configure.ac

   1 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   2 #   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
   3 #   2014, 2015, 2016, 2019 Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; see the file COPYING3.  If not see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 ##############################################################################
  20 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
  21
  22 m4_include(config/acx.m4)
  23 m4_include(config/override.m4)
  24 m4_include(config/proginstall.m4)
  25 m4_include(config/elf.m4)
  26 m4_include([libtool.m4])
  27 m4_include([ltoptions.m4])
  28 m4_include([ltsugar.m4])
  29 m4_include([ltversion.m4])
  30 m4_include([lt~obsolete.m4])
  31 m4_include([config/isl.m4])
  32
  33 AC_INIT(move-if-change)
  34 AC_DISABLE_OPTION_CHECKING
  35
  36 progname=$0
  37 # if PWD already has a value, it is probably wrong.
  38 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  39
  40 # Export original configure arguments for use by sub-configures.
  41 # Quote arguments with shell meta charatcers.
  42 TOPLEVEL_CONFIGURE_ARGUMENTS=
  43 set -- "$progname" "$@"
  44 for ac_arg
  45 do
  46   case "$ac_arg" in
  47   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  48     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  49     # if the argument is of the form -foo=baz, quote the baz part only
  50     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  51   *) ;;
  52   esac
  53   # Add the quoted argument to the list.
  54   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  55 done
  56 if test "$silent" = yes; then
  57   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  58 fi
  59 # Remove the initial space we just introduced and, as these will be
  60 # expanded by make, quote '$'.
  61 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  62 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  63
  64 # Find the build, host, and target systems.
  65 ACX_NONCANONICAL_BUILD
  66 ACX_NONCANONICAL_HOST
  67 ACX_NONCANONICAL_TARGET
  68
  69 dnl Autoconf 2.5x and later will set a default program prefix if
  70 dnl --target was used, even if it was the same as --host.  Disable
  71 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  72 dnl to take effect.
  73 test "$host_noncanonical" = "$target_noncanonical" &&
  74   test "$program_prefix$program_suffix$program_transform_name" = \
  75     NONENONEs,x,x, &&
  76   program_transform_name=s,y,y,
  77
  78 AC_CANONICAL_SYSTEM
  79 AC_ARG_PROGRAM
  80
  81 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  82 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  83
  84 # Get 'install' or 'install-sh' and its variants.
  85 AC_PROG_INSTALL
  86 ACX_PROG_LN
  87 AC_PROG_LN_S
  88 AC_PROG_SED
  89 AC_PROG_AWK
  90
  91 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  92
  93 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  94 # a relative path.
  95 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  96   INSTALL="${srcpwd}/install-sh -c"
  97 fi
  98
  99 # Set srcdir to "." if that's what it is.
 100 # This is important for multilib support.
 101 pwd=`${PWDCMD-pwd}`
 102 if test "${pwd}" = "${srcpwd}" ; then
 103   srcdir=.
 104 fi
 105
 106 topsrcdir=$srcpwd
 107
 108 extra_host_args=
 109
 110 ### To add a new directory to the tree, first choose whether it is a target
 111 ### or a host dependent tool.  Then put it into the appropriate list
 112 ### (library or tools, host or target), doing a dependency sort.
 113
 114 # Subdirs will be configured in the order listed in build_configdirs,
 115 # configdirs, or target_configdirs; see the serialization section below.
 116
 117 # Dependency sorting is only needed when *configuration* must be done in
 118 # a particular order.  In all cases a dependency should be specified in
 119 # the Makefile, whether or not it's implicitly specified here.
 120
 121 # Double entries in build_configdirs, configdirs, or target_configdirs may
 122 # cause circular dependencies and break everything horribly.
 123
 124 # these library is used by various programs built for the build
 125 # environment
 126 #
 127 build_libs="build-libiberty build-libcpp"
 128
 129 # these tools are built for the build environment
 130 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 131
 132 # these libraries are used by various programs built for the host environment
 133 #f
 134 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl libelf libiconv libctf"
 135
 136 # these tools are built for the host environment
 137 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 138 # know that we are building the simulator.
 139 # binutils, gas and ld appear in that order because it makes sense to run
 140 # "make check" in that particular order.
 141 # If --enable-gold is used, "gold" may replace "ld".
 142 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
 143
 144 # these libraries are built for the target environment, and are built after
 145 # the host libraries and the host tools (which may be a cross compiler)
 146 # Note that libiberty is not a target library.
 147 target_libraries="target-libgcc \
 148                 target-libbacktrace \
 149                 target-libgloss \
 150                 target-newlib \
 151                 target-libgomp \
 152                 target-liboffloadmic \
 153                 target-libhsail-rt \
 154                 target-libatomic \
 155                 target-libitm \
 156                 target-libstdc++-v3 \
 157                 target-libsanitizer \
 158                 target-libvtv \
 159                 target-libssp \
 160                 target-libquadmath \
 161                 target-libgfortran \
 162                 target-libffi \
 163                 target-libobjc \
 164                 target-libada \
 165                 target-libgo \
 166                 target-libphobos \
 167                 target-zlib"
 168
 169 # these tools are built using the target libraries, and are intended to
 170 # run only in the target environment
 171 #
 172 # note: any program that *uses* libraries that are in the "target_libraries"
 173 # list belongs in this list.
 174 #
 175 target_tools="target-rda"
 176
 177 ################################################################################
 178
 179 ## All tools belong in one of the four categories, and are assigned above
 180 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 181 ## is important because configure will choke if they ever get through.
 182 ## ${configdirs} is directories we build using the host tools.
 183 ## ${target_configdirs} is directories we build using the target tools.
 184 configdirs=`echo ${host_libs} ${host_tools}`
 185 target_configdirs=`echo ${target_libraries} ${target_tools}`
 186 build_configdirs=`echo ${build_libs} ${build_tools}`
 187
 188 m4_divert_text([PARSE_ARGS],
 189 [case $srcdir in
 190   *" "*)
 191 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 192     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 193 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 194     ;;
 195 esac
 196 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 197 ])
 198
 199 ################################################################################
 200
 201 srcname="gnu development package"
 202
 203 # This gets set non-empty for some net releases of packages.
 204 appdirs=""
 205
 206 # Define is_cross_compiler to save on calls to 'test'.
 207 is_cross_compiler=
 208 if test x"${host}" = x"${target}" ; then
 209   is_cross_compiler=no
 210 else
 211   is_cross_compiler=yes
 212 fi
 213
 214 # Find the build and target subdir names.
 215 GCC_TOPLEV_SUBDIRS
 216 # Be sure to cover against remnants of an in-tree build.
 217 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 218   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 219 Use a pristine source tree when building in a separate tree])
 220 fi
 221
 222 # Skipdirs are removed silently.
 223 skipdirs=
 224 # Noconfigdirs are removed loudly.
 225 noconfigdirs=""
 226
 227 use_gnu_ld=
 228 # Make sure we don't let GNU ld be added if we didn't want it.
 229 if test x$with_gnu_ld = xno ; then
 230   use_gnu_ld=no
 231   noconfigdirs="$noconfigdirs ld gold"
 232 fi
 233
 234 use_gnu_as=
 235 # Make sure we don't let GNU as be added if we didn't want it.
 236 if test x$with_gnu_as = xno ; then
 237   use_gnu_as=no
 238   noconfigdirs="$noconfigdirs gas"
 239 fi
 240
 241 use_included_zlib=
 242 AC_ARG_WITH(system-zlib,
 243 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
 244 # Make sure we don't let ZLIB be added if we didn't want it.
 245 if test x$with_system_zlib = xyes ; then
 246   use_included_zlib=no
 247   noconfigdirs="$noconfigdirs zlib"
 248 fi
 249
 250 # some tools are so dependent upon X11 that if we're not building with X,
 251 # it's not even worth trying to configure, much less build, that tool.
 252
 253 case ${with_x} in
 254   yes | "") ;; # the default value for this tree is that X11 is available
 255   no)
 256     skipdirs="${skipdirs} tk itcl libgui"
 257     # We won't be able to build gdbtk without X.
 258     enable_gdbtk=no
 259     ;;
 260   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 261 esac
 262
 263 # Some are only suitable for cross toolchains.
 264 # Remove these if host=target.
 265 cross_only="target-libgloss target-newlib target-opcodes"
 266
 267 case $is_cross_compiler in
 268   no) skipdirs="${skipdirs} ${cross_only}" ;;
 269 esac
 270
 271 # If both --with-headers and --with-libs are specified, default to
 272 # --without-newlib.
 273 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 274    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 275   if test x"${with_newlib}" = x ; then
 276     with_newlib=no
 277   fi
 278 fi
 279
 280 # Recognize --with-newlib/--without-newlib.
 281 case ${with_newlib} in
 282   no) skipdirs="${skipdirs} target-newlib" ;;
 283   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 284 esac
 285
 286 AC_ARG_ENABLE(as-accelerator-for,
 287 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 288                 [build as offload target compiler.
 289                 Specify offload host triple by ARG])])
 290
 291 AC_ARG_ENABLE(offload-targets,
 292 [AS_HELP_STRING([--enable-offload-targets=LIST],
 293                 [enable offloading to devices from comma-separated LIST of
 294                 TARGET[=DIR]. Use optional path to find offload target compiler
 295                 during the build])],
 296 [
 297   if test x"$enable_offload_targets" = x; then
 298     AC_MSG_ERROR([no offload targets specified])
 299   fi
 300 ], [enable_offload_targets=])
 301
 302 # Handle --enable-gold, --enable-ld.
 303 # --disable-gold [--enable-ld]
 304 #     Build only ld.  Default option.
 305 # --enable-gold [--enable-ld]
 306 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 307 #     as "ld.bfd" and "ld".
 308 # --enable-gold=default [--enable-ld]
 309 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 310 #     install ld as "ld.bfd".
 311 # --enable-gold[=default] --disable-ld
 312 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 313 # --enable-gold --enable-ld=default
 314 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 315 #     and ld.bfd).
 316 #     In other words, ld is default
 317 # --enable-gold=default --enable-ld=default
 318 #     Error.
 319
 320 default_ld=
 321 AC_ARG_ENABLE(gold,
 322 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 323                 [build gold @<:@ARG={default,yes,no}@:>@])],
 324 ENABLE_GOLD=$enableval,
 325 ENABLE_GOLD=no)
 326 case "${ENABLE_GOLD}" in
 327   yes|default)
 328     # Check for ELF target.
 329     is_elf=no
 330     case "${target}" in
 331       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 332       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 333       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 334       | *-*-solaris2* | *-*-nto* | *-*-nacl*)
 335         case "${target}" in
 336           *-*-linux*aout* | *-*-linux*oldld*)
 337             ;;
 338           *)
 339             is_elf=yes
 340             ;;
 341         esac
 342     esac
 343
 344     if test "$is_elf" = "yes"; then
 345       # Check for target supported by gold.
 346       case "${target}" in
 347         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 348         | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
 349           configdirs="$configdirs gold"
 350           if test x${ENABLE_GOLD} = xdefault; then
 351             default_ld=gold
 352           fi
 353           ENABLE_GOLD=yes
 354           ;;
 355       esac
 356     fi
 357     ;;
 358   no)
 359     ;;
 360   *)
 361     AC_MSG_ERROR([invalid --enable-gold argument])
 362     ;;
 363 esac
 364
 365 AC_ARG_ENABLE(ld,
 366 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 367                 [build ld @<:@ARG={default,yes,no}@:>@])],
 368 ENABLE_LD=$enableval,
 369 ENABLE_LD=yes)
 370
 371 case "${ENABLE_LD}" in
 372   default)
 373     if test x${default_ld} != x; then
 374       AC_MSG_ERROR([either gold or ld can be the default ld])
 375     fi
 376     ;;
 377   yes)
 378     ;;
 379   no)
 380     if test x${ENABLE_GOLD} != xyes; then
 381       AC_MSG_WARN([neither ld nor gold are enabled])
 382     fi
 383     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 384     ;;
 385   *)
 386     AC_MSG_ERROR([invalid --enable-ld argument])
 387     ;;
 388 esac
 389
 390 # PR gas/19109
 391 # Decide the default method for compressing debug sections.
 392 # Provide a configure time option to override our default.
 393 AC_ARG_ENABLE(compressed_debug_sections,
 394 [AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
 395                 [Enable compressed debug sections for gas, gold or ld by
 396                  default])],
 397 [
 398   if test x"$enable_compressed_debug_sections" = xyes; then
 399     AC_MSG_ERROR([no program with compressed debug sections specified])
 400   fi
 401 ], [enable_compressed_debug_sections=])
 402
 403 # Configure extra directories which are host specific
 404
 405 case "${host}" in
 406   *-cygwin*)
 407     configdirs="$configdirs libtermcap" ;;
 408 esac
 409
 410 # A target can indicate whether a language isn't supported for some reason.
 411 # Only spaces may be used in this macro; not newlines or tabs.
 412 unsupported_languages=
 413
 414 # Remove more programs from consideration, based on the host or
 415 # target this usually means that a port of the program doesn't
 416 # exist yet.
 417
 418 case "${host}" in
 419   i[[3456789]]86-*-msdosdjgpp*)
 420     noconfigdirs="$noconfigdirs tcl tk itcl"
 421     ;;
 422 esac
 423
 424
 425 AC_ARG_ENABLE(libquadmath,
 426 AS_HELP_STRING([--disable-libquadmath],
 427   [do not build libquadmath directory]),
 428 ENABLE_LIBQUADMATH=$enableval,
 429 ENABLE_LIBQUADMATH=yes)
 430 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 431   noconfigdirs="$noconfigdirs target-libquadmath"
 432 fi
 433
 434
 435 AC_ARG_ENABLE(libquadmath-support,
 436 AS_HELP_STRING([--disable-libquadmath-support],
 437   [disable libquadmath support for Fortran]),
 438 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 439 ENABLE_LIBQUADMATH_SUPPORT=yes)
 440 enable_libquadmath_support=
 441 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 442   enable_libquadmath_support=no
 443 fi
 444
 445
 446 AC_ARG_ENABLE(libada,
 447 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 448 ENABLE_LIBADA=$enableval,
 449 ENABLE_LIBADA=yes)
 450 if test "${ENABLE_LIBADA}" != "yes" ; then
 451   noconfigdirs="$noconfigdirs gnattools"
 452 fi
 453
 454 AC_ARG_ENABLE(libssp,
 455 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 456 ENABLE_LIBSSP=$enableval,
 457 ENABLE_LIBSSP=yes)
 458
 459 AC_ARG_ENABLE(libstdcxx,
 460 AS_HELP_STRING([--disable-libstdcxx],
 461   [do not build libstdc++-v3 directory]),
 462 ENABLE_LIBSTDCXX=$enableval,
 463 ENABLE_LIBSTDCXX=default)
 464 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 465   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 466 fi]
 467
 468 # If this is accelerator compiler and its target is intelmic we enable
 469 # target liboffloadmic by default.  If this is compiler with offloading
 470 # for intelmic we enable host liboffloadmic by default.  Otherwise
 471 # liboffloadmic is disabled by default.
 472 AC_ARG_ENABLE([liboffloadmic],
 473 AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
 474                [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
 475 [case "$enableval" in
 476   no | host | target)
 477     enable_liboffloadmic=$enableval ;;
 478   *)
 479     AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
 480 esac],
 481 [if test x"$enable_as_accelerator_for" != x; then
 482   case "${target}" in
 483     *-intelmic-* | *-intelmicemul-*)
 484       enable_liboffloadmic=target
 485       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
 486       ;;
 487     *)
 488       enable_liboffloadmic=no
 489       ;;
 490   esac
 491 else
 492   case "${enable_offload_targets}" in
 493     *-intelmic-* | *-intelmicemul-*)
 494       enable_liboffloadmic=host
 495       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
 496       ;;
 497     *)
 498       enable_liboffloadmic=no
 499       ;;
 500     esac
 501 fi])
 502 AC_SUBST(extra_liboffloadmic_configure_flags)
 503
 504 # Enable libgomp by default on hosted POSIX systems, and a few others.
 505 if test x$enable_libgomp = x ; then
 506     case "${target}" in
 507     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 508         ;;
 509     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 510         ;;
 511     *-*-solaris2* | *-*-hpux11*)
 512         ;;
 513     *-*-darwin* | *-*-aix*)
 514         ;;
 515     nvptx*-*-*)
 516         ;;
 517     *)
 518         noconfigdirs="$noconfigdirs target-libgomp"
 519         ;;
 520     esac
 521 fi
 522
 523 # Disable libatomic on unsupported systems.
 524 if test -d ${srcdir}/libatomic; then
 525     if test x$enable_libatomic = x; then
 526         AC_MSG_CHECKING([for libatomic support])
 527         if (srcdir=${srcdir}/libatomic; \
 528                 . ${srcdir}/configure.tgt; \
 529                 test -n "$UNSUPPORTED")
 530         then
 531             AC_MSG_RESULT([no])
 532             noconfigdirs="$noconfigdirs target-libatomic"
 533         else
 534             AC_MSG_RESULT([yes])
 535         fi
 536     fi
 537 fi
 538
 539 # Disable liboffloadmic on unsupported systems.
 540 if test -d ${srcdir}/liboffloadmic; then
 541     if test x$enable_liboffloadmic != xno; then
 542         AC_MSG_CHECKING([for liboffloadmic support])
 543         if (srcdir=${srcdir}/liboffloadmic; \
 544                 . ${srcdir}/configure.tgt; \
 545                 test -n "$UNSUPPORTED")
 546         then
 547             AC_MSG_RESULT([no])
 548             noconfigdirs="$noconfigdirs target-liboffloadmic"
 549         else
 550             AC_MSG_RESULT([yes])
 551         fi
 552     fi
 553 fi
 554
 555 # Disable libitm on unsupported systems.
 556 if test -d ${srcdir}/libitm; then
 557     if test x$enable_libitm = x; then
 558         AC_MSG_CHECKING([for libitm support])
 559         if (srcdir=${srcdir}/libitm; \
 560                 . ${srcdir}/configure.tgt; \
 561                 test -n "$UNSUPPORTED")
 562         then
 563             AC_MSG_RESULT([no])
 564             noconfigdirs="$noconfigdirs target-libitm"
 565         else
 566             AC_MSG_RESULT([yes])
 567         fi
 568     fi
 569 fi
 570
 571 # Disable libsanitizer on unsupported systems.
 572 if test -d ${srcdir}/libsanitizer; then
 573     if test x$enable_libsanitizer = x; then
 574         AC_MSG_CHECKING([for libsanitizer support])
 575         if (srcdir=${srcdir}/libsanitizer; \
 576                 . ${srcdir}/configure.tgt; \
 577                 test -n "$UNSUPPORTED")
 578         then
 579             AC_MSG_RESULT([no])
 580             noconfigdirs="$noconfigdirs target-libsanitizer"
 581         else
 582             AC_MSG_RESULT([yes])
 583         fi
 584     fi
 585 fi
 586
 587 # Disable libvtv on unsupported systems.
 588 if test -d ${srcdir}/libvtv; then
 589     if test x$enable_libvtv = x; then
 590         AC_MSG_CHECKING([for libvtv support])
 591         if (srcdir=${srcdir}/libvtv; \
 592                 . ${srcdir}/configure.tgt; \
 593                 test "$VTV_SUPPORTED" != "yes")
 594         then
 595             AC_MSG_RESULT([no])
 596             noconfigdirs="$noconfigdirs target-libvtv"
 597         else
 598             AC_MSG_RESULT([yes])
 599         fi
 600     fi
 601 fi
 602
 603
 604 # Disable libhsail-rt on unsupported systems.
 605 if test -d ${srcdir}/libhsail-rt; then
 606     if test x$enable_libhsail_rt = x; then
 607         AC_MSG_CHECKING([for libhsail-rt support])
 608         if (srcdir=${srcdir}/libhsail-rt; \
 609                 . ${srcdir}/configure.tgt; \
 610                 test -n "$UNSUPPORTED")
 611         then
 612             AC_MSG_RESULT([no])
 613             unsupported_languages="$unsupported_languages brig"
 614             # This implicitly disables also target-libhsail-rt as it won't
 615             # get added to the build without BRIG FE.
 616         else
 617             AC_MSG_RESULT([yes])
 618         fi
 619     fi
 620 fi
 621
 622
 623 # Disable libquadmath for some systems.
 624 case "${target}" in
 625   avr-*-*)
 626     noconfigdirs="$noconfigdirs target-libquadmath"
 627     ;;
 628   # libquadmath is unused on AIX and libquadmath build process use of
 629   # LD_LIBRARY_PATH can break AIX bootstrap.
 630   powerpc-*-aix* | rs6000-*-aix*)
 631     noconfigdirs="$noconfigdirs target-libquadmath"
 632     ;;
 633 esac
 634
 635 # Disable libssp for some systems.
 636 case "${target}" in
 637   avr-*-*)
 638     # No hosted I/O support.
 639     noconfigdirs="$noconfigdirs target-libssp"
 640     ;;
 641   powerpc-*-aix* | rs6000-*-aix*)
 642     noconfigdirs="$noconfigdirs target-libssp"
 643     ;;
 644   pru-*-*)
 645     # No hosted I/O support.
 646     noconfigdirs="$noconfigdirs target-libssp"
 647     ;;
 648   rl78-*-*)
 649     # libssp uses a misaligned load to trigger a fault, but the RL78
 650     # doesn't fault for those - instead, it gives a build-time error
 651     # for explicit misaligned loads.
 652     noconfigdirs="$noconfigdirs target-libssp"
 653     ;;
 654   visium-*-*)
 655     # No hosted I/O support.
 656     noconfigdirs="$noconfigdirs target-libssp"
 657     ;;
 658 esac
 659
 660 # Disable libstdc++-v3 for some systems.
 661 # Allow user to override this if they pass --enable-libstdc++-v3
 662 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 663   case "${target}" in
 664     *-*-vxworks*)
 665       # VxWorks uses the Dinkumware C++ library.
 666       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 667       ;;
 668     arm*-wince-pe*)
 669       # the C++ libraries don't build on top of CE's C libraries
 670       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 671       ;;
 672     avr-*-*)
 673       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 674       ;;
 675     ft32-*-*)
 676       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 677       ;;
 678   esac
 679 fi
 680
 681 # Disable D on systems where it is known to not work.
 682 # For testing, you can override this with --enable-languages=d.
 683 case ,${enable_languages}, in
 684   *,d,*)
 685     ;;
 686   *)
 687     case "${target}" in
 688       *-*-darwin*)
 689         unsupported_languages="$unsupported_languages d"
 690         ;;
 691     esac
 692     ;;
 693 esac
 694
 695 # Disable libphobos on unsupported systems.
 696 # For testing, you can override this with --enable-libphobos.
 697 if test -d ${srcdir}/libphobos; then
 698     if test x$enable_libphobos = x; then
 699         AC_MSG_CHECKING([for libphobos support])
 700         if (srcdir=${srcdir}/libphobos; \
 701                 . ${srcdir}/configure.tgt; \
 702                 test "$LIBPHOBOS_SUPPORTED" != "yes")
 703         then
 704             AC_MSG_RESULT([no])
 705             noconfigdirs="$noconfigdirs target-libphobos"
 706         else
 707             AC_MSG_RESULT([yes])
 708         fi
 709     fi
 710 fi
 711
 712 # Disable Fortran for some systems.
 713 case "${target}" in
 714   mmix-*-*)
 715     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 716     unsupported_languages="$unsupported_languages fortran"
 717     ;;
 718 esac
 719
 720 # Disable libffi for some systems.
 721 case "${target}" in
 722   powerpc-*-darwin*)
 723     ;;
 724   i[[3456789]]86-*-darwin*)
 725     ;;
 726   x86_64-*-darwin[[912]]*)
 727     ;;
 728   *-*-darwin*)
 729     noconfigdirs="$noconfigdirs target-libffi"
 730     ;;
 731   *-*-netware*)
 732     noconfigdirs="$noconfigdirs target-libffi"
 733     ;;
 734   *-*-phoenix*)
 735     noconfigdirs="$noconfigdirs target-libffi"
 736     ;;
 737   *-*-rtems*)
 738     noconfigdirs="$noconfigdirs target-libffi"
 739     ;;
 740   *-*-tpf*)
 741     noconfigdirs="$noconfigdirs target-libffi"
 742     ;;
 743   *-*-uclinux*)
 744     noconfigdirs="$noconfigdirs target-libffi"
 745     ;;
 746   *-*-vxworks*)
 747     noconfigdirs="$noconfigdirs target-libffi"
 748     ;;
 749   aarch64*-*-freebsd*)
 750     noconfigdirs="$noconfigdirs target-libffi"
 751     ;;
 752   alpha*-*-*vms*)
 753     noconfigdirs="$noconfigdirs target-libffi"
 754     ;;
 755   arm*-*-freebsd*)
 756     noconfigdirs="$noconfigdirs target-libffi"
 757     ;;
 758   arm-wince-pe)
 759     noconfigdirs="$noconfigdirs target-libffi"
 760     ;;
 761   arm*-*-symbianelf*)
 762     noconfigdirs="$noconfigdirs target-libffi"
 763     ;;
 764   cris-*-* | crisv32-*-*)
 765     case "${target}" in
 766       *-*-linux*)
 767         ;;
 768       *) # See PR46792 regarding target-libffi.
 769         noconfigdirs="$noconfigdirs target-libffi";;
 770     esac
 771     ;;
 772   hppa*64*-*-hpux*)
 773     noconfigdirs="$noconfigdirs target-libffi"
 774     ;;
 775   hppa*-hp-hpux11*)
 776     ;;
 777   hppa*-*-hpux*)
 778     noconfigdirs="$noconfigdirs target-libffi"
 779     ;;
 780   ia64*-*-*vms*)
 781     noconfigdirs="$noconfigdirs target-libffi"
 782     ;;
 783   i[[3456789]]86-w64-mingw*)
 784     noconfigdirs="$noconfigdirs target-libffi"
 785     ;;
 786   i[[3456789]]86-*-mingw*)
 787     noconfigdirs="$noconfigdirs target-libffi"
 788     ;;
 789   x86_64-*-mingw*)
 790     noconfigdirs="$noconfigdirs target-libffi"
 791     ;;
 792   mmix-*-*)
 793     noconfigdirs="$noconfigdirs target-libffi"
 794     ;;
 795   powerpc-*-aix*)
 796     ;;
 797   rs6000-*-aix*)
 798     ;;
 799   ft32-*-*)
 800     noconfigdirs="$noconfigdirs target-libffi"
 801     ;;
 802   *-*-lynxos*)
 803     noconfigdirs="$noconfigdirs target-libffi"
 804     ;;
 805 esac
 806
 807 # Disable the go frontend on systems where it is known to not work. Please keep
 808 # this in sync with contrib/config-list.mk.
 809 case "${target}" in
 810 *-*-darwin* | *-*-cygwin* | *-*-mingw*)
 811     unsupported_languages="$unsupported_languages go"
 812     ;;
 813 esac
 814
 815 # Disable libgo for some systems where it is known to not work.
 816 # For testing, you can easily override this with --enable-libgo.
 817 if test x$enable_libgo = x; then
 818     case "${target}" in
 819     *-*-darwin*)
 820         # PR 46986
 821         noconfigdirs="$noconfigdirs target-libgo"
 822         ;;
 823     *-*-cygwin* | *-*-mingw*)
 824         noconfigdirs="$noconfigdirs target-libgo"
 825         ;;
 826     esac
 827 fi
 828
 829 # Default libgloss CPU subdirectory.
 830 libgloss_dir="$target_cpu"
 831
 832 case "${target}" in
 833   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 834     libgloss_dir=wince
 835     ;;
 836   aarch64*-*-* )
 837     libgloss_dir=aarch64
 838     ;;
 839   arm*-*-*)
 840     libgloss_dir=arm
 841     ;;
 842   cris-*-* | crisv32-*-*)
 843     libgloss_dir=cris
 844     ;;
 845   hppa*-*-*)
 846     libgloss_dir=pa
 847     ;;
 848   i[[3456789]]86-*-*)
 849     libgloss_dir=i386
 850     ;;
 851   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 852     libgloss_dir=m68hc11
 853     ;;
 854   m68*-*-* | fido-*-*)
 855     libgloss_dir=m68k
 856     ;;
 857   mips*-*-*)
 858     libgloss_dir=mips
 859     ;;
 860   powerpc*-*-*)
 861     libgloss_dir=rs6000
 862     ;;
 863   pru-*-*)
 864     libgloss_dir=pru
 865     ;;
 866   sparc*-*-*)
 867     libgloss_dir=sparc
 868     ;;
 869 esac
 870
 871 # Disable newlib and libgloss for various target OSes.
 872 case "${target}" in
 873   alpha*-dec-osf*)
 874     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 875     ;;
 876   i[[3456789]]86-*-linux*)
 877     # This section makes it possible to build newlib natively on linux.
 878     # If we are using a cross compiler then don't configure newlib.
 879     if test x${is_cross_compiler} != xno ; then
 880       noconfigdirs="$noconfigdirs target-newlib"
 881     fi
 882     noconfigdirs="$noconfigdirs target-libgloss"
 883     # If we are not using a cross compiler, do configure newlib.
 884     # Note however, that newlib will only be configured in this situation
 885     # if the --with-newlib option has been given, because otherwise
 886     # 'target-newlib' will appear in skipdirs.
 887     ;;
 888   i[[3456789]]86-*-rdos*)
 889     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 890     ;;
 891   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 892     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 893     ;;
 894   sparc-*-sunos4*)
 895     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 896     ;;
 897   *-*-aix*)
 898     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 899     ;;
 900   *-*-beos*)
 901     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 902     ;;
 903   *-*-chorusos)
 904     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 905     ;;
 906   *-*-dragonfly*)
 907     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 908     ;;
 909   *-*-freebsd*)
 910     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 911     ;;
 912   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 913     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 914     ;;
 915   *-*-lynxos*)
 916     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 917     ;;
 918   *-*-mingw*)
 919     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 920     ;;
 921   *-*-netbsd*)
 922     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 923     ;;
 924   *-*-netware*)
 925     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 926     ;;
 927   *-*-tpf*)
 928     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 929     ;;
 930   *-*-uclinux*)
 931     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 932     ;;
 933   *-*-vxworks*)
 934     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 935     ;;
 936 esac
 937
 938 case "${target}" in
 939   *-*-chorusos)
 940     ;;
 941   aarch64-*-darwin*)
 942     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 943     noconfigdirs="$noconfigdirs sim target-rda"
 944     ;;
 945   amdgcn*-*-*)
 946     ;;
 947   arm-*-darwin*)
 948     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 949     noconfigdirs="$noconfigdirs sim target-rda"
 950     ;;
 951   powerpc-*-darwin*)
 952     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 953     noconfigdirs="$noconfigdirs sim target-rda"
 954     ;;
 955   i[[3456789]]86-*-darwin*)
 956     noconfigdirs="$noconfigdirs ld gprof"
 957     noconfigdirs="$noconfigdirs sim target-rda"
 958     ;;
 959   x86_64-*-darwin[[912]]*)
 960     noconfigdirs="$noconfigdirs ld gas gprof"
 961     noconfigdirs="$noconfigdirs sim target-rda"
 962     ;;
 963   *-*-darwin*)
 964     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 965     noconfigdirs="$noconfigdirs sim target-rda"
 966     ;;
 967   *-*-dragonfly*)
 968     ;;
 969   *-*-freebsd*)
 970     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 971         && test -f /usr/local/include/gmp.h; then
 972       with_gmp=/usr/local
 973     fi
 974     ;;
 975   *-*-kaos*)
 976     # Remove unsupported stuff on all kaOS configurations.
 977     noconfigdirs="$noconfigdirs target-libgloss"
 978     ;;
 979   *-*-netbsd*)
 980     ;;
 981   *-*-netware*)
 982     ;;
 983   *-*-phoenix*)
 984     noconfigdirs="$noconfigdirs target-libgloss"
 985     ;;
 986   *-*-rtems*)
 987     noconfigdirs="$noconfigdirs target-libgloss"
 988     ;;
 989     # The tpf target doesn't support gdb yet.
 990   *-*-tpf*)
 991     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
 992     ;;
 993   *-*-uclinux*)
 994     noconfigdirs="$noconfigdirs target-rda"
 995     ;;
 996   *-*-vxworks*)
 997     ;;
 998   alpha*-dec-osf*)
 999     # ld works, but does not support shared libraries.
1000     # gas doesn't generate exception information.
1001     noconfigdirs="$noconfigdirs gas ld"
1002     ;;
1003   alpha*-*-*vms*)
1004     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1005     ;;
1006   alpha*-*-*)
1007     # newlib is not 64 bit ready
1008     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1009     ;;
1010   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1011     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1012     ;;
1013   arc*-*-*)
1014     noconfigdirs="$noconfigdirs sim"
1015     ;;
1016   arm-*-pe*)
1017     noconfigdirs="$noconfigdirs target-libgloss"
1018     ;;
1019   arm-*-riscix*)
1020     noconfigdirs="$noconfigdirs ld target-libgloss"
1021     ;;
1022   avr-*-*)
1023     if test x${with_avrlibc} != xno; then
1024       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1025     fi
1026     ;;
1027   c4x-*-* | tic4x-*-*)
1028     noconfigdirs="$noconfigdirs target-libgloss"
1029     ;;
1030   tic54x-*-*)
1031     noconfigdirs="$noconfigdirs target-libgloss gdb"
1032     ;;
1033   d10v-*-*)
1034     noconfigdirs="$noconfigdirs target-libgloss"
1035     ;;
1036   d30v-*-*)
1037     noconfigdirs="$noconfigdirs gdb"
1038     ;;
1039   fr30-*-elf*)
1040     noconfigdirs="$noconfigdirs gdb"
1041     ;;
1042   ft32-*-*)
1043     noconfigdirs="$noconfigdirs target-rda gprof"
1044     ;;
1045   moxie-*-*)
1046     noconfigdirs="$noconfigdirs"
1047     ;;
1048   h8300*-*-*)
1049     noconfigdirs="$noconfigdirs target-libgloss"
1050     ;;
1051   h8500-*-*)
1052     noconfigdirs="$noconfigdirs target-libgloss"
1053     ;;
1054   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1055     ;;
1056   hppa*64*-*-hpux*)
1057     noconfigdirs="$noconfigdirs gdb"
1058     ;;
1059   hppa*-*-hpux11*)
1060     noconfigdirs="$noconfigdirs gdb ld"
1061     ;;
1062   hppa*64*-*-linux*)
1063     ;;
1064   hppa*-*-linux*)
1065     ;;
1066   hppa*-*-*elf* | \
1067   hppa*-*-lites* | \
1068   hppa*-*-openbsd* | \
1069   hppa*64*-*-*)
1070     ;;
1071   hppa*-*-pro*)
1072     ;;
1073   hppa*-*-*)
1074     noconfigdirs="$noconfigdirs ld"
1075     ;;
1076   i960-*-*)
1077     noconfigdirs="$noconfigdirs gdb"
1078     ;;
1079   ia64*-*-elf*)
1080     # No gdb support yet.
1081     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1082     ;;
1083   ia64*-**-hpux*)
1084     # No ld support yet.
1085     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1086     ;;
1087   ia64*-*-*vms*)
1088     # No ld support yet.
1089     noconfigdirs="$noconfigdirs libgui itcl ld"
1090     ;;
1091   i[[3456789]]86-w64-mingw*)
1092     ;;
1093   i[[3456789]]86-*-mingw*)
1094     target_configdirs="$target_configdirs target-winsup"
1095     ;;
1096   *-*-cygwin*)
1097     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1098     noconfigdirs="$noconfigdirs target-libgloss"
1099     # always build newlib if winsup directory is present.
1100     if test -d "$srcdir/winsup/cygwin"; then
1101       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1102     elif test -d "$srcdir/newlib"; then
1103       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1104     fi
1105     ;;
1106   i[[3456789]]86-*-pe)
1107     noconfigdirs="$noconfigdirs target-libgloss"
1108     ;;
1109   i[[3456789]]86-*-sco3.2v5*)
1110     # The linker does not yet know about weak symbols in COFF,
1111     # and is not configured to handle mixed ELF and COFF.
1112     noconfigdirs="$noconfigdirs ld target-libgloss"
1113     ;;
1114   i[[3456789]]86-*-sco*)
1115     noconfigdirs="$noconfigdirs gprof target-libgloss"
1116     ;;
1117   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1118     noconfigdirs="$noconfigdirs target-libgloss"
1119     ;;
1120   i[[3456789]]86-*-sysv4*)
1121     noconfigdirs="$noconfigdirs target-libgloss"
1122     ;;
1123   i[[3456789]]86-*-beos*)
1124     noconfigdirs="$noconfigdirs gdb"
1125     ;;
1126   i[[3456789]]86-*-rdos*)
1127     noconfigdirs="$noconfigdirs gdb"
1128     ;;
1129   mmix-*-*)
1130     noconfigdirs="$noconfigdirs gdb"
1131     ;;
1132   mt-*-*)
1133     noconfigdirs="$noconfigdirs sim"
1134     ;;
1135   nfp-*-*)
1136     noconfigdirs="$noconfigdirs ld gas gdb gprof sim"
1137     noconfigdirs="$noconfigdirs $target_libraries"
1138     ;;
1139   powerpc-*-aix*)
1140     # copied from rs6000-*-* entry
1141     noconfigdirs="$noconfigdirs gprof"
1142     ;;
1143   powerpc*-*-winnt* | powerpc*-*-pe*)
1144     target_configdirs="$target_configdirs target-winsup"
1145     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1146     # always build newlib.
1147     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1148     ;;
1149     # This is temporary until we can link against shared libraries
1150   powerpcle-*-solaris*)
1151     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1152     ;;
1153   powerpc-*-beos*)
1154     noconfigdirs="$noconfigdirs gdb"
1155     ;;
1156   rs6000-*-lynxos*)
1157     noconfigdirs="$noconfigdirs gprof"
1158     ;;
1159   rs6000-*-aix*)
1160     noconfigdirs="$noconfigdirs gprof"
1161     ;;
1162   rs6000-*-*)
1163     noconfigdirs="$noconfigdirs gprof"
1164     ;;
1165   m68k-apollo-*)
1166     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1167     ;;
1168   microblaze*)
1169     noconfigdirs="$noconfigdirs gprof"
1170     ;;
1171   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1172     if test x$with_newlib = xyes; then
1173       noconfigdirs="$noconfigdirs gprof"
1174     fi
1175     ;;
1176   mips*-*-irix5*)
1177     noconfigdirs="$noconfigdirs gprof target-libgloss"
1178     ;;
1179   mips*-*-irix6*)
1180     noconfigdirs="$noconfigdirs gprof target-libgloss"
1181     ;;
1182   mips*-*-bsd*)
1183     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1184     ;;
1185   mips*-*-linux*)
1186     ;;
1187   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1188   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1189     noconfigdirs="$noconfigdirs ld gas gprof"
1190     ;;
1191   mips*-*-*)
1192     noconfigdirs="$noconfigdirs gprof"
1193     ;;
1194   nvptx*-*-*)
1195     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1196     ;;
1197   sh-*-*)
1198     case "${target}" in
1199       sh*-*-elf)
1200          ;;
1201       *)
1202          noconfigdirs="$noconfigdirs target-libgloss" ;;
1203     esac
1204     ;;
1205   sparc-*-sunos4*)
1206     if test x${is_cross_compiler} = xno ; then
1207            use_gnu_ld=no
1208     fi
1209     ;;
1210   tic6x-*-*)
1211     noconfigdirs="$noconfigdirs sim"
1212     ;;
1213   tilepro*-*-* | tilegx*-*-*)
1214     noconfigdirs="$noconfigdirs sim"
1215     ;;
1216   v810-*-*)
1217     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1218     ;;
1219   vax-*-*)
1220     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1221     ;;
1222   wasm32-*-*)
1223     noconfigdirs="$noconfigdirs ld"
1224     ;;
1225 esac
1226
1227 # If we aren't building newlib, then don't build libgloss, since libgloss
1228 # depends upon some newlib header files.
1229 case "${noconfigdirs}" in
1230   *target-libgloss*) ;;
1231   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1232 esac
1233
1234 # Work in distributions that contain no compiler tools, like Autoconf.
1235 host_makefile_frag=/dev/null
1236 if test -d ${srcdir}/config ; then
1237 case "${host}" in
1238   i[[3456789]]86-*-msdosdjgpp*)
1239     host_makefile_frag="config/mh-djgpp"
1240     ;;
1241   *-cygwin*)
1242     ACX_CHECK_CYGWIN_CAT_WORKS
1243     host_makefile_frag="config/mh-cygwin"
1244     ;;
1245   *-mingw*)
1246     host_makefile_frag="config/mh-mingw"
1247     ;;
1248   alpha*-linux*)
1249     host_makefile_frag="config/mh-alpha-linux"
1250     ;;
1251   hppa*-hp-hpux10*)
1252     host_makefile_frag="config/mh-pa-hpux10"
1253     ;;
1254   hppa*-hp-hpux*)
1255     host_makefile_frag="config/mh-pa"
1256     ;;
1257   hppa*-*)
1258     host_makefile_frag="config/mh-pa"
1259     ;;
1260   *-*-darwin*)
1261     host_makefile_frag="config/mh-darwin"
1262     ;;
1263   powerpc-*-aix*)
1264     host_makefile_frag="config/mh-ppc-aix"
1265     ;;
1266   rs6000-*-aix*)
1267     host_makefile_frag="config/mh-ppc-aix"
1268     ;;
1269 esac
1270 fi
1271
1272 if test "${build}" != "${host}" ; then
1273   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1274   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1275   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1276   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1277   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1278   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1279   GDC_FOR_BUILD=${GDC_FOR_BUILD-gdc}
1280   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1281   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1282   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1283   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1284   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1285   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1286 else
1287   AR_FOR_BUILD="\$(AR)"
1288   AS_FOR_BUILD="\$(AS)"
1289   CC_FOR_BUILD="\$(CC)"
1290   CXX_FOR_BUILD="\$(CXX)"
1291   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1292   GOC_FOR_BUILD="\$(GOC)"
1293   GDC_FOR_BUILD="\$(GDC)"
1294   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1295   LD_FOR_BUILD="\$(LD)"
1296   NM_FOR_BUILD="\$(NM)"
1297   RANLIB_FOR_BUILD="\$(RANLIB)"
1298   WINDRES_FOR_BUILD="\$(WINDRES)"
1299   WINDMC_FOR_BUILD="\$(WINDMC)"
1300 fi
1301
1302 AC_PROG_CC
1303 AC_PROG_CXX
1304
1305 # We must set the default linker to the linker used by gcc for the correct
1306 # operation of libtool.  If LD is not defined and we are using gcc, try to
1307 # set the LD default to the ld used by gcc.
1308 if test -z "$LD"; then
1309   if test "$GCC" = yes; then
1310     case $build in
1311     *-*-mingw*)
1312       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1313     *)
1314       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1315     esac
1316     case $gcc_prog_ld in
1317     # Accept absolute paths.
1318     [[\\/]* | [A-Za-z]:[\\/]*)]
1319       LD="$gcc_prog_ld" ;;
1320     esac
1321   fi
1322 fi
1323
1324 # Check whether -static-libstdc++ -static-libgcc is supported.
1325 have_static_libs=no
1326 if test "$GCC" = yes; then
1327   saved_LDFLAGS="$LDFLAGS"
1328
1329   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1330   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1331   AC_LANG_PUSH(C++)
1332   AC_LINK_IFELSE([AC_LANG_SOURCE([
1333 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1334 #error -static-libstdc++ not implemented
1335 #endif
1336 int main() {}])],
1337     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1338     [AC_MSG_RESULT([no])])
1339   AC_LANG_POP(C++)
1340
1341   LDFLAGS="$saved_LDFLAGS"
1342 fi
1343
1344 ACX_PROG_GNAT
1345 ACX_PROG_CMP_IGNORE_INITIAL
1346
1347 AC_ARG_ENABLE([bootstrap],
1348 [AS_HELP_STRING([--enable-bootstrap],
1349                 [enable bootstrapping @<:@yes if native build@:>@])],,
1350 enable_bootstrap=default)
1351
1352 # Issue errors and warnings for invalid/strange bootstrap combinations.
1353 if test -r $srcdir/gcc/configure; then
1354   have_compiler=yes
1355 else
1356   have_compiler=no
1357 fi
1358
1359 case "$have_compiler:$host:$target:$enable_bootstrap" in
1360   *:*:*:no) ;;
1361
1362   # Default behavior.  Enable bootstrap if we have a compiler
1363   # and we are in a native configuration.
1364   yes:$build:$build:default)
1365     enable_bootstrap=yes ;;
1366
1367   *:*:*:default)
1368     enable_bootstrap=no ;;
1369
1370   # We have a compiler and we are in a native configuration, bootstrap is ok
1371   yes:$build:$build:yes)
1372     ;;
1373
1374   # Other configurations, but we have a compiler.  Assume the user knows
1375   # what he's doing.
1376   yes:*:*:yes)
1377     AC_MSG_WARN([trying to bootstrap a cross compiler])
1378     ;;
1379
1380   # No compiler: if they passed --enable-bootstrap explicitly, fail
1381   no:*:*:yes)
1382     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1383
1384   # Fail if wrong command line
1385   *)
1386     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1387     ;;
1388 esac
1389
1390 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1391 # C++98 compiler can still start the bootstrap.
1392 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1393   CXX="$CXX -std=gnu++98"
1394 fi
1395
1396 # Used for setting $lt_cv_objdir
1397 _LT_CHECK_OBJDIR
1398
1399 # Check for GMP, MPFR and MPC
1400 gmplibs="-lmpc -lmpfr -lgmp"
1401 gmpinc=
1402 have_gmp=no
1403
1404 # Specify a location for mpc
1405 # check for this first so it ends up on the link line before mpfr.
1406 AC_ARG_WITH(mpc,
1407 [AS_HELP_STRING([--with-mpc=PATH],
1408                 [specify prefix directory for installed MPC package.
1409                  Equivalent to --with-mpc-include=PATH/include
1410                  plus --with-mpc-lib=PATH/lib])])
1411 AC_ARG_WITH(mpc-include,
1412 [AS_HELP_STRING([--with-mpc-include=PATH],
1413                 [specify directory for installed MPC include files])])
1414 AC_ARG_WITH(mpc-lib,
1415 [AS_HELP_STRING([--with-mpc-lib=PATH],
1416                 [specify directory for the installed MPC library])])
1417
1418 if test "x$with_mpc" != x; then
1419   gmplibs="-L$with_mpc/lib $gmplibs"
1420   gmpinc="-I$with_mpc/include $gmpinc"
1421 fi
1422 if test "x$with_mpc_include" != x; then
1423   gmpinc="-I$with_mpc_include $gmpinc"
1424 fi
1425 if test "x$with_mpc_lib" != x; then
1426   gmplibs="-L$with_mpc_lib $gmplibs"
1427 fi
1428 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1429   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1430   gmpinc='-I$$s/mpc/src '"$gmpinc"
1431   # Do not test the mpc version.  Assume that it is sufficient, since
1432   # it is in the source tree, and the library has not been built yet
1433   # but it would be included on the link line in the version check below
1434   # hence making the test fail.
1435   have_gmp=yes
1436 fi
1437
1438 # Specify a location for mpfr
1439 # check for this first so it ends up on the link line before gmp.
1440 AC_ARG_WITH(mpfr-dir,
1441 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1442 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1443 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1444
1445 AC_ARG_WITH(mpfr,
1446 [AS_HELP_STRING([--with-mpfr=PATH],
1447                 [specify prefix directory for installed MPFR package.
1448                  Equivalent to --with-mpfr-include=PATH/include
1449                  plus --with-mpfr-lib=PATH/lib])])
1450 AC_ARG_WITH(mpfr-include,
1451 [AS_HELP_STRING([--with-mpfr-include=PATH],
1452                 [specify directory for installed MPFR include files])])
1453 AC_ARG_WITH(mpfr-lib,
1454 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1455                 [specify directory for the installed MPFR library])])
1456
1457 if test "x$with_mpfr" != x; then
1458   gmplibs="-L$with_mpfr/lib $gmplibs"
1459   gmpinc="-I$with_mpfr/include $gmpinc"
1460 fi
1461 if test "x$with_mpfr_include" != x; then
1462   gmpinc="-I$with_mpfr_include $gmpinc"
1463 fi
1464 if test "x$with_mpfr_lib" != x; then
1465   gmplibs="-L$with_mpfr_lib $gmplibs"
1466 fi
1467 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1468   # MPFR v3.1.0 moved the sources into a src sub-directory.
1469   if ! test -d ${srcdir}/mpfr/src; then
1470     AC_MSG_ERROR([dnl
1471 Building GCC with MPFR in the source tree is only handled for MPFR 3.1.0+.])
1472   fi
1473   gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1474   gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1475   extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1476   # Do not test the mpfr version.  Assume that it is sufficient, since
1477   # it is in the source tree, and the library has not been built yet
1478   # but it would be included on the link line in the version check below
1479   # hence making the test fail.
1480   have_gmp=yes
1481 fi
1482
1483 # Specify a location for gmp
1484 AC_ARG_WITH(gmp-dir,
1485 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1486 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1487 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1488
1489 AC_ARG_WITH(gmp,
1490 [AS_HELP_STRING([--with-gmp=PATH],
1491                 [specify prefix directory for the installed GMP package.
1492                  Equivalent to --with-gmp-include=PATH/include
1493                  plus --with-gmp-lib=PATH/lib])])
1494 AC_ARG_WITH(gmp-include,
1495 [AS_HELP_STRING([--with-gmp-include=PATH],
1496                 [specify directory for installed GMP include files])])
1497 AC_ARG_WITH(gmp-lib,
1498 [AS_HELP_STRING([--with-gmp-lib=PATH],
1499                 [specify directory for the installed GMP library])])
1500
1501
1502 if test "x$with_gmp" != x; then
1503   gmplibs="-L$with_gmp/lib $gmplibs"
1504   gmpinc="-I$with_gmp/include $gmpinc"
1505 fi
1506 if test "x$with_gmp_include" != x; then
1507   gmpinc="-I$with_gmp_include $gmpinc"
1508 fi
1509 if test "x$with_gmp_lib" != x; then
1510   gmplibs="-L$with_gmp_lib $gmplibs"
1511 fi
1512 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1513   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1514   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1515   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1516   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1517   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1518   # Do not test the gmp version.  Assume that it is sufficient, since
1519   # it is in the source tree, and the library has not been built yet
1520   # but it would be included on the link line in the version check below
1521   # hence making the test fail.
1522   have_gmp=yes
1523 fi
1524
1525 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1526   have_gmp=yes
1527   saved_CFLAGS="$CFLAGS"
1528   CFLAGS="$CFLAGS $gmpinc"
1529   # Check for the recommended and required versions of GMP.
1530   AC_MSG_CHECKING([for the correct version of gmp.h])
1531   AC_TRY_COMPILE([#include "gmp.h"],[
1532   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1533   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1534   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1535   choke me
1536   #endif
1537   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1538   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1539   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1540   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1541   choke me
1542   #endif
1543   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1544    [AC_MSG_RESULT([no]); have_gmp=no])
1545
1546   # If we have GMP, check the MPFR version.
1547   if test x"$have_gmp" = xyes; then
1548     # Check for the recommended and required versions of MPFR.
1549     AC_MSG_CHECKING([for the correct version of mpfr.h])
1550     AC_TRY_COMPILE([#include <gmp.h>
1551     #include <mpfr.h>],[
1552     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1553     choke me
1554     #endif
1555     ], [AC_TRY_COMPILE([#include <gmp.h>
1556     #include <mpfr.h>],[
1557     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1558     choke me
1559     #endif
1560     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1561      [AC_MSG_RESULT([no]); have_gmp=no])
1562   fi
1563
1564   # Check for the MPC header version.
1565   if test x"$have_gmp" = xyes ; then
1566     # Check for the recommended and required versions of MPC.
1567     AC_MSG_CHECKING([for the correct version of mpc.h])
1568     AC_TRY_COMPILE([#include <mpc.h>],[
1569     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1570     choke me
1571     #endif
1572     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1573     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1574     choke me
1575     #endif
1576     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1577      [AC_MSG_RESULT([no]); have_gmp=no])
1578   fi
1579
1580   # Now check the MPFR library.
1581   if test x"$have_gmp" = xyes; then
1582     saved_LIBS="$LIBS"
1583     LIBS="$LIBS $gmplibs"
1584     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1585     AC_TRY_LINK([#include <mpc.h>],[
1586     mpfr_t n;
1587     mpfr_t x;
1588     mpc_t c;
1589     int t;
1590     mpfr_init (n);
1591     mpfr_init (x);
1592     mpfr_atan2 (n, n, x, GMP_RNDN);
1593     mpfr_erfc (n, x, GMP_RNDN);
1594     mpfr_subnormalize (x, t, GMP_RNDN);
1595     mpfr_clear(n);
1596     mpfr_clear(x);
1597     mpc_init2 (c, 53);
1598     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1599     mpc_cosh (c, c, MPC_RNDNN);
1600     mpc_pow (c, c, c, MPC_RNDNN);
1601     mpc_acosh (c, c, MPC_RNDNN);
1602     mpc_clear (c);
1603     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1604     LIBS="$saved_LIBS"
1605   fi
1606
1607   CFLAGS="$saved_CFLAGS"
1608
1609 # The library versions listed in the error message below should match
1610 # the HARD-minimums enforced above.
1611   if test x$have_gmp != xyes; then
1612     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1613 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1614 their locations.  Source code for these libraries can be found at
1615 their respective hosting sites as well as at
1616 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1617 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1618 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1619 make sure that you have installed both the libraries and the header
1620 files.  They may be located in separate packages.])
1621   fi
1622 fi
1623
1624 # Flags needed for both GMP, MPFR and/or MPC.
1625 AC_SUBST(gmplibs)
1626 AC_SUBST(gmpinc)
1627 AC_SUBST(extra_mpfr_configure_flags)
1628 AC_SUBST(extra_mpc_gmp_configure_flags)
1629 AC_SUBST(extra_mpc_mpfr_configure_flags)
1630 AC_SUBST(extra_isl_gmp_configure_flags)
1631
1632 # Libraries to use for stage1 or when not bootstrapping.
1633 AC_ARG_WITH(stage1-libs,
1634 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1635 [if test "$withval" = "no" -o "$withval" = "yes"; then
1636    stage1_libs=
1637  else
1638    stage1_libs=$withval
1639  fi],
1640 [stage1_libs=])
1641 AC_SUBST(stage1_libs)
1642
1643 # Whether or not to use -static-libstdc++ and -static-libgcc.  The
1644 # default is yes if gcc is being built; no otherwise.  The reason for
1645 # this default is that gdb is sometimes linked against GNU Source
1646 # Highlight, which is a shared library that uses C++ exceptions.  In
1647 # this case, -static-libstdc++ will cause crashes.
1648 AC_ARG_WITH(static-standard-libraries,
1649 [AS_HELP_STRING([--with-static-standard-libraries],
1650                 [use -static-libstdc++ and -static-libgcc (default=auto)])],
1651 [], [with_static_standard_libraries=auto])
1652 if test "$with_static_standard_libraries" = auto; then
1653   with_static_standard_libraries=$have_compiler
1654 fi
1655
1656 # Linker flags to use for stage1 or when not bootstrapping.
1657 AC_ARG_WITH(stage1-ldflags,
1658 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1659 [if test "$withval" = "no" -o "$withval" = "yes"; then
1660    stage1_ldflags=
1661  else
1662    stage1_ldflags=$withval
1663  fi],
1664 [stage1_ldflags=
1665  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1666  # if supported.  But if the user explicitly specified the libraries to use,
1667  # trust that they are doing what they want.
1668  if test "$with_static_standard_libraries" = yes -a "$stage1_libs" = "" \
1669      -a "$have_static_libs" = yes; then
1670    stage1_ldflags="-static-libstdc++ -static-libgcc"
1671  fi])
1672 AC_SUBST(stage1_ldflags)
1673
1674 # Libraries to use for stage2 and later builds.
1675 AC_ARG_WITH(boot-libs,
1676 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1677 [if test "$withval" = "no" -o "$withval" = "yes"; then
1678    poststage1_libs=
1679  else
1680    poststage1_libs=$withval
1681  fi],
1682 [poststage1_libs=])
1683 AC_SUBST(poststage1_libs)
1684
1685 # Linker flags to use for stage2 and later builds.
1686 AC_ARG_WITH(boot-ldflags,
1687 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1688                 [linker flags for stage2 and later])],
1689 [if test "$withval" = "no" -o "$withval" = "yes"; then
1690    poststage1_ldflags=
1691  else
1692    poststage1_ldflags=$withval
1693  fi],
1694 [poststage1_ldflags=
1695  # In stages 2 and 3, default to linking libstdc++ and libgcc
1696  # statically.  But if the user explicitly specified the libraries to
1697  # use, trust that they are doing what they want.
1698  if test "$poststage1_libs" = ""; then
1699    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1700  fi])
1701 AC_SUBST(poststage1_ldflags)
1702
1703 # GCC GRAPHITE dependency isl.
1704 # Basic setup is inlined here, actual checks are in config/isl.m4
1705
1706 AC_ARG_WITH(isl,
1707   [AS_HELP_STRING(
1708    [--with-isl=PATH],
1709    [Specify prefix directory for the installed isl package.
1710     Equivalent to --with-isl-include=PATH/include
1711     plus --with-isl-lib=PATH/lib])])
1712
1713 # Treat --without-isl as a request to disable
1714 # GRAPHITE support and skip all following checks.
1715 if test "x$with_isl" != "xno"; then
1716   # Check for isl
1717   dnl Provide configure switches and initialize islinc & isllibs
1718   dnl with user input.
1719   ISL_INIT_FLAGS
1720   dnl The versions of isl that work for Graphite
1721   ISL_CHECK_VERSION()
1722   dnl Only execute fail-action, if isl has been requested.
1723   ISL_IF_FAILED([
1724     AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1725 fi
1726
1727 # If the isl check failed, disable builds of in-tree variant of isl
1728 if test "x$with_isl" = xno ||
1729    test "x$gcc_cv_isl" = xno; then
1730   noconfigdirs="$noconfigdirs isl"
1731   islinc=
1732 fi
1733
1734 AC_SUBST(isllibs)
1735 AC_SUBST(islinc)
1736
1737 # Check for LTO support.
1738 AC_ARG_ENABLE(lto,
1739 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1740 enable_lto=$enableval,
1741 enable_lto=yes; default_enable_lto=yes)
1742
1743 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1744   build_lto_plugin=yes
1745 ],[if test x"$default_enable_lto" = x"yes" ; then
1746     case $target in
1747       *-apple-darwin[[912]]* | *-cygwin* | *-mingw* | *djgpp*) ;;
1748       # On other non-ELF platforms, LTO has yet to be validated.
1749       *) enable_lto=no ;;
1750     esac
1751   else
1752   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1753   # It would also be nice to check the binutils support, but we don't
1754   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1755   # warn during gcc/ subconfigure; unless you're bootstrapping with
1756   # -flto it won't be needed until after installation anyway.
1757     case $target in
1758       *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1759       *) if test x"$enable_lto" = x"yes"; then
1760         AC_MSG_ERROR([LTO support is not enabled for this target.])
1761         fi
1762       ;;
1763     esac
1764   fi
1765   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1766   # Build it unless LTO was explicitly disabled.
1767   case $target in
1768     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1769     *) ;;
1770   esac
1771 ])
1772
1773 AC_ARG_ENABLE(linker-plugin-configure-flags,
1774   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1775     [additional flags for configuring linker plugins @<:@none@:>@])],
1776   extra_linker_plugin_configure_flags=$enableval,
1777   extra_linker_plugin_configure_flags=)
1778 AC_SUBST(extra_linker_plugin_configure_flags)
1779 AC_ARG_ENABLE(linker-plugin-flags,
1780   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1781     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1782   extra_linker_plugin_flags=$enableval,
1783   extra_linker_plugin_flags=)
1784 AC_SUBST(extra_linker_plugin_flags)
1785
1786 # Enable --enable-host-shared.
1787 # Checked early to determine whether jit is an 'all' language
1788 AC_ARG_ENABLE(host-shared,
1789 [AS_HELP_STRING([--enable-host-shared],
1790                 [build host code as shared libraries])],
1791 [host_shared=$enableval], [host_shared=no])
1792 AC_SUBST(host_shared)
1793
1794 # By default, C and C++ are the only stage 1 languages.
1795 stage1_languages=,c,
1796
1797 # Target libraries that we bootstrap.
1798 bootstrap_target_libs=,target-libgcc,
1799
1800 # Figure out what language subdirectories are present.
1801 # Look if the user specified --enable-languages="..."; if not, use
1802 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1803 # go away some day.
1804 # NB:  embedded tabs in this IF block -- do not untabify
1805 if test -d ${srcdir}/gcc; then
1806   if test x"${enable_languages+set}" != xset; then
1807     if test x"${LANGUAGES+set}" = xset; then
1808       enable_languages="${LANGUAGES}"
1809         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1810     else
1811       enable_languages=default
1812     fi
1813   else
1814     if test x"${enable_languages}" = x ||
1815        test x"${enable_languages}" = xyes;
1816        then
1817       echo configure.ac: --enable-languages needs at least one language argument 1>&2
1818       exit 1
1819     fi
1820   fi
1821   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1822
1823   # 'f95' is the old name for the 'fortran' language. We issue a warning
1824   # and make the substitution.
1825   case ,${enable_languages}, in
1826     *,f95,*)
1827       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1828       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1829       ;;
1830   esac
1831
1832   # If bootstrapping, C++ must be enabled.
1833   case ",$enable_languages,:$enable_bootstrap" in
1834     *,c++,*:*) ;;
1835     *:yes)
1836       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1837         enable_languages="${enable_languages},c++"
1838       else
1839         AC_MSG_ERROR([bootstrapping requires c++ sources])
1840       fi
1841       ;;
1842   esac
1843
1844   # First scan to see if an enabled language requires some other language.
1845   # We assume that a given config-lang.in will list all the language
1846   # front ends it requires, even if some are required indirectly.
1847   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1848     case ${lang_frag} in
1849       ..) ;;
1850       # The odd quoting in the next line works around
1851       # an apparent bug in bash 1.12 on linux.
1852       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1853       *)
1854         # From the config-lang.in, get $language, $lang_requires, and
1855         # $lang_requires_boot_languages.
1856         language=
1857         lang_requires=
1858         lang_requires_boot_languages=
1859         # set srcdir during sourcing lang_frag to the gcc dir.
1860         # Sadly overriding srcdir on the . line doesn't work in plain sh as it
1861         # polutes this shell
1862         saved_srcdir=${srcdir}
1863         srcdir=${srcdir}/gcc . ${lang_frag}
1864         srcdir=${saved_srcdir}
1865         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1866           case ,${enable_languages}, in
1867             *,$other,*) ;;
1868             *,default,*) ;;
1869             *,all,*) ;;
1870             *,$language,*)
1871               echo " \`$other' language required by \`$language'; enabling" 1>&2
1872               enable_languages="${enable_languages},${other}"
1873               ;;
1874           esac
1875         done
1876         for other in ${lang_requires_boot_languages} ; do
1877           if test "$other" != "c"; then
1878             case ,${enable_stage1_languages}, in
1879               *,$other,*) ;;
1880               *,default,*) ;;
1881               *,all,*) ;;
1882               *)
1883                 case ,${enable_languages}, in
1884                   *,$language,*)
1885                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1886                     enable_stage1_languages="$enable_stage1_languages,${other}"
1887                     ;;
1888                 esac
1889                 ;;
1890             esac
1891           fi
1892         done
1893         ;;
1894     esac
1895   done
1896
1897   new_enable_languages=,c,
1898
1899   # If LTO is enabled, add the LTO front end.
1900   if test "$enable_lto" = "yes" ; then
1901     case ,${enable_languages}, in
1902       *,lto,*) ;;
1903       *) enable_languages="${enable_languages},lto" ;;
1904     esac
1905     if test "${build_lto_plugin}" = "yes" ; then
1906       configdirs="$configdirs lto-plugin"
1907     fi
1908   fi
1909
1910   # If we're building an offloading compiler, add the LTO front end.
1911   if test x"$enable_as_accelerator_for" != x ; then
1912     case ,${enable_languages}, in
1913       *,lto,*) ;;
1914       *) enable_languages="${enable_languages},lto" ;;
1915     esac
1916   fi
1917
1918   missing_languages=`echo ",$enable_languages," | sed -e s/,default,/,/ -e s/,all,/,/ -e s/,c,/,/ `
1919   potential_languages=,c,
1920
1921   enabled_target_libs=
1922   disabled_target_libs=
1923
1924   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1925     case ${lang_frag} in
1926       ..) ;;
1927       # The odd quoting in the next line works around
1928       # an apparent bug in bash 1.12 on linux.
1929       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1930       *)
1931         # From the config-lang.in, get $language, $target_libs,
1932         # $lang_dirs, $boot_language, and $build_by_default
1933         language=
1934         target_libs=
1935         lang_dirs=
1936         subdir_requires=
1937         boot_language=no
1938         build_by_default=yes
1939         # set srcdir during sourcing.  See above about save & restore
1940         saved_srcdir=${srcdir}
1941         srcdir=${srcdir}/gcc . ${lang_frag}
1942         srcdir=${saved_srcdir}
1943         if test x${language} = x; then
1944           echo "${lang_frag} doesn't set \$language." 1>&2
1945           exit 1
1946         fi
1947
1948         if test "$language" = "c++"; then
1949           boot_language=yes
1950         fi
1951
1952         add_this_lang=no
1953         # C is always enabled, so no need to add it again
1954         if test "$language" != "c"; then
1955           case ,${enable_languages}, in
1956             *,${language},*)
1957               # Language was explicitly selected; include it
1958               add_this_lang=yes
1959               ;;
1960             *,all,*)
1961               # All languages are enabled
1962               add_this_lang=all
1963               ;;
1964             *,default,*)
1965               # 'default' was selected, select it if it is a default language
1966               add_this_lang=${build_by_default}
1967               ;;
1968           esac
1969         fi
1970
1971         # Disable languages that need other directories if these aren't available.
1972         for i in $subdir_requires; do
1973           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1974           case ${add_this_lang} in
1975             yes)
1976               # Specifically requested language; tell them.
1977               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1978               ;;
1979             all)
1980               AC_MSG_WARN([The gcc/$i directory contains parts of $language but is missing])
1981               add_this_lang=unsupported
1982               ;;
1983             *)
1984               # Silently disable.
1985               add_this_lang=unsupported
1986               ;;
1987           esac
1988         done
1989
1990         # Disable Ada if no preexisting GNAT is available.
1991         case ${add_this_lang}:${language}:${have_gnat} in
1992           yes:ada:no)
1993             # Specifically requested language; tell them.
1994             AC_MSG_ERROR([GNAT is required to build $language])
1995             ;;
1996           all:ada:no)
1997             AC_MSG_WARN([GNAT is required to build $language])
1998             add_this_lang=unsupported
1999             ;;
2000           *:ada:no)
2001             # Silently disable.
2002             add_this_lang=unsupported
2003             ;;
2004         esac
2005
2006         # Disable jit if -enable-host-shared not specified
2007         case ${add_this_lang}:${language}:${host_shared} in
2008           yes:jit:no)
2009             # PR jit/64780: explicitly specify --enable-host-shared
2010             AC_MSG_ERROR([
2011 Enabling language "jit" requires --enable-host-shared.
2012
2013 --enable-host-shared typically slows the rest of the compiler down by
2014 a few %, so you must explicitly enable it.
2015
2016 If you want to build both the jit and the regular compiler, it is often
2017 best to do this via two separate configure/builds, in separate
2018 directories, to avoid imposing the performance cost of
2019 --enable-host-shared on the regular compiler.])
2020             ;;
2021           all:jit:no)
2022             AC_MSG_WARN([--enable-host-shared required to build $language])
2023             add_this_lang=unsupported
2024             ;;
2025           *:jit:no)
2026             # Silently disable.
2027             add_this_lang=unsupported
2028             ;;
2029         esac
2030
2031         # Disable a language that is unsupported by the target.
2032         case "${add_this_lang}: $unsupported_languages " in
2033           no:*) ;;
2034           unsupported:*) ;;
2035           *:*" $language "*)
2036             AC_MSG_WARN([${language} not supported for this target])
2037             add_this_lang=unsupported
2038             ;;
2039         esac
2040
2041         case $add_this_lang in
2042           unsupported)
2043             # Remove language-dependent dirs.
2044             disabled_target_libs="$disabled_target_libs $target_libs"
2045             noconfigdirs="$noconfigdirs $lang_dirs"
2046             ;;
2047           no)
2048             # Remove language-dependent dirs; still show language as supported.
2049             disabled_target_libs="$disabled_target_libs $target_libs"
2050             noconfigdirs="$noconfigdirs $lang_dirs"
2051             potential_languages="${potential_languages}${language},"
2052             ;;
2053           all|yes)
2054             new_enable_languages="${new_enable_languages}${language},"
2055             potential_languages="${potential_languages}${language},"
2056             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2057             enabled_target_libs="$enabled_target_libs $target_libs"
2058             case "${boot_language}:,$enable_stage1_languages," in
2059               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2060                 # Add to (comma-separated) list of stage 1 languages.
2061                 case ",$stage1_languages," in
2062                   *,$language,* | ,yes, | ,all,) ;;
2063                   *) stage1_languages="${stage1_languages}${language}," ;;
2064                 esac
2065                 # We need to bootstrap any supporting libraries.
2066                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2067                 ;;
2068             esac
2069             ;;
2070         esac
2071         ;;
2072     esac
2073   done
2074
2075   # Add target libraries which are only needed for disabled languages
2076   # to noconfigdirs.
2077   if test -n "$disabled_target_libs"; then
2078     for dir in $disabled_target_libs; do
2079       case " $enabled_target_libs " in
2080       *" ${dir} "*) ;;
2081       *) noconfigdirs="$noconfigdirs $dir" ;;
2082       esac
2083     done
2084   fi
2085
2086   AC_ARG_ENABLE(stage1-languages,
2087   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2088                   [choose additional languages to build during
2089                   stage1.  Mostly useful for compiler development])],
2090   [case ,${enable_stage1_languages}, in
2091     ,no,|,,)
2092       # Set it to something that will have no effect in the loop below
2093       enable_stage1_languages=c ;;
2094     ,yes,)
2095       enable_stage1_languages=`echo $new_enable_languages | \
2096         sed -e "s/^,//" -e "s/,$//" ` ;;
2097     *,all,*)
2098       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2099         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2100   esac
2101
2102   # Add "good" languages from enable_stage1_languages to stage1_languages,
2103   # while "bad" languages go in missing_languages.  Leave no duplicates.
2104   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2105     case $potential_languages in
2106       *,$i,*)
2107         case $stage1_languages in
2108           *,$i,*) ;;
2109           *) stage1_languages="$stage1_languages$i," ;;
2110         esac ;;
2111       *)
2112         case $missing_languages in
2113           *,$i,*) ;;
2114           *) missing_languages="$missing_languages$i," ;;
2115         esac ;;
2116      esac
2117   done])
2118
2119   # Remove leading/trailing commas that were added for simplicity
2120   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2121   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2122   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2123   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2124
2125   if test "x$missing_languages" != x; then
2126     AC_MSG_ERROR([
2127 The following requested languages could not be built: ${missing_languages}
2128 Supported languages are: ${potential_languages}])
2129   fi
2130   if test "x$new_enable_languages" != "x$enable_languages"; then
2131     echo The following languages will be built: ${new_enable_languages}
2132     enable_languages="$new_enable_languages"
2133   fi
2134
2135   AC_SUBST(stage1_languages)
2136   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2137 fi
2138
2139 # Handle --disable-<component> generically.
2140 for dir in $configdirs $build_configdirs $target_configdirs ; do
2141   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2142   varname=`echo $dirname | sed -e s/+/_/g`
2143   if eval test x\${enable_${varname}} "=" xno ; then
2144     noconfigdirs="$noconfigdirs $dir"
2145   fi
2146 done
2147
2148 # Check for Boehm's garbage collector
2149 AC_ARG_ENABLE(objc-gc,
2150 [AS_HELP_STRING([--enable-objc-gc],
2151                 [enable use of Boehm's garbage collector with the
2152                  GNU Objective-C runtime])])
2153 AC_ARG_WITH([target-bdw-gc],
2154 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
2155                 [specify prefix directory for installed bdw-gc package.
2156                  Equivalent to --with-target-bdw-gc-include=PATH/include
2157                  plus --with-target-bdw-gc-lib=PATH/lib])])
2158 AC_ARG_WITH([target-bdw-gc-include],
2159 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
2160                 [specify directories for installed bdw-gc include files])])
2161 AC_ARG_WITH([target-bdw-gc-lib],
2162 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
2163                 [specify directories for installed bdw-gc library])])
2164
2165 case ,${enable_languages},:${enable_objc_gc} in *,objc,*:yes|*,objc,*:auto)
2166   AC_MSG_CHECKING([for bdw garbage collector])
2167   if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
2168     dnl no bdw-gw options, assume default locations
2169     AC_MSG_RESULT([using bdw-gc in default locations])
2170   else
2171     dnl bdw-gw options, first error checking, complete checking in libobjc
2172     if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
2173       AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
2174     elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
2175       AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
2176     else
2177       AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
2178     fi
2179   fi
2180 esac
2181
2182 # Disable libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2183 case ,${enable_languages}, in
2184   *,c++,*)
2185     # Disable libitm, libsanitizer if we're not building libstdc++
2186     case "${noconfigdirs}" in
2187       *target-libstdc++-v3*)
2188         noconfigdirs="$noconfigdirs target-libitm target-libsanitizer"
2189         ;;
2190       *) ;;
2191     esac
2192     ;;
2193   *)
2194     noconfigdirs="$noconfigdirs target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2195     ;;
2196 esac
2197
2198 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2199 # $build_configdirs and $target_configdirs.
2200 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2201
2202 notsupp=""
2203 for dir in . $skipdirs $noconfigdirs ; do
2204   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2205   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2206     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2207     if test -r $srcdir/$dirname/configure ; then
2208       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2209         true
2210       else
2211         notsupp="$notsupp $dir"
2212       fi
2213     fi
2214   fi
2215   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2216     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2217     if test -r $srcdir/$dirname/configure ; then
2218       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2219         true
2220       else
2221         notsupp="$notsupp $dir"
2222       fi
2223     fi
2224   fi
2225   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2226     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2227     if test -r $srcdir/$dirname/configure ; then
2228       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2229         true
2230       else
2231         notsupp="$notsupp $dir"
2232       fi
2233     fi
2234   fi
2235 done
2236
2237 # Quietly strip out all directories which aren't configurable in this tree.
2238 # This relies on all configurable subdirectories being autoconfiscated, which
2239 # is now the case.
2240 build_configdirs_all="$build_configdirs"
2241 build_configdirs=
2242 for i in ${build_configdirs_all} ; do
2243   j=`echo $i | sed -e s/build-//g`
2244   if test -f ${srcdir}/$j/configure ; then
2245     build_configdirs="${build_configdirs} $i"
2246   fi
2247 done
2248
2249 configdirs_all="$configdirs"
2250 configdirs=
2251 for i in ${configdirs_all} ; do
2252   if test -f ${srcdir}/$i/configure ; then
2253     configdirs="${configdirs} $i"
2254   fi
2255 done
2256
2257 target_configdirs_all="$target_configdirs"
2258 target_configdirs=
2259 for i in ${target_configdirs_all} ; do
2260   j=`echo $i | sed -e s/target-//g`
2261   if test -f ${srcdir}/$j/configure ; then
2262     target_configdirs="${target_configdirs} $i"
2263   fi
2264 done
2265
2266 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2267 # so we have to add it after the preceding checks.
2268 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2269 then
2270   case " $configdirs " in
2271     *" libiberty "*)
2272       # If we can build libiberty, we can also build libiberty-linker-plugin.
2273       configdirs="$configdirs libiberty-linker-plugin"
2274       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2275         --with-libiberty=../libiberty-linker-plugin";;
2276     *)
2277       AC_MSG_ERROR([libiberty missing]);;
2278   esac
2279 fi
2280
2281 # Sometimes we have special requirements for the host libiberty.
2282 extra_host_libiberty_configure_flags=
2283 extra_host_zlib_configure_flags=
2284 case " $configdirs " in
2285   *" lto-plugin "* | *" libcc1 "*)
2286     # When these are to be built as shared libraries, the same applies to
2287     # libiberty.
2288     extra_host_libiberty_configure_flags=--enable-shared
2289     ;;
2290   *" bfd "*)
2291     # When bfd is to be built as a shared library, the same applies to
2292     # zlib.
2293     if test "$enable_shared" = "yes"; then
2294       extra_host_zlib_configure_flags=--enable-host-shared
2295     fi
2296     ;;
2297 esac
2298 AC_SUBST(extra_host_libiberty_configure_flags)
2299 AC_SUBST(extra_host_zlib_configure_flags)
2300
2301 # Produce a warning message for the subdirs we can't configure.
2302 # This isn't especially interesting in the Cygnus tree, but in the individual
2303 # FSF releases, it's important to let people know when their machine isn't
2304 # supported by the one or two programs in a package.
2305
2306 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2307   # If $appdirs is non-empty, at least one of those directories must still
2308   # be configured, or we error out.  (E.g., if the gas release supports a
2309   # specified target in some subdirs but not the gas subdir, we shouldn't
2310   # pretend that all is well.)
2311   if test -n "$appdirs" ; then
2312     for dir in $appdirs ; do
2313       if test -r $dir/Makefile.in ; then
2314         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2315           appdirs=""
2316           break
2317         fi
2318         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2319           appdirs=""
2320           break
2321         fi
2322       fi
2323     done
2324     if test -n "$appdirs" ; then
2325       echo "*** This configuration is not supported by this package." 1>&2
2326       exit 1
2327     fi
2328   fi
2329   # Okay, some application will build, or we don't care to check.  Still
2330   # notify of subdirs not getting built.
2331   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2332   echo "    ${notsupp}" 1>&2
2333   echo "    (Any other directories should still work fine.)" 1>&2
2334 fi
2335
2336 case "$host" in
2337   *msdosdjgpp*)
2338     enable_gdbtk=no ;;
2339 esac
2340
2341 # To find our prefix, in gcc_cv_tool_prefix.
2342 ACX_TOOL_DIRS
2343
2344 copy_dirs=
2345
2346 AC_ARG_WITH([build-sysroot],
2347   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2348                   [use sysroot as the system root during the build])],
2349   [if test x"$withval" != x ; then
2350      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2351    fi],
2352   [SYSROOT_CFLAGS_FOR_TARGET=])
2353 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2354
2355 AC_ARG_WITH([debug-prefix-map],
2356   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2357                   [map A to B, C to D ... in debug information])],
2358   [if test x"$withval" != x; then
2359      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2360      for debug_map in $withval; do
2361        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2362      done
2363    fi],
2364   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2365 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2366
2367 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2368 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2369 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2370 # We want to ensure that TARGET libraries (which we know are built with
2371 # gcc) are built with "-O2 -g", so include those options when setting
2372 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2373 if test "x$CFLAGS_FOR_TARGET" = x; then
2374   if test "x${is_cross_compiler}" = xyes; then
2375     CFLAGS_FOR_TARGET="-g -O2"
2376   else
2377     CFLAGS_FOR_TARGET=$CFLAGS
2378     case " $CFLAGS " in
2379       *" -O2 "*) ;;
2380       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2381     esac
2382     case " $CFLAGS " in
2383       *" -g "* | *" -g3 "*) ;;
2384       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2385     esac
2386   fi
2387 fi
2388 AC_SUBST(CFLAGS_FOR_TARGET)
2389
2390 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2391   if test "x${is_cross_compiler}" = xyes; then
2392     CXXFLAGS_FOR_TARGET="-g -O2"
2393   else
2394     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2395     case " $CXXFLAGS " in
2396       *" -O2 "*) ;;
2397       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2398     esac
2399     case " $CXXFLAGS " in
2400       *" -g "* | *" -g3 "*) ;;
2401       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2402     esac
2403   fi
2404 fi
2405 AC_SUBST(CXXFLAGS_FOR_TARGET)
2406
2407 AC_SUBST(LDFLAGS_FOR_TARGET)
2408
2409 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2410 # the named directory are copied to $(tooldir)/sys-include.
2411 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2412   if test x${is_cross_compiler} = xno ; then
2413     echo 1>&2 '***' --with-headers is only supported when cross compiling
2414     exit 1
2415   fi
2416   if test x"${with_headers}" != xyes ; then
2417     x=${gcc_cv_tool_prefix}
2418     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2419   fi
2420 fi
2421
2422 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2423 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2424 # are permitted.
2425 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2426   if test x${is_cross_compiler} = xno ; then
2427     echo 1>&2 '***' --with-libs is only supported when cross compiling
2428     exit 1
2429   fi
2430   if test x"${with_libs}" != xyes ; then
2431     # Copy the libraries in reverse order, so that files in the first named
2432     # library override files in subsequent libraries.
2433     x=${gcc_cv_tool_prefix}
2434     for l in ${with_libs}; do
2435       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2436     done
2437   fi
2438 fi
2439
2440 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2441 #
2442 # This is done by determining whether or not the appropriate directory
2443 # is available, and by checking whether or not specific configurations
2444 # have requested that this magic not happen.
2445 #
2446 # The command line options always override the explicit settings in
2447 # configure.ac, and the settings in configure.ac override this magic.
2448 #
2449 # If the default for a toolchain is to use GNU as and ld, and you don't
2450 # want to do that, then you should use the --without-gnu-as and
2451 # --without-gnu-ld options for the configure script.  Similarly, if
2452 # the default is to use the included zlib and you don't want to do that,
2453 # you should use the --with-system-zlib option for the configure script.
2454
2455 if test x${use_gnu_as} = x &&
2456    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2457   with_gnu_as=yes
2458   extra_host_args="$extra_host_args --with-gnu-as"
2459 fi
2460
2461 if test x${use_gnu_ld} = x &&
2462    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2463   with_gnu_ld=yes
2464   extra_host_args="$extra_host_args --with-gnu-ld"
2465 fi
2466
2467 if test x${use_included_zlib} = x &&
2468    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2469   :
2470 else
2471   with_system_zlib=yes
2472   extra_host_args="$extra_host_args --with-system-zlib"
2473 fi
2474
2475 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2476 # can detect this case.
2477
2478 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2479   with_newlib=yes
2480   extra_host_args="$extra_host_args --with-newlib"
2481 fi
2482
2483 # Handle ${copy_dirs}
2484 set fnord ${copy_dirs}
2485 shift
2486 while test $# != 0 ; do
2487   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2488     :
2489   else
2490     echo Copying $1 to $2
2491
2492     # Use the install script to create the directory and all required
2493     # parent directories.
2494     if test -d $2 ; then
2495       :
2496     else
2497       echo >config.temp
2498       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2499     fi
2500
2501     # Copy the directory, assuming we have tar.
2502     # FIXME: Should we use B in the second tar?  Not all systems support it.
2503     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2504
2505     # It is the responsibility of the user to correctly adjust all
2506     # symlinks.  If somebody can figure out how to handle them correctly
2507     # here, feel free to add the code.
2508
2509     echo $1 > $2/COPIED
2510   fi
2511   shift; shift
2512 done
2513
2514 # Determine a target-dependent exec_prefix that the installed
2515 # gcc will search in.  Keep this list sorted by triplet, with
2516 # the *-*-osname triplets last.
2517 md_exec_prefix=
2518 case "${target}" in
2519   i[[34567]]86-pc-msdosdjgpp*)
2520     md_exec_prefix=/dev/env/DJDIR/bin
2521     ;;
2522   *-*-hpux* | \
2523   *-*-nto-qnx* | \
2524   *-*-solaris2*)
2525     md_exec_prefix=/usr/ccs/bin
2526     ;;
2527 esac
2528
2529 extra_arflags_for_target=
2530 extra_nmflags_for_target=
2531 extra_ranlibflags_for_target=
2532 target_makefile_frag=/dev/null
2533 case "${target}" in
2534   spu-*-*)
2535     target_makefile_frag="config/mt-spu"
2536     ;;
2537   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2538     target_makefile_frag="config/mt-sde"
2539     ;;
2540   mipsisa*-*-elfoabi*)
2541     target_makefile_frag="config/mt-mips-elfoabi"
2542     ;;
2543   mips*-*-*linux* | mips*-*-gnu*)
2544     target_makefile_frag="config/mt-mips-gnu"
2545     ;;
2546   nios2-*-elf*)
2547     target_makefile_frag="config/mt-nios2-elf"
2548     ;;
2549   *-*-linux-android*)
2550     target_makefile_frag="config/mt-android"
2551     ;;
2552   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2553     target_makefile_frag="config/mt-gnu"
2554     ;;
2555   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2556     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2557     # commands to handle both 32-bit and 64-bit objects.  These flags are
2558     # harmless if we're using GNU nm or ar.
2559     extra_arflags_for_target=" -X32_64"
2560     extra_nmflags_for_target=" -B -X32_64"
2561     ;;
2562 esac
2563
2564 alphaieee_frag=/dev/null
2565 case $target in
2566   alpha*-*-*)
2567     # This just makes sure to use the -mieee option to build target libs.
2568     # This should probably be set individually by each library.
2569     alphaieee_frag="config/mt-alphaieee"
2570     ;;
2571 esac
2572
2573 # If --enable-target-optspace always use -Os instead of -O2 to build
2574 # the target libraries, similarly if it is not specified, use -Os
2575 # on selected platforms.
2576 ospace_frag=/dev/null
2577 case "${enable_target_optspace}:${target}" in
2578   yes:*)
2579     ospace_frag="config/mt-ospace"
2580     ;;
2581   :d30v-*)
2582     ospace_frag="config/mt-d30v"
2583     ;;
2584   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2585     ospace_frag="config/mt-ospace"
2586     ;;
2587   no:* | :*)
2588     ;;
2589   *)
2590     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2591     ;;
2592 esac
2593
2594 # Some systems (e.g., one of the i386-aix systems the gas testers are
2595 # using) don't handle "\$" correctly, so don't use it here.
2596 tooldir='${exec_prefix}'/${target_noncanonical}
2597 build_tooldir=${tooldir}
2598
2599 # Create a .gdbinit file which runs the one in srcdir
2600 # and tells GDB to look there for source files.
2601
2602 if test -r ${srcdir}/.gdbinit ; then
2603   case ${srcdir} in
2604     .) ;;
2605     *) cat > ./.gdbinit <<EOF
2606 # ${NO_EDIT}
2607 dir ${srcdir}
2608 dir .
2609 source ${srcdir}/.gdbinit
2610 EOF
2611     ;;
2612   esac
2613 fi
2614
2615 # Make sure that the compiler is able to generate an executable.  If it
2616 # can't, we are probably in trouble.  We don't care whether we can run the
2617 # executable--we might be using a cross compiler--we only care whether it
2618 # can be created.  At this point the main configure script has set CC.
2619 we_are_ok=no
2620 echo "int main () { return 0; }" > conftest.c
2621 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2622 if test $? = 0 ; then
2623   if test -s conftest || test -s conftest.exe ; then
2624     we_are_ok=yes
2625   fi
2626 fi
2627 case $we_are_ok in
2628   no)
2629     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2630     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2631     rm -f conftest*
2632     exit 1
2633     ;;
2634 esac
2635 rm -f conftest*
2636
2637 # Decide which environment variable is used to find dynamic libraries.
2638 case "${host}" in
2639   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2640   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2641   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2642   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2643 esac
2644
2645 # On systems where the dynamic library environment variable is PATH,
2646 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2647 # built executables to PATH.
2648 if test "$RPATH_ENVVAR" = PATH; then
2649   GCC_SHLIB_SUBDIR=/shlib
2650 else
2651   GCC_SHLIB_SUBDIR=
2652 fi
2653
2654 # Adjust the toplevel makefile according to whether bootstrap was selected.
2655 case $enable_bootstrap in
2656   yes)
2657     bootstrap_suffix=bootstrap
2658     BUILD_CONFIG=bootstrap-debug
2659     ;;
2660   no)
2661     bootstrap_suffix=no-bootstrap
2662     BUILD_CONFIG=
2663     ;;
2664 esac
2665
2666 AC_MSG_CHECKING(for default BUILD_CONFIG)
2667
2668 AC_ARG_WITH([build-config],
2669   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2670                   [use config/NAME.mk build configuration])],
2671   [case $with_build_config in
2672    yes) with_build_config= ;;
2673    no) with_build_config= BUILD_CONFIG= ;;
2674    esac])
2675
2676 if test "x${with_build_config}" != x; then
2677   BUILD_CONFIG=$with_build_config
2678 else
2679   case $BUILD_CONFIG in
2680   bootstrap-debug)
2681     if echo "int f (void) { return 0; }" > conftest.c &&
2682        ${CC} -c conftest.c &&
2683        mv conftest.o conftest.o.g0 &&
2684        ${CC} -c -g conftest.c &&
2685        mv conftest.o conftest.o.g &&
2686        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2687       :
2688     else
2689       BUILD_CONFIG=
2690     fi
2691     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2692     ;;
2693   esac
2694 fi
2695 AC_MSG_RESULT($BUILD_CONFIG)
2696 AC_SUBST(BUILD_CONFIG)
2697
2698 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2699 AC_MSG_CHECKING([for --enable-vtable-verify])
2700 AC_ARG_ENABLE(vtable-verify,
2701 [AS_HELP_STRING([--enable-vtable-verify],
2702                 [Enable vtable verification feature])],
2703 [case "$enableval" in
2704  yes) enable_vtable_verify=yes ;;
2705  no)  enable_vtable_verify=no ;;
2706  *)   enable_vtable_verify=no;;
2707  esac],
2708 [enable_vtable_verify=no])
2709 AC_MSG_RESULT($enable_vtable_verify)
2710
2711 # Record target_configdirs and the configure arguments for target and
2712 # build configuration in Makefile.
2713 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2714 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2715 bootstrap_fixincludes=no
2716
2717 # If we are building libgomp, bootstrap it.
2718 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2719   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2720 fi
2721
2722 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2723 # or bootstrap-ubsan, bootstrap it.
2724 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2725   case "$BUILD_CONFIG" in
2726     *bootstrap-asan* | *bootstrap-ubsan* )
2727       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2728       bootstrap_fixincludes=yes
2729       ;;
2730   esac
2731 fi
2732
2733 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2734 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2735    test "$enable_vtable_verify" != no; then
2736   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2737 fi
2738
2739 # Determine whether gdb needs tk/tcl or not.
2740 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2741 # and in that case we want gdb to be built without tk.  Ugh!
2742 # In fact I believe gdb is the *only* package directly dependent on tk,
2743 # so we should be able to put the 'maybe's in unconditionally and
2744 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2745 # 100% sure that that's safe though.
2746
2747 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2748 case "$enable_gdbtk" in
2749   no)
2750     GDB_TK="" ;;
2751   yes)
2752     GDB_TK="${gdb_tk}" ;;
2753   *)
2754     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2755     # distro.  Eventually someone will fix this and move Insight, nee
2756     # gdbtk to a separate directory.
2757     if test -d ${srcdir}/gdb/gdbtk ; then
2758       GDB_TK="${gdb_tk}"
2759     else
2760       GDB_TK=""
2761     fi
2762     ;;
2763 esac
2764 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2765 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2766
2767 # gdb depends on gnulib, but as nothing else does, only include it if
2768 # gdb is built.
2769 if echo " ${configdirs} " | grep " gdb " > /dev/null 2>&1 ; then
2770   # The Makefile provides the ordering, so it's enough here to add
2771   # gnulib to the list.
2772   configdirs="${configdirs} gnulib"
2773 fi
2774
2775 # Strip out unwanted targets.
2776
2777 # While at that, we remove Makefiles if we were started for recursive
2778 # configuration, so that the top-level Makefile reconfigures them,
2779 # like we used to do when configure itself was recursive.
2780
2781 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2782 # but now we're fixing up the Makefile ourselves with the additional
2783 # commands passed to AC_CONFIG_FILES.  Use separate variables
2784 # extrasub-{build,host,target} not because there is any reason to split
2785 # the substitutions up that way, but only to remain below the limit of
2786 # 99 commands in a script, for HP-UX sed.
2787
2788 # Do not nest @if/@endif or @unless/@endunless pairs, because
2789 # configure will not warn you at all.
2790
2791 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2792   yes:yes:*\ gold\ *:*,c++,*) ;;
2793   yes:yes:*\ gold\ *:*)
2794     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2795     ;;
2796 esac
2797
2798 extrasub_build=
2799 for module in ${build_configdirs} ; do
2800   if test -z "${no_recursion}" \
2801      && test -f ${build_subdir}/${module}/Makefile; then
2802     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2803     rm -f ${build_subdir}/${module}/Makefile
2804   fi
2805   extrasub_build="$extrasub_build
2806 /^@if build-$module\$/d
2807 /^@endif build-$module\$/d
2808 /^@unless build-$module\$/,/^@endunless build-$module\$/d
2809 /^@if build-$module-$bootstrap_suffix\$/d
2810 /^@endif build-$module-$bootstrap_suffix\$/d
2811 /^@unless build-$module-$bootstrap_suffix\$/,/^@endunless build-$module-$bootstrap_suffix\$/d"
2812 done
2813 extrasub_host=
2814 for module in ${configdirs} ; do
2815   if test -z "${no_recursion}"; then
2816     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2817       if test -f ${file}; then
2818         echo 1>&2 "*** removing ${file} to force reconfigure"
2819         rm -f ${file}
2820       fi
2821     done
2822   fi
2823   case ${module},${bootstrap_fixincludes} in
2824     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2825     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2826   esac
2827   extrasub_host="$extrasub_host
2828 /^@if $module\$/d
2829 /^@endif $module\$/d
2830 /^@unless $module\$/,/^@endunless $module\$/d
2831 /^@if $module-$host_bootstrap_suffix\$/d
2832 /^@endif $module-$host_bootstrap_suffix\$/d
2833 /^@unless $module-$host_bootstrap_suffix\$/,/^@endunless $module-$host_bootstrap_suffix\$/d"
2834 done
2835 extrasub_target=
2836 for module in ${target_configdirs} ; do
2837   if test -z "${no_recursion}" \
2838      && test -f ${target_subdir}/${module}/Makefile; then
2839     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2840     rm -f ${target_subdir}/${module}/Makefile
2841   fi
2842
2843   # We only bootstrap target libraries listed in bootstrap_target_libs.
2844   case $bootstrap_target_libs in
2845     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2846     *) target_bootstrap_suffix=no-bootstrap ;;
2847   esac
2848
2849   extrasub_target="$extrasub_target
2850 /^@if target-$module\$/d
2851 /^@endif target-$module\$/d
2852 /^@unless target-$module\$/,/^@endunless target-$module\$/d
2853 /^@if target-$module-$target_bootstrap_suffix\$/d
2854 /^@endif target-$module-$target_bootstrap_suffix\$/d
2855 /^@unless target-$module-$target_bootstrap_suffix\$/,/^@endunless target-$module-$target_bootstrap_suffix\$/d"
2856 done
2857
2858 # Do the final fixup along with target modules.
2859 extrasub_target="$extrasub_target
2860 /^@if /,/^@endif /d
2861 /^@unless /d
2862 /^@endunless /d"
2863
2864 # Create the serialization dependencies.  This uses a temporary file.
2865
2866 AC_ARG_ENABLE([serial-configure],
2867 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2868                 [force sequential configuration of
2869                  sub-packages for the host, target or build
2870                  machine, or all sub-packages])])
2871
2872 case ${enable_serial_configure} in
2873   yes)
2874     enable_serial_build_configure=yes
2875     enable_serial_host_configure=yes
2876     enable_serial_target_configure=yes
2877     ;;
2878 esac
2879
2880 # These force 'configure's to be done one at a time, to avoid problems
2881 # with contention over a shared config.cache.
2882 rm -f serdep.tmp
2883 echo '# serdep.tmp' > serdep.tmp
2884 olditem=
2885 test "x${enable_serial_build_configure}" = xyes &&
2886 for item in ${build_configdirs} ; do
2887   case ${olditem} in
2888     "") ;;
2889     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2890   esac
2891   olditem=${item}
2892 done
2893 olditem=
2894 test "x${enable_serial_host_configure}" = xyes &&
2895 for item in ${configdirs} ; do
2896   case ${olditem} in
2897     "") ;;
2898     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2899   esac
2900   olditem=${item}
2901 done
2902 olditem=
2903 test "x${enable_serial_target_configure}" = xyes &&
2904 for item in ${target_configdirs} ; do
2905   case ${olditem} in
2906     "") ;;
2907     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2908   esac
2909   olditem=${item}
2910 done
2911 serialization_dependencies=serdep.tmp
2912 AC_SUBST_FILE(serialization_dependencies)
2913
2914 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2915 # target, nonopt, and variable assignments.  These are the ones we
2916 # might not want to pass down to subconfigures.  The exception being
2917 # --cache-file=/dev/null, which is used to turn off the use of cache
2918 # files altogether, and which should be passed on to subconfigures.
2919 # Also strip program-prefix, program-suffix, and program-transform-name,
2920 # so that we can pass down a consistent program-transform-name.
2921 baseargs=
2922 tbaseargs=
2923 keep_next=no
2924 skip_next=no
2925 eval "set -- $ac_configure_args"
2926 for ac_arg
2927 do
2928   if test X"$skip_next" = X"yes"; then
2929     skip_next=no
2930     continue
2931   fi
2932   if test X"$keep_next" = X"yes"; then
2933     case $ac_arg in
2934       *\'*)
2935         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2936     esac
2937     baseargs="$baseargs '$ac_arg'"
2938     tbaseargs="$tbaseargs '$ac_arg'"
2939     keep_next=no
2940     continue
2941   fi
2942
2943   # Handle separated arguments.  Based on the logic generated by
2944   # autoconf 2.59.
2945   case $ac_arg in
2946     *=* | --config-cache | -C | -disable-* | --disable-* \
2947       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2948       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2949       | -with-* | --with-* | -without-* | --without-* | --x)
2950       separate_arg=no
2951       ;;
2952     -*)
2953       separate_arg=yes
2954       ;;
2955     *)
2956       separate_arg=no
2957       ;;
2958   esac
2959
2960   skip_targ=no
2961   case $ac_arg in
2962 changequote(,)
2963   --with-* | --without-*)
2964     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2965
2966     case $libopt in
2967     *[-_]include)
2968       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2969       ;;
2970     *[-_]lib)
2971       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2972       ;;
2973     *)
2974       lib=$libopt
2975       ;;
2976     esac
2977 changequote([,])
2978
2979     case $lib in
2980     mpc | mpfr | gmp | isl)
2981       # If we're processing --with-$lib, --with-$lib-include or
2982       # --with-$lib-lib, for one of the libs above, and target is
2983       # different from host, don't pass the current argument to any
2984       # target library's configure.
2985       if test x$is_cross_compiler = xyes; then
2986         skip_targ=yes
2987       fi
2988       ;;
2989     esac
2990     ;;
2991   esac
2992
2993   case "$ac_arg" in
2994     --cache-file=/dev/null | \
2995     -cache-file=/dev/null )
2996       # Handled here to avoid the test to skip args below.
2997       baseargs="$baseargs '$ac_arg'"
2998       tbaseargs="$tbaseargs '$ac_arg'"
2999       # Assert: $separate_arg should always be no.
3000       keep_next=$separate_arg
3001       ;;
3002     --no*)
3003       continue
3004       ;;
3005     --c* | \
3006     --sr* | \
3007     --ho* | \
3008     --bu* | \
3009     --t* | \
3010     --program-* | \
3011     -cache_file* | \
3012     -srcdir* | \
3013     -host* | \
3014     -build* | \
3015     -target* | \
3016     -program-prefix* | \
3017     -program-suffix* | \
3018     -program-transform-name* )
3019       skip_next=$separate_arg
3020       continue
3021       ;;
3022     -*)
3023       # An option.  Add it.
3024       case $ac_arg in
3025         *\'*)
3026           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3027       esac
3028       baseargs="$baseargs '$ac_arg'"
3029       if test X"$skip_targ" = Xno; then
3030         tbaseargs="$tbaseargs '$ac_arg'"
3031       fi
3032       keep_next=$separate_arg
3033       ;;
3034     *)
3035       # Either a variable assignment, or a nonopt (triplet).  Don't
3036       # pass it down; let the Makefile handle this.
3037       continue
3038       ;;
3039   esac
3040 done
3041 # Remove the initial space we just introduced and, as these will be
3042 # expanded by make, quote '$'.
3043 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3044
3045 # Add in --program-transform-name, after --program-prefix and
3046 # --program-suffix have been applied to it.  Autoconf has already
3047 # doubled dollar signs and backslashes in program_transform_name; we want
3048 # the backslashes un-doubled, and then the entire thing wrapped in single
3049 # quotes, because this will be expanded first by make and then by the shell.
3050 # Also, because we want to override the logic in subdir configure scripts to
3051 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3052 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3053 ${program_transform_name}
3054 EOF_SED
3055 gcc_transform_name=`cat conftestsed.out`
3056 rm -f conftestsed.out
3057 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3058 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3059 if test "$silent" = yes; then
3060   baseargs="$baseargs --silent"
3061   tbaseargs="$tbaseargs --silent"
3062 fi
3063 baseargs="$baseargs --disable-option-checking"
3064 tbaseargs="$tbaseargs --disable-option-checking"
3065
3066 # Record and document user additions to sub configure arguments.
3067 AC_ARG_VAR([build_configargs],
3068            [additional configure arguments for build directories])
3069 AC_ARG_VAR([host_configargs],
3070            [additional configure arguments for host directories])
3071 AC_ARG_VAR([target_configargs],
3072            [additional configure arguments for target directories])
3073
3074 # For the build-side libraries, we just need to pretend we're native,
3075 # and not use the same cache file.  Multilibs are neither needed nor
3076 # desired.  We can't even use the same cache file for all build-side
3077 # libraries, as they're compiled differently; some with C, some with
3078 # C++ or with different feature-enabling options.
3079 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3080
3081 # For host modules, accept cache file option, or specification as blank.
3082 case "${cache_file}" in
3083 "") # empty
3084   cache_file_option="" ;;
3085 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3086   cache_file_option="--cache-file=${cache_file}" ;;
3087 *) # relative path
3088   cache_file_option="--cache-file=../${cache_file}" ;;
3089 esac
3090
3091 # Host dirs don't like to share a cache file either, horribly enough.
3092 # This seems to be due to autoconf 2.5x stupidity.
3093 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3094
3095 target_configargs="$target_configargs ${tbaseargs}"
3096
3097 # Passing a --with-cross-host argument lets the target libraries know
3098 # whether they are being built with a cross-compiler or being built
3099 # native.  However, it would be better to use other mechanisms to make the
3100 # sorts of decisions they want to make on this basis.  Please consider
3101 # this option to be deprecated.  FIXME.
3102 if test x${is_cross_compiler} = xyes ; then
3103   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3104 fi
3105
3106 # Special user-friendly check for native x86_64-linux build, if
3107 # multilib is not explicitly enabled.
3108 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3109   x86_64-*linux*:yes:$build:$build:)
3110     # Make sure we have a development environment that handles 32-bit
3111     dev64=no
3112     echo "int main () { return 0; }" > conftest.c
3113     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3114     if test $? = 0 ; then
3115       if test -s conftest || test -s conftest.exe ; then
3116         dev64=yes
3117       fi
3118     fi
3119     rm -f conftest*
3120     if test x${dev64} != xyes ; then
3121       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.])
3122     fi
3123     ;;
3124 esac
3125
3126 # Default to --enable-multilib.
3127 if test x${enable_multilib} = x ; then
3128   target_configargs="--enable-multilib ${target_configargs}"
3129 fi
3130
3131 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3132 # changed from the earlier setting of with_newlib.
3133 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3134   target_configargs="--with-newlib ${target_configargs}"
3135 fi
3136
3137 # Different target subdirs use different values of certain variables
3138 # (notably CXX).  Worse, multilibs use *lots* of different values.
3139 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3140 # it doesn't automatically accept command-line overrides of them.
3141 # This means it's not safe for target subdirs to share a cache file,
3142 # which is disgusting, but there you have it.  Hopefully this can be
3143 # fixed in future.  It's still worthwhile to use a cache file for each
3144 # directory.  I think.
3145
3146 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3147 # We need to pass --target, as newer autoconf's requires consistency
3148 # for target_alias and gcc doesn't manage it consistently.
3149 target_configargs="--cache-file=./config.cache ${target_configargs}"
3150
3151 FLAGS_FOR_TARGET=
3152 case " $target_configdirs " in
3153  *" newlib "*)
3154   case " $target_configargs " in
3155   *" --with-newlib "*)
3156    case "$target" in
3157     *-cygwin*)
3158       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3159       ;;
3160    esac
3161
3162    # If we're not building GCC, don't discard standard headers.
3163    if test -d ${srcdir}/gcc; then
3164      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3165
3166      if test "${build}" != "${host}"; then
3167        # On Canadian crosses, CC_FOR_TARGET will have already been set
3168        # by `configure', so we won't have an opportunity to add -Bgcc/
3169        # to it.  This is right: we don't want to search that directory
3170        # for binaries, but we want the header files in there, so add
3171        # them explicitly.
3172        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3173
3174        # Someone might think of using the pre-installed headers on
3175        # Canadian crosses, in case the installed compiler is not fully
3176        # compatible with the compiler being built.  In this case, it
3177        # would be better to flag an error than risking having
3178        # incompatible object files being constructed.  We can't
3179        # guarantee that an error will be flagged, but let's hope the
3180        # compiler will do it, when presented with incompatible header
3181        # files.
3182      fi
3183    fi
3184
3185    case "${target}-${is_cross_compiler}" in
3186    i[[3456789]]86-*-linux*-no)
3187       # Here host == target, so we don't need to build gcc,
3188       # so we don't want to discard standard headers.
3189       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3190       ;;
3191    *)
3192       # If we're building newlib, use its generic headers last, but search
3193       # for any libc-related directories first (so make it the last -B
3194       # switch).
3195       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3196
3197       # If we're building libgloss, find the startup file, simulator library
3198       # and linker script.
3199       case " $target_configdirs " in
3200         *" libgloss "*)
3201         # Look for startup file, simulator library and maybe linker script.
3202         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3203         # Look for libnosys.a in case the target needs it.
3204         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3205         # Most targets have the linker script in the source directory.
3206         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3207         ;;
3208       esac
3209       ;;
3210    esac
3211    ;;
3212   esac
3213   ;;
3214 esac
3215
3216 case "$target" in
3217   x86_64-*mingw* | *-w64-mingw*)
3218   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3219   # however, use a symlink named 'mingw' in ${prefix} .
3220     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3221     ;;
3222   *-mingw*)
3223   # MinGW can't be handled as Cygwin above since it does not use newlib.
3224     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
3225     ;;
3226 esac
3227
3228 # Allow the user to override the flags for
3229 # our build compiler if desired.
3230 if test x"${build}" = x"${host}" ; then
3231   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3232   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3233   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3234 fi
3235
3236 # On Canadian crosses, we'll be searching the right directories for
3237 # the previously-installed cross compiler, so don't bother to add
3238 # flags for directories within the install tree of the compiler
3239 # being built; programs in there won't even run.
3240 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3241   # Search for pre-installed headers if nothing else fits.
3242   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3243 fi
3244
3245 if test "x${use_gnu_ld}" = x &&
3246    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3247   # Arrange for us to find uninstalled linker scripts.
3248   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3249 fi
3250
3251 # Search for other target-specific linker scripts and such.
3252 case "${target}" in
3253   mep*)
3254     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3255     ;;
3256 esac
3257
3258 # Makefile fragments.
3259 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3260 do
3261   eval fragval=\$$frag
3262   if test $fragval != /dev/null; then
3263     eval $frag=${srcdir}/$fragval
3264   fi
3265 done
3266 AC_SUBST_FILE(host_makefile_frag)
3267 AC_SUBST_FILE(target_makefile_frag)
3268 AC_SUBST_FILE(alphaieee_frag)
3269 AC_SUBST_FILE(ospace_frag)
3270
3271 # Miscellanea: directories, flags, etc.
3272 AC_SUBST(RPATH_ENVVAR)
3273 AC_SUBST(GCC_SHLIB_SUBDIR)
3274 AC_SUBST(tooldir)
3275 AC_SUBST(build_tooldir)
3276 AC_SUBST(CONFIGURE_GDB_TK)
3277 AC_SUBST(GDB_TK)
3278 AC_SUBST(INSTALL_GDB_TK)
3279
3280 # Build module lists & subconfigure args.
3281 AC_SUBST(build_configargs)
3282 AC_SUBST(build_configdirs)
3283
3284 # Host module lists & subconfigure args.
3285 AC_SUBST(host_configargs)
3286 AC_SUBST(configdirs)
3287 AC_SUBST(target_configdirs)
3288
3289 # Target module lists & subconfigure args.
3290 AC_SUBST(target_configargs)
3291
3292
3293 # Build tools.
3294 AC_SUBST(AR_FOR_BUILD)
3295 AC_SUBST(AS_FOR_BUILD)
3296 AC_SUBST(CC_FOR_BUILD)
3297 AC_SUBST(CFLAGS_FOR_BUILD)
3298 AC_SUBST(CXXFLAGS_FOR_BUILD)
3299 AC_SUBST(CXX_FOR_BUILD)
3300 AC_SUBST(DLLTOOL_FOR_BUILD)
3301 AC_SUBST(GFORTRAN_FOR_BUILD)
3302 AC_SUBST(GOC_FOR_BUILD)
3303 AC_SUBST(GDC_FOR_BUILD)
3304 AC_SUBST(LDFLAGS_FOR_BUILD)
3305 AC_SUBST(LD_FOR_BUILD)
3306 AC_SUBST(NM_FOR_BUILD)
3307 AC_SUBST(RANLIB_FOR_BUILD)
3308 AC_SUBST(WINDMC_FOR_BUILD)
3309 AC_SUBST(WINDRES_FOR_BUILD)
3310
3311 # Generate default definitions for YACC, M4, LEX and other programs that run
3312 # on the build machine.  These are used if the Makefile can't locate these
3313 # programs in objdir.
3314 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3315
3316 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3317 case " $build_configdirs " in
3318   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3319 esac
3320
3321 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3322 case " $build_configdirs " in
3323   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3324 esac
3325
3326 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3327 case " $build_configdirs " in
3328   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3329 esac
3330
3331 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3332 case " $build_configdirs " in
3333   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3334   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3335 esac
3336
3337 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3338 case " $build_configdirs " in
3339   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3340 esac
3341
3342 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3343 case " $build_configdirs " in
3344   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3345   *)
3346 changequote(,)
3347     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3348     # higher, else we use the "missing" dummy.
3349     if ${MAKEINFO} --version \
3350        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3351       :
3352     else
3353       MAKEINFO="$MISSING makeinfo"
3354     fi
3355     ;;
3356 changequote([,])
3357 esac
3358
3359 # FIXME: expect and dejagnu may become build tools?
3360
3361 AC_CHECK_PROGS(EXPECT, expect, expect)
3362 case " $configdirs " in
3363   *" expect "*)
3364     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3365     ;;
3366 esac
3367
3368 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3369 case " $configdirs " in
3370   *" dejagnu "*)
3371     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3372     ;;
3373 esac
3374
3375
3376 # Host tools.
3377 NCN_STRICT_CHECK_TOOLS(AR, ar)
3378 NCN_STRICT_CHECK_TOOLS(AS, as)
3379 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3380 NCN_STRICT_CHECK_TOOLS(LD, ld)
3381 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3382 NCN_STRICT_CHECK_TOOLS(NM, nm)
3383 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3384 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3385 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3386 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3387 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3388 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3389 NCN_STRICT_CHECK_TOOLS(OTOOL, otool)
3390 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3391 AC_SUBST(CC)
3392 AC_SUBST(CXX)
3393 AC_SUBST(CFLAGS)
3394 AC_SUBST(CXXFLAGS)
3395
3396 # Target tools.
3397 AC_ARG_WITH([build-time-tools],
3398   [AS_HELP_STRING([--with-build-time-tools=PATH],
3399                   [use given path to find target tools during the build])],
3400   [case x"$withval" in
3401      x/*) ;;
3402      *)
3403        with_build_time_tools=
3404        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3405        ;;
3406    esac],
3407   [with_build_time_tools=])
3408
3409 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3410 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3411 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3412 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3413 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3414 NCN_STRICT_CHECK_TARGET_TOOLS(GDC_FOR_TARGET, gdc)
3415
3416 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3417 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3418 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3419 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3420 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3421 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3422 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3423 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3424 ACX_CHECK_INSTALLED_TARGET_TOOL(OTOOL_FOR_TARGET, otool)
3425 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3426 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3427 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3428 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3429 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3430
3431 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3432
3433 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3434 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3435 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3436 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3437 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3438                 [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],
3439                 c++)
3440 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3441                 [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],
3442                 c++)
3443 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3444 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3445 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3446                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3447 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3448                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3449 GCC_TARGET_TOOL(gdc, GDC_FOR_TARGET, GDC,
3450                 [gcc/gdc -B$$r/$(HOST_SUBDIR)/gcc/], d)
3451 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3452 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3453 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3454 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3455 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3456 GCC_TARGET_TOOL(otool, OTOOL_FOR_TARGET, OTOOL)
3457 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3458 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3459 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3460 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3461 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3462
3463 AC_SUBST(FLAGS_FOR_TARGET)
3464 AC_SUBST(RAW_CXX_FOR_TARGET)
3465
3466 # Certain tools may need extra flags.
3467 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3468 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3469 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3470
3471 # When building target libraries, except in a Canadian cross, we use
3472 # the same toolchain as the compiler we just built.
3473 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3474 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3475 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3476 if test $host = $build; then
3477   case " $configdirs " in
3478     *" gcc "*)
3479       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3480       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3481       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3482       ;;
3483   esac
3484 fi
3485
3486 AC_SUBST(COMPILER_AS_FOR_TARGET)
3487 AC_SUBST(COMPILER_LD_FOR_TARGET)
3488 AC_SUBST(COMPILER_NM_FOR_TARGET)
3489
3490 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3491 AC_ARG_ENABLE(maintainer-mode,
3492 [AS_HELP_STRING([--enable-maintainer-mode],
3493                 [enable make rules and dependencies not useful
3494                  (and sometimes confusing) to the casual installer])],
3495       USE_MAINTAINER_MODE=$enableval,
3496       USE_MAINTAINER_MODE=no)
3497 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3498 AC_SUBST(MAINTAINER_MODE_TRUE)
3499 AC_SUBST(MAINTAINER_MODE_FALSE)
3500 if test "$USE_MAINTAINER_MODE" = yes; then
3501   MAINTAINER_MODE_TRUE=
3502   MAINTAINER_MODE_FALSE='#'
3503 else
3504   MAINTAINER_MODE_TRUE='#'
3505   MAINTAINER_MODE_FALSE=
3506 fi
3507 MAINT=$MAINTAINER_MODE_TRUE
3508 AC_SUBST(MAINT)dnl
3509
3510 # ---------------------
3511 # GCC bootstrap support
3512 # ---------------------
3513
3514 # Stage specific cflags for build.
3515 stage1_cflags="-g"
3516 case $build in
3517   vax-*-*)
3518     case ${GCC} in
3519       yes) stage1_cflags="-g -Wa,-J" ;;
3520       *) stage1_cflags="-g -J" ;;
3521     esac ;;
3522 esac
3523
3524 AC_SUBST(stage1_cflags)
3525
3526 # Enable --enable-checking in stage1 of the compiler.
3527 AC_ARG_ENABLE(stage1-checking,
3528 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3529                 [choose additional checking for stage1 of the compiler])],
3530 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3531 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3532   # For --disable-checking or implicit --enable-checking=release, avoid
3533   # setting --enable-checking=gc in the default stage1 checking for LTO
3534   # bootstraps.  See PR62077.
3535   case $BUILD_CONFIG in
3536     *lto*)
3537       stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
3538     *)
3539       stage1_checking=--enable-checking=yes,types;;
3540   esac
3541   if test "x$enable_checking" = x && \
3542      test -d ${srcdir}/gcc && \
3543      test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3544     stage1_checking=--enable-checking=yes,types,extra
3545   fi
3546 else
3547   stage1_checking=--enable-checking=$enable_checking,types
3548 fi])
3549 AC_SUBST(stage1_checking)
3550
3551 # Enable -Werror in bootstrap stage2 and later.
3552 AC_ARG_ENABLE(werror,
3553 [AS_HELP_STRING([--enable-werror],
3554                 [enable -Werror in bootstrap stage2 and later])],
3555 [
3556 case ${enable_werror} in
3557   yes) stage2_werror_flag="--enable-werror-always" ;;
3558   *) stage2_werror_flag="" ;;
3559 esac
3560 ],
3561 [
3562 if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3563   case $BUILD_CONFIG in
3564   bootstrap-debug)
3565       stage2_werror_flag="--enable-werror-always" ;;
3566   "")
3567       stage2_werror_flag="--enable-werror-always" ;;
3568   esac
3569 fi
3570 ])
3571
3572 AC_SUBST(stage2_werror_flag)
3573
3574 # Specify what files to not compare during bootstrap.
3575
3576 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3577 case "$target" in
3578   hppa*64*-*-hpux*) ;;
3579   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/* | gcc/function-tests.o" ;;
3580   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3581 esac
3582 AC_SUBST(compare_exclusions)
3583
3584 AC_CONFIG_FILES([Makefile],
3585   [sed "$extrasub_build" Makefile |
3586    sed "$extrasub_host" |
3587    sed "$extrasub_target" > mf$$
3588    mv -f mf$$ Makefile],
3589   [extrasub_build="$extrasub_build"
3590    extrasub_host="$extrasub_host"
3591    extrasub_target="$extrasub_target"])
3592 AC_OUTPUT