gcc/configure.in

   1 # configure.in for GCC
   2 # Process this file with autoconf to generate a configuration script.
   3
   4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003
   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, 59 Temple Place - Suite 330, Boston, MA
  22 #02111-1307, USA.
  23
  24 # --------------------------------
  25 # Initialization and sanity checks
  26 # --------------------------------
  27
  28 AC_PREREQ(2.13)
  29 AC_INIT(tree.c)
  30 AC_CONFIG_HEADER(auto-host.h:config.in)
  31
  32 # Determine the host, build, and target systems
  33 AC_CANONICAL_SYSTEM
  34
  35 # Define variables host_canonical and build_canonical
  36 build_canonical=${build}
  37 host_canonical=${host}
  38 AC_SUBST(build_canonical)
  39 AC_SUBST(host_canonical)
  40
  41 target_subdir=
  42 if test "${host}" != "${target}" ; then
  43     target_subdir=${target_alias}/
  44 fi
  45 AC_SUBST(target_subdir)
  46
  47 # Set program_transform_name
  48 AC_ARG_PROGRAM
  49
  50 # Check for bogus environment variables.
  51 # Test if LIBRARY_PATH contains the notation for the current directory
  52 # since this would lead to problems installing/building glibc.
  53 # LIBRARY_PATH contains the current directory if one of the following
  54 # is true:
  55 # - one of the terminals (":" and ";") is the first or last sign
  56 # - two terminals occur directly after each other
  57 # - the path contains an element with a dot in it
  58 AC_MSG_CHECKING(LIBRARY_PATH variable)
  59 changequote(,)dnl
  60 case ${LIBRARY_PATH} in
  61   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  62     library_path_setting="contains current directory"
  63     ;;
  64   *)
  65     library_path_setting="ok"
  66     ;;
  67 esac
  68 changequote([,])dnl
  69 AC_MSG_RESULT($library_path_setting)
  70 if test "$library_path_setting" != "ok"; then
  71 AC_MSG_ERROR([
  72 *** LIBRARY_PATH shouldn't contain the current directory when
  73 *** building gcc. Please change the environment variable
  74 *** and run configure again.])
  75 fi
  76
  77 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
  78 # since this would lead to problems installing/building glibc.
  79 # GCC_EXEC_PREFIX contains the current directory if one of the following
  80 # is true:
  81 # - one of the terminals (":" and ";") is the first or last sign
  82 # - two terminals occur directly after each other
  83 # - the path contains an element with a dot in it
  84 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
  85 changequote(,)dnl
  86 case ${GCC_EXEC_PREFIX} in
  87   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  88     gcc_exec_prefix_setting="contains current directory"
  89     ;;
  90   *)
  91     gcc_exec_prefix_setting="ok"
  92     ;;
  93 esac
  94 changequote([,])dnl
  95 AC_MSG_RESULT($gcc_exec_prefix_setting)
  96 if test "$gcc_exec_prefix_setting" != "ok"; then
  97 AC_MSG_ERROR([
  98 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
  99 *** building gcc. Please change the environment variable
 100 *** and run configure again.])
 101 fi
 102
 103 # -----------
 104 # Directories
 105 # -----------
 106
 107 # Specify the local prefix
 108 local_prefix=
 109 AC_ARG_WITH(local-prefix,
 110 [  --with-local-prefix=DIR specifies directory to put local include],
 111 [case "${withval}" in
 112 yes)    AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
 113 no)     ;;
 114 *)      local_prefix=$with_local_prefix ;;
 115 esac])
 116
 117 # Default local prefix if it is empty
 118 if test x$local_prefix = x; then
 119         local_prefix=/usr/local
 120 fi
 121
 122 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
 123 # passed in by the toplevel make and thus we'd get different behavior
 124 # depending on where we built the sources.
 125 gcc_gxx_include_dir=
 126 # Specify the g++ header file directory
 127 AC_ARG_WITH(gxx-include-dir,
 128 [  --with-gxx-include-dir=DIR
 129                           specifies directory to put g++ header files],
 130 [case "${withval}" in
 131 yes)    AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
 132 no)     ;;
 133 *)      gcc_gxx_include_dir=$with_gxx_include_dir ;;
 134 esac])
 135
 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='${libsubdir}/include/c++'
 139   else
 140     topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
 141 changequote(<<, >>)dnl
 142     gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
 143 changequote([, ])dnl
 144   fi
 145 fi
 146
 147 AC_ARG_WITH(cpp_install_dir,
 148 [  --with-cpp-install-dir=DIR
 149                           install the user visible C preprocessor in DIR
 150                           (relative to PREFIX) as well as PREFIX/bin],
 151 [if test x$withval = xyes; then
 152   AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
 153 elif test x$withval != xno; then
 154   cpp_install_dir=$withval
 155 fi])
 156
 157 # -------------------
 158 # Find default linker
 159 # -------------------
 160
 161 # With GNU ld
 162 AC_ARG_WITH(gnu-ld,
 163 [  --with-gnu-ld           arrange to work with GNU ld.],
 164 gnu_ld_flag="$with_gnu_ld",
 165 gnu_ld_flag=no)
 166
 167 # With pre-defined ld
 168 AC_ARG_WITH(ld,
 169 [  --with-ld               arrange to use the specified ld (full pathname)],
 170 DEFAULT_LINKER="$with_ld")
 171 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 172   if test ! -x "$DEFAULT_LINKER"; then
 173     AC_MSG_WARN([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
 174   elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 175     gnu_ld_flag=yes
 176   fi
 177   AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
 178         [Define to enable the use of a default linker.])
 179 fi
 180
 181 AC_MSG_CHECKING([whether a default linker was specified])
 182 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 183   if test x"$gnu_ld_flag" = x"no"; then
 184     AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
 185   else
 186     AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
 187   fi
 188 else
 189   AC_MSG_RESULT(no)
 190 fi
 191
 192 # ----------------------
 193 # Find default assembler
 194 # ----------------------
 195
 196 # With GNU as
 197 AC_ARG_WITH(gnu-as,
 198 [  --with-gnu-as           arrange to work with GNU as],
 199 gas_flag="$with_gnu_as",
 200 gas_flag=no)
 201
 202 AC_ARG_WITH(as,
 203 [  --with-as               arrange to use the specified as (full pathname)],
 204 DEFAULT_ASSEMBLER="$with_as")
 205 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 206   if test ! -x "$DEFAULT_ASSEMBLER"; then
 207     AC_MSG_WARN([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
 208   elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 209     gas_flag=yes
 210   fi
 211   AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
 212         [Define to enable the use of a default assembler.])
 213 fi
 214
 215 AC_MSG_CHECKING([whether a default assembler was specified])
 216 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 217   if test x"$gas_flag" = x"no"; then
 218     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
 219   else
 220     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
 221   fi
 222 else
 223   AC_MSG_RESULT(no)
 224 fi
 225
 226 # ---------------
 227 # Find C compiler
 228 # ---------------
 229
 230 # Find the native compiler
 231 AC_PROG_CC
 232 AC_PROG_CC_C_O
 233 # autoconf is lame and doesn't give us any substitution variable for this.
 234 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 235   NO_MINUS_C_MINUS_O=yes
 236 else
 237   OUTPUT_OPTION='-o $@'
 238 fi
 239 AC_SUBST(NO_MINUS_C_MINUS_O)
 240 AC_SUBST(OUTPUT_OPTION)
 241
 242 # -------------------------
 243 # Check C compiler features
 244 # -------------------------
 245
 246 AC_CACHE_CHECK(whether ${CC-cc} accepts -Wno-long-long,
 247 ac_cv_prog_cc_no_long_long,
 248 [save_CFLAGS="$CFLAGS"
 249 CFLAGS="-Wno-long-long"
 250 AC_TRY_COMPILE(,,ac_cv_prog_cc_no_long_long=yes,
 251                ac_cv_prog_cc_no_long_long=no)
 252 CFLAGS="$save_CFLAGS"])
 253
 254 AC_PROG_CPP
 255 AC_C_INLINE
 256 gcc_AC_C_VOLATILE
 257
 258 gcc_AC_C_LONG_DOUBLE
 259 gcc_AC_C_LONG_LONG
 260 gcc_AC_C__BOOL
 261
 262 # sizeof(char) is 1 by definition.
 263 AC_COMPILE_CHECK_SIZEOF(short)
 264 AC_COMPILE_CHECK_SIZEOF(int)
 265 AC_COMPILE_CHECK_SIZEOF(long)
 266 if test $ac_cv_c_long_long = yes; then
 267   AC_COMPILE_CHECK_SIZEOF(long long)
 268 fi
 269 if test $ac_cv_c___int64 = yes; then
 270   AC_COMPILE_CHECK_SIZEOF(__int64)
 271 fi
 272
 273 gcc_AC_C_CHARSET
 274
 275 # -----------------
 276 # Find Ada compiler
 277 # -----------------
 278
 279 # See if GNAT has been installed
 280 gcc_AC_PROG_GNAT
 281
 282 if test x$have_gnat != xno ; then
 283 AC_CACHE_CHECK(whether ${ADAC} accepts -Wno-long-long,
 284 ac_cv_prog_adac_no_long_long,
 285 [cat >conftest.adb <<EOF
 286 procedure conftest is begin null; end conftest;
 287 EOF
 288 if $ADAC -Wno-long-long -c conftest.adb 1>&5 2>&5 ; then
 289   ac_cv_prog_adac_no_long_long=yes
 290 else
 291   ac_cv_prog_adac_no_long_long=no
 292 fi
 293 rm -f conftest*])
 294 else
 295   ac_cv_prog_adac_no_long_long=yes
 296 fi
 297
 298 # ---------------------
 299 # Warnings and checking
 300 # ---------------------
 301
 302 strict1_warn=
 303 if test $ac_cv_prog_cc_no_long_long = yes && \
 304     test $ac_cv_prog_adac_no_long_long = yes ; then
 305   strict1_warn="-pedantic -Wno-long-long"
 306 fi
 307 AC_SUBST(strict1_warn)
 308
 309 # If the native compiler is GCC, we can enable warnings even in stage1.
 310 # That's useful for people building cross-compilers, or just running a
 311 # quick `make'.
 312 warn_cflags=
 313 if test "x$GCC" = "xyes"; then
 314   warn_cflags='$(GCC_WARN_CFLAGS)'
 315 fi
 316 AC_SUBST(warn_cflags)
 317
 318 # Enable -Werror in bootstrap stage2 and later.
 319 # Change the default to "no" on release branches.
 320 AC_ARG_ENABLE(werror,
 321 [  --enable-werror         enable -Werror in bootstrap stage2 and later], [],
 322 [enable_werror=yes])
 323 if test x$enable_werror = xyes ; then
 324   WERROR=-Werror
 325 fi
 326 AC_SUBST(WERROR)
 327
 328 # Enable expensive internal checks
 329 AC_ARG_ENABLE(checking,
 330 [  --enable-checking[=LIST]
 331                           enable expensive run-time checks.  With LIST,
 332                           enable only specific categories of checks.
 333                           Categories are: misc,tree,rtl,rtlflag,gc,gcac;
 334                           default is misc,tree,gc,rtlflag],
 335 [ac_checking=
 336 ac_tree_checking=
 337 ac_rtl_checking=
 338 ac_rtlflag_checking=
 339 ac_gc_checking=
 340 ac_gc_always_collect=
 341 case "${enableval}" in
 342 yes)    ac_checking=1 ; ac_tree_checking=1 ; ac_gc_checking=1 ;
 343         ac_rtlflag_checking=1 ;;
 344 no)     ;;
 345 *)      IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 346         set fnord $enableval; shift
 347         IFS="$ac_save_IFS"
 348         for check
 349         do
 350                 case $check in
 351                 misc)   ac_checking=1 ;;
 352                 tree)   ac_tree_checking=1 ;;
 353                 rtlflag)        ac_rtlflag_checking=1 ;;
 354                 rtl)    ac_rtl_checking=1 ;;
 355                 gc)     ac_gc_checking=1 ;;
 356                 gcac)   ac_gc_always_collect=1 ;;
 357                 valgrind)       ac_checking_valgrind=1 ;;
 358                 *)      AC_MSG_ERROR(unknown check category $check) ;;
 359                 esac
 360         done
 361         ;;
 362 esac
 363 ],
 364 # Enable some checks by default for development versions of GCC
 365 [ac_checking=1; ac_tree_checking=1; ac_gc_checking=1; ac_rtlflag_checking=1;])
 366 nocommon_flag=""
 367 if test x$ac_checking != x ; then
 368   AC_DEFINE(ENABLE_CHECKING, 1,
 369 [Define if you want more run-time sanity checks.  This one gets a grab
 370    bag of miscellaneous but relatively cheap checks.])
 371   nocommon_flag=-fno-common
 372 fi
 373 AC_SUBST(nocommon_flag)
 374 if test x$ac_tree_checking != x ; then
 375   AC_DEFINE(ENABLE_TREE_CHECKING, 1,
 376 [Define if you want all operations on trees (the basic data
 377    structure of the front ends) to be checked for dynamic type safety
 378    at runtime.  This is moderately expensive.])
 379 fi
 380 if test x$ac_rtl_checking != x ; then
 381   AC_DEFINE(ENABLE_RTL_CHECKING, 1,
 382 [Define if you want all operations on RTL (the basic data structure
 383    of the optimizer and back end) to be checked for dynamic type safety
 384    at runtime.  This is quite expensive.])
 385 fi
 386 if test x$ac_rtlflag_checking != x ; then
 387   AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
 388 [Define if you want RTL flag accesses to be checked against the RTL
 389    codes that are supported for each access macro.  This is relatively
 390    cheap.])
 391 fi
 392 if test x$ac_gc_checking != x ; then
 393   AC_DEFINE(ENABLE_GC_CHECKING, 1,
 394 [Define if you want the garbage collector to do object poisoning and
 395    other memory allocation checks.  This is quite expensive.])
 396 fi
 397 if test x$ac_gc_always_collect != x ; then
 398   AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
 399 [Define if you want the garbage collector to operate in maximally
 400    paranoid mode, validating the entire heap and collecting garbage at
 401    every opportunity.  This is extremely expensive.])
 402 fi
 403 valgrind_path_defines=
 404 valgrind_command=
 405 if test x$ac_checking_valgrind != x ; then
 406   # It is certainly possible that there's valgrind but no valgrind.h.
 407   # GCC relies on making annotations so we must have both.
 408   AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
 409   AC_TRY_CPP(
 410     [#include <memcheck.h>
 411 #ifndef VALGRIND_DISCARD
 412 #error VALGRIND_DISCARD not defined
 413 #endif],
 414   [gcc_cv_header_memcheck_h=yes],
 415   gcc_cv_header_memcheck_h=no)
 416   AC_MSG_RESULT($gcc_cv_header_memcheck_h)
 417   AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
 418   AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
 419         [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
 420   if test "x$valgrind_path" = "x" || (test $have_valgrind_h = no && test $gcc_cv_header_memcheck_h = no); then
 421         AC_MSG_ERROR([*** Can't find both valgrind and valgrind.h/memcheck.h])
 422   fi
 423   valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
 424   valgrind_command="$valgrind_path -q"
 425   AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
 426 [Define if you want to run subprograms and generated programs
 427    through valgrind (a memory checker).  This is extremely expensive.])
 428   if test $gcc_cv_header_memcheck_h = yes; then
 429     AC_DEFINE(HAVE_MEMCHECK_H, 1,
 430         [Define if valgrind's memcheck.h header is installed.])
 431   fi
 432 fi
 433 AC_SUBST(valgrind_path_defines)
 434 AC_SUBST(valgrind_command)
 435
 436 # Enable code coverage collection
 437 AC_ARG_ENABLE(coverage,
 438 [  --enable-coverage[=LEVEL]
 439                           enable compiler\'s code coverage collection.
 440                           Use to measure compiler performance and locate
 441                           unused parts of the compiler. With LEVEL, specify
 442                           optimization. Values are opt, noopt,
 443                           default is noopt],
 444 [case "${enableval}" in
 445 yes|noopt)
 446         coverage_flags="-fprofile-arcs -ftest-coverage -O0 -DSELF_COVERAGE=1"
 447         ;;
 448 opt)
 449         coverage_flags="-fprofile-arcs -ftest-coverage -O2 -DSELF_COVERAGE=2"
 450         ;;
 451 *)
 452         AC_MSG_ERROR(unknown coverage setting $enableval)
 453         ;;
 454 esac],
 455 [coverage_flags=""])
 456 AC_SUBST(coverage_flags)
 457
 458 # -------------------------------
 459 # Miscenalleous configure options
 460 # -------------------------------
 461
 462 # With stabs
 463 AC_ARG_WITH(stabs,
 464 [  --with-stabs            arrange to use stabs instead of host debug format],
 465 stabs="$with_stabs",
 466 stabs=no)
 467
 468 # With ELF
 469 AC_ARG_WITH(elf,
 470 [  --with-elf              arrange to use ELF instead of host debug format],
 471 elf="$with_elf",
 472 elf=no)
 473
 474 # Determine whether or not multilibs are enabled.
 475 AC_ARG_ENABLE(multilib,
 476 [  --enable-multilib       enable library support for multiple ABIs],
 477 [], [enable_multilib=yes])
 478 AC_SUBST(enable_multilib)
 479
 480 # Enable __cxa_atexit for C++.
 481 AC_ARG_ENABLE(__cxa_atexit,
 482 [  --enable-__cxa_atexit   enable __cxa_atexit for C++],
 483 [], [])
 484
 485 # Enable Multibyte Characters for C/C++
 486 AC_ARG_ENABLE(c-mbchar,
 487 [  --enable-c-mbchar       enable multibyte characters for C and C++],
 488 if test x$enable_c_mbchar != xno; then
 489   AC_DEFINE(MULTIBYTE_CHARS, 1,
 490   [Define if you want the C and C++ compilers to support multibyte
 491    character sets for source code.])
 492 fi)
 493
 494 # Enable threads
 495 # Pass with no value to take the default
 496 # Pass with a value to specify a thread package
 497 AC_ARG_ENABLE(threads,
 498 [  --enable-threads        enable thread usage for target GCC
 499   --enable-threads=LIB    use LIB thread package for target GCC],,
 500 enable_threads='')
 501
 502 enable_threads_flag=$enable_threads
 503 # Check if a valid thread package
 504 case x${enable_threads_flag} in
 505         x | xno)
 506                 # No threads
 507                 target_thread_file='single'
 508                 ;;
 509         xyes)
 510                 # default
 511                 target_thread_file=''
 512                 ;;
 513         xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
 514         xsolaris | xwin32 | xdce | xrtems| xvxworks | xaix | xgnat)
 515                 target_thread_file=$enable_threads_flag
 516                 ;;
 517         *)
 518                 echo "$enable_threads is an unknown thread package" 1>&2
 519                 exit 1
 520                 ;;
 521 esac
 522
 523 AC_ARG_ENABLE(objc-gc,
 524 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
 525                           the GNU Objective-C runtime],
 526 if test x$enable_objc_gc = xno; then
 527         objc_boehm_gc=''
 528 else
 529         objc_boehm_gc=1
 530 fi,
 531 objc_boehm_gc='')
 532
 533 AC_ARG_WITH(dwarf2,
 534 [  --with-dwarf2           force the default debug format to be DWARF 2],
 535 dwarf2="$with_dwarf2",
 536 dwarf2=no)
 537
 538 AC_ARG_ENABLE(shared,
 539 [  --disable-shared        don't provide a shared libgcc],
 540 [
 541   case $enable_shared in
 542   yes | no) ;;
 543   *)
 544     enable_shared=no
 545     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 546     for pkg in $enableval; do
 547       if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
 548         enable_shared=yes
 549       fi
 550     done
 551     IFS="$ac_save_ifs"
 552     ;;
 553   esac
 554 ], [enable_shared=yes])
 555 AC_SUBST(enable_shared)
 556
 557 AC_ARG_WITH(sysroot,
 558 [  --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
 559 [
 560  case ${with_sysroot} in
 561  yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_alias}/sys-root' ;;
 562  *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
 563  esac
 564
 565  TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
 566  CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
 567
 568  if test "x$exec_prefix" = xNONE; then
 569   if test "x$prefix" = xNONE; then
 570    test_prefix=/usr/local
 571   else
 572    test_prefix=$prefix
 573   fi
 574  else
 575   test_prefix=$exec_prefix
 576  fi
 577  case ${TARGET_SYSTEM_ROOT} in
 578  "${test_prefix}"|"${test_prefix}/"*|\
 579  '${exec_prefix}'|'${exec_prefix}/'*)
 580    t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
 581    TARGET_SYSTEM_ROOT_DEFINE="$t"
 582    ;;
 583  esac
 584 ], [
 585  TARGET_SYSTEM_ROOT=
 586  TARGET_SYSTEM_ROOT_DEFINE=
 587  CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
 588 ])
 589 AC_SUBST(TARGET_SYSTEM_ROOT)
 590 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
 591 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
 592
 593 # -------------------------
 594 # Checks for other programs
 595 # -------------------------
 596
 597 AC_PROG_MAKE_SET
 598
 599 # Find some useful tools
 600 AC_PROG_AWK
 601 gcc_AC_PROG_LN
 602 gcc_AC_PROG_LN_S
 603 AC_PROG_RANLIB
 604 gcc_AC_PROG_INSTALL
 605
 606 # See if we have the mktemp command.
 607 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 608
 609 # Do we have a single-tree copy of texinfo?
 610 if test -f $srcdir/../texinfo/Makefile.in; then
 611   MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
 612   gcc_cv_prog_makeinfo_modern=yes
 613   AC_MSG_RESULT([Using makeinfo from the unified source tree.])
 614 else
 615   # See if makeinfo has been installed and is modern enough
 616   # that we can use it.
 617   gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 618   [GNU texinfo.* \([0-9][0-9.]*\)],
 619   [4.[2-9]*])
 620 fi
 621
 622 if test $gcc_cv_prog_makeinfo_modern = no; then
 623   AC_MSG_WARN([
 624 *** Makeinfo is missing or too old.
 625 *** Info documentation will not be built.])
 626   BUILD_INFO=
 627 else
 628   BUILD_INFO=info               AC_SUBST(BUILD_INFO)
 629 fi
 630
 631 # Is pod2man recent enough to regenerate manpages?
 632 AC_MSG_CHECKING([for recent Pod::Man])
 633 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
 634   AC_MSG_RESULT(yes)
 635   GENERATED_MANPAGES=generated-manpages         AC_SUBST(GENERATED_MANPAGES)
 636 else
 637   AC_MSG_RESULT(no)
 638   GENERATED_MANPAGES=
 639 fi
 640
 641 # 'make compare' can be significantly faster, if cmp itself can
 642 # skip bytes instead of using tail.  The test being performed is
 643 # "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2"
 644 # but we need to sink errors and handle broken shells.
 645 AC_MSG_CHECKING([for cmp's capabilities])
 646 echo abfoo >t1
 647 echo cdfoo >t2
 648 if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then
 649   if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then
 650     make_compare_target=slowcompare
 651   else
 652     make_compare_target=gnucompare
 653   fi
 654 else
 655   make_compare_target=slowcompare
 656 fi
 657 rm t1 t2
 658 AC_SUBST(make_compare_target)
 659 AC_MSG_RESULT($make_compare_target)
 660
 661 # How about lex?
 662 dnl Don't use AC_PROG_LEX; we insist on flex.
 663 dnl LEXLIB is not useful in gcc.
 664 if test -f $srcdir/../flex/skel.c; then
 665   FLEX='$(objdir)/../flex/flex'
 666 else
 667   AC_CHECK_PROG(FLEX, flex, flex, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing flex)
 668 fi
 669
 670 # Bison?
 671 # The -L switch is so bison can find its skeleton file.
 672 if test -f $srcdir/../bison/bison.simple; then
 673   BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
 674 else
 675   AC_CHECK_PROG(BISON, bison, bison, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing bison)
 676 fi
 677
 678 # --------------------
 679 # Checks for C headers
 680 # --------------------
 681
 682 AC_MSG_CHECKING(for GNU C library)
 683 AC_CACHE_VAL(gcc_cv_glibc,
 684 [AC_TRY_COMPILE(
 685   [#include <features.h>],[
 686 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
 687 #error Not a GNU C library system
 688 #endif],
 689   [gcc_cv_glibc=yes],
 690   gcc_cv_glibc=no)])
 691 AC_MSG_RESULT($gcc_cv_glibc)
 692 if test $gcc_cv_glibc = yes; then
 693   AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
 694 fi
 695
 696 AC_HEADER_STDC
 697 AC_HEADER_TIME
 698 gcc_AC_HEADER_STDBOOL
 699 gcc_AC_HEADER_STRING
 700 AC_HEADER_SYS_WAIT
 701 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
 702                  fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
 703                  sys/resource.h sys/param.h sys/times.h sys/stat.h \
 704                  direct.h malloc.h langinfo.h ldfcn.h wchar.h)
 705
 706 # Check for thread headers.
 707 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
 708 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
 709
 710 # These tests can't be done till we know if we have limits.h.
 711 gcc_AC_C_CHAR_BIT
 712 AC_C_BIGENDIAN_CROSS
 713
 714 # --------
 715 # UNSORTED
 716 # --------
 717
 718 # Stage specific cflags for build.
 719 stage1_cflags=
 720 case $build in
 721 vax-*-*)
 722   if test x$GCC = xyes
 723   then
 724     stage1_cflags="-Wa,-J"
 725   else
 726     stage1_cflags="-J"
 727   fi
 728   ;;
 729 powerpc-*-darwin*)
 730   # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
 731   # sources; use -no-cpp-precomp to get to GNU cpp.
 732   # Apple's GCC has bugs in designated initializer handling, so disable
 733   # that too.
 734   stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
 735   ;;
 736 esac
 737 AC_SUBST(stage1_cflags)
 738
 739 # These libraries may be used by collect2.
 740 # We may need a special search path to get them linked.
 741 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
 742 [save_LIBS="$LIBS"
 743 for libs in '' -lld -lmld \
 744                 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
 745                 '-L/usr/lib/cmplrs/cc3.11 -lmld'
 746 do
 747         LIBS="$libs"
 748         AC_TRY_LINK_FUNC(ldopen,
 749                 [gcc_cv_collect2_libs="$libs"; break])
 750 done
 751 LIBS="$save_LIBS"
 752 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
 753 case $gcc_cv_collect2_libs in
 754         "none required")        ;;
 755         *)      COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
 756 esac
 757 AC_SUBST(COLLECT2_LIBS)
 758
 759 # When building Ada code on Alpha, we need exc_resume which is usually in
 760 # -lexc.  So test for it.
 761 save_LIBS="$LIBS"
 762 LIBS=
 763 AC_SEARCH_LIBS(exc_resume, exc)
 764 GNAT_LIBEXC="$LIBS"
 765 LIBS="$save_LIBS"
 766 AC_SUBST(GNAT_LIBEXC)
 767
 768 # Some systems put ldexp and frexp in libm instead of libc; assume
 769 # they're both in the same place.  jcf-dump needs them.
 770 save_LIBS="$LIBS"
 771 LIBS=
 772 AC_SEARCH_LIBS(ldexp, m)
 773 LDEXP_LIB="$LIBS"
 774 LIBS="$save_LIBS"
 775 AC_SUBST(LDEXP_LIB)
 776
 777 # See if the stage1 system preprocessor understands the ANSI C
 778 # preprocessor stringification operator.  (Used by symcat.h.)
 779 AC_C_STRINGIZE
 780
 781 # Use <inttypes.h> only if it exists,
 782 # doesn't clash with <sys/types.h>, and declares intmax_t.
 783 AC_MSG_CHECKING(for inttypes.h)
 784 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
 785 [AC_TRY_COMPILE(
 786   [#include <sys/types.h>
 787 #include <inttypes.h>],
 788   [intmax_t i = -1;],
 789   [gcc_cv_header_inttypes_h=yes],
 790   gcc_cv_header_inttypes_h=no)])
 791 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
 792 if test $gcc_cv_header_inttypes_h = yes; then
 793   AC_DEFINE(HAVE_INTTYPES_H, 1,
 794         [Define if you have a working <inttypes.h> header file.])
 795 fi
 796
 797 dnl Disabled until we have a complete test for buggy enum bitfields.
 798 dnl gcc_AC_C_ENUM_BF_UNSIGNED
 799
 800 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
 801         sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
 802         fwrite_unlocked fprintf_unlocked getrusage nl_langinfo lstat \
 803         scandir alphasort gettimeofday mbstowcs wcswidth mmap)
 804
 805 if test x$ac_cv_func_mbstowcs = xyes; then
 806   AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
 807 [    AC_TRY_RUN([#include <stdlib.h>
 808 int main()
 809 {
 810   mbstowcs(0, "", 0);
 811   return 0;
 812 }],
 813     gcc_cv_func_mbstowcs_works=yes,
 814     gcc_cv_func_mbstowcs_works=no,
 815     gcc_cv_func_mbstowcs_works=yes)])
 816   if test x$gcc_cv_func_mbstowcs_works = xyes; then
 817     AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
 818   [Define this macro if mbstowcs does not crash when its
 819    first argument is NULL.])
 820   fi
 821 fi
 822
 823 AC_CHECK_TYPE(ssize_t, int)
 824
 825 # Try to determine the array type of the second argument of getgroups
 826 # for the target system (int or gid_t).
 827 AC_TYPE_GETGROUPS
 828 if test "${target}" = "${build}"; then
 829   TARGET_GETGROUPS_T=$ac_cv_type_getgroups
 830 else
 831   case "${target}" in
 832         # This condition may need some tweaking.  It should include all
 833         # targets where the array type of the second argument of getgroups
 834         # is int and the type of gid_t is not equivalent to int.
 835         *-*-sunos* | *-*-ultrix*)
 836                 TARGET_GETGROUPS_T=int
 837                 ;;
 838         *)
 839                 TARGET_GETGROUPS_T=gid_t
 840                 ;;
 841   esac
 842 fi
 843 AC_SUBST(TARGET_GETGROUPS_T)
 844
 845 gcc_AC_FUNC_PRINTF_PTR
 846 gcc_AC_FUNC_MMAP_BLACKLIST
 847
 848 case "${host}" in
 849 *-*-uwin*)
 850   AC_MSG_ERROR([
 851 *** UWIN may not be used as a host platform because
 852 *** linking with posix.dll is not allowed by the GNU GPL])
 853   ;;
 854 *-*-*vms*)
 855   # Under VMS, vfork works very different than on Unix. The standard test
 856   # won't work, and it isn't easily adaptable. It makes more sense to
 857   # just force it.
 858   ac_cv_func_vfork_works=yes
 859   ;;
 860 esac
 861 AC_FUNC_VFORK
 862
 863 AM_ICONV
 864
 865 # We will need to find libiberty.h and ansidecl.h
 866 saved_CFLAGS="$CFLAGS"
 867 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
 868 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
 869         strsignal putc_unlocked fputs_unlocked fwrite_unlocked \
 870         fprintf_unlocked strstr errno vasprintf \
 871         malloc realloc calloc free basename getopt clock, , ,[
 872 #include "ansidecl.h"
 873 #include "system.h"])
 874
 875 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
 876 #include "ansidecl.h"
 877 #include "system.h"
 878 #ifdef HAVE_SYS_RESOURCE_H
 879 #include <sys/resource.h>
 880 #endif
 881 ])
 882
 883 AC_TRY_COMPILE([
 884 #include "ansidecl.h"
 885 #include "system.h"
 886 #ifdef HAVE_SYS_RESOURCE_H
 887 #include <sys/resource.h>
 888 #endif
 889 ],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long],
 890 [Define to \`long' if <sys/resource.h> doesn't define.])])
 891
 892 gcc_AC_CHECK_DECLS(ldgetname, , ,[
 893 #include "ansidecl.h"
 894 #include "system.h"
 895 #ifdef HAVE_LDFCN_H
 896 #include <ldfcn.h>
 897 #endif
 898 ])
 899
 900 gcc_AC_CHECK_DECLS(times, , ,[
 901 #include "ansidecl.h"
 902 #include "system.h"
 903 #ifdef HAVE_SYS_TIMES_H
 904 #include <sys/times.h>
 905 #endif
 906 ])
 907
 908 # More time-related stuff.
 909 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
 910 AC_TRY_COMPILE([
 911 #include "ansidecl.h"
 912 #include "system.h"
 913 #ifdef HAVE_SYS_TIMES_H
 914 #include <sys/times.h>
 915 #endif
 916 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
 917 if test $ac_cv_struct_tms = yes; then
 918   AC_DEFINE(HAVE_STRUCT_TMS, 1,
 919   [Define if <sys/times.h> defines struct tms.])
 920 fi
 921
 922 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
 923 # revisit after autoconf 2.50.
 924 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
 925 AC_TRY_COMPILE([
 926 #include "ansidecl.h"
 927 #include "system.h"
 928 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
 929 if test $gcc_cv_type_clock_t = yes; then
 930   AC_DEFINE(HAVE_CLOCK_T, 1,
 931   [Define if <time.h> defines clock_t.])
 932 fi
 933
 934 AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar,
 935 [AC_TRY_COMPILE([
 936 #include "ansidecl.h"
 937 #include "system.h"
 938 ],
 939 [if ((uchar *)0) return 0;
 940  if (sizeof(uchar)) return 0;],
 941 ac_cv_type_uchar=yes, ac_cv_type_uchar=no)])
 942 if test $ac_cv_type_uchar = yes; then
 943   AC_DEFINE(HAVE_UCHAR, 1,
 944   [Define if <sys/types.h> defines \`uchar'.])
 945 fi
 946
 947 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
 948 CFLAGS="$saved_CFLAGS"
 949
 950 gcc_AC_INITFINI_ARRAY
 951
 952 # mkdir takes a single argument on some systems.
 953 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
 954
 955 # File extensions
 956 manext='.1'
 957 objext='.o'
 958 AC_SUBST(manext)
 959 AC_SUBST(objext)
 960
 961 # With Setjmp/Longjmp based exception handling.
 962 AC_ARG_ENABLE(sjlj-exceptions,
 963 [  --enable-sjlj-exceptions
 964                           arrange to use setjmp/longjmp exception handling],
 965 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
 966 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
 967   [Define 0/1 to force the choice for exception handling model.])])
 968
 969 AC_CHECK_LIB(unwind, main, use_libunwind_default=yes, use_libunwind_default=no)
 970 # Use libunwind based exception handling.
 971 AC_ARG_ENABLE(libunwind-exceptions,
 972 [  --enable-libunwind-exceptions  force use libunwind for exceptions],
 973 use_libunwind_exceptions=$enableval,
 974 use_libunwind_exceptions=$use_libunwind_default)
 975 if test x"$use_libunwind_exceptions" = xyes; then
 976    AC_DEFINE(USE_LIBUNWIND_EXCEPTIONS, 1,
 977         [Define if gcc should use -lunwind.])
 978 fi
 979
 980 # --------------------------------------------------------
 981 # Build, host, and target specific configuration fragments
 982 # --------------------------------------------------------
 983
 984 target_gtfiles=
 985 build_xm_file=
 986 build_xm_defines=
 987 build_install_headers_dir=install-headers-tar
 988 build_exeext=
 989 host_xm_file=
 990 host_xm_defines=
 991 host_xmake_file=
 992 host_truncate_target=
 993 host_exeext=
 994
 995 # Decode the host machine, then the target machine.
 996 # For the host machine, we save the xm_file variable as host_xm_file;
 997 # then we decode the target machine and forget everything else
 998 # that came from the host machine.
 999 for machine in $build $host $target; do
1000         . ${srcdir}/config.gcc
1001 done
1002
1003 extra_objs="${host_extra_objs} ${extra_objs}"
1004
1005 # Default the target-machine variables that were not explicitly set.
1006 if test x"$tm_file" = x
1007 then tm_file=$cpu_type/$cpu_type.h; fi
1008
1009 if test x"$extra_headers" = x
1010 then extra_headers=; fi
1011
1012 if test x$md_file = x
1013 then md_file=$cpu_type/$cpu_type.md; fi
1014
1015 if test x$out_file = x
1016 then out_file=$cpu_type/$cpu_type.c; fi
1017
1018 if test x"$tmake_file" = x
1019 then tmake_file=$cpu_type/t-$cpu_type
1020 fi
1021
1022 if test x"$dwarf2" = xyes
1023 then tm_file="$tm_file tm-dwarf2.h"
1024 fi
1025
1026 # Say what files are being used for the output code and MD file.
1027 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1028 echo "Using \`$srcdir/config/$md_file' as machine description file."
1029
1030 # If any of the xm_file variables contain nonexistent files, warn
1031 # about them and drop them.
1032
1033 bx=
1034 for x in $build_xm_file; do
1035   if    test -f $srcdir/config/$x
1036   then      bx="$bx $x"
1037   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1038   fi
1039 done
1040 build_xm_file="$bx"
1041
1042 hx=
1043 for x in $host_xm_file; do
1044   if    test -f $srcdir/config/$x
1045   then      hx="$hx $x"
1046   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1047   fi
1048 done
1049 host_xm_file="$hx"
1050
1051 tx=
1052 for x in $xm_file; do
1053   if    test -f $srcdir/config/$x
1054   then      tx="$tx $x"
1055   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1056   fi
1057 done
1058 xm_file="$tx"
1059
1060 count=a
1061 for f in $tm_file; do
1062         count=${count}x
1063 done
1064 if test $count = ax; then
1065         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1066 else
1067         echo "Using the following target machine macro files:"
1068         for f in $tm_file; do
1069                 echo "  $srcdir/config/$f"
1070         done
1071 fi
1072
1073 if test x$need_64bit_hwint = xyes; then
1074         AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1075 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1076 fi
1077
1078 count=a
1079 for f in $host_xm_file; do
1080         count=${count}x
1081 done
1082 if test $count = a; then
1083         :
1084 elif test $count = ax; then
1085         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1086 else
1087         echo "Using the following host machine macro files:"
1088         for f in $host_xm_file; do
1089                 echo "  $srcdir/config/$f"
1090         done
1091 fi
1092 echo "Using ${out_host_hook_obj} for host machine hooks."
1093
1094 if test "$host_xm_file" != "$build_xm_file"; then
1095         count=a
1096         for f in $build_xm_file; do
1097                 count=${count}x
1098         done
1099         if test $count = a; then
1100                 :
1101         elif test $count = ax; then
1102                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1103         else
1104                 echo "Using the following build machine macro files:"
1105                 for f in $build_xm_file; do
1106                         echo "  $srcdir/config/$f"
1107                 done
1108         fi
1109 fi
1110
1111 if test x$thread_file = x; then
1112         if test x$target_thread_file != x; then
1113                 thread_file=$target_thread_file
1114         else
1115                 thread_file='single'
1116         fi
1117 fi
1118
1119 if test x$enable___cxa_atexit = xyes || \
1120    test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1121   AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1122   [Define if you want to use __cxa_atexit, rather than atexit, to
1123    register C++ destructors for local statics and global objects.
1124    This is essential for fully standards-compliant handling of
1125    destructors, but requires __cxa_atexit in libc.])
1126 fi
1127
1128 # Look for a file containing extra machine modes.
1129 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1130   extra_modes_file='$(srcdir)'/config/${extra_modes}
1131   AC_SUBST(extra_modes_file)
1132   AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "$extra_modes",
1133   [Define to the name of a file containing a list of extra machine modes
1134    for this architecture.])
1135   AC_DEFINE(EXTRA_CC_MODES, 1,
1136   [Define if the target architecture needs extra machine modes to represent
1137    the results of comparisons.])
1138 fi
1139
1140 # auto-host.h is the file containing items generated by autoconf and is
1141 # the first file included by config.h.
1142 # If host=build, it is correct to have bconfig include auto-host.h
1143 # as well.  If host!=build, we are in error and need to do more
1144 # work to find out the build config parameters.
1145 if test x$host = x$build
1146 then
1147         build_auto=auto-host.h
1148         FORBUILD=..
1149 else
1150         # We create a subdir, then run autoconf in the subdir.
1151         # To prevent recursion we set host and build for the new
1152         # invocation of configure to the build for this invocation
1153         # of configure.
1154         tempdir=build.$$
1155         rm -rf $tempdir
1156         mkdir $tempdir
1157         cd $tempdir
1158         case ${srcdir} in
1159         /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1160         *) realsrcdir=../${srcdir};;
1161         esac
1162         saved_CFLAGS="${CFLAGS}"
1163         CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1164         ${realsrcdir}/configure \
1165                 --target=$target_alias --host=$build_alias --build=$build_alias
1166         CFLAGS="${saved_CFLAGS}"
1167
1168         # We just finished tests for the build machine, so rename
1169         # the file auto-build.h in the gcc directory.
1170         mv auto-host.h ../auto-build.h
1171         cd ..
1172         rm -rf $tempdir
1173         build_auto=auto-build.h
1174         FORBUILD=../build-$build_alias
1175 fi
1176 AC_SUBST(FORBUILD)
1177
1178 tm_file="${tm_file} defaults.h"
1179 tm_p_file="${tm_p_file} tm-preds.h"
1180 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1181 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1182 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1183 # put this back in temporarily.
1184 xm_file="ansidecl.h ${xm_file}"
1185
1186 # --------
1187 # UNSORTED
1188 # --------
1189
1190 # Truncate the target if necessary
1191 if test x$host_truncate_target != x; then
1192         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
1193 fi
1194
1195 # Get the version trigger filename from the toplevel
1196 if test "${with_gcc_version_trigger+set}" = set; then
1197         gcc_version_trigger=$with_gcc_version_trigger
1198 else
1199         gcc_version_trigger=${srcdir}/version.c
1200 fi
1201 changequote(,)dnl
1202 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'`
1203 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1204
1205 # Compile in configure arguments.
1206 if test -f configargs.h ; then
1207         # Being re-configured.
1208         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1209         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1210 else
1211         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1212 fi
1213 cat > configargs.h <<EOF
1214 /* Generated automatically. */
1215 static const char configuration_arguments[] = "$gcc_config_arguments";
1216 static const char thread_model[] = "$thread_file";
1217
1218 static const struct {
1219   const char *name, *value;
1220 } configure_default_options[] = $configure_default_options;
1221 EOF
1222 changequote([,])dnl
1223
1224 # Internationalization
1225 PACKAGE=gcc
1226 VERSION="$gcc_version"
1227 AC_SUBST(PACKAGE)
1228 AC_SUBST(VERSION)
1229
1230 # Enable NLS support by default
1231 AC_ARG_ENABLE(nls,
1232   [  --enable-nls            use Native Language Support (default)],
1233   , enable_nls=yes)
1234
1235 # if cross compiling, disable NLS support.
1236 # It's not worth the trouble, at least for now.
1237
1238 if test "${build}" != "${host}" && test "x$enable_nls" = "xyes"; then
1239   AC_MSG_WARN(Disabling NLS support for canadian cross compiler.)
1240   enable_nls=no
1241 fi
1242
1243 AM_GNU_GETTEXT
1244
1245 # Windows32 Registry support for specifying GCC installation paths.
1246 AC_ARG_ENABLE(win32-registry,
1247 [  --disable-win32-registry
1248                           disable lookup of installation paths in the
1249                           Registry on Windows hosts
1250   --enable-win32-registry enable registry lookup (default)
1251   --enable-win32-registry=KEY
1252                           use KEY instead of GCC version as the last portion
1253                           of the registry key],,)
1254 case $host_os in
1255         win32 | pe | cygwin* | mingw32* | uwin*)
1256 AC_MSG_CHECKING(whether windows registry support is requested)
1257 if test "x$enable_win32_registry" != xno; then
1258   AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1259 [Define to 1 if installation paths should be looked up in Windows32
1260    Registry. Ignored on non windows32 hosts.])
1261   AC_MSG_RESULT(yes)
1262   AC_SEARCH_LIBS(RegOpenKeyExA, advapi32)
1263 else
1264   AC_MSG_RESULT(no)
1265 fi
1266
1267 # Check if user specified a different registry key.
1268 case "x${enable_win32_registry}" in
1269 x | xyes)
1270   # default.
1271   gcc_cv_win32_registry_key="$VERSION"
1272   ;;
1273 xno)
1274   # no registry lookup.
1275   gcc_cv_win32_registry_key=''
1276   ;;
1277 *)
1278   # user-specified key.
1279   gcc_cv_win32_registry_key="$enable_win32_registry"
1280   ;;
1281 esac
1282
1283 if test "x$enable_win32_registry" != xno; then
1284   AC_MSG_CHECKING(registry key on windows hosts)
1285   AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
1286         [Define to be the last portion of registry key on windows hosts.])
1287   AC_MSG_RESULT($gcc_cv_win32_registry_key)
1288 fi
1289 ;;
1290 esac
1291
1292 # Get an absolute path to the GCC top-level source directory
1293 holddir=`${PWDCMD-pwd}`
1294 cd $srcdir
1295 topdir=`${PWDCMD-pwd}`
1296 cd $holddir
1297
1298 # Conditionalize the makefile for this host machine.
1299 # Make-host contains the concatenation of all host makefile fragments
1300 # [there can be more than one].  This file is built by configure.frag.
1301 host_overrides=Make-host
1302 dep_host_xmake_file=
1303 for f in .. ${host_xmake_file}
1304 do
1305         if test -f ${srcdir}/config/$f
1306         then
1307                 dep_host_xmake_file="${dep_host_xmake_file} ${srcdir}/config/$f"
1308         fi
1309 done
1310
1311 # Conditionalize the makefile for this target machine.
1312 # Make-target contains the concatenation of all host makefile fragments
1313 # [there can be more than one].  This file is built by configure.frag.
1314 target_overrides=Make-target
1315 dep_tmake_file=
1316 for f in .. ${tmake_file}
1317 do
1318         if test -f ${srcdir}/config/$f
1319         then
1320                 dep_tmake_file="${dep_tmake_file} ${srcdir}/config/$f"
1321         fi
1322 done
1323
1324 symbolic_link='ln -s'
1325
1326 # If the host doesn't support symlinks, modify CC in
1327 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1328 # Otherwise, we can use "CC=$(CC)".
1329 rm -f symtest.tem
1330 if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
1331 then
1332         cc_set_by_configure="\$(CC)"
1333         quoted_cc_set_by_configure="\$(CC)"
1334         stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1335         quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1336 else
1337         rm -f symtest.tem
1338         if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
1339         then
1340                 symbolic_link="cp -p"
1341         else
1342                 symbolic_link="cp"
1343         fi
1344         cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1345         quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1346         stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1347         quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1348 fi
1349 rm -f symtest.tem
1350
1351 out_object_file=`basename $out_file .c`.o
1352
1353 tm_file_list=
1354 for f in $tm_file; do
1355   case $f in
1356     ansidecl.h )
1357        tm_file_list="${tm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1358     defaults.h )
1359        tm_file_list="${tm_file_list} \$(srcdir)/$f" ;;
1360     *) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" ;;
1361   esac
1362 done
1363
1364 tm_p_file_list=
1365 for f in $tm_p_file; do
1366   case $f in
1367     tm-preds.h )
1368        tm_p_file_list="${tm_p_file_list} $f" ;;
1369     *) tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f" ;;
1370   esac
1371 done
1372
1373 host_xm_file_list=
1374 for f in $host_xm_file; do
1375   case $f in
1376     ansidecl.h )
1377        host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1378     auto-host.h )
1379        host_xm_file_list="${host_xm_file_list} $f" ;;
1380     defaults.h )
1381        host_xm_file_list="${host_xm_file_list} \$(srcdir)/$f" ;;
1382     *) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" ;;
1383   esac
1384 done
1385
1386 build_xm_file_list=
1387 for f in $build_xm_file; do
1388   case $f in
1389     ansidecl.h )
1390        build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1391     auto-build.h | auto-host.h )
1392        build_xm_file_list="${build_xm_file_list} $f" ;;
1393     defaults.h )
1394        host_xm_file_list="${host_xm_file_list} \$(srcdir)/$f" ;;
1395     *) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" ;;
1396   esac
1397 done
1398
1399 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1400 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1401 CROSS=                                          AC_SUBST(CROSS)
1402 ALL=all.internal                                AC_SUBST(ALL)
1403 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1404 if test x$host != x$target
1405 then
1406         CROSS="-DCROSS_COMPILE"
1407         ALL=all.cross
1408         SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1409         case "$host","$target" in
1410             i?86-*-*,x86_64-*-* \
1411             | powerpc*-*-*,powerpc64*-*-*)
1412                 CROSS="$CROSS -DNATIVE_CROSS" ;;
1413         esac
1414 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1415         # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1416         SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1417 fi
1418
1419 # If this is a cross-compiler that does not
1420 # have its own set of headers then define
1421 # inhibit_libc
1422
1423 # If this is using newlib, without having the headers available now,
1424 # then define inhibit_libc in LIBGCC2_CFLAGS.
1425 # This prevents libgcc2 from containing any code which requires libc
1426 # support.
1427 inhibit_libc=
1428 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1429        test x$with_newlib = xyes ; } &&
1430      test "x$with_headers" = x ; then
1431        inhibit_libc=-Dinhibit_libc
1432 fi
1433 AC_SUBST(inhibit_libc)
1434
1435 # When building gcc with a cross-compiler, we need to adjust things so
1436 # that the generator programs are still built with the native compiler.
1437 # Also, we cannot run fixincludes or fix-header.
1438
1439 # These are the normal (build=host) settings:
1440 BUILD_PREFIX=                   AC_SUBST(BUILD_PREFIX)
1441 BUILD_PREFIX_1=ignore-          AC_SUBST(BUILD_PREFIX_1)
1442 BUILD_CC='$(CC)'                AC_SUBST(BUILD_CC)
1443 BUILD_CFLAGS='$(ALL_CFLAGS)'    AC_SUBST(BUILD_CFLAGS)
1444
1445 STMP_FIXINC=stmp-fixinc         AC_SUBST(STMP_FIXINC)
1446 STMP_FIXPROTO=stmp-fixproto     AC_SUBST(STMP_FIXPROTO)
1447
1448 # And these apply if build != host.
1449 if test x$build != x$host
1450 then
1451     BUILD_PREFIX=build-
1452     BUILD_PREFIX_1=build-
1453     BUILD_CC='$(CC_FOR_BUILD)'
1454     BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD) $(XCFLAGS)'
1455
1456     if test "x$TARGET_SYSTEM_ROOT" = x; then
1457         STMP_FIXINC=
1458         STMP_FIXPROTO=
1459     fi
1460 fi
1461
1462 # Expand extra_headers to include complete path.
1463 # This substitutes for lots of t-* files.
1464 extra_headers_list=
1465 if test "x$extra_headers" = x
1466 then true
1467 else
1468         # Prepend ${srcdir}/config/${cpu_type}/ to every entry in extra_headers.
1469         for file in $extra_headers;
1470         do
1471                 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1472         done
1473 fi
1474
1475 # Add a definition of USE_COLLECT2 if system wants one.
1476 case $use_collect2 in
1477   no) use_collect2= ;;
1478   "") ;;
1479   *)
1480     host_xm_defines="${host_xm_defines} USE_COLLECT2"
1481     xm_defines="${xm_defines} USE_COLLECT2"
1482     ;;
1483 esac
1484
1485 # Identify the assembler which will work hand-in-glove with the newly
1486 # built GCC, so that we can examine its features.  This is the assembler
1487 # which will be driven by the driver program.
1488 #
1489 # If build != host, and we aren't building gas in-tree, we identify a
1490 # build->target assembler and hope that it will have the same features
1491 # as the host->target assembler we'll be using.
1492 AC_MSG_CHECKING(what assembler to use)
1493 in_tree_gas=no
1494 gcc_cv_as=
1495 gcc_cv_gas_major_version=
1496 gcc_cv_gas_minor_version=
1497 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1498 if test -x "$DEFAULT_ASSEMBLER"; then
1499         gcc_cv_as="$DEFAULT_ASSEMBLER"
1500 elif test -x "$AS"; then
1501         gcc_cv_as="$AS"
1502 elif test -x as$host_exeext; then
1503         # Build using assembler in the current directory.
1504         gcc_cv_as=./as$host_exeext
1505 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1506      && test -f ../gas/Makefile; then
1507   # Single tree build which includes gas.
1508   in_tree_gas=yes
1509   _gcc_COMPUTE_GAS_VERSION
1510   rm -f as$host_exeext
1511   $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1512 fi
1513
1514 if test "x$gcc_cv_as" = x; then
1515         # Search the same directories that the installed compiler will
1516         # search.  Else we may find the wrong assembler and lose.  If we
1517         # do not find a suitable assembler binary, then try the user's
1518         # path.
1519         #
1520         # Also note we have to check MD_EXEC_PREFIX before checking the
1521         # user's path.  Unfortunately, there is no good way to get at the
1522         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1523         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1524         # to be fixed as part of the make/configure rewrite too.
1525
1526         if test "x$exec_prefix" = xNONE; then
1527                 if test "x$prefix" = xNONE; then
1528                         test_prefix=/usr/local
1529                 else
1530                         test_prefix=$prefix
1531                 fi
1532         else
1533                 test_prefix=$exec_prefix
1534         fi
1535
1536         # If the loop below does not find an assembler, then use whatever
1537         # one we can find in the users's path.
1538         # user's path.
1539         if test "x$program_prefix" != xNONE; then
1540                 gcc_cv_as=${program_prefix}as$host_exeext
1541         else
1542                 gcc_cv_as=`echo as | sed ${program_transform_name}`$host_exeext
1543         fi
1544
1545         test_dirs="$test_prefix/lib/gcc-lib/$target_alias/$gcc_version \
1546                    $test_prefix/lib/gcc-lib/$target_alias \
1547                    /usr/lib/gcc/$target_alias/$gcc_version \
1548                    /usr/lib/gcc/$target_alias \
1549                    $test_prefix/$target_alias/bin/$target_alias/$gcc_version \
1550                    $test_prefix/$target_alias/bin"
1551
1552         if test x$host = x$target; then
1553             test_dirs="$test_dirs \
1554                    /usr/libexec \
1555                    /usr/ccs/gcc \
1556                    /usr/ccs/bin \
1557                    /udk/usr/ccs/bin \
1558                    /bsd43/usr/lib/cmplrs/cc \
1559                    /usr/cross64/usr/bin \
1560                    /usr/lib/cmplrs/cc \
1561                    /sysv/usr/lib/cmplrs/cc \
1562                    /svr4/usr/lib/cmplrs/cc \
1563                    /usr/bin"
1564         fi
1565
1566         for dir in $test_dirs; do
1567                 if test -x $dir/as$host_exeext; then
1568                         gcc_cv_as=$dir/as$host_exeext
1569                         break;
1570                 fi
1571         done
1572 fi
1573 case $in_tree_gas in
1574   yes)
1575     AC_MSG_RESULT("newly built gas")
1576     ;;
1577   no)
1578     AC_MSG_RESULT($gcc_cv_as)
1579     ;;
1580 esac
1581
1582 # Identify the linker which will work hand-in-glove with the newly
1583 # built GCC, so that we can examine its features.  This is the linker
1584 # which will be driven by the driver program.
1585 #
1586 # If build != host, and we aren't building gas in-tree, we identify a
1587 # build->target linker and hope that it will have the same features
1588 # as the host->target linker we'll be using.
1589 AC_MSG_CHECKING(what linker to use)
1590 in_tree_ld=no
1591 gcc_cv_ld=
1592 gcc_cv_gld_major_version=
1593 gcc_cv_gld_minor_version=
1594 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1595 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1596 if test -x "$DEFAULT_LINKER"; then
1597         gcc_cv_ld="$DEFAULT_LINKER"
1598 elif test -x "$LD"; then
1599         gcc_cv_ld="$LD"
1600 elif test -x collect-ld$host_exeext; then
1601         # Build using linker in the current directory.
1602         gcc_cv_ld=./collect-ld$host_exeext
1603 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1604      && test -f ../ld/Makefile; then
1605         # Single tree build which includes ld.
1606         in_tree_ld=yes
1607         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
1608         do
1609 changequote(,)dnl
1610                 gcc_cv_gld_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
1611 changequote([,])dnl
1612                 if test x$gcc_cv_gld_version != x; then
1613                         break
1614                 fi
1615         done
1616 changequote(,)dnl
1617         gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1618         gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1619 changequote([,])dnl
1620         rm -f collect-ld$host_exeext
1621         $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext \
1622                 2>/dev/null
1623 fi
1624
1625 if test "x$gcc_cv_ld" = x; then
1626         # Search the same directories that the installed compiler will
1627         # search.  Else we may find the wrong linker and lose.  If we
1628         # do not find a suitable linker binary, then try the user's
1629         # path.
1630         #
1631         # Also note we have to check MD_EXEC_PREFIX before checking the
1632         # user's path.  Unfortunately, there is no good way to get at the
1633         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1634         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1635         # to be fixed as part of the make/configure rewrite too.
1636
1637         if test "x$exec_prefix" = xNONE; then
1638                 if test "x$prefix" = xNONE; then
1639                         test_prefix=/usr/local
1640                 else
1641                         test_prefix=$prefix
1642                 fi
1643         else
1644                 test_prefix=$exec_prefix
1645         fi
1646
1647         # If the loop below does not find an linker, then use whatever
1648         # one we can find in the users's path.
1649         # user's path.
1650         if test "x$program_prefix" != xNONE; then
1651                 gcc_cv_ld=${program_prefix}ld$host_exeext
1652         else
1653                 gcc_cv_ld=`echo ld | sed ${program_transform_name}`$host_exeext
1654         fi
1655
1656         test_dirs="$test_prefix/lib/gcc-lib/$target_alias/$gcc_version \
1657                    $test_prefix/lib/gcc-lib/$target_alias \
1658                    /usr/lib/gcc/$target_alias/$gcc_version \
1659                    /usr/lib/gcc/$target_alias \
1660                    $test_prefix/$target_alias/bin/$target_alias/$gcc_version \
1661                    $test_prefix/$target_alias/bin"
1662
1663         if test x$host = x$target; then
1664             test_dirs="$test_dirs \
1665                    /usr/libexec \
1666                    /usr/ccs/gcc \
1667                    /usr/ccs/bin \
1668                    /udk/usr/ccs/bin \
1669                    /bsd43/usr/lib/cmplrs/cc \
1670                    /usr/cross64/usr/bin \
1671                    /usr/lib/cmplrs/cc \
1672                    /sysv/usr/lib/cmplrs/cc \
1673                    /svr4/usr/lib/cmplrs/cc \
1674                    /usr/bin"
1675         fi
1676
1677         for dir in $test_dirs; do
1678                 if test -x $dir/ld$host_exeext; then
1679                         gcc_cv_ld=$dir/ld$host_exeext
1680                         break;
1681                 fi
1682         done
1683 fi
1684 case $in_tree_ld in
1685   yes)
1686     AC_MSG_RESULT("newly built ld")
1687     ;;
1688   no)
1689     AC_MSG_RESULT($gcc_cv_ld)
1690     ;;
1691 esac
1692
1693 # Figure out what nm we will be using.
1694 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1695 AC_MSG_CHECKING(what nm to use)
1696 in_tree_nm=no
1697 if test -x nm$host_exeext; then
1698         gcc_cv_nm=./nm$host_exeext
1699 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1700      && test -f ../binutils/Makefile; then
1701         # Single tree build which includes binutils.
1702         in_tree_nm=yes
1703         gcc_cv_nm=./nm$host_exeext
1704         rm -f nm$host_exeext
1705         $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1706 elif test "x$program_prefix" != xNONE; then
1707         gcc_cv_nm=${program_prefix}nm$host_exeext
1708 else
1709         gcc_cv_nm=`echo nm | sed ${program_transform_name}`$host_exeext
1710 fi
1711 case $in_tree_nm in
1712   yes) AC_MSG_RESULT("newly built nm") ;;
1713   no)  AC_MSG_RESULT($gcc_cv_nm) ;;
1714 esac
1715
1716 # Figure out what objdump we will be using.
1717 AC_MSG_CHECKING(what objdump to use)
1718 in_tree_objdump=no
1719 if test -x objdump$host_exeext; then
1720         gcc_cv_objdump=./objdump$host_exeext
1721 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1722      && test -f ../binutils/Makefile; then
1723         # Single tree build which includes binutils.
1724         in_tree_objdump=yes
1725         gcc_cv_objdump=./objdump$host_exeext
1726         rm -f objdump$host_exeext
1727         $symbolic_link ../binutils/objdump$host_exeext \
1728                 objdump$host_exeext 2>/dev/null
1729 elif test "x$program_prefix" != xNONE; then
1730         gcc_cv_objdump=${program_prefix}objdump$host_exeext
1731 else
1732         gcc_cv_objdump=`echo objdump | \
1733                 sed ${program_transform_name}`$host_exeext
1734 fi
1735 case $in_tree_objdump in
1736   yes) AC_MSG_RESULT("newly built objdump") ;;
1737   no)  AC_MSG_RESULT($gcc_cv_objdump) ;;
1738 esac
1739
1740 # Figure out what assembler alignment features are present.
1741 AC_MSG_CHECKING(assembler alignment features)
1742 gcc_cv_as_alignment_features=none
1743 if test $in_tree_gas = yes; then
1744   # Gas version 2.6 and later support for .balign and .p2align.
1745   gcc_GAS_VERSION_GTE_IFELSE(2,6,0,[
1746     gcc_cv_as_alignment_features=".balign and .p2align"
1747     AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1748   ])
1749   # Gas version 2.8 and later support specifying the maximum
1750   # bytes to skip when using .p2align.
1751   gcc_GAS_VERSION_GTE_IFELSE(2,8,0,[
1752     gcc_cv_as_alignment_features=".p2align including maximum skip"
1753     AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1754   ])
1755 elif test x$gcc_cv_as != x; then
1756         # Check if we have .balign and .p2align
1757         echo ".balign  4" > conftest.s
1758         echo ".p2align  2" >> conftest.s
1759         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1760                 gcc_cv_as_alignment_features=".balign and .p2align"
1761                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1762         fi
1763         rm -f conftest.s conftest.o
1764         # Check if specifying the maximum bytes to skip when
1765         # using .p2align is supported.
1766         echo ".p2align 4,,7" > conftest.s
1767         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1768                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1769                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1770         fi
1771         rm -f conftest.s conftest.o
1772 fi
1773 AC_MSG_RESULT($gcc_cv_as_alignment_features)
1774
1775 AC_MSG_CHECKING(assembler subsection support)
1776 gcc_cv_as_subsections=no
1777 if test $in_tree_gas = yes ; then
1778   gcc_GAS_VERSION_GTE_IFELSE(2,9,0,[
1779     if grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1780       gcc_cv_as_subsections="working .subsection -1"
1781     fi
1782   ])
1783 elif test x$gcc_cv_as != x; then
1784         # Check if we have .subsection
1785         echo ".subsection 1" > conftest.s
1786         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1787                 gcc_cv_as_subsections=".subsection"
1788                 if test x$gcc_cv_nm != x; then
1789                         cat > conftest.s <<EOF
1790 conftest_label1: .word 0
1791 .subsection -1
1792 conftest_label2: .word 0
1793 .previous
1794 EOF
1795                         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1796                                 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1797                                 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1798                                 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1; then
1799                                         :
1800                                 else
1801                                         gcc_cv_as_subsections="working .subsection -1"
1802                                 fi
1803                         fi
1804                 fi
1805         fi
1806         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1807 fi
1808 if test x"$gcc_cv_as_subsections" = x"working .subsection -1"; then
1809         AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1810 [Define if your assembler supports .subsection and .subsection -1 starts
1811    emitting at the beginning of your section.])
1812 fi
1813 AC_MSG_RESULT($gcc_cv_as_subsections)
1814
1815 AC_MSG_CHECKING(assembler weak support)
1816 gcc_cv_as_weak=no
1817 if test $in_tree_gas = yes ; then
1818   gcc_GAS_VERSION_GTE_IFELSE(2,2,0,[
1819     gcc_cv_as_weak="yes"
1820   ])
1821 elif test x$gcc_cv_as != x; then
1822         # Check if we have .weak
1823         echo "  .weak foobar" > conftest.s
1824         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1825                 gcc_cv_as_weak="yes"
1826         fi
1827         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1828 fi
1829 if test x"$gcc_cv_as_weak" = xyes; then
1830         AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])
1831 fi
1832 AC_MSG_RESULT($gcc_cv_as_weak)
1833
1834 AC_MSG_CHECKING(assembler hidden support)
1835 gcc_cv_as_hidden=no
1836 if test $in_tree_gas = yes ; then
1837   gcc_GAS_VERSION_GTE_IFELSE(2,12,1,[
1838     if grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1839       gcc_cv_as_hidden="yes"
1840     fi
1841   ])
1842 elif test x$gcc_cv_as != x; then
1843         # Check if we have .hidden
1844         echo "  .hidden foobar" > conftest.s
1845         echo "foobar:" >> conftest.s
1846         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1847                 gcc_cv_as_hidden="yes"
1848         fi
1849         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1850
1851         # GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
1852         # This is irritatingly difficult to feature test for.  Look for
1853         # the date string after the version number.
1854         ld_ver=`$gcc_cv_ld --version 2>/dev/null | head -1`
1855         if echo "$ld_ver" | grep GNU > /dev/null; then
1856 changequote(,)dnl
1857                ld_vers=`echo $ld_ver | sed -n 's,^.*[  ]\([0-9][0-9]*\.[0-9][0-9]*\(\|\.[0-9][0-9]*\(\|\.[0-9][0-9]*\)\)\)\([  ].*\|\)$,\1,p'`
1858                ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
1859                 if test 0"$ld_date" -lt 20020404; then
1860                         if test -n "$ld_date"; then
1861                                 # If there was date string, but was earlier than 2002-04-04, fail
1862                                 gcc_cv_as_hidden="no"
1863                         elif test -z "$ld_vers"; then
1864                                 # If there was no date string nor ld version number, something is wrong
1865                                 gcc_cv_as_hidden="no"
1866                         else
1867                                 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
1868                                 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
1869                                 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
1870                                 test -z "$ld_vers_patch" && ld_vers_patch=0
1871                                 if test "$ld_vers_major" -lt 2; then
1872                                         gcc_cv_as_hidden="no"
1873                                 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
1874                                         gcc_cv_as_hidden="no"
1875                                 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 \
1876                                           -a "$ld_vers_patch" -eq 0; then
1877                                         gcc_cv_as_hidden="no"
1878                                 fi
1879                         fi
1880                 fi
1881 changequote([,])dnl
1882         fi
1883 fi
1884 case "$target" in
1885   mips-sgi-irix6*)
1886     if test x"$gnu_ld_flag" = x"no"; then
1887       # Even if using gas with .hidden support, the resulting object files
1888       # cannot be linked with the IRIX 6 O32 linker.  With the N32 and
1889       # N64 linkers, the problem is that the linker refuses to accept
1890       # -call_shared (passed by default to the linker) and -r (used to
1891       # link the object file generated without .hidden directives with
1892       # one that hides symbols), so we also lose.
1893       gcc_cv_as_hidden=no
1894     fi
1895     ;;
1896 esac
1897 if test x"$gcc_cv_as_hidden" = xyes; then
1898         AC_DEFINE(HAVE_GAS_HIDDEN, 1,
1899                 [Define if your assembler supports .hidden.])
1900 fi
1901 AC_MSG_RESULT($gcc_cv_as_hidden)
1902 libgcc_visibility=$gcc_cv_as_hidden
1903 AC_SUBST(libgcc_visibility)
1904
1905 AC_MSG_CHECKING(assembler leb128 support)
1906 gcc_cv_as_leb128=no
1907 if test $in_tree_gas = yes ; then
1908   gcc_GAS_VERSION_GTE_IFELSE(2,11,0,[
1909     if grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1910       gcc_cv_as_leb128="yes"
1911     fi
1912   ])
1913 elif test x$gcc_cv_as != x; then
1914         # Check if we have .[us]leb128, and support symbol arithmetic with it.
1915         cat > conftest.s <<EOF
1916         .data
1917         .uleb128 L2 - L1
1918 L1:
1919         .uleb128 1280
1920         .sleb128 -1010
1921 L2:
1922 EOF
1923         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1924                 gcc_cv_as_leb128="yes"
1925
1926                 # GAS versions before 2.11 do not support uleb128,
1927                 # despite appearing to.
1928                 # ??? There exists an elf-specific test that will crash
1929                 # the assembler.  Perhaps it's better to figure out whether
1930                 # arbitrary sections are supported and try the test.
1931                 as_ver=`$gcc_cv_as --version 2>/dev/null | head -1`
1932                 if echo "$as_ver" | grep GNU > /dev/null; then
1933 changequote(,)dnl
1934                         as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
1935                         as_major=`echo $as_ver | sed 's/\..*//'`
1936                         as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
1937 changequote([,])dnl
1938                         if test $as_major -eq 2 -a $as_minor -lt 11; then
1939                                 gcc_cv_as_leb128="no"
1940                         fi
1941                 fi
1942         fi
1943         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1944 fi
1945 if test x"$gcc_cv_as_leb128" = xyes; then
1946         AC_DEFINE(HAVE_AS_LEB128, 1,
1947                 [Define if your assembler supports .uleb128.])
1948 fi
1949 AC_MSG_RESULT($gcc_cv_as_leb128)
1950
1951 AC_MSG_CHECKING(assembler eh_frame optimization)
1952 gcc_cv_as_eh_frame=no
1953 if test $in_tree_gas = yes ; then
1954   gcc_GAS_VERSION_GTE_IFELSE(2,12,0,[
1955     if grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1956       gcc_cv_as_eh_frame="yes"
1957     fi
1958   ])
1959 elif test x$gcc_cv_as != x; then
1960         # Check if this is GAS.
1961         as_ver=`$gcc_cv_as --version < /dev/null 2> /dev/null | head -1`
1962         rm -f a.out 2> /dev/null
1963         if echo "$as_ver" | grep GNU > /dev/null; then
1964                 # Versions up to and including 2.11.0 may mis-optimize
1965                 # .eh_frame data.  Try something.
1966                 cat > conftest.s <<EOF
1967         .text
1968 .LFB1:
1969         .4byte  0
1970 .L1:
1971         .4byte  0
1972 .LFE1:
1973         .section        .eh_frame,"aw",@progbits
1974 __FRAME_BEGIN__:
1975         .4byte  .LECIE1-.LSCIE1
1976 .LSCIE1:
1977         .4byte  0x0
1978         .byte   0x1
1979         .ascii "z\0"
1980         .byte   0x1
1981         .byte   0x78
1982         .byte   0x1a
1983         .byte   0x0
1984         .byte   0x4
1985         .4byte  1
1986         .p2align 1
1987 .LECIE1:
1988 .LSFDE1:
1989         .4byte  .LEFDE1-.LASFDE1
1990 .LASFDE1:
1991         .4byte  .LASFDE1-__FRAME_BEGIN__
1992         .4byte  .LFB1
1993         .4byte  .LFE1-.LFB1
1994         .byte   0x4
1995         .4byte  .LFE1-.LFB1
1996         .byte   0x4
1997         .4byte  .L1-.LFB1
1998 .LEFDE1:
1999 EOF
2000                 cat > conftest.lit <<EOF
2001  0000 10000000 00000000 017a0001 781a0004  .........z..x...
2002  0010 01000000 12000000 18000000 00000000  ................
2003  0020 08000000 04080000 0044               .........D
2004 EOF
2005                 cat > conftest.big <<EOF
2006  0000 00000010 00000000 017a0001 781a0004  .........z..x...
2007  0010 00000001 00000012 00000018 00000000  ................
2008  0020 00000008 04000000 0844               .........D
2009 EOF
2010                 # If the assembler didn't choke, and we can objdump,
2011                 # and we got the correct data, then succeed.
2012                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2013                    && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2014                       | tail -3 > conftest.got \
2015                    && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2016                         || cmp conftest.big conftest.got > /dev/null 2>&1; }
2017                 then
2018                         gcc_cv_as_eh_frame="yes"
2019                 else
2020                         gcc_cv_as_eh_frame="bad"
2021                         if $gcc_cv_as -o conftest.o --traditional-format /dev/null; then
2022                                 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2023         [Define if your assembler mis-optimizes .eh_frame data.])
2024                         fi
2025                 fi
2026         fi
2027         rm -f conftest.*
2028 fi
2029 AC_MSG_RESULT($gcc_cv_as_eh_frame)
2030
2031 AC_MSG_CHECKING(assembler section merging support)
2032 gcc_cv_as_shf_merge=no
2033 if test $in_tree_gas = yes ; then
2034   gcc_GAS_VERSION_GTE_IFELSE(2,12,0,[
2035     if grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
2036       gcc_cv_as_shf_merge=yes
2037     fi
2038   ])
2039 elif test x$gcc_cv_as != x; then
2040         # Check if we support SHF_MERGE sections
2041         echo '.section .rodata.str, "aMS", @progbits, 1' > conftest.s
2042         if $gcc_cv_as --fatal-warnings -o conftest.o conftest.s > /dev/null 2>&1; then
2043                 gcc_cv_as_shf_merge=yes
2044         fi
2045         rm -f conftest.s conftest.o
2046 fi
2047 if test x"$gcc_cv_as_shf_merge" = xyes; then
2048         AC_DEFINE(HAVE_GAS_SHF_MERGE, 1,
2049 [Define if your assembler supports marking sections with SHF_MERGE flag.])
2050 fi
2051 AC_MSG_RESULT($gcc_cv_as_shf_merge)
2052
2053 AC_MSG_CHECKING(assembler thread-local storage support)
2054 gcc_cv_as_tls=no
2055 conftest_s=
2056 tls_first_major=
2057 tls_first_minor=
2058 tls_as_opt=
2059 case "$target" in
2060 changequote(,)dnl
2061   alpha*-*-*)
2062     conftest_s='
2063         .section ".tdata","awT",@progbits
2064 foo:    .long   25
2065         .text
2066         ldq     $27,__tls_get_addr($29)         !literal!1
2067         lda     $16,foo($29)                    !tlsgd!1
2068         jsr     $26,($27),__tls_get_addr        !lituse_tlsgd!1
2069         ldq     $27,__tls_get_addr($29)         !literal!2
2070         lda     $16,foo($29)                    !tlsldm!2
2071         jsr     $26,($27),__tls_get_addr        !lituse_tlsldm!2
2072         ldq     $1,foo($29)                     !gotdtprel
2073         ldah    $2,foo($29)                     !dtprelhi
2074         lda     $3,foo($2)                      !dtprello
2075         lda     $4,foo($29)                     !dtprel
2076         ldq     $1,foo($29)                     !gottprel
2077         ldah    $2,foo($29)                     !tprelhi
2078         lda     $3,foo($2)                      !tprello
2079         lda     $4,foo($29)                     !tprel'
2080         tls_first_major=2
2081         tls_first_minor=13
2082         ;;
2083   i[34567]86-*-*)
2084 changequote([,])dnl
2085     conftest_s='
2086         .section ".tdata","awT",@progbits
2087 foo:    .long   25
2088         .text
2089         movl    %gs:0, %eax
2090         leal    foo@TLSGD(,%ebx,1), %eax
2091         leal    foo@TLSLDM(%ebx), %eax
2092         leal    foo@DTPOFF(%eax), %edx
2093         movl    foo@GOTTPOFF(%ebx), %eax
2094         subl    foo@GOTTPOFF(%ebx), %eax
2095         addl    foo@GOTNTPOFF(%ebx), %eax
2096         movl    foo@INDNTPOFF, %eax
2097         movl    $foo@TPOFF, %eax
2098         subl    $foo@TPOFF, %eax
2099         leal    foo@NTPOFF(%ecx), %eax'
2100         tls_first_major=2
2101         tls_first_minor=14
2102         ;;
2103   x86_64-*-*)
2104     conftest_s='
2105         .section ".tdata","awT",@progbits
2106 foo:    .long   25
2107         .text
2108         movq    %fs:0, %rax
2109         leaq    foo@TLSGD(%rip), %rdi
2110         leaq    foo@TLSLD(%rip), %rdi
2111         leaq    foo@DTPOFF(%rax), %rdx
2112         movq    foo@GOTTPOFF(%rip), %rax
2113         movq    $foo@TPOFF, %rax'
2114         tls_first_major=2
2115         tls_first_minor=14
2116         ;;
2117   ia64-*-*)
2118     conftest_s='
2119         .section ".tdata","awT",@progbits
2120 foo:    data8   25
2121         .text
2122         addl    r16 = @ltoff(@dtpmod(foo#)), gp
2123         addl    r17 = @ltoff(@dtprel(foo#)), gp
2124         addl    r18 = @ltoff(@tprel(foo#)), gp
2125         addl    r19 = @dtprel(foo#), gp
2126         adds    r21 = @dtprel(foo#), r13
2127         movl    r23 = @dtprel(foo#)
2128         addl    r20 = @tprel(foo#), gp
2129         adds    r22 = @tprel(foo#), r13
2130         movl    r24 = @tprel(foo#)'
2131         tls_first_major=2
2132         tls_first_minor=13
2133         ;;
2134   powerpc-*-*)
2135     conftest_s='
2136         .section ".tdata","awT",@progbits
2137         .align 2
2138 ld0:    .space 4
2139 ld1:    .space 4
2140 x1:     .space 4
2141 x2:     .space 4
2142 x3:     .space 4
2143         .text
2144         addi 3,31,ld0@got@tlsgd
2145         bl __tls_get_addr
2146         addi 3,31,x1@got@tlsld
2147         bl __tls_get_addr
2148         addi 9,3,x1@dtprel
2149         addis 9,3,x2@dtprel@ha
2150         addi 9,9,x2@dtprel@l
2151         lwz 9,x3@got@tprel(31)
2152         add 9,9,x@tls
2153         addi 9,2,x1@tprel
2154         addis 9,2,x2@tprel@ha
2155         addi 9,9,x2@tprel@l'
2156         tls_first_major=2
2157         tls_first_minor=14
2158         tls_as_opt=-a32
2159         ;;
2160   powerpc64-*-*)
2161     conftest_s='
2162         .section ".tdata","awT",@progbits
2163         .align 3
2164 ld0:    .space 8
2165 ld1:    .space 8
2166 x1:     .space 8
2167 x2:     .space 8
2168 x3:     .space 8
2169         .text
2170         addi 3,2,ld0@got@tlsgd
2171         bl .__tls_get_addr
2172         nop
2173         addi 3,2,ld1@toc
2174         bl .__tls_get_addr
2175         nop
2176         addi 3,2,x1@got@tlsld
2177         bl .__tls_get_addr
2178         nop
2179         addi 9,3,x1@dtprel
2180         bl .__tls_get_addr
2181         nop
2182         addis 9,3,x2@dtprel@ha
2183         addi 9,9,x2@dtprel@l
2184         bl .__tls_get_addr
2185         nop
2186         ld 9,x3@got@dtprel(2)
2187         add 9,9,3
2188         bl .__tls_get_addr
2189         nop'
2190         tls_first_major=2
2191         tls_first_minor=14
2192         tls_as_opt=-a64
2193         ;;
2194   s390-*-*)
2195     conftest_s='
2196         .section ".tdata","awT",@progbits
2197 foo:    .long   25
2198         .text
2199         .long   foo@TLSGD
2200         .long   foo@TLSLDM
2201         .long   foo@DTPOFF
2202         .long   foo@NTPOFF
2203         .long   foo@GOTNTPOFF
2204         .long   foo@INDNTPOFF
2205         l       %r1,foo@GOTNTPOFF(%r12)
2206         l       %r1,0(%r1):tls_load:foo
2207         bas     %r14,0(%r1,%r13):tls_gdcall:foo
2208         bas     %r14,0(%r1,%r13):tls_ldcall:foo'
2209         tls_first_major=2
2210         tls_first_minor=14
2211         tls_as_opt=-m31
2212         ;;
2213   s390x-*-*)
2214     conftest_s='
2215         .section ".tdata","awT",@progbits
2216 foo:    .long   25
2217         .text
2218         .quad   foo@TLSGD
2219         .quad   foo@TLSLDM
2220         .quad   foo@DTPOFF
2221         .quad   foo@NTPOFF
2222         .quad   foo@GOTNTPOFF
2223         lg      %r1,foo@GOTNTPOFF(%r12)
2224         larl    %r1,foo@INDNTPOFF
2225         brasl   %r14,__tls_get_offset@PLT:tls_gdcall:foo
2226         brasl   %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2227         tls_first_major=2
2228         tls_first_minor=14
2229         tls_as_opt="-m64 -Aesame"
2230         ;;
2231 esac
2232 if test -z "$tls_first_major"; then
2233   :
2234 elif test $in_tree_gas = yes ; then
2235   gcc_GAS_VERSION_GTE_IFELSE($tls_first_major,$tls_first_minor,0,[
2236     gcc_cv_as_tls=yes
2237   ])
2238 elif test x$gcc_cv_as != x; then
2239   echo "$conftest_s" > conftest.s
2240   if $gcc_cv_as $tls_as_opt --fatal-warnings -o conftest.o conftest.s > /dev/null 2>&1
2241   then
2242     gcc_cv_as_tls=yes
2243   fi
2244   rm -f conftest.s conftest.o
2245 fi
2246 if test "$gcc_cv_as_tls" = yes; then
2247   AC_DEFINE(HAVE_AS_TLS, 1,
2248             [Define if your assembler supports thread-local storage.])
2249 fi
2250 AC_MSG_RESULT($gcc_cv_as_tls)
2251
2252 case "$target" in
2253   # All TARGET_ABI_OSF targets.
2254   alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2255     AC_CACHE_CHECK([assembler supports explicit relocations],
2256         gcc_cv_as_explicit_relocs, [
2257         gcc_cv_as_explicit_relocs=unknown
2258         if test $in_tree_gas = yes ; then
2259            gcc_GAS_VERSION_GTE_IFELSE(2,12,0,[
2260               gcc_cv_as_explicit_relocs=yes
2261            ])
2262         elif test x$gcc_cv_as != x; then
2263             cat > conftest.s << 'EOF'
2264         .set nomacro
2265         .text
2266         extbl   $3, $2, $3      !lituse_bytoff!1
2267         ldq     $2, a($29)      !literal!1
2268         ldq     $4, b($29)      !literal!2
2269         ldq_u   $3, 0($2)       !lituse_base!1
2270         ldq     $27, f($29)     !literal!5
2271         jsr     $26, ($27), f   !lituse_jsr!5
2272         ldah    $29, 0($26)     !gpdisp!3
2273         lda     $0, c($29)      !gprel
2274         ldah    $1, d($29)      !gprelhigh
2275         lda     $1, d($1)       !gprellow
2276         lda     $29, 0($29)     !gpdisp!3
2277 EOF
2278             if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
2279                 gcc_cv_as_explicit_relocs=yes
2280             else
2281                 gcc_cv_as_explicit_relocs=no
2282             fi
2283             rm -f conftest.s conftest.o
2284         fi
2285     ])
2286     if test "x$gcc_cv_as_explicit_relocs" = xyes; then
2287         AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2288                 [Define if your assembler supports explicit relocations.])
2289     fi
2290     ;;
2291   sparc*-*-*)
2292     AC_CACHE_CHECK([assembler .register pseudo-op support],
2293         gcc_cv_as_register_pseudo_op, [
2294         gcc_cv_as_register_pseudo_op=unknown
2295         if test x$gcc_cv_as != x; then
2296             # Check if we have .register
2297             echo ".register %g2, #scratch" > conftest.s
2298             if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
2299                 gcc_cv_as_register_pseudo_op=yes
2300             else
2301                 gcc_cv_as_register_pseudo_op=no
2302             fi
2303             rm -f conftest.s conftest.o
2304         fi
2305     ])
2306     if test "x$gcc_cv_as_register_pseudo_op" = xyes; then
2307         AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2308                 [Define if your assembler supports .register.])
2309     fi
2310
2311     AC_CACHE_CHECK([assembler supports -relax],
2312         gcc_cv_as_relax_opt, [
2313         gcc_cv_as_relax_opt=unknown
2314         if test x$gcc_cv_as != x; then
2315             # Check if gas supports -relax
2316             echo ".text" > conftest.s
2317             if $gcc_cv_as -relax -o conftest.o conftest.s > /dev/null 2>&1; then
2318                 gcc_cv_as_relax_opt=yes
2319             else
2320                 gcc_cv_as_relax_opt=no
2321             fi
2322             rm -f conftest.s conftest.o
2323         fi
2324     ])
2325     if test "x$gcc_cv_as_relax_opt" = xyes; then
2326         AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2327                 [Define if your assembler supports -relax option.])
2328     fi
2329
2330     AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
2331         gcc_cv_as_sparc_ua_pcrel, [
2332         gcc_cv_as_sparc_ua_pcrel=unknown
2333         if test x$gcc_cv_as != x -a x$gcc_cv_ld != x; then
2334             gcc_cv_as_sparc_ua_pcrel=no
2335             echo ".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo)" > conftest.s
2336             if $gcc_cv_as -K PIC -o conftest.o conftest.s > /dev/null 2>&1 \
2337                && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2338                 gcc_cv_as_sparc_ua_pcrel=yes
2339             fi
2340             rm -f conftest.s conftest.o conftest
2341         fi
2342     ])
2343     if test "x$gcc_cv_as_sparc_ua_pcrel" = xyes; then
2344         AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2345                 [Define if your assembler and linker support unaligned PC relative relocs.])
2346     fi
2347
2348     AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs against hidden symbols],
2349         gcc_cv_as_sparc_ua_pcrel_hidden, [
2350         if test "x$gcc_cv_as_sparc_ua_pcrel" = xyes; then
2351             gcc_cv_as_sparc_ua_pcrel_hidden=unknown
2352             if test x$gcc_cv_objdump != x; then
2353                 gcc_cv_as_sparc_ua_pcrel_hidden=no
2354                 echo ".data; .align 4; .byte 0x31; .uaword %r_disp32(foo)" > conftest.s
2355                 echo ".byte 0x32, 0x33, 0x34; .global foo; .hidden foo" >> conftest.s
2356                 echo "foo: .skip 4" >> conftest.s
2357                 if $gcc_cv_as -K PIC -o conftest.o conftest.s > /dev/null 2>&1 \
2358                    && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2359                    && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2360                       | grep ' 31000000 07323334' > /dev/null 2>&1; then
2361                     if $gcc_cv_objdump -R conftest 2> /dev/null \
2362                        | grep 'DISP32' > /dev/null 2>&1; then
2363                         :
2364                     else
2365                         gcc_cv_as_sparc_ua_pcrel_hidden=yes
2366                     fi
2367                 fi
2368             fi
2369             rm -f conftest.s conftest.o conftest
2370         else
2371             gcc_cv_as_sparc_ua_pcrel_hidden="$gcc_cv_as_sparc_ua_pcrel"
2372         fi
2373     ])
2374     if test "x$gcc_cv_as_sparc_ua_pcrel_hidden" = xyes; then
2375         AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2376                 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])
2377     fi
2378
2379     AC_CACHE_CHECK([for assembler offsetable %lo() support],
2380         gcc_cv_as_offsetable_lo10, [
2381         gcc_cv_as_offsetable_lo10=unknown
2382         if test "x$gcc_cv_as" != x; then
2383             # Check if assembler has offsetable %lo()
2384             echo "or %g1, %lo(ab) + 12, %g1" > conftest.s
2385             echo "or %g1, %lo(ab + 12), %g1" > conftest1.s
2386             if $gcc_cv_as -xarch=v9 -o conftest.o conftest.s \
2387                     > /dev/null 2>&1 &&
2388                $gcc_cv_as -xarch=v9 -o conftest1.o conftest1.s \
2389                     > /dev/null 2>&1; then
2390                 if cmp conftest.o conftest1.o > /dev/null 2>&1; then
2391                     gcc_cv_as_offsetable_lo10=no
2392                 else
2393                     gcc_cv_as_offsetable_lo10=yes
2394                 fi
2395             else
2396                 gcc_cv_as_offsetable_lo10=no
2397             fi
2398             rm -f conftest.s conftest.o conftest1.s conftest1.o
2399         fi
2400     ])
2401     if test "x$gcc_cv_as_offsetable_lo10" = xyes; then
2402         AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2403             [Define if your assembler supports offsetable %lo().])
2404     fi
2405
2406     ;;
2407
2408 changequote(,)dnl
2409   i[34567]86-*-* | x86_64-*-*)
2410 changequote([,])dnl
2411     AC_MSG_CHECKING(assembler instructions)
2412     gcc_cv_as_instructions=
2413     if test $in_tree_gas = yes ; then
2414       gcc_GAS_VERSION_GTE_IFELSE(2,9,0,[
2415         gcc_cv_as_instructions="filds fists"
2416       ])
2417     elif test x$gcc_cv_as != x; then
2418         set "filds fists" "filds mem; fists mem"
2419         while test $# -gt 0
2420         do
2421                 echo "$2" > conftest.s
2422                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
2423                         gcc_cv_as_instructions=${gcc_cv_as_instructions}$1" "
2424                 fi
2425                 shift 2
2426         done
2427         rm -f conftest.s conftest.o
2428     fi
2429     if test x"$gcc_cv_as_instructions" != x; then
2430         AC_DEFINE_UNQUOTED(HAVE_GAS_`echo "$gcc_cv_as_instructions" | sed -e 's/ $//' | tr '[a-z ]' '[A-Z_]'`)
2431     fi
2432     AC_MSG_RESULT($gcc_cv_as_instructions)
2433
2434     AC_MSG_CHECKING(assembler GOTOFF in data directives)
2435     gcc_cv_as_gotoff_in_data=no
2436     if test $in_tree_gas = yes ; then
2437       gcc_GAS_VERSION_GTE_IFELSE(2,11,0,[
2438         gcc_cv_as_gotoff_in_data=yes
2439       ])
2440     elif test x$gcc_cv_as != x; then
2441         cat > conftest.s <<EOF
2442         .text
2443 .L0:
2444         nop
2445         .data
2446         .long .L0@GOTOFF
2447 EOF
2448         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
2449           gcc_cv_as_gotoff_in_data=yes
2450         fi
2451     fi
2452     AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2453       [`if test $gcc_cv_as_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2454       [Define true if the assembler supports '.long foo@GOTOFF'.])
2455     AC_MSG_RESULT($gcc_cv_as_gotoff_in_data)
2456     ;;
2457
2458   ia64*-*-*)
2459     AC_CACHE_CHECK([assembler supports ltoffx and ldxmov],
2460         gcc_cv_as_ltoffx_ldxmov_relocs, [
2461         gcc_cv_as_ltoffx_ldxmov_relocs=unknown
2462         if test $in_tree_gas = yes ; then
2463           gcc_GAS_VERSION_GTE_IFELSE(2,14,0,[
2464             gcc_cv_as_ltoffx_ldxmov_relocs=yes
2465           ])
2466         elif test x$gcc_cv_as != x; then
2467             cat > conftest.s << 'EOF'
2468 changequote(,)dnl
2469         .text
2470         addl r15 = @ltoffx(x#), gp
2471         ;;
2472         ld8.mov r16 = [r15], x#
2473 EOF
2474 changequote([,])dnl
2475             if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
2476                 gcc_cv_as_ltoffx_ldxmov_relocs=yes
2477             else
2478                 gcc_cv_as_ltoffx_ldxmov_relocs=no
2479             fi
2480             rm -f conftest.s conftest.o
2481         fi
2482     ])
2483     if test "x$gcc_cv_as_ltoffx_ldxmov_relocs" = xyes; then
2484         AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2485           [Define if your assembler supports ltoffx and ldxmov relocations.])
2486     fi
2487     ;;
2488 esac
2489
2490 AC_MSG_CHECKING(assembler dwarf2 debug_line support)
2491 gcc_cv_as_dwarf2_debug_line=no
2492 # ??? Not all targets support dwarf2 debug_line, even within a version
2493 # of gas.  Moreover, we need to emit a valid instruction to trigger any
2494 # info to the output file.  So, as supported targets are added to gas 2.11,
2495 # add some instruction here to (also) show we expect this might work.
2496 # ??? Once 2.11 is released, probably need to add first known working
2497 # version to the per-target configury.
2498 case "$target" in
2499   i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2500   | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* | xstormy16*-*-*)
2501     insn="nop"
2502     ;;
2503   ia64*-*-*)
2504     insn="nop 0"
2505     ;;
2506   esac
2507 if test $in_tree_gas = yes ; then
2508   gcc_GAS_VERSION_GTE_IFELSE(2,11,0,[
2509     if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2510         && test x"$insn" != x ; then
2511       gcc_cv_as_dwarf2_debug_line="yes"
2512     fi
2513   ])
2514 elif test x$gcc_cv_as != x -a x"$insn" != x ; then
2515         echo '  .file 1 "conftest.s"' > conftest.s
2516         echo '  .loc 1 3 0' >> conftest.s
2517         echo "  $insn" >> conftest.s
2518         # ??? This fails with non-gnu grep.
2519         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2520            && grep debug_line conftest.o > /dev/null 2>&1 ; then
2521                 # The .debug_line file table must be in the exact order that
2522                 # we specified the files, since these indices are also used
2523                 # by DW_AT_decl_file.  Approximate this test by testing if
2524                 # the assembler bitches if the same index is assigned twice.
2525                 echo '  .file 1 "foo.s"' > conftest.s
2526                 echo '  .file 1 "bar.s"' >> conftest.s
2527                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1
2528                 then
2529                   gcc_cv_as_dwarf2_debug_line="no"
2530                 else
2531                   gcc_cv_as_dwarf2_debug_line="yes"
2532                 fi
2533         fi
2534         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
2535 fi
2536 if test x"$gcc_cv_as_dwarf2_debug_line" = xyes; then
2537         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2538 [Define if your assembler supports dwarf2 .file/.loc directives,
2539    and preserves file table indices exactly as given.])
2540 fi
2541 AC_MSG_RESULT($gcc_cv_as_dwarf2_debug_line)
2542
2543 AC_MSG_CHECKING(assembler --gdwarf2 support)
2544 gcc_cv_as_gdwarf2_flag=no
2545 if test $in_tree_gas = yes ; then
2546   gcc_GAS_VERSION_GTE_IFELSE(2,11,0,[
2547     if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2548         && test x"$insn" != x ; then
2549       gcc_cv_as_gdwarf2_flag="yes"
2550     fi
2551   ])
2552 elif test x$gcc_cv_as != x -a x"$insn" != x ; then
2553         echo '' > conftest.s
2554         # ??? This fails with non-gnu grep.
2555         if $gcc_cv_as --gdwarf2 -o conftest.o conftest.s > /dev/null 2>&1
2556           then
2557           gcc_cv_as_gdwarf2_flag="yes"
2558         fi
2559         rm -f conftest.s conftest.o
2560 fi
2561 if test x"$gcc_cv_as_gdwarf2_flag" = xyes; then
2562         AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2563 [Define if your assembler supports the --gdwarf2 option.])
2564 fi
2565 AC_MSG_RESULT($gcc_cv_as_gdwarf2_flag)
2566
2567 AC_MSG_CHECKING(assembler --gstabs support)
2568 gcc_cv_as_gstabs_flag=no
2569 if test $in_tree_gas = yes ; then
2570   gcc_GAS_VERSION_GTE_IFELSE(2,11,0,[
2571     if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2572         && test x"$insn" != x ; then
2573       gcc_cv_as_gstabs_flag="yes"
2574     fi
2575   ])
2576 elif test x$gcc_cv_as != x -a x"$insn" != x ; then
2577         echo '' > conftest.s
2578         # ??? This fails with non-gnu grep.
2579         if $gcc_cv_as --gstabs -o conftest.o conftest.s > /dev/null 2>&1 ; then
2580           gcc_cv_as_gstabs_flag="yes"
2581         fi
2582         rm -f conftest.s conftest.o
2583 fi
2584 if test x"$gcc_cv_as_gstabs_flag" = xyes; then
2585         AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2586 [Define if your assembler supports the --gstabs option.])
2587 fi
2588 AC_MSG_RESULT($gcc_cv_as_gstabs_flag)
2589
2590 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2591 gcc_cv_ld_ro_rw_mix=unknown
2592 if test $in_tree_ld = yes ; then
2593   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 && grep 'EMUL = elf' ../ld/Makefile > /dev/null; then
2594     gcc_cv_ld_ro_rw_mix=read-write
2595   fi
2596 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2597   echo '.section "myfoosect", "a"' > conftest1.s
2598   echo '.section "myfoosect", "aw"' > conftest2.s
2599   echo '.byte 1' >> conftest2.s
2600   echo '.section "myfoosect", "a"' > conftest3.s
2601   echo '.byte 0' >> conftest3.s
2602   if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2603      && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2604      && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2605      && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2606         conftest2.o conftest3.o > /dev/null 2>&1; then
2607     gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2608                          | sed -e '/myfoosect/!d' -e N`
2609     if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2610       if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2611         gcc_cv_ld_ro_rw_mix=read-only
2612       else
2613         gcc_cv_ld_ro_rw_mix=read-write
2614       fi
2615     fi
2616   fi
2617 changequote(,)dnl
2618   rm -f conftest.* conftest[123].*
2619 changequote([,])dnl
2620 fi
2621 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2622         AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2623   [Define if your linker links a mix of read-only
2624    and read-write sections into a read-write section.])
2625 fi
2626 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2627
2628 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2629 gcc_cv_ld_eh_frame_hdr=no
2630 if test $in_tree_ld = yes ; then
2631   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 && grep 'EMUL = elf' ../ld/Makefile > /dev/null; then
2632     gcc_cv_ld_eh_frame_hdr=yes
2633   fi
2634 elif test x$gcc_cv_ld != x; then
2635         # Check if linker supports --eh-frame-hdr option
2636         if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2637                 gcc_cv_ld_eh_frame_hdr=yes
2638         fi
2639 fi
2640 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2641         AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2642 [Define if your linker supports --eh-frame-hdr option.])
2643 fi
2644 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2645
2646 AC_MSG_CHECKING(linker position independent executable support)
2647 gcc_cv_ld_pie=no
2648 if test $in_tree_ld = yes ; then
2649   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 && grep 'EMUL = elf' ../ld/Makefile > /dev/null; then
2650     gcc_cv_ld_pie=yes
2651   fi
2652 elif test x$gcc_cv_ld != x; then
2653         # Check if linker supports -pie option
2654         if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2655                 gcc_cv_ld_pie=yes
2656         fi
2657 fi
2658 if test x"$gcc_cv_ld_pie" = xyes; then
2659         AC_DEFINE(HAVE_LD_PIE, 1,
2660 [Define if your linker supports -pie option.])
2661 fi
2662 AC_MSG_RESULT($gcc_cv_ld_pie)
2663
2664 # Miscellaneous target-specific checks.
2665 case "$target" in
2666   mips*-*-*)
2667     AC_MSG_CHECKING(whether libgloss uses STARTUP directives consistently)
2668     gcc_cv_mips_libgloss_startup=no
2669     gcc_cv_libgloss_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/libgloss
2670     if test "x$exec_prefix" = xNONE; then
2671       if test "x$prefix" = xNONE; then
2672         test_prefix=/usr/local
2673       else
2674         test_prefix=$prefix
2675       fi
2676     else
2677       test_prefix=$exec_prefix
2678     fi
2679     for f in $gcc_cv_libgloss_srcdir/mips/idt.ld $test_prefix/$target_alias/lib/idt.ld
2680     do
2681       if grep '^STARTUP' $f > /dev/null 2>&1; then
2682         gcc_cv_mips_libgloss_startup=yes
2683         break
2684       fi
2685     done
2686     if test x"$gcc_cv_mips_libgloss_startup" = xyes; then
2687       AC_DEFINE(HAVE_MIPS_LIBGLOSS_STARTUP_DIRECTIVES, 1,
2688         [Define if your MIPS libgloss linker scripts consistently include STARTUP directives.])
2689     fi
2690     AC_MSG_RESULT($gcc_cv_mips_libgloss_startup)
2691
2692     AC_MSG_CHECKING(whether the assembler has explicit relocation support)
2693     if test x$gcc_cv_mips_explicit_relocs = x; then
2694       gcc_cv_mips_explicit_relocs=no
2695       if test x$gcc_cv_as != x; then
2696         echo '  lw $4,%gp_rel(foo)($4)' > conftest.s
2697         if $gcc_cv_as conftest.s -o conftest.o > /dev/null 2>&1; then
2698           gcc_cv_mips_explicit_relocs=yes
2699         fi
2700         rm -f conftest.s conftest.o
2701       fi
2702     fi
2703     if test $gcc_cv_mips_explicit_relocs = yes; then
2704       test x$target_cpu_default != x || target_cpu_default=0
2705       target_cpu_default="(${target_cpu_default}|MASK_EXPLICIT_RELOCS)"
2706     fi
2707     AC_MSG_RESULT($gcc_cv_mips_explicit_relocs)
2708     ;;
2709 esac
2710
2711 if test x$with_sysroot = x && test x$host = x$target \
2712    && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
2713   AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include")
2714 fi
2715
2716 # Figure out what language subdirectories are present.
2717 # Look if the user specified --enable-languages="..."; if not, use
2718 # the environment variable $LANGUAGES if defined. $LANGUAGES might
2719 # go away some day.
2720 # NB:  embedded tabs in this IF block -- do not untabify
2721 if test x"${enable_languages+set}" != xset; then
2722         if test x"${LANGUAGES+set}" = xset; then
2723                 enable_languages="${LANGUAGES}"
2724                 AC_MSG_WARN([setting LANGUAGES is deprecated, use --enable-languages instead])
2725
2726         else
2727                 enable_languages=all
2728         fi
2729 else
2730         if test x"${enable_languages}" = x \
2731         || test x"${enable_languages}" = xyes;
2732         then
2733                 AC_MSG_ERROR([--enable-languages needs at least one language argument])
2734         fi
2735 fi
2736 enable_languages=`echo "${enable_languages}" | sed -e 's/[[     ,]][[   ,]]*/,/g' -e 's/,$//'`
2737
2738 # First scan to see if an enabled language requires some other language.
2739 # We assume that a given config-lang.in will list all the language
2740 # front ends it requires, even if some are required indirectly.
2741 for lang in ${srcdir}/*/config-lang.in ..
2742 do
2743    case $lang in
2744     ..)
2745        ;;
2746     # The odd quoting in the next line works around
2747     # an apparent bug in bash 1.12 on linux.
2748 changequote(,)dnl
2749     ${srcdir}/[*]/config-lang.in)
2750        ;;
2751     *)
2752        lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^      ]*\).*$,\1,p' $lang`
2753        this_lang_requires=`sed -n -e 's,^lang_requires=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^lang_requires=\([^    ]*\).*$,\1,p' $lang`
2754        for other in $this_lang_requires
2755        do
2756           case ,${enable_languages}, in
2757            *,$other,*)
2758               ;;
2759            *,all,*)
2760               ;;
2761            *,$lang_alias,*)
2762               enable_languages="$enable_languages,$other"
2763               ;;
2764           esac
2765        done
2766        ;;
2767 changequote([,])dnl
2768    esac
2769 done
2770
2771 expected_languages=`echo ,${enable_languages}, | sed -e 's:,: :g' -e 's:  *: :g' -e 's:  *: :g' -e 's:^ ::' -e 's: $::'`
2772 found_languages=
2773 subdirs=
2774 for lang in ${srcdir}/*/config-lang.in ..
2775 do
2776         case $lang in
2777         ..) ;;
2778         # The odd quoting in the next line works around
2779         # an apparent bug in bash 1.12 on linux.
2780 changequote(,)dnl
2781         ${srcdir}/[*]/config-lang.in) ;;
2782         *)
2783           lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
2784           this_lang_libs=`sed -n -e 's,^target_libs=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^target_libs=\([^         ]*\).*$,\1,p' $lang`
2785           build_by_default=`sed -n -e 's,^build_by_default=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^build_by_default=\([^     ]*\).*$,\1,p' $lang`
2786           if test "x$lang_alias" = x
2787           then
2788                 echo "$lang doesn't set \$language." 1>&2
2789                 exit 1
2790           fi
2791           case ${build_by_default},${enable_languages}, in
2792           *,$lang_alias,*) add_this_lang=yes ;;
2793           no,*) add_this_lang=no ;;
2794           *,all,*) add_this_lang=yes ;;
2795           *) add_this_lang=no ;;
2796           esac
2797           found_languages="${found_languages} ${lang_alias}"
2798           if test x"${add_this_lang}" = xyes; then
2799                 case $lang in
2800                     ${srcdir}/ada/config-lang.in)
2801                         if test x$have_gnat = xyes ; then
2802                                 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
2803                         fi
2804                         ;;
2805                     *)
2806                         subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
2807                         ;;
2808                 esac
2809           fi
2810           ;;
2811 changequote([,])dnl
2812         esac
2813 done
2814
2815 missing_languages=
2816 for expected_language in ${expected_languages} ..
2817 do
2818     if test "${expected_language}" != ..; then
2819         missing_language="${expected_language}"
2820         if test "${expected_language}" = "c" \
2821            || test "${expected_language}" = "all"; then
2822                 missing_language=
2823         fi
2824         for found_language in ${found_languages} ..
2825         do
2826             if test "${found_language}" != ..; then
2827                 if test "${expected_language}" = "${found_language}"; then
2828                     missing_language=
2829                 fi
2830             fi
2831         done
2832         if test "x${missing_language}" != x; then
2833            missing_languages="${missing_languages} ${missing_language}"
2834         fi
2835     fi
2836 done
2837
2838 if test "x$missing_languages" != x; then
2839   AC_MSG_ERROR([
2840 The following requested languages were not found:${missing_languages}
2841 The following languages were available: c${found_languages}])
2842 fi
2843
2844 # Make gthr-default.h if we have a thread file.
2845 gthread_flags=
2846 if test $thread_file != single; then
2847     rm -f gthr-default.h
2848     echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
2849     gthread_flags=-DHAVE_GTHR_DEFAULT
2850 fi
2851 AC_SUBST(gthread_flags)
2852
2853 # Find out what GC implementation we want, or may, use.
2854 AC_ARG_WITH(gc,
2855 [  --with-gc={simple,page} choose the garbage collection mechanism to use
2856                           with the compiler],
2857 [case "$withval" in
2858   simple | page)
2859     GGC=ggc-$withval
2860     ;;
2861   *)
2862     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
2863     ;;
2864 esac],
2865 [GGC=ggc-page])
2866 AC_SUBST(GGC)
2867 echo "Using $GGC for garbage collection."
2868
2869 # Use the system's zlib library.
2870 zlibdir=-L../zlib
2871 zlibinc="-I\$(srcdir)/../zlib"
2872 AC_ARG_WITH(system-zlib,
2873 [  --with-system-zlib      use installed libz],
2874 zlibdir=
2875 zlibinc=
2876 )
2877 AC_SUBST(zlibdir)
2878 AC_SUBST(zlibinc)
2879
2880 dnl Very limited version of automake's enable-maintainer-mode
2881
2882 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2883   dnl maintainer-mode is disabled by default
2884   AC_ARG_ENABLE(maintainer-mode,
2885 [  --enable-maintainer-mode
2886                           enable make rules and dependencies not useful
2887                           (and sometimes confusing) to the casual installer],
2888       maintainer_mode=$enableval,
2889       maintainer_mode=no)
2890
2891 AC_MSG_RESULT($maintainer_mode)
2892
2893 if test "$maintainer_mode" = "yes"; then
2894   MAINT=''
2895 else
2896   MAINT='#'
2897 fi
2898 AC_SUBST(MAINT)dnl
2899
2900 # Make empty files to contain the specs and options for each language.
2901 # Then add #include lines to for a compiler that has specs and/or options.
2902
2903 lang_specs_files=
2904 lang_options_files=
2905 lang_tree_files=
2906 for subdir in . $subdirs
2907 do
2908         if test -f $srcdir/$subdir/lang-specs.h; then
2909             lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
2910         fi
2911         if test -f $srcdir/$subdir/lang-options.h; then
2912             lang_options_files="$lang_options_files $srcdir/$subdir/lang-options.h"
2913         fi
2914         if test -f $srcdir/$subdir/$subdir-tree.def; then
2915             lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
2916         fi
2917 done
2918
2919 # These (without "all_") are set in each config-lang.in.
2920 # `language' must be a single word so is spelled singularly.
2921 all_languages=
2922 all_boot_languages=
2923 all_compilers=
2924 all_stagestuff=
2925 all_outputs='Makefile intl/Makefile fixinc/Makefile gccbug mklibgcc mkheaders'
2926 # List of language makefile fragments.
2927 all_lang_makefiles=
2928 # Files for gengtype
2929 all_gtfiles="$target_gtfiles"
2930 # Files for gengtype with language
2931 all_gtfiles_files_langs=
2932 all_gtfiles_files_files=
2933
2934 # Add the language fragments.
2935 # Languages are added via two mechanisms.  Some information must be
2936 # recorded in makefile variables, these are defined in config-lang.in.
2937 # We accumulate them and plug them into the main Makefile.
2938 # The other mechanism is a set of hooks for each of the main targets
2939 # like `clean', `install', etc.
2940
2941 language_fragments="Make-lang"
2942 language_hooks="Make-hooks"
2943
2944 for s in .. $subdirs
2945 do
2946         if test $s != ".."
2947         then
2948                 language=
2949                 boot_language=
2950                 compilers=
2951                 stagestuff=
2952                 outputs=
2953                 gtfiles=
2954                 . ${srcdir}/$s/config-lang.in
2955                 if test "x$language" = x
2956                 then
2957                         echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
2958                         exit 1
2959                 fi
2960                 all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Make-lang.in"
2961                 if test -f ${srcdir}/$s/Makefile.in
2962                 then all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Makefile.in"
2963                 fi
2964                 all_languages="$all_languages $language"
2965                 if test "x$boot_language" = xyes
2966                 then
2967                         all_boot_languages="$all_boot_languages $language"
2968                 fi
2969                 all_compilers="$all_compilers $compilers"
2970                 all_stagestuff="$all_stagestuff $stagestuff"
2971                 all_outputs="$all_outputs $outputs"
2972                 all_gtfiles="$all_gtfiles $gtfiles"
2973                 for f in .. $gtfiles
2974                 do
2975                      if test $f != ".."
2976                      then
2977                          all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
2978                          all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
2979                      fi
2980                 done
2981         fi
2982 done
2983
2984 # Pick up gtfiles for c
2985 gtfiles=
2986 s="c"
2987 . ${srcdir}/c-config-lang.in
2988 all_gtfiles="$all_gtfiles $gtfiles"
2989 for f in .. $gtfiles
2990 do
2991      if test $f != ".."
2992      then
2993         all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
2994         all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
2995      fi
2996 done
2997
2998 check_languages=
2999 for language in .. $all_languages
3000 do
3001         if test $language != ".."
3002         then
3003                 check_languages="$check_languages check-$language"
3004         fi
3005 done
3006
3007 # Since we can't use `::' targets, we link each language in
3008 # with a set of hooks, reached indirectly via lang.${target}.
3009
3010 rm -f Make-hooks
3011 touch Make-hooks
3012 target_list="all.build all.cross start.encap rest.encap tags \
3013         info dvi generated-manpages \
3014         install-normal install-common install-info install-man \
3015         uninstall \
3016         mostlyclean clean distclean extraclean maintainer-clean \
3017         stage1 stage2 stage3 stage4"
3018 for t in $target_list
3019 do
3020         x=
3021         for lang in .. $all_languages
3022         do
3023                 if test $lang != ".."; then
3024                         x="$x $lang.$t"
3025                 fi
3026         done
3027         echo "lang.$t: $x" >> Make-hooks
3028 done
3029
3030 # Create .gdbinit.
3031
3032 echo "dir ." > .gdbinit
3033 echo "dir ${srcdir}" >> .gdbinit
3034 if test x$gdb_needs_out_file_path = xyes
3035 then
3036         echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3037 fi
3038 if test "x$subdirs" != x; then
3039         for s in $subdirs
3040         do
3041                 echo "dir ${srcdir}/$s" >> .gdbinit
3042         done
3043 fi
3044 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3045
3046 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3047 # absolute path for gcc_tooldir based on inserting the number of up-directory
3048 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3049 # $(libsubdir)/@(unlibsubdir) based path.
3050 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3051 # make and thus we'd get different behavior depending on where we built the
3052 # sources.
3053 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3054     gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_alias)'
3055 else
3056 changequote(<<, >>)dnl
3057 # An explanation of the sed strings:
3058 #  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
3059 #  -e 's|/$||'            match a trailing forward slash and eliminates it
3060 #  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
3061 #  -e 's|/[^/]*|../|g'    replaces each occurrence of /<directory> with ../
3062 #
3063 # (*) Note this pattern overwrites the first character of the string
3064 # with a forward slash if one is not already present.  This is not a
3065 # problem because the exact names of the sub-directories concerned is
3066 # unimportant, just the number of them matters.
3067 #
3068 # The practical upshot of these patterns is like this:
3069 #
3070 #  prefix     exec_prefix        result
3071 #  ------     -----------        ------
3072 #   /foo        /foo/bar          ../
3073 #   /foo/       /foo/bar          ../
3074 #   /foo        /foo/bar/         ../
3075 #   /foo/       /foo/bar/         ../
3076 #   /foo        /foo/bar/ugg      ../../
3077 #
3078     dollar='$$'
3079     gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_alias)"
3080 changequote([, ])dnl
3081 fi
3082 AC_SUBST(gcc_tooldir)
3083 AC_SUBST(dollar)
3084
3085 # Find a directory in which to install a shared libgcc.
3086
3087 AC_ARG_ENABLE(version-specific-runtime-libs,
3088 [  --enable-version-specific-runtime-libs
3089                           specify that runtime libraries should be
3090                           installed in a compiler-specific directory])
3091
3092 AC_ARG_WITH(slibdir,
3093 [  --with-slibdir=DIR      shared libraries in DIR [LIBDIR]],
3094 slibdir="$with_slibdir",
3095 if test "${enable_version_specific_runtime_libs+set}" = set; then
3096   slibdir='$(libsubdir)'
3097 elif test "$host" != "$target"; then
3098   slibdir='$(build_tooldir)/lib'
3099 else
3100   slibdir='$(libdir)'
3101 fi)
3102 AC_SUBST(slibdir)
3103
3104 objdir=`${PWDCMD-pwd}`
3105 AC_SUBST(objdir)
3106
3107 # Process the language and host/target makefile fragments.
3108 ${CONFIG_SHELL-/bin/sh} $srcdir/configure.frag $srcdir "$subdirs" "$dep_host_xmake_file" "$dep_tmake_file"
3109
3110 # Substitute configuration variables
3111 AC_SUBST(subdirs)
3112 AC_SUBST(srcdir)
3113 AC_SUBST(all_boot_languages)
3114 AC_SUBST(all_compilers)
3115 AC_SUBST(all_gtfiles)
3116 AC_SUBST(all_gtfiles_files_langs)
3117 AC_SUBST(all_gtfiles_files_files)
3118 AC_SUBST(all_lang_makefiles)
3119 AC_SUBST(all_languages)
3120 AC_SUBST(all_stagestuff)
3121 AC_SUBST(build_exeext)
3122 AC_SUBST(build_install_headers_dir)
3123 AC_SUBST(build_xm_file_list)
3124 AC_SUBST(build_xm_file)
3125 AC_SUBST(build_xm_defines)
3126 AC_SUBST(check_languages)
3127 AC_SUBST(cc_set_by_configure)
3128 AC_SUBST(quoted_cc_set_by_configure)
3129 AC_SUBST(cpp_install_dir)
3130 AC_SUBST(dep_host_xmake_file)
3131 AC_SUBST(dep_tmake_file)
3132 AC_SUBST(extra_headers_list)
3133 AC_SUBST(extra_objs)
3134 AC_SUBST(extra_parts)
3135 AC_SUBST(extra_passes)
3136 AC_SUBST(extra_programs)
3137 AC_SUBST(float_h_file)
3138 AC_SUBST(gcc_config_arguments)
3139 AC_SUBST(gcc_gxx_include_dir)
3140 AC_SUBST(libstdcxx_incdir)
3141 AC_SUBST(gcc_version)
3142 AC_SUBST(gcc_version_full)
3143 AC_SUBST(gcc_version_trigger)
3144 AC_SUBST(host_exeext)
3145 AC_SUBST(host_extra_gcc_objs)
3146 AC_SUBST(host_xm_file_list)
3147 AC_SUBST(host_xm_file)
3148 AC_SUBST(host_xm_defines)
3149 AC_SUBST(out_host_hook_obj)
3150 AC_SUBST(install)
3151 AC_SUBST(lang_options_files)
3152 AC_SUBST(lang_specs_files)
3153 AC_SUBST(lang_tree_files)
3154 AC_SUBST(local_prefix)
3155 AC_SUBST(md_file)
3156 AC_SUBST(objc_boehm_gc)
3157 AC_SUBST(out_file)
3158 AC_SUBST(out_object_file)
3159 AC_SUBST(stage_prefix_set_by_configure)
3160 AC_SUBST(quoted_stage_prefix_set_by_configure)
3161 AC_SUBST(symbolic_link)
3162 AC_SUBST(thread_file)
3163 AC_SUBST(tm_file_list)
3164 AC_SUBST(tm_file)
3165 AC_SUBST(tm_defines)
3166 AC_SUBST(tm_p_file_list)
3167 AC_SUBST(tm_p_file)
3168 AC_SUBST(xm_file)
3169 AC_SUBST(xm_defines)
3170 AC_SUBST(target_alias)
3171 AC_SUBST(c_target_objs)
3172 AC_SUBST(cxx_target_objs)
3173 AC_SUBST(target_cpu_default)
3174
3175 AC_SUBST_FILE(target_overrides)
3176 AC_SUBST_FILE(host_overrides)
3177 AC_SUBST_FILE(language_fragments)
3178 AC_SUBST_FILE(language_hooks)
3179
3180 # Echo that links are built
3181 if test x$host = x$target
3182 then
3183         str1="native "
3184 else
3185         str1="cross-"
3186         str2=" from $host"
3187 fi
3188
3189 if test x$host != x$build
3190 then
3191         str3=" on a $build system"
3192 fi
3193
3194 if test "x$str2" != x || test "x$str3" != x
3195 then
3196         str4=
3197 fi
3198
3199 echo "Links are now set up to build a ${str1}compiler for ${target}$str4" 1>&2
3200
3201 if test "x$str2" != x || test "x$str3" != x
3202 then
3203         echo " ${str2}${str3}." 1>&2
3204 fi
3205
3206 # Truncate the target if necessary
3207 if test x$host_truncate_target != x; then
3208         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
3209 fi
3210
3211 # Configure the subdirectories
3212 # AC_CONFIG_SUBDIRS($subdirs)
3213
3214 # Create the Makefile
3215 # and configure language subdirectories
3216 AC_OUTPUT($all_outputs,
3217 [
3218 case x$CONFIG_HEADERS in
3219 xauto-host.h:config.in)
3220 echo > cstamp-h ;;
3221 esac
3222 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3223 # bootstrapping and the installation procedure can still use
3224 # CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
3225 # FLAGS_TO_PASS has been modified to solve the problem there.
3226 # This is virtually a duplicate of what happens in configure.lang; we do
3227 # an extra check to make sure this only happens if ln -s can be used.
3228 if test "$symbolic_link" = "ln -s"; then
3229  for d in .. ${subdirs} fixinc ; do
3230    if test $d != ..; then
3231         STARTDIR=`${PWDCMD-pwd}`
3232         cd $d
3233         for t in stage1 stage2 stage3 stage4 include
3234         do
3235                 rm -f $t
3236                 $symbolic_link ../$t $t 2>/dev/null
3237         done
3238         cd $STARTDIR
3239    fi
3240  done
3241 else true ; fi
3242 # Avoid having to add intl to our include paths.
3243 if test -f intl/libintl.h; then
3244   echo creating libintl.h
3245   echo '#include "intl/libintl.h"' >libintl.h
3246 fi
3247 ],
3248 [subdirs='$subdirs'
3249 symbolic_link='$symbolic_link'
3250 ])