gcc/configure.ac

   1 # configure.ac for GCC
   2 # Process this file with autoconf to generate a configuration script.
   3
   4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
   5 # Free Software Foundation, Inc.
   6
   7 #This file is part of GCC.
   8
   9 #GCC is free software; you can redistribute it and/or modify it under
  10 #the terms of the GNU General Public License as published by the Free
  11 #Software Foundation; either version 2, or (at your option) any later
  12 #version.
  13
  14 #GCC is distributed in the hope that it will be useful, but WITHOUT
  15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16 #FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17 #for more details.
  18
  19 #You should have received a copy of the GNU General Public License
  20 #along with GCC; see the file COPYING.  If not, write to the Free
  21 #Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  22 #02110-1301, USA.
  23
  24 # --------------------------------
  25 # Initialization and sanity checks
  26 # --------------------------------
  27
  28 AC_PREREQ(2.59)
  29 AC_INIT
  30 AC_CONFIG_SRCDIR(tree.c)
  31 AC_CONFIG_HEADER(auto-host.h:config.in)
  32
  33 gcc_version=`cat $srcdir/BASE-VER`
  34
  35 # Determine the host, build, and target systems
  36 AC_CANONICAL_BUILD
  37 AC_CANONICAL_HOST
  38 AC_CANONICAL_TARGET
  39
  40 # Determine the noncanonical target name, for directory use.
  41 ACX_NONCANONICAL_TARGET
  42
  43 # Determine the target- and build-specific subdirectories
  44 GCC_TOPLEV_SUBDIRS
  45
  46 # Set program_transform_name
  47 AC_ARG_PROGRAM
  48
  49 # Check for bogus environment variables.
  50 # Test if LIBRARY_PATH contains the notation for the current directory
  51 # since this would lead to problems installing/building glibc.
  52 # LIBRARY_PATH contains the current directory if one of the following
  53 # is true:
  54 # - one of the terminals (":" and ";") is the first or last sign
  55 # - two terminals occur directly after each other
  56 # - the path contains an element with a dot in it
  57 AC_MSG_CHECKING(LIBRARY_PATH variable)
  58 changequote(,)dnl
  59 case ${LIBRARY_PATH} in
  60   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  61     library_path_setting="contains current directory"
  62     ;;
  63   *)
  64     library_path_setting="ok"
  65     ;;
  66 esac
  67 changequote([,])dnl
  68 AC_MSG_RESULT($library_path_setting)
  69 if test "$library_path_setting" != "ok"; then
  70 AC_MSG_ERROR([
  71 *** LIBRARY_PATH shouldn't contain the current directory when
  72 *** building gcc. Please change the environment variable
  73 *** and run configure again.])
  74 fi
  75
  76 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
  77 # since this would lead to problems installing/building glibc.
  78 # GCC_EXEC_PREFIX contains the current directory if one of the following
  79 # is true:
  80 # - one of the terminals (":" and ";") is the first or last sign
  81 # - two terminals occur directly after each other
  82 # - the path contains an element with a dot in it
  83 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
  84 changequote(,)dnl
  85 case ${GCC_EXEC_PREFIX} in
  86   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  87     gcc_exec_prefix_setting="contains current directory"
  88     ;;
  89   *)
  90     gcc_exec_prefix_setting="ok"
  91     ;;
  92 esac
  93 changequote([,])dnl
  94 AC_MSG_RESULT($gcc_exec_prefix_setting)
  95 if test "$gcc_exec_prefix_setting" != "ok"; then
  96 AC_MSG_ERROR([
  97 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
  98 *** building gcc. Please change the environment variable
  99 *** and run configure again.])
 100 fi
 101
 102 # -----------
 103 # Directories
 104 # -----------
 105
 106 # Specify the local prefix
 107 local_prefix=
 108 AC_ARG_WITH(local-prefix,
 109 [  --with-local-prefix=DIR specifies directory to put local include],
 110 [case "${withval}" in
 111 yes)    AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
 112 no)     ;;
 113 *)      local_prefix=$with_local_prefix ;;
 114 esac])
 115
 116 # Default local prefix if it is empty
 117 if test x$local_prefix = x; then
 118         local_prefix=/usr/local
 119 fi
 120
 121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
 122 # passed in by the toplevel make and thus we'd get different behavior
 123 # depending on where we built the sources.
 124 gcc_gxx_include_dir=
 125 # Specify the g++ header file directory
 126 AC_ARG_WITH(gxx-include-dir,
 127 [  --with-gxx-include-dir=DIR
 128                           specifies directory to put g++ header files],
 129 [case "${withval}" in
 130 yes)    AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
 131 no)     ;;
 132 *)      gcc_gxx_include_dir=$with_gxx_include_dir ;;
 133 esac])
 134
 135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
 136 if test x${gcc_gxx_include_dir} = x; then
 137   if test x${enable_version_specific_runtime_libs} = xyes; then
 138     gcc_gxx_include_dir='${libsubdir}/include/c++'
 139   else
 140     libstdcxx_incdir='include/c++/$(version)'
 141     if test x$host != x$target; then
 142        libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
 143     fi
 144 changequote(<<, >>)dnl
 145     gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/$libstdcxx_incdir"
 146 changequote([, ])dnl
 147   fi
 148 fi
 149
 150 AC_ARG_WITH(cpp_install_dir,
 151 [  --with-cpp-install-dir=DIR
 152                           install the user visible C preprocessor in DIR
 153                           (relative to PREFIX) as well as PREFIX/bin],
 154 [if test x$withval = xyes; then
 155   AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
 156 elif test x$withval != xno; then
 157   cpp_install_dir=$withval
 158 fi])
 159
 160 # We would like to our source tree to be readonly.  However when releases or
 161 # pre-releases are generated, the flex/bison generated files as well as the
 162 # various formats of manuals need to be included along with the rest of the
 163 # sources.  Therefore we have --enable-generated-files-in-srcdir to do
 164 # just that.
 165
 166 AC_MSG_CHECKING([whether to place generated files in the source directory])
 167   dnl generated-files-in-srcdir is disabled by default
 168   AC_ARG_ENABLE(generated-files-in-srcdir,
 169 [  --enable-generated-files-in-srcdir
 170                           put copies of generated files in source dir
 171                           intended for creating source tarballs for users
 172                           without texinfo bison or flex.],
 173       generated_files_in_srcdir=$enableval,
 174       generated_files_in_srcdir=no)
 175
 176 AC_MSG_RESULT($generated_files_in_srcdir)
 177
 178 if test "$generated_files_in_srcdir" = "yes"; then
 179   GENINSRC=''
 180 else
 181   GENINSRC='#'
 182 fi
 183 AC_SUBST(GENINSRC)
 184
 185 # -------------------
 186 # Find default linker
 187 # -------------------
 188
 189 # With GNU ld
 190 AC_ARG_WITH(gnu-ld,
 191 [  --with-gnu-ld           arrange to work with GNU ld.],
 192 gnu_ld_flag="$with_gnu_ld",
 193 gnu_ld_flag=no)
 194
 195 # With pre-defined ld
 196 AC_ARG_WITH(ld,
 197 [  --with-ld               arrange to use the specified ld (full pathname)],
 198 DEFAULT_LINKER="$with_ld")
 199 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 200   if test ! -x "$DEFAULT_LINKER"; then
 201     AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
 202   elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 203     gnu_ld_flag=yes
 204   fi
 205   AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
 206         [Define to enable the use of a default linker.])
 207 fi
 208
 209 AC_MSG_CHECKING([whether a default linker was specified])
 210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 211   if test x"$gnu_ld_flag" = x"no"; then
 212     AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
 213   else
 214     AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
 215   fi
 216 else
 217   AC_MSG_RESULT(no)
 218 fi
 219
 220 # With demangler in GNU ld
 221 AC_ARG_WITH(demangler-in-ld,
 222 [  --with-demangler-in-ld  try to use demangler in GNU ld.],
 223 demangler_in_ld="$with_demangler_in_ld",
 224 demangler_in_ld=no)
 225
 226 # ----------------------
 227 # Find default assembler
 228 # ----------------------
 229
 230 # With GNU as
 231 AC_ARG_WITH(gnu-as,
 232 [  --with-gnu-as           arrange to work with GNU as],
 233 gas_flag="$with_gnu_as",
 234 gas_flag=no)
 235
 236 AC_ARG_WITH(as,
 237 [  --with-as               arrange to use the specified as (full pathname)],
 238 DEFAULT_ASSEMBLER="$with_as")
 239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 240   if test ! -x "$DEFAULT_ASSEMBLER"; then
 241     AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
 242   elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 243     gas_flag=yes
 244   fi
 245   AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
 246         [Define to enable the use of a default assembler.])
 247 fi
 248
 249 AC_MSG_CHECKING([whether a default assembler was specified])
 250 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 251   if test x"$gas_flag" = x"no"; then
 252     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
 253   else
 254     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
 255   fi
 256 else
 257   AC_MSG_RESULT(no)
 258 fi
 259
 260 # ---------------
 261 # Find C compiler
 262 # ---------------
 263
 264 # If a non-executable a.out is present (e.g. created by GNU as above even if
 265 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
 266 # file, even when creating an executable, so an execution test fails.
 267 # Remove possible default executable files to avoid this.
 268 #
 269 # FIXME: This really belongs into AC_PROG_CC and can be removed once
 270 # Autoconf includes it.
 271 rm -f a.out a.exe b.out
 272
 273 # Find the native compiler
 274 AC_PROG_CC
 275 AM_PROG_CC_C_O
 276 # autoconf is lame and doesn't give us any substitution variable for this.
 277 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 278   NO_MINUS_C_MINUS_O=yes
 279 else
 280   OUTPUT_OPTION='-o $@'
 281 fi
 282 AC_SUBST(NO_MINUS_C_MINUS_O)
 283 AC_SUBST(OUTPUT_OPTION)
 284
 285 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
 286 # optimizations to be activated explicitly by the toplevel.
 287 case "$CC" in
 288   */prev-gcc/xgcc*) ;;
 289   *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
 290 esac
 291 AC_SUBST(CFLAGS)
 292
 293 # -------------------------
 294 # Check C compiler features
 295 # -------------------------
 296
 297 AC_PROG_CPP
 298 AC_C_INLINE
 299
 300 # sizeof(char) is 1 by definition.
 301 AC_CHECK_SIZEOF(void *)
 302 AC_CHECK_SIZEOF(short)
 303 AC_CHECK_SIZEOF(int)
 304 AC_CHECK_SIZEOF(long)
 305 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
 306 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
 307
 308 # ---------------------
 309 # Warnings and checking
 310 # ---------------------
 311
 312 # Check $CC warning features (if it's GCC).
 313 # We want to use -pedantic, but we don't want warnings about
 314 # * 'long long'
 315 # * variadic macros
 316 # * overlong strings
 317 # So, we only use -pedantic if we can disable those warnings.
 318
 319 AC_CACHE_CHECK(
 320   [whether ${CC} accepts -Wno-long-long],
 321   [ac_cv_prog_cc_w_no_long_long],
 322   [save_CFLAGS="$CFLAGS"
 323   CFLAGS="-Wno-long-long"
 324   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 325                     [ac_cv_prog_cc_w_no_long_long=yes],
 326                     [ac_cv_prog_cc_w_no_long_long=no])
 327   CFLAGS="$save_CFLAGS"
 328   ])
 329
 330 AC_CACHE_CHECK(
 331   [whether ${CC} accepts -Wno-variadic-macros],
 332   [ac_cv_prog_cc_w_no_variadic_macros],
 333   [save_CFLAGS="$CFLAGS"
 334   CFLAGS="-Wno-variadic-macros"
 335   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 336                     [ac_cv_prog_cc_w_no_variadic_macros=yes],
 337                     [ac_cv_prog_cc_w_no_variadic_macros=no])
 338   CFLAGS="$save_CFLAGS"
 339   ])
 340
 341 AC_CACHE_CHECK(
 342   [whether ${CC} accepts -Wno-overlength-strings],
 343   [ac_cv_prog_cc_w_no_overlength_strings],
 344   [save_CFLAGS="$CFLAGS"
 345   CFLAGS="-Wno-overlength-strings"
 346   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 347                     [ac_cv_prog_cc_w_no_overlength_strings=yes],
 348                     [ac_cv_prog_cc_w_no_overlength_strings=no])
 349   CFLAGS="$save_CFLAGS"
 350   ])
 351
 352 strict1_warn=
 353 if test $ac_cv_prog_cc_w_no_long_long = yes \
 354    && test $ac_cv_prog_cc_w_no_variadic_macros = yes \
 355    && test $ac_cv_prog_cc_w_no_overlength_strings = yes ; then
 356   strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings"
 357 fi
 358
 359 # Add -Wold-style-definition if it's accepted
 360 AC_CACHE_CHECK(
 361   [whether ${CC} accepts -Wold-style-definition],
 362   [ac_cv_prog_cc_w_old_style_definition],
 363   [save_CFLAGS="$CFLAGS"
 364   CFLAGS="-Wold-style-definition"
 365   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 366                     [ac_cv_prog_cc_w_old_style_definition=yes],
 367                     [ac_cv_prog_cc_w_old_style_definition=no])
 368   CFLAGS="$save_CFLAGS"
 369   ])
 370 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
 371   strict1_warn="${strict1_warn} -Wold-style-definition"
 372 fi
 373
 374 # Add -Wmissing-format-attribute if it's accepted
 375 AC_CACHE_CHECK(
 376   [whether ${CC} accepts -Wmissing-format-attribute],
 377   [ac_cv_prog_cc_w_missing_format_attribute],
 378   [save_CFLAGS="$CFLAGS"
 379   CFLAGS="-Wmissing-format-attribute"
 380   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 381                     [ac_cv_prog_cc_w_missing_format_attribute=yes],
 382                     [ac_cv_prog_cc_w_missing_format_attribute=no])
 383   CFLAGS="$save_CFLAGS"
 384   ])
 385 if test $ac_cv_prog_cc_w_missing_format_attribute = yes ; then
 386   strict1_warn="${strict1_warn} -Wmissing-format-attribute"
 387 fi
 388
 389 # Enable -Werror, period.
 390 AC_ARG_ENABLE(werror_always,
 391 [  --enable-werror-always         enable -Werror always], [],
 392 [enable_werror_always=no])
 393 if test x${enable_werror_always} = xyes ; then
 394   strict1_warn="${strict1_warn} -Werror"
 395   WERROR=-Werror
 396 fi
 397
 398 AC_SUBST(strict1_warn)
 399
 400 # Get C++ compatibility warning flag, if supported.
 401 AC_CACHE_CHECK(
 402   [whether ${CC} accepts -Wc++-compat],
 403   [ac_cv_prog_cc_w_cxx_compat],
 404   [save_CFLAGS="$CFLAGS"
 405   CFLAGS="-Wc++-compat"
 406   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 407                     [ac_cv_prog_cc_w_cxx_compat=yes],
 408                     [ac_cv_prog_cc_w_cxx_compat=no])
 409   CFLAGS="$save_CFLAGS"
 410   ])
 411 if test x${ac_cv_prog_cc_w_cxx_compat} = xyes; then
 412   cxx_compat_warn="-Wc++-compat"
 413 fi
 414 AC_SUBST(cxx_compat_warn)
 415
 416
 417 # If the native compiler is GCC, we can enable warnings even in stage1.
 418 # That's useful for people building cross-compilers, or just running a
 419 # quick `make'.
 420 warn_cflags=
 421 if test "x$GCC" = "xyes"; then
 422   warn_cflags='$(GCC_WARN_CFLAGS)'
 423 fi
 424 AC_SUBST(warn_cflags)
 425
 426 # Enable -Werror in bootstrap stage2 and later.
 427 is_release=
 428 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
 429   is_release=yes
 430 fi
 431 AC_ARG_ENABLE(werror,
 432 [  --enable-werror         enable -Werror in bootstrap stage2 and later], [],
 433 [if test x$is_release = x ; then
 434   # Default to "yes" on development branches.
 435   enable_werror=yes
 436 else
 437   # Default to "no" on release branches.
 438   enable_werror=no
 439 fi])
 440 if test x$enable_werror = xyes ; then
 441   WERROR=-Werror
 442 fi
 443 AC_SUBST(WERROR)
 444
 445 # Enable expensive internal checks
 446 AC_ARG_ENABLE(checking,
 447 [  --enable-checking[=LIST]
 448                           enable expensive run-time checks.  With LIST,
 449                           enable only specific categories of checks.
 450                           Categories are: yes,no,all,none,release.
 451                           Flags are: assert,fold,gc,gcac,misc,
 452                           rtlflag,rtl,runtime,tree,valgrind.],
 453 [ac_checking_flags="${enableval}"],[
 454 # Determine the default checks.
 455 if test x$is_release = x ; then
 456   ac_checking_flags=yes
 457 else
 458   ac_checking_flags=release
 459 fi])
 460 ac_assert_checking=1
 461 ac_checking=
 462 ac_fold_checking=
 463 ac_gc_checking=
 464 ac_gc_always_collect=
 465 ac_rtl_checking=
 466 ac_rtlflag_checking=
 467 ac_runtime_checking=1
 468 ac_tree_checking=
 469 ac_valgrind_checking=
 470 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 471 for check in $ac_checking_flags
 472 do
 473         case $check in
 474         # these set all the flags to specific states
 475         yes)            ac_assert_checking=1 ; ac_checking=1 ;
 476                         ac_fold_checking= ; ac_gc_checking=1 ;
 477                         ac_gc_always_collect= ; ac_rtl_checking= ;
 478                         ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
 479                         ac_tree_checking=1 ; ac_valgrind_checking= ;;
 480         no|none)        ac_assert_checking= ; ac_checking= ;
 481                         ac_fold_checking= ; ac_gc_checking= ;
 482                         ac_gc_always_collect= ; ac_rtl_checking= ;
 483                         ac_rtlflag_checking= ; ac_runtime_checking= ;
 484                         ac_tree_checking= ; ac_valgrind_checking= ;;
 485         all)            ac_assert_checking=1 ; ac_checking=1 ;
 486                         ac_fold_checking=1 ; ac_gc_checking=1 ;
 487                         ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
 488                         ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
 489                         ac_tree_checking=1 ; ac_valgrind_checking= ;;
 490         release)        ac_assert_checking=1 ; ac_checking= ;
 491                         ac_fold_checking= ; ac_gc_checking= ;
 492                         ac_gc_always_collect= ; ac_rtl_checking= ;
 493                         ac_rtlflag_checking= ; ac_runtime_checking=1 ;
 494                         ac_tree_checking= ; ac_valgrind_checking= ;;
 495         # these enable particular checks
 496         assert)         ac_assert_checking=1 ;;
 497         fold)           ac_fold_checking=1 ;;
 498         gc)             ac_gc_checking=1 ;;
 499         gcac)           ac_gc_always_collect=1 ;;
 500         misc)           ac_checking=1 ;;
 501         rtl)            ac_rtl_checking=1 ;;
 502         rtlflag)        ac_rtlflag_checking=1 ;;
 503         runtime)        ac_runtime_checking=1 ;;
 504         tree)           ac_tree_checking=1 ;;
 505         valgrind)       ac_valgrind_checking=1 ;;
 506         *)      AC_MSG_ERROR(unknown check category $check) ;;
 507         esac
 508 done
 509 IFS="$ac_save_IFS"
 510
 511 nocommon_flag=""
 512 if test x$ac_checking != x ; then
 513   AC_DEFINE(ENABLE_CHECKING, 1,
 514 [Define if you want more run-time sanity checks.  This one gets a grab
 515    bag of miscellaneous but relatively cheap checks.])
 516   nocommon_flag=-fno-common
 517 fi
 518 AC_SUBST(nocommon_flag)
 519 if test x$ac_assert_checking != x ; then
 520   AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
 521 [Define if you want assertions enabled.  This is a cheap check.])
 522 fi
 523 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
 524 if test x$ac_runtime_checking != x ; then
 525   AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
 526 [Define if you want runtime assertions enabled.  This is a cheap check.])
 527 fi
 528 if test x$ac_tree_checking != x ; then
 529   AC_DEFINE(ENABLE_TREE_CHECKING, 1,
 530 [Define if you want all operations on trees (the basic data
 531    structure of the front ends) to be checked for dynamic type safety
 532    at runtime.  This is moderately expensive.  The tree browser debugging
 533    routines will also be enabled by this option.
 534    ])
 535   TREEBROWSER=tree-browser.o
 536 fi
 537 AC_SUBST(TREEBROWSER)
 538 if test x$ac_rtl_checking != x ; then
 539   AC_DEFINE(ENABLE_RTL_CHECKING, 1,
 540 [Define if you want all operations on RTL (the basic data structure
 541    of the optimizer and back end) to be checked for dynamic type safety
 542    at runtime.  This is quite expensive.])
 543 fi
 544 if test x$ac_rtlflag_checking != x ; then
 545   AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
 546 [Define if you want RTL flag accesses to be checked against the RTL
 547    codes that are supported for each access macro.  This is relatively
 548    cheap.])
 549 fi
 550 if test x$ac_gc_checking != x ; then
 551   AC_DEFINE(ENABLE_GC_CHECKING, 1,
 552 [Define if you want the garbage collector to do object poisoning and
 553    other memory allocation checks.  This is quite expensive.])
 554 fi
 555 if test x$ac_gc_always_collect != x ; then
 556   AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
 557 [Define if you want the garbage collector to operate in maximally
 558    paranoid mode, validating the entire heap and collecting garbage at
 559    every opportunity.  This is extremely expensive.])
 560 fi
 561 if test x$ac_fold_checking != x ; then
 562   AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
 563 [Define if you want fold checked that it never destructs its argument.
 564    This is quite expensive.])
 565 fi
 566 valgrind_path_defines=
 567 valgrind_command=
 568
 569 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
 570 dnl # an if statement.  This was the source of very frustrating bugs
 571 dnl # in converting to autoconf 2.5x!
 572 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
 573
 574 if test x$ac_valgrind_checking != x ; then
 575   # It is certainly possible that there's valgrind but no valgrind.h.
 576   # GCC relies on making annotations so we must have both.
 577   AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
 578   AC_PREPROC_IFELSE([AC_LANG_SOURCE(
 579     [[#include <valgrind/memcheck.h>
 580 #ifndef VALGRIND_DISCARD
 581 #error VALGRIND_DISCARD not defined
 582 #endif]])],
 583   [gcc_cv_header_valgrind_memcheck_h=yes],
 584   [gcc_cv_header_valgrind_memcheck_h=no])
 585   AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
 586   AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
 587   AC_PREPROC_IFELSE([AC_LANG_SOURCE(
 588     [[#include <memcheck.h>
 589 #ifndef VALGRIND_DISCARD
 590 #error VALGRIND_DISCARD not defined
 591 #endif]])],
 592   [gcc_cv_header_memcheck_h=yes],
 593   [gcc_cv_header_memcheck_h=no])
 594   AC_MSG_RESULT($gcc_cv_header_memcheck_h)
 595   AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
 596         [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
 597   if test "x$valgrind_path" = "x" \
 598     || (test $have_valgrind_h = no \
 599         && test $gcc_cv_header_memcheck_h = no \
 600         && test $gcc_cv_header_valgrind_memcheck_h = no); then
 601         AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
 602   fi
 603   valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
 604   valgrind_command="$valgrind_path -q"
 605   AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
 606 [Define if you want to run subprograms and generated programs
 607    through valgrind (a memory checker).  This is extremely expensive.])
 608   if test $gcc_cv_header_valgrind_memcheck_h = yes; then
 609     AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
 610         [Define if valgrind's valgrind/memcheck.h header is installed.])
 611   fi
 612   if test $gcc_cv_header_memcheck_h = yes; then
 613     AC_DEFINE(HAVE_MEMCHECK_H, 1,
 614         [Define if valgrind's memcheck.h header is installed.])
 615   fi
 616 fi
 617 AC_SUBST(valgrind_path_defines)
 618 AC_SUBST(valgrind_command)
 619
 620 AC_ARG_ENABLE(mapped-location,
 621 [  --enable-mapped-location   location_t is fileline integer cookie],,
 622 enable_mapped_location=no)
 623
 624 if test "$enable_mapped_location" = yes ; then
 625   AC_DEFINE(USE_MAPPED_LOCATION, 1,
 626 [Define if location_t is fileline integer cookie.])
 627 fi
 628
 629 # Enable code coverage collection
 630 AC_ARG_ENABLE(coverage,
 631 [  --enable-coverage[=LEVEL]
 632                           enable compiler's code coverage collection.
 633                           Use to measure compiler performance and locate
 634                           unused parts of the compiler. With LEVEL, specify
 635                           optimization. Values are opt, noopt,
 636                           default is noopt],
 637 [case "${enableval}" in
 638   yes|noopt)
 639     coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
 640     ;;
 641   opt)
 642     coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
 643     ;;
 644   no)
 645     # a.k.a. --disable-coverage
 646     coverage_flags=""
 647     ;;
 648   *)
 649     AC_MSG_ERROR(unknown coverage setting $enableval)
 650     ;;
 651 esac],
 652 [coverage_flags=""])
 653 AC_SUBST(coverage_flags)
 654
 655 AC_ARG_ENABLE(gather-detailed-mem-stats,
 656 [  --enable-gather-detailed-mem-stats         enable detailed memory allocation stats gathering], [],
 657 [enable_gather_detailed_mem_stats=no])
 658 if test x$enable_gather_detailed_mem_stats = xyes ; then
 659   AC_DEFINE(GATHER_STATISTICS, 1,
 660         [Define to enable detailed memory allocation stats gathering.])
 661 fi
 662
 663 # -------------------------------
 664 # Miscenalleous configure options
 665 # -------------------------------
 666
 667 # With stabs
 668 AC_ARG_WITH(stabs,
 669 [  --with-stabs            arrange to use stabs instead of host debug format],
 670 stabs="$with_stabs",
 671 stabs=no)
 672
 673 # Determine whether or not multilibs are enabled.
 674 AC_ARG_ENABLE(multilib,
 675 [  --enable-multilib       enable library support for multiple ABIs],
 676 [], [enable_multilib=yes])
 677 AC_SUBST(enable_multilib)
 678
 679 # Enable __cxa_atexit for C++.
 680 AC_ARG_ENABLE(__cxa_atexit,
 681 [  --enable-__cxa_atexit   enable __cxa_atexit for C++],
 682 [], [])
 683
 684 # Enable C extension for decimal float if target supports it.
 685 AC_ARG_ENABLE(decimal-float,
 686 [  --enable-decimal-float  enable decimal float extension to C],
 687 [
 688   if test x$enablevar = xyes ; then
 689     case $target in
 690     powerpc*-*-linux* | i?86*-*-linux*)
 691       enable_decimal_float=yes
 692       ;;
 693     *)
 694       AC_MSG_WARN(decimal float is not supported for this target, ignored)
 695       enable_decimal_float=no
 696       ;;
 697     esac
 698   fi
 699 ], [enable_decimal_float=no])
 700
 701 AC_SUBST(enable_decimal_float)
 702
 703 dfp=`if test $enable_decimal_float = yes; then echo 1; else echo 0; fi`
 704 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
 705 [Define to 1 to enable decimal float extension to C.])
 706
 707 # Enable threads
 708 # Pass with no value to take the default
 709 # Pass with a value to specify a thread package
 710 AC_ARG_ENABLE(threads,
 711 [  --enable-threads        enable thread usage for target GCC
 712   --enable-threads=LIB    use LIB thread package for target GCC],,
 713 [enable_threads=''])
 714
 715 AC_ARG_ENABLE(tls,
 716 [  --enable-tls            enable or disable generation of tls code
 717                           overriding the assembler check for tls support],
 718 [
 719   case $enable_tls in
 720     yes | no) ;;
 721     *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
 722 Valid choices are 'yes' and 'no'.]) ;;
 723   esac
 724 ], [enable_tls=''])
 725
 726 AC_ARG_ENABLE(objc-gc,
 727 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
 728                           the GNU Objective-C runtime],
 729 if test x$enable_objc_gc = xno; then
 730         objc_boehm_gc=''
 731 else
 732         objc_boehm_gc=1
 733 fi,
 734 objc_boehm_gc='')
 735
 736 AC_ARG_WITH(dwarf2,
 737 [  --with-dwarf2           force the default debug format to be DWARF 2],
 738 dwarf2="$with_dwarf2",
 739 dwarf2=no)
 740
 741 AC_ARG_ENABLE(shared,
 742 [  --disable-shared        don't provide a shared libgcc],
 743 [
 744   case $enable_shared in
 745   yes | no) ;;
 746   *)
 747     enable_shared=no
 748     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 749     for pkg in $enableval; do
 750       if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
 751         enable_shared=yes
 752       fi
 753     done
 754     IFS="$ac_save_ifs"
 755     ;;
 756   esac
 757 ], [enable_shared=yes])
 758 AC_SUBST(enable_shared)
 759
 760 AC_ARG_WITH(build-sysroot,
 761   [  --with-build-sysroot=sysroot
 762                           use sysroot as the system root during the build])
 763
 764 AC_ARG_WITH(sysroot,
 765 [  --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
 766 [
 767  case ${with_sysroot} in
 768  yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
 769  *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
 770  esac
 771
 772  TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
 773  CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
 774
 775  if test "x$exec_prefix" = xNONE; then
 776   if test "x$prefix" = xNONE; then
 777    test_prefix=/usr/local
 778   else
 779    test_prefix=$prefix
 780   fi
 781  else
 782   test_prefix=$exec_prefix
 783  fi
 784  case ${TARGET_SYSTEM_ROOT} in
 785  "${test_prefix}"|"${test_prefix}/"*|\
 786  '${exec_prefix}'|'${exec_prefix}/'*)
 787    t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
 788    TARGET_SYSTEM_ROOT_DEFINE="$t"
 789    ;;
 790  esac
 791 ], [
 792  TARGET_SYSTEM_ROOT=
 793  TARGET_SYSTEM_ROOT_DEFINE=
 794  CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
 795 ])
 796 AC_SUBST(TARGET_SYSTEM_ROOT)
 797 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
 798 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
 799
 800 # Build with intermodule optimisations
 801 AC_ARG_ENABLE(intermodule,
 802 [  --enable-intermodule    build the compiler in one step],
 803 [case ${enable_intermodule} in
 804   yes) onestep="-onestep";;
 805   *) onestep="";;
 806 esac],
 807 [onestep=""])
 808 AC_SUBST(onestep)
 809
 810 # Sanity check enable_languages in case someone does not run the toplevel
 811 # configure # script.
 812 AC_ARG_ENABLE(languages,
 813 [  --enable-languages=LIST specify which front-ends to build],
 814 [case ,${enable_languages}, in
 815        ,,|,yes,)
 816                 # go safe -- we cannot be much sure without the toplevel
 817                 # configure's
 818                 # analysis of which target libs are present and usable
 819                 enable_languages=c
 820                 ;;
 821          *,all,*)
 822                 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
 823                 ;;
 824         *,c,*)
 825                 ;;
 826         *)
 827                 enable_languages=c,${enable_languages}
 828                 ;;
 829 esac],
 830 [enable_languages=c])
 831
 832 # Used by documentation targets
 833 AC_SUBST(datarootdir)
 834 AC_SUBST(docdir)
 835 AC_SUBST(htmldir)
 836
 837 # -------------------------
 838 # Checks for other programs
 839 # -------------------------
 840
 841 AC_PROG_MAKE_SET
 842
 843 # Find some useful tools
 844 AC_PROG_AWK
 845 # We need awk to create options.c and options.h.
 846 # Bail out if it's missing.
 847 case ${AWK} in
 848   "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
 849 esac
 850
 851 gcc_AC_PROG_LN_S
 852 ACX_PROG_LN($LN_S)
 853 AC_PROG_RANLIB
 854 case "${host}" in
 855 *-*-darwin*)
 856   # By default, the Darwin ranlib will not treat common symbols as
 857   # definitions when  building the archive table of contents.  Other
 858   # ranlibs do that; pass an option to the Darwin ranlib that makes
 859   # it behave similarly.
 860   ranlib_flags="-c"
 861   ;;
 862 *)
 863   ranlib_flags=""
 864 esac
 865 AC_SUBST(ranlib_flags)
 866
 867 gcc_AC_PROG_INSTALL
 868
 869 # See if cmp has --ignore-initial.
 870 gcc_AC_PROG_CMP_IGNORE_INITIAL
 871
 872 # See if we have the mktemp command.
 873 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 874
 875 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
 876
 877 # See if makeinfo has been installed and is modern enough
 878 # that we can use it.
 879 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 880   [GNU texinfo.* \([0-9][0-9.]*\)],
 881   [4.[4-9]*])
 882 if test $gcc_cv_prog_makeinfo_modern = no; then
 883   MAKEINFO="$MISSING makeinfo"
 884   AC_MSG_WARN([
 885 *** Makeinfo is missing or too old.
 886 *** Info documentation will not be built.])
 887   BUILD_INFO=
 888 else
 889   BUILD_INFO=info
 890 fi
 891 AC_SUBST(BUILD_INFO)
 892
 893 # Is pod2man recent enough to regenerate manpages?
 894 AC_MSG_CHECKING([for recent Pod::Man])
 895 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
 896   AC_MSG_RESULT(yes)
 897   GENERATED_MANPAGES=generated-manpages
 898 else
 899   AC_MSG_RESULT(no)
 900   GENERATED_MANPAGES=
 901 fi
 902 AC_SUBST(GENERATED_MANPAGES)
 903
 904 # How about lex?
 905 dnl Don't use AC_PROG_LEX; we insist on flex.
 906 dnl LEXLIB is not useful in gcc.
 907 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
 908
 909 # Bison?
 910 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
 911
 912 # Binutils are not build modules, unlike bison/flex/makeinfo.  So we
 913 # check for build == host before using them.
 914
 915 # NM
 916 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
 917   && test -d ../binutils ; then
 918   NM='$(objdir)/../binutils/nm-new'
 919 else
 920   AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
 921 fi
 922
 923 # AR
 924 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
 925   && test -d ../binutils ; then
 926   AR='$(objdir)/../binutils/ar'
 927 else
 928   AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
 929 fi
 930
 931
 932 # --------------------
 933 # Checks for C headers
 934 # --------------------
 935
 936 AC_MSG_CHECKING(for GNU C library)
 937 AC_CACHE_VAL(gcc_cv_glibc,
 938 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
 939   [[#include <features.h>]], [[
 940 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
 941 #error Not a GNU C library system
 942 #endif]])],
 943   [gcc_cv_glibc=yes],
 944   [gcc_cv_glibc=no])])
 945 AC_MSG_RESULT($gcc_cv_glibc)
 946 if test $gcc_cv_glibc = yes; then
 947   AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
 948 fi
 949
 950 # Need to reject headers which give warnings, so that the -Werror bootstrap
 951 # works later. *sigh*  This needs to come before all header checks.
 952 AC_PROG_CPP_WERROR
 953
 954 AC_HEADER_STDC
 955 AC_HEADER_TIME
 956 ACX_HEADER_STRING
 957 AC_HEADER_SYS_WAIT
 958 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
 959                  fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
 960                  sys/resource.h sys/param.h sys/times.h sys/stat.h \
 961                  direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
 962
 963 # Check for thread headers.
 964 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
 965 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
 966
 967 # These tests can't be done till we know if we have limits.h.
 968 gcc_AC_C_CHAR_BIT
 969 AC_C_BIGENDIAN
 970
 971 # --------
 972 # UNSORTED
 973 # --------
 974
 975 # Stage specific cflags for build.
 976 stage1_cflags=
 977 case $build in
 978 vax-*-*)
 979   if test x$GCC = xyes
 980   then
 981     stage1_cflags="-Wa,-J"
 982   else
 983     stage1_cflags="-J"
 984   fi
 985   ;;
 986 powerpc-*-darwin*)
 987   # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
 988   # sources; use -no-cpp-precomp to get to GNU cpp.
 989   # Apple's GCC has bugs in designated initializer handling, so disable
 990   # that too.
 991   stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
 992   ;;
 993 esac
 994 AC_SUBST(stage1_cflags)
 995
 996 # These libraries may be used by collect2.
 997 # We may need a special search path to get them linked.
 998 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
 999 [save_LIBS="$LIBS"
1000 for libs in '' -lld -lmld \
1001                 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1002                 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1003 do
1004         LIBS="$libs"
1005         AC_TRY_LINK_FUNC(ldopen,
1006                 [gcc_cv_collect2_libs="$libs"; break])
1007 done
1008 LIBS="$save_LIBS"
1009 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1010 case $gcc_cv_collect2_libs in
1011         "none required")        ;;
1012         *)      COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1013 esac
1014 AC_SUBST(COLLECT2_LIBS)
1015
1016 # When building Ada code on Alpha, we need exc_resume which is usually in
1017 # -lexc.  So test for it.
1018 save_LIBS="$LIBS"
1019 LIBS=
1020 AC_SEARCH_LIBS(exc_resume, exc)
1021 GNAT_LIBEXC="$LIBS"
1022 LIBS="$save_LIBS"
1023 AC_SUBST(GNAT_LIBEXC)
1024
1025 # Some systems put ldexp and frexp in libm instead of libc; assume
1026 # they're both in the same place.  jcf-dump needs them.
1027 save_LIBS="$LIBS"
1028 LIBS=
1029 AC_SEARCH_LIBS(ldexp, m)
1030 LDEXP_LIB="$LIBS"
1031 LIBS="$save_LIBS"
1032 AC_SUBST(LDEXP_LIB)
1033
1034 # Use <inttypes.h> only if it exists,
1035 # doesn't clash with <sys/types.h>, and declares intmax_t.
1036 AC_MSG_CHECKING(for inttypes.h)
1037 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1038 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1039 [[#include <sys/types.h>
1040 #include <inttypes.h>]],
1041   [[intmax_t i = -1;]])],
1042   [gcc_cv_header_inttypes_h=yes],
1043   [gcc_cv_header_inttypes_h=no])])
1044 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1045 if test $gcc_cv_header_inttypes_h = yes; then
1046   AC_DEFINE(HAVE_INTTYPES_H, 1,
1047         [Define if you have a working <inttypes.h> header file.])
1048 fi
1049
1050 dnl Disabled until we have a complete test for buggy enum bitfields.
1051 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1052
1053 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1054   ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1055   fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1056   fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1057   putchar_unlocked putc_unlocked)
1058 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1059         sysconf strsignal getrusage nl_langinfo scandir alphasort \
1060         gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1061         gcc_UNLOCKED_FUNCS)
1062
1063 if test x$ac_cv_func_mbstowcs = xyes; then
1064   AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1065 [    AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1066 int main()
1067 {
1068   mbstowcs(0, "", 0);
1069   return 0;
1070 }]])],
1071     [gcc_cv_func_mbstowcs_works=yes],
1072     [gcc_cv_func_mbstowcs_works=no],
1073     [gcc_cv_func_mbstowcs_works=yes])])
1074   if test x$gcc_cv_func_mbstowcs_works = xyes; then
1075     AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1076   [Define this macro if mbstowcs does not crash when its
1077    first argument is NULL.])
1078   fi
1079 fi
1080
1081 AC_CHECK_TYPE(ssize_t, int)
1082
1083 # Try to determine the array type of the second argument of getgroups
1084 # for the target system (int or gid_t).
1085 AC_TYPE_GETGROUPS
1086 if test "${target}" = "${build}"; then
1087   TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1088 else
1089   case "${target}" in
1090         # This condition may need some tweaking.  It should include all
1091         # targets where the array type of the second argument of getgroups
1092         # is int and the type of gid_t is not equivalent to int.
1093         *-*-sunos* | *-*-ultrix*)
1094                 TARGET_GETGROUPS_T=int
1095                 ;;
1096         *)
1097                 TARGET_GETGROUPS_T=gid_t
1098                 ;;
1099   esac
1100 fi
1101 AC_SUBST(TARGET_GETGROUPS_T)
1102
1103 gcc_AC_FUNC_MMAP_BLACKLIST
1104
1105 case "${host}" in
1106 *-*-*vms*)
1107   # Under VMS, vfork works very differently than on Unix. The standard test
1108   # won't work, and it isn't easily adaptable. It makes more sense to
1109   # just force it.
1110   ac_cv_func_vfork_works=yes
1111   ;;
1112 esac
1113 AC_FUNC_FORK
1114
1115 AM_ICONV
1116 # Until we have in-tree GNU iconv:
1117 LIBICONV_DEP=
1118 AC_SUBST(LIBICONV_DEP)
1119
1120 AM_LC_MESSAGES
1121
1122 AM_LANGINFO_CODESET
1123
1124 # We will need to find libiberty.h and ansidecl.h
1125 saved_CFLAGS="$CFLAGS"
1126 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1127 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1128         strsignal strstr strverscmp \
1129         errno snprintf vsnprintf vasprintf malloc realloc calloc \
1130         free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1131 #include "ansidecl.h"
1132 #include "system.h"])
1133
1134 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1135 #include "ansidecl.h"
1136 #include "system.h"
1137 #ifdef HAVE_SYS_RESOURCE_H
1138 #include <sys/resource.h>
1139 #endif
1140 ])
1141
1142 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1143 #include "ansidecl.h"
1144 #include "system.h"
1145 #ifdef HAVE_SYS_RESOURCE_H
1146 #include <sys/resource.h>
1147 #endif
1148 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1149 [Define to \`long' if <sys/resource.h> doesn't define.])])
1150
1151 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1152 # FREAD and FWRITE macros.  Fortunately, for GCC's single usage of ldgetname
1153 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1154 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1155 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1156 #include "ansidecl.h"
1157 #include "system.h"
1158 #ifdef HAVE_LDFCN_H
1159 #undef FREAD
1160 #undef FWRITE
1161 #include <ldfcn.h>
1162 #endif
1163 ])
1164
1165 gcc_AC_CHECK_DECLS(times, , ,[
1166 #include "ansidecl.h"
1167 #include "system.h"
1168 #ifdef HAVE_SYS_TIMES_H
1169 #include <sys/times.h>
1170 #endif
1171 ])
1172
1173 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1174 #include "ansidecl.h"
1175 #include "system.h"
1176 #include <signal.h>
1177 ])
1178
1179 # More time-related stuff.
1180 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1181 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1182 #include "ansidecl.h"
1183 #include "system.h"
1184 #ifdef HAVE_SYS_TIMES_H
1185 #include <sys/times.h>
1186 #endif
1187 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1188 if test $ac_cv_struct_tms = yes; then
1189   AC_DEFINE(HAVE_STRUCT_TMS, 1,
1190   [Define if <sys/times.h> defines struct tms.])
1191 fi
1192
1193 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1194 # revisit after autoconf 2.50.
1195 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1196 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1197 #include "ansidecl.h"
1198 #include "system.h"
1199 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1200 if test $gcc_cv_type_clock_t = yes; then
1201   AC_DEFINE(HAVE_CLOCK_T, 1,
1202   [Define if <time.h> defines clock_t.])
1203 fi
1204
1205 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1206 CFLAGS="$saved_CFLAGS"
1207
1208 gcc_AC_INITFINI_ARRAY
1209
1210 # mkdir takes a single argument on some systems.
1211 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1212
1213 # File extensions
1214 manext='.1'
1215 objext='.o'
1216 AC_SUBST(manext)
1217 AC_SUBST(objext)
1218
1219 # With Setjmp/Longjmp based exception handling.
1220 AC_ARG_ENABLE(sjlj-exceptions,
1221 [  --enable-sjlj-exceptions
1222                           arrange to use setjmp/longjmp exception handling],
1223 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1224 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1225   [Define 0/1 to force the choice for exception handling model.])])
1226
1227 # For platforms with the unwind ABI which includes an unwind library,
1228 # libunwind, we can choose to use the system libunwind.
1229 AC_ARG_WITH(system-libunwind,
1230 [  --with-system-libunwind use installed libunwind])
1231
1232 # config.gcc also contains tests of with_system_libunwind.
1233 if test x$with_system_libunwind = xyes; then
1234         AC_DEFINE(HAVE_GETIPINFO, 1,
1235 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1236 fi
1237
1238 # --------------------------------------------------------
1239 # Build, host, and target specific configuration fragments
1240 # --------------------------------------------------------
1241
1242 # Collect build-machine-specific information.
1243 . ${srcdir}/config.build
1244
1245 # Collect host-machine-specific information.
1246 . ${srcdir}/config.host
1247
1248 target_gtfiles=
1249
1250 # Collect target-machine-specific information.
1251 . ${srcdir}/config.gcc
1252
1253 extra_objs="${host_extra_objs} ${extra_objs}"
1254 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1255
1256 # Default the target-machine variables that were not explicitly set.
1257 if test x"$tm_file" = x
1258 then tm_file=$cpu_type/$cpu_type.h; fi
1259
1260 if test x"$extra_headers" = x
1261 then extra_headers=; fi
1262
1263 if test x$md_file = x
1264 then md_file=$cpu_type/$cpu_type.md; fi
1265
1266 if test x$out_file = x
1267 then out_file=$cpu_type/$cpu_type.c; fi
1268
1269 if test x"$tmake_file" = x
1270 then tmake_file=$cpu_type/t-$cpu_type
1271 fi
1272
1273 if test x"$dwarf2" = xyes
1274 then tm_file="$tm_file tm-dwarf2.h"
1275 fi
1276
1277 # Say what files are being used for the output code and MD file.
1278 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1279 echo "Using \`$srcdir/config/$md_file' as machine description file."
1280
1281 # If any of the xm_file variables contain nonexistent files, warn
1282 # about them and drop them.
1283
1284 bx=
1285 for x in $build_xm_file; do
1286   if    test -f $srcdir/config/$x
1287   then      bx="$bx $x"
1288   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1289   fi
1290 done
1291 build_xm_file="$bx"
1292
1293 hx=
1294 for x in $host_xm_file; do
1295   if    test -f $srcdir/config/$x
1296   then      hx="$hx $x"
1297   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1298   fi
1299 done
1300 host_xm_file="$hx"
1301
1302 tx=
1303 for x in $xm_file; do
1304   if    test -f $srcdir/config/$x
1305   then      tx="$tx $x"
1306   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1307   fi
1308 done
1309 xm_file="$tx"
1310
1311 count=a
1312 for f in $tm_file; do
1313         count=${count}x
1314 done
1315 if test $count = ax; then
1316         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1317 else
1318         echo "Using the following target machine macro files:"
1319         for f in $tm_file; do
1320                 echo "  $srcdir/config/$f"
1321         done
1322 fi
1323
1324 if test x$need_64bit_hwint = xyes; then
1325         AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1326 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1327 fi
1328
1329 if test x$use_long_long_for_widest_fast_int = xyes; then
1330         AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1331 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1332 efficiently supported by the host hardware.])
1333 fi
1334
1335 count=a
1336 for f in $host_xm_file; do
1337         count=${count}x
1338 done
1339 if test $count = a; then
1340         :
1341 elif test $count = ax; then
1342         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1343 else
1344         echo "Using the following host machine macro files:"
1345         for f in $host_xm_file; do
1346                 echo "  $srcdir/config/$f"
1347         done
1348 fi
1349 echo "Using ${out_host_hook_obj} for host machine hooks."
1350
1351 if test "$host_xm_file" != "$build_xm_file"; then
1352         count=a
1353         for f in $build_xm_file; do
1354                 count=${count}x
1355         done
1356         if test $count = a; then
1357                 :
1358         elif test $count = ax; then
1359                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1360         else
1361                 echo "Using the following build machine macro files:"
1362                 for f in $build_xm_file; do
1363                         echo "  $srcdir/config/$f"
1364                 done
1365         fi
1366 fi
1367
1368 case ${host} in
1369   powerpc-*-darwin*)
1370     AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1371       gcc_cv_mcontext_underscores,
1372       AC_COMPILE_IFELSE([
1373 #include <sys/signal.h>
1374 #include <ucontext.h>
1375 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1376 ],
1377         gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1378       if test $gcc_cv_mcontext_underscores = yes; then
1379         AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1380           [mcontext_t fields start with __])
1381       fi
1382     ;;
1383 esac
1384
1385 # ---------
1386 # Threading
1387 # ---------
1388
1389 # Check if a valid thread package
1390 case ${enable_threads} in
1391   "" | no)
1392     # No threads
1393     target_thread_file='single'
1394     ;;
1395   yes)
1396     # default
1397     target_thread_file='single'
1398     ;;
1399   aix | dce | gnat | irix | posix | posix95 | rtems | \
1400   single | solaris | vxworks | win32 )
1401     target_thread_file=${enable_threads}
1402     ;;
1403   *)
1404     echo "${enable_threads} is an unknown thread package" 1>&2
1405     exit 1
1406     ;;
1407 esac
1408
1409 if test x${thread_file} = x; then
1410   # No thread file set by target-specific clauses in config.gcc,
1411   # so use file chosen by default logic above
1412   thread_file=${target_thread_file}
1413 fi
1414
1415 # Make gthr-default.h if we have a thread file.
1416 gthread_flags=
1417 if test $thread_file != single; then
1418   rm -f gthr-default.h
1419   echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1420   gthread_flags=-DHAVE_GTHR_DEFAULT
1421 fi
1422 AC_SUBST(gthread_flags)
1423
1424 # --------
1425 # UNSORTED
1426 # --------
1427
1428 use_cxa_atexit=no
1429 if test x$enable___cxa_atexit = xyes || \
1430    test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1431   if test x$host = x$target; then
1432     AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1433         [echo "__cxa_atexit can't be enabled on this target"])
1434   else
1435     # We can't check for __cxa_atexit when building a cross, so assume
1436     # it is available
1437     use_cxa_atexit=yes
1438   fi
1439   if test x$use_cxa_atexit = xyes; then
1440     AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1441       [Define if you want to use __cxa_atexit, rather than atexit, to
1442       register C++ destructors for local statics and global objects.
1443       This is essential for fully standards-compliant handling of
1444       destructors, but requires __cxa_atexit in libc.])
1445   fi
1446 fi
1447
1448 use_getipinfo=yes
1449 if test x$with_system_libunwind = xyes; then
1450    if test x$host = x$target; then
1451      AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1452    fi
1453 fi
1454 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1455 if test x$use_getipinfo = xyes; then
1456    AC_DEFINE(HAVE_GETIPINFO, 1,
1457         [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1458 else
1459    echo "The system unwind library does not support _Unwind_GetIPInfo."
1460 fi
1461
1462 # Look for a file containing extra machine modes.
1463 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1464   extra_modes_file='$(srcdir)'/config/${extra_modes}
1465   AC_SUBST(extra_modes_file)
1466   AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1467   [Define to the name of a file containing a list of extra machine modes
1468    for this architecture.])
1469 fi
1470
1471 # Convert extra_options into a form suitable for Makefile use.
1472 extra_opt_files=
1473 for f in $extra_options; do
1474   extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1475 done
1476 AC_SUBST(extra_opt_files)
1477
1478 # auto-host.h is the file containing items generated by autoconf and is
1479 # the first file included by config.h.
1480 # If host=build, it is correct to have bconfig include auto-host.h
1481 # as well.  If host!=build, we are in error and need to do more
1482 # work to find out the build config parameters.
1483 if test x$host = x$build
1484 then
1485         build_auto=auto-host.h
1486 else
1487         # We create a subdir, then run autoconf in the subdir.
1488         # To prevent recursion we set host and build for the new
1489         # invocation of configure to the build for this invocation
1490         # of configure.
1491         tempdir=build.$$
1492         rm -rf $tempdir
1493         mkdir $tempdir
1494         cd $tempdir
1495         case ${srcdir} in
1496         /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1497         *) realsrcdir=../${srcdir};;
1498         esac
1499         saved_CFLAGS="${CFLAGS}"
1500         CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1501         ${realsrcdir}/configure \
1502                 --enable-languages=${enable_languages-all} \
1503                 --target=$target_alias --host=$build_alias --build=$build_alias
1504         CFLAGS="${saved_CFLAGS}"
1505
1506         # We just finished tests for the build machine, so rename
1507         # the file auto-build.h in the gcc directory.
1508         mv auto-host.h ../auto-build.h
1509         cd ..
1510         rm -rf $tempdir
1511         build_auto=auto-build.h
1512 fi
1513 AC_SUBST(build_subdir)
1514
1515 tm_file="${tm_file} defaults.h"
1516 tm_p_file="${tm_p_file} tm-preds.h"
1517 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1518 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1519 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1520 # put this back in temporarily.
1521 xm_file="auto-host.h ansidecl.h ${xm_file}"
1522
1523 # --------
1524 # UNSORTED
1525 # --------
1526
1527 changequote(,)dnl
1528 # Compile in configure arguments.
1529 if test -f configargs.h ; then
1530         # Being re-configured.
1531         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1532         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1533 else
1534         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1535 fi
1536
1537 # Double all backslashes and backslash all quotes to turn
1538 # gcc_config_arguments into a C string.
1539 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1540 $gcc_config_arguments
1541 EOF
1542 gcc_config_arguments_str=`cat conftest.out`
1543 rm -f conftest.out
1544
1545 cat > configargs.h <<EOF
1546 /* Generated automatically. */
1547 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1548 static const char thread_model[] = "$thread_file";
1549
1550 static const struct {
1551   const char *name, *value;
1552 } configure_default_options[] = $configure_default_options;
1553 EOF
1554 changequote([,])dnl
1555
1556 # Internationalization
1557 ZW_GNU_GETTEXT_SISTER_DIR
1558
1559 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1560 # -liconv on the link line twice.
1561 case "$LIBINTL" in *$LIBICONV*)
1562         LIBICONV= ;;
1563 esac
1564
1565 AC_ARG_ENABLE(secureplt,
1566 [  --enable-secureplt      enable -msecure-plt by default for PowerPC],
1567 [], [])
1568
1569 # Windows32 Registry support for specifying GCC installation paths.
1570 AC_ARG_ENABLE(win32-registry,
1571 [  --disable-win32-registry
1572                           disable lookup of installation paths in the
1573                           Registry on Windows hosts
1574   --enable-win32-registry enable registry lookup (default)
1575   --enable-win32-registry=KEY
1576                           use KEY instead of GCC version as the last portion
1577                           of the registry key],,)
1578
1579 case $host_os in
1580   win32 | pe | cygwin* | mingw32* | uwin*)
1581     if test "x$enable_win32_registry" != xno; then
1582       AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1583     fi
1584
1585     if test "x$enable_win32_registry" != xno; then
1586       AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1587   [Define to 1 if installation paths should be looked up in the Windows
1588    Registry. Ignored on non-Windows hosts.])
1589
1590       if test "x$enable_win32_registry" != xyes \
1591          && test "x$enable_win32_registry" != x; then
1592         AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1593   [Define to be the last component of the Windows registry key under which
1594    to look for installation paths.  The full key used will be
1595    HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1596    The default is the GCC version number.])
1597       fi
1598     fi
1599   ;;
1600 esac
1601
1602 # Get an absolute path to the GCC top-level source directory
1603 holddir=`${PWDCMD-pwd}`
1604 cd $srcdir
1605 topdir=`${PWDCMD-pwd}`
1606 cd $holddir
1607
1608 # Conditionalize the makefile for this host machine.
1609 xmake_file=
1610 for f in ${host_xmake_file}
1611 do
1612         if test -f ${srcdir}/config/$f
1613         then
1614                 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1615         fi
1616 done
1617
1618 # Conditionalize the makefile for this target machine.
1619 tmake_file_=
1620 for f in ${tmake_file}
1621 do
1622         if test -f ${srcdir}/config/$f
1623         then
1624                 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1625         fi
1626 done
1627 tmake_file="${tmake_file_}"
1628
1629 # If the host doesn't support symlinks, modify CC in
1630 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1631 # Otherwise, we can use "CC=$(CC)".
1632 rm -f symtest.tem
1633 case "$LN_S" in
1634         *-s*)
1635                 cc_set_by_configure="\$(CC)"
1636                 quoted_cc_set_by_configure="\$(CC)"
1637                 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1638                 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1639                 ;;
1640         *)
1641                 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1642                 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1643                 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1644                 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1645                 ;;
1646 esac
1647
1648 # This is a terrible hack which will go away some day.
1649 host_cc_for_libada=${CC}
1650 AC_SUBST(host_cc_for_libada)
1651
1652 out_object_file=`basename $out_file .c`.o
1653
1654 tm_file_list="options.h"
1655 tm_include_list="options.h"
1656 for f in $tm_file; do
1657   case $f in
1658     defaults.h )
1659        tm_file_list="${tm_file_list} \$(srcdir)/$f"
1660        tm_include_list="${tm_include_list} $f"
1661        ;;
1662     * )
1663        tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1664        tm_include_list="${tm_include_list} config/$f"
1665        ;;
1666   esac
1667 done
1668
1669 tm_p_file_list=
1670 tm_p_include_list=
1671 for f in $tm_p_file; do
1672   case $f in
1673     tm-preds.h )
1674        tm_p_file_list="${tm_p_file_list} $f"
1675        tm_p_include_list="${tm_p_include_list} $f"
1676        ;;
1677     * )
1678        tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1679        tm_p_include_list="${tm_p_include_list} config/$f"
1680   esac
1681 done
1682
1683 xm_file_list=
1684 xm_include_list=
1685 for f in $xm_file; do
1686   case $f in
1687     ansidecl.h )
1688        xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1689        xm_include_list="${xm_include_list} $f"
1690        ;;
1691     auto-host.h )
1692        xm_file_list="${xm_file_list} $f"
1693        xm_include_list="${xm_include_list} $f"
1694        ;;
1695     * )
1696        xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1697        xm_include_list="${xm_include_list} config/$f"
1698        ;;
1699   esac
1700 done
1701
1702 host_xm_file_list=
1703 host_xm_include_list=
1704 for f in $host_xm_file; do
1705   case $f in
1706     ansidecl.h )
1707        host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1708        host_xm_include_list="${host_xm_include_list} $f"
1709        ;;
1710     auto-host.h )
1711        host_xm_file_list="${host_xm_file_list} $f"
1712        host_xm_include_list="${host_xm_include_list} $f"
1713        ;;
1714     * )
1715        host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1716        host_xm_include_list="${host_xm_include_list} config/$f"
1717        ;;
1718   esac
1719 done
1720
1721 build_xm_file_list=
1722 for f in $build_xm_file; do
1723   case $f in
1724     ansidecl.h )
1725        build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1726        build_xm_include_list="${build_xm_include_list} $f"
1727        ;;
1728     auto-build.h | auto-host.h )
1729        build_xm_file_list="${build_xm_file_list} $f"
1730        build_xm_include_list="${build_xm_include_list} $f"
1731        ;;
1732     * )
1733        build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1734        build_xm_include_list="${build_xm_include_list} config/$f"
1735        ;;
1736   esac
1737 done
1738
1739 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1740 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1741 CROSS=                                          AC_SUBST(CROSS)
1742 ALL=all.internal                                AC_SUBST(ALL)
1743 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1744
1745 if test "x$with_build_sysroot" != x; then
1746   build_system_header_dir=$with_build_sysroot'$(NATIVE_SYSTEM_HEADER_DIR)'
1747 else
1748   # This value is used, even on a native system, because
1749   # CROSS_SYSTEM_HEADER_DIR is just
1750   # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1751   build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1752 fi
1753
1754 if test x$host != x$target
1755 then
1756         CROSS="-DCROSS_COMPILE"
1757         ALL=all.cross
1758         SYSTEM_HEADER_DIR=$build_system_header_dir
1759         case "$host","$target" in
1760         # Darwin crosses can use the host system's libraries and headers,
1761         # because of the fat library support.  Of course, it must be the
1762         # same version of Darwin on both sides.  Allow the user to
1763         # just say --target=foo-darwin without a version number to mean
1764         # "the version on this system".
1765             *-*-darwin*,*-*-darwin*)
1766                 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1767                 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1768                 if test $hostos = $targetos -o $targetos = darwin ; then
1769                     CROSS=
1770                     SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1771                     with_headers=yes
1772                 fi
1773                 ;;
1774
1775             i?86-*-*,x86_64-*-* \
1776             | powerpc*-*-*,powerpc64*-*-*)
1777                 CROSS="$CROSS -DNATIVE_CROSS" ;;
1778         esac
1779 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1780         SYSTEM_HEADER_DIR=$build_system_header_dir
1781 fi
1782
1783 # If this is a cross-compiler that does not
1784 # have its own set of headers then define
1785 # inhibit_libc
1786
1787 # If this is using newlib, without having the headers available now,
1788 # then define inhibit_libc in LIBGCC2_CFLAGS.
1789 # This prevents libgcc2 from containing any code which requires libc
1790 # support.
1791 inhibit_libc=false
1792 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1793        test x$with_newlib = xyes ; } &&
1794      { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1795        inhibit_libc=true
1796 fi
1797 AC_SUBST(inhibit_libc)
1798
1799 # When building gcc with a cross-compiler, we need to adjust things so
1800 # that the generator programs are still built with the native compiler.
1801 # Also, we cannot run fixincludes or fix-header.
1802
1803 # These are the normal (build=host) settings:
1804 CC_FOR_BUILD='$(CC)'            AC_SUBST(CC_FOR_BUILD)
1805 BUILD_CFLAGS='$(ALL_CFLAGS)'    AC_SUBST(BUILD_CFLAGS)
1806 STMP_FIXINC=stmp-fixinc         AC_SUBST(STMP_FIXINC)
1807
1808 # Possibly disable fixproto, on a per-target basis.
1809 case ${use_fixproto} in
1810   no)
1811     STMP_FIXPROTO=
1812     ;;
1813   yes)
1814     STMP_FIXPROTO=stmp-fixproto
1815     ;;
1816 esac
1817 AC_SUBST(STMP_FIXPROTO)
1818
1819 # And these apply if build != host, or we are generating coverage data
1820 if test x$build != x$host || test "x$coverage_flags" != x
1821 then
1822     BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1823
1824     if test "x$TARGET_SYSTEM_ROOT" = x; then
1825         if test "x$STMP_FIXPROTO" != x; then
1826           STMP_FIXPROTO=stmp-install-fixproto
1827         fi
1828     fi
1829 fi
1830
1831 # Expand extra_headers to include complete path.
1832 # This substitutes for lots of t-* files.
1833 extra_headers_list=
1834 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1835 for file in ${extra_headers} ; do
1836   extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1837 done
1838
1839 # Define collect2 in Makefile.
1840 case $host_can_use_collect2 in
1841   no) collect2= ;;
1842   *) collect2='collect2$(exeext)' ;;
1843 esac
1844 AC_SUBST([collect2])
1845
1846 # Add a definition of USE_COLLECT2 if system wants one.
1847 case $use_collect2 in
1848   no) use_collect2= ;;
1849   "") ;;
1850   *)
1851     host_xm_defines="${host_xm_defines} USE_COLLECT2"
1852     xm_defines="${xm_defines} USE_COLLECT2"
1853     case $host_can_use_collect2 in
1854       no)
1855         AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1856         ;;
1857     esac
1858     ;;
1859 esac
1860
1861 # ---------------------------
1862 # Assembler & linker features
1863 # ---------------------------
1864
1865 # Identify the assembler which will work hand-in-glove with the newly
1866 # built GCC, so that we can examine its features.  This is the assembler
1867 # which will be driven by the driver program.
1868 #
1869 # If build != host, and we aren't building gas in-tree, we identify a
1870 # build->target assembler and hope that it will have the same features
1871 # as the host->target assembler we'll be using.
1872 gcc_cv_gas_major_version=
1873 gcc_cv_gas_minor_version=
1874 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1875
1876 m4_pattern_allow([AS_FOR_TARGET])dnl
1877 AS_VAR_SET_IF(gcc_cv_as,, [
1878 if test -x "$DEFAULT_ASSEMBLER"; then
1879         gcc_cv_as="$DEFAULT_ASSEMBLER"
1880 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1881      && test -f ../gas/Makefile \
1882      && test x$build = x$host; then
1883         gcc_cv_as=../gas/as-new$build_exeext
1884 elif test -x as$build_exeext; then
1885         # Build using assembler in the current directory.
1886         gcc_cv_as=./as$build_exeext
1887 elif test -x $AS_FOR_TARGET; then
1888         gcc_cv_as="$AS_FOR_TARGET"
1889 else
1890         AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1891 fi])
1892
1893 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1894 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1895
1896 AC_MSG_CHECKING(what assembler to use)
1897 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1898   # Single tree build which includes gas.  We want to prefer it
1899   # over whatever linker top-level may have detected, since
1900   # we'll use what we're building after installation anyway.
1901   AC_MSG_RESULT(newly built gas)
1902   in_tree_gas=yes
1903   _gcc_COMPUTE_GAS_VERSION
1904   in_tree_gas_is_elf=no
1905   if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1906      || (grep 'obj_format = multi' ../gas/Makefile \
1907          && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1908   then
1909     in_tree_gas_is_elf=yes
1910   fi
1911 else
1912   AC_MSG_RESULT($gcc_cv_as)
1913   in_tree_gas=no
1914 fi
1915
1916 # Identify the linker which will work hand-in-glove with the newly
1917 # built GCC, so that we can examine its features.  This is the linker
1918 # which will be driven by the driver program.
1919 #
1920 # If build != host, and we aren't building gas in-tree, we identify a
1921 # build->target linker and hope that it will have the same features
1922 # as the host->target linker we'll be using.
1923 gcc_cv_gld_major_version=
1924 gcc_cv_gld_minor_version=
1925 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1926 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1927
1928 AS_VAR_SET_IF(gcc_cv_ld,, [
1929 if test -x "$DEFAULT_LINKER"; then
1930         gcc_cv_ld="$DEFAULT_LINKER"
1931 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1932      && test -f ../ld/Makefile \
1933      && test x$build = x$host; then
1934         gcc_cv_ld=../ld/ld-new$build_exeext
1935 elif test -x collect-ld$build_exeext; then
1936         # Build using linker in the current directory.
1937         gcc_cv_ld=./collect-ld$build_exeext
1938 elif test -x $LD_FOR_TARGET; then
1939         gcc_cv_ld="$LD_FOR_TARGET"
1940 else
1941         AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1942 fi])
1943
1944 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1945 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1946
1947 AC_MSG_CHECKING(what linker to use)
1948 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1949         # Single tree build which includes ld.  We want to prefer it
1950         # over whatever linker top-level may have detected, since
1951         # we'll use what we're building after installation anyway.
1952         AC_MSG_RESULT(newly built ld)
1953         in_tree_ld=yes
1954         in_tree_ld_is_elf=no
1955         if (grep 'EMUL = .*elf' ../ld/Makefile \
1956             || grep 'EMUL = .*linux' ../ld/Makefile \
1957             || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1958           in_tree_ld_is_elf=yes
1959         fi
1960         for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in
1961         do
1962 changequote(,)dnl
1963                 gcc_cv_gld_version=`sed -n -e 's/^[     ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1964                 if test x$gcc_cv_gld_version != x; then
1965                         break
1966                 fi
1967         done
1968         gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1969         gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1970 changequote([,])dnl
1971 else
1972         AC_MSG_RESULT($gcc_cv_ld)
1973         in_tree_ld=no
1974 fi
1975
1976 # Figure out what nm we will be using.
1977 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1978 AS_VAR_SET_IF(gcc_cv_nm,, [
1979 if test -f $gcc_cv_binutils_srcdir/configure.in \
1980      && test -f ../binutils/Makefile \
1981      && test x$build = x$host; then
1982         gcc_cv_nm=../binutils/nm-new$build_exeext
1983 elif test -x nm$build_exeext; then
1984         gcc_cv_nm=./nm$build_exeext
1985 elif test -x $NM_FOR_TARGET; then
1986         gcc_cv_nm="$NM_FOR_TARGET"
1987 else
1988         AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1989 fi])
1990
1991 AC_MSG_CHECKING(what nm to use)
1992 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1993         # Single tree build which includes binutils.
1994         AC_MSG_RESULT(newly built nm)
1995         in_tree_nm=yes
1996 else
1997         AC_MSG_RESULT($gcc_cv_nm)
1998         in_tree_nm=no
1999 fi
2000
2001 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2002 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2003
2004 # Figure out what objdump we will be using.
2005 AS_VAR_SET_IF(gcc_cv_objdump,, [
2006 if test -f $gcc_cv_binutils_srcdir/configure.in \
2007      && test -f ../binutils/Makefile \
2008      && test x$build = x$host; then
2009         # Single tree build which includes binutils.
2010         gcc_cv_objdump=../binutils/objdump$build_exeext
2011 elif test -x objdump$build_exeext; then
2012         gcc_cv_objdump=./objdump$build_exeext
2013 elif test -x $OBJDUMP_FOR_TARGET; then
2014         gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2015 else
2016         AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2017 fi])
2018
2019 AC_MSG_CHECKING(what objdump to use)
2020 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2021         # Single tree build which includes binutils.
2022         AC_MSG_RESULT(newly built objdump)
2023 elif test x$gcc_cv_objdump = x; then
2024         AC_MSG_RESULT(not found)
2025 else
2026         AC_MSG_RESULT($gcc_cv_objdump)
2027 fi
2028
2029 # Figure out what assembler alignment features are present.
2030 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2031  [2,6,0],,
2032 [.balign 4
2033 .p2align 2],,
2034 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2035   [Define if your assembler supports .balign and .p2align.])])
2036
2037 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2038  [2,8,0],,
2039  [.p2align 4,,7],,
2040 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2041   [Define if your assembler supports specifying the maximum number
2042    of bytes to skip when using the GAS .p2align command.])])
2043
2044 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2045  [elf,2,9,0],,
2046  [conftest_label1: .word 0
2047 .subsection -1
2048 conftest_label2: .word 0
2049 .previous],
2050  [if test x$gcc_cv_nm != x; then
2051     $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2052     $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2053     if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2054     then :
2055     else gcc_cv_as_subsection_m1=yes
2056     fi
2057     rm -f conftest.nm1 conftest.nm2
2058   fi],
2059  [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2060   [Define if your assembler supports .subsection and .subsection -1 starts
2061    emitting at the beginning of your section.])])
2062
2063 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2064  [2,2,0],,
2065  [      .weak foobar],,
2066 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2067
2068 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2069  [2,17,0],,
2070  [      .weakref foobar, barfnot],,
2071 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2072
2073 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2074  [2,15,91],,
2075  [      .SPACE $TEXT$
2076         .NSUBSPA $CODE$,COMDAT],,
2077 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2078
2079 # .hidden needs to be supported in both the assembler and the linker,
2080 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2081 # This is irritatingly difficult to feature test for; we have to check the
2082 # date string after the version number.  If we've got an in-tree
2083 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2084 # to be safe.
2085 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2086 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2087  [elf,2,13,0],,
2088 [       .hidden foobar
2089 foobar:])
2090
2091 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2092 [if test $in_tree_ld = yes ; then
2093   gcc_cv_ld_hidden=no
2094   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2095      && test $in_tree_ld_is_elf = yes; then
2096      gcc_cv_ld_hidden=yes
2097   fi
2098 else
2099   gcc_cv_ld_hidden=yes
2100   ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2101   if echo "$ld_ver" | grep GNU > /dev/null; then
2102 changequote(,)dnl
2103     ld_vers=`echo $ld_ver | sed -n \
2104         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2105         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2106         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2107         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\)[  ].*$,\1,p' \
2108         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[     ].*$,\1,p' \
2109         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[       ].*$,\1,p' \
2110         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[   ].*$,\1,p'`
2111     ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2112     ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2113     ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2114     ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2115     if test 0"$ld_date" -lt 20020404; then
2116       if test -n "$ld_date"; then
2117         # If there was date string, but was earlier than 2002-04-04, fail
2118         gcc_cv_ld_hidden=no
2119       elif test -z "$ld_vers"; then
2120         # If there was no date string nor ld version number, something is wrong
2121         gcc_cv_ld_hidden=no
2122       else
2123         test -z "$ld_vers_patch" && ld_vers_patch=0
2124         if test "$ld_vers_major" -lt 2; then
2125           gcc_cv_ld_hidden=no
2126         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2127           gcc_cv_ld_hidden="no"
2128         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2129           gcc_cv_ld_hidden=no
2130         fi
2131       fi
2132 changequote([,])dnl
2133     fi
2134   else
2135     case "${target}" in
2136       hppa64*-*-hpux* | ia64*-*-hpux*)
2137         gcc_cv_ld_hidden=yes
2138         ;;
2139       *)
2140         gcc_cv_ld_hidden=no
2141         ;;
2142     esac
2143   fi
2144 fi])
2145 libgcc_visibility=no
2146 AC_SUBST(libgcc_visibility)
2147 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2148 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2149   libgcc_visibility=yes
2150   AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2151   [Define if your assembler and linker support .hidden.])
2152 fi
2153
2154 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2155 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2156   [elf,2,11,0],,
2157 [       .data
2158         .uleb128 L2 - L1
2159 L1:
2160         .uleb128 1280
2161         .sleb128 -1010
2162 L2:],
2163  [# GAS versions before 2.11 do not support uleb128,
2164   # despite appearing to.
2165   # ??? There exists an elf-specific test that will crash
2166   # the assembler.  Perhaps it's better to figure out whether
2167   # arbitrary sections are supported and try the test.
2168   as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2169   if echo "$as_ver" | grep GNU > /dev/null; then
2170 changequote(,)dnl
2171     as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2172     as_major=`echo $as_ver | sed 's/\..*//'`
2173     as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2174 changequote([,])dnl
2175     if test $as_major -eq 2 && test $as_minor -lt 11
2176     then :
2177     else gcc_cv_as_leb128=yes
2178     fi
2179   fi],
2180   [AC_DEFINE(HAVE_AS_LEB128, 1,
2181     [Define if your assembler supports .sleb128 and .uleb128.])])
2182
2183 # GAS versions up to and including 2.11.0 may mis-optimize
2184 # .eh_frame data.
2185 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2186   [elf,2,12,0],,
2187 [       .text
2188 .LFB1:
2189         .4byte  0
2190 .L1:
2191         .4byte  0
2192 .LFE1:
2193         .section        .eh_frame,"aw",@progbits
2194 __FRAME_BEGIN__:
2195         .4byte  .LECIE1-.LSCIE1
2196 .LSCIE1:
2197         .4byte  0x0
2198         .byte   0x1
2199         .ascii "z\0"
2200         .byte   0x1
2201         .byte   0x78
2202         .byte   0x1a
2203         .byte   0x0
2204         .byte   0x4
2205         .4byte  1
2206         .p2align 1
2207 .LECIE1:
2208 .LSFDE1:
2209         .4byte  .LEFDE1-.LASFDE1
2210 .LASFDE1:
2211         .4byte  .LASFDE1-__FRAME_BEGIN__
2212         .4byte  .LFB1
2213         .4byte  .LFE1-.LFB1
2214         .byte   0x4
2215         .4byte  .LFE1-.LFB1
2216         .byte   0x4
2217         .4byte  .L1-.LFB1
2218 .LEFDE1:],
2219 [  dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2220 cat > conftest.lit <<EOF
2221  0000 10000000 00000000 017a0001 781a0004  .........z..x...
2222  0010 01000000 12000000 18000000 00000000  ................
2223  0020 08000000 04080000 0044               .........D      @&t@
2224 EOF
2225 cat > conftest.big <<EOF
2226  0000 00000010 00000000 017a0001 781a0004  .........z..x...
2227  0010 00000001 00000012 00000018 00000000  ................
2228  0020 00000008 04000000 0844               .........D      @&t@
2229 EOF
2230   # If the assembler didn't choke, and we can objdump,
2231   # and we got the correct data, then succeed.
2232   # The text in the here-document typically retains its unix-style line
2233   # endings, while the output of objdump will use host line endings.
2234   # Therefore, use diff -b for the comparisons.
2235   if test x$gcc_cv_objdump != x \
2236   && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2237      | tail -3 > conftest.got \
2238   && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2239     || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2240   then
2241     gcc_cv_as_eh_frame=yes
2242   elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2243     gcc_cv_as_eh_frame=buggy
2244   else
2245     # Uh oh, what do we do now?
2246     gcc_cv_as_eh_frame=no
2247   fi])
2248
2249 if test $gcc_cv_as_eh_frame = buggy; then
2250   AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2251   [Define if your assembler mis-optimizes .eh_frame data.])
2252 fi
2253
2254 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2255  [elf,2,12,0], [--fatal-warnings],
2256  [.section .rodata.str, "aMS", @progbits, 1])
2257 if test $gcc_cv_as_shf_merge = no; then
2258   gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2259     [elf,2,12,0], [--fatal-warnings],
2260     [.section .rodata.str, "aMS", %progbits, 1])
2261 fi
2262 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2263   [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2264 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2265
2266 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2267  [elf,2,16,0], [--fatal-warnings],
2268  [.section .text,"axG",@progbits,.foo,comdat])
2269 if test $gcc_cv_as_comdat_group = yes; then
2270   gcc_cv_as_comdat_group_percent=no
2271 else
2272  gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2273    [elf,2,16,0], [--fatal-warnings],
2274    [.section .text,"axG",%progbits,.foo,comdat])
2275 fi
2276 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2277   comdat_group=yes
2278   if test 0"$ld_date" -lt 20050308; then
2279     if test -n "$ld_date"; then
2280       # If there was date string, but was earlier than 2005-03-08, fail
2281       comdat_group=no
2282     elif test "$ld_vers_major" -lt 2; then
2283       comdat_group=no
2284     elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2285       comdat_group=no
2286     fi
2287   fi
2288 else
2289   # assume linkers other than GNU ld don't support COMDAT group
2290   comdat_group=no
2291 fi
2292 if test $comdat_group = no; then
2293   gcc_cv_as_comdat_group=no
2294   gcc_cv_as_comdat_group_percent=no
2295 fi
2296 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2297   [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2298 [Define 0/1 if your assembler and linker support COMDAT groups.])
2299
2300 # Thread-local storage - the check is heavily parametrized.
2301 conftest_s=
2302 tls_first_major=
2303 tls_first_minor=
2304 tls_as_opt=
2305 case "$target" in
2306 changequote(,)dnl
2307   alpha*-*-*)
2308     conftest_s='
2309         .section ".tdata","awT",@progbits
2310 foo:    .long   25
2311         .text
2312         ldq     $27,__tls_get_addr($29)         !literal!1
2313         lda     $16,foo($29)                    !tlsgd!1
2314         jsr     $26,($27),__tls_get_addr        !lituse_tlsgd!1
2315         ldq     $27,__tls_get_addr($29)         !literal!2
2316         lda     $16,foo($29)                    !tlsldm!2
2317         jsr     $26,($27),__tls_get_addr        !lituse_tlsldm!2
2318         ldq     $1,foo($29)                     !gotdtprel
2319         ldah    $2,foo($29)                     !dtprelhi
2320         lda     $3,foo($2)                      !dtprello
2321         lda     $4,foo($29)                     !dtprel
2322         ldq     $1,foo($29)                     !gottprel
2323         ldah    $2,foo($29)                     !tprelhi
2324         lda     $3,foo($2)                      !tprello
2325         lda     $4,foo($29)                     !tprel'
2326         tls_first_major=2
2327         tls_first_minor=13
2328         tls_as_opt=--fatal-warnings
2329         ;;
2330   frv*-*-*)
2331     conftest_s='
2332         .section ".tdata","awT",@progbits
2333 x:      .long   25
2334         .text
2335         call    #gettlsoff(x)'
2336         tls_first_major=2
2337         tls_first_minor=14
2338         ;;
2339   hppa*-*-linux*)
2340     conftest_s='
2341 t1:     .reg    %r20
2342 t2:     .reg    %r21
2343 gp:     .reg    %r19
2344         .section ".tdata","awT",@progbits
2345 foo:    .long   25
2346         .text
2347         .align  4
2348         addil LT%foo-$tls_gdidx$,gp
2349         ldo RT%foo-$tls_gdidx$(%r1),%arg0
2350         b __tls_get_addr
2351         nop
2352         addil LT%foo-$tls_ldidx$,gp
2353         b __tls_get_addr
2354         ldo RT%foo-$tls_ldidx$(%r1),%arg0
2355         addil LR%foo-$tls_dtpoff$,%ret0
2356         ldo RR%foo-$tls_dtpoff$(%r1),%t1
2357         mfctl %cr27,%t1
2358         addil LT%foo-$tls_ieoff$,gp
2359         ldw RT%foo-$tls_ieoff$(%r1),%t2
2360         add %t1,%t2,%t3
2361         mfctl %cr27,%t1
2362         addil LR%foo-$tls_leoff$,%t1
2363         ldo RR%foo-$tls_leoff$(%r1),%t2'
2364         tls_first_major=2
2365         tls_first_minor=15
2366         tls_as_opt=--fatal-warnings
2367         ;;
2368   arm*-*-*)
2369     conftest_s='
2370         .section ".tdata","awT",%progbits
2371 foo:    .long   25
2372         .text
2373 .word foo(gottpoff)
2374 .word foo(tpoff)
2375 .word foo(tlsgd)
2376 .word foo(tlsldm)
2377 .word foo(tlsldo)'
2378         tls_first_major=2
2379         tls_first_minor=17
2380         ;;
2381   i[34567]86-*-*)
2382     conftest_s='
2383         .section ".tdata","awT",@progbits
2384 foo:    .long   25
2385         .text
2386         movl    %gs:0, %eax
2387         leal    foo@TLSGD(,%ebx,1), %eax
2388         leal    foo@TLSLDM(%ebx), %eax
2389         leal    foo@DTPOFF(%eax), %edx
2390         movl    foo@GOTTPOFF(%ebx), %eax
2391         subl    foo@GOTTPOFF(%ebx), %eax
2392         addl    foo@GOTNTPOFF(%ebx), %eax
2393         movl    foo@INDNTPOFF, %eax
2394         movl    $foo@TPOFF, %eax
2395         subl    $foo@TPOFF, %eax
2396         leal    foo@NTPOFF(%ecx), %eax'
2397         tls_first_major=2
2398         tls_first_minor=14
2399         tls_as_opt=--fatal-warnings
2400         ;;
2401   x86_64-*-*)
2402     conftest_s='
2403         .section ".tdata","awT",@progbits
2404 foo:    .long   25
2405         .text
2406         movq    %fs:0, %rax
2407         leaq    foo@TLSGD(%rip), %rdi
2408         leaq    foo@TLSLD(%rip), %rdi
2409         leaq    foo@DTPOFF(%rax), %rdx
2410         movq    foo@GOTTPOFF(%rip), %rax
2411         movq    $foo@TPOFF, %rax'
2412         tls_first_major=2
2413         tls_first_minor=14
2414         tls_as_opt=--fatal-warnings
2415         ;;
2416   ia64-*-*)
2417     conftest_s='
2418         .section ".tdata","awT",@progbits
2419 foo:    data8   25
2420         .text
2421         addl    r16 = @ltoff(@dtpmod(foo#)), gp
2422         addl    r17 = @ltoff(@dtprel(foo#)), gp
2423         addl    r18 = @ltoff(@tprel(foo#)), gp
2424         addl    r19 = @dtprel(foo#), gp
2425         adds    r21 = @dtprel(foo#), r13
2426         movl    r23 = @dtprel(foo#)
2427         addl    r20 = @tprel(foo#), gp
2428         adds    r22 = @tprel(foo#), r13
2429         movl    r24 = @tprel(foo#)'
2430         tls_first_major=2
2431         tls_first_minor=13
2432         tls_as_opt=--fatal-warnings
2433         ;;
2434   mips*-*-*)
2435     conftest_s='
2436         .section .tdata,"awT",@progbits
2437 x:
2438         .word 2
2439         .text
2440         addiu $4, $28, %tlsgd(x)
2441         addiu $4, $28, %tlsldm(x)
2442         lui $4, %dtprel_hi(x)
2443         addiu $4, $4, %dtprel_lo(x)
2444         lw $4, %gottprel(x)($28)
2445         lui $4, %tprel_hi(x)
2446         addiu $4, $4, %tprel_lo(x)'
2447         tls_first_major=2
2448         tls_first_minor=16
2449         tls_as_opt='-32 --fatal-warnings'
2450         ;;
2451   powerpc-*-*)
2452     conftest_s='
2453         .section ".tdata","awT",@progbits
2454         .align 2
2455 ld0:    .space 4
2456 ld1:    .space 4
2457 x1:     .space 4
2458 x2:     .space 4
2459 x3:     .space 4
2460         .text
2461         addi 3,31,ld0@got@tlsgd
2462         bl __tls_get_addr
2463         addi 3,31,x1@got@tlsld
2464         bl __tls_get_addr
2465         addi 9,3,x1@dtprel
2466         addis 9,3,x2@dtprel@ha
2467         addi 9,9,x2@dtprel@l
2468         lwz 9,x3@got@tprel(31)
2469         add 9,9,x@tls
2470         addi 9,2,x1@tprel
2471         addis 9,2,x2@tprel@ha
2472         addi 9,9,x2@tprel@l'
2473         tls_first_major=2
2474         tls_first_minor=14
2475         tls_as_opt="-a32 --fatal-warnings"
2476         ;;
2477   powerpc64-*-*)
2478     conftest_s='
2479         .section ".tdata","awT",@progbits
2480         .align 3
2481 ld0:    .space 8
2482 ld1:    .space 8
2483 x1:     .space 8
2484 x2:     .space 8
2485 x3:     .space 8
2486         .text
2487         addi 3,2,ld0@got@tlsgd
2488         bl .__tls_get_addr
2489         nop
2490         addi 3,2,ld1@toc
2491         bl .__tls_get_addr
2492         nop
2493         addi 3,2,x1@got@tlsld
2494         bl .__tls_get_addr
2495         nop
2496         addi 9,3,x1@dtprel
2497         bl .__tls_get_addr
2498         nop
2499         addis 9,3,x2@dtprel@ha
2500         addi 9,9,x2@dtprel@l
2501         bl .__tls_get_addr
2502         nop
2503         ld 9,x3@got@dtprel(2)
2504         add 9,9,3
2505         bl .__tls_get_addr
2506         nop'
2507         tls_first_major=2
2508         tls_first_minor=14
2509         tls_as_opt="-a64 --fatal-warnings"
2510         ;;
2511   s390-*-*)
2512     conftest_s='
2513         .section ".tdata","awT",@progbits
2514 foo:    .long   25
2515         .text
2516         .long   foo@TLSGD
2517         .long   foo@TLSLDM
2518         .long   foo@DTPOFF
2519         .long   foo@NTPOFF
2520         .long   foo@GOTNTPOFF
2521         .long   foo@INDNTPOFF
2522         l       %r1,foo@GOTNTPOFF(%r12)
2523         l       %r1,0(%r1):tls_load:foo
2524         bas     %r14,0(%r1,%r13):tls_gdcall:foo
2525         bas     %r14,0(%r1,%r13):tls_ldcall:foo'
2526         tls_first_major=2
2527         tls_first_minor=14
2528         tls_as_opt="-m31 --fatal-warnings"
2529         ;;
2530   s390x-*-*)
2531     conftest_s='
2532         .section ".tdata","awT",@progbits
2533 foo:    .long   25
2534         .text
2535         .quad   foo@TLSGD
2536         .quad   foo@TLSLDM
2537         .quad   foo@DTPOFF
2538         .quad   foo@NTPOFF
2539         .quad   foo@GOTNTPOFF
2540         lg      %r1,foo@GOTNTPOFF(%r12)
2541         larl    %r1,foo@INDNTPOFF
2542         brasl   %r14,__tls_get_offset@PLT:tls_gdcall:foo
2543         brasl   %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2544         tls_first_major=2
2545         tls_first_minor=14
2546         tls_as_opt="-m64 -Aesame --fatal-warnings"
2547         ;;
2548   sh-*-* | sh[34]-*-*)
2549     conftest_s='
2550         .section ".tdata","awT",@progbits
2551 foo:    .long   25
2552         .text
2553         .long   foo@TLSGD
2554         .long   foo@TLSLDM
2555         .long   foo@DTPOFF
2556         .long   foo@GOTTPOFF
2557         .long   foo@TPOFF'
2558         tls_first_major=2
2559         tls_first_minor=13
2560         tls_as_opt=--fatal-warnings
2561         ;;
2562   sparc*-*-*)
2563     case "$target" in
2564       sparc*-sun-solaris2.[56789]*)
2565         # TLS was introduced in the Solaris 9 4/04 release but
2566         # we do not enable it by default on Solaris 9 either.
2567         if test "x$enable_tls" = xyes ; then
2568           on_solaris=yes
2569         else
2570           enable_tls=no;
2571         fi
2572         ;;
2573       sparc*-sun-solaris2.*)
2574         on_solaris=yes
2575         ;;
2576       *)
2577         on_solaris=no
2578         ;;
2579     esac
2580     if test x$on_solaris = xyes && test x$gas_flag = xno; then
2581       conftest_s='
2582         .section ".tdata",#alloc,#write,#tls
2583 foo:    .long   25
2584         .text
2585         sethi   %tgd_hi22(foo), %o0
2586         add     %o0, %tgd_lo10(foo), %o1
2587         add     %l7, %o1, %o0, %tgd_add(foo)
2588         call    __tls_get_addr, %tgd_call(foo)
2589         sethi   %tldm_hi22(foo), %l1
2590         add     %l1, %tldm_lo10(foo), %l2
2591         add     %l7, %l2, %o0, %tldm_add(foo)
2592         call    __tls_get_addr, %tldm_call(foo)
2593         sethi   %tldo_hix22(foo), %l3
2594         xor     %l3, %tldo_lox10(foo), %l4
2595         add     %o0, %l4, %l5, %tldo_add(foo)
2596         sethi   %tie_hi22(foo), %o3
2597         add     %o3, %tie_lo10(foo), %o3
2598         ld      [%l7 + %o3], %o2, %tie_ld(foo)
2599         add     %g7, %o2, %o4, %tie_add(foo)
2600         sethi   %tle_hix22(foo), %l1
2601         xor     %l1, %tle_lox10(foo), %o5
2602         ld      [%g7 + %o5], %o1'
2603         tls_first_major=0
2604         tls_first_minor=0
2605     else
2606       conftest_s='
2607         .section ".tdata","awT",@progbits
2608 foo:    .long   25
2609         .text
2610         sethi   %tgd_hi22(foo), %o0
2611         add     %o0, %tgd_lo10(foo), %o1
2612         add     %l7, %o1, %o0, %tgd_add(foo)
2613         call    __tls_get_addr, %tgd_call(foo)
2614         sethi   %tldm_hi22(foo), %l1
2615         add     %l1, %tldm_lo10(foo), %l2
2616         add     %l7, %l2, %o0, %tldm_add(foo)
2617         call    __tls_get_addr, %tldm_call(foo)
2618         sethi   %tldo_hix22(foo), %l3
2619         xor     %l3, %tldo_lox10(foo), %l4
2620         add     %o0, %l4, %l5, %tldo_add(foo)
2621         sethi   %tie_hi22(foo), %o3
2622         add     %o3, %tie_lo10(foo), %o3
2623         ld      [%l7 + %o3], %o2, %tie_ld(foo)
2624         add     %g7, %o2, %o4, %tie_add(foo)
2625         sethi   %tle_hix22(foo), %l1
2626         xor     %l1, %tle_lox10(foo), %o5
2627         ld      [%g7 + %o5], %o1'
2628         tls_first_major=2
2629         tls_first_minor=14
2630         tls_as_opt="-32 --fatal-warnings"
2631       fi
2632         ;;
2633 changequote([,])dnl
2634 esac
2635 set_have_as_tls=no
2636 if test "x$enable_tls" = xno ; then
2637   : # TLS explicitly disabled.
2638 elif test "x$enable_tls" = xyes ; then
2639   set_have_as_tls=yes # TLS explicitly enabled.
2640 elif test -z "$tls_first_major"; then
2641   : # If we don't have a check, assume no support.
2642 else
2643   gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2644   [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2645   [set_have_as_tls=yes])
2646 fi
2647 if test $set_have_as_tls = yes ; then
2648   AC_DEFINE(HAVE_AS_TLS, 1,
2649             [Define if your assembler supports thread-local storage.])
2650 fi
2651
2652 # Target-specific assembler checks.
2653
2654 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2655 gcc_cv_ld_static_dynamic=no
2656 if test $in_tree_ld = yes ; then
2657   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2658     gcc_cv_ld_static_dynamic=yes
2659   fi
2660 elif test x$gcc_cv_ld != x; then
2661         # Check if linker supports -Bstatic/-Bdynamic option
2662         if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2663           && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2664                 gcc_cv_ld_static_dynamic=yes
2665         fi
2666 fi
2667 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2668         AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2669 [Define if your linker supports -Bstatic/-Bdynamic option.])
2670 fi
2671 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2672
2673 if test x"$demangler_in_ld" = xyes; then
2674   AC_MSG_CHECKING(linker --demangle support)
2675   gcc_cv_ld_demangle=no
2676   if test $in_tree_ld = yes; then
2677     if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2678       gcc_cv_ld_demangle=yes
2679     fi
2680   elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2681     # Check if the GNU linker supports --demangle option
2682     if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2683       gcc_cv_ld_demangle=yes
2684     fi
2685   fi
2686   if test x"$gcc_cv_ld_demangle" = xyes; then
2687     AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2688 [Define if your linker supports --demangle option.])
2689   fi
2690   AC_MSG_RESULT($gcc_cv_ld_demangle)
2691 fi
2692
2693 case "$target" in
2694   # All TARGET_ABI_OSF targets.
2695   alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2696     gcc_GAS_CHECK_FEATURE([explicit relocation support],
2697         gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2698 [       .set nomacro
2699         .text
2700         extbl   $3, $2, $3      !lituse_bytoff!1
2701         ldq     $2, a($29)      !literal!1
2702         ldq     $4, b($29)      !literal!2
2703         ldq_u   $3, 0($2)       !lituse_base!1
2704         ldq     $27, f($29)     !literal!5
2705         jsr     $26, ($27), f   !lituse_jsr!5
2706         ldah    $29, 0($26)     !gpdisp!3
2707         lda     $0, c($29)      !gprel
2708         ldah    $1, d($29)      !gprelhigh
2709         lda     $1, d($1)       !gprellow
2710         lda     $29, 0($29)     !gpdisp!3],,
2711     [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2712   [Define if your assembler supports explicit relocations.])])
2713     gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2714         gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2715 [       .set nomacro
2716         .text
2717         ldq     $27, a($29)     !literal!1
2718         jsr     $26, ($27), a   !lituse_jsrdirect!1],,
2719     [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2720   [Define if your assembler supports the lituse_jsrdirect relocation.])])
2721     ;;
2722
2723   cris-*-*)
2724     gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2725       gcc_cv_as_cris_no_mul_bug,[2,15,91],
2726       [-no-mul-bug-abort], [.text],,
2727       [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2728                 [Define if your assembler supports the -no-mul-bug-abort option.])])
2729     ;;
2730
2731   sparc*-*-*)
2732     gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2733       [.register %g2, #scratch],,
2734       [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2735                 [Define if your assembler supports .register.])])
2736
2737     gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2738       [-relax], [.text],,
2739       [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2740                 [Define if your assembler supports -relax option.])])
2741
2742     gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2743       gcc_cv_as_sparc_ua_pcrel,,
2744       [-K PIC],
2745 [.text
2746 foo:
2747         nop
2748 .data
2749 .align 4
2750 .byte 0
2751 .uaword %r_disp32(foo)],
2752       [if test x$gcc_cv_ld != x \
2753        && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2754          gcc_cv_as_sparc_ua_pcrel=yes
2755        fi
2756        rm -f conftest],
2757       [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2758                 [Define if your assembler and linker support unaligned PC relative relocs.])
2759
2760       gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2761         gcc_cv_as_sparc_ua_pcrel_hidden,,
2762         [-K PIC],
2763 [.data
2764 .align 4
2765 .byte 0x31
2766 .uaword %r_disp32(foo)
2767 .byte 0x32, 0x33, 0x34
2768 .global foo
2769 .hidden foo
2770 foo:
2771 .skip 4],
2772         [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2773          && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2774          && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2775             | grep ' 31000000 07323334' > /dev/null 2>&1; then
2776             if $gcc_cv_objdump -R conftest 2> /dev/null \
2777                | grep 'DISP32' > /dev/null 2>&1; then
2778                 :
2779             else
2780                 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2781             fi
2782          fi
2783          rm -f conftest],
2784          [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2785                    [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2786     ]) # unaligned pcrel relocs
2787
2788     gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2789       gcc_cv_as_sparc_offsetable_lo10,,
2790       [-xarch=v9],
2791 [.text
2792         or %g1, %lo(ab) + 12, %g1
2793         or %g1, %lo(ab + 12), %g1],
2794       [if test x$gcc_cv_objdump != x \
2795        && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2796           | grep ' 82106000 82106000' > /dev/null 2>&1; then
2797          gcc_cv_as_sparc_offsetable_lo10=yes
2798        fi],
2799        [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2800                  [Define if your assembler supports offsetable %lo().])])
2801     ;;
2802
2803 changequote(,)dnl
2804   i[34567]86-*-* | x86_64-*-*)
2805 changequote([,])dnl
2806     case $target_os in
2807       cygwin* | pe | mingw32*)
2808         # Used for DWARF 2 in PE
2809         gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2810           gcc_cv_as_ix86_pe_secrel32,
2811           [2,15,91],,
2812 [.text
2813 foo:    nop
2814 .data
2815         .secrel32 foo],
2816           [if test x$gcc_cv_ld != x \
2817            && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2818              gcc_cv_as_ix86_pe_secrel32=yes
2819            fi
2820            rm -f conftest],
2821           [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2822             [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2823         ;;
2824     esac
2825
2826     gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2827        gcc_cv_as_ix86_filds_fists,
2828       [2,9,0],, [filds mem; fists mem],,
2829       [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2830         [Define if your assembler uses the new HImode fild and fist notation.])])
2831
2832     gcc_GAS_CHECK_FEATURE([cmov syntax],
2833       gcc_cv_as_ix86_cmov_sun_syntax,,,
2834       [cmovl.l %edx, %eax],,
2835       [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2836         [Define if your assembler supports the Sun syntax for cmov.])])
2837
2838     gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2839       gcc_cv_as_ix86_ffreep,,,
2840       [ffreep %st(1)],,
2841       [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2842         [Define if your assembler supports the ffreep mnemonic.])])
2843
2844     # This one is used unconditionally by i386.[ch]; it is to be defined
2845     # to 1 if the feature is present, 0 otherwise.
2846     gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2847         gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2848 [       .text
2849 .L0:
2850         nop
2851         .data
2852         .long .L0@GOTOFF])
2853     AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2854       [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2855       [Define true if the assembler supports '.long foo@GOTOFF'.])
2856     ;;
2857
2858   ia64*-*-*)
2859     gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2860         gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2861 [       .text
2862         addl r15 = @ltoffx(x#), gp
2863         ;;
2864         ld8.mov r16 = [[r15]], x#],,
2865     [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2866           [Define if your assembler supports ltoffx and ldxmov relocations.])])
2867
2868     ;;
2869
2870   powerpc*-*-*)
2871     case $target in
2872       *-*-aix*) conftest_s='    .machine "pwr5"
2873         .csect .text[[PR]]
2874         mfcr 3,128';;
2875       *-*-darwin*)
2876         gcc_GAS_CHECK_FEATURE([.machine directive support],
2877           gcc_cv_as_machine_directive,,,
2878           [     .machine ppc7400])
2879         if test x$gcc_cv_as_machine_directive != xyes; then
2880           echo "*** This target requires an assembler supporting \".machine\"" >&2
2881           echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2882           test x$build = x$target && exit 1
2883         fi
2884         conftest_s='    .text
2885         mfcr r3,128';;
2886       *) conftest_s='   .machine power4
2887         .text
2888         mfcr 3,128';;
2889     esac
2890
2891     gcc_GAS_CHECK_FEATURE([mfcr field support],
2892       gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2893       [$conftest_s],,
2894       [AC_DEFINE(HAVE_AS_MFCRF, 1,
2895           [Define if your assembler supports mfcr field.])])
2896
2897     case $target in
2898       *-*-aix*) conftest_s='    .machine "pwr5"
2899         .csect .text[[PR]]
2900         popcntb 3,3';;
2901       *) conftest_s='   .machine power5
2902         .text
2903         popcntb 3,3';;
2904     esac
2905
2906     gcc_GAS_CHECK_FEATURE([popcntb support],
2907       gcc_cv_as_powerpc_popcntb, [2,17,0],,
2908       [$conftest_s],,
2909       [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2910           [Define if your assembler supports popcntb field.])])
2911
2912     case $target in
2913       *-*-aix*) conftest_s='    .machine "pwr5x"
2914         .csect .text[[PR]]
2915         frin 1,1';;
2916       *) conftest_s='   .machine power5
2917         .text
2918         frin 1,1';;
2919     esac
2920
2921     gcc_GAS_CHECK_FEATURE([fp round support],
2922       gcc_cv_as_powerpc_fprnd, [2,17,0],,
2923       [$conftest_s],,
2924       [AC_DEFINE(HAVE_AS_FPRND, 1,
2925           [Define if your assembler supports fprnd.])])
2926
2927     case $target in
2928       *-*-aix*) conftest_s='    .csect .text[[PR]]
2929 LCF..0:
2930         addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2931       *-*-darwin*)
2932         conftest_s='    .text
2933 LCF0:
2934         addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2935       *) conftest_s='   .text
2936 .LCF0:
2937         addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2938     esac
2939
2940     gcc_GAS_CHECK_FEATURE([rel16 relocs],
2941       gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2942       [$conftest_s],,
2943       [AC_DEFINE(HAVE_AS_REL16, 1,
2944           [Define if your assembler supports R_PPC_REL16 relocs.])])
2945     ;;
2946
2947   mips*-*-*)
2948     gcc_GAS_CHECK_FEATURE([explicit relocation support],
2949       gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2950 [       lw $4,%gp_rel(foo)($4)],,
2951       [if test x$target_cpu_default = x
2952        then target_cpu_default=MASK_EXPLICIT_RELOCS
2953        else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2954        fi])
2955     gcc_GAS_CHECK_FEATURE([-mno-shared support],
2956       gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
2957       [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
2958                  [Define if the assembler understands -mno-shared.])])
2959     ;;
2960 esac
2961
2962 # Mips and HP-UX need the GNU assembler.
2963 # Linux on IA64 might be able to use the Intel assembler.
2964
2965 case "$target" in
2966   mips*-*-* | *-*-hpux* )
2967     if test x$gas_flag = xyes \
2968        || test x"$host" != x"$build" \
2969        || test ! -x "$gcc_cv_as" \
2970        || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2971       :
2972     else
2973       echo "*** This configuration requires the GNU assembler" >&2
2974       exit 1
2975     fi
2976     ;;
2977 esac
2978
2979 # ??? Not all targets support dwarf2 debug_line, even within a version
2980 # of gas.  Moreover, we need to emit a valid instruction to trigger any
2981 # info to the output file.  So, as supported targets are added to gas 2.11,
2982 # add some instruction here to (also) show we expect this might work.
2983 # ??? Once 2.11 is released, probably need to add first known working
2984 # version to the per-target configury.
2985 case "$target" in
2986   i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2987   | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2988   | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-*)
2989     insn="nop"
2990     ;;
2991   ia64*-*-* | s390*-*-*)
2992     insn="nop 0"
2993     ;;
2994   mmix-*-*)
2995     insn="swym 0"
2996     ;;
2997 esac
2998 if test x"$insn" != x; then
2999  conftest_s="\
3000         .file 1 \"conftest.s\"
3001         .loc 1 3 0
3002         $insn"
3003  gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3004   gcc_cv_as_dwarf2_debug_line,
3005   [elf,2,11,0],, [$conftest_s],
3006   [if test x$gcc_cv_objdump != x \
3007    && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3008       | grep debug_line > /dev/null 2>&1; then
3009      gcc_cv_as_dwarf2_debug_line=yes
3010    fi])
3011
3012 # The .debug_line file table must be in the exact order that
3013 # we specified the files, since these indices are also used
3014 # by DW_AT_decl_file.  Approximate this test by testing if
3015 # the assembler bitches if the same index is assigned twice.
3016  gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3017   gcc_cv_as_dwarf2_file_buggy,,,
3018 [       .file 1 "foo.s"
3019         .file 1 "bar.s"])
3020
3021  if test $gcc_cv_as_dwarf2_debug_line = yes \
3022  && test $gcc_cv_as_dwarf2_file_buggy = no; then
3023         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3024   [Define if your assembler supports dwarf2 .file/.loc directives,
3025    and preserves file table indices exactly as given.])
3026  fi
3027
3028  gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3029   gcc_cv_as_gdwarf2_flag,
3030   [elf,2,11,0], [--gdwarf2], [$insn],,
3031   [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3032 [Define if your assembler supports the --gdwarf2 option.])])
3033
3034  gcc_GAS_CHECK_FEATURE([--gstabs option],
3035   gcc_cv_as_gstabs_flag,
3036   [elf,2,11,0], [--gstabs], [$insn],
3037   [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3038    # and warns about it, but still exits successfully.  So check for
3039    # this.
3040    if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3041    then :
3042    else gcc_cv_as_gstabs_flag=yes
3043    fi],
3044   [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3045 [Define if your assembler supports the --gstabs option.])])
3046 fi
3047
3048 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3049 gcc_cv_ld_ro_rw_mix=unknown
3050 if test $in_tree_ld = yes ; then
3051   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3052      && test $in_tree_ld_is_elf = yes; then
3053     gcc_cv_ld_ro_rw_mix=read-write
3054   fi
3055 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3056   echo '.section myfoosect, "a"' > conftest1.s
3057   echo '.section myfoosect, "aw"' > conftest2.s
3058   echo '.byte 1' >> conftest2.s
3059   echo '.section myfoosect, "a"' > conftest3.s
3060   echo '.byte 0' >> conftest3.s
3061   if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3062      && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3063      && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3064      && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3065         conftest2.o conftest3.o > /dev/null 2>&1; then
3066     gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3067                          | sed -e '/myfoosect/!d' -e N`
3068     if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3069       if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3070         gcc_cv_ld_ro_rw_mix=read-only
3071       else
3072         gcc_cv_ld_ro_rw_mix=read-write
3073       fi
3074     fi
3075   fi
3076 changequote(,)dnl
3077   rm -f conftest.* conftest[123].*
3078 changequote([,])dnl
3079 fi
3080 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3081         AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3082   [Define if your linker links a mix of read-only
3083    and read-write sections into a read-write section.])
3084 fi
3085 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3086
3087 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3088 gcc_cv_ld_eh_frame_hdr=no
3089 if test $in_tree_ld = yes ; then
3090   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3091      && test $in_tree_ld_is_elf = yes; then
3092     gcc_cv_ld_eh_frame_hdr=yes
3093   fi
3094 elif test x$gcc_cv_ld != x; then
3095         # Check if linker supports --eh-frame-hdr option
3096         if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3097                 gcc_cv_ld_eh_frame_hdr=yes
3098         fi
3099 fi
3100 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3101 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3102         AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3103 [Define if your linker supports --eh-frame-hdr option.])
3104 fi
3105 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3106
3107 AC_MSG_CHECKING(linker position independent executable support)
3108 gcc_cv_ld_pie=no
3109 if test $in_tree_ld = yes ; then
3110   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3111      && test $in_tree_ld_is_elf = yes; then
3112     gcc_cv_ld_pie=yes
3113   fi
3114 elif test x$gcc_cv_ld != x; then
3115         # Check if linker supports -pie option
3116         if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3117                 gcc_cv_ld_pie=yes
3118         fi
3119 fi
3120 if test x"$gcc_cv_ld_pie" = xyes; then
3121         AC_DEFINE(HAVE_LD_PIE, 1,
3122 [Define if your linker supports -pie option.])
3123 fi
3124 AC_MSG_RESULT($gcc_cv_ld_pie)
3125
3126 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3127 gcc_cv_ld_eh_gc_sections=no
3128 if test $in_tree_ld = yes ; then
3129   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3130      && test $in_tree_ld_is_elf = yes; then
3131     gcc_cv_ld_eh_gc_sections=yes
3132   fi
3133 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3134   cat > conftest.s <<EOF
3135         .section        .text
3136 .globl _start
3137         .type _start, @function
3138 _start:
3139         .long foo
3140         .size _start, .-_start
3141         .section        .text.foo,"ax",@progbits
3142         .type foo, @function
3143 foo:
3144         .long 0
3145         .size foo, .-foo
3146         .section        .gcc_except_table.foo,"a",@progbits
3147 .L0:
3148         .long 0
3149         .section        .eh_frame,"a",@progbits
3150         .long .L0
3151 EOF
3152   if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3153     if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3154          | grep "gc-sections option ignored" > /dev/null; then
3155       gcc_cv_ld_eh_gc_sections=no
3156     elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3157       gcc_cv_ld_eh_gc_sections=yes
3158     fi
3159   fi
3160   rm -f conftest.s conftest.o conftest
3161 fi
3162 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3163         AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3164   [Define if your linker supports garbage collection of
3165    sections in presence of EH frames.])
3166 fi
3167 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3168
3169 # --------
3170 # UNSORTED
3171 # --------
3172
3173 AC_CACHE_CHECK(linker --as-needed support,
3174 gcc_cv_ld_as_needed,
3175 [gcc_cv_ld_as_needed=no
3176 if test $in_tree_ld = yes ; then
3177   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3178      && test $in_tree_ld_is_elf = yes; then
3179     gcc_cv_ld_as_needed=yes
3180   fi
3181 elif test x$gcc_cv_ld != x; then
3182         # Check if linker supports --as-needed and --no-as-needed options
3183         if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3184                 gcc_cv_ld_as_needed=yes
3185         fi
3186 fi
3187 ])
3188 if test x"$gcc_cv_ld_as_needed" = xyes; then
3189         AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3190 [Define if your linker supports --as-needed and --no-as-needed options.])
3191 fi
3192
3193 case "$target:$tm_file" in
3194   powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3195     AC_CACHE_CHECK(linker support for omitting dot symbols,
3196     gcc_cv_ld_no_dot_syms,
3197     [gcc_cv_ld_no_dot_syms=no
3198     if test $in_tree_ld = yes ; then
3199       if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3200         gcc_cv_ld_no_dot_syms=yes
3201       fi
3202     elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3203       cat > conftest1.s <<EOF
3204         .text
3205         bl .foo
3206 EOF
3207       cat > conftest2.s <<EOF
3208         .section ".opd","aw"
3209         .align 3
3210         .globl foo
3211         .type foo,@function
3212 foo:
3213         .quad .LEfoo,.TOC.@tocbase,0
3214         .text
3215 .LEfoo:
3216         blr
3217         .size foo,.-.LEfoo
3218 EOF
3219       if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3220          && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3221          && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3222         gcc_cv_ld_no_dot_syms=yes
3223       fi
3224       rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3225     fi
3226     ])
3227     if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3228       AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3229     [Define if your PowerPC64 linker only needs function descriptor syms.])
3230     fi
3231     ;;
3232 esac
3233
3234 AC_CACHE_CHECK(linker --sysroot support,
3235   gcc_cv_ld_sysroot,
3236   [gcc_cv_ld_sysroot=no
3237   if test $in_tree_ld = yes ; then
3238       if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3239         gcc_cv_ld_sysroot=yes
3240       fi
3241   elif test x$gcc_cv_ld != x; then
3242     if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3243       gcc_cv_ld_sysroot=yes
3244     fi
3245   fi])
3246 if test x"$gcc_cv_ld_sysroot" = xyes; then
3247   AC_DEFINE(HAVE_LD_SYSROOT, 1,
3248   [Define if your linker supports --sysroot.])
3249 fi
3250
3251 if test x$with_sysroot = x && test x$host = x$target \
3252    && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
3253   AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3254 [Define to PREFIX/include if cpp should also search that directory.])
3255 fi
3256
3257 # Test for stack protector support in target C library.
3258 case "$target" in
3259   *-*-linux*)
3260     AC_CACHE_CHECK(__stack_chk_fail in target GNU C library,
3261       gcc_cv_libc_provides_ssp,
3262       [gcc_cv_libc_provides_ssp=no
3263       if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3264         if test "x$with_sysroot" = x; then
3265           glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3266         elif test "x$with_sysroot" = xyes; then
3267           glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3268         else
3269           glibc_header_dir="${with_sysroot}/usr/include"
3270         fi
3271       else
3272         glibc_header_dir=/usr/include
3273       fi
3274       # glibc 2.4 and later provides __stack_chk_fail and
3275       # either __stack_chk_guard, or TLS access to stack guard canary.
3276       if test -f $glibc_header_dir/features.h \
3277          && $EGREP '^@<:@       @:>@*#[         ]*define[       ]+__GNU_LIBRARY__[      ]+([1-9][0-9]|[6-9])' \
3278             $glibc_header_dir/features.h > /dev/null; then
3279         if $EGREP '^@<:@        @:>@*#[         ]*define[       ]+__GLIBC__[    ]+([1-9][0-9]|[3-9])' \
3280            $glibc_header_dir/features.h > /dev/null; then
3281           gcc_cv_libc_provides_ssp=yes
3282         elif $EGREP '^@<:@      @:>@*#[         ]*define[       ]+__GLIBC__[    ]+2' \
3283              $glibc_header_dir/features.h > /dev/null \
3284              && $EGREP '^@<:@   @:>@*#[         ]*define[       ]+__GLIBC_MINOR__[      ]+([1-9][0-9]|[4-9])' \
3285              $glibc_header_dir/features.h > /dev/null; then
3286           gcc_cv_libc_provides_ssp=yes
3287         fi
3288       fi]) ;;
3289   *) gcc_cv_libc_provides_ssp=no ;;
3290 esac
3291 if test x$gcc_cv_libc_provides_ssp = xyes; then
3292   AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3293             [Define if your target C library provides stack protector support])
3294 fi
3295
3296 # Check if TFmode long double should be used by default or not.
3297 # Some glibc targets used DFmode long double, but with glibc 2.4
3298 # and later they can use TFmode.
3299 case "$target" in
3300   powerpc*-*-*gnu* | \
3301   sparc*-*-linux* | \
3302   s390*-*-linux* | \
3303   alpha*-*-linux*)
3304     AC_ARG_WITH(long-double-128,
3305 [  --with-long-double-128  Use 128-bit long double by default.],
3306       gcc_cv_target_ldbl128="$with_long_double_128",
3307       [gcc_cv_target_ldbl128=no
3308       if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3309         if test "x$with_sysroot" = x; then
3310           glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3311         elif test "x$with_sysroot" = xyes; then
3312           glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3313         else
3314           glibc_header_dir="${with_sysroot}/usr/include"
3315         fi
3316       else
3317         glibc_header_dir=/usr/include
3318       fi
3319       grep '^[  ]*#[    ]*define[       ][      ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3320         $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3321       && gcc_cv_target_ldbl128=yes])
3322     ;;
3323 esac
3324 if test x$gcc_cv_target_ldbl128 = xyes; then
3325   AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3326             [Define if TFmode long double should be the default])
3327 fi
3328
3329 # Find out what GC implementation we want, or may, use.
3330 AC_ARG_WITH(gc,
3331 [  --with-gc={page,zone}   choose the garbage collection mechanism to use
3332                           with the compiler],
3333 [case "$withval" in
3334   page)
3335     GGC=ggc-$withval
3336     ;;
3337   zone)
3338     GGC=ggc-$withval
3339     AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3340     ;;
3341   *)
3342     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3343     ;;
3344 esac],
3345 [GGC=ggc-page])
3346 AC_SUBST(GGC)
3347 echo "Using $GGC for garbage collection."
3348
3349 # Use the system's zlib library.
3350 zlibdir=-L../zlib
3351 zlibinc="-I\$(srcdir)/../zlib"
3352 AC_ARG_WITH(system-zlib,
3353 [  --with-system-zlib      use installed libz],
3354 zlibdir=
3355 zlibinc=
3356 )
3357 AC_SUBST(zlibdir)
3358 AC_SUBST(zlibinc)
3359
3360 dnl Very limited version of automake's enable-maintainer-mode
3361
3362 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3363   dnl maintainer-mode is disabled by default
3364   AC_ARG_ENABLE(maintainer-mode,
3365 [  --enable-maintainer-mode
3366                           enable make rules and dependencies not useful
3367                           (and sometimes confusing) to the casual installer],
3368       maintainer_mode=$enableval,
3369       maintainer_mode=no)
3370
3371 AC_MSG_RESULT($maintainer_mode)
3372
3373 if test "$maintainer_mode" = "yes"; then
3374   MAINT=''
3375 else
3376   MAINT='#'
3377 fi
3378 AC_SUBST(MAINT)dnl
3379
3380 # --------------
3381 # Language hooks
3382 # --------------
3383
3384 # Make empty files to contain the specs and options for each language.
3385 # Then add #include lines to for a compiler that has specs and/or options.
3386
3387 subdirs=
3388 lang_opt_files=
3389 lang_specs_files=
3390 lang_tree_files=
3391 # These (without "all_") are set in each config-lang.in.
3392 # `language' must be a single word so is spelled singularly.
3393 all_languages=
3394 all_boot_languages=
3395 all_compilers=
3396 all_stagestuff=
3397 all_outputs='Makefile gccbug mklibgcc libada-mk'
3398 # List of language makefile fragments.
3399 all_lang_makefrags=
3400 # List of language subdirectory makefiles.  Deprecated.
3401 all_lang_makefiles=
3402 # Files for gengtype
3403 all_gtfiles="$target_gtfiles"
3404 # Files for gengtype with language
3405 all_gtfiles_files_langs=
3406 all_gtfiles_files_files=
3407
3408 # These are the languages that are set in --enable-languages,
3409 # and are available in the GCC tree.
3410 all_selected_languages=
3411
3412 # Add the language fragments.
3413 # Languages are added via two mechanisms.  Some information must be
3414 # recorded in makefile variables, these are defined in config-lang.in.
3415 # We accumulate them and plug them into the main Makefile.
3416 # The other mechanism is a set of hooks for each of the main targets
3417 # like `clean', `install', etc.
3418
3419 language_hooks="Make-hooks"
3420
3421 for lang in ${srcdir}/*/config-lang.in
3422 do
3423 changequote(,)dnl
3424         test "$lang" = "${srcdir}/*/config-lang.in" && continue
3425
3426         lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
3427         if test "x$lang_alias" = x
3428         then
3429               echo "$lang doesn't set \$language." 1>&2
3430               exit 1
3431         fi
3432         subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3433         subdirs="$subdirs $subdir"
3434         case ",$enable_languages," in
3435         *,$lang_alias,*)
3436             all_selected_languages="$all_selected_languages $lang_alias"
3437             if test -f $srcdir/$subdir/lang-specs.h; then
3438                 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3439             fi
3440             ;;
3441         esac
3442 changequote([,])dnl
3443
3444         language=
3445         boot_language=
3446         compilers=
3447         stagestuff=
3448         outputs=
3449         gtfiles=
3450         subdir_requires=
3451         . ${srcdir}/$subdir/config-lang.in
3452         if test "x$language" = x
3453         then
3454                 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3455                 exit 1
3456         fi
3457
3458         ok=:
3459         case ",$enable_languages," in
3460                 *,$lang_alias,*) ;;
3461                 *)
3462                         for i in $subdir_requires; do
3463                                 test -f "${srcdir}/$i/config-lang.in" && continue
3464                                 ok=false
3465                                 break
3466                         done
3467                 ;;
3468         esac
3469         $ok || continue
3470
3471         all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3472         if test -f $srcdir/$subdir/lang.opt; then
3473             lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3474         fi
3475         if test -f $srcdir/$subdir/$subdir-tree.def; then
3476             lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3477         fi
3478         if test -f ${srcdir}/$subdir/Makefile.in
3479                 then all_lang_makefiles="$subdir/Makefile"
3480         fi
3481         all_languages="$all_languages $language"
3482         if test "x$boot_language" = xyes
3483         then
3484                 all_boot_languages="$all_boot_languages $language"
3485         fi
3486         all_compilers="$all_compilers $compilers"
3487         all_stagestuff="$all_stagestuff $stagestuff"
3488         all_outputs="$all_outputs $outputs"
3489         all_gtfiles="$all_gtfiles $gtfiles"
3490         for f in $gtfiles
3491         do
3492                 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3493                 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3494         done
3495 done
3496
3497 # Pick up gtfiles for c
3498 gtfiles=
3499 subdir="c"
3500 . ${srcdir}/c-config-lang.in
3501 all_gtfiles="$all_gtfiles $gtfiles"
3502 for f in $gtfiles
3503 do
3504         all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3505         all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3506 done
3507
3508 check_languages=
3509 for language in $all_selected_languages
3510 do
3511         check_languages="$check_languages check-$language"
3512 done
3513
3514 # We link each language in with a set of hooks, reached indirectly via
3515 # lang.${target}.  Only do so for selected languages.
3516
3517 rm -f Make-hooks
3518 touch Make-hooks
3519 target_list="all.cross start.encap rest.encap tags \
3520         install-common install-man install-info dvi pdf html \
3521         uninstall info man srcextra srcman srcinfo \
3522         mostlyclean clean distclean maintainer-clean \
3523         stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3524
3525 for t in $target_list
3526 do
3527         x=
3528         for lang in $all_selected_languages
3529         do
3530                 x="$x $lang.$t"
3531         done
3532         echo "lang.$t: $x" >> Make-hooks
3533 done
3534
3535 # --------
3536 # UNSORTED
3537 # --------
3538
3539 # Create .gdbinit.
3540
3541 echo "dir ." > .gdbinit
3542 echo "dir ${srcdir}" >> .gdbinit
3543 if test x$gdb_needs_out_file_path = xyes
3544 then
3545         echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3546 fi
3547 if test "x$subdirs" != x; then
3548         for s in $subdirs
3549         do
3550                 echo "dir ${srcdir}/$s" >> .gdbinit
3551         done
3552 fi
3553 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3554
3555 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3556 # absolute path for gcc_tooldir based on inserting the number of up-directory
3557 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3558 # $(libsubdir)/@(unlibsubdir) based path.
3559 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3560 # make and thus we'd get different behavior depending on where we built the
3561 # sources.
3562 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3563     gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3564 else
3565 changequote(<<, >>)dnl
3566 # An explanation of the sed strings:
3567 #  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
3568 #  -e 's|/$||'            match a trailing forward slash and eliminates it
3569 #  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
3570 #  -e 's|/[^/]*|../|g'    replaces each occurrence of /<directory> with ../
3571 #
3572 # (*) Note this pattern overwrites the first character of the string
3573 # with a forward slash if one is not already present.  This is not a
3574 # problem because the exact names of the sub-directories concerned is
3575 # unimportant, just the number of them matters.
3576 #
3577 # The practical upshot of these patterns is like this:
3578 #
3579 #  prefix     exec_prefix        result
3580 #  ------     -----------        ------
3581 #   /foo        /foo/bar          ../
3582 #   /foo/       /foo/bar          ../
3583 #   /foo        /foo/bar/         ../
3584 #   /foo/       /foo/bar/         ../
3585 #   /foo        /foo/bar/ugg      ../../
3586 #
3587     dollar='$$'
3588     gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3589 changequote([, ])dnl
3590 fi
3591 AC_SUBST(gcc_tooldir)
3592 AC_SUBST(dollar)
3593
3594 # Find a directory in which to install a shared libgcc.
3595
3596 AC_ARG_ENABLE(version-specific-runtime-libs,
3597 [  --enable-version-specific-runtime-libs
3598                           specify that runtime libraries should be
3599                           installed in a compiler-specific directory])
3600
3601 AC_ARG_WITH(slibdir,
3602 [  --with-slibdir=DIR      shared libraries in DIR [[LIBDIR]]],
3603 slibdir="$with_slibdir",
3604 if test "${enable_version_specific_runtime_libs+set}" = set; then
3605   slibdir='$(libsubdir)'
3606 elif test "$host" != "$target"; then
3607   slibdir='$(build_tooldir)/lib'
3608 else
3609   slibdir='$(libdir)'
3610 fi)
3611 AC_SUBST(slibdir)
3612
3613 objdir=`${PWDCMD-pwd}`
3614 AC_SUBST(objdir)
3615
3616 AC_ARG_WITH(datarootdir,
3617 [  --with-datarootdir=DIR  Use DIR as the data root [[PREFIX/share]]],
3618 datarootdir="\${prefix}/$with_datarootdir",
3619 datarootdir='$(prefix)/share')
3620 AC_SUBST(datarootdir)
3621
3622 AC_ARG_WITH(docdir,
3623 [  --with-docdir=DIR       Install documentation in DIR [[DATAROOTDIR]]],
3624 docdir="\${prefix}/$with_docdir",
3625 docdir='$(datarootdir)')
3626 AC_SUBST(docdir)
3627
3628 AC_ARG_WITH(htmldir,
3629 [  --with-htmldir=DIR      html documentation in in DIR [[DOCDIR]]],
3630 htmldir="\${prefix}/$with_htmldir",
3631 htmldir='$(docdir)')
3632 AC_SUBST(htmldir)
3633
3634 # Substitute configuration variables
3635 AC_SUBST(subdirs)
3636 AC_SUBST(srcdir)
3637 AC_SUBST(all_boot_languages)
3638 AC_SUBST(all_compilers)
3639 AC_SUBST(all_gtfiles)
3640 AC_SUBST(all_gtfiles_files_langs)
3641 AC_SUBST(all_gtfiles_files_files)
3642 AC_SUBST(all_lang_makefrags)
3643 AC_SUBST(all_lang_makefiles)
3644 AC_SUBST(all_languages)
3645 AC_SUBST(all_selected_languages)
3646 AC_SUBST(all_stagestuff)
3647 AC_SUBST(build_exeext)
3648 AC_SUBST(build_install_headers_dir)
3649 AC_SUBST(build_xm_file_list)
3650 AC_SUBST(build_xm_include_list)
3651 AC_SUBST(build_xm_defines)
3652 AC_SUBST(check_languages)
3653 AC_SUBST(cc_set_by_configure)
3654 AC_SUBST(quoted_cc_set_by_configure)
3655 AC_SUBST(cpp_install_dir)
3656 AC_SUBST(xmake_file)
3657 AC_SUBST(tmake_file)
3658 AC_SUBST(extra_gcc_objs)
3659 AC_SUBST(extra_headers_list)
3660 AC_SUBST(extra_objs)
3661 AC_SUBST(extra_parts)
3662 AC_SUBST(extra_passes)
3663 AC_SUBST(extra_programs)
3664 AC_SUBST(float_h_file)
3665 AC_SUBST(gcc_config_arguments)
3666 AC_SUBST(gcc_gxx_include_dir)
3667 AC_SUBST(host_exeext)
3668 AC_SUBST(host_xm_file_list)
3669 AC_SUBST(host_xm_include_list)
3670 AC_SUBST(host_xm_defines)
3671 AC_SUBST(out_host_hook_obj)
3672 AC_SUBST(install)
3673 AC_SUBST(lang_opt_files)
3674 AC_SUBST(lang_specs_files)
3675 AC_SUBST(lang_tree_files)
3676 AC_SUBST(local_prefix)
3677 AC_SUBST(md_file)
3678 AC_SUBST(objc_boehm_gc)
3679 AC_SUBST(out_file)
3680 AC_SUBST(out_object_file)
3681 AC_SUBST(stage_prefix_set_by_configure)
3682 AC_SUBST(quoted_stage_prefix_set_by_configure)
3683 AC_SUBST(thread_file)
3684 AC_SUBST(tm_file_list)
3685 AC_SUBST(tm_include_list)
3686 AC_SUBST(tm_defines)
3687 AC_SUBST(tm_p_file_list)
3688 AC_SUBST(tm_p_include_list)
3689 AC_SUBST(xm_file_list)
3690 AC_SUBST(xm_include_list)
3691 AC_SUBST(xm_defines)
3692 AC_SUBST(c_target_objs)
3693 AC_SUBST(cxx_target_objs)
3694 AC_SUBST(target_cpu_default)
3695
3696 AC_SUBST_FILE(language_hooks)
3697
3698 # Echo link setup.
3699 if test x${build} = x${host} ; then
3700   if test x${host} = x${target} ; then
3701     echo "Links are now set up to build a native compiler for ${target}." 1>&2
3702   else
3703     echo "Links are now set up to build a cross-compiler" 1>&2
3704     echo " from ${host} to ${target}." 1>&2
3705   fi
3706 else
3707   if test x${host} = x${target} ; then
3708     echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3709     echo " for ${target}." 1>&2
3710   else
3711     echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3712     echo " from ${host} to ${target}." 1>&2
3713   fi
3714 fi
3715
3716 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3717 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3718
3719 # Configure the subdirectories
3720 # AC_CONFIG_SUBDIRS($subdirs)
3721
3722 # Create the Makefile
3723 # and configure language subdirectories
3724 AC_CONFIG_FILES($all_outputs)
3725
3726 AC_CONFIG_COMMANDS([default],
3727 [
3728 case ${CONFIG_HEADERS} in
3729   *auto-host.h:config.in*)
3730   echo > cstamp-h ;;
3731 esac
3732 # Make sure all the subdirs exist.
3733 for d in $subdirs doc build
3734 do
3735     test -d $d || mkdir $d
3736 done
3737 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3738 # bootstrapping and the installation procedure can still use
3739 # CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
3740 # FLAGS_TO_PASS has been modified to solve the problem there.
3741 # This is virtually a duplicate of what happens in configure.lang; we do
3742 # an extra check to make sure this only happens if ln -s can be used.
3743 case "$LN_S" in
3744   *-s*)
3745     for d in ${subdirs} ; do
3746         STARTDIR=`${PWDCMD-pwd}`
3747         cd $d
3748         for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3749         do
3750                 rm -f $t
3751                 $LN_S ../$t $t 2>/dev/null
3752         done
3753         cd $STARTDIR
3754     done
3755   ;;
3756 esac
3757 ],
3758 [subdirs='$subdirs'])
3759 AC_OUTPUT