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 #   Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; see the file COPYING3.  If not see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 ##############################################################################
  20 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
  21
  22 m4_include(config/acx.m4)
  23 m4_include(config/override.m4)
  24 m4_include(config/proginstall.m4)
  25 m4_include(config/elf.m4)
  26 m4_include([libtool.m4])
  27 m4_include([ltoptions.m4])
  28 m4_include([ltsugar.m4])
  29 m4_include([ltversion.m4])
  30 m4_include([lt~obsolete.m4])
  31 m4_include([config/isl.m4])
  32 m4_include([config/cloog.m4])
  33
  34 AC_INIT(move-if-change)
  35 AC_PREREQ(2.64)
  36 AC_DISABLE_OPTION_CHECKING
  37
  38 progname=$0
  39 # if PWD already has a value, it is probably wrong.
  40 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  41
  42 # Export original configure arguments for use by sub-configures.
  43 # Quote arguments with shell meta charatcers.
  44 TOPLEVEL_CONFIGURE_ARGUMENTS=
  45 set -- "$progname" "$@"
  46 for ac_arg
  47 do
  48   case "$ac_arg" in
  49   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  50     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  51     # if the argument is of the form -foo=baz, quote the baz part only
  52     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  53   *) ;;
  54   esac
  55   # Add the quoted argument to the list.
  56   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  57 done
  58 if test "$silent" = yes; then
  59   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  60 fi
  61 # Remove the initial space we just introduced and, as these will be
  62 # expanded by make, quote '$'.
  63 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  64 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  65
  66 # Find the build, host, and target systems.
  67 ACX_NONCANONICAL_BUILD
  68 ACX_NONCANONICAL_HOST
  69 ACX_NONCANONICAL_TARGET
  70
  71 dnl Autoconf 2.5x and later will set a default program prefix if
  72 dnl --target was used, even if it was the same as --host.  Disable
  73 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  74 dnl to take effect.
  75 test "$host_noncanonical" = "$target_noncanonical" &&
  76   test "$program_prefix$program_suffix$program_transform_name" = \
  77     NONENONEs,x,x, &&
  78   program_transform_name=s,y,y,
  79
  80 AC_CANONICAL_SYSTEM
  81 AC_ARG_PROGRAM
  82
  83 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  84 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  85
  86 # Get 'install' or 'install-sh' and its variants.
  87 AC_PROG_INSTALL
  88 ACX_PROG_LN
  89 AC_PROG_LN_S
  90 AC_PROG_SED
  91 AC_PROG_AWK
  92
  93 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  94
  95 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  96 # a relative path.
  97 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  98   INSTALL="${srcpwd}/install-sh -c"
  99 fi
 100
 101 # Set srcdir to "." if that's what it is.
 102 # This is important for multilib support.
 103 pwd=`${PWDCMD-pwd}`
 104 if test "${pwd}" = "${srcpwd}" ; then
 105   srcdir=.
 106 fi
 107
 108 topsrcdir=$srcpwd
 109
 110 extra_host_args=
 111
 112 ### To add a new directory to the tree, first choose whether it is a target
 113 ### or a host dependent tool.  Then put it into the appropriate list
 114 ### (library or tools, host or target), doing a dependency sort.
 115
 116 # Subdirs will be configured in the order listed in build_configdirs,
 117 # configdirs, or target_configdirs; see the serialization section below.
 118
 119 # Dependency sorting is only needed when *configuration* must be done in
 120 # a particular order.  In all cases a dependency should be specified in
 121 # the Makefile, whether or not it's implicitly specified here.
 122
 123 # Double entries in build_configdirs, configdirs, or target_configdirs may
 124 # cause circular dependencies and break everything horribly.
 125
 126 # these library is used by various programs built for the build
 127 # environment
 128 #
 129 build_libs="build-libiberty"
 130
 131 # these tools are built for the build environment
 132 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 133
 134 # these libraries are used by various programs built for the host environment
 135 #
 136 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl cloog libelf libiconv"
 137
 138 # these tools are built for the host environment
 139 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 140 # know that we are building the simulator.
 141 # binutils, gas and ld appear in that order because it makes sense to run
 142 # "make check" in that particular order.
 143 # If --enable-gold is used, "gold" may replace "ld".
 144 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools"
 145
 146 # libgcj represents the runtime libraries only used by gcj.
 147 libgcj="target-libffi \
 148         target-zlib \
 149         target-libjava"
 150
 151 # these libraries are built for the target environment, and are built after
 152 # the host libraries and the host tools (which may be a cross compiler)
 153 # Note that libiberty is not a target library.
 154 target_libraries="target-libgcc \
 155                 target-libbacktrace \
 156                 target-libgloss \
 157                 target-newlib \
 158                 target-libgomp \
 159                 target-libcilkrts \
 160                 target-libatomic \
 161                 target-libitm \
 162                 target-libstdc++-v3 \
 163                 target-libsanitizer \
 164                 target-libvtv \
 165                 target-libssp \
 166                 target-libquadmath \
 167                 target-libgfortran \
 168                 target-boehm-gc \
 169                 ${libgcj} \
 170                 target-libobjc \
 171                 target-libada \
 172                 target-libgo"
 173
 174 # these tools are built using the target libraries, and are intended to
 175 # run only in the target environment
 176 #
 177 # note: any program that *uses* libraries that are in the "target_libraries"
 178 # list belongs in this list.
 179 #
 180 target_tools="target-rda"
 181
 182 ################################################################################
 183
 184 ## All tools belong in one of the four categories, and are assigned above
 185 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 186 ## is important because configure will choke if they ever get through.
 187 ## ${configdirs} is directories we build using the host tools.
 188 ## ${target_configdirs} is directories we build using the target tools.
 189 configdirs=`echo ${host_libs} ${host_tools}`
 190 target_configdirs=`echo ${target_libraries} ${target_tools}`
 191 build_configdirs=`echo ${build_libs} ${build_tools}`
 192
 193 m4_divert_text([PARSE_ARGS],
 194 [case $srcdir in
 195   *" "*)
 196 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 197     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 198 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 199     ;;
 200 esac
 201 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 202 ])
 203
 204 ################################################################################
 205
 206 srcname="gnu development package"
 207
 208 # This gets set non-empty for some net releases of packages.
 209 appdirs=""
 210
 211 # Define is_cross_compiler to save on calls to 'test'.
 212 is_cross_compiler=
 213 if test x"${host}" = x"${target}" ; then
 214   is_cross_compiler=no
 215 else
 216   is_cross_compiler=yes
 217 fi
 218
 219 # Find the build and target subdir names.
 220 GCC_TOPLEV_SUBDIRS
 221 # Be sure to cover against remnants of an in-tree build.
 222 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 223   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 224 Use a pristine source tree when building in a separate tree])
 225 fi
 226
 227 # Skipdirs are removed silently.
 228 skipdirs=
 229 # Noconfigdirs are removed loudly.
 230 noconfigdirs=""
 231
 232 use_gnu_ld=
 233 # Make sure we don't let GNU ld be added if we didn't want it.
 234 if test x$with_gnu_ld = xno ; then
 235   use_gnu_ld=no
 236   noconfigdirs="$noconfigdirs ld gold"
 237 fi
 238
 239 use_gnu_as=
 240 # Make sure we don't let GNU as be added if we didn't want it.
 241 if test x$with_gnu_as = xno ; then
 242   use_gnu_as=no
 243   noconfigdirs="$noconfigdirs gas"
 244 fi
 245
 246 use_included_zlib=
 247 # Make sure we don't let ZLIB be added if we didn't want it.
 248 if test x$with_system_zlib = xyes ; then
 249   use_included_zlib=no
 250   noconfigdirs="$noconfigdirs zlib"
 251 fi
 252
 253 # some tools are so dependent upon X11 that if we're not building with X,
 254 # it's not even worth trying to configure, much less build, that tool.
 255
 256 case ${with_x} in
 257   yes | "") ;; # the default value for this tree is that X11 is available
 258   no)
 259     skipdirs="${skipdirs} tk itcl libgui"
 260     # We won't be able to build gdbtk without X.
 261     enable_gdbtk=no
 262     ;;
 263   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 264 esac
 265
 266 # Some are only suitable for cross toolchains.
 267 # Remove these if host=target.
 268 cross_only="target-libgloss target-newlib target-opcodes"
 269
 270 case $is_cross_compiler in
 271   no) skipdirs="${skipdirs} ${cross_only}" ;;
 272 esac
 273
 274 # If both --with-headers and --with-libs are specified, default to
 275 # --without-newlib.
 276 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 277    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 278   if test x"${with_newlib}" = x ; then
 279     with_newlib=no
 280   fi
 281 fi
 282
 283 # Recognize --with-newlib/--without-newlib.
 284 case ${with_newlib} in
 285   no) skipdirs="${skipdirs} target-newlib" ;;
 286   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 287 esac
 288
 289 # Handle --enable-gold, --enable-ld.
 290 # --disable-gold [--enable-ld]
 291 #     Build only ld.  Default option.
 292 # --enable-gold [--enable-ld]
 293 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 294 #     as "ld.bfd" and "ld".
 295 # --enable-gold=default [--enable-ld]
 296 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 297 #     install ld as "ld.bfd".
 298 # --enable-gold[=default] --disable-ld
 299 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 300 # --enable-gold --enable-ld=default
 301 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 302 #     and ld.bfd).
 303 #     In other words, ld is default
 304 # --enable-gold=default --enable-ld=default
 305 #     Error.
 306
 307 default_ld=
 308 AC_ARG_ENABLE(gold,
 309 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 310                 [build gold @<:@ARG={default,yes,no}@:>@])],
 311 ENABLE_GOLD=$enableval,
 312 ENABLE_GOLD=no)
 313 case "${ENABLE_GOLD}" in
 314   yes|default)
 315     # Check for ELF target.
 316     is_elf=no
 317     case "${target}" in
 318       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 319       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 320       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 321       | *-*-solaris2* | *-*-nto* | *-*-nacl*)
 322         case "${target}" in
 323           *-*-linux*aout* | *-*-linux*oldld*)
 324             ;;
 325           *)
 326             is_elf=yes
 327             ;;
 328         esac
 329     esac
 330
 331     if test "$is_elf" = "yes"; then
 332       # Check for target supported by gold.
 333       case "${target}" in
 334         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 335         | aarch64*-*-* | tilegx*-*-*)
 336           configdirs="$configdirs gold"
 337           if test x${ENABLE_GOLD} = xdefault; then
 338             default_ld=gold
 339           fi
 340           ENABLE_GOLD=yes
 341           ;;
 342       esac
 343     fi
 344     ;;
 345   no)
 346     ;;
 347   *)
 348     AC_MSG_ERROR([invalid --enable-gold argument])
 349     ;;
 350 esac
 351
 352 AC_ARG_ENABLE(ld,
 353 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 354                 [build ld @<:@ARG={default,yes,no}@:>@])],
 355 ENABLE_LD=$enableval,
 356 ENABLE_LD=yes)
 357
 358 case "${ENABLE_LD}" in
 359   default)
 360     if test x${default_ld} != x; then
 361       AC_MSG_ERROR([either gold or ld can be the default ld])
 362     fi
 363     ;;
 364   yes)
 365     ;;
 366   no)
 367     if test x${ENABLE_GOLD} != xyes; then
 368       AC_MSG_WARN([neither ld nor gold are enabled])
 369     fi
 370     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 371     ;;
 372   *)
 373     AC_MSG_ERROR([invalid --enable-ld argument])
 374     ;;
 375 esac
 376
 377 # Configure extra directories which are host specific
 378
 379 case "${host}" in
 380   *-cygwin*)
 381     configdirs="$configdirs libtermcap" ;;
 382 esac
 383
 384 # A target can indicate whether a language isn't supported for some reason.
 385 # Only spaces may be used in this macro; not newlines or tabs.
 386 unsupported_languages=
 387
 388 # Remove more programs from consideration, based on the host or
 389 # target this usually means that a port of the program doesn't
 390 # exist yet.
 391
 392 case "${host}" in
 393   i[[3456789]]86-*-msdosdjgpp*)
 394     noconfigdirs="$noconfigdirs tcl tk itcl"
 395     ;;
 396 esac
 397
 398
 399 AC_ARG_ENABLE(libquadmath,
 400 AS_HELP_STRING([--disable-libquadmath],
 401   [do not build libquadmath directory]),
 402 ENABLE_LIBQUADMATH=$enableval,
 403 ENABLE_LIBQUADMATH=yes)
 404 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 405   noconfigdirs="$noconfigdirs target-libquadmath"
 406 fi
 407
 408
 409 AC_ARG_ENABLE(libquadmath-support,
 410 AS_HELP_STRING([--disable-libquadmath-support],
 411   [disable libquadmath support for Fortran]),
 412 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 413 ENABLE_LIBQUADMATH_SUPPORT=yes)
 414 enable_libquadmath_support=
 415 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 416   enable_libquadmath_support=no
 417 fi
 418
 419
 420 AC_ARG_ENABLE(libada,
 421 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 422 ENABLE_LIBADA=$enableval,
 423 ENABLE_LIBADA=yes)
 424 if test "${ENABLE_LIBADA}" != "yes" ; then
 425   noconfigdirs="$noconfigdirs gnattools"
 426 fi
 427
 428 AC_ARG_ENABLE(libssp,
 429 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 430 ENABLE_LIBSSP=$enableval,
 431 ENABLE_LIBSSP=yes)
 432
 433 AC_ARG_ENABLE(libstdcxx,
 434 AS_HELP_STRING([--disable-libstdcxx],
 435   [do not build libstdc++-v3 directory]),
 436 ENABLE_LIBSTDCXX=$enableval,
 437 ENABLE_LIBSTDCXX=default)
 438 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 439   noconfigdirs="$noconfigdirs libstdc++-v3"
 440 fi]
 441
 442 # Save it here so that, even in case of --enable-libgcj, if the Java
 443 # front-end isn't enabled, we still get libgcj disabled.
 444 libgcj_saved=$libgcj
 445 case $enable_libgcj in
 446 yes)
 447   # If we reset it here, it won't get added to noconfigdirs in the
 448   # target-specific build rules, so it will be forcibly enabled
 449   # (unless the Java language itself isn't enabled).
 450   libgcj=
 451   ;;
 452 no)
 453   # Make sure we get it printed in the list of not supported target libs.
 454   # Don't disable libffi, though, other languages use it.
 455   noconfigdirs="$noconfigdirs `echo ${libgcj} | sed -e 's/target-libffi//'`"
 456   # Clear libgcj_saved so that even if java is enabled libffi won't be
 457   # built.
 458   libgcj_saved=
 459   ;;
 460 esac
 461
 462 AC_ARG_ENABLE(static-libjava,
 463 [AS_HELP_STRING([[--enable-static-libjava[=ARG]]],
 464                 [build static libjava @<:@default=no@:>@])],
 465 ENABLE_STATIC_LIBJAVA=$enableval,
 466 ENABLE_STATIC_LIBJAVA=no)
 467 enable_static_libjava=
 468 if test "${ENABLE_STATIC_LIBJAVA}" = "yes" ; then
 469   enable_static_libjava=yes
 470 fi
 471
 472 if test x$enable_static_libjava != xyes ; then
 473   EXTRA_CONFIGARGS_LIBJAVA=--disable-static
 474 fi
 475 AC_SUBST(EXTRA_CONFIGARGS_LIBJAVA)
 476
 477 # Disable libgomp on non POSIX hosted systems.
 478 if test x$enable_libgomp = x ; then
 479     # Enable libgomp by default on hosted POSIX systems.
 480     case "${target}" in
 481     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 482         ;;
 483     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 484         ;;
 485     *-*-solaris2* | *-*-hpux11*)
 486         ;;
 487     *-*-darwin* | *-*-aix*)
 488         ;;
 489     *)
 490         noconfigdirs="$noconfigdirs target-libgomp"
 491         ;;
 492     esac
 493 fi
 494
 495 # Disable libatomic on unsupported systems.
 496 if test -d ${srcdir}/libatomic; then
 497     if test x$enable_libatomic = x; then
 498         AC_MSG_CHECKING([for libatomic support])
 499         if (srcdir=${srcdir}/libatomic; \
 500                 . ${srcdir}/configure.tgt; \
 501                 test -n "$UNSUPPORTED")
 502         then
 503             AC_MSG_RESULT([no])
 504             noconfigdirs="$noconfigdirs target-libatomic"
 505         else
 506             AC_MSG_RESULT([yes])
 507         fi
 508     fi
 509 fi
 510
 511 # Disable libcilkrts on unsupported systems.
 512 if test -d ${srcdir}/libcilkrts; then
 513     if test x$enable_libcilkrts = x; then
 514         AC_MSG_CHECKING([for libcilkrts support])
 515         if (srcdir=${srcdir}/libcilkrts; \
 516                 . ${srcdir}/configure.tgt; \
 517                 test -n "$UNSUPPORTED")
 518         then
 519             AC_MSG_RESULT([no])
 520             noconfigdirs="$noconfigdirs target-libcilkrts"
 521         else
 522             AC_MSG_RESULT([yes])
 523         fi
 524     fi
 525 fi
 526
 527 # Disable libitm on unsupported systems.
 528 if test -d ${srcdir}/libitm; then
 529     if test x$enable_libitm = x; then
 530         AC_MSG_CHECKING([for libitm support])
 531         if (srcdir=${srcdir}/libitm; \
 532                 . ${srcdir}/configure.tgt; \
 533                 test -n "$UNSUPPORTED")
 534         then
 535             AC_MSG_RESULT([no])
 536             noconfigdirs="$noconfigdirs target-libitm"
 537         else
 538             AC_MSG_RESULT([yes])
 539         fi
 540     fi
 541 fi
 542
 543 # Disable libsanitizer on unsupported systems.
 544 if test -d ${srcdir}/libsanitizer; then
 545     if test x$enable_libsanitizer = x; then
 546         AC_MSG_CHECKING([for libsanitizer support])
 547         if (srcdir=${srcdir}/libsanitizer; \
 548                 . ${srcdir}/configure.tgt; \
 549                 test -n "$UNSUPPORTED")
 550         then
 551             AC_MSG_RESULT([no])
 552             noconfigdirs="$noconfigdirs target-libsanitizer"
 553         else
 554             AC_MSG_RESULT([yes])
 555         fi
 556     fi
 557 fi
 558
 559 # Disable libvtv on unsupported systems.
 560 if test -d ${srcdir}/libvtv; then
 561     if test x$enable_libvtv = x; then
 562         AC_MSG_CHECKING([for libvtv support])
 563         if (srcdir=${srcdir}/libvtv; \
 564                 . ${srcdir}/configure.tgt; \
 565                 test "$VTV_SUPPORTED" != "yes")
 566         then
 567             AC_MSG_RESULT([no])
 568             noconfigdirs="$noconfigdirs target-libvtv"
 569         else
 570             AC_MSG_RESULT([yes])
 571         fi
 572     fi
 573 fi
 574
 575 # Disable libquadmath for some systems.
 576 case "${target}" in
 577   avr-*-*)
 578     noconfigdirs="$noconfigdirs target-libquadmath"
 579     ;;
 580   # libquadmath is unused on AIX and libquadmath build process use of
 581   # LD_LIBRARY_PATH can break AIX bootstrap.
 582   powerpc-*-aix* | rs6000-*-aix*)
 583     noconfigdirs="$noconfigdirs target-libquadmath"
 584     ;;
 585 esac
 586
 587 # Disable libssp for some systems.
 588 case "${target}" in
 589   avr-*-*)
 590     # No hosted I/O support.
 591     noconfigdirs="$noconfigdirs target-libssp"
 592     ;;
 593   powerpc-*-aix* | rs6000-*-aix*)
 594     noconfigdirs="$noconfigdirs target-libssp"
 595     ;;
 596   rl78-*-*)
 597     # libssp uses a misaligned load to trigger a fault, but the RL78
 598     # doesn't fault for those - instead, it gives a build-time error
 599     # for explicit misaligned loads.
 600     noconfigdirs="$noconfigdirs target-libssp"
 601     ;;
 602 esac
 603
 604 # Disable libstdc++-v3 for some systems.
 605 # Allow user to override this if they pass --enable-libstdc++-v3
 606 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 607   case "${target}" in
 608     *-*-vxworks*)
 609       # VxWorks uses the Dinkumware C++ library.
 610       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 611       ;;
 612     arm*-wince-pe*)
 613       # the C++ libraries don't build on top of CE's C libraries
 614       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 615       ;;
 616     avr-*-*)
 617       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 618       ;;
 619   esac
 620 fi
 621
 622 # Disable Fortran for some systems.
 623 case "${target}" in
 624   mmix-*-*)
 625     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 626     unsupported_languages="$unsupported_languages fortran"
 627     ;;
 628 esac
 629
 630 # Disable Java if libffi is not supported.
 631 case "${target}" in
 632   aarch64-*-*)
 633     ;;
 634   alpha*-*-*)
 635     ;;
 636   arm*-*-*)
 637     ;;
 638   cris-*-*)
 639     ;;
 640   frv-*-*)
 641     ;;
 642   hppa*-*-linux*)
 643     ;;
 644   hppa*-*-hpux*)
 645     ;;
 646   i?86-*-*)
 647     ;;
 648   ia64*-*-*)
 649     ;;
 650   m32r*-*-*)
 651     ;;
 652   m68k-*-*)
 653     ;;
 654   mips*-*-rtems*)
 655     ;;
 656   mips*-*-linux*)
 657     ;;
 658   powerpc*-*-linux*)
 659     ;;
 660   powerpc-*-darwin*)
 661     ;;
 662   powerpc-*-aix* | rs6000-*-aix*)
 663     ;;
 664   powerpc-*-freebsd*)
 665     ;;
 666   powerpc64-*-freebsd*)
 667     ;;
 668   powerpc*-*-rtems*)
 669     ;;
 670   s390-*-* | s390x-*-*)
 671     ;;
 672   sh-*-* | sh[[34]]*-*-*)
 673     ;;
 674   sh64-*-* | sh5*-*-*)
 675     ;;
 676   sparc*-*-*)
 677     ;;
 678   x86_64-*-*)
 679     ;;
 680   *-*-*)
 681     unsupported_languages="$unsupported_languages java"
 682     ;;
 683 esac
 684
 685 # Disable Java, libgcj or related libraries for some systems.
 686 case "${target}" in
 687   powerpc-*-darwin*)
 688     ;;
 689   i[[3456789]]86-*-darwin*)
 690     ;;
 691   x86_64-*-darwin[[912]]*)
 692     ;;
 693   *-*-darwin*)
 694     noconfigdirs="$noconfigdirs ${libgcj}"
 695     ;;
 696   *-*-netware*)
 697     noconfigdirs="$noconfigdirs ${libgcj}"
 698     ;;
 699   *-*-rtems*)
 700     noconfigdirs="$noconfigdirs ${libgcj}"
 701     ;;
 702   *-*-tpf*)
 703     noconfigdirs="$noconfigdirs ${libgcj}"
 704     ;;
 705   *-*-uclinux*)
 706     noconfigdirs="$noconfigdirs ${libgcj}"
 707     ;;
 708   *-*-vxworks*)
 709     noconfigdirs="$noconfigdirs ${libgcj}"
 710     ;;
 711   alpha*-*-*vms*)
 712     noconfigdirs="$noconfigdirs ${libgcj}"
 713     ;;
 714   arm-wince-pe)
 715     noconfigdirs="$noconfigdirs ${libgcj}"
 716     ;;
 717   arm*-*-symbianelf*)
 718     noconfigdirs="$noconfigdirs ${libgcj}"
 719     ;;
 720   bfin-*-*)
 721     noconfigdirs="$noconfigdirs target-boehm-gc"
 722     ;;
 723   cris-*-* | crisv32-*-*)
 724     unsupported_languages="$unsupported_languages java"
 725     case "${target}" in
 726       *-*-linux*)
 727         ;;
 728       *) # See PR46792 regarding target-libffi.
 729         noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
 730     esac
 731     ;;
 732   hppa*64*-*-linux*)
 733     # In this case, it's because the hppa64-linux target is for
 734     # the kernel only at this point and has no libc, and thus no
 735     # headers, crt*.o, etc., all of which are needed by these.
 736     unsupported_languages="$unsupported_languages java"
 737     ;;
 738   hppa*64*-*-hpux*)
 739     noconfigdirs="$noconfigdirs ${libgcj}"
 740     ;;
 741   hppa*-hp-hpux11*)
 742     ;;
 743   hppa*-*-hpux*)
 744     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 745     # build on HP-UX 10.20.
 746     noconfigdirs="$noconfigdirs ${libgcj}"
 747     ;;
 748   ia64*-*-*vms*)
 749     noconfigdirs="$noconfigdirs ${libgcj}"
 750     ;;
 751   i[[3456789]]86-w64-mingw*)
 752     noconfigdirs="$noconfigdirs ${libgcj}"
 753     ;;
 754   i[[3456789]]86-*-mingw*)
 755     noconfigdirs="$noconfigdirs ${libgcj}"
 756     ;;
 757   x86_64-*-mingw*)
 758     noconfigdirs="$noconfigdirs ${libgcj}"
 759     ;;
 760   mmix-*-*)
 761     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc"
 762     ;;
 763   powerpc-*-aix*)
 764     # copied from rs6000-*-* entry
 765     noconfigdirs="$noconfigdirs ${libgcj}"
 766     ;;
 767   rs6000-*-aix*)
 768     noconfigdirs="$noconfigdirs ${libgcj}"
 769     ;;
 770   *-*-lynxos*)
 771     noconfigdirs="$noconfigdirs ${libgcj}"
 772     ;;
 773 esac
 774
 775 # Disable libgo for some systems where it is known to not work.
 776 # For testing, you can easily override this with --enable-libgo.
 777 if test x$enable_libgo = x; then
 778     case "${target}" in
 779     *-*-darwin*)
 780         # PR 46986
 781         noconfigdirs="$noconfigdirs target-libgo"
 782         ;;
 783     *-*-cygwin* | *-*-mingw*)
 784         noconfigdirs="$noconfigdirs target-libgo"
 785         ;;
 786     *-*-aix*)
 787         noconfigdirs="$noconfigdirs target-libgo"
 788         ;;
 789     esac
 790 fi
 791
 792 # Default libgloss CPU subdirectory.
 793 libgloss_dir="$target_cpu"
 794
 795 case "${target}" in
 796   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 797     libgloss_dir=wince
 798     ;;
 799   aarch64*-*-* )
 800     libgloss_dir=aarch64
 801     ;;
 802   arm*-*-*)
 803     libgloss_dir=arm
 804     ;;
 805   cris-*-* | crisv32-*-*)
 806     libgloss_dir=cris
 807     ;;
 808   hppa*-*-*)
 809     libgloss_dir=pa
 810     ;;
 811   i[[3456789]]86-*-*)
 812     libgloss_dir=i386
 813     ;;
 814   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 815     libgloss_dir=m68hc11
 816     ;;
 817   m68*-*-* | fido-*-*)
 818     libgloss_dir=m68k
 819     ;;
 820   mips*-*-*)
 821     libgloss_dir=mips
 822     ;;
 823   powerpc*-*-*)
 824     libgloss_dir=rs6000
 825     ;;
 826   sparc*-*-*)
 827     libgloss_dir=sparc
 828     ;;
 829 esac
 830
 831 # Disable newlib and libgloss for various target OSes.
 832 case "${target}" in
 833   alpha*-dec-osf*)
 834     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 835     ;;
 836   i[[3456789]]86-*-linux*)
 837     # This section makes it possible to build newlib natively on linux.
 838     # If we are using a cross compiler then don't configure newlib.
 839     if test x${is_cross_compiler} != xno ; then
 840       noconfigdirs="$noconfigdirs target-newlib"
 841     fi
 842     noconfigdirs="$noconfigdirs target-libgloss"
 843     # If we are not using a cross compiler, do configure newlib.
 844     # Note however, that newlib will only be configured in this situation
 845     # if the --with-newlib option has been given, because otherwise
 846     # 'target-newlib' will appear in skipdirs.
 847     ;;
 848   i[[3456789]]86-*-rdos*)
 849     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 850     ;;
 851   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 852     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 853     ;;
 854   sparc-*-sunos4*)
 855     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 856     ;;
 857   *-*-aix*)
 858     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 859     ;;
 860   *-*-beos*)
 861     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 862     ;;
 863   *-*-chorusos)
 864     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 865     ;;
 866   *-*-dragonfly*)
 867     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 868     ;;
 869   *-*-freebsd*)
 870     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 871     ;;
 872   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 873     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 874     ;;
 875   *-*-lynxos*)
 876     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 877     ;;
 878   *-*-mingw*)
 879     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 880     ;;
 881   *-*-netbsd*)
 882     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 883     ;;
 884   *-*-netware*)
 885     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 886     ;;
 887   *-*-tpf*)
 888     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 889     ;;
 890   *-*-uclinux*)
 891     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 892     ;;
 893   *-*-vxworks*)
 894     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 895     ;;
 896 esac
 897
 898 case "${target}" in
 899   *-*-chorusos)
 900     ;;
 901   powerpc-*-darwin*)
 902     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 903     noconfigdirs="$noconfigdirs sim target-rda"
 904     ;;
 905   i[[3456789]]86-*-darwin*)
 906     noconfigdirs="$noconfigdirs ld gprof"
 907     noconfigdirs="$noconfigdirs sim target-rda"
 908     ;;
 909   x86_64-*-darwin[[912]]*)
 910     noconfigdirs="$noconfigdirs ld gas gprof"
 911     noconfigdirs="$noconfigdirs sim target-rda"
 912     ;;
 913   *-*-darwin*)
 914     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 915     noconfigdirs="$noconfigdirs sim target-rda"
 916     ;;
 917   *-*-dragonfly*)
 918     ;;
 919   *-*-freebsd*)
 920     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 921         && test -f /usr/local/include/gmp.h; then
 922       with_gmp=/usr/local
 923     fi
 924     ;;
 925   *-*-kaos*)
 926     # Remove unsupported stuff on all kaOS configurations.
 927     noconfigdirs="$noconfigdirs target-libgloss"
 928     ;;
 929   *-*-netbsd*)
 930     ;;
 931   *-*-netware*)
 932     ;;
 933   *-*-rtems*)
 934     noconfigdirs="$noconfigdirs target-libgloss"
 935     # this is not caught below because this stanza matches earlier
 936     case $target in
 937       or1k*-*-*) noconfigdirs="$noconfigdirs gdb" ;;
 938     esac
 939     ;;
 940     # The tpf target doesn't support gdb yet.
 941   *-*-tpf*)
 942     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
 943     ;;
 944   *-*-uclinux*)
 945     noconfigdirs="$noconfigdirs target-rda"
 946     ;;
 947   *-*-vxworks*)
 948     ;;
 949   alpha*-dec-osf*)
 950     # ld works, but does not support shared libraries.
 951     # gas doesn't generate exception information.
 952     noconfigdirs="$noconfigdirs gas ld"
 953     ;;
 954   alpha*-*-*vms*)
 955     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
 956     ;;
 957   alpha*-*-*)
 958     # newlib is not 64 bit ready
 959     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 960     ;;
 961   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 962     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
 963     ;;
 964   arc-*-*|arceb-*-*)
 965     noconfigdirs="$noconfigdirs target-libgloss"
 966     ;;
 967   arm-*-pe*)
 968     noconfigdirs="$noconfigdirs target-libgloss"
 969     ;;
 970   arm-*-riscix*)
 971     noconfigdirs="$noconfigdirs ld target-libgloss"
 972     ;;
 973   avr-*-rtems*)
 974     ;;
 975   avr-*-*)
 976     if test x${with_avrlibc} != xno; then
 977       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 978     fi
 979     ;;
 980   c4x-*-* | tic4x-*-*)
 981     noconfigdirs="$noconfigdirs target-libgloss"
 982     ;;
 983   tic54x-*-*)
 984     noconfigdirs="$noconfigdirs target-libgloss gdb"
 985     ;;
 986   d10v-*-*)
 987     noconfigdirs="$noconfigdirs target-libgloss"
 988     ;;
 989   d30v-*-*)
 990     noconfigdirs="$noconfigdirs gdb"
 991     ;;
 992   fr30-*-elf*)
 993     noconfigdirs="$noconfigdirs gdb"
 994     ;;
 995   moxie-*-*)
 996     noconfigdirs="$noconfigdirs gprof"
 997     ;;
 998   h8300*-*-*)
 999     noconfigdirs="$noconfigdirs target-libgloss"
1000     ;;
1001   h8500-*-*)
1002     noconfigdirs="$noconfigdirs target-libgloss"
1003     ;;
1004   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1005     ;;
1006   hppa*64*-*-linux*)
1007     ;;
1008   hppa*-*-linux*)
1009     ;;
1010   hppa*-*-*elf* | \
1011   hppa*-*-lites* | \
1012   hppa*-*-openbsd* | \
1013   hppa*64*-*-*)
1014     ;;
1015   hppa*-hp-hpux11*)
1016     noconfigdirs="$noconfigdirs ld"
1017     ;;
1018   hppa*-*-pro*)
1019     ;;
1020   hppa*-*-*)
1021     noconfigdirs="$noconfigdirs ld"
1022     ;;
1023   i960-*-*)
1024     noconfigdirs="$noconfigdirs gdb"
1025     ;;
1026   ia64*-*-elf*)
1027     # No gdb support yet.
1028     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1029     ;;
1030   ia64*-**-hpux*)
1031     # No ld support yet.
1032     noconfigdirs="$noconfigdirs libgui itcl ld"
1033     ;;
1034   ia64*-*-*vms*)
1035     # No ld support yet.
1036     noconfigdirs="$noconfigdirs libgui itcl ld"
1037     ;;
1038   i[[3456789]]86-w64-mingw*)
1039     ;;
1040   i[[3456789]]86-*-mingw*)
1041     target_configdirs="$target_configdirs target-winsup"
1042     ;;
1043   *-*-cygwin*)
1044     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1045     noconfigdirs="$noconfigdirs target-libgloss"
1046     # always build newlib if winsup directory is present.
1047     if test -d "$srcdir/winsup/cygwin"; then
1048       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1049     elif test -d "$srcdir/newlib"; then
1050       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1051     fi
1052     ;;
1053   i[[3456789]]86-*-pe)
1054     noconfigdirs="$noconfigdirs target-libgloss"
1055     ;;
1056   i[[3456789]]86-*-sco3.2v5*)
1057     # The linker does not yet know about weak symbols in COFF,
1058     # and is not configured to handle mixed ELF and COFF.
1059     noconfigdirs="$noconfigdirs ld target-libgloss"
1060     ;;
1061   i[[3456789]]86-*-sco*)
1062     noconfigdirs="$noconfigdirs gprof target-libgloss"
1063     ;;
1064   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1065     noconfigdirs="$noconfigdirs target-libgloss"
1066     ;;
1067   i[[3456789]]86-*-sysv4*)
1068     noconfigdirs="$noconfigdirs target-libgloss"
1069     ;;
1070   i[[3456789]]86-*-beos*)
1071     noconfigdirs="$noconfigdirs gdb"
1072     ;;
1073   i[[3456789]]86-*-rdos*)
1074     noconfigdirs="$noconfigdirs gdb"
1075     ;;
1076   mmix-*-*)
1077     noconfigdirs="$noconfigdirs gdb"
1078     ;;
1079   mt-*-*)
1080     noconfigdirs="$noconfigdirs sim"
1081     ;;
1082   powerpc-*-aix*)
1083     # copied from rs6000-*-* entry
1084     noconfigdirs="$noconfigdirs gprof"
1085     ;;
1086   powerpc*-*-winnt* | powerpc*-*-pe*)
1087     target_configdirs="$target_configdirs target-winsup"
1088     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1089     # always build newlib.
1090     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1091     ;;
1092     # This is temporary until we can link against shared libraries
1093   powerpcle-*-solaris*)
1094     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1095     ;;
1096   powerpc-*-beos*)
1097     noconfigdirs="$noconfigdirs gdb"
1098     ;;
1099   rs6000-*-lynxos*)
1100     noconfigdirs="$noconfigdirs gprof"
1101     ;;
1102   rs6000-*-aix*)
1103     noconfigdirs="$noconfigdirs gprof"
1104     ;;
1105   rs6000-*-*)
1106     noconfigdirs="$noconfigdirs gprof"
1107     ;;
1108   m68k-apollo-*)
1109     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1110     ;;
1111   microblaze*)
1112     noconfigdirs="$noconfigdirs gprof"
1113     ;;
1114   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1115     if test x$with_newlib = xyes; then
1116       noconfigdirs="$noconfigdirs gprof"
1117     fi
1118     ;;
1119   mips*-*-irix5*)
1120     noconfigdirs="$noconfigdirs gprof target-libgloss"
1121     ;;
1122   mips*-*-irix6*)
1123     noconfigdirs="$noconfigdirs gprof target-libgloss"
1124     ;;
1125   mips*-*-bsd*)
1126     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1127     ;;
1128   mips*-*-linux*)
1129     ;;
1130   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1131   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1132     noconfigdirs="$noconfigdirs ld gas gprof"
1133     ;;
1134   mips*-*-*)
1135     noconfigdirs="$noconfigdirs gprof"
1136     ;;
1137   nds32*-*-*)
1138     noconfigdirs="$noconfigdirs gdb"
1139     ;;
1140   or1k*-*-*)
1141     noconfigdirs="$noconfigdirs gdb"
1142     ;;
1143   sh-*-* | sh64-*-*)
1144     case "${target}" in
1145       sh*-*-elf)
1146          ;;
1147       *)
1148          noconfigdirs="$noconfigdirs target-libgloss" ;;
1149     esac
1150     ;;
1151   sparc-*-sunos4*)
1152     if test x${is_cross_compiler} = xno ; then
1153            use_gnu_ld=no
1154     fi
1155     ;;
1156   tic6x-*-*)
1157     noconfigdirs="$noconfigdirs sim"
1158     ;;
1159   tilepro*-*-* | tilegx*-*-*)
1160     noconfigdirs="$noconfigdirs sim"
1161     ;;
1162   v810-*-*)
1163     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1164     ;;
1165   vax-*-*)
1166     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1167     ;;
1168 esac
1169
1170 # If we aren't building newlib, then don't build libgloss, since libgloss
1171 # depends upon some newlib header files.
1172 case "${noconfigdirs}" in
1173   *target-libgloss*) ;;
1174   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1175 esac
1176
1177 # Work in distributions that contain no compiler tools, like Autoconf.
1178 host_makefile_frag=/dev/null
1179 if test -d ${srcdir}/config ; then
1180 case "${host}" in
1181   i[[3456789]]86-*-msdosdjgpp*)
1182     host_makefile_frag="config/mh-djgpp"
1183     ;;
1184   *-cygwin*)
1185     ACX_CHECK_CYGWIN_CAT_WORKS
1186     host_makefile_frag="config/mh-cygwin"
1187     ;;
1188   *-mingw*)
1189     host_makefile_frag="config/mh-mingw"
1190     ;;
1191   hppa*-hp-hpux10*)
1192     host_makefile_frag="config/mh-pa-hpux10"
1193     ;;
1194   hppa*-hp-hpux*)
1195     host_makefile_frag="config/mh-pa"
1196     ;;
1197   hppa*-*)
1198     host_makefile_frag="config/mh-pa"
1199     ;;
1200   *-*-darwin*)
1201     host_makefile_frag="config/mh-darwin"
1202     ;;
1203   powerpc-*-aix*)
1204     host_makefile_frag="config/mh-ppc-aix"
1205     ;;
1206   rs6000-*-aix*)
1207     host_makefile_frag="config/mh-ppc-aix"
1208     ;;
1209 esac
1210 fi
1211
1212 if test "${build}" != "${host}" ; then
1213   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1214   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1215   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1216   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1217   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1218   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1219   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1220   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1221   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1222   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1223   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1224   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1225   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1226 else
1227   AR_FOR_BUILD="\$(AR)"
1228   AS_FOR_BUILD="\$(AS)"
1229   CC_FOR_BUILD="\$(CC)"
1230   CXX_FOR_BUILD="\$(CXX)"
1231   GCJ_FOR_BUILD="\$(GCJ)"
1232   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1233   GOC_FOR_BUILD="\$(GOC)"
1234   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1235   LD_FOR_BUILD="\$(LD)"
1236   NM_FOR_BUILD="\$(NM)"
1237   RANLIB_FOR_BUILD="\$(RANLIB)"
1238   WINDRES_FOR_BUILD="\$(WINDRES)"
1239   WINDMC_FOR_BUILD="\$(WINDMC)"
1240 fi
1241
1242 AC_PROG_CC
1243 AC_PROG_CXX
1244
1245 # We must set the default linker to the linker used by gcc for the correct
1246 # operation of libtool.  If LD is not defined and we are using gcc, try to
1247 # set the LD default to the ld used by gcc.
1248 if test -z "$LD"; then
1249   if test "$GCC" = yes; then
1250     case $build in
1251     *-*-mingw*)
1252       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1253     *)
1254       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1255     esac
1256     case $gcc_prog_ld in
1257     # Accept absolute paths.
1258     [[\\/]* | [A-Za-z]:[\\/]*)]
1259       LD="$gcc_prog_ld" ;;
1260     esac
1261   fi
1262 fi
1263
1264 # Check whether -static-libstdc++ -static-libgcc is supported.
1265 have_static_libs=no
1266 if test "$GCC" = yes; then
1267   saved_LDFLAGS="$LDFLAGS"
1268
1269   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1270   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1271   AC_LANG_PUSH(C++)
1272   AC_LINK_IFELSE([
1273 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1274 #error -static-libstdc++ not implemented
1275 #endif
1276 int main() {}],
1277     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1278     [AC_MSG_RESULT([no])])
1279   AC_LANG_POP(C++)
1280
1281   LDFLAGS="$saved_LDFLAGS"
1282 fi
1283
1284 ACX_PROG_GNAT
1285 ACX_PROG_CMP_IGNORE_INITIAL
1286
1287 AC_ARG_ENABLE([bootstrap],
1288 [AS_HELP_STRING([--enable-bootstrap],
1289                 [enable bootstrapping @<:@yes if native build@:>@])],,
1290 enable_bootstrap=default)
1291
1292 # Issue errors and warnings for invalid/strange bootstrap combinations.
1293 if test -r $srcdir/gcc/configure; then
1294   have_compiler=yes
1295 else
1296   have_compiler=no
1297 fi
1298
1299 case "$have_compiler:$host:$target:$enable_bootstrap" in
1300   *:*:*:no) ;;
1301
1302   # Default behavior.  Enable bootstrap if we have a compiler
1303   # and we are in a native configuration.
1304   yes:$build:$build:default)
1305     enable_bootstrap=yes ;;
1306
1307   *:*:*:default)
1308     enable_bootstrap=no ;;
1309
1310   # We have a compiler and we are in a native configuration, bootstrap is ok
1311   yes:$build:$build:yes)
1312     ;;
1313
1314   # Other configurations, but we have a compiler.  Assume the user knows
1315   # what he's doing.
1316   yes:*:*:yes)
1317     AC_MSG_WARN([trying to bootstrap a cross compiler])
1318     ;;
1319
1320   # No compiler: if they passed --enable-bootstrap explicitly, fail
1321   no:*:*:yes)
1322     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1323
1324   # Fail if wrong command line
1325   *)
1326     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1327     ;;
1328 esac
1329
1330 # Used for setting $lt_cv_objdir
1331 _LT_CHECK_OBJDIR
1332
1333 # Check for GMP, MPFR and MPC
1334 gmplibs="-lmpc -lmpfr -lgmp"
1335 gmpinc=
1336 have_gmp=no
1337
1338 # Specify a location for mpc
1339 # check for this first so it ends up on the link line before mpfr.
1340 AC_ARG_WITH(mpc,
1341 [AS_HELP_STRING([--with-mpc=PATH],
1342                 [specify prefix directory for installed MPC package.
1343                  Equivalent to --with-mpc-include=PATH/include
1344                  plus --with-mpc-lib=PATH/lib])])
1345 AC_ARG_WITH(mpc-include,
1346 [AS_HELP_STRING([--with-mpc-include=PATH],
1347                 [specify directory for installed MPC include files])])
1348 AC_ARG_WITH(mpc-lib,
1349 [AS_HELP_STRING([--with-mpc-lib=PATH],
1350                 [specify directory for the installed MPC library])])
1351
1352 if test "x$with_mpc" != x; then
1353   gmplibs="-L$with_mpc/lib $gmplibs"
1354   gmpinc="-I$with_mpc/include $gmpinc"
1355 fi
1356 if test "x$with_mpc_include" != x; then
1357   gmpinc="-I$with_mpc_include $gmpinc"
1358 fi
1359 if test "x$with_mpc_lib" != x; then
1360   gmplibs="-L$with_mpc_lib $gmplibs"
1361 fi
1362 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1363   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1364   gmpinc='-I$$s/mpc/src '"$gmpinc"
1365   # Do not test the mpc version.  Assume that it is sufficient, since
1366   # it is in the source tree, and the library has not been built yet
1367   # but it would be included on the link line in the version check below
1368   # hence making the test fail.
1369   have_gmp=yes
1370 fi
1371
1372 # Specify a location for mpfr
1373 # check for this first so it ends up on the link line before gmp.
1374 AC_ARG_WITH(mpfr-dir,
1375 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1376 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1377 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1378
1379 AC_ARG_WITH(mpfr,
1380 [AS_HELP_STRING([--with-mpfr=PATH],
1381                 [specify prefix directory for installed MPFR package.
1382                  Equivalent to --with-mpfr-include=PATH/include
1383                  plus --with-mpfr-lib=PATH/lib])])
1384 AC_ARG_WITH(mpfr-include,
1385 [AS_HELP_STRING([--with-mpfr-include=PATH],
1386                 [specify directory for installed MPFR include files])])
1387 AC_ARG_WITH(mpfr-lib,
1388 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1389                 [specify directory for the installed MPFR library])])
1390
1391 if test "x$with_mpfr" != x; then
1392   gmplibs="-L$with_mpfr/lib $gmplibs"
1393   gmpinc="-I$with_mpfr/include $gmpinc"
1394 fi
1395 if test "x$with_mpfr_include" != x; then
1396   gmpinc="-I$with_mpfr_include $gmpinc"
1397 fi
1398 if test "x$with_mpfr_lib" != x; then
1399   gmplibs="-L$with_mpfr_lib $gmplibs"
1400 fi
1401 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1402   # MPFR v3.1.0 moved the sources into a src sub-directory.
1403   if test -d ${srcdir}/mpfr/src; then
1404     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1405     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1406     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1407   else
1408     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
1409     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
1410     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
1411   fi
1412   # Do not test the mpfr version.  Assume that it is sufficient, since
1413   # it is in the source tree, and the library has not been built yet
1414   # but it would be included on the link line in the version check below
1415   # hence making the test fail.
1416   have_gmp=yes
1417 fi
1418
1419 # Specify a location for gmp
1420 AC_ARG_WITH(gmp-dir,
1421 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1422 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1423 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1424
1425 AC_ARG_WITH(gmp,
1426 [AS_HELP_STRING([--with-gmp=PATH],
1427                 [specify prefix directory for the installed GMP package.
1428                  Equivalent to --with-gmp-include=PATH/include
1429                  plus --with-gmp-lib=PATH/lib])])
1430 AC_ARG_WITH(gmp-include,
1431 [AS_HELP_STRING([--with-gmp-include=PATH],
1432                 [specify directory for installed GMP include files])])
1433 AC_ARG_WITH(gmp-lib,
1434 [AS_HELP_STRING([--with-gmp-lib=PATH],
1435                 [specify directory for the installed GMP library])])
1436
1437
1438 if test "x$with_gmp" != x; then
1439   gmplibs="-L$with_gmp/lib $gmplibs"
1440   gmpinc="-I$with_gmp/include $gmpinc"
1441 fi
1442 if test "x$with_gmp_include" != x; then
1443   gmpinc="-I$with_gmp_include $gmpinc"
1444 fi
1445 if test "x$with_gmp_lib" != x; then
1446   gmplibs="-L$with_gmp_lib $gmplibs"
1447 fi
1448 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1449   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1450   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1451   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1452   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1453   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1454   # Do not test the gmp version.  Assume that it is sufficient, since
1455   # it is in the source tree, and the library has not been built yet
1456   # but it would be included on the link line in the version check below
1457   # hence making the test fail.
1458   have_gmp=yes
1459 fi
1460
1461 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1462   have_gmp=yes
1463   saved_CFLAGS="$CFLAGS"
1464   CFLAGS="$CFLAGS $gmpinc"
1465   # Check for the recommended and required versions of GMP.
1466   AC_MSG_CHECKING([for the correct version of gmp.h])
1467   AC_TRY_COMPILE([#include "gmp.h"],[
1468   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1469   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1470   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1471   choke me
1472   #endif
1473   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1474   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1475   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1476   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1477   choke me
1478   #endif
1479   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1480    [AC_MSG_RESULT([no]); have_gmp=no])
1481
1482   # If we have GMP, check the MPFR version.
1483   if test x"$have_gmp" = xyes; then
1484     # Check for the recommended and required versions of MPFR.
1485     AC_MSG_CHECKING([for the correct version of mpfr.h])
1486     AC_TRY_COMPILE([#include <gmp.h>
1487     #include <mpfr.h>],[
1488     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1489     choke me
1490     #endif
1491     ], [AC_TRY_COMPILE([#include <gmp.h>
1492     #include <mpfr.h>],[
1493     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1494     choke me
1495     #endif
1496     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1497      [AC_MSG_RESULT([no]); have_gmp=no])
1498   fi
1499
1500   # Check for the MPC header version.
1501   if test x"$have_gmp" = xyes ; then
1502     # Check for the recommended and required versions of MPC.
1503     AC_MSG_CHECKING([for the correct version of mpc.h])
1504     AC_TRY_COMPILE([#include <mpc.h>],[
1505     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1506     choke me
1507     #endif
1508     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1509     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1510     choke me
1511     #endif
1512     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1513      [AC_MSG_RESULT([no]); have_gmp=no])
1514   fi
1515
1516   # Now check the MPFR library.
1517   if test x"$have_gmp" = xyes; then
1518     saved_LIBS="$LIBS"
1519     LIBS="$LIBS $gmplibs"
1520     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1521     AC_TRY_LINK([#include <mpc.h>],[
1522     mpfr_t n;
1523     mpfr_t x;
1524     mpc_t c;
1525     int t;
1526     mpfr_init (n);
1527     mpfr_init (x);
1528     mpfr_atan2 (n, n, x, GMP_RNDN);
1529     mpfr_erfc (n, x, GMP_RNDN);
1530     mpfr_subnormalize (x, t, GMP_RNDN);
1531     mpfr_clear(n);
1532     mpfr_clear(x);
1533     mpc_init2 (c, 53);
1534     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1535     mpc_cosh (c, c, MPC_RNDNN);
1536     mpc_pow (c, c, c, MPC_RNDNN);
1537     mpc_acosh (c, c, MPC_RNDNN);
1538     mpc_clear (c);
1539     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1540     LIBS="$saved_LIBS"
1541   fi
1542
1543   CFLAGS="$saved_CFLAGS"
1544
1545 # The library versions listed in the error message below should match
1546 # the HARD-minimums enforced above.
1547   if test x$have_gmp != xyes; then
1548     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1549 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1550 their locations.  Source code for these libraries can be found at
1551 their respective hosting sites as well as at
1552 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1553 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1554 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1555 make sure that you have installed both the libraries and the header
1556 files.  They may be located in separate packages.])
1557   fi
1558 fi
1559
1560 # Flags needed for both GMP, MPFR and/or MPC.
1561 AC_SUBST(gmplibs)
1562 AC_SUBST(gmpinc)
1563 AC_SUBST(extra_mpfr_configure_flags)
1564 AC_SUBST(extra_mpc_gmp_configure_flags)
1565 AC_SUBST(extra_mpc_mpfr_configure_flags)
1566 AC_SUBST(extra_isl_gmp_configure_flags)
1567
1568 # Allow host libstdc++ to be specified for static linking with PPL.
1569 AC_ARG_WITH(host-libstdcxx,
1570 [AS_HELP_STRING([--with-host-libstdcxx=L],
1571                 [use linker arguments L to link with libstdc++
1572                  when linking with PPL])])
1573
1574 case $with_host_libstdcxx in
1575   no|yes)
1576     AC_MSG_ERROR([-with-host-libstdcxx needs an argument])
1577     ;;
1578 esac
1579
1580 # Libraries to use for stage1 or when not bootstrapping.
1581 AC_ARG_WITH(stage1-libs,
1582 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1583 [if test "$withval" = "no" -o "$withval" = "yes"; then
1584    stage1_libs=
1585  else
1586    stage1_libs=$withval
1587  fi],
1588 [stage1_libs=$with_host_libstdcxx])
1589 AC_SUBST(stage1_libs)
1590
1591 # Linker flags to use for stage1 or when not bootstrapping.
1592 AC_ARG_WITH(stage1-ldflags,
1593 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1594 [if test "$withval" = "no" -o "$withval" = "yes"; then
1595    stage1_ldflags=
1596  else
1597    stage1_ldflags=$withval
1598  fi],
1599 [stage1_ldflags=
1600  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1601  # if supported.  But if the user explicitly specified the libraries to use,
1602  # trust that they are doing what they want.
1603  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1604    stage1_ldflags="-static-libstdc++ -static-libgcc"
1605  fi])
1606 AC_SUBST(stage1_ldflags)
1607
1608 # Libraries to use for stage2 and later builds.  This defaults to the
1609 # argument passed to --with-host-libstdcxx.
1610 AC_ARG_WITH(boot-libs,
1611 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1612 [if test "$withval" = "no" -o "$withval" = "yes"; then
1613    poststage1_libs=
1614  else
1615    poststage1_libs=$withval
1616  fi],
1617 [poststage1_libs=$with_host_libstdcxx])
1618 AC_SUBST(poststage1_libs)
1619
1620 # Linker flags to use for stage2 and later builds.
1621 AC_ARG_WITH(boot-ldflags,
1622 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1623                 [linker flags for stage2 and later])],
1624 [if test "$withval" = "no" -o "$withval" = "yes"; then
1625    poststage1_ldflags=
1626  else
1627    poststage1_ldflags=$withval
1628  fi],
1629 [poststage1_ldflags=
1630  # In stages 2 and 3, default to linking libstdc++ and libgcc
1631  # statically.  But if the user explicitly specified the libraries to
1632  # use, trust that they are doing what they want.
1633  if test "$poststage1_libs" = ""; then
1634    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1635  fi])
1636 AC_SUBST(poststage1_ldflags)
1637
1638 # GCC GRAPHITE dependences, ISL and CLOOG which in turn requires ISL.
1639 # Basic setup is inlined here, actual checks are in config/cloog.m4 and
1640 # config/isl.m4
1641
1642 AC_ARG_WITH(cloog,
1643   [AS_HELP_STRING(
1644     [--with-cloog=PATH],
1645     [Specify prefix directory for the installed CLooG-ISL package.
1646      Equivalent to --with-cloog-include=PATH/include
1647      plus --with-cloog-lib=PATH/lib])])
1648 AC_ARG_WITH(isl,
1649   [AS_HELP_STRING(
1650    [--with-isl=PATH],
1651    [Specify prefix directory for the installed ISL package.
1652     Equivalent to --with-isl-include=PATH/include
1653     plus --with-isl-lib=PATH/lib])])
1654
1655 # Treat either --without-cloog or --without-isl as a request to disable
1656 # GRAPHITE support and skip all following checks.
1657 if test "x$with_isl" != "xno" &&
1658    test "x$with_cloog" != "xno"; then
1659   # Check for ISL
1660   dnl Provide configure switches and initialize islinc & isllibs
1661   dnl with user input.
1662   ISL_INIT_FLAGS
1663   dnl The versions of ISL that work for Graphite
1664   ISL_CHECK_VERSION(0,10)
1665   if test "${gcc_cv_isl}" = no ; then
1666     ISL_CHECK_VERSION(0,11)
1667     if test "${gcc_cv_isl}" = no ; then
1668       ISL_CHECK_VERSION(0,12)
1669     fi
1670   fi
1671   dnl Only execute fail-action, if ISL has been requested.
1672   ISL_IF_FAILED([
1673     AC_MSG_ERROR([Unable to find a usable ISL.  See config.log for details.])])
1674
1675   if test "x$gcc_cv_isl" != "xno"; then
1676     # Check for CLOOG
1677     dnl Provide configure switches and initialize clooginc & clooglibs
1678     dnl with user input.
1679     CLOOG_INIT_FLAGS
1680     dnl The versions of CLooG that work for Graphite.
1681     CLOOG_CHECK_VERSION(0,17,0)
1682     if test "${gcc_cv_cloog}" = no ; then
1683       CLOOG_CHECK_VERSION(0,18,0)
1684     fi
1685
1686     dnl Only execute fail-action, if CLooG has been requested.
1687     CLOOG_IF_FAILED([
1688       AC_MSG_ERROR([Unable to find a usable CLooG.  See config.log for details.])])
1689   fi
1690 fi
1691
1692 # If either the ISL or the CLooG check failed, disable builds of in-tree
1693 # variants of both
1694 if test "x$with_isl" = xno ||
1695    test "x$with_cloog" = xno ||
1696    test "x$gcc_cv_cloog" = xno ||
1697    test "x$gcc_cv_isl" = xno; then
1698   noconfigdirs="$noconfigdirs cloog isl"
1699   islinc=
1700   clooginc=
1701   clooglibs=
1702 fi
1703
1704 AC_SUBST(islinc)
1705 AC_SUBST(clooglibs)
1706 AC_SUBST(clooginc)
1707
1708
1709 # Check for LTO support.
1710 AC_ARG_ENABLE(lto,
1711 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1712 enable_lto=$enableval,
1713 enable_lto=yes; default_enable_lto=yes)
1714
1715 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1716   build_lto_plugin=yes
1717 ],[if test x"$default_enable_lto" = x"yes" ; then
1718     case $target in
1719       *-apple-darwin9* | *-cygwin* | *-mingw*) ;;
1720       # On other non-ELF platforms, LTO has yet to be validated.
1721       *) enable_lto=no ;;
1722     esac
1723   else
1724   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1725   # It would also be nice to check the binutils support, but we don't
1726   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1727   # warn during gcc/ subconfigure; unless you're bootstrapping with
1728   # -flto it won't be needed until after installation anyway.
1729     case $target in
1730       *-cygwin* | *-mingw* | *-apple-darwin*) ;;
1731       *) if test x"$enable_lto" = x"yes"; then
1732         AC_MSG_ERROR([LTO support is not enabled for this target.])
1733         fi
1734       ;;
1735     esac
1736   fi
1737   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1738   # Build it unless LTO was explicitly disabled.
1739   case $target in
1740     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1741     *) ;;
1742   esac
1743 ])
1744
1745
1746 # By default, C and C++ are the only stage 1 languages.
1747 stage1_languages=,c,
1748
1749 # Target libraries that we bootstrap.
1750 bootstrap_target_libs=,target-libgcc,
1751
1752 # Figure out what language subdirectories are present.
1753 # Look if the user specified --enable-languages="..."; if not, use
1754 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1755 # go away some day.
1756 # NB:  embedded tabs in this IF block -- do not untabify
1757 if test -d ${srcdir}/gcc; then
1758   if test x"${enable_languages+set}" != xset; then
1759     if test x"${LANGUAGES+set}" = xset; then
1760       enable_languages="${LANGUAGES}"
1761         echo configure.in: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1762     else
1763       enable_languages=all
1764     fi
1765   else
1766     if test x"${enable_languages}" = x ||
1767        test x"${enable_languages}" = xyes;
1768        then
1769       echo configure.in: --enable-languages needs at least one language argument 1>&2
1770       exit 1
1771     fi
1772   fi
1773   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1774
1775   # 'f95' is the old name for the 'fortran' language. We issue a warning
1776   # and make the substitution.
1777   case ,${enable_languages}, in
1778     *,f95,*)
1779       echo configure.in: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1780       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1781       ;;
1782   esac
1783
1784   # If bootstrapping, C++ must be enabled.
1785   case ",$enable_languages,:$enable_bootstrap" in
1786     *,c++,*:*) ;;
1787     *:yes)
1788       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1789         enable_languages="${enable_languages},c++"
1790       else
1791         AC_MSG_ERROR([bootstrapping requires c++ sources])
1792       fi
1793       ;;
1794   esac
1795
1796   # First scan to see if an enabled language requires some other language.
1797   # We assume that a given config-lang.in will list all the language
1798   # front ends it requires, even if some are required indirectly.
1799   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1800     case ${lang_frag} in
1801       ..) ;;
1802       # The odd quoting in the next line works around
1803       # an apparent bug in bash 1.12 on linux.
1804       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1805       *)
1806         # From the config-lang.in, get $language, $lang_requires, and
1807         # $lang_requires_boot_languages.
1808         language=
1809         lang_requires=
1810         lang_requires_boot_languages=
1811         . ${lang_frag}
1812         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1813           case ,${enable_languages}, in
1814             *,$other,*) ;;
1815             *,all,*) ;;
1816             *,$language,*)
1817               echo " \`$other' language required by \`$language'; enabling" 1>&2
1818               enable_languages="${enable_languages},${other}"
1819               ;;
1820           esac
1821         done
1822         for other in ${lang_requires_boot_languages} ; do
1823           if test "$other" != "c"; then
1824             case ,${enable_stage1_languages}, in
1825               *,$other,*) ;;
1826               *,all,*) ;;
1827               *)
1828                 case ,${enable_languages}, in
1829                   *,$language,*)
1830                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1831                     enable_stage1_languages="$enable_stage1_languages,${other}"
1832                     ;;
1833                 esac
1834                 ;;
1835             esac
1836           fi
1837         done
1838         ;;
1839     esac
1840   done
1841
1842   new_enable_languages=,c,
1843
1844   # If LTO is enabled, add the LTO front end.
1845   extra_host_libiberty_configure_flags=
1846   if test "$enable_lto" = "yes" ; then
1847     case ,${enable_languages}, in
1848       *,lto,*) ;;
1849       *) enable_languages="${enable_languages},lto" ;;
1850     esac
1851     if test "${build_lto_plugin}" = "yes" ; then
1852       configdirs="$configdirs lto-plugin"
1853       extra_host_libiberty_configure_flags=--enable-shared
1854     fi
1855   fi
1856   AC_SUBST(extra_host_libiberty_configure_flags)
1857
1858   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1859   potential_languages=,c,
1860
1861   enabled_target_libs=
1862   disabled_target_libs=
1863
1864   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1865     case ${lang_frag} in
1866       ..) ;;
1867       # The odd quoting in the next line works around
1868       # an apparent bug in bash 1.12 on linux.
1869       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1870       *)
1871         # From the config-lang.in, get $language, $target_libs,
1872         # $lang_dirs, $boot_language, and $build_by_default
1873         language=
1874         target_libs=
1875         lang_dirs=
1876         subdir_requires=
1877         boot_language=no
1878         build_by_default=yes
1879         . ${lang_frag}
1880         if test x${language} = x; then
1881           echo "${lang_frag} doesn't set \$language." 1>&2
1882           exit 1
1883         fi
1884
1885         if test "$language" = "c++"; then
1886           boot_language=yes
1887         fi
1888
1889         add_this_lang=no
1890         case ,${enable_languages}, in
1891           *,${language},*)
1892             # Language was explicitly selected; include it
1893             # unless it is C, which is enabled by default.
1894             if test "$language" != "c"; then
1895               add_this_lang=yes
1896             fi
1897             ;;
1898           *,all,*)
1899             # 'all' was selected, select it if it is a default language
1900             if test "$language" != "c"; then
1901               add_this_lang=${build_by_default}
1902             fi
1903             ;;
1904         esac
1905
1906         # Disable languages that need other directories if these aren't available.
1907         for i in $subdir_requires; do
1908           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1909           case ,${enable_languages}, in
1910             *,${language},*)
1911               # Specifically requested language; tell them.
1912               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1913               ;;
1914             *)
1915               # Silently disable.
1916               add_this_lang=unsupported
1917               ;;
1918           esac
1919         done
1920
1921         # Disable Ada if no preexisting GNAT is available.
1922         case ,${enable_languages},:${language}:${have_gnat} in
1923           *,${language},*:ada:no)
1924             # Specifically requested language; tell them.
1925             AC_MSG_ERROR([GNAT is required to build $language])
1926             ;;
1927           *:ada:no)
1928             # Silently disable.
1929             add_this_lang=unsupported
1930             ;;
1931         esac
1932
1933         # Disable a language that is unsupported by the target.
1934         case " $unsupported_languages " in
1935           *" $language "*)
1936             add_this_lang=unsupported
1937             ;;
1938         esac
1939
1940         case $add_this_lang in
1941           unsupported)
1942             # Remove language-dependent dirs.
1943             disabled_target_libs="$disabled_target_libs $target_libs"
1944             noconfigdirs="$noconfigdirs $lang_dirs"
1945             ;;
1946           no)
1947             # Remove language-dependent dirs; still show language as supported.
1948             disabled_target_libs="$disabled_target_libs $target_libs"
1949             noconfigdirs="$noconfigdirs $lang_dirs"
1950             potential_languages="${potential_languages}${language},"
1951             ;;
1952           yes)
1953             new_enable_languages="${new_enable_languages}${language},"
1954             potential_languages="${potential_languages}${language},"
1955             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
1956             enabled_target_libs="$enabled_target_libs $target_libs"
1957             case "${boot_language}:,$enable_stage1_languages," in
1958               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
1959                 # Add to (comma-separated) list of stage 1 languages.
1960                 case ",$stage1_languages," in
1961                   *,$language,* | ,yes, | ,all,) ;;
1962                   *) stage1_languages="${stage1_languages}${language}," ;;
1963                 esac
1964                 # We need to bootstrap any supporting libraries.
1965                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
1966                 ;;
1967             esac
1968             ;;
1969         esac
1970         ;;
1971     esac
1972   done
1973
1974   # Add target libraries which are only needed for disabled languages
1975   # to noconfigdirs.
1976   if test -n "$disabled_target_libs"; then
1977     for dir in $disabled_target_libs; do
1978       case " $enabled_target_libs " in
1979       *" ${dir} "*) ;;
1980       *) noconfigdirs="$noconfigdirs $dir" ;;
1981       esac
1982     done
1983   fi
1984
1985   AC_ARG_ENABLE(stage1-languages,
1986   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
1987                   [choose additional languages to build during
1988                   stage1.  Mostly useful for compiler development])],
1989   [case ,${enable_stage1_languages}, in
1990     ,no,|,,)
1991       # Set it to something that will have no effect in the loop below
1992       enable_stage1_languages=c ;;
1993     ,yes,)
1994       enable_stage1_languages=`echo $new_enable_languages | \
1995         sed -e "s/^,//" -e "s/,$//" ` ;;
1996     *,all,*)
1997       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
1998         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
1999   esac
2000
2001   # Add "good" languages from enable_stage1_languages to stage1_languages,
2002   # while "bad" languages go in missing_languages.  Leave no duplicates.
2003   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2004     case $potential_languages in
2005       *,$i,*)
2006         case $stage1_languages in
2007           *,$i,*) ;;
2008           *) stage1_languages="$stage1_languages$i," ;;
2009         esac ;;
2010       *)
2011         case $missing_languages in
2012           *,$i,*) ;;
2013           *) missing_languages="$missing_languages$i," ;;
2014         esac ;;
2015      esac
2016   done])
2017
2018   # Remove leading/trailing commas that were added for simplicity
2019   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2020   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2021   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2022   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2023
2024   if test "x$missing_languages" != x; then
2025     AC_MSG_ERROR([
2026 The following requested languages could not be built: ${missing_languages}
2027 Supported languages are: ${potential_languages}])
2028   fi
2029   if test "x$new_enable_languages" != "x$enable_languages"; then
2030     echo The following languages will be built: ${new_enable_languages}
2031     enable_languages="$new_enable_languages"
2032   fi
2033
2034   AC_SUBST(stage1_languages)
2035   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2036 fi
2037
2038 # Handle --disable-<component> generically.
2039 for dir in $configdirs $build_configdirs $target_configdirs ; do
2040   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2041   varname=`echo $dirname | sed -e s/+/_/g`
2042   if eval test x\${enable_${varname}} "=" xno ; then
2043     noconfigdirs="$noconfigdirs $dir"
2044   fi
2045 done
2046
2047 # Check for Boehm's garbage collector
2048 AC_ARG_ENABLE(objc-gc,
2049 [AS_HELP_STRING([--enable-objc-gc],
2050                 [enable use of Boehm's garbage collector with the
2051                  GNU Objective-C runtime])],
2052 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
2053   *,objc,*:*:yes:*target-boehm-gc*)
2054     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
2055     ;;
2056 esac])
2057
2058 # Make sure we only build Boehm's garbage collector if required.
2059 case ,${enable_languages},:${enable_objc_gc} in
2060   *,objc,*:yes)
2061     # Keep target-boehm-gc if requested for Objective-C.
2062     ;;
2063   *)
2064     # Otherwise remove target-boehm-gc depending on target-libjava.
2065     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
2066       noconfigdirs="$noconfigdirs target-boehm-gc"
2067     fi
2068     ;;
2069 esac
2070
2071 # Disable libitm, libsanitizer, libvtv if we're not building C++
2072 case ,${enable_languages}, in
2073   *,c++,*) ;;
2074   *)
2075     noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer target-libvtv"
2076     ;;
2077 esac
2078
2079 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2080 # $build_configdirs and $target_configdirs.
2081 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2082
2083 notsupp=""
2084 for dir in . $skipdirs $noconfigdirs ; do
2085   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2086   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2087     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2088     if test -r $srcdir/$dirname/configure ; then
2089       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2090         true
2091       else
2092         notsupp="$notsupp $dir"
2093       fi
2094     fi
2095   fi
2096   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2097     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2098     if test -r $srcdir/$dirname/configure ; then
2099       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2100         true
2101       else
2102         notsupp="$notsupp $dir"
2103       fi
2104     fi
2105   fi
2106   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2107     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2108     if test -r $srcdir/$dirname/configure ; then
2109       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2110         true
2111       else
2112         notsupp="$notsupp $dir"
2113       fi
2114     fi
2115   fi
2116 done
2117
2118 # Quietly strip out all directories which aren't configurable in this tree.
2119 # This relies on all configurable subdirectories being autoconfiscated, which
2120 # is now the case.
2121 build_configdirs_all="$build_configdirs"
2122 build_configdirs=
2123 for i in ${build_configdirs_all} ; do
2124   j=`echo $i | sed -e s/build-//g`
2125   if test -f ${srcdir}/$j/configure ; then
2126     build_configdirs="${build_configdirs} $i"
2127   fi
2128 done
2129
2130 configdirs_all="$configdirs"
2131 configdirs=
2132 for i in ${configdirs_all} ; do
2133   if test -f ${srcdir}/$i/configure ; then
2134     configdirs="${configdirs} $i"
2135   fi
2136 done
2137
2138 target_configdirs_all="$target_configdirs"
2139 target_configdirs=
2140 for i in ${target_configdirs_all} ; do
2141   j=`echo $i | sed -e s/target-//g`
2142   if test -f ${srcdir}/$j/configure ; then
2143     target_configdirs="${target_configdirs} $i"
2144   fi
2145 done
2146
2147 # Produce a warning message for the subdirs we can't configure.
2148 # This isn't especially interesting in the Cygnus tree, but in the individual
2149 # FSF releases, it's important to let people know when their machine isn't
2150 # supported by the one or two programs in a package.
2151
2152 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2153   # If $appdirs is non-empty, at least one of those directories must still
2154   # be configured, or we error out.  (E.g., if the gas release supports a
2155   # specified target in some subdirs but not the gas subdir, we shouldn't
2156   # pretend that all is well.)
2157   if test -n "$appdirs" ; then
2158     for dir in $appdirs ; do
2159       if test -r $dir/Makefile.in ; then
2160         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2161           appdirs=""
2162           break
2163         fi
2164         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2165           appdirs=""
2166           break
2167         fi
2168       fi
2169     done
2170     if test -n "$appdirs" ; then
2171       echo "*** This configuration is not supported by this package." 1>&2
2172       exit 1
2173     fi
2174   fi
2175   # Okay, some application will build, or we don't care to check.  Still
2176   # notify of subdirs not getting built.
2177   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2178   echo "    ${notsupp}" 1>&2
2179   echo "    (Any other directories should still work fine.)" 1>&2
2180 fi
2181
2182 case "$host" in
2183   *msdosdjgpp*)
2184     enable_gdbtk=no ;;
2185 esac
2186
2187 # To find our prefix, in gcc_cv_tool_prefix.
2188 ACX_TOOL_DIRS
2189
2190 copy_dirs=
2191
2192 AC_ARG_WITH([build-sysroot],
2193   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2194                   [use sysroot as the system root during the build])],
2195   [if test x"$withval" != x ; then
2196      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2197    fi],
2198   [SYSROOT_CFLAGS_FOR_TARGET=])
2199 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2200
2201 AC_ARG_WITH([debug-prefix-map],
2202   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2203                   [map A to B, C to D ... in debug information])],
2204   [if test x"$withval" != x; then
2205      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2206      for debug_map in $withval; do
2207        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2208      done
2209    fi],
2210   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2211 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2212
2213 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2214 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2215 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2216 # We want to ensure that TARGET libraries (which we know are built with
2217 # gcc) are built with "-O2 -g", so include those options when setting
2218 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2219 if test "x$CFLAGS_FOR_TARGET" = x; then
2220   CFLAGS_FOR_TARGET=$CFLAGS
2221   case " $CFLAGS " in
2222     *" -O2 "*) ;;
2223     *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2224   esac
2225   case " $CFLAGS " in
2226     *" -g "* | *" -g3 "*) ;;
2227     *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2228   esac
2229 fi
2230 AC_SUBST(CFLAGS_FOR_TARGET)
2231
2232 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2233   CXXFLAGS_FOR_TARGET=$CXXFLAGS
2234   case " $CXXFLAGS " in
2235     *" -O2 "*) ;;
2236     *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2237   esac
2238   case " $CXXFLAGS " in
2239     *" -g "* | *" -g3 "*) ;;
2240     *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2241   esac
2242 fi
2243 AC_SUBST(CXXFLAGS_FOR_TARGET)
2244
2245 AC_SUBST(LDFLAGS_FOR_TARGET)
2246
2247 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2248 # the named directory are copied to $(tooldir)/sys-include.
2249 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2250   if test x${is_cross_compiler} = xno ; then
2251     echo 1>&2 '***' --with-headers is only supported when cross compiling
2252     exit 1
2253   fi
2254   if test x"${with_headers}" != xyes ; then
2255     x=${gcc_cv_tool_prefix}
2256     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2257   fi
2258 fi
2259
2260 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2261 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2262 # are permitted.
2263 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2264   if test x${is_cross_compiler} = xno ; then
2265     echo 1>&2 '***' --with-libs is only supported when cross compiling
2266     exit 1
2267   fi
2268   if test x"${with_libs}" != xyes ; then
2269     # Copy the libraries in reverse order, so that files in the first named
2270     # library override files in subsequent libraries.
2271     x=${gcc_cv_tool_prefix}
2272     for l in ${with_libs}; do
2273       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2274     done
2275   fi
2276 fi
2277
2278 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2279 #
2280 # This is done by determining whether or not the appropriate directory
2281 # is available, and by checking whether or not specific configurations
2282 # have requested that this magic not happen.
2283 #
2284 # The command line options always override the explicit settings in
2285 # configure.in, and the settings in configure.in override this magic.
2286 #
2287 # If the default for a toolchain is to use GNU as and ld, and you don't
2288 # want to do that, then you should use the --without-gnu-as and
2289 # --without-gnu-ld options for the configure script.  Similarly, if
2290 # the default is to use the included zlib and you don't want to do that,
2291 # you should use the --with-system-zlib option for the configure script.
2292
2293 if test x${use_gnu_as} = x &&
2294    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2295   with_gnu_as=yes
2296   extra_host_args="$extra_host_args --with-gnu-as"
2297 fi
2298
2299 if test x${use_gnu_ld} = x &&
2300    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2301   with_gnu_ld=yes
2302   extra_host_args="$extra_host_args --with-gnu-ld"
2303 fi
2304
2305 if test x${use_included_zlib} = x &&
2306    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2307   :
2308 else
2309   with_system_zlib=yes
2310   extra_host_args="$extra_host_args --with-system-zlib"
2311 fi
2312
2313 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2314 # can detect this case.
2315
2316 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2317   with_newlib=yes
2318   extra_host_args="$extra_host_args --with-newlib"
2319 fi
2320
2321 # Handle ${copy_dirs}
2322 set fnord ${copy_dirs}
2323 shift
2324 while test $# != 0 ; do
2325   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2326     :
2327   else
2328     echo Copying $1 to $2
2329
2330     # Use the install script to create the directory and all required
2331     # parent directories.
2332     if test -d $2 ; then
2333       :
2334     else
2335       echo >config.temp
2336       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2337     fi
2338
2339     # Copy the directory, assuming we have tar.
2340     # FIXME: Should we use B in the second tar?  Not all systems support it.
2341     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2342
2343     # It is the responsibility of the user to correctly adjust all
2344     # symlinks.  If somebody can figure out how to handle them correctly
2345     # here, feel free to add the code.
2346
2347     echo $1 > $2/COPIED
2348   fi
2349   shift; shift
2350 done
2351
2352 # Determine a target-dependent exec_prefix that the installed
2353 # gcc will search in.  Keep this list sorted by triplet, with
2354 # the *-*-osname triplets last.
2355 md_exec_prefix=
2356 case "${target}" in
2357   i[[34567]]86-pc-msdosdjgpp*)
2358     md_exec_prefix=/dev/env/DJDIR/bin
2359     ;;
2360   *-*-hpux* | \
2361   *-*-nto-qnx* | \
2362   *-*-solaris2*)
2363     md_exec_prefix=/usr/ccs/bin
2364     ;;
2365 esac
2366
2367 extra_arflags_for_target=
2368 extra_nmflags_for_target=
2369 extra_ranlibflags_for_target=
2370 target_makefile_frag=/dev/null
2371 case "${target}" in
2372   spu-*-*)
2373     target_makefile_frag="config/mt-spu"
2374     ;;
2375   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2376     target_makefile_frag="config/mt-sde"
2377     ;;
2378   mipsisa*-*-elfoabi*)
2379     target_makefile_frag="config/mt-mips-elfoabi"
2380     ;;
2381   mips*-*-*linux* | mips*-*-gnu*)
2382     target_makefile_frag="config/mt-mips-gnu"
2383     ;;
2384   nios2-*-elf*)
2385     target_makefile_frag="config/mt-nios2-elf"
2386     ;;
2387   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2388     target_makefile_frag="config/mt-gnu"
2389     ;;
2390   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2391     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2392     # commands to handle both 32-bit and 64-bit objects.  These flags are
2393     # harmless if we're using GNU nm or ar.
2394     extra_arflags_for_target=" -X32_64"
2395     extra_nmflags_for_target=" -B -X32_64"
2396     ;;
2397 esac
2398
2399 alphaieee_frag=/dev/null
2400 case $target in
2401   alpha*-*-*)
2402     # This just makes sure to use the -mieee option to build target libs.
2403     # This should probably be set individually by each library.
2404     alphaieee_frag="config/mt-alphaieee"
2405     ;;
2406 esac
2407
2408 # If --enable-target-optspace always use -Os instead of -O2 to build
2409 # the target libraries, similarly if it is not specified, use -Os
2410 # on selected platforms.
2411 ospace_frag=/dev/null
2412 case "${enable_target_optspace}:${target}" in
2413   yes:*)
2414     ospace_frag="config/mt-ospace"
2415     ;;
2416   :d30v-*)
2417     ospace_frag="config/mt-d30v"
2418     ;;
2419   :m32r-* | :d10v-* | :fr30-*)
2420     ospace_frag="config/mt-ospace"
2421     ;;
2422   no:* | :*)
2423     ;;
2424   *)
2425     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2426     ;;
2427 esac
2428
2429 # Some systems (e.g., one of the i386-aix systems the gas testers are
2430 # using) don't handle "\$" correctly, so don't use it here.
2431 tooldir='${exec_prefix}'/${target_noncanonical}
2432 build_tooldir=${tooldir}
2433
2434 # Create a .gdbinit file which runs the one in srcdir
2435 # and tells GDB to look there for source files.
2436
2437 if test -r ${srcdir}/.gdbinit ; then
2438   case ${srcdir} in
2439     .) ;;
2440     *) cat > ./.gdbinit <<EOF
2441 # ${NO_EDIT}
2442 dir ${srcdir}
2443 dir .
2444 source ${srcdir}/.gdbinit
2445 EOF
2446     ;;
2447   esac
2448 fi
2449
2450 # Make sure that the compiler is able to generate an executable.  If it
2451 # can't, we are probably in trouble.  We don't care whether we can run the
2452 # executable--we might be using a cross compiler--we only care whether it
2453 # can be created.  At this point the main configure script has set CC.
2454 we_are_ok=no
2455 echo "int main () { return 0; }" > conftest.c
2456 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2457 if test $? = 0 ; then
2458   if test -s conftest || test -s conftest.exe ; then
2459     we_are_ok=yes
2460   fi
2461 fi
2462 case $we_are_ok in
2463   no)
2464     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2465     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2466     rm -f conftest*
2467     exit 1
2468     ;;
2469 esac
2470 rm -f conftest*
2471
2472 # Decide which environment variable is used to find dynamic libraries.
2473 case "${host}" in
2474   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2475   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2476   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2477   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2478 esac
2479
2480 # On systems where the dynamic library environment variable is PATH,
2481 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2482 # built executables to PATH.
2483 if test "$RPATH_ENVVAR" = PATH; then
2484   GCC_SHLIB_SUBDIR=/shlib
2485 else
2486   GCC_SHLIB_SUBDIR=
2487 fi
2488
2489 # Adjust the toplevel makefile according to whether bootstrap was selected.
2490 case $enable_bootstrap in
2491   yes)
2492     bootstrap_suffix=bootstrap
2493     BUILD_CONFIG=bootstrap-debug
2494     ;;
2495   no)
2496     bootstrap_suffix=no-bootstrap
2497     BUILD_CONFIG=
2498     ;;
2499 esac
2500
2501 AC_MSG_CHECKING(for default BUILD_CONFIG)
2502
2503 AC_ARG_WITH([build-config],
2504   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2505                   [use config/NAME.mk build configuration])],
2506   [case $with_build_config in
2507    yes) with_build_config= ;;
2508    no) with_build_config= BUILD_CONFIG= ;;
2509    esac])
2510
2511 if test "x${with_build_config}" != x; then
2512   BUILD_CONFIG=$with_build_config
2513 else
2514   case $BUILD_CONFIG in
2515   bootstrap-debug)
2516     if echo "int f (void) { return 0; }" > conftest.c &&
2517        ${CC} -c conftest.c &&
2518        mv conftest.o conftest.o.g0 &&
2519        ${CC} -c -g conftest.c &&
2520        mv conftest.o conftest.o.g &&
2521        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2522       :
2523     else
2524       BUILD_CONFIG=
2525     fi
2526     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2527     ;;
2528   esac
2529 fi
2530 AC_MSG_RESULT($BUILD_CONFIG)
2531 AC_SUBST(BUILD_CONFIG)
2532
2533 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2534 AC_MSG_CHECKING([for --enable-vtable-verify])
2535 AC_ARG_ENABLE(vtable-verify,
2536 [  --enable-vtable-verify    Enable vtable verification feature ],
2537 [case "$enableval" in
2538  yes) enable_vtable_verify=yes ;;
2539  no)  enable_vtable_verify=no ;;
2540  *)   enable_vtable_verify=no;;
2541  esac],
2542 [enable_vtable_verify=no])
2543 AC_MSG_RESULT($enable_vtable_verify)
2544
2545 # Record target_configdirs and the configure arguments for target and
2546 # build configuration in Makefile.
2547 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2548 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2549 bootstrap_fixincludes=no
2550
2551 # If we are building libgomp, bootstrap it.
2552 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2553   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2554 fi
2555
2556 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2557 # or bootstrap-ubsan, bootstrap it.
2558 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2559   case "$BUILD_CONFIG" in
2560     *bootstrap-asan* | *bootstrap-ubsan* )
2561       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2562       bootstrap_fixincludes=yes
2563       ;;
2564   esac
2565 fi
2566
2567 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2568 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2569    test "$enable_vtable_verify" != no; then
2570   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2571 fi
2572
2573 # Determine whether gdb needs tk/tcl or not.
2574 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2575 # and in that case we want gdb to be built without tk.  Ugh!
2576 # In fact I believe gdb is the *only* package directly dependent on tk,
2577 # so we should be able to put the 'maybe's in unconditionally and
2578 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2579 # 100% sure that that's safe though.
2580
2581 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2582 case "$enable_gdbtk" in
2583   no)
2584     GDB_TK="" ;;
2585   yes)
2586     GDB_TK="${gdb_tk}" ;;
2587   *)
2588     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2589     # distro.  Eventually someone will fix this and move Insight, nee
2590     # gdbtk to a separate directory.
2591     if test -d ${srcdir}/gdb/gdbtk ; then
2592       GDB_TK="${gdb_tk}"
2593     else
2594       GDB_TK=""
2595     fi
2596     ;;
2597 esac
2598 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2599 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2600
2601 # Strip out unwanted targets.
2602
2603 # While at that, we remove Makefiles if we were started for recursive
2604 # configuration, so that the top-level Makefile reconfigures them,
2605 # like we used to do when configure itself was recursive.
2606
2607 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2608 # but now we're fixing up the Makefile ourselves with the additional
2609 # commands passed to AC_CONFIG_FILES.  Use separate variables
2610 # extrasub-{build,host,target} not because there is any reason to split
2611 # the substitutions up that way, but only to remain below the limit of
2612 # 99 commands in a script, for HP-UX sed.
2613 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2614
2615 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2616   yes:yes:*\ gold\ *:*,c++,*) ;;
2617   yes:yes:*\ gold\ *:*)
2618     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2619     ;;
2620 esac
2621
2622 extrasub_build=
2623 for module in ${build_configdirs} ; do
2624   if test -z "${no_recursion}" \
2625      && test -f ${build_subdir}/${module}/Makefile; then
2626     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2627     rm -f ${build_subdir}/${module}/Makefile
2628   fi
2629   extrasub_build="$extrasub_build
2630 /^@if build-$module\$/d
2631 /^@endif build-$module\$/d
2632 /^@if build-$module-$bootstrap_suffix\$/d
2633 /^@endif build-$module-$bootstrap_suffix\$/d"
2634 done
2635 extrasub_host=
2636 for module in ${configdirs} ; do
2637   if test -z "${no_recursion}"; then
2638     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2639       if test -f ${file}; then
2640         echo 1>&2 "*** removing ${file} to force reconfigure"
2641         rm -f ${file}
2642       fi
2643     done
2644   fi
2645   case ${module},${bootstrap_fixincludes} in
2646     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2647     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2648   esac
2649   extrasub_host="$extrasub_host
2650 /^@if $module\$/d
2651 /^@endif $module\$/d
2652 /^@if $module-$host_bootstrap_suffix\$/d
2653 /^@endif $module-$host_bootstrap_suffix\$/d"
2654 done
2655 extrasub_target=
2656 for module in ${target_configdirs} ; do
2657   if test -z "${no_recursion}" \
2658      && test -f ${target_subdir}/${module}/Makefile; then
2659     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2660     rm -f ${target_subdir}/${module}/Makefile
2661   fi
2662
2663   # We only bootstrap target libraries listed in bootstrap_target_libs.
2664   case $bootstrap_target_libs in
2665     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2666     *) target_bootstrap_suffix=no-bootstrap ;;
2667   esac
2668
2669   extrasub_target="$extrasub_target
2670 /^@if target-$module\$/d
2671 /^@endif target-$module\$/d
2672 /^@if target-$module-$target_bootstrap_suffix\$/d
2673 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2674 done
2675
2676 # Do the final fixup along with target modules.
2677 extrasub_target="$extrasub_target
2678 /^@if /,/^@endif /d"
2679
2680 # Create the serialization dependencies.  This uses a temporary file.
2681
2682 AC_ARG_ENABLE([serial-configure],
2683 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2684                 [force sequential configuration of
2685                  sub-packages for the host, target or build
2686                  machine, or all sub-packages])])
2687
2688 case ${enable_serial_configure} in
2689   yes)
2690     enable_serial_build_configure=yes
2691     enable_serial_host_configure=yes
2692     enable_serial_target_configure=yes
2693     ;;
2694 esac
2695
2696 # These force 'configure's to be done one at a time, to avoid problems
2697 # with contention over a shared config.cache.
2698 rm -f serdep.tmp
2699 echo '# serdep.tmp' > serdep.tmp
2700 olditem=
2701 test "x${enable_serial_build_configure}" = xyes &&
2702 for item in ${build_configdirs} ; do
2703   case ${olditem} in
2704     "") ;;
2705     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2706   esac
2707   olditem=${item}
2708 done
2709 olditem=
2710 test "x${enable_serial_host_configure}" = xyes &&
2711 for item in ${configdirs} ; do
2712   case ${olditem} in
2713     "") ;;
2714     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2715   esac
2716   olditem=${item}
2717 done
2718 olditem=
2719 test "x${enable_serial_target_configure}" = xyes &&
2720 for item in ${target_configdirs} ; do
2721   case ${olditem} in
2722     "") ;;
2723     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2724   esac
2725   olditem=${item}
2726 done
2727 serialization_dependencies=serdep.tmp
2728 AC_SUBST_FILE(serialization_dependencies)
2729
2730 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2731 # target, nonopt, and variable assignments.  These are the ones we
2732 # might not want to pass down to subconfigures.  The exception being
2733 # --cache-file=/dev/null, which is used to turn off the use of cache
2734 # files altogether, and which should be passed on to subconfigures.
2735 # Also strip program-prefix, program-suffix, and program-transform-name,
2736 # so that we can pass down a consistent program-transform-name.
2737 baseargs=
2738 tbaseargs=
2739 keep_next=no
2740 skip_next=no
2741 eval "set -- $ac_configure_args"
2742 for ac_arg
2743 do
2744   if test X"$skip_next" = X"yes"; then
2745     skip_next=no
2746     continue
2747   fi
2748   if test X"$keep_next" = X"yes"; then
2749     case $ac_arg in
2750       *\'*)
2751         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2752     esac
2753     baseargs="$baseargs '$ac_arg'"
2754     tbaseargs="$tbaseargs '$ac_arg'"
2755     keep_next=no
2756     continue
2757   fi
2758
2759   # Handle separated arguments.  Based on the logic generated by
2760   # autoconf 2.59.
2761   case $ac_arg in
2762     *=* | --config-cache | -C | -disable-* | --disable-* \
2763       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2764       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2765       | -with-* | --with-* | -without-* | --without-* | --x)
2766       separate_arg=no
2767       ;;
2768     -*)
2769       separate_arg=yes
2770       ;;
2771     *)
2772       separate_arg=no
2773       ;;
2774   esac
2775
2776   skip_targ=no
2777   case $ac_arg in
2778 changequote(,)
2779   --with-* | --without-*)
2780     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2781
2782     case $libopt in
2783     *[-_]include)
2784       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2785       ;;
2786     *[-_]lib)
2787       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2788       ;;
2789     *)
2790       lib=$libopt
2791       ;;
2792     esac
2793 changequote([,])
2794
2795     case $lib in
2796     mpc | mpfr | gmp | cloog)
2797       # If we're processing --with-$lib, --with-$lib-include or
2798       # --with-$lib-lib, for one of the libs above, and target is
2799       # different from host, don't pass the current argument to any
2800       # target library's configure.
2801       if test x$is_cross_compiler = xyes; then
2802         skip_targ=yes
2803       fi
2804       ;;
2805     esac
2806     ;;
2807   esac
2808
2809   case "$ac_arg" in
2810     --cache-file=/dev/null | \
2811     -cache-file=/dev/null )
2812       # Handled here to avoid the test to skip args below.
2813       baseargs="$baseargs '$ac_arg'"
2814       tbaseargs="$tbaseargs '$ac_arg'"
2815       # Assert: $separate_arg should always be no.
2816       keep_next=$separate_arg
2817       ;;
2818     --no*)
2819       continue
2820       ;;
2821     --c* | \
2822     --sr* | \
2823     --ho* | \
2824     --bu* | \
2825     --t* | \
2826     --program-* | \
2827     -cache_file* | \
2828     -srcdir* | \
2829     -host* | \
2830     -build* | \
2831     -target* | \
2832     -program-prefix* | \
2833     -program-suffix* | \
2834     -program-transform-name* )
2835       skip_next=$separate_arg
2836       continue
2837       ;;
2838     -*)
2839       # An option.  Add it.
2840       case $ac_arg in
2841         *\'*)
2842           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2843       esac
2844       baseargs="$baseargs '$ac_arg'"
2845       if test X"$skip_targ" = Xno; then
2846         tbaseargs="$tbaseargs '$ac_arg'"
2847       fi
2848       keep_next=$separate_arg
2849       ;;
2850     *)
2851       # Either a variable assignment, or a nonopt (triplet).  Don't
2852       # pass it down; let the Makefile handle this.
2853       continue
2854       ;;
2855   esac
2856 done
2857 # Remove the initial space we just introduced and, as these will be
2858 # expanded by make, quote '$'.
2859 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
2860
2861 # Add in --program-transform-name, after --program-prefix and
2862 # --program-suffix have been applied to it.  Autoconf has already
2863 # doubled dollar signs and backslashes in program_transform_name; we want
2864 # the backslashes un-doubled, and then the entire thing wrapped in single
2865 # quotes, because this will be expanded first by make and then by the shell.
2866 # Also, because we want to override the logic in subdir configure scripts to
2867 # choose program_transform_name, replace any s,x,x, with s,y,y,.
2868 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
2869 ${program_transform_name}
2870 EOF_SED
2871 gcc_transform_name=`cat conftestsed.out`
2872 rm -f conftestsed.out
2873 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
2874 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
2875 if test "$silent" = yes; then
2876   baseargs="$baseargs --silent"
2877   tbaseargs="$tbaseargs --silent"
2878 fi
2879 baseargs="$baseargs --disable-option-checking"
2880 tbaseargs="$tbaseargs --disable-option-checking"
2881
2882 # Record and document user additions to sub configure arguments.
2883 AC_ARG_VAR([build_configargs],
2884            [additional configure arguments for build directories])
2885 AC_ARG_VAR([host_configargs],
2886            [additional configure arguments for host directories])
2887 AC_ARG_VAR([target_configargs],
2888            [additional configure arguments for target directories])
2889
2890 # For the build-side libraries, we just need to pretend we're native,
2891 # and not use the same cache file.  Multilibs are neither needed nor
2892 # desired.
2893 build_configargs="$build_configargs --cache-file=../config.cache ${baseargs}"
2894
2895 # For host modules, accept cache file option, or specification as blank.
2896 case "${cache_file}" in
2897 "") # empty
2898   cache_file_option="" ;;
2899 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
2900   cache_file_option="--cache-file=${cache_file}" ;;
2901 *) # relative path
2902   cache_file_option="--cache-file=../${cache_file}" ;;
2903 esac
2904
2905 # Host dirs don't like to share a cache file either, horribly enough.
2906 # This seems to be due to autoconf 2.5x stupidity.
2907 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
2908
2909 target_configargs="$target_configargs ${tbaseargs}"
2910
2911 # Passing a --with-cross-host argument lets the target libraries know
2912 # whether they are being built with a cross-compiler or being built
2913 # native.  However, it would be better to use other mechanisms to make the
2914 # sorts of decisions they want to make on this basis.  Please consider
2915 # this option to be deprecated.  FIXME.
2916 if test x${is_cross_compiler} = xyes ; then
2917   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
2918 fi
2919
2920 # Special user-friendly check for native x86_64-linux build, if
2921 # multilib is not explicitly enabled.
2922 case "$target:$have_compiler:$host:$target:$enable_multilib" in
2923   x86_64-*linux*:yes:$build:$build:)
2924     # Make sure we have a developement environment that handles 32-bit
2925     dev64=no
2926     echo "int main () { return 0; }" > conftest.c
2927     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2928     if test $? = 0 ; then
2929       if test -s conftest || test -s conftest.exe ; then
2930         dev64=yes
2931       fi
2932     fi
2933     rm -f conftest*
2934     if test x${dev64} != xyes ; then
2935       AC_MSG_ERROR([I suspect your system does not have 32-bit developement 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.])
2936     fi
2937     ;;
2938 esac
2939
2940 # Default to --enable-multilib.
2941 if test x${enable_multilib} = x ; then
2942   target_configargs="--enable-multilib ${target_configargs}"
2943 fi
2944
2945 # Pass --with-newlib if appropriate.  Note that target_configdirs has
2946 # changed from the earlier setting of with_newlib.
2947 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
2948   target_configargs="--with-newlib ${target_configargs}"
2949 fi
2950
2951 # Different target subdirs use different values of certain variables
2952 # (notably CXX).  Worse, multilibs use *lots* of different values.
2953 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
2954 # it doesn't automatically accept command-line overrides of them.
2955 # This means it's not safe for target subdirs to share a cache file,
2956 # which is disgusting, but there you have it.  Hopefully this can be
2957 # fixed in future.  It's still worthwhile to use a cache file for each
2958 # directory.  I think.
2959
2960 # Pass the appropriate --build, --host, --target and --cache-file arguments.
2961 # We need to pass --target, as newer autoconf's requires consistency
2962 # for target_alias and gcc doesn't manage it consistently.
2963 target_configargs="--cache-file=./config.cache ${target_configargs}"
2964
2965 FLAGS_FOR_TARGET=
2966 case " $target_configdirs " in
2967  *" newlib "*)
2968   case " $target_configargs " in
2969   *" --with-newlib "*)
2970    case "$target" in
2971     *-cygwin*)
2972       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
2973       ;;
2974    esac
2975
2976    # If we're not building GCC, don't discard standard headers.
2977    if test -d ${srcdir}/gcc; then
2978      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
2979
2980      if test "${build}" != "${host}"; then
2981        # On Canadian crosses, CC_FOR_TARGET will have already been set
2982        # by `configure', so we won't have an opportunity to add -Bgcc/
2983        # to it.  This is right: we don't want to search that directory
2984        # for binaries, but we want the header files in there, so add
2985        # them explicitly.
2986        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
2987
2988        # Someone might think of using the pre-installed headers on
2989        # Canadian crosses, in case the installed compiler is not fully
2990        # compatible with the compiler being built.  In this case, it
2991        # would be better to flag an error than risking having
2992        # incompatible object files being constructed.  We can't
2993        # guarantee that an error will be flagged, but let's hope the
2994        # compiler will do it, when presented with incompatible header
2995        # files.
2996      fi
2997    fi
2998
2999    case "${target}-${is_cross_compiler}" in
3000    i[[3456789]]86-*-linux*-no)
3001       # Here host == target, so we don't need to build gcc,
3002       # so we don't want to discard standard headers.
3003       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3004       ;;
3005    *)
3006       # If we're building newlib, use its generic headers last, but search
3007       # for any libc-related directories first (so make it the last -B
3008       # switch).
3009       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3010
3011       # If we're building libgloss, find the startup file, simulator library
3012       # and linker script.
3013       case " $target_configdirs " in
3014         *" libgloss "*)
3015         # Look for startup file, simulator library and maybe linker script.
3016         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3017         # Look for libnosys.a in case the target needs it.
3018         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3019         # Most targets have the linker script in the source directory.
3020         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3021         ;;
3022       esac
3023       ;;
3024    esac
3025    ;;
3026   esac
3027   ;;
3028 esac
3029
3030 case "$target" in
3031   x86_64-*mingw* | *-w64-mingw*)
3032   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3033   # however, use a symlink named 'mingw' in ${prefix} .
3034     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3035     ;;
3036   *-mingw*)
3037   # MinGW can't be handled as Cygwin above since it does not use newlib.
3038     FLAGS_FOR_TARGET=$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'
3039     ;;
3040 esac
3041
3042 # Allow the user to override the flags for
3043 # our build compiler if desired.
3044 if test x"${build}" = x"${host}" ; then
3045   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3046   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3047   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3048 fi
3049
3050 # On Canadian crosses, we'll be searching the right directories for
3051 # the previously-installed cross compiler, so don't bother to add
3052 # flags for directories within the install tree of the compiler
3053 # being built; programs in there won't even run.
3054 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3055   # Search for pre-installed headers if nothing else fits.
3056   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3057 fi
3058
3059 if test "x${use_gnu_ld}" = x &&
3060    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3061   # Arrange for us to find uninstalled linker scripts.
3062   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3063 fi
3064
3065 # Search for other target-specific linker scripts and such.
3066 case "${target}" in
3067   mep*)
3068     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3069     ;;
3070 esac
3071
3072 # Makefile fragments.
3073 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3074 do
3075   eval fragval=\$$frag
3076   if test $fragval != /dev/null; then
3077     eval $frag=${srcdir}/$fragval
3078   fi
3079 done
3080 AC_SUBST_FILE(host_makefile_frag)
3081 AC_SUBST_FILE(target_makefile_frag)
3082 AC_SUBST_FILE(alphaieee_frag)
3083 AC_SUBST_FILE(ospace_frag)
3084
3085 # Miscellanea: directories, flags, etc.
3086 AC_SUBST(RPATH_ENVVAR)
3087 AC_SUBST(GCC_SHLIB_SUBDIR)
3088 AC_SUBST(tooldir)
3089 AC_SUBST(build_tooldir)
3090 AC_SUBST(CONFIGURE_GDB_TK)
3091 AC_SUBST(GDB_TK)
3092 AC_SUBST(INSTALL_GDB_TK)
3093
3094 # Build module lists & subconfigure args.
3095 AC_SUBST(build_configargs)
3096 AC_SUBST(build_configdirs)
3097
3098 # Host module lists & subconfigure args.
3099 AC_SUBST(host_configargs)
3100 AC_SUBST(configdirs)
3101 AC_SUBST(target_configdirs)
3102
3103 # Target module lists & subconfigure args.
3104 AC_SUBST(target_configargs)
3105
3106
3107 # Build tools.
3108 AC_SUBST(AR_FOR_BUILD)
3109 AC_SUBST(AS_FOR_BUILD)
3110 AC_SUBST(CC_FOR_BUILD)
3111 AC_SUBST(CFLAGS_FOR_BUILD)
3112 AC_SUBST(CXXFLAGS_FOR_BUILD)
3113 AC_SUBST(CXX_FOR_BUILD)
3114 AC_SUBST(DLLTOOL_FOR_BUILD)
3115 AC_SUBST(GCJ_FOR_BUILD)
3116 AC_SUBST(GFORTRAN_FOR_BUILD)
3117 AC_SUBST(GOC_FOR_BUILD)
3118 AC_SUBST(LDFLAGS_FOR_BUILD)
3119 AC_SUBST(LD_FOR_BUILD)
3120 AC_SUBST(NM_FOR_BUILD)
3121 AC_SUBST(RANLIB_FOR_BUILD)
3122 AC_SUBST(WINDMC_FOR_BUILD)
3123 AC_SUBST(WINDRES_FOR_BUILD)
3124
3125 # Generate default definitions for YACC, M4, LEX and other programs that run
3126 # on the build machine.  These are used if the Makefile can't locate these
3127 # programs in objdir.
3128 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3129
3130 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3131 case " $build_configdirs " in
3132   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3133 esac
3134
3135 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3136 case " $build_configdirs " in
3137   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3138 esac
3139
3140 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3141 case " $build_configdirs " in
3142   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3143 esac
3144
3145 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3146 case " $build_configdirs " in
3147   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3148   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3149 esac
3150
3151 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3152 case " $build_configdirs " in
3153   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3154 esac
3155
3156 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3157 case " $build_configdirs " in
3158   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3159   *)
3160 changequote(,)
3161     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3162     # higher, else we use the "missing" dummy.
3163     if ${MAKEINFO} --version \
3164        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3165       :
3166     else
3167       MAKEINFO="$MISSING makeinfo"
3168     fi
3169     ;;
3170 changequote([,])
3171 esac
3172
3173 # FIXME: expect and dejagnu may become build tools?
3174
3175 AC_CHECK_PROGS(EXPECT, expect, expect)
3176 case " $configdirs " in
3177   *" expect "*)
3178     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3179     ;;
3180 esac
3181
3182 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3183 case " $configdirs " in
3184   *" dejagnu "*)
3185     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3186     ;;
3187 esac
3188
3189
3190 # Host tools.
3191 NCN_STRICT_CHECK_TOOLS(AR, ar)
3192 NCN_STRICT_CHECK_TOOLS(AS, as)
3193 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3194 NCN_STRICT_CHECK_TOOLS(LD, ld)
3195 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3196 NCN_STRICT_CHECK_TOOLS(NM, nm)
3197 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3198 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3199 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3200 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3201 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3202 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3203 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3204 AC_SUBST(CC)
3205 AC_SUBST(CXX)
3206 AC_SUBST(CFLAGS)
3207 AC_SUBST(CXXFLAGS)
3208
3209 # Target tools.
3210 AC_ARG_WITH([build-time-tools],
3211   [AS_HELP_STRING([--with-build-time-tools=PATH],
3212                   [use given path to find target tools during the build])],
3213   [case x"$withval" in
3214      x/*) ;;
3215      *)
3216        with_build_time_tools=
3217        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3218        ;;
3219    esac],
3220   [with_build_time_tools=])
3221
3222 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3223 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3224 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3225 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3226 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3227 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3228
3229 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3230 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3231 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3232 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3233 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3234 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3235 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3236 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3237 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3238 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3239 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3240 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3241 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3242
3243 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3244
3245 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3246 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3247 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3248 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3249 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3250                 [gcc/xg++ -B$$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$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3251                 c++)
3252 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3253                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3254                 c++)
3255 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3256 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3257 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3258                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3259 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3260                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3261 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3262                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3263 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3264 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3265 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3266 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJDUMP, [binutils/objcopy])
3267 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3268 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3269 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3270 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3271 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3272 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3273
3274 AC_SUBST(FLAGS_FOR_TARGET)
3275 AC_SUBST(RAW_CXX_FOR_TARGET)
3276
3277 # Certain tools may need extra flags.
3278 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3279 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3280 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3281
3282 # When building target libraries, except in a Canadian cross, we use
3283 # the same toolchain as the compiler we just built.
3284 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3285 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3286 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3287 if test $host = $build; then
3288   case " $configdirs " in
3289     *" gcc "*)
3290       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3291       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3292       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3293       ;;
3294   esac
3295 fi
3296
3297 AC_SUBST(COMPILER_AS_FOR_TARGET)
3298 AC_SUBST(COMPILER_LD_FOR_TARGET)
3299 AC_SUBST(COMPILER_NM_FOR_TARGET)
3300
3301 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3302 AC_ARG_ENABLE(maintainer-mode,
3303 [AS_HELP_STRING([--enable-maintainer-mode],
3304                 [enable make rules and dependencies not useful
3305                  (and sometimes confusing) to the casual installer])],
3306       USE_MAINTAINER_MODE=$enableval,
3307       USE_MAINTAINER_MODE=no)
3308 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3309 AC_SUBST(MAINTAINER_MODE_TRUE)
3310 AC_SUBST(MAINTAINER_MODE_FALSE)
3311 if test "$USE_MAINTAINER_MODE" = yes; then
3312   MAINTAINER_MODE_TRUE=
3313   MAINTAINER_MODE_FALSE='#'
3314 else
3315   MAINTAINER_MODE_TRUE='#'
3316   MAINTAINER_MODE_FALSE=
3317 fi
3318 MAINT=$MAINTAINER_MODE_TRUE
3319 AC_SUBST(MAINT)dnl
3320
3321 # ---------------------
3322 # GCC bootstrap support
3323 # ---------------------
3324
3325 # Stage specific cflags for build.
3326 stage1_cflags="-g"
3327 case $build in
3328   vax-*-*)
3329     case ${GCC} in
3330       yes) stage1_cflags="-g -Wa,-J" ;;
3331       *) stage1_cflags="-g -J" ;;
3332     esac ;;
3333 esac
3334
3335 AC_SUBST(stage1_cflags)
3336
3337 # Enable --enable-checking in stage1 of the compiler.
3338 AC_ARG_ENABLE(stage1-checking,
3339 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3340                 [choose additional checking for stage1 of the compiler])],
3341 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3342 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3343   stage1_checking=--enable-checking=yes,types
3344 else
3345   stage1_checking=--enable-checking=$enable_checking,types
3346 fi])
3347 AC_SUBST(stage1_checking)
3348
3349 # Enable -Werror in bootstrap stage2 and later.
3350 AC_ARG_ENABLE(werror,
3351 [AS_HELP_STRING([--enable-werror],
3352                 [enable -Werror in bootstrap stage2 and later])], [],
3353 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3354   enable_werror=yes
3355 else
3356   enable_werror=no
3357 fi])
3358 case ${enable_werror} in
3359   yes) stage2_werror_flag="--enable-werror-always" ;;
3360   *) stage2_werror_flag="" ;;
3361 esac
3362 AC_SUBST(stage2_werror_flag)
3363
3364 # Enable --enable-host-shared.
3365 AC_ARG_ENABLE(host-shared,
3366 [AS_HELP_STRING([--enable-host-shared],
3367                 [build host code as shared libraries])],
3368 [host_shared=$enableval], [host_shared=no])
3369 AC_SUBST(host_shared)
3370
3371 # Specify what files to not compare during bootstrap.
3372
3373 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3374 case "$target" in
3375   hppa*64*-*-hpux*) ;;
3376   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3377   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3378 esac
3379 AC_SUBST(compare_exclusions)
3380
3381 AC_CONFIG_FILES([Makefile],
3382   [sed "$extrasub_build" Makefile |
3383    sed "$extrasub_host" |
3384    sed "$extrasub_target" > mf$$
3385    mv -f mf$$ Makefile],
3386   [extrasub_build="$extrasub_build"
3387    extrasub_host="$extrasub_host"
3388    extrasub_target="$extrasub_target"])
3389 AC_OUTPUT