configure.ac

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