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, 2020 Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; see the file COPYING3.  If not see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 ##############################################################################
  20 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
  21
  22 m4_include(config/acx.m4)
  23 m4_include(config/override.m4)
  24 m4_include(config/proginstall.m4)
  25 m4_include(config/elf.m4)
  26 m4_include(config/gcc-plugin.m4)
  27 m4_include([libtool.m4])
  28 m4_include([ltoptions.m4])
  29 m4_include([ltsugar.m4])
  30 m4_include([ltversion.m4])
  31 m4_include([lt~obsolete.m4])
  32 m4_include([config/isl.m4])
  33
  34 AC_INIT(move-if-change)
  35 AC_DISABLE_OPTION_CHECKING
  36
  37 progname=$0
  38 # if PWD already has a value, it is probably wrong.
  39 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  40
  41 # Export original configure arguments for use by sub-configures.
  42 # Quote arguments with shell meta charatcers.
  43 TOPLEVEL_CONFIGURE_ARGUMENTS=
  44 set -- "$progname" "$@"
  45 for ac_arg
  46 do
  47   case "$ac_arg" in
  48   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  49     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  50     # if the argument is of the form -foo=baz, quote the baz part only
  51     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  52   *) ;;
  53   esac
  54   # Add the quoted argument to the list.
  55   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  56 done
  57 if test "$silent" = yes; then
  58   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  59 fi
  60 # Remove the initial space we just introduced and, as these will be
  61 # expanded by make, quote '$'.
  62 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  63 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  64
  65 # Find the build, host, and target systems.
  66 ACX_NONCANONICAL_BUILD
  67 ACX_NONCANONICAL_HOST
  68 ACX_NONCANONICAL_TARGET
  69
  70 dnl Autoconf 2.5x and later will set a default program prefix if
  71 dnl --target was used, even if it was the same as --host.  Disable
  72 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  73 dnl to take effect.
  74 test "$host_noncanonical" = "$target_noncanonical" &&
  75   test "$program_prefix$program_suffix$program_transform_name" = \
  76     NONENONEs,x,x, &&
  77   program_transform_name=s,y,y,
  78
  79 AC_CANONICAL_SYSTEM
  80 AC_ARG_PROGRAM
  81
  82 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  83 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  84
  85 # Get 'install' or 'install-sh' and its variants.
  86 AC_PROG_INSTALL
  87 ACX_PROG_LN
  88 AC_PROG_LN_S
  89 AC_PROG_SED
  90 AC_PROG_AWK
  91
  92 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  93
  94 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  95 # a relative path.
  96 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  97   INSTALL="${srcpwd}/install-sh -c"
  98 fi
  99
 100 # Set srcdir to "." if that's what it is.
 101 # This is important for multilib support.
 102 pwd=`${PWDCMD-pwd}`
 103 if test "${pwd}" = "${srcpwd}" ; then
 104   srcdir=.
 105 fi
 106
 107 topsrcdir=$srcpwd
 108
 109 extra_host_args=
 110
 111 ### To add a new directory to the tree, first choose whether it is a target
 112 ### or a host dependent tool.  Then put it into the appropriate list
 113 ### (library or tools, host or target), doing a dependency sort.
 114
 115 # Subdirs will be configured in the order listed in build_configdirs,
 116 # configdirs, or target_configdirs; see the serialization section below.
 117
 118 # Dependency sorting is only needed when *configuration* must be done in
 119 # a particular order.  In all cases a dependency should be specified in
 120 # the Makefile, whether or not it's implicitly specified here.
 121
 122 # Double entries in build_configdirs, configdirs, or target_configdirs may
 123 # cause circular dependencies and break everything horribly.
 124
 125 # these library is used by various programs built for the build
 126 # environment
 127 #
 128 build_libs="build-libiberty build-libcpp"
 129
 130 # these tools are built for the build environment
 131 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 132
 133 # these libraries are used by various programs built for the host environment
 134 #f
 135 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl libelf libiconv libctf"
 136
 137 # these tools are built for the host environment
 138 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 139 # know that we are building the simulator.
 140 # binutils, gas and ld appear in that order because it makes sense to run
 141 # "make check" in that particular order.
 142 # If --enable-gold is used, "gold" may replace "ld".
 143 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gdbserver gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
 144
 145 # these libraries are built for the target environment, and are built after
 146 # the host libraries and the host tools (which may be a cross compiler)
 147 # Note that libiberty is not a target library.
 148 target_libraries="target-libgcc \
 149                 target-libbacktrace \
 150                 target-libgloss \
 151                 target-newlib \
 152                 target-libgomp \
 153                 target-liboffloadmic \
 154                 target-libhsail-rt \
 155                 target-libatomic \
 156                 target-libitm \
 157                 target-libstdc++-v3 \
 158                 target-libsanitizer \
 159                 target-libvtv \
 160                 target-libssp \
 161                 target-libquadmath \
 162                 target-libgfortran \
 163                 target-libffi \
 164                 target-libobjc \
 165                 target-libada \
 166                 target-libgo"
 167
 168 # these tools are built using the target libraries, and are intended to
 169 # run only in the target environment
 170 #
 171 # note: any program that *uses* libraries that are in the "target_libraries"
 172 # list belongs in this list.
 173 #
 174 target_tools="target-rda"
 175
 176 ################################################################################
 177
 178 ## All tools belong in one of the four categories, and are assigned above
 179 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 180 ## is important because configure will choke if they ever get through.
 181 ## ${configdirs} is directories we build using the host tools.
 182 ## ${target_configdirs} is directories we build using the target tools.
 183 configdirs=`echo ${host_libs} ${host_tools}`
 184 target_configdirs=`echo ${target_libraries} ${target_tools}`
 185 build_configdirs=`echo ${build_libs} ${build_tools}`
 186
 187 m4_divert_text([PARSE_ARGS],
 188 [case $srcdir in
 189   *" "*)
 190 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 191     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 192 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 193     ;;
 194 esac
 195 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 196 ])
 197
 198 ################################################################################
 199
 200 srcname="gnu development package"
 201
 202 # This gets set non-empty for some net releases of packages.
 203 appdirs=""
 204
 205 # Define is_cross_compiler to save on calls to 'test'.
 206 is_cross_compiler=
 207 if test x"${host}" = x"${target}" ; then
 208   is_cross_compiler=no
 209 else
 210   is_cross_compiler=yes
 211 fi
 212
 213 # Find the build and target subdir names.
 214 GCC_TOPLEV_SUBDIRS
 215 # Be sure to cover against remnants of an in-tree build.
 216 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 217   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 218 Use a pristine source tree when building in a separate tree])
 219 fi
 220
 221 # Skipdirs are removed silently.
 222 skipdirs=
 223 # Noconfigdirs are removed loudly.
 224 noconfigdirs=""
 225
 226 use_gnu_ld=
 227 # Make sure we don't let GNU ld be added if we didn't want it.
 228 if test x$with_gnu_ld = xno ; then
 229   use_gnu_ld=no
 230   noconfigdirs="$noconfigdirs ld gold"
 231 fi
 232
 233 use_gnu_as=
 234 # Make sure we don't let GNU as be added if we didn't want it.
 235 if test x$with_gnu_as = xno ; then
 236   use_gnu_as=no
 237   noconfigdirs="$noconfigdirs gas"
 238 fi
 239
 240 use_included_zlib=
 241 AC_ARG_WITH(system-zlib,
 242 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
 243 # Make sure we don't let ZLIB be added if we didn't want it.
 244 if test x$with_system_zlib = xyes ; then
 245   use_included_zlib=no
 246   noconfigdirs="$noconfigdirs zlib"
 247 fi
 248
 249 # Don't compile the bundled readline/libreadline.a if --with-system-readline
 250 # is provided.
 251 if test x$with_system_readline = xyes ; then
 252   noconfigdirs="$noconfigdirs readline"
 253 fi
 254
 255 # some tools are so dependent upon X11 that if we're not building with X,
 256 # it's not even worth trying to configure, much less build, that tool.
 257
 258 case ${with_x} in
 259   yes | "") ;; # the default value for this tree is that X11 is available
 260   no)
 261     skipdirs="${skipdirs} tk itcl libgui"
 262     # We won't be able to build gdbtk without X.
 263     enable_gdbtk=no
 264     ;;
 265   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 266 esac
 267
 268 # Some are only suitable for cross toolchains.
 269 # Remove these if host=target.
 270 cross_only="target-libgloss target-newlib target-opcodes"
 271
 272 case $is_cross_compiler in
 273   no) skipdirs="${skipdirs} ${cross_only}" ;;
 274 esac
 275
 276 # If both --with-headers and --with-libs are specified, default to
 277 # --without-newlib.
 278 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 279    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 280   if test x"${with_newlib}" = x ; then
 281     with_newlib=no
 282   fi
 283 fi
 284
 285 # Recognize --with-newlib/--without-newlib.
 286 case ${with_newlib} in
 287   no) skipdirs="${skipdirs} target-newlib" ;;
 288   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 289 esac
 290
 291 AC_ARG_ENABLE(as-accelerator-for,
 292 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 293                 [build as offload target compiler.
 294                 Specify offload host triple by ARG])])
 295
 296 AC_ARG_ENABLE(offload-targets,
 297 [AS_HELP_STRING([--enable-offload-targets=LIST],
 298                 [enable offloading to devices from comma-separated LIST of
 299                 TARGET[=DIR]. Use optional path to find offload target compiler
 300                 during the build])],
 301 [
 302   if test x"$enable_offload_targets" = x; then
 303     AC_MSG_ERROR([no offload targets specified])
 304   fi
 305 ], [enable_offload_targets=])
 306
 307 # Handle --enable-gold, --enable-ld.
 308 # --disable-gold [--enable-ld]
 309 #     Build only ld.  Default option.
 310 # --enable-gold [--enable-ld]
 311 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 312 #     as "ld.bfd" and "ld".
 313 # --enable-gold=default [--enable-ld]
 314 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 315 #     install ld as "ld.bfd".
 316 # --enable-gold[=default] --disable-ld
 317 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 318 # --enable-gold --enable-ld=default
 319 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 320 #     and ld.bfd).
 321 #     In other words, ld is default
 322 # --enable-gold=default --enable-ld=default
 323 #     Error.
 324
 325 default_ld=
 326 AC_ARG_ENABLE(gold,
 327 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 328                 [build gold @<:@ARG={default,yes,no}@:>@])],
 329 ENABLE_GOLD=$enableval,
 330 ENABLE_GOLD=no)
 331 case "${ENABLE_GOLD}" in
 332   yes|default)
 333     # Check for ELF target.
 334     is_elf=no
 335     case "${target}" in
 336       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 337       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 338       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 339       | *-*-solaris2* | *-*-nto* | *-*-nacl* | *-*-haiku*)
 340         case "${target}" in
 341           *-*-linux*aout* | *-*-linux*oldld*)
 342             ;;
 343           *)
 344             is_elf=yes
 345             ;;
 346         esac
 347     esac
 348
 349     if test "$is_elf" = "yes"; then
 350       # Check for target supported by gold.
 351       case "${target}" in
 352         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 353         | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
 354           configdirs="$configdirs gold"
 355           if test x${ENABLE_GOLD} = xdefault; then
 356             default_ld=gold
 357           fi
 358           ENABLE_GOLD=yes
 359           ;;
 360       esac
 361     fi
 362     ;;
 363   no)
 364     ;;
 365   *)
 366     AC_MSG_ERROR([invalid --enable-gold argument])
 367     ;;
 368 esac
 369
 370 AC_ARG_ENABLE(ld,
 371 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 372                 [build ld @<:@ARG={default,yes,no}@:>@])],
 373 ENABLE_LD=$enableval,
 374 ENABLE_LD=yes)
 375
 376 case "${ENABLE_LD}" in
 377   default)
 378     if test x${default_ld} != x; then
 379       AC_MSG_ERROR([either gold or ld can be the default ld])
 380     fi
 381     ;;
 382   yes)
 383     ;;
 384   no)
 385     if test x${ENABLE_GOLD} != xyes; then
 386       AC_MSG_WARN([neither ld nor gold are enabled])
 387     fi
 388     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 389     ;;
 390   *)
 391     AC_MSG_ERROR([invalid --enable-ld argument])
 392     ;;
 393 esac
 394
 395 AC_ARG_ENABLE(gprofng,
 396 [AS_HELP_STRING([[--enable-gprofng[=ARG]]],
 397                 [build gprofng @<:@ARG={yes,no}@:>@])],
 398 enable_gprofng=$enableval,
 399 enable_gprofng=yes)
 400 if test "$enable_gprofng" = "yes"; then
 401   case "${target}" in
 402     x86_64-*-linux* | i?86-*-linux* | aarch64-*-linux*)
 403     configdirs="$configdirs gprofng"
 404     ;;
 405   esac
 406 fi
 407
 408
 409 # PR gas/19109
 410 # Decide the default method for compressing debug sections.
 411 # Provide a configure time option to override our default.
 412 AC_ARG_ENABLE(compressed_debug_sections,
 413 [AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
 414                 [Enable compressed debug sections for gas, gold or ld by
 415                  default])],
 416 [
 417   if test x"$enable_compressed_debug_sections" = xyes; then
 418     AC_MSG_ERROR([no program with compressed debug sections specified])
 419   fi
 420 ], [enable_compressed_debug_sections=])
 421
 422 # Configure extra directories which are host specific
 423
 424 case "${host}" in
 425   *-cygwin*)
 426     configdirs="$configdirs libtermcap" ;;
 427 esac
 428
 429 # A target can indicate whether a language isn't supported for some reason.
 430 # Only spaces may be used in this macro; not newlines or tabs.
 431 unsupported_languages=
 432
 433 # Remove more programs from consideration, based on the host or
 434 # target this usually means that a port of the program doesn't
 435 # exist yet.
 436
 437 case "${host}" in
 438   i[[3456789]]86-*-msdosdjgpp*)
 439     noconfigdirs="$noconfigdirs tcl tk itcl"
 440     ;;
 441 esac
 442
 443 # Default to --disable-year2038 until we can handle differences between
 444 # projects that use gnulib (which understands year 2038) and projects that
 445 # do not (like BFD).
 446 AC_ARG_ENABLE(year2038,
 447 AS_HELP_STRING([--enable-year2038],
 448   [enable support for timestamps past the year 2038]),
 449 ENABLE_YEAR2038=$enableval,
 450 ENABLE_YEAR2038=no)
 451 enable_year2038=
 452 if test "${ENABLE_YEAR2038}" = "no" ; then
 453   enable_year2038=no
 454 fi
 455
 456 AC_ARG_ENABLE(libquadmath,
 457 AS_HELP_STRING([--disable-libquadmath],
 458   [do not build libquadmath directory]),
 459 ENABLE_LIBQUADMATH=$enableval,
 460 ENABLE_LIBQUADMATH=yes)
 461 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 462   noconfigdirs="$noconfigdirs target-libquadmath"
 463 fi
 464
 465
 466 AC_ARG_ENABLE(libquadmath-support,
 467 AS_HELP_STRING([--disable-libquadmath-support],
 468   [disable libquadmath support for Fortran]),
 469 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 470 ENABLE_LIBQUADMATH_SUPPORT=yes)
 471 enable_libquadmath_support=
 472 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 473   enable_libquadmath_support=no
 474 fi
 475
 476
 477 AC_ARG_ENABLE(libada,
 478 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 479 ENABLE_LIBADA=$enableval,
 480 ENABLE_LIBADA=yes)
 481 if test "${ENABLE_LIBADA}" != "yes" ; then
 482   noconfigdirs="$noconfigdirs gnattools"
 483 fi
 484
 485 AC_ARG_ENABLE(libssp,
 486 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 487 ENABLE_LIBSSP=$enableval,
 488 ENABLE_LIBSSP=yes)
 489
 490 AC_ARG_ENABLE(libstdcxx,
 491 AS_HELP_STRING([--disable-libstdcxx],
 492   [do not build libstdc++-v3 directory]),
 493 ENABLE_LIBSTDCXX=$enableval,
 494 ENABLE_LIBSTDCXX=default)
 495 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 496   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 497 fi]
 498
 499 # If this is accelerator compiler and its target is intelmic we enable
 500 # target liboffloadmic by default.  If this is compiler with offloading
 501 # for intelmic we enable host liboffloadmic by default.  Otherwise
 502 # liboffloadmic is disabled by default.
 503 AC_ARG_ENABLE([liboffloadmic],
 504 AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
 505                [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
 506 [case "$enableval" in
 507   no | host | target)
 508     enable_liboffloadmic=$enableval ;;
 509   *)
 510     AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
 511 esac],
 512 [if test x"$enable_as_accelerator_for" != x; then
 513   case "${target}" in
 514     *-intelmic-* | *-intelmicemul-*)
 515       enable_liboffloadmic=target
 516       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
 517       ;;
 518     *)
 519       enable_liboffloadmic=no
 520       ;;
 521   esac
 522 else
 523   case "${enable_offload_targets}" in
 524     *-intelmic-* | *-intelmicemul-*)
 525       enable_liboffloadmic=host
 526       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
 527       ;;
 528     *)
 529       enable_liboffloadmic=no
 530       ;;
 531     esac
 532 fi])
 533 AC_SUBST(extra_liboffloadmic_configure_flags)
 534
 535 # Enable libgomp by default on hosted POSIX systems, and a few others.
 536 if test x$enable_libgomp = x ; then
 537     case "${target}" in
 538     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 539         ;;
 540     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 541         ;;
 542     *-*-solaris2* | *-*-hpux11*)
 543         ;;
 544     *-*-darwin* | *-*-aix*)
 545         ;;
 546     nvptx*-*-*)
 547         ;;
 548     *)
 549         noconfigdirs="$noconfigdirs target-libgomp"
 550         ;;
 551     esac
 552 fi
 553
 554 # Disable libatomic on unsupported systems.
 555 if test -d ${srcdir}/libatomic; then
 556     if test x$enable_libatomic = x; then
 557         AC_MSG_CHECKING([for libatomic support])
 558         if (srcdir=${srcdir}/libatomic; \
 559                 . ${srcdir}/configure.tgt; \
 560                 test -n "$UNSUPPORTED")
 561         then
 562             AC_MSG_RESULT([no])
 563             noconfigdirs="$noconfigdirs target-libatomic"
 564         else
 565             AC_MSG_RESULT([yes])
 566         fi
 567     fi
 568 fi
 569
 570 # Disable liboffloadmic on unsupported systems.
 571 if test -d ${srcdir}/liboffloadmic; then
 572     if test x$enable_liboffloadmic != xno; then
 573         AC_MSG_CHECKING([for liboffloadmic support])
 574         if (srcdir=${srcdir}/liboffloadmic; \
 575                 . ${srcdir}/configure.tgt; \
 576                 test -n "$UNSUPPORTED")
 577         then
 578             AC_MSG_RESULT([no])
 579             noconfigdirs="$noconfigdirs target-liboffloadmic"
 580         else
 581             AC_MSG_RESULT([yes])
 582         fi
 583     fi
 584 fi
 585
 586 # Disable libitm on unsupported systems.
 587 if test -d ${srcdir}/libitm; then
 588     if test x$enable_libitm = x; then
 589         AC_MSG_CHECKING([for libitm support])
 590         if (srcdir=${srcdir}/libitm; \
 591                 . ${srcdir}/configure.tgt; \
 592                 test -n "$UNSUPPORTED")
 593         then
 594             AC_MSG_RESULT([no])
 595             noconfigdirs="$noconfigdirs target-libitm"
 596         else
 597             AC_MSG_RESULT([yes])
 598         fi
 599     fi
 600 fi
 601
 602 # Disable libsanitizer on unsupported systems.
 603 if test -d ${srcdir}/libsanitizer; then
 604     if test x$enable_libsanitizer = x; then
 605         AC_MSG_CHECKING([for libsanitizer support])
 606         if (srcdir=${srcdir}/libsanitizer; \
 607                 . ${srcdir}/configure.tgt; \
 608                 test -n "$UNSUPPORTED")
 609         then
 610             AC_MSG_RESULT([no])
 611             noconfigdirs="$noconfigdirs target-libsanitizer"
 612         else
 613             AC_MSG_RESULT([yes])
 614         fi
 615     fi
 616 fi
 617
 618 # Disable libvtv on unsupported systems.
 619 if test -d ${srcdir}/libvtv; then
 620     if test x$enable_libvtv = x; then
 621         AC_MSG_CHECKING([for libvtv support])
 622         if (srcdir=${srcdir}/libvtv; \
 623                 . ${srcdir}/configure.tgt; \
 624                 test "$VTV_SUPPORTED" != "yes")
 625         then
 626             AC_MSG_RESULT([no])
 627             noconfigdirs="$noconfigdirs target-libvtv"
 628         else
 629             AC_MSG_RESULT([yes])
 630         fi
 631     fi
 632 fi
 633
 634
 635 # Disable libhsail-rt on unsupported systems.
 636 if test -d ${srcdir}/libhsail-rt; then
 637     if test x$enable_libhsail_rt = x; then
 638         AC_MSG_CHECKING([for libhsail-rt support])
 639         if (srcdir=${srcdir}/libhsail-rt; \
 640                 . ${srcdir}/configure.tgt; \
 641                 test -n "$UNSUPPORTED")
 642         then
 643             AC_MSG_RESULT([no])
 644             unsupported_languages="$unsupported_languages brig"
 645             # This implicitly disables also target-libhsail-rt as it won't
 646             # get added to the build without BRIG FE.
 647         else
 648             AC_MSG_RESULT([yes])
 649         fi
 650     fi
 651 fi
 652
 653
 654 # Disable libquadmath for some systems.
 655 case "${target}" in
 656   avr-*-*)
 657     noconfigdirs="$noconfigdirs target-libquadmath"
 658     ;;
 659   # libquadmath is unused on AIX and libquadmath build process use of
 660   # LD_LIBRARY_PATH can break AIX bootstrap.
 661   powerpc-*-aix* | rs6000-*-aix*)
 662     noconfigdirs="$noconfigdirs target-libquadmath"
 663     ;;
 664 esac
 665
 666 # Disable libssp for some systems.
 667 case "${target}" in
 668   avr-*-*)
 669     # No hosted I/O support.
 670     noconfigdirs="$noconfigdirs target-libssp"
 671     ;;
 672   powerpc-*-aix* | rs6000-*-aix*)
 673     noconfigdirs="$noconfigdirs target-libssp"
 674     ;;
 675   rl78-*-*)
 676     # libssp uses a misaligned load to trigger a fault, but the RL78
 677     # doesn't fault for those - instead, it gives a build-time error
 678     # for explicit misaligned loads.
 679     noconfigdirs="$noconfigdirs target-libssp"
 680     ;;
 681   visium-*-*)
 682     # No hosted I/O support.
 683     noconfigdirs="$noconfigdirs target-libssp"
 684     ;;
 685 esac
 686
 687 # Disable libstdc++-v3 for some systems.
 688 # Allow user to override this if they pass --enable-libstdc++-v3
 689 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 690   case "${target}" in
 691     *-*-vxworks*)
 692       # VxWorks uses the Dinkumware C++ library.
 693       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 694       ;;
 695     arm*-wince-pe*)
 696       # the C++ libraries don't build on top of CE's C libraries
 697       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 698       ;;
 699     avr-*-*)
 700       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 701       ;;
 702     ft32-*-*)
 703       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 704       ;;
 705   esac
 706 fi
 707
 708 # Disable Fortran for some systems.
 709 case "${target}" in
 710   mmix-*-*)
 711     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 712     unsupported_languages="$unsupported_languages fortran"
 713     ;;
 714 esac
 715
 716 # Disable libffi for some systems.
 717 case "${target}" in
 718   powerpc-*-darwin*)
 719     ;;
 720   i[[3456789]]86-*-darwin*)
 721     ;;
 722   x86_64-*-darwin[[912]]*)
 723     ;;
 724   *-*-darwin*)
 725     noconfigdirs="$noconfigdirs target-libffi"
 726     ;;
 727   *-*-netware*)
 728     noconfigdirs="$noconfigdirs target-libffi"
 729     ;;
 730   *-*-phoenix*)
 731     noconfigdirs="$noconfigdirs target-libffi"
 732     ;;
 733   *-*-rtems*)
 734     noconfigdirs="$noconfigdirs target-libffi"
 735     ;;
 736   *-*-tpf*)
 737     noconfigdirs="$noconfigdirs target-libffi"
 738     ;;
 739   *-*-uclinux*)
 740     noconfigdirs="$noconfigdirs target-libffi"
 741     ;;
 742   *-*-vxworks*)
 743     noconfigdirs="$noconfigdirs target-libffi"
 744     ;;
 745   aarch64*-*-freebsd*)
 746     noconfigdirs="$noconfigdirs target-libffi"
 747     ;;
 748   alpha*-*-*vms*)
 749     noconfigdirs="$noconfigdirs target-libffi"
 750     ;;
 751   arm*-*-freebsd*)
 752     noconfigdirs="$noconfigdirs target-libffi"
 753     ;;
 754   arm-wince-pe)
 755     noconfigdirs="$noconfigdirs target-libffi"
 756     ;;
 757   cris-*-* | crisv32-*-*)
 758     case "${target}" in
 759       *-*-linux*)
 760         ;;
 761       *) # See PR46792 regarding target-libffi.
 762         noconfigdirs="$noconfigdirs target-libffi";;
 763     esac
 764     ;;
 765   hppa*64*-*-hpux*)
 766     noconfigdirs="$noconfigdirs target-libffi"
 767     ;;
 768   hppa*-hp-hpux11*)
 769     ;;
 770   hppa*-*-hpux*)
 771     noconfigdirs="$noconfigdirs target-libffi"
 772     ;;
 773   ia64*-*-*vms*)
 774     noconfigdirs="$noconfigdirs target-libffi"
 775     ;;
 776   i[[3456789]]86-w64-mingw*)
 777     noconfigdirs="$noconfigdirs target-libffi"
 778     ;;
 779   i[[3456789]]86-*-mingw*)
 780     noconfigdirs="$noconfigdirs target-libffi"
 781     ;;
 782   x86_64-*-mingw*)
 783     noconfigdirs="$noconfigdirs target-libffi"
 784     ;;
 785   mmix-*-*)
 786     noconfigdirs="$noconfigdirs target-libffi"
 787     ;;
 788   powerpc-*-aix*)
 789     ;;
 790   rs6000-*-aix*)
 791     ;;
 792   ft32-*-*)
 793     noconfigdirs="$noconfigdirs target-libffi"
 794     ;;
 795   *-*-lynxos*)
 796     noconfigdirs="$noconfigdirs target-libffi"
 797     ;;
 798 esac
 799
 800 # Disable the go frontend on systems where it is known to not work. Please keep
 801 # this in sync with contrib/config-list.mk.
 802 case "${target}" in
 803 *-*-darwin* | *-*-cygwin* | *-*-mingw*)
 804     unsupported_languages="$unsupported_languages go"
 805     ;;
 806 esac
 807
 808 # Only allow gdbserver on some systems.
 809 if test -d ${srcdir}/gdbserver; then
 810     if test x$enable_gdbserver = x; then
 811         AC_MSG_CHECKING([for gdbserver support])
 812         if (srcdir=${srcdir}/gdbserver; \
 813                 . ${srcdir}/configure.srv; \
 814                 test -n "$UNSUPPORTED")
 815         then
 816             AC_MSG_RESULT([no])
 817             noconfigdirs="$noconfigdirs gdbserver"
 818         else
 819             AC_MSG_RESULT([yes])
 820         fi
 821     fi
 822 fi
 823
 824 # Disable libgo for some systems where it is known to not work.
 825 # For testing, you can easily override this with --enable-libgo.
 826 if test x$enable_libgo = x; then
 827     case "${target}" in
 828     *-*-darwin*)
 829         # PR 46986
 830         noconfigdirs="$noconfigdirs target-libgo"
 831         ;;
 832     *-*-cygwin* | *-*-mingw*)
 833         noconfigdirs="$noconfigdirs target-libgo"
 834         ;;
 835     esac
 836 fi
 837
 838 # Default libgloss CPU subdirectory.
 839 libgloss_dir="$target_cpu"
 840
 841 case "${target}" in
 842   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 843     libgloss_dir=wince
 844     ;;
 845   aarch64*-*-* )
 846     libgloss_dir=aarch64
 847     ;;
 848   arm*-*-*)
 849     libgloss_dir=arm
 850     ;;
 851   cris-*-* | crisv32-*-*)
 852     libgloss_dir=cris
 853     ;;
 854   hppa*-*-*)
 855     libgloss_dir=pa
 856     ;;
 857   i[[3456789]]86-*-*)
 858     libgloss_dir=i386
 859     ;;
 860   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 861     libgloss_dir=m68hc11
 862     ;;
 863   m68*-*-* | fido-*-*)
 864     libgloss_dir=m68k
 865     ;;
 866   mips*-*-*)
 867     libgloss_dir=mips
 868     ;;
 869   powerpc*-*-*)
 870     libgloss_dir=rs6000
 871     ;;
 872   sparc*-*-*)
 873     libgloss_dir=sparc
 874     ;;
 875 esac
 876
 877 # Disable newlib and libgloss for various target OSes.
 878 case "${target}" in
 879   alpha*-dec-osf*)
 880     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 881     ;;
 882   i[[3456789]]86-*-linux*)
 883     # This section makes it possible to build newlib natively on linux.
 884     # If we are using a cross compiler then don't configure newlib.
 885     if test x${is_cross_compiler} != xno ; then
 886       noconfigdirs="$noconfigdirs target-newlib"
 887     fi
 888     noconfigdirs="$noconfigdirs target-libgloss"
 889     # If we are not using a cross compiler, do configure newlib.
 890     # Note however, that newlib will only be configured in this situation
 891     # if the --with-newlib option has been given, because otherwise
 892     # 'target-newlib' will appear in skipdirs.
 893     ;;
 894   i[[3456789]]86-*-rdos*)
 895     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 896     ;;
 897   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 898     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 899     ;;
 900   sparc-*-sunos4*)
 901     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 902     ;;
 903   *-*-aix*)
 904     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 905     ;;
 906   *-*-beos*)
 907     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 908     ;;
 909   *-*-chorusos)
 910     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 911     ;;
 912   *-*-dragonfly*)
 913     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 914     ;;
 915   *-*-freebsd*)
 916     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 917     ;;
 918   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 919     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 920     ;;
 921   *-*-lynxos*)
 922     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 923     ;;
 924   *-*-mingw*)
 925     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 926     ;;
 927   *-*-netbsd*)
 928     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 929     ;;
 930   *-*-netware*)
 931     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 932     ;;
 933   *-*-tpf*)
 934     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 935     ;;
 936   *-*-uclinux*)
 937     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 938     ;;
 939   *-*-vxworks*)
 940     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 941     ;;
 942 esac
 943
 944 case "${target}" in
 945   *-*-chorusos)
 946     ;;
 947   aarch64-*-darwin*)
 948     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 949     noconfigdirs="$noconfigdirs sim target-rda"
 950     ;;
 951   arm-*-darwin*)
 952     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 953     noconfigdirs="$noconfigdirs sim target-rda"
 954     ;;
 955   powerpc-*-darwin*)
 956     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 957     noconfigdirs="$noconfigdirs sim target-rda"
 958     ;;
 959   i[[3456789]]86-*-darwin*)
 960     noconfigdirs="$noconfigdirs ld gprof"
 961     noconfigdirs="$noconfigdirs sim target-rda"
 962     ;;
 963   x86_64-*-darwin[[912]]*)
 964     noconfigdirs="$noconfigdirs ld gas gprof"
 965     noconfigdirs="$noconfigdirs sim target-rda"
 966     ;;
 967   *-*-darwin*)
 968     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 969     noconfigdirs="$noconfigdirs sim target-rda"
 970     ;;
 971   *-*-dragonfly*)
 972     ;;
 973   *-*-freebsd*)
 974     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 975         && test -f /usr/local/include/gmp.h; then
 976       with_gmp=/usr/local
 977     fi
 978     ;;
 979   *-*-kaos*)
 980     # Remove unsupported stuff on all kaOS configurations.
 981     noconfigdirs="$noconfigdirs target-libgloss"
 982     ;;
 983   *-*-netbsd*)
 984     ;;
 985   *-*-netware*)
 986     ;;
 987   *-*-phoenix*)
 988     noconfigdirs="$noconfigdirs target-libgloss"
 989     ;;
 990   *-*-rtems*)
 991     noconfigdirs="$noconfigdirs target-libgloss"
 992     ;;
 993     # The tpf target doesn't support gdb yet.
 994   *-*-tpf*)
 995     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
 996     ;;
 997   *-*-uclinux*)
 998     noconfigdirs="$noconfigdirs target-rda"
 999     ;;
1000   *-*-vxworks*)
1001     ;;
1002   alpha*-dec-osf*)
1003     # ld works, but does not support shared libraries.
1004     # gas doesn't generate exception information.
1005     noconfigdirs="$noconfigdirs gas ld"
1006     ;;
1007   alpha*-*-*vms*)
1008     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1009     ;;
1010   alpha*-*-*)
1011     # newlib is not 64 bit ready
1012     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1013     ;;
1014   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1015     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1016     ;;
1017   arc*-*-*)
1018     noconfigdirs="$noconfigdirs sim"
1019     ;;
1020   arm-*-pe*)
1021     noconfigdirs="$noconfigdirs target-libgloss"
1022     ;;
1023   arm-*-riscix*)
1024     noconfigdirs="$noconfigdirs ld target-libgloss"
1025     ;;
1026   avr-*-*)
1027     if test x${with_avrlibc} != xno; then
1028       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1029     fi
1030     ;;
1031   c4x-*-* | tic4x-*-*)
1032     noconfigdirs="$noconfigdirs target-libgloss"
1033     ;;
1034   tic54x-*-*)
1035     noconfigdirs="$noconfigdirs target-libgloss gdb"
1036     ;;
1037   d10v-*-*)
1038     noconfigdirs="$noconfigdirs target-libgloss"
1039     ;;
1040   d30v-*-*)
1041     noconfigdirs="$noconfigdirs gdb"
1042     ;;
1043   fr30-*-elf*)
1044     noconfigdirs="$noconfigdirs gdb"
1045     ;;
1046   ft32-*-*)
1047     noconfigdirs="$noconfigdirs target-rda gprof"
1048     ;;
1049   moxie-*-*)
1050     noconfigdirs="$noconfigdirs"
1051     ;;
1052   h8300*-*-*)
1053     noconfigdirs="$noconfigdirs target-libgloss"
1054     ;;
1055   h8500-*-*)
1056     noconfigdirs="$noconfigdirs target-libgloss"
1057     ;;
1058   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1059     ;;
1060   hppa*64*-*-hpux*)
1061     noconfigdirs="$noconfigdirs gdb"
1062     ;;
1063   hppa*-*-hpux11*)
1064     noconfigdirs="$noconfigdirs gdb ld"
1065     ;;
1066   hppa*64*-*-linux*)
1067     ;;
1068   hppa*-*-linux*)
1069     ;;
1070   hppa*-*-*elf* | \
1071   hppa*-*-lites* | \
1072   hppa*-*-openbsd* | \
1073   hppa*64*-*-*)
1074     ;;
1075   hppa*-*-pro*)
1076     ;;
1077   hppa*-*-*)
1078     noconfigdirs="$noconfigdirs ld"
1079     ;;
1080   i960-*-*)
1081     noconfigdirs="$noconfigdirs gdb"
1082     ;;
1083   ia64*-*-elf*)
1084     # No gdb support yet.
1085     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1086     ;;
1087   ia64*-**-hpux*)
1088     # No ld support yet.
1089     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1090     ;;
1091   ia64*-*-*vms*)
1092     # No ld support yet.
1093     noconfigdirs="$noconfigdirs libgui itcl ld"
1094     ;;
1095   i[[3456789]]86-w64-mingw*)
1096     ;;
1097   i[[3456789]]86-*-mingw*)
1098     target_configdirs="$target_configdirs target-winsup"
1099     ;;
1100   *-*-cygwin*)
1101     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1102     noconfigdirs="$noconfigdirs target-libgloss"
1103     # always build newlib if winsup directory is present.
1104     if test -d "$srcdir/winsup/cygwin"; then
1105       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1106     elif test -d "$srcdir/newlib"; then
1107       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1108     fi
1109     ;;
1110   i[[3456789]]86-*-pe)
1111     noconfigdirs="$noconfigdirs target-libgloss"
1112     ;;
1113   i[[3456789]]86-*-sco3.2v5*)
1114     # The linker does not yet know about weak symbols in COFF,
1115     # and is not configured to handle mixed ELF and COFF.
1116     noconfigdirs="$noconfigdirs ld target-libgloss"
1117     ;;
1118   i[[3456789]]86-*-sco*)
1119     noconfigdirs="$noconfigdirs gprof target-libgloss"
1120     ;;
1121   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1122     noconfigdirs="$noconfigdirs target-libgloss"
1123     ;;
1124   i[[3456789]]86-*-sysv4*)
1125     noconfigdirs="$noconfigdirs target-libgloss"
1126     ;;
1127   i[[3456789]]86-*-beos*)
1128     noconfigdirs="$noconfigdirs gdb"
1129     ;;
1130   i[[3456789]]86-*-rdos*)
1131     noconfigdirs="$noconfigdirs gdb"
1132     ;;
1133   mmix-*-*)
1134     noconfigdirs="$noconfigdirs gdb"
1135     ;;
1136   mt-*-*)
1137     noconfigdirs="$noconfigdirs sim"
1138     ;;
1139   nfp-*-*)
1140     noconfigdirs="$noconfigdirs ld gas gdb gprof sim"
1141     noconfigdirs="$noconfigdirs $target_libraries"
1142     ;;
1143   pdp11-*-*)
1144     noconfigdirs="$noconfigdirs gdb gprof"
1145     ;;
1146   powerpc-*-aix*)
1147     # copied from rs6000-*-* entry
1148     noconfigdirs="$noconfigdirs gprof"
1149     ;;
1150   powerpc*-*-winnt* | powerpc*-*-pe*)
1151     target_configdirs="$target_configdirs target-winsup"
1152     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1153     # always build newlib.
1154     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1155     ;;
1156     # This is temporary until we can link against shared libraries
1157   powerpcle-*-solaris*)
1158     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1159     ;;
1160   powerpc-*-beos*)
1161     noconfigdirs="$noconfigdirs gdb"
1162     ;;
1163   rs6000-*-lynxos*)
1164     noconfigdirs="$noconfigdirs gprof"
1165     ;;
1166   rs6000-*-aix*)
1167     noconfigdirs="$noconfigdirs gprof"
1168     ;;
1169   rs6000-*-*)
1170     noconfigdirs="$noconfigdirs gprof"
1171     ;;
1172   m68k-apollo-*)
1173     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1174     ;;
1175   microblaze*)
1176     noconfigdirs="$noconfigdirs gprof"
1177     ;;
1178   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1179     if test x$with_newlib = xyes; then
1180       noconfigdirs="$noconfigdirs gprof"
1181     fi
1182     ;;
1183   mips*-*-irix5*)
1184     noconfigdirs="$noconfigdirs gprof target-libgloss"
1185     ;;
1186   mips*-*-irix6*)
1187     noconfigdirs="$noconfigdirs gprof target-libgloss"
1188     ;;
1189   mips*-*-bsd*)
1190     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1191     ;;
1192   mips*-*-linux*)
1193     ;;
1194   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1195   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1196     noconfigdirs="$noconfigdirs ld gas gprof"
1197     ;;
1198   mips*-*-*)
1199     noconfigdirs="$noconfigdirs gprof"
1200     ;;
1201   nvptx*-*-*)
1202     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1203     ;;
1204   sh-*-*)
1205     case "${target}" in
1206       sh*-*-elf)
1207          ;;
1208       *)
1209          noconfigdirs="$noconfigdirs target-libgloss" ;;
1210     esac
1211     ;;
1212   sparc-*-sunos4*)
1213     if test x${is_cross_compiler} = xno ; then
1214            use_gnu_ld=no
1215     fi
1216     ;;
1217   tic6x-*-*)
1218     noconfigdirs="$noconfigdirs sim"
1219     ;;
1220   tilepro*-*-* | tilegx*-*-*)
1221     noconfigdirs="$noconfigdirs sim"
1222     ;;
1223   v810-*-*)
1224     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1225     ;;
1226   vax-*-*)
1227     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1228     ;;
1229   wasm32-*-*)
1230     noconfigdirs="$noconfigdirs ld"
1231     ;;
1232 esac
1233
1234 # If we aren't building newlib, then don't build libgloss, since libgloss
1235 # depends upon some newlib header files.
1236 case "${noconfigdirs}" in
1237   *target-libgloss*) ;;
1238   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1239 esac
1240
1241 # Work in distributions that contain no compiler tools, like Autoconf.
1242 host_makefile_frag=/dev/null
1243 if test -d ${srcdir}/config ; then
1244 case "${host}" in
1245   i[[3456789]]86-*-msdosdjgpp*)
1246     host_makefile_frag="config/mh-djgpp"
1247     ;;
1248   *-cygwin*)
1249     ACX_CHECK_CYGWIN_CAT_WORKS
1250     host_makefile_frag="config/mh-cygwin"
1251     ;;
1252   *-mingw*)
1253     host_makefile_frag="config/mh-mingw"
1254     ;;
1255   alpha*-linux*)
1256     host_makefile_frag="config/mh-alpha-linux"
1257     ;;
1258   hppa*-hp-hpux10*)
1259     host_makefile_frag="config/mh-pa-hpux10"
1260     ;;
1261   hppa*-hp-hpux*)
1262     host_makefile_frag="config/mh-pa"
1263     ;;
1264   hppa*-*)
1265     host_makefile_frag="config/mh-pa"
1266     ;;
1267   *-*-darwin*)
1268     host_makefile_frag="config/mh-darwin"
1269     ;;
1270   powerpc-*-aix*)
1271     host_makefile_frag="config/mh-ppc-aix"
1272     ;;
1273   rs6000-*-aix*)
1274     host_makefile_frag="config/mh-ppc-aix"
1275     ;;
1276 esac
1277 fi
1278
1279 if test "${build}" != "${host}" ; then
1280   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1281   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1282   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1283   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1284   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1285   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1286   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1287   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1288   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1289   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1290   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1291   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1292 else
1293   AR_FOR_BUILD="\$(AR)"
1294   AS_FOR_BUILD="\$(AS)"
1295   CC_FOR_BUILD="\$(CC)"
1296   CXX_FOR_BUILD="\$(CXX)"
1297   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1298   GOC_FOR_BUILD="\$(GOC)"
1299   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1300   LD_FOR_BUILD="\$(LD)"
1301   NM_FOR_BUILD="\$(NM)"
1302   RANLIB_FOR_BUILD="\$(RANLIB)"
1303   WINDRES_FOR_BUILD="\$(WINDRES)"
1304   WINDMC_FOR_BUILD="\$(WINDMC)"
1305 fi
1306
1307 AC_PROG_CC_C99
1308 AC_PROG_CXX
1309
1310 # We must set the default linker to the linker used by gcc for the correct
1311 # operation of libtool.  If LD is not defined and we are using gcc, try to
1312 # set the LD default to the ld used by gcc.
1313 if test -z "$LD"; then
1314   if test "$GCC" = yes; then
1315     case $build in
1316     *-*-mingw*)
1317       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1318     *)
1319       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1320     esac
1321     case $gcc_prog_ld in
1322     # Accept absolute paths.
1323     [[\\/]* | [A-Za-z]:[\\/]*)]
1324       LD="$gcc_prog_ld" ;;
1325     esac
1326   fi
1327 fi
1328
1329 # Check whether -static-libstdc++ -static-libgcc is supported.
1330 have_static_libs=no
1331 if test "$GCC" = yes; then
1332   saved_LDFLAGS="$LDFLAGS"
1333
1334   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1335   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1336   AC_LANG_PUSH(C++)
1337   AC_LINK_IFELSE([AC_LANG_SOURCE([
1338 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1339 #error -static-libstdc++ not implemented
1340 #endif
1341 int main() {}])],
1342     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1343     [AC_MSG_RESULT([no])])
1344   AC_LANG_POP(C++)
1345
1346   LDFLAGS="$saved_LDFLAGS"
1347 fi
1348
1349 ACX_PROG_GNAT
1350 ACX_PROG_CMP_IGNORE_INITIAL
1351
1352 AC_ARG_ENABLE([bootstrap],
1353 [AS_HELP_STRING([--enable-bootstrap],
1354                 [enable bootstrapping @<:@yes if native build@:>@])],,
1355 enable_bootstrap=default)
1356
1357 # Issue errors and warnings for invalid/strange bootstrap combinations.
1358 if test -r $srcdir/gcc/configure; then
1359   have_compiler=yes
1360 else
1361   have_compiler=no
1362 fi
1363
1364 case "$have_compiler:$host:$target:$enable_bootstrap" in
1365   *:*:*:no) ;;
1366
1367   # Default behavior.  Enable bootstrap if we have a compiler
1368   # and we are in a native configuration.
1369   yes:$build:$build:default)
1370     enable_bootstrap=yes ;;
1371
1372   *:*:*:default)
1373     enable_bootstrap=no ;;
1374
1375   # We have a compiler and we are in a native configuration, bootstrap is ok
1376   yes:$build:$build:yes)
1377     ;;
1378
1379   # Other configurations, but we have a compiler.  Assume the user knows
1380   # what he's doing.
1381   yes:*:*:yes)
1382     AC_MSG_WARN([trying to bootstrap a cross compiler])
1383     ;;
1384
1385   # No compiler: if they passed --enable-bootstrap explicitly, fail
1386   no:*:*:yes)
1387     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1388
1389   # Fail if wrong command line
1390   *)
1391     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1392     ;;
1393 esac
1394
1395 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1396 # C++98 compiler can still start the bootstrap.
1397 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1398   CXX="$CXX -std=gnu++98"
1399 fi
1400
1401 AC_ARG_ENABLE([pgo-build],
1402 [AS_HELP_STRING([--enable-pgo-build[[=lto]]],
1403                 [enable the PGO build])],
1404 [enable_pgo_build=$enableval],
1405 [enable_pgo_build=no])
1406
1407 # Issue errors and warnings for invalid/strange PGO build combinations.
1408 case "$have_compiler:$host:$target:$enable_pgo_build" in
1409   *:*:*:no) ;;
1410
1411   # Allow the PGO build only if we aren't building a compiler and
1412   # we are in a native configuration.
1413   no:$build:$build:yes | no:$build:$build:lto) ;;
1414
1415   # Disallow the PGO bootstrap if we are building a compiler.
1416   yes:*:*:yes | yes:*:*:lto)
1417     AC_MSG_ERROR([cannot perform the PGO bootstrap when building a compiler]) ;;
1418
1419   *)
1420     AC_MSG_ERROR([invalid option for --enable-pgo-build])
1421     ;;
1422 esac
1423
1424 if test "$enable_pgo_build" != "no"; then
1425   AC_MSG_CHECKING([whether the compiler supports -fprofile-generate])
1426   old_CFLAGS="$CFLAGS"
1427   PGO_BUILD_GEN_CFLAGS="-fprofile-generate"
1428   CFLAGS="$CFLAGS $PGO_BUILD_CFLAGS"
1429   AC_COMPILE_IFELSE([AC_LANG_SOURCE([int foo;])],,
1430                     [PGO_BUILD_GEN_CFLAGS=])
1431   CFLAGS="$old_CFLAGS"
1432   if test -n "$PGO_BUILD_GEN_CFLAGS"; then
1433     AC_MSG_RESULT([yes])
1434     PGO_BUILD_USE_CFLAGS="-fprofile-use"
1435   else
1436     AC_MSG_RESULT([no])
1437     AC_MSG_ERROR([cannot perform the PGO build without -fprofile-generate])
1438   fi
1439
1440   if test "$enable_pgo_build" = "lto"; then
1441     AC_MSG_CHECKING([whether the compiler supports -flto=jobserver -ffat-lto-objects])
1442     old_CFLAGS="$CFLAGS"
1443     PGO_BUILD_LTO_CFLAGS="-flto=jobserver -ffat-lto-objects"
1444     CFLAGS="$CFLAGS $PGO_BUILD_LTO_CFLAGS"
1445     AC_COMPILE_IFELSE([AC_LANG_SOURCE([int foo;])],,
1446                       [PGO_BUILD_LTO_CFLAGS=])
1447     CFLAGS="$old_CFLAGS"
1448     if test -n "$PGO_BUILD_LTO_CFLAGS"; then
1449       AC_MSG_RESULT([yes])
1450     else
1451       AC_MSG_RESULT([no])
1452       AC_MSG_WARN([LTO is disabled for the PGO build])
1453     fi
1454   fi
1455 fi
1456 AC_SUBST(PGO_BUILD_GEN_CFLAGS)
1457 AC_SUBST(PGO_BUILD_USE_CFLAGS)
1458 AC_SUBST(PGO_BUILD_LTO_CFLAGS)
1459
1460 # Used for setting $lt_cv_objdir
1461 _LT_CHECK_OBJDIR
1462
1463 # Check for GMP, MPFR and MPC
1464 gmplibs="-lmpc -lmpfr -lgmp"
1465 gmpinc=
1466 have_gmp=no
1467
1468 # Specify a location for mpc
1469 # check for this first so it ends up on the link line before mpfr.
1470 AC_ARG_WITH(mpc,
1471 [AS_HELP_STRING([--with-mpc=PATH],
1472                 [specify prefix directory for installed MPC package.
1473                  Equivalent to --with-mpc-include=PATH/include
1474                  plus --with-mpc-lib=PATH/lib])])
1475 AC_ARG_WITH(mpc-include,
1476 [AS_HELP_STRING([--with-mpc-include=PATH],
1477                 [specify directory for installed MPC include files])])
1478 AC_ARG_WITH(mpc-lib,
1479 [AS_HELP_STRING([--with-mpc-lib=PATH],
1480                 [specify directory for the installed MPC library])])
1481
1482 if test "x$with_mpc" != x; then
1483   gmplibs="-L$with_mpc/lib $gmplibs"
1484   gmpinc="-I$with_mpc/include $gmpinc"
1485 fi
1486 if test "x$with_mpc_include" != x; then
1487   gmpinc="-I$with_mpc_include $gmpinc"
1488 fi
1489 if test "x$with_mpc_lib" != x; then
1490   gmplibs="-L$with_mpc_lib $gmplibs"
1491 fi
1492 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1493   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1494   gmpinc='-I$$s/mpc/src '"$gmpinc"
1495   # Do not test the mpc version.  Assume that it is sufficient, since
1496   # it is in the source tree, and the library has not been built yet
1497   # but it would be included on the link line in the version check below
1498   # hence making the test fail.
1499   have_gmp=yes
1500 fi
1501
1502 # Specify a location for mpfr
1503 # check for this first so it ends up on the link line before gmp.
1504 AC_ARG_WITH(mpfr-dir,
1505 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1506 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1507 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1508
1509 AC_ARG_WITH(mpfr,
1510 [AS_HELP_STRING([--with-mpfr=PATH],
1511                 [specify prefix directory for installed MPFR package.
1512                  Equivalent to --with-mpfr-include=PATH/include
1513                  plus --with-mpfr-lib=PATH/lib])])
1514 AC_ARG_WITH(mpfr-include,
1515 [AS_HELP_STRING([--with-mpfr-include=PATH],
1516                 [specify directory for installed MPFR include files])])
1517 AC_ARG_WITH(mpfr-lib,
1518 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1519                 [specify directory for the installed MPFR library])])
1520
1521 if test "x$with_mpfr" != x; then
1522   gmplibs="-L$with_mpfr/lib $gmplibs"
1523   gmpinc="-I$with_mpfr/include $gmpinc"
1524 fi
1525 if test "x$with_mpfr_include" != x; then
1526   gmpinc="-I$with_mpfr_include $gmpinc"
1527 fi
1528 if test "x$with_mpfr_lib" != x; then
1529   gmplibs="-L$with_mpfr_lib $gmplibs"
1530 fi
1531 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1532   # MPFR v3.1.0 moved the sources into a src sub-directory.
1533   if ! test -d ${srcdir}/mpfr/src; then
1534     AC_MSG_ERROR([dnl
1535 Building GCC with MPFR in the source tree is only handled for MPFR 3.1.0+.])
1536   fi
1537   gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1538   gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1539   extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1540   # Do not test the mpfr version.  Assume that it is sufficient, since
1541   # it is in the source tree, and the library has not been built yet
1542   # but it would be included on the link line in the version check below
1543   # hence making the test fail.
1544   have_gmp=yes
1545 fi
1546
1547 # Specify a location for gmp
1548 AC_ARG_WITH(gmp-dir,
1549 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1550 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1551 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1552
1553 AC_ARG_WITH(gmp,
1554 [AS_HELP_STRING([--with-gmp=PATH],
1555                 [specify prefix directory for the installed GMP package.
1556                  Equivalent to --with-gmp-include=PATH/include
1557                  plus --with-gmp-lib=PATH/lib])])
1558 AC_ARG_WITH(gmp-include,
1559 [AS_HELP_STRING([--with-gmp-include=PATH],
1560                 [specify directory for installed GMP include files])])
1561 AC_ARG_WITH(gmp-lib,
1562 [AS_HELP_STRING([--with-gmp-lib=PATH],
1563                 [specify directory for the installed GMP library])])
1564
1565
1566 if test "x$with_gmp" != x; then
1567   gmplibs="-L$with_gmp/lib $gmplibs"
1568   gmpinc="-I$with_gmp/include $gmpinc"
1569 fi
1570 if test "x$with_gmp_include" != x; then
1571   gmpinc="-I$with_gmp_include $gmpinc"
1572 fi
1573 if test "x$with_gmp_lib" != x; then
1574   gmplibs="-L$with_gmp_lib $gmplibs"
1575 fi
1576 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1577   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1578   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1579   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1580   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1581   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1582   # Do not test the gmp version.  Assume that it is sufficient, since
1583   # it is in the source tree, and the library has not been built yet
1584   # but it would be included on the link line in the version check below
1585   # hence making the test fail.
1586   have_gmp=yes
1587 fi
1588
1589 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1590   have_gmp=yes
1591   saved_CFLAGS="$CFLAGS"
1592   CFLAGS="$CFLAGS $gmpinc"
1593   # Check for the recommended and required versions of GMP.
1594   AC_MSG_CHECKING([for the correct version of gmp.h])
1595   AC_TRY_COMPILE([#include "gmp.h"],[
1596   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1597   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1598   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1599   choke me
1600   #endif
1601   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1602   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1603   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1604   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1605   choke me
1606   #endif
1607   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1608    [AC_MSG_RESULT([no]); have_gmp=no])
1609
1610   # If we have GMP, check the MPFR version.
1611   if test x"$have_gmp" = xyes; then
1612     # Check for the recommended and required versions of MPFR.
1613     AC_MSG_CHECKING([for the correct version of mpfr.h])
1614     AC_TRY_COMPILE([#include <gmp.h>
1615     #include <mpfr.h>],[
1616     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1617     choke me
1618     #endif
1619     ], [AC_TRY_COMPILE([#include <gmp.h>
1620     #include <mpfr.h>],[
1621     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1622     choke me
1623     #endif
1624     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1625      [AC_MSG_RESULT([no]); have_gmp=no])
1626   fi
1627
1628   # Check for the MPC header version.
1629   if test x"$have_gmp" = xyes ; then
1630     # Check for the recommended and required versions of MPC.
1631     AC_MSG_CHECKING([for the correct version of mpc.h])
1632     AC_TRY_COMPILE([#include <mpc.h>],[
1633     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1634     choke me
1635     #endif
1636     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1637     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1638     choke me
1639     #endif
1640     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1641      [AC_MSG_RESULT([no]); have_gmp=no])
1642   fi
1643
1644   # Now check the MPFR library.
1645   if test x"$have_gmp" = xyes; then
1646     saved_LIBS="$LIBS"
1647     LIBS="$LIBS $gmplibs"
1648     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1649     AC_TRY_LINK([#include <mpc.h>],[
1650     mpfr_t n;
1651     mpfr_t x;
1652     mpc_t c;
1653     int t;
1654     mpfr_init (n);
1655     mpfr_init (x);
1656     mpfr_atan2 (n, n, x, GMP_RNDN);
1657     mpfr_erfc (n, x, GMP_RNDN);
1658     mpfr_subnormalize (x, t, GMP_RNDN);
1659     mpfr_clear(n);
1660     mpfr_clear(x);
1661     mpc_init2 (c, 53);
1662     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1663     mpc_cosh (c, c, MPC_RNDNN);
1664     mpc_pow (c, c, c, MPC_RNDNN);
1665     mpc_acosh (c, c, MPC_RNDNN);
1666     mpc_clear (c);
1667     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1668     LIBS="$saved_LIBS"
1669   fi
1670
1671   CFLAGS="$saved_CFLAGS"
1672
1673 # The library versions listed in the error message below should match
1674 # the HARD-minimums enforced above.
1675   if test x$have_gmp != xyes; then
1676     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1677 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1678 their locations.  Source code for these libraries can be found at
1679 their respective hosting sites as well as at
1680 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1681 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1682 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1683 make sure that you have installed both the libraries and the header
1684 files.  They may be located in separate packages.])
1685   fi
1686 fi
1687
1688 # Flags needed for both GMP, MPFR and/or MPC.
1689 AC_SUBST(gmplibs)
1690 AC_SUBST(gmpinc)
1691 AC_SUBST(extra_mpfr_configure_flags)
1692 AC_SUBST(extra_mpc_gmp_configure_flags)
1693 AC_SUBST(extra_mpc_mpfr_configure_flags)
1694 AC_SUBST(extra_isl_gmp_configure_flags)
1695
1696 # Libraries to use for stage1 or when not bootstrapping.
1697 AC_ARG_WITH(stage1-libs,
1698 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1699 [if test "$withval" = "no" -o "$withval" = "yes"; then
1700    stage1_libs=
1701  else
1702    stage1_libs=$withval
1703  fi],
1704 [stage1_libs=])
1705 AC_SUBST(stage1_libs)
1706
1707 # Whether or not to use -static-libstdc++ and -static-libgcc.  The
1708 # default is yes if gcc is being built; no otherwise.  The reason for
1709 # this default is that gdb is sometimes linked against GNU Source
1710 # Highlight, which is a shared library that uses C++ exceptions.  In
1711 # this case, -static-libstdc++ will cause crashes.
1712 AC_ARG_WITH(static-standard-libraries,
1713 [AS_HELP_STRING([--with-static-standard-libraries],
1714                 [use -static-libstdc++ and -static-libgcc (default=auto)])],
1715 [], [with_static_standard_libraries=auto])
1716 if test "$with_static_standard_libraries" = auto; then
1717   with_static_standard_libraries=$have_compiler
1718 fi
1719
1720 # Linker flags to use for stage1 or when not bootstrapping.
1721 AC_ARG_WITH(stage1-ldflags,
1722 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1723 [if test "$withval" = "no" -o "$withval" = "yes"; then
1724    stage1_ldflags=
1725  else
1726    stage1_ldflags=$withval
1727  fi],
1728 [stage1_ldflags=
1729  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1730  # if supported.  But if the user explicitly specified the libraries to use,
1731  # trust that they are doing what they want.
1732  if test "$with_static_standard_libraries" = yes -a "$stage1_libs" = "" \
1733      -a "$have_static_libs" = yes; then
1734    stage1_ldflags="-static-libstdc++ -static-libgcc"
1735  fi])
1736 AC_SUBST(stage1_ldflags)
1737
1738 # Libraries to use for stage2 and later builds.
1739 AC_ARG_WITH(boot-libs,
1740 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1741 [if test "$withval" = "no" -o "$withval" = "yes"; then
1742    poststage1_libs=
1743  else
1744    poststage1_libs=$withval
1745  fi],
1746 [poststage1_libs=])
1747 AC_SUBST(poststage1_libs)
1748
1749 # Linker flags to use for stage2 and later builds.
1750 AC_ARG_WITH(boot-ldflags,
1751 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1752                 [linker flags for stage2 and later])],
1753 [if test "$withval" = "no" -o "$withval" = "yes"; then
1754    poststage1_ldflags=
1755  else
1756    poststage1_ldflags=$withval
1757  fi],
1758 [poststage1_ldflags=
1759  # In stages 2 and 3, default to linking libstdc++ and libgcc
1760  # statically.  But if the user explicitly specified the libraries to
1761  # use, trust that they are doing what they want.
1762  if test "$poststage1_libs" = ""; then
1763    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1764  fi])
1765 AC_SUBST(poststage1_ldflags)
1766
1767 # GCC GRAPHITE dependency isl.
1768 # Basic setup is inlined here, actual checks are in config/isl.m4
1769
1770 AC_ARG_WITH(isl,
1771   [AS_HELP_STRING(
1772    [--with-isl=PATH],
1773    [Specify prefix directory for the installed isl package.
1774     Equivalent to --with-isl-include=PATH/include
1775     plus --with-isl-lib=PATH/lib])])
1776
1777 # Treat --without-isl as a request to disable
1778 # GRAPHITE support and skip all following checks.
1779 if test "x$with_isl" != "xno"; then
1780   # Check for isl
1781   dnl Provide configure switches and initialize islinc & isllibs
1782   dnl with user input.
1783   ISL_INIT_FLAGS
1784   dnl The versions of isl that work for Graphite
1785   ISL_CHECK_VERSION()
1786   dnl Only execute fail-action, if isl has been requested.
1787   ISL_IF_FAILED([
1788     AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1789 fi
1790
1791 # If the isl check failed, disable builds of in-tree variant of isl
1792 if test "x$with_isl" = xno ||
1793    test "x$gcc_cv_isl" = xno; then
1794   noconfigdirs="$noconfigdirs isl"
1795   islinc=
1796 fi
1797
1798 AC_SUBST(isllibs)
1799 AC_SUBST(islinc)
1800
1801 # Check for LTO support.
1802 AC_ARG_ENABLE(lto,
1803 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1804 enable_lto=$enableval,
1805 enable_lto=yes; default_enable_lto=yes)
1806
1807 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1808   build_lto_plugin=yes
1809 ],[if test x"$default_enable_lto" = x"yes" ; then
1810     case $target in
1811       *-apple-darwin[[912]]* | *-cygwin* | *-mingw* | *djgpp*) ;;
1812       # On other non-ELF platforms, LTO has yet to be validated.
1813       *) enable_lto=no ;;
1814     esac
1815   else
1816   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1817   # It would also be nice to check the binutils support, but we don't
1818   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1819   # warn during gcc/ subconfigure; unless you're bootstrapping with
1820   # -flto it won't be needed until after installation anyway.
1821     case $target in
1822       *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1823       *) if test x"$enable_lto" = x"yes"; then
1824         AC_MSG_ERROR([LTO support is not enabled for this target.])
1825         fi
1826       ;;
1827     esac
1828   fi
1829   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1830   # Build it unless LTO was explicitly disabled.
1831   case $target in
1832     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1833     *) ;;
1834   esac
1835 ])
1836
1837 AC_ARG_ENABLE(linker-plugin-configure-flags,
1838   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1839     [additional flags for configuring linker plugins @<:@none@:>@])],
1840   extra_linker_plugin_configure_flags=$enableval,
1841   extra_linker_plugin_configure_flags=)
1842 AC_SUBST(extra_linker_plugin_configure_flags)
1843 AC_ARG_ENABLE(linker-plugin-flags,
1844   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1845     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1846   extra_linker_plugin_flags=$enableval,
1847   extra_linker_plugin_flags=)
1848 AC_SUBST(extra_linker_plugin_flags)
1849
1850 # Enable --enable-host-shared.
1851 # Checked early to determine whether jit is an 'all' language
1852 AC_ARG_ENABLE(host-shared,
1853 [AS_HELP_STRING([--enable-host-shared],
1854                 [build host code as shared libraries])],
1855 [host_shared=$enableval], [host_shared=no])
1856 AC_SUBST(host_shared)
1857
1858 # By default, C and C++ are the only stage 1 languages.
1859 stage1_languages=,c,
1860
1861 # Target libraries that we bootstrap.
1862 bootstrap_target_libs=,target-libgcc,
1863
1864 # Figure out what language subdirectories are present.
1865 # Look if the user specified --enable-languages="..."; if not, use
1866 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1867 # go away some day.
1868 # NB:  embedded tabs in this IF block -- do not untabify
1869 if test -d ${srcdir}/gcc; then
1870   if test x"${enable_languages+set}" != xset; then
1871     if test x"${LANGUAGES+set}" = xset; then
1872       enable_languages="${LANGUAGES}"
1873         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1874     else
1875       enable_languages=default
1876     fi
1877   else
1878     if test x"${enable_languages}" = x ||
1879        test x"${enable_languages}" = xyes;
1880        then
1881       echo configure.ac: --enable-languages needs at least one language argument 1>&2
1882       exit 1
1883     fi
1884   fi
1885   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1886
1887   # 'f95' is the old name for the 'fortran' language. We issue a warning
1888   # and make the substitution.
1889   case ,${enable_languages}, in
1890     *,f95,*)
1891       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1892       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1893       ;;
1894   esac
1895
1896   # If bootstrapping, C++ must be enabled.
1897   case ",$enable_languages,:$enable_bootstrap" in
1898     *,c++,*:*) ;;
1899     *:yes)
1900       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1901         enable_languages="${enable_languages},c++"
1902       else
1903         AC_MSG_ERROR([bootstrapping requires c++ sources])
1904       fi
1905       ;;
1906   esac
1907
1908   # First scan to see if an enabled language requires some other language.
1909   # We assume that a given config-lang.in will list all the language
1910   # front ends it requires, even if some are required indirectly.
1911   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1912     case ${lang_frag} in
1913       ..) ;;
1914       # The odd quoting in the next line works around
1915       # an apparent bug in bash 1.12 on linux.
1916       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1917       *)
1918         # From the config-lang.in, get $language, $lang_requires, and
1919         # $lang_requires_boot_languages.
1920         language=
1921         lang_requires=
1922         lang_requires_boot_languages=
1923         # set srcdir during sourcing lang_frag to the gcc dir.
1924         # Sadly overriding srcdir on the . line doesn't work in plain sh as it
1925         # polutes this shell
1926         saved_srcdir=${srcdir}
1927         srcdir=${srcdir}/gcc . ${lang_frag}
1928         srcdir=${saved_srcdir}
1929         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1930           case ,${enable_languages}, in
1931             *,$other,*) ;;
1932             *,default,*) ;;
1933             *,all,*) ;;
1934             *,$language,*)
1935               echo " \`$other' language required by \`$language'; enabling" 1>&2
1936               enable_languages="${enable_languages},${other}"
1937               ;;
1938           esac
1939         done
1940         for other in ${lang_requires_boot_languages} ; do
1941           if test "$other" != "c"; then
1942             case ,${enable_stage1_languages}, in
1943               *,$other,*) ;;
1944               *,default,*) ;;
1945               *,all,*) ;;
1946               *)
1947                 case ,${enable_languages}, in
1948                   *,$language,*)
1949                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1950                     enable_stage1_languages="$enable_stage1_languages,${other}"
1951                     ;;
1952                 esac
1953                 ;;
1954             esac
1955           fi
1956         done
1957         ;;
1958     esac
1959   done
1960
1961   new_enable_languages=,c,
1962
1963   # If LTO is enabled, add the LTO front end.
1964   if test "$enable_lto" = "yes" ; then
1965     case ,${enable_languages}, in
1966       *,lto,*) ;;
1967       *) enable_languages="${enable_languages},lto" ;;
1968     esac
1969     if test "${build_lto_plugin}" = "yes" ; then
1970       configdirs="$configdirs lto-plugin"
1971     fi
1972   fi
1973
1974   # If we're building an offloading compiler, add the LTO front end.
1975   if test x"$enable_as_accelerator_for" != x ; then
1976     case ,${enable_languages}, in
1977       *,lto,*) ;;
1978       *) enable_languages="${enable_languages},lto" ;;
1979     esac
1980   fi
1981
1982   missing_languages=`echo ",$enable_languages," | sed -e s/,default,/,/ -e s/,all,/,/ -e s/,c,/,/ `
1983   potential_languages=,c,
1984
1985   enabled_target_libs=
1986   disabled_target_libs=
1987
1988   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1989     case ${lang_frag} in
1990       ..) ;;
1991       # The odd quoting in the next line works around
1992       # an apparent bug in bash 1.12 on linux.
1993       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1994       *)
1995         # From the config-lang.in, get $language, $target_libs,
1996         # $lang_dirs, $boot_language, and $build_by_default
1997         language=
1998         target_libs=
1999         lang_dirs=
2000         subdir_requires=
2001         boot_language=no
2002         build_by_default=yes
2003         # set srcdir during sourcing.  See above about save & restore
2004         saved_srcdir=${srcdir}
2005         srcdir=${srcdir}/gcc . ${lang_frag}
2006         srcdir=${saved_srcdir}
2007         if test x${language} = x; then
2008           echo "${lang_frag} doesn't set \$language." 1>&2
2009           exit 1
2010         fi
2011
2012         if test "$language" = "c++"; then
2013           boot_language=yes
2014         fi
2015
2016         add_this_lang=no
2017         # C is always enabled, so no need to add it again
2018         if test "$language" != "c"; then
2019           case ,${enable_languages}, in
2020             *,${language},*)
2021               # Language was explicitly selected; include it
2022               add_this_lang=yes
2023               ;;
2024             *,all,*)
2025               # All languages are enabled
2026               add_this_lang=all
2027               ;;
2028             *,default,*)
2029               # 'default' was selected, select it if it is a default language
2030               add_this_lang=${build_by_default}
2031               ;;
2032           esac
2033         fi
2034
2035         # Disable languages that need other directories if these aren't available.
2036         for i in $subdir_requires; do
2037           test -f "$srcdir/gcc/$i/config-lang.in" && continue
2038           case ${add_this_lang} in
2039             yes)
2040               # Specifically requested language; tell them.
2041               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
2042               ;;
2043             all)
2044               AC_MSG_WARN([The gcc/$i directory contains parts of $language but is missing])
2045               add_this_lang=unsupported
2046               ;;
2047             *)
2048               # Silently disable.
2049               add_this_lang=unsupported
2050               ;;
2051           esac
2052         done
2053
2054         # Disable Ada if no preexisting GNAT is available.
2055         case ${add_this_lang}:${language}:${have_gnat} in
2056           yes:ada:no)
2057             # Specifically requested language; tell them.
2058             AC_MSG_ERROR([GNAT is required to build $language])
2059             ;;
2060           all:ada:no)
2061             AC_MSG_WARN([GNAT is required to build $language])
2062             add_this_lang=unsupported
2063             ;;
2064           *:ada:no)
2065             # Silently disable.
2066             add_this_lang=unsupported
2067             ;;
2068         esac
2069
2070         # Disable jit if -enable-host-shared not specified
2071         case ${add_this_lang}:${language}:${host_shared} in
2072           yes:jit:no)
2073             # PR jit/64780: explicitly specify --enable-host-shared
2074             AC_MSG_ERROR([
2075 Enabling language "jit" requires --enable-host-shared.
2076
2077 --enable-host-shared typically slows the rest of the compiler down by
2078 a few %, so you must explicitly enable it.
2079
2080 If you want to build both the jit and the regular compiler, it is often
2081 best to do this via two separate configure/builds, in separate
2082 directories, to avoid imposing the performance cost of
2083 --enable-host-shared on the regular compiler.])
2084             ;;
2085           all:jit:no)
2086             AC_MSG_WARN([--enable-host-shared required to build $language])
2087             add_this_lang=unsupported
2088             ;;
2089           *:jit:no)
2090             # Silently disable.
2091             add_this_lang=unsupported
2092             ;;
2093         esac
2094
2095         # Disable a language that is unsupported by the target.
2096         case "${add_this_lang}: $unsupported_languages " in
2097           no:*) ;;
2098           unsupported:*) ;;
2099           *:*" $language "*)
2100             AC_MSG_WARN([${language} not supported for this target])
2101             add_this_lang=unsupported
2102             ;;
2103         esac
2104
2105         case $add_this_lang in
2106           unsupported)
2107             # Remove language-dependent dirs.
2108             disabled_target_libs="$disabled_target_libs $target_libs"
2109             noconfigdirs="$noconfigdirs $lang_dirs"
2110             ;;
2111           no)
2112             # Remove language-dependent dirs; still show language as supported.
2113             disabled_target_libs="$disabled_target_libs $target_libs"
2114             noconfigdirs="$noconfigdirs $lang_dirs"
2115             potential_languages="${potential_languages}${language},"
2116             ;;
2117           all|yes)
2118             new_enable_languages="${new_enable_languages}${language},"
2119             potential_languages="${potential_languages}${language},"
2120             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2121             enabled_target_libs="$enabled_target_libs $target_libs"
2122             case "${boot_language}:,$enable_stage1_languages," in
2123               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2124                 # Add to (comma-separated) list of stage 1 languages.
2125                 case ",$stage1_languages," in
2126                   *,$language,* | ,yes, | ,all,) ;;
2127                   *) stage1_languages="${stage1_languages}${language}," ;;
2128                 esac
2129                 # We need to bootstrap any supporting libraries.
2130                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2131                 ;;
2132             esac
2133             ;;
2134         esac
2135         ;;
2136     esac
2137   done
2138
2139   # Add target libraries which are only needed for disabled languages
2140   # to noconfigdirs.
2141   if test -n "$disabled_target_libs"; then
2142     for dir in $disabled_target_libs; do
2143       case " $enabled_target_libs " in
2144       *" ${dir} "*) ;;
2145       *) noconfigdirs="$noconfigdirs $dir" ;;
2146       esac
2147     done
2148   fi
2149
2150   AC_ARG_ENABLE(stage1-languages,
2151   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2152                   [choose additional languages to build during
2153                   stage1.  Mostly useful for compiler development])],
2154   [case ,${enable_stage1_languages}, in
2155     ,no,|,,)
2156       # Set it to something that will have no effect in the loop below
2157       enable_stage1_languages=c ;;
2158     ,yes,)
2159       enable_stage1_languages=`echo $new_enable_languages | \
2160         sed -e "s/^,//" -e "s/,$//" ` ;;
2161     *,all,*)
2162       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2163         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2164   esac
2165
2166   # Add "good" languages from enable_stage1_languages to stage1_languages,
2167   # while "bad" languages go in missing_languages.  Leave no duplicates.
2168   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2169     case $potential_languages in
2170       *,$i,*)
2171         case $stage1_languages in
2172           *,$i,*) ;;
2173           *) stage1_languages="$stage1_languages$i," ;;
2174         esac ;;
2175       *)
2176         case $missing_languages in
2177           *,$i,*) ;;
2178           *) missing_languages="$missing_languages$i," ;;
2179         esac ;;
2180      esac
2181   done])
2182
2183   # Remove leading/trailing commas that were added for simplicity
2184   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2185   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2186   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2187   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2188
2189   if test "x$missing_languages" != x; then
2190     AC_MSG_ERROR([
2191 The following requested languages could not be built: ${missing_languages}
2192 Supported languages are: ${potential_languages}])
2193   fi
2194   if test "x$new_enable_languages" != "x$enable_languages"; then
2195     echo The following languages will be built: ${new_enable_languages}
2196     enable_languages="$new_enable_languages"
2197   fi
2198
2199   AC_SUBST(stage1_languages)
2200   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2201 fi
2202
2203 # Handle --disable-<component> generically.
2204 for dir in $configdirs $build_configdirs $target_configdirs ; do
2205   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2206   varname=`echo $dirname | sed -e s/+/_/g`
2207   if eval test x\${enable_${varname}} "=" xno ; then
2208     noconfigdirs="$noconfigdirs $dir"
2209   fi
2210 done
2211
2212 # Check for Boehm's garbage collector
2213 AC_ARG_ENABLE(objc-gc,
2214 [AS_HELP_STRING([--enable-objc-gc],
2215                 [enable use of Boehm's garbage collector with the
2216                  GNU Objective-C runtime])])
2217 AC_ARG_WITH([target-bdw-gc],
2218 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
2219                 [specify prefix directory for installed bdw-gc package.
2220                  Equivalent to --with-target-bdw-gc-include=PATH/include
2221                  plus --with-target-bdw-gc-lib=PATH/lib])])
2222 AC_ARG_WITH([target-bdw-gc-include],
2223 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
2224                 [specify directories for installed bdw-gc include files])])
2225 AC_ARG_WITH([target-bdw-gc-lib],
2226 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
2227                 [specify directories for installed bdw-gc library])])
2228
2229 case ,${enable_languages},:${enable_objc_gc} in *,objc,*:yes|*,objc,*:auto)
2230   AC_MSG_CHECKING([for bdw garbage collector])
2231   if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
2232     dnl no bdw-gw options, assume default locations
2233     AC_MSG_RESULT([using bdw-gc in default locations])
2234   else
2235     dnl bdw-gw options, first error checking, complete checking in libobjc
2236     if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
2237       AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
2238     elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
2239       AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
2240     else
2241       AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
2242     fi
2243   fi
2244 esac
2245
2246 # Disable libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2247 case ,${enable_languages}, in
2248   *,c++,*)
2249     # Disable libitm, libsanitizer if we're not building libstdc++
2250     case "${noconfigdirs}" in
2251       *target-libstdc++-v3*)
2252         noconfigdirs="$noconfigdirs target-libitm target-libsanitizer"
2253         ;;
2254       *) ;;
2255     esac
2256     ;;
2257   *)
2258     noconfigdirs="$noconfigdirs target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2259     ;;
2260 esac
2261
2262 # If gcc/ is not in the source tree then we'll not be building a
2263 # target compiler, assume in that case we don't want to build any
2264 # target libraries or tools.
2265 #
2266 # This was added primarily for the benefit for binutils-gdb who reuse
2267 # this configure script, but don't always have target tools available.
2268 if test ! -d ${srcdir}/gcc; then
2269    skipdirs="${skipdirs} ${target_configdirs}"
2270 fi
2271
2272 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2273 # $build_configdirs and $target_configdirs.
2274 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2275
2276 notsupp=""
2277 for dir in . $skipdirs $noconfigdirs ; do
2278   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2279   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2280     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2281     if test -r $srcdir/$dirname/configure ; then
2282       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2283         true
2284       else
2285         notsupp="$notsupp $dir"
2286       fi
2287     fi
2288   fi
2289   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2290     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2291     if test -r $srcdir/$dirname/configure ; then
2292       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2293         true
2294       else
2295         notsupp="$notsupp $dir"
2296       fi
2297     fi
2298   fi
2299   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2300     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2301     if test -r $srcdir/$dirname/configure ; then
2302       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2303         true
2304       else
2305         notsupp="$notsupp $dir"
2306       fi
2307     fi
2308   fi
2309 done
2310
2311 # Quietly strip out all directories which aren't configurable in this tree.
2312 # This relies on all configurable subdirectories being autoconfiscated, which
2313 # is now the case.
2314 build_configdirs_all="$build_configdirs"
2315 build_configdirs=
2316 for i in ${build_configdirs_all} ; do
2317   j=`echo $i | sed -e s/build-//g`
2318   if test -f ${srcdir}/$j/configure ; then
2319     build_configdirs="${build_configdirs} $i"
2320   fi
2321 done
2322
2323 configdirs_all="$configdirs"
2324 configdirs=
2325 for i in ${configdirs_all} ; do
2326   if test -f ${srcdir}/$i/configure ; then
2327     configdirs="${configdirs} $i"
2328   fi
2329 done
2330
2331 target_configdirs_all="$target_configdirs"
2332 target_configdirs=
2333 for i in ${target_configdirs_all} ; do
2334   j=`echo $i | sed -e s/target-//g`
2335   if test -f ${srcdir}/$j/configure ; then
2336     target_configdirs="${target_configdirs} $i"
2337   fi
2338 done
2339
2340 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2341 # so we have to add it after the preceding checks.
2342 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2343 then
2344   case " $configdirs " in
2345     *" libiberty "*)
2346       # If we can build libiberty, we can also build libiberty-linker-plugin.
2347       configdirs="$configdirs libiberty-linker-plugin"
2348       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2349         --with-libiberty=../libiberty-linker-plugin";;
2350     *)
2351       AC_MSG_ERROR([libiberty missing]);;
2352   esac
2353 fi
2354
2355 # Sometimes we have special requirements for the host libiberty.
2356 extra_host_libiberty_configure_flags=
2357 case " $configdirs " in
2358   *" lto-plugin "* | *" libcc1 "* | *" gdbserver "*)
2359     # When these are to be built as shared libraries, the same applies to
2360     # libiberty.
2361     extra_host_libiberty_configure_flags=--enable-shared
2362     ;;
2363 esac
2364 AC_SUBST(extra_host_libiberty_configure_flags)
2365
2366 # Sometimes we have special requirements for the host zlib.
2367 extra_host_zlib_configure_flags=
2368 case " $configdirs " in
2369   *" bfd "*)
2370     # When bfd is to be built as a shared library, the same applies to
2371     # zlib.
2372     if test "$enable_shared" = "yes"; then
2373       extra_host_zlib_configure_flags=--enable-host-shared
2374     fi
2375     ;;
2376 esac
2377 AC_SUBST(extra_host_zlib_configure_flags)
2378
2379 # Produce a warning message for the subdirs we can't configure.
2380 # This isn't especially interesting in the Cygnus tree, but in the individual
2381 # FSF releases, it's important to let people know when their machine isn't
2382 # supported by the one or two programs in a package.
2383
2384 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2385   # If $appdirs is non-empty, at least one of those directories must still
2386   # be configured, or we error out.  (E.g., if the gas release supports a
2387   # specified target in some subdirs but not the gas subdir, we shouldn't
2388   # pretend that all is well.)
2389   if test -n "$appdirs" ; then
2390     for dir in $appdirs ; do
2391       if test -r $dir/Makefile.in ; then
2392         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2393           appdirs=""
2394           break
2395         fi
2396         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2397           appdirs=""
2398           break
2399         fi
2400       fi
2401     done
2402     if test -n "$appdirs" ; then
2403       echo "*** This configuration is not supported by this package." 1>&2
2404       exit 1
2405     fi
2406   fi
2407   # Okay, some application will build, or we don't care to check.  Still
2408   # notify of subdirs not getting built.
2409   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2410   echo "    ${notsupp}" 1>&2
2411   echo "    (Any other directories should still work fine.)" 1>&2
2412 fi
2413
2414 case "$host" in
2415   *msdosdjgpp*)
2416     enable_gdbtk=no ;;
2417 esac
2418
2419 # To find our prefix, in gcc_cv_tool_prefix.
2420 ACX_TOOL_DIRS
2421
2422 copy_dirs=
2423
2424 AC_ARG_WITH([build-sysroot],
2425   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2426                   [use sysroot as the system root during the build])],
2427   [if test x"$withval" != x ; then
2428      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2429    fi],
2430   [SYSROOT_CFLAGS_FOR_TARGET=])
2431 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2432
2433 AC_ARG_WITH([debug-prefix-map],
2434   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2435                   [map A to B, C to D ... in debug information])],
2436   [if test x"$withval" != x; then
2437      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2438      for debug_map in $withval; do
2439        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2440      done
2441    fi],
2442   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2443 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2444
2445 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2446 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2447 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2448 # We want to ensure that TARGET libraries (which we know are built with
2449 # gcc) are built with "-O2 -g", so include those options when setting
2450 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2451 if test "x$CFLAGS_FOR_TARGET" = x; then
2452   if test "x${is_cross_compiler}" = xyes; then
2453     CFLAGS_FOR_TARGET="-g -O2"
2454   else
2455     CFLAGS_FOR_TARGET=$CFLAGS
2456     case " $CFLAGS " in
2457       *" -O2 "*) ;;
2458       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2459     esac
2460     case " $CFLAGS " in
2461       *" -g "* | *" -g3 "*) ;;
2462       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2463     esac
2464   fi
2465 fi
2466 AC_SUBST(CFLAGS_FOR_TARGET)
2467
2468 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2469   if test "x${is_cross_compiler}" = xyes; then
2470     CXXFLAGS_FOR_TARGET="-g -O2"
2471   else
2472     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2473     case " $CXXFLAGS " in
2474       *" -O2 "*) ;;
2475       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2476     esac
2477     case " $CXXFLAGS " in
2478       *" -g "* | *" -g3 "*) ;;
2479       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2480     esac
2481   fi
2482 fi
2483 AC_SUBST(CXXFLAGS_FOR_TARGET)
2484
2485 AC_SUBST(LDFLAGS_FOR_TARGET)
2486
2487 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2488 # the named directory are copied to $(tooldir)/sys-include.
2489 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2490   if test x${is_cross_compiler} = xno ; then
2491     echo 1>&2 '***' --with-headers is only supported when cross compiling
2492     exit 1
2493   fi
2494   if test x"${with_headers}" != xyes ; then
2495     x=${gcc_cv_tool_prefix}
2496     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2497   fi
2498 fi
2499
2500 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2501 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2502 # are permitted.
2503 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2504   if test x${is_cross_compiler} = xno ; then
2505     echo 1>&2 '***' --with-libs is only supported when cross compiling
2506     exit 1
2507   fi
2508   if test x"${with_libs}" != xyes ; then
2509     # Copy the libraries in reverse order, so that files in the first named
2510     # library override files in subsequent libraries.
2511     x=${gcc_cv_tool_prefix}
2512     for l in ${with_libs}; do
2513       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2514     done
2515   fi
2516 fi
2517
2518 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2519 #
2520 # This is done by determining whether or not the appropriate directory
2521 # is available, and by checking whether or not specific configurations
2522 # have requested that this magic not happen.
2523 #
2524 # The command line options always override the explicit settings in
2525 # configure.ac, and the settings in configure.ac override this magic.
2526 #
2527 # If the default for a toolchain is to use GNU as and ld, and you don't
2528 # want to do that, then you should use the --without-gnu-as and
2529 # --without-gnu-ld options for the configure script.  Similarly, if
2530 # the default is to use the included zlib and you don't want to do that,
2531 # you should use the --with-system-zlib option for the configure script.
2532
2533 if test x${use_gnu_as} = x &&
2534    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2535   with_gnu_as=yes
2536   extra_host_args="$extra_host_args --with-gnu-as"
2537 fi
2538
2539 if test x${use_gnu_ld} = x &&
2540    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2541   with_gnu_ld=yes
2542   extra_host_args="$extra_host_args --with-gnu-ld"
2543 fi
2544
2545 if test x${use_included_zlib} = x &&
2546    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2547   :
2548 else
2549   with_system_zlib=yes
2550   extra_host_args="$extra_host_args --with-system-zlib"
2551 fi
2552
2553 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2554 # can detect this case.
2555
2556 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2557   with_newlib=yes
2558   extra_host_args="$extra_host_args --with-newlib"
2559 fi
2560
2561 # Handle ${copy_dirs}
2562 set fnord ${copy_dirs}
2563 shift
2564 while test $# != 0 ; do
2565   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2566     :
2567   else
2568     echo Copying $1 to $2
2569
2570     # Use the install script to create the directory and all required
2571     # parent directories.
2572     if test -d $2 ; then
2573       :
2574     else
2575       echo >config.temp
2576       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2577     fi
2578
2579     # Copy the directory, assuming we have tar.
2580     # FIXME: Should we use B in the second tar?  Not all systems support it.
2581     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2582
2583     # It is the responsibility of the user to correctly adjust all
2584     # symlinks.  If somebody can figure out how to handle them correctly
2585     # here, feel free to add the code.
2586
2587     echo $1 > $2/COPIED
2588   fi
2589   shift; shift
2590 done
2591
2592 # Determine a target-dependent exec_prefix that the installed
2593 # gcc will search in.  Keep this list sorted by triplet, with
2594 # the *-*-osname triplets last.
2595 md_exec_prefix=
2596 case "${target}" in
2597   i[[34567]]86-pc-msdosdjgpp*)
2598     md_exec_prefix=/dev/env/DJDIR/bin
2599     ;;
2600   *-*-hpux* | \
2601   *-*-nto-qnx* | \
2602   *-*-solaris2*)
2603     md_exec_prefix=/usr/ccs/bin
2604     ;;
2605 esac
2606
2607 extra_arflags_for_target=
2608 extra_nmflags_for_target=
2609 extra_ranlibflags_for_target=
2610 target_makefile_frag=/dev/null
2611 case "${target}" in
2612   spu-*-*)
2613     target_makefile_frag="config/mt-spu"
2614     ;;
2615   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2616     target_makefile_frag="config/mt-sde"
2617     ;;
2618   mipsisa*-*-elfoabi*)
2619     target_makefile_frag="config/mt-mips-elfoabi"
2620     ;;
2621   mips*-*-*linux* | mips*-*-gnu*)
2622     target_makefile_frag="config/mt-mips-gnu"
2623     ;;
2624   nios2-*-elf*)
2625     target_makefile_frag="config/mt-nios2-elf"
2626     ;;
2627   *-*-linux-android*)
2628     target_makefile_frag="config/mt-android"
2629     ;;
2630   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2631     target_makefile_frag="config/mt-gnu"
2632     ;;
2633   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2634     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2635     # commands to handle both 32-bit and 64-bit objects.  These flags are
2636     # harmless if we're using GNU nm or ar.
2637     extra_arflags_for_target=" -X32_64"
2638     extra_nmflags_for_target=" -B -X32_64"
2639     ;;
2640 esac
2641
2642 alphaieee_frag=/dev/null
2643 case $target in
2644   alpha*-*-*)
2645     # This just makes sure to use the -mieee option to build target libs.
2646     # This should probably be set individually by each library.
2647     alphaieee_frag="config/mt-alphaieee"
2648     ;;
2649 esac
2650
2651 # If --enable-target-optspace always use -Os instead of -O2 to build
2652 # the target libraries, similarly if it is not specified, use -Os
2653 # on selected platforms.
2654 ospace_frag=/dev/null
2655 case "${enable_target_optspace}:${target}" in
2656   yes:*)
2657     ospace_frag="config/mt-ospace"
2658     ;;
2659   :d30v-*)
2660     ospace_frag="config/mt-d30v"
2661     ;;
2662   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2663     ospace_frag="config/mt-ospace"
2664     ;;
2665   no:* | :*)
2666     ;;
2667   *)
2668     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2669     ;;
2670 esac
2671
2672 # Some systems (e.g., one of the i386-aix systems the gas testers are
2673 # using) don't handle "\$" correctly, so don't use it here.
2674 tooldir='${exec_prefix}'/${target_noncanonical}
2675 build_tooldir=${tooldir}
2676
2677 # Create a .gdbinit file which runs the one in srcdir
2678 # and tells GDB to look there for source files.
2679
2680 if test -r ${srcdir}/.gdbinit ; then
2681   case ${srcdir} in
2682     .) ;;
2683     *) cat > ./.gdbinit <<EOF
2684 # ${NO_EDIT}
2685 dir ${srcdir}
2686 dir .
2687 source ${srcdir}/.gdbinit
2688 EOF
2689     ;;
2690   esac
2691 fi
2692
2693 # Make sure that the compiler is able to generate an executable.  If it
2694 # can't, we are probably in trouble.  We don't care whether we can run the
2695 # executable--we might be using a cross compiler--we only care whether it
2696 # can be created.  At this point the main configure script has set CC.
2697 we_are_ok=no
2698 echo "int main () { return 0; }" > conftest.c
2699 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2700 if test $? = 0 ; then
2701   if test -s conftest || test -s conftest.exe ; then
2702     we_are_ok=yes
2703   fi
2704 fi
2705 case $we_are_ok in
2706   no)
2707     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2708     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2709     rm -f conftest*
2710     exit 1
2711     ;;
2712 esac
2713 rm -f conftest*
2714
2715 # Decide which environment variable is used to find dynamic libraries.
2716 case "${host}" in
2717   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2718   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2719   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2720   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2721 esac
2722
2723 # On systems where the dynamic library environment variable is PATH,
2724 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2725 # built executables to PATH.
2726 if test "$RPATH_ENVVAR" = PATH; then
2727   GCC_SHLIB_SUBDIR=/shlib
2728 else
2729   GCC_SHLIB_SUBDIR=
2730 fi
2731
2732 # Adjust the toplevel makefile according to whether bootstrap was selected.
2733 case $enable_bootstrap in
2734   yes)
2735     bootstrap_suffix=bootstrap
2736     BUILD_CONFIG=bootstrap-debug
2737     ;;
2738   no)
2739     bootstrap_suffix=no-bootstrap
2740     BUILD_CONFIG=
2741     ;;
2742 esac
2743
2744 AC_MSG_CHECKING(for default BUILD_CONFIG)
2745
2746 AC_ARG_WITH([build-config],
2747   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2748                   [use config/NAME.mk build configuration])],
2749   [case $with_build_config in
2750    yes) with_build_config= ;;
2751    no) with_build_config= BUILD_CONFIG= ;;
2752    esac])
2753
2754 if test "x${with_build_config}" != x; then
2755   BUILD_CONFIG=$with_build_config
2756 else
2757   case $BUILD_CONFIG in
2758   bootstrap-debug)
2759     if echo "int f (void) { return 0; }" > conftest.c &&
2760        ${CC} -c conftest.c &&
2761        mv conftest.o conftest.o.g0 &&
2762        ${CC} -c -g conftest.c &&
2763        mv conftest.o conftest.o.g &&
2764        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2765       :
2766     else
2767       BUILD_CONFIG=
2768     fi
2769     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2770     ;;
2771   esac
2772 fi
2773 AC_MSG_RESULT($BUILD_CONFIG)
2774 AC_SUBST(BUILD_CONFIG)
2775
2776 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2777 AC_MSG_CHECKING([for --enable-vtable-verify])
2778 AC_ARG_ENABLE(vtable-verify,
2779 [AS_HELP_STRING([--enable-vtable-verify],
2780                 [Enable vtable verification feature])],
2781 [case "$enableval" in
2782  yes) enable_vtable_verify=yes ;;
2783  no)  enable_vtable_verify=no ;;
2784  *)   enable_vtable_verify=no;;
2785  esac],
2786 [enable_vtable_verify=no])
2787 AC_MSG_RESULT($enable_vtable_verify)
2788
2789 # Record target_configdirs and the configure arguments for target and
2790 # build configuration in Makefile.
2791 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2792 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2793 bootstrap_fixincludes=no
2794
2795 # If we are building libgomp, bootstrap it.
2796 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2797   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2798 fi
2799
2800 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2801 # or bootstrap-ubsan, bootstrap it.
2802 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2803   case "$BUILD_CONFIG" in
2804     *bootstrap-asan* | *bootstrap-ubsan* )
2805       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2806       bootstrap_fixincludes=yes
2807       ;;
2808   esac
2809 fi
2810
2811 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2812 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2813    test "$enable_vtable_verify" != no; then
2814   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2815 fi
2816
2817 # Determine whether gdb needs tk/tcl or not.
2818 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2819 # and in that case we want gdb to be built without tk.  Ugh!
2820 # In fact I believe gdb is the *only* package directly dependent on tk,
2821 # so we should be able to put the 'maybe's in unconditionally and
2822 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2823 # 100% sure that that's safe though.
2824
2825 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2826 case "$enable_gdbtk" in
2827   no)
2828     GDB_TK="" ;;
2829   yes)
2830     GDB_TK="${gdb_tk}" ;;
2831   *)
2832     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2833     # distro.  Eventually someone will fix this and move Insight, nee
2834     # gdbtk to a separate directory.
2835     if test -d ${srcdir}/gdb/gdbtk ; then
2836       GDB_TK="${gdb_tk}"
2837     else
2838       GDB_TK=""
2839     fi
2840     ;;
2841 esac
2842 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2843 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2844
2845 # gdb and gdbserver depend on gnulib and gdbsupport, but as nothing
2846 # else does, only include them if one of these is built.  The Makefile
2847 # provides the ordering, so it's enough here to add to the list.
2848 case " ${configdirs} " in
2849   *\ gdb\ *)
2850     configdirs="${configdirs} gnulib gdbsupport"
2851     ;;
2852   *\ gdbserver\ *)
2853     configdirs="${configdirs} gnulib gdbsupport"
2854     ;;
2855   *\ sim\ *)
2856     configdirs="${configdirs} gnulib"
2857     ;;
2858 esac
2859
2860 # Strip out unwanted targets.
2861
2862 # While at that, we remove Makefiles if we were started for recursive
2863 # configuration, so that the top-level Makefile reconfigures them,
2864 # like we used to do when configure itself was recursive.
2865
2866 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2867 # but now we're fixing up the Makefile ourselves with the additional
2868 # commands passed to AC_CONFIG_FILES.  Use separate variables
2869 # extrasub-{build,host,target} not because there is any reason to split
2870 # the substitutions up that way, but only to remain below the limit of
2871 # 99 commands in a script, for HP-UX sed.
2872
2873 # Do not nest @if/@endif or @unless/@endunless pairs, because
2874 # configure will not warn you at all.
2875
2876 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2877   yes:yes:*\ gold\ *:*,c++,*) ;;
2878   yes:yes:*\ gold\ *:*)
2879     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2880     ;;
2881 esac
2882
2883 extrasub_build=
2884 for module in ${build_configdirs} ; do
2885   if test -z "${no_recursion}" \
2886      && test -f ${build_subdir}/${module}/Makefile; then
2887     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2888     rm -f ${build_subdir}/${module}/Makefile
2889   fi
2890   extrasub_build="$extrasub_build
2891 /^@if build-$module\$/d
2892 /^@endif build-$module\$/d
2893 /^@unless build-$module\$/,/^@endunless build-$module\$/d
2894 /^@if build-$module-$bootstrap_suffix\$/d
2895 /^@endif build-$module-$bootstrap_suffix\$/d
2896 /^@unless build-$module-$bootstrap_suffix\$/,/^@endunless build-$module-$bootstrap_suffix\$/d"
2897 done
2898 extrasub_host=
2899 for module in ${configdirs} ; do
2900   if test -z "${no_recursion}"; then
2901     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2902       if test -f ${file}; then
2903         echo 1>&2 "*** removing ${file} to force reconfigure"
2904         rm -f ${file}
2905       fi
2906     done
2907   fi
2908   case ${module},${bootstrap_fixincludes} in
2909     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2910     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2911   esac
2912   extrasub_host="$extrasub_host
2913 /^@if $module\$/d
2914 /^@endif $module\$/d
2915 /^@unless $module\$/,/^@endunless $module\$/d
2916 /^@if $module-$host_bootstrap_suffix\$/d
2917 /^@endif $module-$host_bootstrap_suffix\$/d
2918 /^@unless $module-$host_bootstrap_suffix\$/,/^@endunless $module-$host_bootstrap_suffix\$/d"
2919 done
2920 extrasub_target=
2921 for module in ${target_configdirs} ; do
2922   if test -z "${no_recursion}" \
2923      && test -f ${target_subdir}/${module}/Makefile; then
2924     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2925     rm -f ${target_subdir}/${module}/Makefile
2926   fi
2927
2928   # We only bootstrap target libraries listed in bootstrap_target_libs.
2929   case $bootstrap_target_libs in
2930     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2931     *) target_bootstrap_suffix=no-bootstrap ;;
2932   esac
2933
2934   extrasub_target="$extrasub_target
2935 /^@if target-$module\$/d
2936 /^@endif target-$module\$/d
2937 /^@unless target-$module\$/,/^@endunless target-$module\$/d
2938 /^@if target-$module-$target_bootstrap_suffix\$/d
2939 /^@endif target-$module-$target_bootstrap_suffix\$/d
2940 /^@unless target-$module-$target_bootstrap_suffix\$/,/^@endunless target-$module-$target_bootstrap_suffix\$/d"
2941 done
2942
2943 # Do the final fixup along with target modules.
2944 extrasub_target="$extrasub_target
2945 /^@if /,/^@endif /d
2946 /^@unless /d
2947 /^@endunless /d"
2948
2949 if test "$enable_pgo_build" != "no"; then
2950   extrasub_build="$extrasub_build
2951 /^@if pgo-build\$/d
2952 /^@endif pgo-build\$/d"
2953 fi
2954
2955 # Create the serialization dependencies.  This uses a temporary file.
2956
2957 AC_ARG_ENABLE([serial-configure],
2958 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2959                 [force sequential configuration of
2960                  sub-packages for the host, target or build
2961                  machine, or all sub-packages])])
2962
2963 case ${enable_serial_configure} in
2964   yes)
2965     enable_serial_build_configure=yes
2966     enable_serial_host_configure=yes
2967     enable_serial_target_configure=yes
2968     ;;
2969 esac
2970
2971 # These force 'configure's to be done one at a time, to avoid problems
2972 # with contention over a shared config.cache.
2973 rm -f serdep.tmp
2974 echo '# serdep.tmp' > serdep.tmp
2975 olditem=
2976 test "x${enable_serial_build_configure}" = xyes &&
2977 for item in ${build_configdirs} ; do
2978   case ${olditem} in
2979     "") ;;
2980     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2981   esac
2982   olditem=${item}
2983 done
2984 olditem=
2985 test "x${enable_serial_host_configure}" = xyes &&
2986 for item in ${configdirs} ; do
2987   case ${olditem} in
2988     "") ;;
2989     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2990   esac
2991   olditem=${item}
2992 done
2993 olditem=
2994 test "x${enable_serial_target_configure}" = xyes &&
2995 for item in ${target_configdirs} ; do
2996   case ${olditem} in
2997     "") ;;
2998     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2999   esac
3000   olditem=${item}
3001 done
3002 serialization_dependencies=serdep.tmp
3003 AC_SUBST_FILE(serialization_dependencies)
3004
3005 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
3006 # target, nonopt, and variable assignments.  These are the ones we
3007 # might not want to pass down to subconfigures.  The exception being
3008 # --cache-file=/dev/null, which is used to turn off the use of cache
3009 # files altogether, and which should be passed on to subconfigures.
3010 # Also strip program-prefix, program-suffix, and program-transform-name,
3011 # so that we can pass down a consistent program-transform-name.
3012 baseargs=
3013 tbaseargs=
3014 keep_next=no
3015 skip_next=no
3016 eval "set -- $ac_configure_args"
3017 for ac_arg
3018 do
3019   if test X"$skip_next" = X"yes"; then
3020     skip_next=no
3021     continue
3022   fi
3023   if test X"$keep_next" = X"yes"; then
3024     case $ac_arg in
3025       *\'*)
3026         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3027     esac
3028     baseargs="$baseargs '$ac_arg'"
3029     tbaseargs="$tbaseargs '$ac_arg'"
3030     keep_next=no
3031     continue
3032   fi
3033
3034   # Handle separated arguments.  Based on the logic generated by
3035   # autoconf 2.59.
3036   case $ac_arg in
3037     *=* | --config-cache | -C | -disable-* | --disable-* \
3038       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
3039       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
3040       | -with-* | --with-* | -without-* | --without-* | --x)
3041       separate_arg=no
3042       ;;
3043     -*)
3044       separate_arg=yes
3045       ;;
3046     *)
3047       separate_arg=no
3048       ;;
3049   esac
3050
3051   skip_targ=no
3052   case $ac_arg in
3053 changequote(,)
3054   --with-* | --without-*)
3055     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
3056
3057     case $libopt in
3058     *[-_]include)
3059       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
3060       ;;
3061     *[-_]lib)
3062       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
3063       ;;
3064     *)
3065       lib=$libopt
3066       ;;
3067     esac
3068 changequote([,])
3069
3070     case $lib in
3071     mpc | mpfr | gmp | isl)
3072       # If we're processing --with-$lib, --with-$lib-include or
3073       # --with-$lib-lib, for one of the libs above, and target is
3074       # different from host, don't pass the current argument to any
3075       # target library's configure.
3076       if test x$is_cross_compiler = xyes; then
3077         skip_targ=yes
3078       fi
3079       ;;
3080     esac
3081     ;;
3082   esac
3083
3084   case "$ac_arg" in
3085     --cache-file=/dev/null | \
3086     -cache-file=/dev/null )
3087       # Handled here to avoid the test to skip args below.
3088       baseargs="$baseargs '$ac_arg'"
3089       tbaseargs="$tbaseargs '$ac_arg'"
3090       # Assert: $separate_arg should always be no.
3091       keep_next=$separate_arg
3092       ;;
3093     --no*)
3094       continue
3095       ;;
3096     --c* | \
3097     --sr* | \
3098     --ho* | \
3099     --bu* | \
3100     --t* | \
3101     --program-* | \
3102     -cache_file* | \
3103     -srcdir* | \
3104     -host* | \
3105     -build* | \
3106     -target* | \
3107     -program-prefix* | \
3108     -program-suffix* | \
3109     -program-transform-name* )
3110       skip_next=$separate_arg
3111       continue
3112       ;;
3113     -*)
3114       # An option.  Add it.
3115       case $ac_arg in
3116         *\'*)
3117           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3118       esac
3119       baseargs="$baseargs '$ac_arg'"
3120       if test X"$skip_targ" = Xno; then
3121         tbaseargs="$tbaseargs '$ac_arg'"
3122       fi
3123       keep_next=$separate_arg
3124       ;;
3125     *)
3126       # Either a variable assignment, or a nonopt (triplet).  Don't
3127       # pass it down; let the Makefile handle this.
3128       continue
3129       ;;
3130   esac
3131 done
3132 # Remove the initial space we just introduced and, as these will be
3133 # expanded by make, quote '$'.
3134 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3135
3136 # Add in --program-transform-name, after --program-prefix and
3137 # --program-suffix have been applied to it.  Autoconf has already
3138 # doubled dollar signs and backslashes in program_transform_name; we want
3139 # the backslashes un-doubled, and then the entire thing wrapped in single
3140 # quotes, because this will be expanded first by make and then by the shell.
3141 # Also, because we want to override the logic in subdir configure scripts to
3142 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3143 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3144 ${program_transform_name}
3145 EOF_SED
3146 gcc_transform_name=`cat conftestsed.out`
3147 rm -f conftestsed.out
3148 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3149 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3150 if test "$silent" = yes; then
3151   baseargs="$baseargs --silent"
3152   tbaseargs="$tbaseargs --silent"
3153 fi
3154
3155 baseargs="$baseargs --disable-option-checking"
3156 tbaseargs="$tbaseargs --disable-option-checking"
3157
3158 if test "$enable_year2038" = no; then
3159   baseargs="$baseargs --disable-year2038"
3160   tbaseargs="$tbaseargs --disable-year2038"
3161 fi
3162
3163 # Record and document user additions to sub configure arguments.
3164 AC_ARG_VAR([build_configargs],
3165            [additional configure arguments for build directories])
3166 AC_ARG_VAR([host_configargs],
3167            [additional configure arguments for host directories])
3168 AC_ARG_VAR([target_configargs],
3169            [additional configure arguments for target directories])
3170
3171 # For the build-side libraries, we just need to pretend we're native,
3172 # and not use the same cache file.  Multilibs are neither needed nor
3173 # desired.  We can't even use the same cache file for all build-side
3174 # libraries, as they're compiled differently; some with C, some with
3175 # C++ or with different feature-enabling options.
3176 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3177
3178 # For host modules, accept cache file option, or specification as blank.
3179 case "${cache_file}" in
3180 "") # empty
3181   cache_file_option="" ;;
3182 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3183   cache_file_option="--cache-file=${cache_file}" ;;
3184 *) # relative path
3185   cache_file_option="--cache-file=../${cache_file}" ;;
3186 esac
3187
3188 # Host dirs don't like to share a cache file either, horribly enough.
3189 # This seems to be due to autoconf 2.5x stupidity.
3190 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3191
3192 target_configargs="$target_configargs ${tbaseargs}"
3193
3194 # Passing a --with-cross-host argument lets the target libraries know
3195 # whether they are being built with a cross-compiler or being built
3196 # native.  However, it would be better to use other mechanisms to make the
3197 # sorts of decisions they want to make on this basis.  Please consider
3198 # this option to be deprecated.  FIXME.
3199 if test x${is_cross_compiler} = xyes ; then
3200   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3201 fi
3202
3203 # Special user-friendly check for native x86_64-linux build, if
3204 # multilib is not explicitly enabled.
3205 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3206   x86_64-*linux*:yes:$build:$build:)
3207     # Make sure we have a development environment that handles 32-bit
3208     dev64=no
3209     echo "int main () { return 0; }" > conftest.c
3210     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3211     if test $? = 0 ; then
3212       if test -s conftest || test -s conftest.exe ; then
3213         dev64=yes
3214       fi
3215     fi
3216     rm -f conftest*
3217     if test x${dev64} != xyes ; then
3218       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.])
3219     fi
3220     ;;
3221 esac
3222
3223 # Default to --enable-multilib.
3224 if test x${enable_multilib} = x ; then
3225   target_configargs="--enable-multilib ${target_configargs}"
3226 fi
3227
3228 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3229 # changed from the earlier setting of with_newlib.
3230 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3231   target_configargs="--with-newlib ${target_configargs}"
3232 fi
3233
3234 # Different target subdirs use different values of certain variables
3235 # (notably CXX).  Worse, multilibs use *lots* of different values.
3236 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3237 # it doesn't automatically accept command-line overrides of them.
3238 # This means it's not safe for target subdirs to share a cache file,
3239 # which is disgusting, but there you have it.  Hopefully this can be
3240 # fixed in future.  It's still worthwhile to use a cache file for each
3241 # directory.  I think.
3242
3243 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3244 # We need to pass --target, as newer autoconf's requires consistency
3245 # for target_alias and gcc doesn't manage it consistently.
3246 target_configargs="--cache-file=./config.cache ${target_configargs}"
3247
3248 FLAGS_FOR_TARGET=
3249 case " $target_configdirs " in
3250  *" newlib "*)
3251   case " $target_configargs " in
3252   *" --with-newlib "*)
3253    case "$target" in
3254     *-cygwin*)
3255       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3256       ;;
3257    esac
3258
3259    # If we're not building GCC, don't discard standard headers.
3260    if test -d ${srcdir}/gcc; then
3261      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3262
3263      if test "${build}" != "${host}"; then
3264        # On Canadian crosses, CC_FOR_TARGET will have already been set
3265        # by `configure', so we won't have an opportunity to add -Bgcc/
3266        # to it.  This is right: we don't want to search that directory
3267        # for binaries, but we want the header files in there, so add
3268        # them explicitly.
3269        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3270
3271        # Someone might think of using the pre-installed headers on
3272        # Canadian crosses, in case the installed compiler is not fully
3273        # compatible with the compiler being built.  In this case, it
3274        # would be better to flag an error than risking having
3275        # incompatible object files being constructed.  We can't
3276        # guarantee that an error will be flagged, but let's hope the
3277        # compiler will do it, when presented with incompatible header
3278        # files.
3279      fi
3280    fi
3281
3282    case "${target}-${is_cross_compiler}" in
3283    i[[3456789]]86-*-linux*-no)
3284       # Here host == target, so we don't need to build gcc,
3285       # so we don't want to discard standard headers.
3286       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3287       ;;
3288    *)
3289       # If we're building newlib, use its generic headers last, but search
3290       # for any libc-related directories first (so make it the last -B
3291       # switch).
3292       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3293
3294       # If we're building libgloss, find the startup file, simulator library
3295       # and linker script.
3296       case " $target_configdirs " in
3297         *" libgloss "*)
3298         # Look for startup file, simulator library and maybe linker script.
3299         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3300         # Look for libnosys.a in case the target needs it.
3301         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3302         # Most targets have the linker script in the source directory.
3303         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3304         ;;
3305       esac
3306       ;;
3307    esac
3308    ;;
3309   esac
3310   ;;
3311 esac
3312
3313 case "$target" in
3314   x86_64-*mingw* | *-w64-mingw*)
3315   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3316   # however, use a symlink named 'mingw' in ${prefix} .
3317     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3318     ;;
3319   *-mingw*)
3320   # MinGW can't be handled as Cygwin above since it does not use newlib.
3321     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
3322     ;;
3323 esac
3324
3325 # Allow the user to override the flags for
3326 # our build compiler if desired.
3327 if test x"${build}" = x"${host}" ; then
3328   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3329   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3330   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3331 fi
3332
3333 # On Canadian crosses, we'll be searching the right directories for
3334 # the previously-installed cross compiler, so don't bother to add
3335 # flags for directories within the install tree of the compiler
3336 # being built; programs in there won't even run.
3337 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3338   # Search for pre-installed headers if nothing else fits.
3339   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3340 fi
3341
3342 if test "x${use_gnu_ld}" = x &&
3343    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3344   # Arrange for us to find uninstalled linker scripts.
3345   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3346 fi
3347
3348 # Search for other target-specific linker scripts and such.
3349 case "${target}" in
3350   mep*)
3351     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3352     ;;
3353 esac
3354
3355 # Makefile fragments.
3356 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3357 do
3358   eval fragval=\$$frag
3359   if test $fragval != /dev/null; then
3360     eval $frag=${srcdir}/$fragval
3361   fi
3362 done
3363 AC_SUBST_FILE(host_makefile_frag)
3364 AC_SUBST_FILE(target_makefile_frag)
3365 AC_SUBST_FILE(alphaieee_frag)
3366 AC_SUBST_FILE(ospace_frag)
3367
3368 # Miscellanea: directories, flags, etc.
3369 AC_SUBST(RPATH_ENVVAR)
3370 AC_SUBST(GCC_SHLIB_SUBDIR)
3371 AC_SUBST(tooldir)
3372 AC_SUBST(build_tooldir)
3373 AC_SUBST(CONFIGURE_GDB_TK)
3374 AC_SUBST(GDB_TK)
3375 AC_SUBST(INSTALL_GDB_TK)
3376
3377 # Build module lists & subconfigure args.
3378 AC_SUBST(build_configargs)
3379 AC_SUBST(build_configdirs)
3380
3381 # Host module lists & subconfigure args.
3382 AC_SUBST(host_configargs)
3383 AC_SUBST(configdirs)
3384 AC_SUBST(target_configdirs)
3385
3386 # Target module lists & subconfigure args.
3387 AC_SUBST(target_configargs)
3388
3389
3390 # Build tools.
3391 AC_SUBST(AR_FOR_BUILD)
3392 AC_SUBST(AS_FOR_BUILD)
3393 AC_SUBST(CC_FOR_BUILD)
3394 AC_SUBST(CFLAGS_FOR_BUILD)
3395 AC_SUBST(CXXFLAGS_FOR_BUILD)
3396 AC_SUBST(CXX_FOR_BUILD)
3397 AC_SUBST(DLLTOOL_FOR_BUILD)
3398 AC_SUBST(GFORTRAN_FOR_BUILD)
3399 AC_SUBST(GOC_FOR_BUILD)
3400 AC_SUBST(LDFLAGS_FOR_BUILD)
3401 AC_SUBST(LD_FOR_BUILD)
3402 AC_SUBST(NM_FOR_BUILD)
3403 AC_SUBST(RANLIB_FOR_BUILD)
3404 AC_SUBST(WINDMC_FOR_BUILD)
3405 AC_SUBST(WINDRES_FOR_BUILD)
3406
3407 # Generate default definitions for YACC, M4, LEX and other programs that run
3408 # on the build machine.  These are used if the Makefile can't locate these
3409 # programs in objdir.
3410 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3411
3412 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3413 case " $build_configdirs " in
3414   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3415 esac
3416
3417 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3418 case " $build_configdirs " in
3419   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3420 esac
3421
3422 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3423 case " $build_configdirs " in
3424   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3425 esac
3426
3427 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3428 case " $build_configdirs " in
3429   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3430   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3431 esac
3432
3433 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3434 case " $build_configdirs " in
3435   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3436 esac
3437
3438 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3439 case " $build_configdirs " in
3440   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3441   *)
3442 changequote(,)
3443     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3444     # higher, else we use the "missing" dummy.
3445     if ${MAKEINFO} --version \
3446        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3447       :
3448     else
3449       MAKEINFO="$MISSING makeinfo"
3450     fi
3451     ;;
3452 changequote([,])
3453 esac
3454
3455 # FIXME: expect and dejagnu may become build tools?
3456
3457 AC_CHECK_PROGS(EXPECT, expect, expect)
3458 case " $configdirs " in
3459   *" expect "*)
3460     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3461     ;;
3462 esac
3463
3464 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3465 case " $configdirs " in
3466   *" dejagnu "*)
3467     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3468     ;;
3469 esac
3470
3471
3472 # Host tools.
3473 NCN_STRICT_CHECK_TOOLS(AR, ar)
3474 NCN_STRICT_CHECK_TOOLS(AS, as)
3475 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3476 NCN_STRICT_CHECK_TOOLS(LD, ld)
3477 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3478 NCN_STRICT_CHECK_TOOLS(NM, nm)
3479 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3480 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3481 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3482 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3483 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3484 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3485 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3486 AC_SUBST(CC)
3487 AC_SUBST(CXX)
3488 AC_SUBST(CFLAGS)
3489 AC_SUBST(CXXFLAGS)
3490 AC_SUBST(PKG_CONFIG_PATH)
3491
3492 GCC_PLUGIN_OPTION(PLUGIN_OPTION)
3493 AR_PLUGIN_OPTION=
3494 RANLIB_PLUGIN_OPTION=
3495 if test -n "$PLUGIN_OPTION"; then
3496   if $AR --help 2>&1 | grep -q "\--plugin"; then
3497     AR_PLUGIN_OPTION="$PLUGIN_OPTION"
3498   fi
3499   if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
3500     RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
3501   fi
3502 else
3503   if test "$enable_pgo_build" != "no"; then
3504     AC_MSG_ERROR([AR with --plugin and rc is required for LTO build])
3505   fi
3506 fi
3507 AC_SUBST(AR_PLUGIN_OPTION)
3508 AC_SUBST(RANLIB_PLUGIN_OPTION)
3509
3510 # Target tools.
3511 AC_ARG_WITH([build-time-tools],
3512   [AS_HELP_STRING([--with-build-time-tools=PATH],
3513                   [use given path to find target tools during the build])],
3514   [case x"$withval" in
3515      x/*) ;;
3516      *)
3517        with_build_time_tools=
3518        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3519        ;;
3520    esac],
3521   [with_build_time_tools=])
3522
3523 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3524 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3525 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3526 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3527 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3528
3529 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3530 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3531 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3532 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3533 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3534 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3535 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3536 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3537 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3538 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3539 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3540 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3541 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3542
3543 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3544
3545 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3546 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3547 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3548 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3549 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3550                 [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],
3551                 c++)
3552 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3553                 [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],
3554                 c++)
3555 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3556 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3557 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3558                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3559 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3560                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3561 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3562 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3563 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3564 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3565 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3566 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3567 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3568 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3569 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3570 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3571
3572 AC_SUBST(FLAGS_FOR_TARGET)
3573 AC_SUBST(RAW_CXX_FOR_TARGET)
3574
3575 # Certain tools may need extra flags.
3576 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3577 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3578 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3579
3580 # When building target libraries, except in a Canadian cross, we use
3581 # the same toolchain as the compiler we just built.
3582 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3583 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3584 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3585 if test $host = $build; then
3586   case " $configdirs " in
3587     *" gcc "*)
3588       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3589       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3590       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3591       ;;
3592   esac
3593 fi
3594
3595 AC_SUBST(COMPILER_AS_FOR_TARGET)
3596 AC_SUBST(COMPILER_LD_FOR_TARGET)
3597 AC_SUBST(COMPILER_NM_FOR_TARGET)
3598
3599 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3600 AC_ARG_ENABLE(maintainer-mode,
3601 [AS_HELP_STRING([--enable-maintainer-mode],
3602                 [enable make rules and dependencies not useful
3603                  (and sometimes confusing) to the casual installer])],
3604       USE_MAINTAINER_MODE=$enableval,
3605       USE_MAINTAINER_MODE=no)
3606 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3607 AC_SUBST(MAINTAINER_MODE_TRUE)
3608 AC_SUBST(MAINTAINER_MODE_FALSE)
3609 if test "$USE_MAINTAINER_MODE" = yes; then
3610   MAINTAINER_MODE_TRUE=
3611   MAINTAINER_MODE_FALSE='#'
3612 else
3613   MAINTAINER_MODE_TRUE='#'
3614   MAINTAINER_MODE_FALSE=
3615 fi
3616 MAINT=$MAINTAINER_MODE_TRUE
3617 AC_SUBST(MAINT)dnl
3618
3619 # ---------------------
3620 # GCC bootstrap support
3621 # ---------------------
3622
3623 # Stage specific cflags for build.
3624 stage1_cflags="-g"
3625 case $build in
3626   vax-*-*)
3627     case ${GCC} in
3628       yes) stage1_cflags="-g -Wa,-J" ;;
3629       *) stage1_cflags="-g -J" ;;
3630     esac ;;
3631 esac
3632
3633 AC_SUBST(stage1_cflags)
3634
3635 # Enable --enable-checking in stage1 of the compiler.
3636 AC_ARG_ENABLE(stage1-checking,
3637 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3638                 [choose additional checking for stage1 of the compiler])],
3639 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3640 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3641   # For --disable-checking or implicit --enable-checking=release, avoid
3642   # setting --enable-checking=gc in the default stage1 checking for LTO
3643   # bootstraps.  See PR62077.
3644   case $BUILD_CONFIG in
3645     *lto*)
3646       stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
3647     *)
3648       stage1_checking=--enable-checking=yes,types;;
3649   esac
3650   if test "x$enable_checking" = x && \
3651      test -d ${srcdir}/gcc && \
3652      test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3653     stage1_checking=--enable-checking=yes,types,extra
3654   fi
3655 else
3656   stage1_checking=--enable-checking=$enable_checking,types
3657 fi])
3658 AC_SUBST(stage1_checking)
3659
3660 # Enable -Werror in bootstrap stage2 and later.
3661 AC_ARG_ENABLE(werror,
3662 [AS_HELP_STRING([--enable-werror],
3663                 [enable -Werror in bootstrap stage2 and later])],
3664 [
3665 case ${enable_werror} in
3666   yes) stage2_werror_flag="--enable-werror-always" ;;
3667   *) stage2_werror_flag="" ;;
3668 esac
3669 ],
3670 [
3671 if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3672   case $BUILD_CONFIG in
3673   bootstrap-debug)
3674       stage2_werror_flag="--enable-werror-always" ;;
3675   "")
3676       stage2_werror_flag="--enable-werror-always" ;;
3677   esac
3678 fi
3679 ])
3680
3681 AC_SUBST(stage2_werror_flag)
3682
3683 # Specify what files to not compare during bootstrap.
3684
3685 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3686 case "$target" in
3687   hppa*64*-*-hpux*) ;;
3688   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/* | gcc/function-tests.o" ;;
3689   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3690 esac
3691 AC_SUBST(compare_exclusions)
3692
3693 AC_CONFIG_FILES([Makefile],
3694   [sed "$extrasub_build" Makefile |
3695    sed "$extrasub_host" |
3696    sed "$extrasub_target" > mf$$
3697    mv -f mf$$ Makefile],
3698   [extrasub_build="$extrasub_build"
3699    extrasub_host="$extrasub_host"
3700    extrasub_target="$extrasub_target"])
3701 AC_OUTPUT