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 m4_include([config/pkg.m4])
  33
  34 AC_INIT(move-if-change)
  35 AC_PREREQ(2.64)
  36 AC_DISABLE_OPTION_CHECKING
  37
  38 progname=$0
  39 # if PWD already has a value, it is probably wrong.
  40 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  41
  42 # Export original configure arguments for use by sub-configures.
  43 # Quote arguments with shell meta charatcers.
  44 TOPLEVEL_CONFIGURE_ARGUMENTS=
  45 set -- "$progname" "$@"
  46 for ac_arg
  47 do
  48   case "$ac_arg" in
  49   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  50     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  51     # if the argument is of the form -foo=baz, quote the baz part only
  52     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  53   *) ;;
  54   esac
  55   # Add the quoted argument to the list.
  56   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  57 done
  58 if test "$silent" = yes; then
  59   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  60 fi
  61 # Remove the initial space we just introduced and, as these will be
  62 # expanded by make, quote '$'.
  63 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  64 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  65
  66 # Find the build, host, and target systems.
  67 ACX_NONCANONICAL_BUILD
  68 ACX_NONCANONICAL_HOST
  69 ACX_NONCANONICAL_TARGET
  70
  71 dnl Autoconf 2.5x and later will set a default program prefix if
  72 dnl --target was used, even if it was the same as --host.  Disable
  73 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  74 dnl to take effect.
  75 test "$host_noncanonical" = "$target_noncanonical" &&
  76   test "$program_prefix$program_suffix$program_transform_name" = \
  77     NONENONEs,x,x, &&
  78   program_transform_name=s,y,y,
  79
  80 AC_CANONICAL_SYSTEM
  81 AC_ARG_PROGRAM
  82
  83 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  84 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  85
  86 # Get 'install' or 'install-sh' and its variants.
  87 AC_PROG_INSTALL
  88 ACX_PROG_LN
  89 AC_PROG_LN_S
  90 AC_PROG_SED
  91 AC_PROG_AWK
  92
  93 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  94
  95 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  96 # a relative path.
  97 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  98   INSTALL="${srcpwd}/install-sh -c"
  99 fi
 100
 101 # Set srcdir to "." if that's what it is.
 102 # This is important for multilib support.
 103 pwd=`${PWDCMD-pwd}`
 104 if test "${pwd}" = "${srcpwd}" ; then
 105   srcdir=.
 106 fi
 107
 108 topsrcdir=$srcpwd
 109
 110 extra_host_args=
 111
 112 ### To add a new directory to the tree, first choose whether it is a target
 113 ### or a host dependent tool.  Then put it into the appropriate list
 114 ### (library or tools, host or target), doing a dependency sort.
 115
 116 # Subdirs will be configured in the order listed in build_configdirs,
 117 # configdirs, or target_configdirs; see the serialization section below.
 118
 119 # Dependency sorting is only needed when *configuration* must be done in
 120 # a particular order.  In all cases a dependency should be specified in
 121 # the Makefile, whether or not it's implicitly specified here.
 122
 123 # Double entries in build_configdirs, configdirs, or target_configdirs may
 124 # cause circular dependencies and break everything horribly.
 125
 126 # these library is used by various programs built for the build
 127 # environment
 128 #
 129 build_libs="build-libiberty build-libcpp"
 130
 131 # these tools are built for the build environment
 132 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 133
 134 # these libraries are used by various programs built for the host environment
 135 #f
 136 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl libelf libiconv"
 137
 138 # these tools are built for the host environment
 139 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 140 # know that we are building the simulator.
 141 # binutils, gas and ld appear in that order because it makes sense to run
 142 # "make check" in that particular order.
 143 # If --enable-gold is used, "gold" may replace "ld".
 144 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
 145
 146 # these libraries are built for the target environment, and are built after
 147 # the host libraries and the host tools (which may be a cross compiler)
 148 # Note that libiberty is not a target library.
 149 target_libraries="target-libgcc \
 150                 target-libbacktrace \
 151                 target-libgloss \
 152                 target-newlib \
 153                 target-libgomp \
 154                 target-libcilkrts \
 155                 target-liboffloadmic \
 156                 target-libatomic \
 157                 target-libitm \
 158                 target-libstdc++-v3 \
 159                 target-libsanitizer \
 160                 target-libvtv \
 161                 target-libmpx \
 162                 target-libssp \
 163                 target-libquadmath \
 164                 target-libgfortran \
 165                 target-libffi \
 166                 target-libobjc \
 167                 target-libada \
 168                 target-libgo"
 169
 170 # these tools are built using the target libraries, and are intended to
 171 # run only in the target environment
 172 #
 173 # note: any program that *uses* libraries that are in the "target_libraries"
 174 # list belongs in this list.
 175 #
 176 target_tools="target-rda"
 177
 178 ################################################################################
 179
 180 ## All tools belong in one of the four categories, and are assigned above
 181 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 182 ## is important because configure will choke if they ever get through.
 183 ## ${configdirs} is directories we build using the host tools.
 184 ## ${target_configdirs} is directories we build using the target tools.
 185 configdirs=`echo ${host_libs} ${host_tools}`
 186 target_configdirs=`echo ${target_libraries} ${target_tools}`
 187 build_configdirs=`echo ${build_libs} ${build_tools}`
 188
 189 m4_divert_text([PARSE_ARGS],
 190 [case $srcdir in
 191   *" "*)
 192 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 193     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 194 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 195     ;;
 196 esac
 197 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 198 ])
 199
 200 ################################################################################
 201
 202 srcname="gnu development package"
 203
 204 # This gets set non-empty for some net releases of packages.
 205 appdirs=""
 206
 207 # Define is_cross_compiler to save on calls to 'test'.
 208 is_cross_compiler=
 209 if test x"${host}" = x"${target}" ; then
 210   is_cross_compiler=no
 211 else
 212   is_cross_compiler=yes
 213 fi
 214
 215 # Find the build and target subdir names.
 216 GCC_TOPLEV_SUBDIRS
 217 # Be sure to cover against remnants of an in-tree build.
 218 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 219   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 220 Use a pristine source tree when building in a separate tree])
 221 fi
 222
 223 # Skipdirs are removed silently.
 224 skipdirs=
 225 # Noconfigdirs are removed loudly.
 226 noconfigdirs=""
 227
 228 use_gnu_ld=
 229 # Make sure we don't let GNU ld be added if we didn't want it.
 230 if test x$with_gnu_ld = xno ; then
 231   use_gnu_ld=no
 232   noconfigdirs="$noconfigdirs ld gold"
 233 fi
 234
 235 use_gnu_as=
 236 # Make sure we don't let GNU as be added if we didn't want it.
 237 if test x$with_gnu_as = xno ; then
 238   use_gnu_as=no
 239   noconfigdirs="$noconfigdirs gas"
 240 fi
 241
 242 use_included_zlib=
 243 AC_ARG_WITH(system-zlib,
 244 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
 245 # Make sure we don't let ZLIB be added if we didn't want it.
 246 if test x$with_system_zlib = xyes ; then
 247   use_included_zlib=no
 248   noconfigdirs="$noconfigdirs zlib"
 249 fi
 250
 251 # some tools are so dependent upon X11 that if we're not building with X,
 252 # it's not even worth trying to configure, much less build, that tool.
 253
 254 case ${with_x} in
 255   yes | "") ;; # the default value for this tree is that X11 is available
 256   no)
 257     skipdirs="${skipdirs} tk itcl libgui"
 258     # We won't be able to build gdbtk without X.
 259     enable_gdbtk=no
 260     ;;
 261   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 262 esac
 263
 264 # Some are only suitable for cross toolchains.
 265 # Remove these if host=target.
 266 cross_only="target-libgloss target-newlib target-opcodes"
 267
 268 case $is_cross_compiler in
 269   no) skipdirs="${skipdirs} ${cross_only}" ;;
 270 esac
 271
 272 # If both --with-headers and --with-libs are specified, default to
 273 # --without-newlib.
 274 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 275    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 276   if test x"${with_newlib}" = x ; then
 277     with_newlib=no
 278   fi
 279 fi
 280
 281 # Recognize --with-newlib/--without-newlib.
 282 case ${with_newlib} in
 283   no) skipdirs="${skipdirs} target-newlib" ;;
 284   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 285 esac
 286
 287 AC_ARG_ENABLE(as-accelerator-for,
 288 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 289                 [build as offload target compiler.
 290                 Specify offload host triple by ARG])])
 291
 292 AC_ARG_ENABLE(offload-targets,
 293 [AS_HELP_STRING([--enable-offload-targets=LIST],
 294                 [enable offloading to devices from comma-separated LIST of
 295                 TARGET[=DIR]. Use optional path to find offload target compiler
 296                 during the build])],
 297 [
 298   if test x"$enable_offload_targets" = x; then
 299     AC_MSG_ERROR([no offload targets specified])
 300   fi
 301 ], [enable_offload_targets=])
 302
 303 # Handle --enable-gold, --enable-ld.
 304 # --disable-gold [--enable-ld]
 305 #     Build only ld.  Default option.
 306 # --enable-gold [--enable-ld]
 307 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 308 #     as "ld.bfd" and "ld".
 309 # --enable-gold=default [--enable-ld]
 310 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 311 #     install ld as "ld.bfd".
 312 # --enable-gold[=default] --disable-ld
 313 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 314 # --enable-gold --enable-ld=default
 315 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 316 #     and ld.bfd).
 317 #     In other words, ld is default
 318 # --enable-gold=default --enable-ld=default
 319 #     Error.
 320
 321 default_ld=
 322 AC_ARG_ENABLE(gold,
 323 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 324                 [build gold @<:@ARG={default,yes,no}@:>@])],
 325 ENABLE_GOLD=$enableval,
 326 ENABLE_GOLD=no)
 327 case "${ENABLE_GOLD}" in
 328   yes|default)
 329     # Check for ELF target.
 330     is_elf=no
 331     case "${target}" in
 332       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 333       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 334       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 335       | *-*-solaris2* | *-*-nto* | *-*-nacl*)
 336         case "${target}" in
 337           *-*-linux*aout* | *-*-linux*oldld*)
 338             ;;
 339           *)
 340             is_elf=yes
 341             ;;
 342         esac
 343     esac
 344
 345     if test "$is_elf" = "yes"; then
 346       # Check for target supported by gold.
 347       case "${target}" in
 348         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 349         | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
 350           configdirs="$configdirs gold"
 351           if test x${ENABLE_GOLD} = xdefault; then
 352             default_ld=gold
 353           fi
 354           ENABLE_GOLD=yes
 355           ;;
 356       esac
 357     fi
 358     ;;
 359   no)
 360     ;;
 361   *)
 362     AC_MSG_ERROR([invalid --enable-gold argument])
 363     ;;
 364 esac
 365
 366 AC_ARG_ENABLE(ld,
 367 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 368                 [build ld @<:@ARG={default,yes,no}@:>@])],
 369 ENABLE_LD=$enableval,
 370 ENABLE_LD=yes)
 371
 372 case "${ENABLE_LD}" in
 373   default)
 374     if test x${default_ld} != x; then
 375       AC_MSG_ERROR([either gold or ld can be the default ld])
 376     fi
 377     ;;
 378   yes)
 379     ;;
 380   no)
 381     if test x${ENABLE_GOLD} != xyes; then
 382       AC_MSG_WARN([neither ld nor gold are enabled])
 383     fi
 384     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 385     ;;
 386   *)
 387     AC_MSG_ERROR([invalid --enable-ld argument])
 388     ;;
 389 esac
 390
 391 # PR gas/19109
 392 # Decide the default method for compressing debug sections.
 393 # Provide a configure time option to override our default.
 394 AC_ARG_ENABLE(compressed_debug_sections,
 395 [AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
 396                 [Enable compressed debug sections for gas, gold or ld by
 397                  default])],
 398 [
 399   if test x"$enable_compressed_debug_sections" = xyes; then
 400     AC_MSG_ERROR([no program with compressed debug sections specified])
 401   fi
 402 ], [enable_compressed_debug_sections=])
 403
 404 # Configure extra directories which are host specific
 405
 406 case "${host}" in
 407   *-cygwin*)
 408     configdirs="$configdirs libtermcap" ;;
 409 esac
 410
 411 # A target can indicate whether a language isn't supported for some reason.
 412 # Only spaces may be used in this macro; not newlines or tabs.
 413 unsupported_languages=
 414
 415 # Remove more programs from consideration, based on the host or
 416 # target this usually means that a port of the program doesn't
 417 # exist yet.
 418
 419 case "${host}" in
 420   i[[3456789]]86-*-msdosdjgpp*)
 421     noconfigdirs="$noconfigdirs tcl tk itcl"
 422     ;;
 423 esac
 424
 425
 426 AC_ARG_ENABLE(libquadmath,
 427 AS_HELP_STRING([--disable-libquadmath],
 428   [do not build libquadmath directory]),
 429 ENABLE_LIBQUADMATH=$enableval,
 430 ENABLE_LIBQUADMATH=yes)
 431 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 432   noconfigdirs="$noconfigdirs target-libquadmath"
 433 fi
 434
 435
 436 AC_ARG_ENABLE(libquadmath-support,
 437 AS_HELP_STRING([--disable-libquadmath-support],
 438   [disable libquadmath support for Fortran]),
 439 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 440 ENABLE_LIBQUADMATH_SUPPORT=yes)
 441 enable_libquadmath_support=
 442 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 443   enable_libquadmath_support=no
 444 fi
 445
 446
 447 AC_ARG_ENABLE(libada,
 448 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 449 ENABLE_LIBADA=$enableval,
 450 ENABLE_LIBADA=yes)
 451 if test "${ENABLE_LIBADA}" != "yes" ; then
 452   noconfigdirs="$noconfigdirs gnattools"
 453 fi
 454
 455 AC_ARG_ENABLE(libssp,
 456 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 457 ENABLE_LIBSSP=$enableval,
 458 ENABLE_LIBSSP=yes)
 459
 460 AC_ARG_ENABLE(libstdcxx,
 461 AS_HELP_STRING([--disable-libstdcxx],
 462   [do not build libstdc++-v3 directory]),
 463 ENABLE_LIBSTDCXX=$enableval,
 464 ENABLE_LIBSTDCXX=default)
 465 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 466   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 467 fi]
 468
 469 # If this is accelerator compiler and its target is intelmic we enable
 470 # target liboffloadmic by default.  If this is compiler with offloading
 471 # for intelmic we enable host liboffloadmic by default.  Otherwise
 472 # liboffloadmic is disabled by default.
 473 AC_ARG_ENABLE([liboffloadmic],
 474 AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
 475                [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
 476 [case "$enableval" in
 477   no | host | target)
 478     enable_liboffloadmic=$enableval ;;
 479   *)
 480     AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
 481 esac],
 482 [if test x"$enable_as_accelerator_for" != x; then
 483   case "${target}" in
 484     *-intelmic-* | *-intelmicemul-*)
 485       enable_liboffloadmic=target
 486       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
 487       ;;
 488     *)
 489       enable_liboffloadmic=no
 490       ;;
 491   esac
 492 else
 493   case "${enable_offload_targets}" in
 494     *-intelmic-* | *-intelmicemul-*)
 495       enable_liboffloadmic=host
 496       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
 497       ;;
 498     *)
 499       enable_liboffloadmic=no
 500       ;;
 501     esac
 502 fi])
 503 AC_SUBST(extra_liboffloadmic_configure_flags)
 504
 505 # Enable libgomp by default on hosted POSIX systems, and a few others.
 506 if test x$enable_libgomp = x ; then
 507     case "${target}" in
 508     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 509         ;;
 510     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 511         ;;
 512     *-*-solaris2* | *-*-hpux11*)
 513         ;;
 514     *-*-darwin* | *-*-aix*)
 515         ;;
 516     nvptx*-*-*)
 517         ;;
 518     *)
 519         noconfigdirs="$noconfigdirs target-libgomp"
 520         ;;
 521     esac
 522 fi
 523
 524 # Disable libatomic on unsupported systems.
 525 if test -d ${srcdir}/libatomic; then
 526     if test x$enable_libatomic = x; then
 527         AC_MSG_CHECKING([for libatomic support])
 528         if (srcdir=${srcdir}/libatomic; \
 529                 . ${srcdir}/configure.tgt; \
 530                 test -n "$UNSUPPORTED")
 531         then
 532             AC_MSG_RESULT([no])
 533             noconfigdirs="$noconfigdirs target-libatomic"
 534         else
 535             AC_MSG_RESULT([yes])
 536         fi
 537     fi
 538 fi
 539
 540 # Disable libcilkrts on unsupported systems.
 541 if test -d ${srcdir}/libcilkrts; then
 542     if test x$enable_libcilkrts = x; then
 543         AC_MSG_CHECKING([for libcilkrts support])
 544         if (srcdir=${srcdir}/libcilkrts; \
 545                 . ${srcdir}/configure.tgt; \
 546                 test -n "$UNSUPPORTED")
 547         then
 548             AC_MSG_RESULT([no])
 549             noconfigdirs="$noconfigdirs target-libcilkrts"
 550         else
 551             AC_MSG_RESULT([yes])
 552         fi
 553     fi
 554 fi
 555
 556 # Disable liboffloadmic on unsupported systems.
 557 if test -d ${srcdir}/liboffloadmic; then
 558     if test x$enable_liboffloadmic != xno; then
 559         AC_MSG_CHECKING([for liboffloadmic support])
 560         if (srcdir=${srcdir}/liboffloadmic; \
 561                 . ${srcdir}/configure.tgt; \
 562                 test -n "$UNSUPPORTED")
 563         then
 564             AC_MSG_RESULT([no])
 565             noconfigdirs="$noconfigdirs target-liboffloadmic"
 566         else
 567             AC_MSG_RESULT([yes])
 568         fi
 569     fi
 570 fi
 571
 572 # Disable libitm on unsupported systems.
 573 if test -d ${srcdir}/libitm; then
 574     if test x$enable_libitm = x; then
 575         AC_MSG_CHECKING([for libitm support])
 576         if (srcdir=${srcdir}/libitm; \
 577                 . ${srcdir}/configure.tgt; \
 578                 test -n "$UNSUPPORTED")
 579         then
 580             AC_MSG_RESULT([no])
 581             noconfigdirs="$noconfigdirs target-libitm"
 582         else
 583             AC_MSG_RESULT([yes])
 584         fi
 585     fi
 586 fi
 587
 588 # Disable libsanitizer on unsupported systems.
 589 if test -d ${srcdir}/libsanitizer; then
 590     if test x$enable_libsanitizer = x; then
 591         AC_MSG_CHECKING([for libsanitizer support])
 592         if (srcdir=${srcdir}/libsanitizer; \
 593                 . ${srcdir}/configure.tgt; \
 594                 test -n "$UNSUPPORTED")
 595         then
 596             AC_MSG_RESULT([no])
 597             noconfigdirs="$noconfigdirs target-libsanitizer"
 598         else
 599             AC_MSG_RESULT([yes])
 600         fi
 601     fi
 602 fi
 603
 604 # Disable libvtv on unsupported systems.
 605 if test -d ${srcdir}/libvtv; then
 606     if test x$enable_libvtv = x; then
 607         AC_MSG_CHECKING([for libvtv support])
 608         if (srcdir=${srcdir}/libvtv; \
 609                 . ${srcdir}/configure.tgt; \
 610                 test "$VTV_SUPPORTED" != "yes")
 611         then
 612             AC_MSG_RESULT([no])
 613             noconfigdirs="$noconfigdirs target-libvtv"
 614         else
 615             AC_MSG_RESULT([yes])
 616         fi
 617     fi
 618 fi
 619
 620
 621 # Enable libmpx on supported systems by request.
 622 if test -d ${srcdir}/libmpx; then
 623     if test x$enable_libmpx = x; then
 624        AC_MSG_CHECKING([for libmpx support])
 625        if (srcdir=${srcdir}/libmpx; \
 626                . ${srcdir}/configure.tgt; \
 627                test "$LIBMPX_SUPPORTED" != "yes")
 628        then
 629            AC_MSG_RESULT([no])
 630            noconfigdirs="$noconfigdirs target-libmpx"
 631        else
 632            AC_MSG_RESULT([yes])
 633        fi
 634     fi
 635 fi
 636
 637
 638
 639 # Disable libquadmath for some systems.
 640 case "${target}" in
 641   avr-*-*)
 642     noconfigdirs="$noconfigdirs target-libquadmath"
 643     ;;
 644   # libquadmath is unused on AIX and libquadmath build process use of
 645   # LD_LIBRARY_PATH can break AIX bootstrap.
 646   powerpc-*-aix* | rs6000-*-aix*)
 647     noconfigdirs="$noconfigdirs target-libquadmath"
 648     ;;
 649 esac
 650
 651 # Disable libssp for some systems.
 652 case "${target}" in
 653   avr-*-*)
 654     # No hosted I/O support.
 655     noconfigdirs="$noconfigdirs target-libssp"
 656     ;;
 657   powerpc-*-aix* | rs6000-*-aix*)
 658     noconfigdirs="$noconfigdirs target-libssp"
 659     ;;
 660   rl78-*-*)
 661     # libssp uses a misaligned load to trigger a fault, but the RL78
 662     # doesn't fault for those - instead, it gives a build-time error
 663     # for explicit misaligned loads.
 664     noconfigdirs="$noconfigdirs target-libssp"
 665     ;;
 666   visium-*-*)
 667     # No hosted I/O support.
 668     noconfigdirs="$noconfigdirs target-libssp"
 669     ;;
 670 esac
 671
 672 # Disable libstdc++-v3 for some systems.
 673 # Allow user to override this if they pass --enable-libstdc++-v3
 674 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 675   case "${target}" in
 676     *-*-vxworks*)
 677       # VxWorks uses the Dinkumware C++ library.
 678       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 679       ;;
 680     arm*-wince-pe*)
 681       # the C++ libraries don't build on top of CE's C libraries
 682       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 683       ;;
 684     avr-*-*)
 685       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 686       ;;
 687     ft32-*-*)
 688       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 689       ;;
 690   esac
 691 fi
 692
 693 # Disable Fortran for some systems.
 694 case "${target}" in
 695   mmix-*-*)
 696     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 697     unsupported_languages="$unsupported_languages fortran"
 698     ;;
 699 esac
 700
 701 # Disable libffi for some systems.
 702 case "${target}" in
 703   powerpc-*-darwin*)
 704     ;;
 705   i[[3456789]]86-*-darwin*)
 706     ;;
 707   x86_64-*-darwin[[912]]*)
 708     ;;
 709   *-*-darwin*)
 710     noconfigdirs="$noconfigdirs target-libffi"
 711     ;;
 712   *-*-netware*)
 713     noconfigdirs="$noconfigdirs target-libffi"
 714     ;;
 715   *-*-phoenix*)
 716     noconfigdirs="$noconfigdirs target-libffi"
 717     ;;
 718   *-*-rtems*)
 719     noconfigdirs="$noconfigdirs target-libffi"
 720     ;;
 721   *-*-tpf*)
 722     noconfigdirs="$noconfigdirs target-libffi"
 723     ;;
 724   *-*-uclinux*)
 725     noconfigdirs="$noconfigdirs target-libffi"
 726     ;;
 727   *-*-vxworks*)
 728     noconfigdirs="$noconfigdirs target-libffi"
 729     ;;
 730   aarch64*-*-freebsd*)
 731     noconfigdirs="$noconfigdirs target-libffi"
 732     ;;
 733   alpha*-*-*vms*)
 734     noconfigdirs="$noconfigdirs target-libffi"
 735     ;;
 736   arm*-*-freebsd*)
 737     noconfigdirs="$noconfigdirs target-libffi"
 738     ;;
 739   arm-wince-pe)
 740     noconfigdirs="$noconfigdirs target-libffi"
 741     ;;
 742   arm*-*-symbianelf*)
 743     noconfigdirs="$noconfigdirs target-libffi"
 744     ;;
 745   cris-*-* | crisv32-*-*)
 746     case "${target}" in
 747       *-*-linux*)
 748         ;;
 749       *) # See PR46792 regarding target-libffi.
 750         noconfigdirs="$noconfigdirs target-libffi";;
 751     esac
 752     ;;
 753   hppa*64*-*-hpux*)
 754     noconfigdirs="$noconfigdirs target-libffi"
 755     ;;
 756   hppa*-hp-hpux11*)
 757     ;;
 758   hppa*-*-hpux*)
 759     noconfigdirs="$noconfigdirs target-libffi"
 760     ;;
 761   ia64*-*-*vms*)
 762     noconfigdirs="$noconfigdirs target-libffi"
 763     ;;
 764   i[[3456789]]86-w64-mingw*)
 765     noconfigdirs="$noconfigdirs target-libffi"
 766     ;;
 767   i[[3456789]]86-*-mingw*)
 768     noconfigdirs="$noconfigdirs target-libffi"
 769     ;;
 770   x86_64-*-mingw*)
 771     noconfigdirs="$noconfigdirs target-libffi"
 772     ;;
 773   mmix-*-*)
 774     noconfigdirs="$noconfigdirs target-libffi"
 775     ;;
 776   powerpc-*-aix*)
 777     # copied from rs6000-*-* entry
 778     noconfigdirs="$noconfigdirs target-libffi"
 779     ;;
 780   rs6000-*-aix*)
 781     noconfigdirs="$noconfigdirs target-libffi"
 782     ;;
 783   ft32-*-*)
 784     noconfigdirs="$noconfigdirs target-libffi"
 785     ;;
 786   *-*-lynxos*)
 787     noconfigdirs="$noconfigdirs target-libffi"
 788     ;;
 789 esac
 790
 791 # Disable the go frontend on systems where it is known to not work. Please keep
 792 # this in sync with contrib/config-list.mk.
 793 case "${target}" in
 794 *-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
 795     unsupported_languages="$unsupported_languages go"
 796     ;;
 797 esac
 798
 799 # Disable libgo for some systems where it is known to not work.
 800 # For testing, you can easily override this with --enable-libgo.
 801 if test x$enable_libgo = x; then
 802     case "${target}" in
 803     *-*-darwin*)
 804         # PR 46986
 805         noconfigdirs="$noconfigdirs target-libgo"
 806         ;;
 807     *-*-cygwin* | *-*-mingw*)
 808         noconfigdirs="$noconfigdirs target-libgo"
 809         ;;
 810     *-*-aix*)
 811         noconfigdirs="$noconfigdirs target-libgo"
 812         ;;
 813     esac
 814 fi
 815
 816 # Default libgloss CPU subdirectory.
 817 libgloss_dir="$target_cpu"
 818
 819 case "${target}" in
 820   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 821     libgloss_dir=wince
 822     ;;
 823   aarch64*-*-* )
 824     libgloss_dir=aarch64
 825     ;;
 826   arm*-*-*)
 827     libgloss_dir=arm
 828     ;;
 829   cris-*-* | crisv32-*-*)
 830     libgloss_dir=cris
 831     ;;
 832   hppa*-*-*)
 833     libgloss_dir=pa
 834     ;;
 835   i[[3456789]]86-*-*)
 836     libgloss_dir=i386
 837     ;;
 838   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 839     libgloss_dir=m68hc11
 840     ;;
 841   m68*-*-* | fido-*-*)
 842     libgloss_dir=m68k
 843     ;;
 844   mips*-*-*)
 845     libgloss_dir=mips
 846     ;;
 847   powerpc*-*-*)
 848     libgloss_dir=rs6000
 849     ;;
 850   sparc*-*-*)
 851     libgloss_dir=sparc
 852     ;;
 853 esac
 854
 855 # Disable newlib and libgloss for various target OSes.
 856 case "${target}" in
 857   alpha*-dec-osf*)
 858     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 859     ;;
 860   i[[3456789]]86-*-linux*)
 861     # This section makes it possible to build newlib natively on linux.
 862     # If we are using a cross compiler then don't configure newlib.
 863     if test x${is_cross_compiler} != xno ; then
 864       noconfigdirs="$noconfigdirs target-newlib"
 865     fi
 866     noconfigdirs="$noconfigdirs target-libgloss"
 867     # If we are not using a cross compiler, do configure newlib.
 868     # Note however, that newlib will only be configured in this situation
 869     # if the --with-newlib option has been given, because otherwise
 870     # 'target-newlib' will appear in skipdirs.
 871     ;;
 872   i[[3456789]]86-*-rdos*)
 873     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 874     ;;
 875   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 876     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 877     ;;
 878   sparc-*-sunos4*)
 879     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 880     ;;
 881   *-*-aix*)
 882     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 883     ;;
 884   *-*-beos*)
 885     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 886     ;;
 887   *-*-chorusos)
 888     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 889     ;;
 890   *-*-dragonfly*)
 891     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 892     ;;
 893   *-*-freebsd*)
 894     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 895     ;;
 896   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 897     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 898     ;;
 899   *-*-lynxos*)
 900     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 901     ;;
 902   *-*-mingw*)
 903     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 904     ;;
 905   *-*-netbsd*)
 906     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 907     ;;
 908   *-*-netware*)
 909     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 910     ;;
 911   *-*-tpf*)
 912     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 913     ;;
 914   *-*-uclinux*)
 915     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 916     ;;
 917   *-*-vxworks*)
 918     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 919     ;;
 920 esac
 921
 922 case "${target}" in
 923   *-*-chorusos)
 924     ;;
 925   aarch64-*-darwin*)
 926     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 927     noconfigdirs="$noconfigdirs sim target-rda"
 928     ;;
 929   arm-*-darwin*)
 930     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 931     noconfigdirs="$noconfigdirs sim target-rda"
 932     ;;
 933   powerpc-*-darwin*)
 934     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 935     noconfigdirs="$noconfigdirs sim target-rda"
 936     ;;
 937   i[[3456789]]86-*-darwin*)
 938     noconfigdirs="$noconfigdirs ld gprof"
 939     noconfigdirs="$noconfigdirs sim target-rda"
 940     ;;
 941   x86_64-*-darwin[[912]]*)
 942     noconfigdirs="$noconfigdirs ld gas gprof"
 943     noconfigdirs="$noconfigdirs sim target-rda"
 944     ;;
 945   *-*-darwin*)
 946     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 947     noconfigdirs="$noconfigdirs sim target-rda"
 948     ;;
 949   *-*-dragonfly*)
 950     ;;
 951   *-*-freebsd*)
 952     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 953         && test -f /usr/local/include/gmp.h; then
 954       with_gmp=/usr/local
 955     fi
 956     ;;
 957   *-*-kaos*)
 958     # Remove unsupported stuff on all kaOS configurations.
 959     noconfigdirs="$noconfigdirs target-libgloss"
 960     ;;
 961   *-*-netbsd*)
 962     ;;
 963   *-*-netware*)
 964     ;;
 965   *-*-phoenix*)
 966     noconfigdirs="$noconfigdirs target-libgloss"
 967     ;;
 968   *-*-rtems*)
 969     noconfigdirs="$noconfigdirs target-libgloss"
 970     # this is not caught below because this stanza matches earlier
 971     case $target in
 972       or1k*-*-*) noconfigdirs="$noconfigdirs gdb" ;;
 973     esac
 974     ;;
 975     # The tpf target doesn't support gdb yet.
 976   *-*-tpf*)
 977     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
 978     ;;
 979   *-*-uclinux*)
 980     noconfigdirs="$noconfigdirs target-rda"
 981     ;;
 982   *-*-vxworks*)
 983     ;;
 984   alpha*-dec-osf*)
 985     # ld works, but does not support shared libraries.
 986     # gas doesn't generate exception information.
 987     noconfigdirs="$noconfigdirs gas ld"
 988     ;;
 989   alpha*-*-*vms*)
 990     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
 991     ;;
 992   alpha*-*-*)
 993     # newlib is not 64 bit ready
 994     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 995     ;;
 996   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 997     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
 998     ;;
 999   arc*-*-*)
1000     noconfigdirs="$noconfigdirs sim"
1001     ;;
1002   arm-*-pe*)
1003     noconfigdirs="$noconfigdirs target-libgloss"
1004     ;;
1005   arm-*-riscix*)
1006     noconfigdirs="$noconfigdirs ld target-libgloss"
1007     ;;
1008   avr-*-*)
1009     if test x${with_avrlibc} != xno; then
1010       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1011     fi
1012     ;;
1013   c4x-*-* | tic4x-*-*)
1014     noconfigdirs="$noconfigdirs target-libgloss"
1015     ;;
1016   tic54x-*-*)
1017     noconfigdirs="$noconfigdirs target-libgloss gdb"
1018     ;;
1019   d10v-*-*)
1020     noconfigdirs="$noconfigdirs target-libgloss"
1021     ;;
1022   d30v-*-*)
1023     noconfigdirs="$noconfigdirs gdb"
1024     ;;
1025   fr30-*-elf*)
1026     noconfigdirs="$noconfigdirs gdb"
1027     ;;
1028   ft32-*-*)
1029     noconfigdirs="$noconfigdirs target-rda gprof"
1030     ;;
1031   moxie-*-*)
1032     noconfigdirs="$noconfigdirs"
1033     ;;
1034   h8300*-*-*)
1035     noconfigdirs="$noconfigdirs target-libgloss"
1036     ;;
1037   h8500-*-*)
1038     noconfigdirs="$noconfigdirs target-libgloss"
1039     ;;
1040   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1041     ;;
1042   hppa*64*-*-hpux*)
1043     noconfigdirs="$noconfigdirs gdb"
1044     ;;
1045   hppa*-*-hpux11*)
1046     noconfigdirs="$noconfigdirs gdb ld"
1047     ;;
1048   hppa*64*-*-linux*)
1049     ;;
1050   hppa*-*-linux*)
1051     ;;
1052   hppa*-*-*elf* | \
1053   hppa*-*-lites* | \
1054   hppa*-*-openbsd* | \
1055   hppa*64*-*-*)
1056     ;;
1057   hppa*-*-pro*)
1058     ;;
1059   hppa*-*-*)
1060     noconfigdirs="$noconfigdirs ld"
1061     ;;
1062   i960-*-*)
1063     noconfigdirs="$noconfigdirs gdb"
1064     ;;
1065   ia64*-*-elf*)
1066     # No gdb support yet.
1067     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1068     ;;
1069   ia64*-**-hpux*)
1070     # No ld support yet.
1071     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1072     ;;
1073   ia64*-*-*vms*)
1074     # No ld support yet.
1075     noconfigdirs="$noconfigdirs libgui itcl ld"
1076     ;;
1077   i[[3456789]]86-w64-mingw*)
1078     ;;
1079   i[[3456789]]86-*-mingw*)
1080     target_configdirs="$target_configdirs target-winsup"
1081     ;;
1082   *-*-cygwin*)
1083     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1084     noconfigdirs="$noconfigdirs target-libgloss"
1085     # always build newlib if winsup directory is present.
1086     if test -d "$srcdir/winsup/cygwin"; then
1087       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1088     elif test -d "$srcdir/newlib"; then
1089       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1090     fi
1091     ;;
1092   i[[3456789]]86-*-pe)
1093     noconfigdirs="$noconfigdirs target-libgloss"
1094     ;;
1095   i[[3456789]]86-*-sco3.2v5*)
1096     # The linker does not yet know about weak symbols in COFF,
1097     # and is not configured to handle mixed ELF and COFF.
1098     noconfigdirs="$noconfigdirs ld target-libgloss"
1099     ;;
1100   i[[3456789]]86-*-sco*)
1101     noconfigdirs="$noconfigdirs gprof target-libgloss"
1102     ;;
1103   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1104     noconfigdirs="$noconfigdirs target-libgloss"
1105     ;;
1106   i[[3456789]]86-*-sysv4*)
1107     noconfigdirs="$noconfigdirs target-libgloss"
1108     ;;
1109   i[[3456789]]86-*-beos*)
1110     noconfigdirs="$noconfigdirs gdb"
1111     ;;
1112   i[[3456789]]86-*-rdos*)
1113     noconfigdirs="$noconfigdirs gdb"
1114     ;;
1115   mmix-*-*)
1116     noconfigdirs="$noconfigdirs gdb"
1117     ;;
1118   mt-*-*)
1119     noconfigdirs="$noconfigdirs sim"
1120     ;;
1121   powerpc-*-aix*)
1122     # copied from rs6000-*-* entry
1123     noconfigdirs="$noconfigdirs gprof"
1124     ;;
1125   powerpc*-*-winnt* | powerpc*-*-pe*)
1126     target_configdirs="$target_configdirs target-winsup"
1127     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1128     # always build newlib.
1129     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1130     ;;
1131     # This is temporary until we can link against shared libraries
1132   powerpcle-*-solaris*)
1133     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1134     ;;
1135   powerpc-*-beos*)
1136     noconfigdirs="$noconfigdirs gdb"
1137     ;;
1138   rs6000-*-lynxos*)
1139     noconfigdirs="$noconfigdirs gprof"
1140     ;;
1141   rs6000-*-aix*)
1142     noconfigdirs="$noconfigdirs gprof"
1143     ;;
1144   rs6000-*-*)
1145     noconfigdirs="$noconfigdirs gprof"
1146     ;;
1147   m68k-apollo-*)
1148     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1149     ;;
1150   microblaze*)
1151     noconfigdirs="$noconfigdirs gprof"
1152     ;;
1153   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1154     if test x$with_newlib = xyes; then
1155       noconfigdirs="$noconfigdirs gprof"
1156     fi
1157     ;;
1158   mips*-*-irix5*)
1159     noconfigdirs="$noconfigdirs gprof target-libgloss"
1160     ;;
1161   mips*-*-irix6*)
1162     noconfigdirs="$noconfigdirs gprof target-libgloss"
1163     ;;
1164   mips*-*-bsd*)
1165     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1166     ;;
1167   mips*-*-linux*)
1168     ;;
1169   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1170   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1171     noconfigdirs="$noconfigdirs ld gas gprof"
1172     ;;
1173   mips*-*-*)
1174     noconfigdirs="$noconfigdirs gprof"
1175     ;;
1176   nvptx*-*-*)
1177     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1178     ;;
1179   or1k*-*-*)
1180     noconfigdirs="$noconfigdirs gdb"
1181     ;;
1182   sh-*-*)
1183     case "${target}" in
1184       sh*-*-elf)
1185          ;;
1186       *)
1187          noconfigdirs="$noconfigdirs target-libgloss" ;;
1188     esac
1189     ;;
1190   sparc-*-sunos4*)
1191     if test x${is_cross_compiler} = xno ; then
1192            use_gnu_ld=no
1193     fi
1194     ;;
1195   tic6x-*-*)
1196     noconfigdirs="$noconfigdirs sim"
1197     ;;
1198   tilepro*-*-* | tilegx*-*-*)
1199     noconfigdirs="$noconfigdirs sim"
1200     ;;
1201   v810-*-*)
1202     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1203     ;;
1204   vax-*-*)
1205     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1206     ;;
1207 esac
1208
1209 # If we aren't building newlib, then don't build libgloss, since libgloss
1210 # depends upon some newlib header files.
1211 case "${noconfigdirs}" in
1212   *target-libgloss*) ;;
1213   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1214 esac
1215
1216 # Work in distributions that contain no compiler tools, like Autoconf.
1217 host_makefile_frag=/dev/null
1218 if test -d ${srcdir}/config ; then
1219 case "${host}" in
1220   i[[3456789]]86-*-msdosdjgpp*)
1221     host_makefile_frag="config/mh-djgpp"
1222     ;;
1223   *-cygwin*)
1224     ACX_CHECK_CYGWIN_CAT_WORKS
1225     host_makefile_frag="config/mh-cygwin"
1226     ;;
1227   *-mingw*)
1228     host_makefile_frag="config/mh-mingw"
1229     ;;
1230   alpha*-linux*)
1231     host_makefile_frag="config/mh-alpha-linux"
1232     ;;
1233   hppa*-hp-hpux10*)
1234     host_makefile_frag="config/mh-pa-hpux10"
1235     ;;
1236   hppa*-hp-hpux*)
1237     host_makefile_frag="config/mh-pa"
1238     ;;
1239   hppa*-*)
1240     host_makefile_frag="config/mh-pa"
1241     ;;
1242   *-*-darwin*)
1243     host_makefile_frag="config/mh-darwin"
1244     ;;
1245   powerpc-*-aix*)
1246     host_makefile_frag="config/mh-ppc-aix"
1247     ;;
1248   rs6000-*-aix*)
1249     host_makefile_frag="config/mh-ppc-aix"
1250     ;;
1251 esac
1252 fi
1253
1254 if test "${build}" != "${host}" ; then
1255   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1256   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1257   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1258   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1259   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1260   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1261   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1262   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1263   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1264   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1265   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1266   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1267 else
1268   AR_FOR_BUILD="\$(AR)"
1269   AS_FOR_BUILD="\$(AS)"
1270   CC_FOR_BUILD="\$(CC)"
1271   CXX_FOR_BUILD="\$(CXX)"
1272   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1273   GOC_FOR_BUILD="\$(GOC)"
1274   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1275   LD_FOR_BUILD="\$(LD)"
1276   NM_FOR_BUILD="\$(NM)"
1277   RANLIB_FOR_BUILD="\$(RANLIB)"
1278   WINDRES_FOR_BUILD="\$(WINDRES)"
1279   WINDMC_FOR_BUILD="\$(WINDMC)"
1280 fi
1281
1282 AC_PROG_CC
1283 AC_PROG_CXX
1284
1285 # We must set the default linker to the linker used by gcc for the correct
1286 # operation of libtool.  If LD is not defined and we are using gcc, try to
1287 # set the LD default to the ld used by gcc.
1288 if test -z "$LD"; then
1289   if test "$GCC" = yes; then
1290     case $build in
1291     *-*-mingw*)
1292       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1293     *)
1294       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1295     esac
1296     case $gcc_prog_ld in
1297     # Accept absolute paths.
1298     [[\\/]* | [A-Za-z]:[\\/]*)]
1299       LD="$gcc_prog_ld" ;;
1300     esac
1301   fi
1302 fi
1303
1304 # Check whether -static-libstdc++ -static-libgcc is supported.
1305 have_static_libs=no
1306 if test "$GCC" = yes; then
1307   saved_LDFLAGS="$LDFLAGS"
1308
1309   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1310   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1311   AC_LANG_PUSH(C++)
1312   AC_LINK_IFELSE([
1313 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1314 #error -static-libstdc++ not implemented
1315 #endif
1316 int main() {}],
1317     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1318     [AC_MSG_RESULT([no])])
1319   AC_LANG_POP(C++)
1320
1321   LDFLAGS="$saved_LDFLAGS"
1322 fi
1323
1324 ACX_PROG_GNAT
1325 ACX_PROG_CMP_IGNORE_INITIAL
1326
1327 AC_ARG_ENABLE([bootstrap],
1328 [AS_HELP_STRING([--enable-bootstrap],
1329                 [enable bootstrapping @<:@yes if native build@:>@])],,
1330 enable_bootstrap=default)
1331
1332 # Issue errors and warnings for invalid/strange bootstrap combinations.
1333 if test -r $srcdir/gcc/configure; then
1334   have_compiler=yes
1335 else
1336   have_compiler=no
1337 fi
1338
1339 case "$have_compiler:$host:$target:$enable_bootstrap" in
1340   *:*:*:no) ;;
1341
1342   # Default behavior.  Enable bootstrap if we have a compiler
1343   # and we are in a native configuration.
1344   yes:$build:$build:default)
1345     enable_bootstrap=yes ;;
1346
1347   *:*:*:default)
1348     enable_bootstrap=no ;;
1349
1350   # We have a compiler and we are in a native configuration, bootstrap is ok
1351   yes:$build:$build:yes)
1352     ;;
1353
1354   # Other configurations, but we have a compiler.  Assume the user knows
1355   # what he's doing.
1356   yes:*:*:yes)
1357     AC_MSG_WARN([trying to bootstrap a cross compiler])
1358     ;;
1359
1360   # No compiler: if they passed --enable-bootstrap explicitly, fail
1361   no:*:*:yes)
1362     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1363
1364   # Fail if wrong command line
1365   *)
1366     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1367     ;;
1368 esac
1369
1370 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1371 # C++98 compiler can still start the bootstrap.
1372 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1373   CXX="$CXX -std=gnu++98"
1374 fi
1375
1376 # Used for setting $lt_cv_objdir
1377 _LT_CHECK_OBJDIR
1378
1379 # Check for GMP, MPFR and MPC
1380 gmplibs="-lmpc -lmpfr -lgmp"
1381 gmpinc=
1382 have_gmp=no
1383
1384 # Specify a location for mpc
1385 # check for this first so it ends up on the link line before mpfr.
1386 AC_ARG_WITH(mpc,
1387 [AS_HELP_STRING([--with-mpc=PATH],
1388                 [specify prefix directory for installed MPC package.
1389                  Equivalent to --with-mpc-include=PATH/include
1390                  plus --with-mpc-lib=PATH/lib])])
1391 AC_ARG_WITH(mpc-include,
1392 [AS_HELP_STRING([--with-mpc-include=PATH],
1393                 [specify directory for installed MPC include files])])
1394 AC_ARG_WITH(mpc-lib,
1395 [AS_HELP_STRING([--with-mpc-lib=PATH],
1396                 [specify directory for the installed MPC library])])
1397
1398 if test "x$with_mpc" != x; then
1399   gmplibs="-L$with_mpc/lib $gmplibs"
1400   gmpinc="-I$with_mpc/include $gmpinc"
1401 fi
1402 if test "x$with_mpc_include" != x; then
1403   gmpinc="-I$with_mpc_include $gmpinc"
1404 fi
1405 if test "x$with_mpc_lib" != x; then
1406   gmplibs="-L$with_mpc_lib $gmplibs"
1407 fi
1408 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1409   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1410   gmpinc='-I$$s/mpc/src '"$gmpinc"
1411   # Do not test the mpc version.  Assume that it is sufficient, since
1412   # it is in the source tree, and the library has not been built yet
1413   # but it would be included on the link line in the version check below
1414   # hence making the test fail.
1415   have_gmp=yes
1416 fi
1417
1418 # Specify a location for mpfr
1419 # check for this first so it ends up on the link line before gmp.
1420 AC_ARG_WITH(mpfr-dir,
1421 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1422 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1423 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1424
1425 AC_ARG_WITH(mpfr,
1426 [AS_HELP_STRING([--with-mpfr=PATH],
1427                 [specify prefix directory for installed MPFR package.
1428                  Equivalent to --with-mpfr-include=PATH/include
1429                  plus --with-mpfr-lib=PATH/lib])])
1430 AC_ARG_WITH(mpfr-include,
1431 [AS_HELP_STRING([--with-mpfr-include=PATH],
1432                 [specify directory for installed MPFR include files])])
1433 AC_ARG_WITH(mpfr-lib,
1434 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1435                 [specify directory for the installed MPFR library])])
1436
1437 if test "x$with_mpfr" != x; then
1438   gmplibs="-L$with_mpfr/lib $gmplibs"
1439   gmpinc="-I$with_mpfr/include $gmpinc"
1440 fi
1441 if test "x$with_mpfr_include" != x; then
1442   gmpinc="-I$with_mpfr_include $gmpinc"
1443 fi
1444 if test "x$with_mpfr_lib" != x; then
1445   gmplibs="-L$with_mpfr_lib $gmplibs"
1446 fi
1447 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1448   # MPFR v3.1.0 moved the sources into a src sub-directory.
1449   if ! test -d ${srcdir}/mpfr/src; then
1450     AC_MSG_ERROR([dnl
1451 Building GCC with MPFR in the source tree is only handled for MPFR 3.1.0+.])
1452   fi
1453   gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1454   gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1455   extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1456   # Do not test the mpfr version.  Assume that it is sufficient, since
1457   # it is in the source tree, and the library has not been built yet
1458   # but it would be included on the link line in the version check below
1459   # hence making the test fail.
1460   have_gmp=yes
1461 fi
1462
1463 # Specify a location for gmp
1464 AC_ARG_WITH(gmp-dir,
1465 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1466 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1467 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1468
1469 AC_ARG_WITH(gmp,
1470 [AS_HELP_STRING([--with-gmp=PATH],
1471                 [specify prefix directory for the installed GMP package.
1472                  Equivalent to --with-gmp-include=PATH/include
1473                  plus --with-gmp-lib=PATH/lib])])
1474 AC_ARG_WITH(gmp-include,
1475 [AS_HELP_STRING([--with-gmp-include=PATH],
1476                 [specify directory for installed GMP include files])])
1477 AC_ARG_WITH(gmp-lib,
1478 [AS_HELP_STRING([--with-gmp-lib=PATH],
1479                 [specify directory for the installed GMP library])])
1480
1481
1482 if test "x$with_gmp" != x; then
1483   gmplibs="-L$with_gmp/lib $gmplibs"
1484   gmpinc="-I$with_gmp/include $gmpinc"
1485 fi
1486 if test "x$with_gmp_include" != x; then
1487   gmpinc="-I$with_gmp_include $gmpinc"
1488 fi
1489 if test "x$with_gmp_lib" != x; then
1490   gmplibs="-L$with_gmp_lib $gmplibs"
1491 fi
1492 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1493   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1494   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1495   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1496   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1497   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1498   # Do not test the gmp version.  Assume that it is sufficient, since
1499   # it is in the source tree, and the library has not been built yet
1500   # but it would be included on the link line in the version check below
1501   # hence making the test fail.
1502   have_gmp=yes
1503 fi
1504
1505 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1506   have_gmp=yes
1507   saved_CFLAGS="$CFLAGS"
1508   CFLAGS="$CFLAGS $gmpinc"
1509   # Check for the recommended and required versions of GMP.
1510   AC_MSG_CHECKING([for the correct version of gmp.h])
1511   AC_TRY_COMPILE([#include "gmp.h"],[
1512   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1513   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1514   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1515   choke me
1516   #endif
1517   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1518   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1519   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1520   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1521   choke me
1522   #endif
1523   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1524    [AC_MSG_RESULT([no]); have_gmp=no])
1525
1526   # If we have GMP, check the MPFR version.
1527   if test x"$have_gmp" = xyes; then
1528     # Check for the recommended and required versions of MPFR.
1529     AC_MSG_CHECKING([for the correct version of mpfr.h])
1530     AC_TRY_COMPILE([#include <gmp.h>
1531     #include <mpfr.h>],[
1532     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1533     choke me
1534     #endif
1535     ], [AC_TRY_COMPILE([#include <gmp.h>
1536     #include <mpfr.h>],[
1537     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1538     choke me
1539     #endif
1540     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1541      [AC_MSG_RESULT([no]); have_gmp=no])
1542   fi
1543
1544   # Check for the MPC header version.
1545   if test x"$have_gmp" = xyes ; then
1546     # Check for the recommended and required versions of MPC.
1547     AC_MSG_CHECKING([for the correct version of mpc.h])
1548     AC_TRY_COMPILE([#include <mpc.h>],[
1549     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1550     choke me
1551     #endif
1552     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1553     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1554     choke me
1555     #endif
1556     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1557      [AC_MSG_RESULT([no]); have_gmp=no])
1558   fi
1559
1560   # Now check the MPFR library.
1561   if test x"$have_gmp" = xyes; then
1562     saved_LIBS="$LIBS"
1563     LIBS="$LIBS $gmplibs"
1564     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1565     AC_TRY_LINK([#include <mpc.h>],[
1566     mpfr_t n;
1567     mpfr_t x;
1568     mpc_t c;
1569     int t;
1570     mpfr_init (n);
1571     mpfr_init (x);
1572     mpfr_atan2 (n, n, x, GMP_RNDN);
1573     mpfr_erfc (n, x, GMP_RNDN);
1574     mpfr_subnormalize (x, t, GMP_RNDN);
1575     mpfr_clear(n);
1576     mpfr_clear(x);
1577     mpc_init2 (c, 53);
1578     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1579     mpc_cosh (c, c, MPC_RNDNN);
1580     mpc_pow (c, c, c, MPC_RNDNN);
1581     mpc_acosh (c, c, MPC_RNDNN);
1582     mpc_clear (c);
1583     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1584     LIBS="$saved_LIBS"
1585   fi
1586
1587   CFLAGS="$saved_CFLAGS"
1588
1589 # The library versions listed in the error message below should match
1590 # the HARD-minimums enforced above.
1591   if test x$have_gmp != xyes; then
1592     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1593 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1594 their locations.  Source code for these libraries can be found at
1595 their respective hosting sites as well as at
1596 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1597 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1598 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1599 make sure that you have installed both the libraries and the header
1600 files.  They may be located in separate packages.])
1601   fi
1602 fi
1603
1604 # Flags needed for both GMP, MPFR and/or MPC.
1605 AC_SUBST(gmplibs)
1606 AC_SUBST(gmpinc)
1607 AC_SUBST(extra_mpfr_configure_flags)
1608 AC_SUBST(extra_mpc_gmp_configure_flags)
1609 AC_SUBST(extra_mpc_mpfr_configure_flags)
1610 AC_SUBST(extra_isl_gmp_configure_flags)
1611
1612 # Libraries to use for stage1 or when not bootstrapping.
1613 AC_ARG_WITH(stage1-libs,
1614 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1615 [if test "$withval" = "no" -o "$withval" = "yes"; then
1616    stage1_libs=
1617  else
1618    stage1_libs=$withval
1619  fi],
1620 [stage1_libs=])
1621 AC_SUBST(stage1_libs)
1622
1623 # Linker flags to use for stage1 or when not bootstrapping.
1624 AC_ARG_WITH(stage1-ldflags,
1625 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1626 [if test "$withval" = "no" -o "$withval" = "yes"; then
1627    stage1_ldflags=
1628  else
1629    stage1_ldflags=$withval
1630  fi],
1631 [stage1_ldflags=
1632  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1633  # if supported.  But if the user explicitly specified the libraries to use,
1634  # trust that they are doing what they want.
1635  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1636    stage1_ldflags="-static-libstdc++ -static-libgcc"
1637  fi])
1638 AC_SUBST(stage1_ldflags)
1639
1640 # Libraries to use for stage2 and later builds.
1641 AC_ARG_WITH(boot-libs,
1642 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1643 [if test "$withval" = "no" -o "$withval" = "yes"; then
1644    poststage1_libs=
1645  else
1646    poststage1_libs=$withval
1647  fi],
1648 [poststage1_libs=])
1649 AC_SUBST(poststage1_libs)
1650
1651 # Linker flags to use for stage2 and later builds.
1652 AC_ARG_WITH(boot-ldflags,
1653 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1654                 [linker flags for stage2 and later])],
1655 [if test "$withval" = "no" -o "$withval" = "yes"; then
1656    poststage1_ldflags=
1657  else
1658    poststage1_ldflags=$withval
1659  fi],
1660 [poststage1_ldflags=
1661  # In stages 2 and 3, default to linking libstdc++ and libgcc
1662  # statically.  But if the user explicitly specified the libraries to
1663  # use, trust that they are doing what they want.
1664  if test "$poststage1_libs" = ""; then
1665    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1666  fi])
1667 AC_SUBST(poststage1_ldflags)
1668
1669 # GCC GRAPHITE dependency isl.
1670 # Basic setup is inlined here, actual checks are in config/isl.m4
1671
1672 AC_ARG_WITH(isl,
1673   [AS_HELP_STRING(
1674    [--with-isl=PATH],
1675    [Specify prefix directory for the installed isl package.
1676     Equivalent to --with-isl-include=PATH/include
1677     plus --with-isl-lib=PATH/lib])])
1678
1679 # Treat --without-isl as a request to disable
1680 # GRAPHITE support and skip all following checks.
1681 if test "x$with_isl" != "xno"; then
1682   # Check for isl
1683   dnl Provide configure switches and initialize islinc & isllibs
1684   dnl with user input.
1685   ISL_INIT_FLAGS
1686   dnl The versions of isl that work for Graphite
1687   ISL_CHECK_VERSION()
1688   dnl Only execute fail-action, if isl has been requested.
1689   ISL_IF_FAILED([
1690     AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1691 fi
1692
1693 # If the isl check failed, disable builds of in-tree variant of isl
1694 if test "x$with_isl" = xno ||
1695    test "x$gcc_cv_isl" = xno; then
1696   noconfigdirs="$noconfigdirs isl"
1697   islinc=
1698 fi
1699
1700 AC_SUBST(isllibs)
1701 AC_SUBST(islinc)
1702
1703 # Check for LTO support.
1704 AC_ARG_ENABLE(lto,
1705 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1706 enable_lto=$enableval,
1707 enable_lto=yes; default_enable_lto=yes)
1708
1709 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1710   build_lto_plugin=yes
1711 ],[if test x"$default_enable_lto" = x"yes" ; then
1712     case $target in
1713       *-apple-darwin9* | *-cygwin* | *-mingw* | *djgpp*) ;;
1714       # On other non-ELF platforms, LTO has yet to be validated.
1715       *) enable_lto=no ;;
1716     esac
1717   else
1718   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1719   # It would also be nice to check the binutils support, but we don't
1720   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1721   # warn during gcc/ subconfigure; unless you're bootstrapping with
1722   # -flto it won't be needed until after installation anyway.
1723     case $target in
1724       *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1725       *) if test x"$enable_lto" = x"yes"; then
1726         AC_MSG_ERROR([LTO support is not enabled for this target.])
1727         fi
1728       ;;
1729     esac
1730   fi
1731   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1732   # Build it unless LTO was explicitly disabled.
1733   case $target in
1734     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1735     *) ;;
1736   esac
1737 ])
1738
1739 AC_ARG_ENABLE(linker-plugin-configure-flags,
1740   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1741     [additional flags for configuring linker plugins @<:@none@:>@])],
1742   extra_linker_plugin_configure_flags=$enableval,
1743   extra_linker_plugin_configure_flags=)
1744 AC_SUBST(extra_linker_plugin_configure_flags)
1745 AC_ARG_ENABLE(linker-plugin-flags,
1746   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1747     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1748   extra_linker_plugin_flags=$enableval,
1749   extra_linker_plugin_flags=)
1750 AC_SUBST(extra_linker_plugin_flags)
1751
1752
1753 # By default, C and C++ are the only stage 1 languages.
1754 stage1_languages=,c,
1755
1756 # Target libraries that we bootstrap.
1757 bootstrap_target_libs=,target-libgcc,
1758
1759 # Figure out what language subdirectories are present.
1760 # Look if the user specified --enable-languages="..."; if not, use
1761 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1762 # go away some day.
1763 # NB:  embedded tabs in this IF block -- do not untabify
1764 if test -d ${srcdir}/gcc; then
1765   if test x"${enable_languages+set}" != xset; then
1766     if test x"${LANGUAGES+set}" = xset; then
1767       enable_languages="${LANGUAGES}"
1768         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1769     else
1770       enable_languages=all
1771     fi
1772   else
1773     if test x"${enable_languages}" = x ||
1774        test x"${enable_languages}" = xyes;
1775        then
1776       echo configure.ac: --enable-languages needs at least one language argument 1>&2
1777       exit 1
1778     fi
1779   fi
1780   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1781
1782   # 'f95' is the old name for the 'fortran' language. We issue a warning
1783   # and make the substitution.
1784   case ,${enable_languages}, in
1785     *,f95,*)
1786       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1787       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1788       ;;
1789   esac
1790
1791   # If bootstrapping, C++ must be enabled.
1792   case ",$enable_languages,:$enable_bootstrap" in
1793     *,c++,*:*) ;;
1794     *:yes)
1795       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1796         enable_languages="${enable_languages},c++"
1797       else
1798         AC_MSG_ERROR([bootstrapping requires c++ sources])
1799       fi
1800       ;;
1801   esac
1802
1803   # First scan to see if an enabled language requires some other language.
1804   # We assume that a given config-lang.in will list all the language
1805   # front ends it requires, even if some are required indirectly.
1806   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1807     case ${lang_frag} in
1808       ..) ;;
1809       # The odd quoting in the next line works around
1810       # an apparent bug in bash 1.12 on linux.
1811       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1812       *)
1813         # From the config-lang.in, get $language, $lang_requires, and
1814         # $lang_requires_boot_languages.
1815         language=
1816         lang_requires=
1817         lang_requires_boot_languages=
1818         . ${lang_frag}
1819         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1820           case ,${enable_languages}, in
1821             *,$other,*) ;;
1822             *,all,*) ;;
1823             *,$language,*)
1824               echo " \`$other' language required by \`$language'; enabling" 1>&2
1825               enable_languages="${enable_languages},${other}"
1826               ;;
1827           esac
1828         done
1829         for other in ${lang_requires_boot_languages} ; do
1830           if test "$other" != "c"; then
1831             case ,${enable_stage1_languages}, in
1832               *,$other,*) ;;
1833               *,all,*) ;;
1834               *)
1835                 case ,${enable_languages}, in
1836                   *,$language,*)
1837                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1838                     enable_stage1_languages="$enable_stage1_languages,${other}"
1839                     ;;
1840                 esac
1841                 ;;
1842             esac
1843           fi
1844         done
1845         ;;
1846     esac
1847   done
1848
1849   new_enable_languages=,c,
1850
1851   # If LTO is enabled, add the LTO front end.
1852   if test "$enable_lto" = "yes" ; then
1853     case ,${enable_languages}, in
1854       *,lto,*) ;;
1855       *) enable_languages="${enable_languages},lto" ;;
1856     esac
1857     if test "${build_lto_plugin}" = "yes" ; then
1858       configdirs="$configdirs lto-plugin"
1859     fi
1860   fi
1861
1862   # If we're building an offloading compiler, add the LTO front end.
1863   if test x"$enable_as_accelerator_for" != x ; then
1864     case ,${enable_languages}, in
1865       *,lto,*) ;;
1866       *) enable_languages="${enable_languages},lto" ;;
1867     esac
1868   fi
1869
1870   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1871   potential_languages=,c,
1872
1873   enabled_target_libs=
1874   disabled_target_libs=
1875
1876   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1877     case ${lang_frag} in
1878       ..) ;;
1879       # The odd quoting in the next line works around
1880       # an apparent bug in bash 1.12 on linux.
1881       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1882       *)
1883         # From the config-lang.in, get $language, $target_libs,
1884         # $lang_dirs, $boot_language, and $build_by_default
1885         language=
1886         target_libs=
1887         lang_dirs=
1888         subdir_requires=
1889         boot_language=no
1890         build_by_default=yes
1891         . ${lang_frag}
1892         if test x${language} = x; then
1893           echo "${lang_frag} doesn't set \$language." 1>&2
1894           exit 1
1895         fi
1896
1897         if test "$language" = "c++"; then
1898           boot_language=yes
1899         fi
1900
1901         add_this_lang=no
1902         case ,${enable_languages}, in
1903           *,${language},*)
1904             # Language was explicitly selected; include it
1905             # unless it is C, which is enabled by default.
1906             if test "$language" != "c"; then
1907               add_this_lang=yes
1908             fi
1909             ;;
1910           *,all,*)
1911             # 'all' was selected, select it if it is a default language
1912             if test "$language" != "c"; then
1913               add_this_lang=${build_by_default}
1914             fi
1915             ;;
1916         esac
1917
1918         # Disable languages that need other directories if these aren't available.
1919         for i in $subdir_requires; do
1920           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1921           case ,${enable_languages}, in
1922             *,${language},*)
1923               # Specifically requested language; tell them.
1924               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1925               ;;
1926             *)
1927               # Silently disable.
1928               add_this_lang=unsupported
1929               ;;
1930           esac
1931         done
1932
1933         # Disable Ada if no preexisting GNAT is available.
1934         case ,${enable_languages},:${language}:${have_gnat} in
1935           *,${language},*:ada:no)
1936             # Specifically requested language; tell them.
1937             AC_MSG_ERROR([GNAT is required to build $language])
1938             ;;
1939           *:ada:no)
1940             # Silently disable.
1941             add_this_lang=unsupported
1942             ;;
1943         esac
1944
1945         # Disable a language that is unsupported by the target.
1946         case " $unsupported_languages " in
1947           *" $language "*)
1948             add_this_lang=unsupported
1949             ;;
1950         esac
1951
1952         case $add_this_lang in
1953           unsupported)
1954             # Remove language-dependent dirs.
1955             disabled_target_libs="$disabled_target_libs $target_libs"
1956             noconfigdirs="$noconfigdirs $lang_dirs"
1957             ;;
1958           no)
1959             # Remove language-dependent dirs; still show language as supported.
1960             disabled_target_libs="$disabled_target_libs $target_libs"
1961             noconfigdirs="$noconfigdirs $lang_dirs"
1962             potential_languages="${potential_languages}${language},"
1963             ;;
1964           yes)
1965             new_enable_languages="${new_enable_languages}${language},"
1966             potential_languages="${potential_languages}${language},"
1967             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
1968             enabled_target_libs="$enabled_target_libs $target_libs"
1969             case "${boot_language}:,$enable_stage1_languages," in
1970               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
1971                 # Add to (comma-separated) list of stage 1 languages.
1972                 case ",$stage1_languages," in
1973                   *,$language,* | ,yes, | ,all,) ;;
1974                   *) stage1_languages="${stage1_languages}${language}," ;;
1975                 esac
1976                 # We need to bootstrap any supporting libraries.
1977                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
1978                 ;;
1979             esac
1980             ;;
1981         esac
1982         ;;
1983     esac
1984   done
1985
1986   # Add target libraries which are only needed for disabled languages
1987   # to noconfigdirs.
1988   if test -n "$disabled_target_libs"; then
1989     for dir in $disabled_target_libs; do
1990       case " $enabled_target_libs " in
1991       *" ${dir} "*) ;;
1992       *) noconfigdirs="$noconfigdirs $dir" ;;
1993       esac
1994     done
1995   fi
1996
1997   AC_ARG_ENABLE(stage1-languages,
1998   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
1999                   [choose additional languages to build during
2000                   stage1.  Mostly useful for compiler development])],
2001   [case ,${enable_stage1_languages}, in
2002     ,no,|,,)
2003       # Set it to something that will have no effect in the loop below
2004       enable_stage1_languages=c ;;
2005     ,yes,)
2006       enable_stage1_languages=`echo $new_enable_languages | \
2007         sed -e "s/^,//" -e "s/,$//" ` ;;
2008     *,all,*)
2009       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2010         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2011   esac
2012
2013   # Add "good" languages from enable_stage1_languages to stage1_languages,
2014   # while "bad" languages go in missing_languages.  Leave no duplicates.
2015   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2016     case $potential_languages in
2017       *,$i,*)
2018         case $stage1_languages in
2019           *,$i,*) ;;
2020           *) stage1_languages="$stage1_languages$i," ;;
2021         esac ;;
2022       *)
2023         case $missing_languages in
2024           *,$i,*) ;;
2025           *) missing_languages="$missing_languages$i," ;;
2026         esac ;;
2027      esac
2028   done])
2029
2030   # Remove leading/trailing commas that were added for simplicity
2031   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2032   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2033   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2034   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2035
2036   if test "x$missing_languages" != x; then
2037     AC_MSG_ERROR([
2038 The following requested languages could not be built: ${missing_languages}
2039 Supported languages are: ${potential_languages}])
2040   fi
2041   if test "x$new_enable_languages" != "x$enable_languages"; then
2042     echo The following languages will be built: ${new_enable_languages}
2043     enable_languages="$new_enable_languages"
2044   fi
2045
2046   AC_SUBST(stage1_languages)
2047   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2048 fi
2049
2050 # Handle --disable-<component> generically.
2051 for dir in $configdirs $build_configdirs $target_configdirs ; do
2052   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2053   varname=`echo $dirname | sed -e s/+/_/g`
2054   if eval test x\${enable_${varname}} "=" xno ; then
2055     noconfigdirs="$noconfigdirs $dir"
2056   fi
2057 done
2058
2059 # Check for Boehm's garbage collector
2060 AC_ARG_ENABLE(objc-gc,
2061 [AS_HELP_STRING([--enable-objc-gc],
2062                 [enable use of Boehm's garbage collector with the
2063                  GNU Objective-C runtime])])
2064 AC_ARG_WITH([target-bdw-gc],
2065 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
2066                 [specify prefix directory for installed bdw-gc package.
2067                  Equivalent to --with-target-bdw-gc-include=PATH/include
2068                  plus --with-target-bdw-gc-lib=PATH/lib])])
2069 AC_ARG_WITH([target-bdw-gc-include],
2070 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
2071                 [specify directories for installed bdw-gc include files])])
2072 AC_ARG_WITH([target-bdw-gc-lib],
2073 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
2074                 [specify directories for installed bdw-gc library])])
2075
2076 case ,${enable_languages},:${enable_objc_gc} in *,objc,*:yes|*,objc,*:auto)
2077   AC_MSG_CHECKING([for bdw garbage collector])
2078   if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
2079     dnl no bdw-gw options, fall back to the bdw-gc pkg-config module
2080     PKG_CHECK_EXISTS(bdw-gc,
2081       AC_MSG_RESULT([using bdw-gc pkg-config module]),
2082       AC_MSG_ERROR([no --with-target-bdw-gc options and no bdw-gc pkg-config module found]))
2083   else
2084     dnl bdw-gw options, first error checking, complete checking in libobjc
2085     if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
2086       AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
2087     elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
2088       AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
2089     else
2090       AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
2091     fi
2092   fi
2093 esac
2094
2095 # Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2096 case ,${enable_languages}, in
2097   *,c++,*)
2098     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2099     case "${noconfigdirs}" in
2100       *target-libstdc++-v3*)
2101         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2102         ;;
2103       *) ;;
2104     esac
2105     ;;
2106   *)
2107     noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2108     ;;
2109 esac
2110
2111 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2112 # $build_configdirs and $target_configdirs.
2113 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2114
2115 notsupp=""
2116 for dir in . $skipdirs $noconfigdirs ; do
2117   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2118   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2119     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2120     if test -r $srcdir/$dirname/configure ; then
2121       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2122         true
2123       else
2124         notsupp="$notsupp $dir"
2125       fi
2126     fi
2127   fi
2128   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2129     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2130     if test -r $srcdir/$dirname/configure ; then
2131       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2132         true
2133       else
2134         notsupp="$notsupp $dir"
2135       fi
2136     fi
2137   fi
2138   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2139     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2140     if test -r $srcdir/$dirname/configure ; then
2141       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2142         true
2143       else
2144         notsupp="$notsupp $dir"
2145       fi
2146     fi
2147   fi
2148 done
2149
2150 # Quietly strip out all directories which aren't configurable in this tree.
2151 # This relies on all configurable subdirectories being autoconfiscated, which
2152 # is now the case.
2153 build_configdirs_all="$build_configdirs"
2154 build_configdirs=
2155 for i in ${build_configdirs_all} ; do
2156   j=`echo $i | sed -e s/build-//g`
2157   if test -f ${srcdir}/$j/configure ; then
2158     build_configdirs="${build_configdirs} $i"
2159   fi
2160 done
2161
2162 configdirs_all="$configdirs"
2163 configdirs=
2164 for i in ${configdirs_all} ; do
2165   if test -f ${srcdir}/$i/configure ; then
2166     configdirs="${configdirs} $i"
2167   fi
2168 done
2169
2170 target_configdirs_all="$target_configdirs"
2171 target_configdirs=
2172 for i in ${target_configdirs_all} ; do
2173   j=`echo $i | sed -e s/target-//g`
2174   if test -f ${srcdir}/$j/configure ; then
2175     target_configdirs="${target_configdirs} $i"
2176   fi
2177 done
2178
2179 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2180 # so we have to add it after the preceding checks.
2181 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2182 then
2183   case " $configdirs " in
2184     *" libiberty "*)
2185       # If we can build libiberty, we can also build libiberty-linker-plugin.
2186       configdirs="$configdirs libiberty-linker-plugin"
2187       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2188         --with-libiberty=../libiberty-linker-plugin";;
2189     *)
2190       AC_MSG_ERROR([libiberty missing]);;
2191   esac
2192 fi
2193
2194 # Sometimes we have special requirements for the host libiberty.
2195 extra_host_libiberty_configure_flags=
2196 extra_host_zlib_configure_flags=
2197 case " $configdirs " in
2198   *" lto-plugin "* | *" libcc1 "*)
2199     # When these are to be built as shared libraries, the same applies to
2200     # libiberty.
2201     extra_host_libiberty_configure_flags=--enable-shared
2202     ;;
2203   *" bfd "*)
2204     # When bfd is to be built as a shared library, the same applies to
2205     # zlib.
2206     if test "$enable_shared" = "yes"; then
2207       extra_host_zlib_configure_flags=--enable-host-shared
2208     fi
2209     ;;
2210 esac
2211 AC_SUBST(extra_host_libiberty_configure_flags)
2212 AC_SUBST(extra_host_zlib_configure_flags)
2213
2214 # Produce a warning message for the subdirs we can't configure.
2215 # This isn't especially interesting in the Cygnus tree, but in the individual
2216 # FSF releases, it's important to let people know when their machine isn't
2217 # supported by the one or two programs in a package.
2218
2219 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2220   # If $appdirs is non-empty, at least one of those directories must still
2221   # be configured, or we error out.  (E.g., if the gas release supports a
2222   # specified target in some subdirs but not the gas subdir, we shouldn't
2223   # pretend that all is well.)
2224   if test -n "$appdirs" ; then
2225     for dir in $appdirs ; do
2226       if test -r $dir/Makefile.in ; then
2227         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2228           appdirs=""
2229           break
2230         fi
2231         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2232           appdirs=""
2233           break
2234         fi
2235       fi
2236     done
2237     if test -n "$appdirs" ; then
2238       echo "*** This configuration is not supported by this package." 1>&2
2239       exit 1
2240     fi
2241   fi
2242   # Okay, some application will build, or we don't care to check.  Still
2243   # notify of subdirs not getting built.
2244   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2245   echo "    ${notsupp}" 1>&2
2246   echo "    (Any other directories should still work fine.)" 1>&2
2247 fi
2248
2249 case "$host" in
2250   *msdosdjgpp*)
2251     enable_gdbtk=no ;;
2252 esac
2253
2254 # To find our prefix, in gcc_cv_tool_prefix.
2255 ACX_TOOL_DIRS
2256
2257 copy_dirs=
2258
2259 AC_ARG_WITH([build-sysroot],
2260   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2261                   [use sysroot as the system root during the build])],
2262   [if test x"$withval" != x ; then
2263      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2264    fi],
2265   [SYSROOT_CFLAGS_FOR_TARGET=])
2266 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2267
2268 AC_ARG_WITH([debug-prefix-map],
2269   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2270                   [map A to B, C to D ... in debug information])],
2271   [if test x"$withval" != x; then
2272      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2273      for debug_map in $withval; do
2274        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2275      done
2276    fi],
2277   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2278 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2279
2280 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2281 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2282 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2283 # We want to ensure that TARGET libraries (which we know are built with
2284 # gcc) are built with "-O2 -g", so include those options when setting
2285 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2286 if test "x$CFLAGS_FOR_TARGET" = x; then
2287   if test "x${is_cross_compiler}" = xyes; then
2288     CFLAGS_FOR_TARGET="-g -O2"
2289   else
2290     CFLAGS_FOR_TARGET=$CFLAGS
2291     case " $CFLAGS " in
2292       *" -O2 "*) ;;
2293       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2294     esac
2295     case " $CFLAGS " in
2296       *" -g "* | *" -g3 "*) ;;
2297       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2298     esac
2299   fi
2300 fi
2301 AC_SUBST(CFLAGS_FOR_TARGET)
2302
2303 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2304   if test "x${is_cross_compiler}" = xyes; then
2305     CXXFLAGS_FOR_TARGET="-g -O2"
2306   else
2307     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2308     case " $CXXFLAGS " in
2309       *" -O2 "*) ;;
2310       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2311     esac
2312     case " $CXXFLAGS " in
2313       *" -g "* | *" -g3 "*) ;;
2314       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2315     esac
2316   fi
2317 fi
2318 AC_SUBST(CXXFLAGS_FOR_TARGET)
2319
2320 AC_SUBST(LDFLAGS_FOR_TARGET)
2321
2322 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2323 # the named directory are copied to $(tooldir)/sys-include.
2324 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2325   if test x${is_cross_compiler} = xno ; then
2326     echo 1>&2 '***' --with-headers is only supported when cross compiling
2327     exit 1
2328   fi
2329   if test x"${with_headers}" != xyes ; then
2330     x=${gcc_cv_tool_prefix}
2331     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2332   fi
2333 fi
2334
2335 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2336 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2337 # are permitted.
2338 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2339   if test x${is_cross_compiler} = xno ; then
2340     echo 1>&2 '***' --with-libs is only supported when cross compiling
2341     exit 1
2342   fi
2343   if test x"${with_libs}" != xyes ; then
2344     # Copy the libraries in reverse order, so that files in the first named
2345     # library override files in subsequent libraries.
2346     x=${gcc_cv_tool_prefix}
2347     for l in ${with_libs}; do
2348       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2349     done
2350   fi
2351 fi
2352
2353 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2354 #
2355 # This is done by determining whether or not the appropriate directory
2356 # is available, and by checking whether or not specific configurations
2357 # have requested that this magic not happen.
2358 #
2359 # The command line options always override the explicit settings in
2360 # configure.ac, and the settings in configure.ac override this magic.
2361 #
2362 # If the default for a toolchain is to use GNU as and ld, and you don't
2363 # want to do that, then you should use the --without-gnu-as and
2364 # --without-gnu-ld options for the configure script.  Similarly, if
2365 # the default is to use the included zlib and you don't want to do that,
2366 # you should use the --with-system-zlib option for the configure script.
2367
2368 if test x${use_gnu_as} = x &&
2369    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2370   with_gnu_as=yes
2371   extra_host_args="$extra_host_args --with-gnu-as"
2372 fi
2373
2374 if test x${use_gnu_ld} = x &&
2375    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2376   with_gnu_ld=yes
2377   extra_host_args="$extra_host_args --with-gnu-ld"
2378 fi
2379
2380 if test x${use_included_zlib} = x &&
2381    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2382   :
2383 else
2384   with_system_zlib=yes
2385   extra_host_args="$extra_host_args --with-system-zlib"
2386 fi
2387
2388 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2389 # can detect this case.
2390
2391 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2392   with_newlib=yes
2393   extra_host_args="$extra_host_args --with-newlib"
2394 fi
2395
2396 # Handle ${copy_dirs}
2397 set fnord ${copy_dirs}
2398 shift
2399 while test $# != 0 ; do
2400   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2401     :
2402   else
2403     echo Copying $1 to $2
2404
2405     # Use the install script to create the directory and all required
2406     # parent directories.
2407     if test -d $2 ; then
2408       :
2409     else
2410       echo >config.temp
2411       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2412     fi
2413
2414     # Copy the directory, assuming we have tar.
2415     # FIXME: Should we use B in the second tar?  Not all systems support it.
2416     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2417
2418     # It is the responsibility of the user to correctly adjust all
2419     # symlinks.  If somebody can figure out how to handle them correctly
2420     # here, feel free to add the code.
2421
2422     echo $1 > $2/COPIED
2423   fi
2424   shift; shift
2425 done
2426
2427 # Determine a target-dependent exec_prefix that the installed
2428 # gcc will search in.  Keep this list sorted by triplet, with
2429 # the *-*-osname triplets last.
2430 md_exec_prefix=
2431 case "${target}" in
2432   i[[34567]]86-pc-msdosdjgpp*)
2433     md_exec_prefix=/dev/env/DJDIR/bin
2434     ;;
2435   *-*-hpux* | \
2436   *-*-nto-qnx* | \
2437   *-*-solaris2*)
2438     md_exec_prefix=/usr/ccs/bin
2439     ;;
2440 esac
2441
2442 extra_arflags_for_target=
2443 extra_nmflags_for_target=
2444 extra_ranlibflags_for_target=
2445 target_makefile_frag=/dev/null
2446 case "${target}" in
2447   spu-*-*)
2448     target_makefile_frag="config/mt-spu"
2449     ;;
2450   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2451     target_makefile_frag="config/mt-sde"
2452     ;;
2453   mipsisa*-*-elfoabi*)
2454     target_makefile_frag="config/mt-mips-elfoabi"
2455     ;;
2456   mips*-*-*linux* | mips*-*-gnu*)
2457     target_makefile_frag="config/mt-mips-gnu"
2458     ;;
2459   nios2-*-elf*)
2460     target_makefile_frag="config/mt-nios2-elf"
2461     ;;
2462   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2463     target_makefile_frag="config/mt-gnu"
2464     ;;
2465   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2466     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2467     # commands to handle both 32-bit and 64-bit objects.  These flags are
2468     # harmless if we're using GNU nm or ar.
2469     extra_arflags_for_target=" -X32_64"
2470     extra_nmflags_for_target=" -B -X32_64"
2471     ;;
2472 esac
2473
2474 alphaieee_frag=/dev/null
2475 case $target in
2476   alpha*-*-*)
2477     # This just makes sure to use the -mieee option to build target libs.
2478     # This should probably be set individually by each library.
2479     alphaieee_frag="config/mt-alphaieee"
2480     ;;
2481 esac
2482
2483 # If --enable-target-optspace always use -Os instead of -O2 to build
2484 # the target libraries, similarly if it is not specified, use -Os
2485 # on selected platforms.
2486 ospace_frag=/dev/null
2487 case "${enable_target_optspace}:${target}" in
2488   yes:*)
2489     ospace_frag="config/mt-ospace"
2490     ;;
2491   :d30v-*)
2492     ospace_frag="config/mt-d30v"
2493     ;;
2494   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2495     ospace_frag="config/mt-ospace"
2496     ;;
2497   no:* | :*)
2498     ;;
2499   *)
2500     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2501     ;;
2502 esac
2503
2504 # Some systems (e.g., one of the i386-aix systems the gas testers are
2505 # using) don't handle "\$" correctly, so don't use it here.
2506 tooldir='${exec_prefix}'/${target_noncanonical}
2507 build_tooldir=${tooldir}
2508
2509 # Create a .gdbinit file which runs the one in srcdir
2510 # and tells GDB to look there for source files.
2511
2512 if test -r ${srcdir}/.gdbinit ; then
2513   case ${srcdir} in
2514     .) ;;
2515     *) cat > ./.gdbinit <<EOF
2516 # ${NO_EDIT}
2517 dir ${srcdir}
2518 dir .
2519 source ${srcdir}/.gdbinit
2520 EOF
2521     ;;
2522   esac
2523 fi
2524
2525 # Make sure that the compiler is able to generate an executable.  If it
2526 # can't, we are probably in trouble.  We don't care whether we can run the
2527 # executable--we might be using a cross compiler--we only care whether it
2528 # can be created.  At this point the main configure script has set CC.
2529 we_are_ok=no
2530 echo "int main () { return 0; }" > conftest.c
2531 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2532 if test $? = 0 ; then
2533   if test -s conftest || test -s conftest.exe ; then
2534     we_are_ok=yes
2535   fi
2536 fi
2537 case $we_are_ok in
2538   no)
2539     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2540     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2541     rm -f conftest*
2542     exit 1
2543     ;;
2544 esac
2545 rm -f conftest*
2546
2547 # Decide which environment variable is used to find dynamic libraries.
2548 case "${host}" in
2549   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2550   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2551   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2552   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2553 esac
2554
2555 # On systems where the dynamic library environment variable is PATH,
2556 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2557 # built executables to PATH.
2558 if test "$RPATH_ENVVAR" = PATH; then
2559   GCC_SHLIB_SUBDIR=/shlib
2560 else
2561   GCC_SHLIB_SUBDIR=
2562 fi
2563
2564 # Adjust the toplevel makefile according to whether bootstrap was selected.
2565 case $enable_bootstrap in
2566   yes)
2567     bootstrap_suffix=bootstrap
2568     BUILD_CONFIG=bootstrap-debug
2569     ;;
2570   no)
2571     bootstrap_suffix=no-bootstrap
2572     BUILD_CONFIG=
2573     ;;
2574 esac
2575
2576 AC_MSG_CHECKING(for default BUILD_CONFIG)
2577
2578 AC_ARG_WITH([build-config],
2579   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2580                   [use config/NAME.mk build configuration])],
2581   [case $with_build_config in
2582    yes) with_build_config= ;;
2583    no) with_build_config= BUILD_CONFIG= ;;
2584    esac])
2585
2586 if test "x${with_build_config}" != x; then
2587   BUILD_CONFIG=$with_build_config
2588 else
2589   case $BUILD_CONFIG in
2590   bootstrap-debug)
2591     if echo "int f (void) { return 0; }" > conftest.c &&
2592        ${CC} -c conftest.c &&
2593        mv conftest.o conftest.o.g0 &&
2594        ${CC} -c -g conftest.c &&
2595        mv conftest.o conftest.o.g &&
2596        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2597       :
2598     else
2599       BUILD_CONFIG=
2600     fi
2601     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2602     ;;
2603   esac
2604 fi
2605 AC_MSG_RESULT($BUILD_CONFIG)
2606 AC_SUBST(BUILD_CONFIG)
2607
2608 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2609 AC_MSG_CHECKING([for --enable-vtable-verify])
2610 AC_ARG_ENABLE(vtable-verify,
2611 [AS_HELP_STRING([--enable-vtable-verify],
2612                 [Enable vtable verification feature])],
2613 [case "$enableval" in
2614  yes) enable_vtable_verify=yes ;;
2615  no)  enable_vtable_verify=no ;;
2616  *)   enable_vtable_verify=no;;
2617  esac],
2618 [enable_vtable_verify=no])
2619 AC_MSG_RESULT($enable_vtable_verify)
2620
2621 # Record target_configdirs and the configure arguments for target and
2622 # build configuration in Makefile.
2623 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2624 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2625 bootstrap_fixincludes=no
2626
2627 # If we are building libgomp, bootstrap it.
2628 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2629   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2630 fi
2631
2632 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2633 # or bootstrap-ubsan, bootstrap it.
2634 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2635   case "$BUILD_CONFIG" in
2636     *bootstrap-asan* | *bootstrap-ubsan* )
2637       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2638       bootstrap_fixincludes=yes
2639       ;;
2640   esac
2641 fi
2642
2643 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2644 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2645    test "$enable_vtable_verify" != no; then
2646   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2647 fi
2648
2649 # If we are building libmpx, bootstrap it.
2650 if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
2651   bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
2652 fi
2653
2654 # Determine whether gdb needs tk/tcl or not.
2655 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2656 # and in that case we want gdb to be built without tk.  Ugh!
2657 # In fact I believe gdb is the *only* package directly dependent on tk,
2658 # so we should be able to put the 'maybe's in unconditionally and
2659 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2660 # 100% sure that that's safe though.
2661
2662 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2663 case "$enable_gdbtk" in
2664   no)
2665     GDB_TK="" ;;
2666   yes)
2667     GDB_TK="${gdb_tk}" ;;
2668   *)
2669     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2670     # distro.  Eventually someone will fix this and move Insight, nee
2671     # gdbtk to a separate directory.
2672     if test -d ${srcdir}/gdb/gdbtk ; then
2673       GDB_TK="${gdb_tk}"
2674     else
2675       GDB_TK=""
2676     fi
2677     ;;
2678 esac
2679 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2680 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2681
2682 # Strip out unwanted targets.
2683
2684 # While at that, we remove Makefiles if we were started for recursive
2685 # configuration, so that the top-level Makefile reconfigures them,
2686 # like we used to do when configure itself was recursive.
2687
2688 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2689 # but now we're fixing up the Makefile ourselves with the additional
2690 # commands passed to AC_CONFIG_FILES.  Use separate variables
2691 # extrasub-{build,host,target} not because there is any reason to split
2692 # the substitutions up that way, but only to remain below the limit of
2693 # 99 commands in a script, for HP-UX sed.
2694 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2695
2696 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2697   yes:yes:*\ gold\ *:*,c++,*) ;;
2698   yes:yes:*\ gold\ *:*)
2699     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2700     ;;
2701 esac
2702
2703 extrasub_build=
2704 for module in ${build_configdirs} ; do
2705   if test -z "${no_recursion}" \
2706      && test -f ${build_subdir}/${module}/Makefile; then
2707     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2708     rm -f ${build_subdir}/${module}/Makefile
2709   fi
2710   extrasub_build="$extrasub_build
2711 /^@if build-$module\$/d
2712 /^@endif build-$module\$/d
2713 /^@if build-$module-$bootstrap_suffix\$/d
2714 /^@endif build-$module-$bootstrap_suffix\$/d"
2715 done
2716 extrasub_host=
2717 for module in ${configdirs} ; do
2718   if test -z "${no_recursion}"; then
2719     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2720       if test -f ${file}; then
2721         echo 1>&2 "*** removing ${file} to force reconfigure"
2722         rm -f ${file}
2723       fi
2724     done
2725   fi
2726   case ${module},${bootstrap_fixincludes} in
2727     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2728     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2729   esac
2730   extrasub_host="$extrasub_host
2731 /^@if $module\$/d
2732 /^@endif $module\$/d
2733 /^@if $module-$host_bootstrap_suffix\$/d
2734 /^@endif $module-$host_bootstrap_suffix\$/d"
2735 done
2736 extrasub_target=
2737 for module in ${target_configdirs} ; do
2738   if test -z "${no_recursion}" \
2739      && test -f ${target_subdir}/${module}/Makefile; then
2740     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2741     rm -f ${target_subdir}/${module}/Makefile
2742   fi
2743
2744   # We only bootstrap target libraries listed in bootstrap_target_libs.
2745   case $bootstrap_target_libs in
2746     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2747     *) target_bootstrap_suffix=no-bootstrap ;;
2748   esac
2749
2750   extrasub_target="$extrasub_target
2751 /^@if target-$module\$/d
2752 /^@endif target-$module\$/d
2753 /^@if target-$module-$target_bootstrap_suffix\$/d
2754 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2755 done
2756
2757 # Do the final fixup along with target modules.
2758 extrasub_target="$extrasub_target
2759 /^@if /,/^@endif /d"
2760
2761 # Create the serialization dependencies.  This uses a temporary file.
2762
2763 AC_ARG_ENABLE([serial-configure],
2764 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2765                 [force sequential configuration of
2766                  sub-packages for the host, target or build
2767                  machine, or all sub-packages])])
2768
2769 case ${enable_serial_configure} in
2770   yes)
2771     enable_serial_build_configure=yes
2772     enable_serial_host_configure=yes
2773     enable_serial_target_configure=yes
2774     ;;
2775 esac
2776
2777 # These force 'configure's to be done one at a time, to avoid problems
2778 # with contention over a shared config.cache.
2779 rm -f serdep.tmp
2780 echo '# serdep.tmp' > serdep.tmp
2781 olditem=
2782 test "x${enable_serial_build_configure}" = xyes &&
2783 for item in ${build_configdirs} ; do
2784   case ${olditem} in
2785     "") ;;
2786     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2787   esac
2788   olditem=${item}
2789 done
2790 olditem=
2791 test "x${enable_serial_host_configure}" = xyes &&
2792 for item in ${configdirs} ; do
2793   case ${olditem} in
2794     "") ;;
2795     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2796   esac
2797   olditem=${item}
2798 done
2799 olditem=
2800 test "x${enable_serial_target_configure}" = xyes &&
2801 for item in ${target_configdirs} ; do
2802   case ${olditem} in
2803     "") ;;
2804     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2805   esac
2806   olditem=${item}
2807 done
2808 serialization_dependencies=serdep.tmp
2809 AC_SUBST_FILE(serialization_dependencies)
2810
2811 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2812 # target, nonopt, and variable assignments.  These are the ones we
2813 # might not want to pass down to subconfigures.  The exception being
2814 # --cache-file=/dev/null, which is used to turn off the use of cache
2815 # files altogether, and which should be passed on to subconfigures.
2816 # Also strip program-prefix, program-suffix, and program-transform-name,
2817 # so that we can pass down a consistent program-transform-name.
2818 baseargs=
2819 tbaseargs=
2820 keep_next=no
2821 skip_next=no
2822 eval "set -- $ac_configure_args"
2823 for ac_arg
2824 do
2825   if test X"$skip_next" = X"yes"; then
2826     skip_next=no
2827     continue
2828   fi
2829   if test X"$keep_next" = X"yes"; then
2830     case $ac_arg in
2831       *\'*)
2832         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2833     esac
2834     baseargs="$baseargs '$ac_arg'"
2835     tbaseargs="$tbaseargs '$ac_arg'"
2836     keep_next=no
2837     continue
2838   fi
2839
2840   # Handle separated arguments.  Based on the logic generated by
2841   # autoconf 2.59.
2842   case $ac_arg in
2843     *=* | --config-cache | -C | -disable-* | --disable-* \
2844       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2845       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2846       | -with-* | --with-* | -without-* | --without-* | --x)
2847       separate_arg=no
2848       ;;
2849     -*)
2850       separate_arg=yes
2851       ;;
2852     *)
2853       separate_arg=no
2854       ;;
2855   esac
2856
2857   skip_targ=no
2858   case $ac_arg in
2859 changequote(,)
2860   --with-* | --without-*)
2861     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2862
2863     case $libopt in
2864     *[-_]include)
2865       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2866       ;;
2867     *[-_]lib)
2868       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2869       ;;
2870     *)
2871       lib=$libopt
2872       ;;
2873     esac
2874 changequote([,])
2875
2876     case $lib in
2877     mpc | mpfr | gmp | isl)
2878       # If we're processing --with-$lib, --with-$lib-include or
2879       # --with-$lib-lib, for one of the libs above, and target is
2880       # different from host, don't pass the current argument to any
2881       # target library's configure.
2882       if test x$is_cross_compiler = xyes; then
2883         skip_targ=yes
2884       fi
2885       ;;
2886     esac
2887     ;;
2888   esac
2889
2890   case "$ac_arg" in
2891     --cache-file=/dev/null | \
2892     -cache-file=/dev/null )
2893       # Handled here to avoid the test to skip args below.
2894       baseargs="$baseargs '$ac_arg'"
2895       tbaseargs="$tbaseargs '$ac_arg'"
2896       # Assert: $separate_arg should always be no.
2897       keep_next=$separate_arg
2898       ;;
2899     --no*)
2900       continue
2901       ;;
2902     --c* | \
2903     --sr* | \
2904     --ho* | \
2905     --bu* | \
2906     --t* | \
2907     --program-* | \
2908     -cache_file* | \
2909     -srcdir* | \
2910     -host* | \
2911     -build* | \
2912     -target* | \
2913     -program-prefix* | \
2914     -program-suffix* | \
2915     -program-transform-name* )
2916       skip_next=$separate_arg
2917       continue
2918       ;;
2919     -*)
2920       # An option.  Add it.
2921       case $ac_arg in
2922         *\'*)
2923           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2924       esac
2925       baseargs="$baseargs '$ac_arg'"
2926       if test X"$skip_targ" = Xno; then
2927         tbaseargs="$tbaseargs '$ac_arg'"
2928       fi
2929       keep_next=$separate_arg
2930       ;;
2931     *)
2932       # Either a variable assignment, or a nonopt (triplet).  Don't
2933       # pass it down; let the Makefile handle this.
2934       continue
2935       ;;
2936   esac
2937 done
2938 # Remove the initial space we just introduced and, as these will be
2939 # expanded by make, quote '$'.
2940 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
2941
2942 # Add in --program-transform-name, after --program-prefix and
2943 # --program-suffix have been applied to it.  Autoconf has already
2944 # doubled dollar signs and backslashes in program_transform_name; we want
2945 # the backslashes un-doubled, and then the entire thing wrapped in single
2946 # quotes, because this will be expanded first by make and then by the shell.
2947 # Also, because we want to override the logic in subdir configure scripts to
2948 # choose program_transform_name, replace any s,x,x, with s,y,y,.
2949 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
2950 ${program_transform_name}
2951 EOF_SED
2952 gcc_transform_name=`cat conftestsed.out`
2953 rm -f conftestsed.out
2954 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
2955 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
2956 if test "$silent" = yes; then
2957   baseargs="$baseargs --silent"
2958   tbaseargs="$tbaseargs --silent"
2959 fi
2960 baseargs="$baseargs --disable-option-checking"
2961 tbaseargs="$tbaseargs --disable-option-checking"
2962
2963 # Record and document user additions to sub configure arguments.
2964 AC_ARG_VAR([build_configargs],
2965            [additional configure arguments for build directories])
2966 AC_ARG_VAR([host_configargs],
2967            [additional configure arguments for host directories])
2968 AC_ARG_VAR([target_configargs],
2969            [additional configure arguments for target directories])
2970
2971 # For the build-side libraries, we just need to pretend we're native,
2972 # and not use the same cache file.  Multilibs are neither needed nor
2973 # desired.  We can't even use the same cache file for all build-side
2974 # libraries, as they're compiled differently; some with C, some with
2975 # C++ or with different feature-enabling options.
2976 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
2977
2978 # For host modules, accept cache file option, or specification as blank.
2979 case "${cache_file}" in
2980 "") # empty
2981   cache_file_option="" ;;
2982 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
2983   cache_file_option="--cache-file=${cache_file}" ;;
2984 *) # relative path
2985   cache_file_option="--cache-file=../${cache_file}" ;;
2986 esac
2987
2988 # Host dirs don't like to share a cache file either, horribly enough.
2989 # This seems to be due to autoconf 2.5x stupidity.
2990 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
2991
2992 target_configargs="$target_configargs ${tbaseargs}"
2993
2994 # Passing a --with-cross-host argument lets the target libraries know
2995 # whether they are being built with a cross-compiler or being built
2996 # native.  However, it would be better to use other mechanisms to make the
2997 # sorts of decisions they want to make on this basis.  Please consider
2998 # this option to be deprecated.  FIXME.
2999 if test x${is_cross_compiler} = xyes ; then
3000   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3001 fi
3002
3003 # Special user-friendly check for native x86_64-linux build, if
3004 # multilib is not explicitly enabled.
3005 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3006   x86_64-*linux*:yes:$build:$build:)
3007     # Make sure we have a development environment that handles 32-bit
3008     dev64=no
3009     echo "int main () { return 0; }" > conftest.c
3010     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3011     if test $? = 0 ; then
3012       if test -s conftest || test -s conftest.exe ; then
3013         dev64=yes
3014       fi
3015     fi
3016     rm -f conftest*
3017     if test x${dev64} != xyes ; then
3018       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.])
3019     fi
3020     ;;
3021 esac
3022
3023 # Default to --enable-multilib.
3024 if test x${enable_multilib} = x ; then
3025   target_configargs="--enable-multilib ${target_configargs}"
3026 fi
3027
3028 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3029 # changed from the earlier setting of with_newlib.
3030 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3031   target_configargs="--with-newlib ${target_configargs}"
3032 fi
3033
3034 # Different target subdirs use different values of certain variables
3035 # (notably CXX).  Worse, multilibs use *lots* of different values.
3036 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3037 # it doesn't automatically accept command-line overrides of them.
3038 # This means it's not safe for target subdirs to share a cache file,
3039 # which is disgusting, but there you have it.  Hopefully this can be
3040 # fixed in future.  It's still worthwhile to use a cache file for each
3041 # directory.  I think.
3042
3043 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3044 # We need to pass --target, as newer autoconf's requires consistency
3045 # for target_alias and gcc doesn't manage it consistently.
3046 target_configargs="--cache-file=./config.cache ${target_configargs}"
3047
3048 FLAGS_FOR_TARGET=
3049 case " $target_configdirs " in
3050  *" newlib "*)
3051   case " $target_configargs " in
3052   *" --with-newlib "*)
3053    case "$target" in
3054     *-cygwin*)
3055       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3056       ;;
3057    esac
3058
3059    # If we're not building GCC, don't discard standard headers.
3060    if test -d ${srcdir}/gcc; then
3061      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3062
3063      if test "${build}" != "${host}"; then
3064        # On Canadian crosses, CC_FOR_TARGET will have already been set
3065        # by `configure', so we won't have an opportunity to add -Bgcc/
3066        # to it.  This is right: we don't want to search that directory
3067        # for binaries, but we want the header files in there, so add
3068        # them explicitly.
3069        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3070
3071        # Someone might think of using the pre-installed headers on
3072        # Canadian crosses, in case the installed compiler is not fully
3073        # compatible with the compiler being built.  In this case, it
3074        # would be better to flag an error than risking having
3075        # incompatible object files being constructed.  We can't
3076        # guarantee that an error will be flagged, but let's hope the
3077        # compiler will do it, when presented with incompatible header
3078        # files.
3079      fi
3080    fi
3081
3082    case "${target}-${is_cross_compiler}" in
3083    i[[3456789]]86-*-linux*-no)
3084       # Here host == target, so we don't need to build gcc,
3085       # so we don't want to discard standard headers.
3086       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3087       ;;
3088    *)
3089       # If we're building newlib, use its generic headers last, but search
3090       # for any libc-related directories first (so make it the last -B
3091       # switch).
3092       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3093
3094       # If we're building libgloss, find the startup file, simulator library
3095       # and linker script.
3096       case " $target_configdirs " in
3097         *" libgloss "*)
3098         # Look for startup file, simulator library and maybe linker script.
3099         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3100         # Look for libnosys.a in case the target needs it.
3101         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3102         # Most targets have the linker script in the source directory.
3103         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3104         ;;
3105       esac
3106       ;;
3107    esac
3108    ;;
3109   esac
3110   ;;
3111 esac
3112
3113 case "$target" in
3114   x86_64-*mingw* | *-w64-mingw*)
3115   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3116   # however, use a symlink named 'mingw' in ${prefix} .
3117     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3118     ;;
3119   *-mingw*)
3120   # MinGW can't be handled as Cygwin above since it does not use newlib.
3121     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
3122     ;;
3123 esac
3124
3125 # Allow the user to override the flags for
3126 # our build compiler if desired.
3127 if test x"${build}" = x"${host}" ; then
3128   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3129   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3130   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3131 fi
3132
3133 # On Canadian crosses, we'll be searching the right directories for
3134 # the previously-installed cross compiler, so don't bother to add
3135 # flags for directories within the install tree of the compiler
3136 # being built; programs in there won't even run.
3137 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3138   # Search for pre-installed headers if nothing else fits.
3139   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3140 fi
3141
3142 if test "x${use_gnu_ld}" = x &&
3143    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3144   # Arrange for us to find uninstalled linker scripts.
3145   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3146 fi
3147
3148 # Search for other target-specific linker scripts and such.
3149 case "${target}" in
3150   mep*)
3151     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3152     ;;
3153 esac
3154
3155 # Makefile fragments.
3156 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3157 do
3158   eval fragval=\$$frag
3159   if test $fragval != /dev/null; then
3160     eval $frag=${srcdir}/$fragval
3161   fi
3162 done
3163 AC_SUBST_FILE(host_makefile_frag)
3164 AC_SUBST_FILE(target_makefile_frag)
3165 AC_SUBST_FILE(alphaieee_frag)
3166 AC_SUBST_FILE(ospace_frag)
3167
3168 # Miscellanea: directories, flags, etc.
3169 AC_SUBST(RPATH_ENVVAR)
3170 AC_SUBST(GCC_SHLIB_SUBDIR)
3171 AC_SUBST(tooldir)
3172 AC_SUBST(build_tooldir)
3173 AC_SUBST(CONFIGURE_GDB_TK)
3174 AC_SUBST(GDB_TK)
3175 AC_SUBST(INSTALL_GDB_TK)
3176
3177 # Build module lists & subconfigure args.
3178 AC_SUBST(build_configargs)
3179 AC_SUBST(build_configdirs)
3180
3181 # Host module lists & subconfigure args.
3182 AC_SUBST(host_configargs)
3183 AC_SUBST(configdirs)
3184 AC_SUBST(target_configdirs)
3185
3186 # Target module lists & subconfigure args.
3187 AC_SUBST(target_configargs)
3188
3189
3190 # Build tools.
3191 AC_SUBST(AR_FOR_BUILD)
3192 AC_SUBST(AS_FOR_BUILD)
3193 AC_SUBST(CC_FOR_BUILD)
3194 AC_SUBST(CFLAGS_FOR_BUILD)
3195 AC_SUBST(CXXFLAGS_FOR_BUILD)
3196 AC_SUBST(CXX_FOR_BUILD)
3197 AC_SUBST(DLLTOOL_FOR_BUILD)
3198 AC_SUBST(GFORTRAN_FOR_BUILD)
3199 AC_SUBST(GOC_FOR_BUILD)
3200 AC_SUBST(LDFLAGS_FOR_BUILD)
3201 AC_SUBST(LD_FOR_BUILD)
3202 AC_SUBST(NM_FOR_BUILD)
3203 AC_SUBST(RANLIB_FOR_BUILD)
3204 AC_SUBST(WINDMC_FOR_BUILD)
3205 AC_SUBST(WINDRES_FOR_BUILD)
3206
3207 # Generate default definitions for YACC, M4, LEX and other programs that run
3208 # on the build machine.  These are used if the Makefile can't locate these
3209 # programs in objdir.
3210 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3211
3212 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3213 case " $build_configdirs " in
3214   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3215 esac
3216
3217 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3218 case " $build_configdirs " in
3219   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3220 esac
3221
3222 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3223 case " $build_configdirs " in
3224   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3225 esac
3226
3227 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3228 case " $build_configdirs " in
3229   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3230   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3231 esac
3232
3233 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3234 case " $build_configdirs " in
3235   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3236 esac
3237
3238 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3239 case " $build_configdirs " in
3240   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3241   *)
3242 changequote(,)
3243     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3244     # higher, else we use the "missing" dummy.
3245     if ${MAKEINFO} --version \
3246        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3247       :
3248     else
3249       MAKEINFO="$MISSING makeinfo"
3250     fi
3251     ;;
3252 changequote([,])
3253 esac
3254
3255 # FIXME: expect and dejagnu may become build tools?
3256
3257 AC_CHECK_PROGS(EXPECT, expect, expect)
3258 case " $configdirs " in
3259   *" expect "*)
3260     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3261     ;;
3262 esac
3263
3264 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3265 case " $configdirs " in
3266   *" dejagnu "*)
3267     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3268     ;;
3269 esac
3270
3271
3272 # Host tools.
3273 NCN_STRICT_CHECK_TOOLS(AR, ar)
3274 NCN_STRICT_CHECK_TOOLS(AS, as)
3275 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3276 NCN_STRICT_CHECK_TOOLS(LD, ld)
3277 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3278 NCN_STRICT_CHECK_TOOLS(NM, nm)
3279 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3280 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3281 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3282 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3283 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3284 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3285 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3286 AC_SUBST(CC)
3287 AC_SUBST(CXX)
3288 AC_SUBST(CFLAGS)
3289 AC_SUBST(CXXFLAGS)
3290
3291 # Target tools.
3292 AC_ARG_WITH([build-time-tools],
3293   [AS_HELP_STRING([--with-build-time-tools=PATH],
3294                   [use given path to find target tools during the build])],
3295   [case x"$withval" in
3296      x/*) ;;
3297      *)
3298        with_build_time_tools=
3299        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3300        ;;
3301    esac],
3302   [with_build_time_tools=])
3303
3304 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3305 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3306 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3307 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3308 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3309
3310 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3311 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3312 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3313 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3314 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3315 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3316 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3317 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3318 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3319 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3320 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3321 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3322 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3323
3324 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3325
3326 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3327 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3328 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3329 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3330 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3331                 [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],
3332                 c++)
3333 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3334                 [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],
3335                 c++)
3336 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3337 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3338 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3339                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3340 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3341                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3342 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3343 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3344 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3345 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3346 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3347 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3348 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3349 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3350 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3351 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3352
3353 AC_SUBST(FLAGS_FOR_TARGET)
3354 AC_SUBST(RAW_CXX_FOR_TARGET)
3355
3356 # Certain tools may need extra flags.
3357 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3358 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3359 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3360
3361 # When building target libraries, except in a Canadian cross, we use
3362 # the same toolchain as the compiler we just built.
3363 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3364 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3365 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3366 if test $host = $build; then
3367   case " $configdirs " in
3368     *" gcc "*)
3369       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3370       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3371       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3372       ;;
3373   esac
3374 fi
3375
3376 AC_SUBST(COMPILER_AS_FOR_TARGET)
3377 AC_SUBST(COMPILER_LD_FOR_TARGET)
3378 AC_SUBST(COMPILER_NM_FOR_TARGET)
3379
3380 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3381 AC_ARG_ENABLE(maintainer-mode,
3382 [AS_HELP_STRING([--enable-maintainer-mode],
3383                 [enable make rules and dependencies not useful
3384                  (and sometimes confusing) to the casual installer])],
3385       USE_MAINTAINER_MODE=$enableval,
3386       USE_MAINTAINER_MODE=no)
3387 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3388 AC_SUBST(MAINTAINER_MODE_TRUE)
3389 AC_SUBST(MAINTAINER_MODE_FALSE)
3390 if test "$USE_MAINTAINER_MODE" = yes; then
3391   MAINTAINER_MODE_TRUE=
3392   MAINTAINER_MODE_FALSE='#'
3393 else
3394   MAINTAINER_MODE_TRUE='#'
3395   MAINTAINER_MODE_FALSE=
3396 fi
3397 MAINT=$MAINTAINER_MODE_TRUE
3398 AC_SUBST(MAINT)dnl
3399
3400 # ---------------------
3401 # GCC bootstrap support
3402 # ---------------------
3403
3404 # Stage specific cflags for build.
3405 stage1_cflags="-g"
3406 case $build in
3407   vax-*-*)
3408     case ${GCC} in
3409       yes) stage1_cflags="-g -Wa,-J" ;;
3410       *) stage1_cflags="-g -J" ;;
3411     esac ;;
3412 esac
3413
3414 AC_SUBST(stage1_cflags)
3415
3416 # Enable --enable-checking in stage1 of the compiler.
3417 AC_ARG_ENABLE(stage1-checking,
3418 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3419                 [choose additional checking for stage1 of the compiler])],
3420 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3421 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3422   # For --disable-checking or implicit --enable-checking=release, avoid
3423   # setting --enable-checking=gc in the default stage1 checking for LTO
3424   # bootstraps.  See PR62077.
3425   case $BUILD_CONFIG in
3426     *lto*)
3427       stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
3428     *)
3429       stage1_checking=--enable-checking=yes,types;;
3430   esac
3431   if test "x$enable_checking" = x && \
3432      test -d ${srcdir}/gcc && \
3433      test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3434     stage1_checking=--enable-checking=yes,types,extra
3435   fi
3436 else
3437   stage1_checking=--enable-checking=$enable_checking,types
3438 fi])
3439 AC_SUBST(stage1_checking)
3440
3441 # Enable -Werror in bootstrap stage2 and later.
3442 AC_ARG_ENABLE(werror,
3443 [AS_HELP_STRING([--enable-werror],
3444                 [enable -Werror in bootstrap stage2 and later])], [],
3445 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3446   enable_werror=yes
3447 else
3448   enable_werror=no
3449 fi])
3450 case ${enable_werror} in
3451   yes) stage2_werror_flag="--enable-werror-always" ;;
3452   *) stage2_werror_flag="" ;;
3453 esac
3454 AC_SUBST(stage2_werror_flag)
3455
3456 # Enable --enable-host-shared.
3457 AC_ARG_ENABLE(host-shared,
3458 [AS_HELP_STRING([--enable-host-shared],
3459                 [build host code as shared libraries])],
3460 [host_shared=$enableval], [host_shared=no])
3461 AC_SUBST(host_shared)
3462
3463 # PR jit/64780: Require the user to explicitly specify
3464 # --enable-host-shared if the jit is enabled, hinting
3465 # that they might want to do a separate configure/build of
3466 # the jit, to avoid users from slowing down the rest of the
3467 # compiler by enabling the jit.
3468 if test ${host_shared} = "no" ; then
3469   case "${enable_languages}" in
3470     *jit*)
3471       AC_MSG_ERROR([
3472 Enabling language "jit" requires --enable-host-shared.
3473
3474 --enable-host-shared typically slows the rest of the compiler down by
3475 a few %, so you must explicitly enable it.
3476
3477 If you want to build both the jit and the regular compiler, it is often
3478 best to do this via two separate configure/builds, in separate
3479 directories, to avoid imposing the performance cost of
3480 --enable-host-shared on the regular compiler.])
3481       ;;
3482     *)
3483       ;;
3484   esac
3485 fi
3486
3487 # Specify what files to not compare during bootstrap.
3488
3489 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3490 case "$target" in
3491   hppa*64*-*-hpux*) ;;
3492   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3493   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3494 esac
3495 AC_SUBST(compare_exclusions)
3496
3497 AC_CONFIG_FILES([Makefile],
3498   [sed "$extrasub_build" Makefile |
3499    sed "$extrasub_host" |
3500    sed "$extrasub_target" > mf$$
3501    mv -f mf$$ Makefile],
3502   [extrasub_build="$extrasub_build"
3503    extrasub_host="$extrasub_host"
3504    extrasub_target="$extrasub_target"])
3505 AC_OUTPUT