ;;
2519   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2520     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2521     # commands to handle both 32-bit and 64-bit objects.  These flags are
2522     # harmless if we're using GNU nm or ar.
2523     extra_arflags_for_target=" -X32_64"
2524     extra_nmflags_for_target=" -B -X32_64"
2525     ;;
2526 esac
2527
2528 alphaieee_frag=/dev/null
2529 case $target in
2530   alpha*-*-*)
2531     # This just makes sure to use the -mieee option to build target libs.
2532     # This should probably be set individually by each library.
2533     alphaieee_frag="config/mt-alphaieee"
2534     ;;
2535 esac
2536
2537 # If --enable-target-optspace always use -Os instead of -O2 to build
2538 # the target libraries, similarly if it is not specified, use -Os
2539 # on selected platforms.
2540 ospace_frag=/dev/null
2541 case "${enable_target_optspace}:${target}" in
2542   yes:*)
2543     ospace_frag="config/mt-ospace"
2544     ;;
2545   :d30v-*)
2546     ospace_frag="config/mt-d30v"
2547     ;;
2548   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2549     ospace_frag="config/mt-ospace"
2550     ;;
2551   no:* | :*)
2552     ;;
2553   *)
2554     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2555     ;;
2556 esac
2557
2558 # Some systems (e.g., one of the i386-aix systems the gas testers are
2559 # using) don't handle "\$" correctly, so don't use it here.
2560 tooldir='${exec_prefix}'/${target_noncanonical}
2561 build_tooldir=${tooldir}
2562
2563 # Create a .gdbinit file which runs the one in srcdir
2564 # and tells GDB to look there for source files.
2565
2566 if test -r ${srcdir}/.gdbinit ; then
2567   case ${srcdir} in
2568     .) ;;
2569     *) cat > ./.gdbinit <<EOF
2570 # ${NO_EDIT}
2571 dir ${srcdir}
2572 dir .
2573 source ${srcdir}/.gdbinit
2574 EOF
2575     ;;
2576   esac
2577 fi
2578
2579 # Make sure that the compiler is able to generate an executable.  If it
2580 # can't, we are probably in trouble.  We don't care whether we can run the
2581 # executable--we might be using a cross compiler--we only care whether it
2582 # can be created.  At this point the main configure script has set CC.
2583 we_are_ok=no
2584 echo "int main () { return 0; }" > conftest.c
2585 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2586 if test $? = 0 ; then
2587   if test -s conftest || test -s conftest.exe ; then
2588     we_are_ok=yes
2589   fi
2590 fi
2591 case $we_are_ok in
2592   no)
2593     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2594     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2595     rm -f conftest*
2596     exit 1
2597     ;;
2598 esac
2599 rm -f conftest*
2600
2601 # Decide which environment variable is used to find dynamic libraries.
2602 case "${host}" in
2603   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2604   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2605   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2606   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2607 esac
2608
2609 # On systems where the dynamic library environment variable is PATH,
2610 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2611 # built executables to PATH.
2612 if test "$RPATH_ENVVAR" = PATH; then
2613   GCC_SHLIB_SUBDIR=/shlib
2614 else
2615   GCC_SHLIB_SUBDIR=
2616 fi
2617
2618 # Adjust the toplevel makefile according to whether bootstrap was selected.
2619 case $enable_bootstrap in
2620   yes)
2621     bootstrap_suffix=bootstrap
2622     BUILD_CONFIG=bootstrap-debug
2623     ;;
2624   no)
2625     bootstrap_suffix=no-bootstrap
2626     BUILD_CONFIG=
2627     ;;
2628 esac
2629
2630 AC_MSG_CHECKING(for default BUILD_CONFIG)
2631
2632 AC_ARG_WITH([build-config],
2633   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2634                   [use config/NAME.mk build configuration])],
2635   [case $with_build_config in
2636    yes) with_build_config= ;;
2637    no) with_build_config= BUILD_CONFIG= ;;
2638    esac])
2639
2640 if test "x${with_build_config}" != x; then
2641   BUILD_CONFIG=$with_build_config
2642 else
2643   case $BUILD_CONFIG in
2644   bootstrap-debug)
2645     if echo "int f (void) { return 0; }" > conftest.c &&
2646        ${CC} -c conftest.c &&
2647        mv conftest.o conftest.o.g0 &&
2648        ${CC} -c -g conftest.c &&
2649        mv conftest.o conftest.o.g &&
2650        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2651       :
2652     else
2653       BUILD_CONFIG=
2654     fi
2655     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2656     ;;
2657   esac
2658 fi
2659 AC_MSG_RESULT($BUILD_CONFIG)
2660 AC_SUBST(BUILD_CONFIG)
2661
2662 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2663 AC_MSG_CHECKING([for --enable-vtable-verify])
2664 AC_ARG_ENABLE(vtable-verify,
2665 [AS_HELP_STRING([--enable-vtable-verify],
2666                 [Enable vtable verification feature])],
2667 [case "$enableval" in
2668  yes) enable_vtable_verify=yes ;;
2669  no)  enable_vtable_verify=no ;;
2670  *)   enable_vtable_verify=no;;
2671  esac],
2672 [enable_vtable_verify=no])
2673 AC_MSG_RESULT($enable_vtable_verify)
2674
2675 # Record target_configdirs and the configure arguments for target and
2676 # build configuration in Makefile.
2677 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2678 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2679 bootstrap_fixincludes=no
2680
2681 # If we are building libgomp, bootstrap it.
2682 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2683   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2684 fi
2685
2686 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2687 # or bootstrap-ubsan, bootstrap it.
2688 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2689   case "$BUILD_CONFIG" in
2690     *bootstrap-asan* | *bootstrap-ubsan* )
2691       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2692       bootstrap_fixincludes=yes
2693       ;;
2694   esac
2695 fi
2696
2697 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2698 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2699    test "$enable_vtable_verify" != no; then
2700   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2701 fi
2702
2703 # Determine whether gdb needs tk/tcl or not.
2704 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2705 # and in that case we want gdb to be built without tk.  Ugh!
2706 # In fact I believe gdb is the *only* package directly dependent on tk,
2707 # so we should be able to put the 'maybe's in unconditionally and
2708 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2709 # 100% sure that that's safe though.
2710
2711 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2712 case "$enable_gdbtk" in
2713   no)
2714     GDB_TK="" ;;
2715   yes)
2716     GDB_TK="${gdb_tk}" ;;
2717   *)
2718     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2719     # distro.  Eventually someone will fix this and move Insight, nee
2720     # gdbtk to a separate directory.
2721     if test -d ${srcdir}/gdb/gdbtk ; then
2722       GDB_TK="${gdb_tk}"
2723     else
2724       GDB_TK=""
2725     fi
2726     ;;
2727 esac
2728 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2729 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2730
2731 # Strip out unwanted targets.
2732
2733 # While at that, we remove Makefiles if we were started for recursive
2734 # configuration, so that the top-level Makefile reconfigures them,
2735 # like we used to do when configure itself was recursive.
2736
2737 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2738 # but now we're fixing up the Makefile ourselves with the additional
2739 # commands passed to AC_CONFIG_FILES.  Use separate variables
2740 # extrasub-{build,host,target} not because there is any reason to split
2741 # the substitutions up that way, but only to remain below the limit of
2742 # 99 commands in a script, for HP-UX sed.
2743
2744 # Do not nest @if/@endif or @unless/@endunless pairs, because
2745 # configure will not warn you at all.
2746
2747 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2748   yes:yes:*\ gold\ *:*,c++,*) ;;
2749   yes:yes:*\ gold\ *:*)
2750     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2751     ;;
2752 esac
2753
2754 extrasub_build=
2755 for module in ${build_configdirs} ; do
2756   if test -z "${no_recursion}" \
2757      && test -f ${build_subdir}/${module}/Makefile; then
2758     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2759     rm -f ${build_subdir}/${module}/Makefile
2760   fi
2761   extrasub_build="$extrasub_build
2762 /^@if build-$module\$/d
2763 /^@endif build-$module\$/d
2764 /^@unless build-$module\$/,/^@endunless build-$module\$/d
2765 /^@if build-$module-$bootstrap_suffix\$/d
2766 /^@endif build-$module-$bootstrap_suffix\$/d
2767 /^@unless build-$module-$bootstrap_suffix\$/,/^@endunless build-$module-$bootstrap_suffix\$/d"
2768 done
2769 extrasub_host=
2770 for module in ${configdirs} ; do
2771   if test -z "${no_recursion}"; then
2772     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2773       if test -f ${file}; then
2774         echo 1>&2 "*** removing ${file} to force reconfigure"
2775         rm -f ${file}
2776       fi
2777     done
2778   fi
2779   case ${module},${bootstrap_fixincludes} in
2780     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2781     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2782   esac
2783   extrasub_host="$extrasub_host
2784 /^@if $module\$/d
2785 /^@endif $module\$/d
2786 /^@unless $module\$/,/^@endunless $module\$/d
2787 /^@if $module-$host_bootstrap_suffix\$/d
2788 /^@endif $module-$host_bootstrap_suffix\$/d
2789 /^@unless $module-$host_bootstrap_suffix\$/,/^@endunless $module-$host_bootstrap_suffix\$/d"
2790 done
2791 extrasub_target=
2792 for module in ${target_configdirs} ; do
2793   if test -z "${no_recursion}" \
2794      && test -f ${target_subdir}/${module}/Makefile; then
2795     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2796     rm -f ${target_subdir}/${module}/Makefile
2797   fi
2798
2799   # We only bootstrap target libraries listed in bootstrap_target_libs.
2800   case $bootstrap_target_libs in
2801     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2802     *) target_bootstrap_suffix=no-bootstrap ;;
2803   esac
2804
2805   extrasub_target="$extrasub_target
2806 /^@if target-$module\$/d
2807 /^@endif target-$module\$/d
2808 /^@unless target-$module\$/,/^@endunless target-$module\$/d
2809 /^@if target-$module-$target_bootstrap_suffix\$/d
2810 /^@endif target-$module-$target_bootstrap_suffix\$/d
2811 /^@unless target-$module-$target_bootstrap_suffix\$/,/^@endunless target-$module-$target_bootstrap_suffix\$/d"
2812 done
2813
2814 # Do the final fixup along with target modules.
2815 extrasub_target="$extrasub_target
2816 /^@if /,/^@endif /d
2817 /^@unless /d
2818 /^@endunless /d"
2819
2820 # Create the serialization dependencies.  This uses a temporary file.
2821
2822 AC_ARG_ENABLE([serial-configure],
2823 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2824                 [force sequential configuration of
2825                  sub-packages for the host, target or build
2826                  machine, or all sub-packages])])
2827
2828 case ${enable_serial_configure} in
2829   yes)
2830     enable_serial_build_configure=yes
2831     enable_serial_host_configure=yes
2832     enable_serial_target_configure=yes
2833     ;;
2834 esac
2835
2836 # These force 'configure's to be done one at a time, to avoid problems
2837 # with contention over a shared config.cache.
2838 rm -f serdep.tmp
2839 echo '# serdep.tmp' > serdep.tmp
2840 olditem=
2841 test "x${enable_serial_build_configure}" = xyes &&
2842 for item in ${build_configdirs} ; do
2843   case ${olditem} in
2844     "") ;;
2845     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2846   esac
2847   olditem=${item}
2848 done
2849 olditem=
2850 test "x${enable_serial_host_configure}" = xyes &&
2851 for item in ${configdirs} ; do
2852   case ${olditem} in
2853     "") ;;
2854     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2855   esac
2856   olditem=${item}
2857 done
2858 olditem=
2859 test "x${enable_serial_target_configure}" = xyes &&
2860 for item in ${target_configdirs} ; do
2861   case ${olditem} in
2862     "") ;;
2863     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2864   esac
2865   olditem=${item}
2866 done
2867 serialization_dependencies=serdep.tmp
2868 AC_SUBST_FILE(serialization_dependencies)
2869
2870 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2871 # target, nonopt, and variable assignments.  These are the ones we
2872 # might not want to pass down to subconfigures.  The exception being
2873 # --cache-file=/dev/null, which is used to turn off the use of cache
2874 # files altogether, and which should be passed on to subconfigures.
2875 # Also strip program-prefix, program-suffix, and program-transform-name,
2876 # so that we can pass down a consistent program-transform-name.
2877 baseargs=
2878 tbaseargs=
2879 keep_next=no
2880 skip_next=no
2881 eval "set -- $ac_configure_args"
2882 for ac_arg
2883 do
2884   if test X"$skip_next" = X"yes"; then
2885     skip_next=no
2886     continue
2887   fi
2888   if test X"$keep_next" = X"yes"; then
2889     case $ac_arg in
2890       *\'*)
2891         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2892     esac
2893     baseargs="$baseargs '$ac_arg'"
2894     tbaseargs="$tbaseargs '$ac_arg'"
2895     keep_next=no
2896     continue
2897   fi
2898
2899   # Handle separated arguments.  Based on the logic generated by
2900   # autoconf 2.59.
2901   case $ac_arg in
2902     *=* | --config-cache | -C | -disable-* | --disable-* \
2903       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2904       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2905       | -with-* | --with-* | -without-* | --without-* | --x)
2906       separate_arg=no
2907       ;;
2908     -*)
2909       separate_arg=yes
2910       ;;
2911     *)
2912       separate_arg=no
2913       ;;
2914   esac
2915
2916   skip_targ=no
2917   case $ac_arg in
2918 changequote(,)
2919   --with-* | --without-*)
2920     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2921
2922     case $libopt in
2923     *[-_]include)
2924       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2925       ;;
2926     *[-_]lib)
2927       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2928       ;;
2929     *)
2930       lib=$libopt
2931       ;;
2932     esac
2933 changequote([,])
2934
2935     case $lib in
2936     mpc | mpfr | gmp | isl)
2937       # If we're processing --with-$lib, --with-$lib-include or
2938       # --with-$lib-lib, for one of the libs above, and target is
2939       # different from host, don't pass the current argument to any
2940       # target library's configure.
2941       if test x$is_cross_compiler = xyes; then
2942         skip_targ=yes
2943       fi
2944       ;;
2945     esac
2946     ;;
2947   esac
2948
2949   case "$ac_arg" in
2950     --cache-file=/dev/null | \
2951     -cache-file=/dev/null )
2952       # Handled here to avoid the test to skip args below.
2953       baseargs="$baseargs '$ac_arg'"
2954       tbaseargs="$tbaseargs '$ac_arg'"
2955       # Assert: $separate_arg should always be no.
2956       keep_next=$separate_arg
2957       ;;
2958     --no*)
2959       continue
2960       ;;
2961     --c* | \
2962     --sr* | \
2963     --ho* | \
2964     --bu* | \
2965     --t* | \
2966     --program-* | \
2967     -cache_file* | \
2968     -srcdir* | \
2969     -host* | \
2970     -build* | \
2971     -target* | \
2972     -program-prefix* | \
2973     -program-suffix* | \
2974     -program-transform-name* )
2975       skip_next=$separate_arg
2976       continue
2977       ;;
2978     -*)
2979       # An option.  Add it.
2980       case $ac_arg in
2981         *\'*)
2982           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2983       esac
2984       baseargs="$baseargs '$ac_arg'"
2985       if test X"$skip_targ" = Xno; then
2986         tbaseargs="$tbaseargs '$ac_arg'"
2987       fi
2988       keep_next=$separate_arg
2989       ;;
2990     *)
2991       # Either a variable assignment, or a nonopt (triplet).  Don't
2992       # pass it down; let the Makefile handle this.
2993       continue
2994       ;;
2995   esac
2996 done
2997 # Remove the initial space we just introduced and, as these will be
2998 # expanded by make, quote '$'.
2999 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3000
3001 # Add in --program-transform-name, after --program-prefix and
3002 # --program-suffix have been applied to it.  Autoconf has already
3003 # doubled dollar signs and backslashes in program_transform_name; we want
3004 # the backslashes un-doubled, and then the entire thing wrapped in single
3005 # quotes, because this will be expanded first by make and then by the shell.
3006 # Also, because we want to override the logic in subdir configure scripts to
3007 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3008 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3009 ${program_transform_name}
3010 EOF_SED
3011 gcc_transform_name=`cat conftestsed.out`
3012 rm -f conftestsed.out
3013 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3014 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3015 if test "$silent" = yes; then
3016   baseargs="$baseargs --silent"
3017   tbaseargs="$tbaseargs --silent"
3018 fi
3019 baseargs="$baseargs --disable-option-checking"
3020 tbaseargs="$tbaseargs --disable-option-checking"
3021
3022 # Record and document user additions to sub configure arguments.
3023 AC_ARG_VAR([build_configargs],
3024            [additional configure arguments for build directories])
3025 AC_ARG_VAR([host_configargs],
3026            [additional configure arguments for host directories])
3027 AC_ARG_VAR([target_configargs],
3028            [additional configure arguments for target directories])
3029
3030 # For the build-side libraries, we just need to pretend we're native,
3031 # and not use the same cache file.  Multilibs are neither needed nor
3032 # desired.  We can't even use the same cache file for all build-side
3033 # libraries, as they're compiled differently; some with C, some with
3034 # C++ or with different feature-enabling options.
3035 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3036
3037 # For host modules, accept cache file option, or specification as blank.
3038 case "${cache_file}" in
3039 "") # empty
3040   cache_file_option="" ;;
3041 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3042   cache_file_option="--cache-file=${cache_file}" ;;
3043 *) # relative path
3044   cache_file_option="--cache-file=../${cache_file}" ;;
3045 esac
3046
3047 # Host dirs don't like to share a cache file either, horribly enough.
3048 # This seems to be due to autoconf 2.5x stupidity.
3049 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3050
3051 target_configargs="$target_configargs ${tbaseargs}"
3052
3053 # Passing a --with-cross-host argument lets the target libraries know
3054 # whether they are being built with a cross-compiler or being built
3055 # native.  However, it would be better to use other mechanisms to make the
3056 # sorts of decisions they want to make on this basis.  Please consider
3057 # this option to be deprecated.  FIXME.
3058 if test x${is_cross_compiler} = xyes ; then
3059   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3060 fi
3061
3062 # Special user-friendly check for native x86_64-linux build, if
3063 # multilib is not explicitly enabled.
3064 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3065   x86_64-*linux*:yes:$build:$build:)
3066     # Make sure we have a development environment that handles 32-bit
3067     dev64=no
3068     echo "int main () { return 0; }" > conftest.c
3069     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3070     if test $? = 0 ; then
3071       if test -s conftest || test -s conftest.exe ; then
3072         dev64=yes
3073       fi
3074     fi
3075     rm -f conftest*
3076     if test x${dev64} != xyes ; then
3077       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.])
3078     fi
3079     ;;
3080 esac
3081
3082 # Default to --enable-multilib.
3083 if test x${enable_multilib} = x ; then
3084   target_configargs="--enable-multilib ${target_configargs}"
3085 fi
3086
3087 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3088 # changed from the earlier setting of with_newlib.
3089 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3090   target_configargs="--with-newlib ${target_configargs}"
3091 fi
3092
3093 # Different target subdirs use different values of certain variables
3094 # (notably CXX).  Worse, multilibs use *lots* of different values.
3095 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3096 # it doesn't automatically accept command-line overrides of them.
3097 # This means it's not safe for target subdirs to share a cache file,
3098 # which is disgusting, but there you have it.  Hopefully this can be
3099 # fixed in future.  It's still worthwhile to use a cache file for each
3100 # directory.  I think.
3101
3102 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3103 # We need to pass --target, as newer autoconf's requires consistency
3104 # for target_alias and gcc doesn't manage it consistently.
3105 target_configargs="--cache-file=./config.cache ${target_configargs}"
3106
3107 FLAGS_FOR_TARGET=
3108 case " $target_configdirs " in
3109  *" newlib "*)
3110   case " $target_configargs " in
3111   *" --with-newlib "*)
3112    case "$target" in
3113     *-cygwin*)
3114       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3115       ;;
3116    esac
3117
3118    # If we're not building GCC, don't discard standard headers.
3119    if test -d ${srcdir}/gcc; then
3120      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3121
3122      if test "${build}" != "${host}"; then
3123        # On Canadian crosses, CC_FOR_TARGET will have already been set
3124        # by `configure', so we won't have an opportunity to add -Bgcc/
3125        # to it.  This is right: we don't want to search that directory
3126        # for binaries, but we want the header files in there, so add
3127        # them explicitly.
3128        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3129
3130        # Someone might think of using the pre-installed headers on
3131        # Canadian crosses, in case the installed compiler is not fully
3132        # compatible with the compiler being built.  In this case, it
3133        # would be better to flag an error than risking having
3134        # incompatible object files being constructed.  We can't
3135        # guarantee that an error will be flagged, but let's hope the
3136        # compiler will do it, when presented with incompatible header
3137        # files.
3138      fi
3139    fi
3140
3141    case "${target}-${is_cross_compiler}" in
3142    i[[3456789]]86-*-linux*-no)
3143       # Here host == target, so we don't need to build gcc,
3144       # so we don't want to discard standard headers.
3145       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3146       ;;
3147    *)
3148       # If we're building newlib, use its generic headers last, but search
3149       # for any libc-related directories first (so make it the last -B
3150       # switch).
3151       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3152
3153       # If we're building libgloss, find the startup file, simulator library
3154       # and linker script.
3155       case " $target_configdirs " in
3156         *" libgloss "*)
3157         # Look for startup file, simulator library and maybe linker script.
3158         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3159         # Look for libnosys.a in case the target needs it.
3160         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3161         # Most targets have the linker script in the source directory.
3162         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3163         ;;
3164       esac
3165       ;;
3166    esac
3167    ;;
3168   esac
3169   ;;
3170 esac
3171
3172 case "$target" in
3173   x86_64-*mingw* | *-w64-mingw*)
3174   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3175   # however, use a symlink named 'mingw' in ${prefix} .
3176     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3177     ;;
3178   *-mingw*)
3179   # MinGW can't be handled as Cygwin above since it does not use newlib.
3180     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
3181     ;;
3182 esac
3183
3184 # Allow the user to override the flags for
3185 # our build compiler if desired.
3186 if test x"${build}" = x"${host}" ; then
3187   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3188   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3189   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3190 fi
3191
3192 # On Canadian crosses, we'll be searching the right directories for
3193 # the previously-installed cross compiler, so don't bother to add
3194 # flags for directories within the install tree of the compiler
3195 # being built; programs in there won't even run.
3196 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3197   # Search for pre-installed headers if nothing else fits.
3198   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3199 fi
3200
3201 if test "x${use_gnu_ld}" = x &&
3202    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3203   # Arrange for us to find uninstalled linker scripts.
3204   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3205 fi
3206
3207 # Search for other target-specific linker scripts and such.
3208 case "${target}" in
3209   mep*)
3210     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3211     ;;
3212 esac
3213
3214 # Makefile fragments.
3215 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3216 do
3217   eval fragval=\$$frag
3218   if test $fragval != /dev/null; then
3219     eval $frag=${srcdir}/$fragval
3220   fi
3221 done
3222 AC_SUBST_FILE(host_makefile_frag)
3223 AC_SUBST_FILE(target_makefile_frag)
3224 AC_SUBST_FILE(alphaieee_frag)
3225 AC_SUBST_FILE(ospace_frag)
3226
3227 # Miscellanea: directories, flags, etc.
3228 AC_SUBST(RPATH_ENVVAR)
3229 AC_SUBST(GCC_SHLIB_SUBDIR)
3230 AC_SUBST(tooldir)
3231 AC_SUBST(build_tooldir)
3232 AC_SUBST(CONFIGURE_GDB_TK)
3233 AC_SUBST(GDB_TK)
3234 AC_SUBST(INSTALL_GDB_TK)
3235
3236 # Build module lists & subconfigure args.
3237 AC_SUBST(build_configargs)
3238 AC_SUBST(build_configdirs)
3239
3240 # Host module lists & subconfigure args.
3241 AC_SUBST(host_configargs)
3242 AC_SUBST(configdirs)
3243 AC_SUBST(target_configdirs)
3244
3245 # Target module lists & subconfigure args.
3246 AC_SUBST(target_configargs)
3247
3248
3249 # Build tools.
3250 AC_SUBST(AR_FOR_BUILD)
3251 AC_SUBST(AS_FOR_BUILD)
3252 AC_SUBST(CC_FOR_BUILD)
3253 AC_SUBST(CFLAGS_FOR_BUILD)
3254 AC_SUBST(CXXFLAGS_FOR_BUILD)
3255 AC_SUBST(CXX_FOR_BUILD)
3256 AC_SUBST(DLLTOOL_FOR_BUILD)
3257 AC_SUBST(GFORTRAN_FOR_BUILD)
3258 AC_SUBST(GOC_FOR_BUILD)
3259 AC_SUBST(LDFLAGS_FOR_BUILD)
3260 AC_SUBST(LD_FOR_BUILD)
3261 AC_SUBST(NM_FOR_BUILD)
3262 AC_SUBST(RANLIB_FOR_BUILD)
3263 AC_SUBST(WINDMC_FOR_BUILD)
3264 AC_SUBST(WINDRES_FOR_BUILD)
3265
3266 # Generate default definitions for YACC, M4, LEX and other programs that run
3267 # on the build machine.  These are used if the Makefile can't locate these
3268 # programs in objdir.
3269 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3270
3271 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3272 case " $build_configdirs " in
3273   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3274 esac
3275
3276 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3277 case " $build_configdirs " in
3278   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3279 esac
3280
3281 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3282 case " $build_configdirs " in
3283   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3284 esac
3285
3286 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3287 case " $build_configdirs " in
3288   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3289   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3290 esac
3291
3292 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3293 case " $build_configdirs " in
3294   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3295 esac
3296
3297 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3298 case " $build_configdirs " in
3299   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3300   *)
3301 changequote(,)
3302     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3303     # higher, else we use the "missing" dummy.
3304     if ${MAKEINFO} --version \
3305        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3306       :
3307     else
3308       MAKEINFO="$MISSING makeinfo"
3309     fi
3310     ;;
3311 changequote([,])
3312 esac
3313
3314 # FIXME: expect and dejagnu may become build tools?
3315
3316 AC_CHECK_PROGS(EXPECT, expect, expect)
3317 case " $configdirs " in
3318   *" expect "*)
3319     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3320     ;;
3321 esac
3322
3323 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3324 case " $configdirs " in
3325   *" dejagnu "*)
3326     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3327     ;;
3328 esac
3329
3330
3331 # Host tools.
3332 NCN_STRICT_CHECK_TOOLS(AR, ar)
3333 NCN_STRICT_CHECK_TOOLS(AS, as)
3334 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3335 NCN_STRICT_CHECK_TOOLS(LD, ld)
3336 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3337 NCN_STRICT_CHECK_TOOLS(NM, nm)
3338 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3339 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3340 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3341 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3342 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3343 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3344 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3345 AC_SUBST(CC)
3346 AC_SUBST(CXX)
3347 AC_SUBST(CFLAGS)
3348 AC_SUBST(CXXFLAGS)
3349
3350 # Target tools.
3351 AC_ARG_WITH([build-time-tools],
3352   [AS_HELP_STRING([--with-build-time-tools=PATH],
3353                   [use given path to find target tools during the build])],
3354   [case x"$withval" in
3355      x/*) ;;
3356      *)
3357        with_build_time_tools=
3358        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3359        ;;
3360    esac],
3361   [with_build_time_tools=])
3362
3363 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3364 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3365 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3366 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3367 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3368
3369 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3370 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3371 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3372 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3373 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3374 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3375 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3376 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3377 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3378 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3379 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3380 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3381 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3382
3383 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3384
3385 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3386 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3387 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3388 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3389 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3390                 [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],
3391                 c++)
3392 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3393                 [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],
3394                 c++)
3395 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3396 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3397 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3398                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3399 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3400                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3401 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3402 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3403 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3404 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3405 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3406 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3407 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3408 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3409 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3410 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3411
3412 AC_SUBST(FLAGS_FOR_TARGET)
3413 AC_SUBST(RAW_CXX_FOR_TARGET)
3414
3415 # Certain tools may need extra flags.
3416 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3417 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3418 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3419
3420 # When building target libraries, except in a Canadian cross, we use
3421 # the same toolchain as the compiler we just built.
3422 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3423 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3424 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3425 if test $host = $build; then
3426   case " $configdirs " in
3427     *" gcc "*)
3428       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3429       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3430       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3431       ;;
3432   esac
3433 fi
3434
3435 AC_SUBST(COMPILER_AS_FOR_TARGET)
3436 AC_SUBST(COMPILER_LD_FOR_TARGET)
3437 AC_SUBST(COMPILER_NM_FOR_TARGET)
3438
3439 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3440 AC_ARG_ENABLE(maintainer-mode,
3441 [AS_HELP_STRING([--enable-maintainer-mode],
3442                 [enable make rules and dependencies not useful
3443                  (and sometimes confusing) to the casual installer])],
3444       USE_MAINTAINER_MODE=$enableval,
3445       USE_MAINTAINER_MODE=no)
3446 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3447 AC_SUBST(MAINTAINER_MODE_TRUE)
3448 AC_SUBST(MAINTAINER_MODE_FALSE)
3449 if test "$USE_MAINTAINER_MODE" = yes; then
3450   MAINTAINER_MODE_TRUE=
3451   MAINTAINER_MODE_FALSE='#'
3452 else
3453   MAINTAINER_MODE_TRUE='#'
3454   MAINTAINER_MODE_FALSE=
3455 fi
3456 MAINT=$MAINTAINER_MODE_TRUE
3457 AC_SUBST(MAINT)dnl
3458
3459 # ---------------------
3460 # GCC bootstrap support
3461 # ---------------------
3462
3463 # Stage specific cflags for build.
3464 stage1_cflags="-g"
3465 case $build in
3466   vax-*-*)
3467     case ${GCC} in
3468       yes) stage1_cflags="-g -Wa,-J" ;;
3469       *) stage1_cflags="-g -J" ;;
3470     esac ;;
3471 esac
3472
3473 AC_SUBST(stage1_cflags)
3474
3475 # Enable --enable-checking in stage1 of the compiler.
3476 AC_ARG_ENABLE(stage1-checking,
3477 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3478                 [choose additional checking for stage1 of the compiler])],
3479 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3480 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3481   # For --disable-checking or implicit --enable-checking=release, avoid
3482   # setting --enable-checking=gc in the default stage1 checking for LTO
3483   # bootstraps.  See PR62077.
3484   case $BUILD_CONFIG in
3485     *lto*)
3486       stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
3487     *)
3488       stage1_checking=--enable-checking=yes,types;;
3489   esac
3490   if test "x$enable_checking" = x && \
3491      test -d ${srcdir}/gcc && \
3492      test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3493     stage1_checking=--enable-checking=yes,types,extra
3494   fi
3495 else
3496   stage1_checking=--enable-checking=$enable_checking,types
3497 fi])
3498 AC_SUBST(stage1_checking)
3499
3500 # Enable -Werror in bootstrap stage2 and later.
3501 AC_ARG_ENABLE(werror,
3502 [AS_HELP_STRING([--enable-werror],
3503                 [enable -Werror in bootstrap stage2 and later])],
3504 [
3505 case ${enable_werror} in
3506   yes) stage2_werror_flag="--enable-werror-always" ;;
3507   *) stage2_werror_flag="" ;;
3508 esac
3509 ],
3510 [
3511 if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3512   case $BUILD_CONFIG in
3513   bootstrap-debug)
3514       stage2_werror_flag="--enable-werror-always" ;;
3515   "")
3516       stage2_werror_flag="--enable-werror-always" ;;
3517   esac
3518 fi
3519 ])
3520
3521 AC_SUBST(stage2_werror_flag)
3522
3523 # Specify what files to not compare during bootstrap.
3524
3525 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3526 case "$target" in
3527   hppa*64*-*-hpux*) ;;
3528   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/* | gcc/function-tests.o" ;;
3529   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3530 esac
3531 AC_SUBST(compare_exclusions)
3532
3533 AC_CONFIG_FILES([Makefile],
3534   [sed "$extrasub_build" Makefile |
3535    sed "$extrasub_host" |
3536    sed "$extrasub_target" > mf$$
3537    mv -f mf$$ Makefile],
3538   [extrasub_build="$extrasub_build"
3539    extrasub_host="$extrasub_host"
3540    extrasub_target="$extrasub_target"])
3541 AC_OUTPUT