gdb/configure.in

   1 dnl Autoconf configure script for GDB, the GNU debugger.
   2 dnl Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
   3 dnl Free Software Foundation, Inc.
   4 dnl
   5 dnl This file is part of GDB.
   6 dnl
   7 dnl This program is free software; you can redistribute it and/or modify
   8 dnl it under the terms of the GNU General Public License as published by
   9 dnl the Free Software Foundation; either version 2 of the License, or
  10 dnl (at your option) any later version.
  11 dnl
  12 dnl This program is distributed in the hope that it will be useful,
  13 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 dnl GNU General Public License for more details.
  16 dnl
  17 dnl You should have received a copy of the GNU General Public License
  18 dnl along with this program; if not, write to the Free Software
  19 dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20
  21 dnl Process this file with autoconf to produce a configure script.
  22
  23 AC_PREREQ(2.13)dnl
  24 AC_INIT(main.c)
  25 AC_CONFIG_HEADER(config.h:config.in)
  26 AM_MAINTAINER_MODE
  27
  28 AC_PROG_CC
  29 AC_GNU_SOURCE
  30 AC_AIX
  31 AC_ISC_POSIX
  32 AM_PROG_CC_STDC
  33
  34 AC_CONFIG_AUX_DIR(`cd $srcdir;pwd`/..)
  35 AC_CANONICAL_SYSTEM
  36
  37 # FIXME: kettenis/20030102: The AC_PROG_RANLIB from Autoconf 2.13
  38 # doesn't support cross-compilation, but the one from Autoconf 2.5x
  39 # does.  Override RANLIB here (i.e. before running AC_PROG_RANLIB) to
  40 # deal with the lossage.  Note that CY_GNU_GETTEXT currently calls
  41 # AC_PROG_RANLIB.  This can be removed when we switch to Autoconf
  42 # 2.5x.
  43 AC_CHECK_TOOL(RANLIB, ranlib, :)
  44
  45 dnl Set up for gettext.  PACKAGE is used when we call bindtextdomain.
  46 ALL_LINGUAS=
  47 CY_GNU_GETTEXT
  48 AC_DEFINE(PACKAGE, "gdb", [Name of this package. ])
  49
  50 debugdir=${libdir}/debug
  51
  52 AC_ARG_WITH(separate-debug-dir,
  53 [  --with-separate-debug-dir=path   Look for global separate debug info in this path [LIBDIR/debug]],
  54 [debugdir="${withval}"])
  55
  56 AC_DEFINE_DIR(DEBUGDIR, debugdir,
  57               [Global directory for separate debug files. ])
  58 #AC_DEFINE_UNQUOTED(DEBUGDIR, "$debugdir"),
  59
  60 dnl List of object files added by configure.
  61
  62 CONFIG_OBS=
  63 CONFIG_DEPS=
  64 CONFIG_SRCS=
  65 ENABLE_CFLAGS=
  66 CONFIG_ALL=
  67 CONFIG_CLEAN=
  68 CONFIG_INSTALL=
  69 CONFIG_UNINSTALL=
  70
  71 AC_CONFIG_SUBDIRS(doc testsuite)
  72 configdirs=
  73
  74 . $srcdir/configure.host
  75
  76 . $srcdir/configure.tgt
  77
  78 # Fetch the default architecture and default target vector from BFD.
  79 targ=$target; . $srcdir/../bfd/config.bfd
  80
  81 # We only want the first architecture, so strip off the others if
  82 # there is more than one.
  83 targ_archs=`echo $targ_archs | sed 's/ .*//'`
  84
  85 if test "x$targ_archs" != x; then
  86   AC_DEFINE_UNQUOTED(DEFAULT_BFD_ARCH, $targ_archs,
  87     [Define to BFD's default architecture. ])
  88 fi
  89 if test "x$targ_defvec" != x; then
  90   AC_DEFINE_UNQUOTED(DEFAULT_BFD_VEC, $targ_defvec,
  91     [Define to BFD's default target vector. ])
  92 fi
  93
  94 AC_ARG_PROGRAM
  95
  96 # The CLI cannot be disabled yet, but may be in the future.
  97
  98 # Enable CLI.
  99 AC_ARG_ENABLE(gdbcli,
 100 [  --disable-gdbcli        disable command-line interface (CLI)],
 101   [case $enableval in
 102     yes)
 103       ;;
 104     no)
 105       AC_MSG_ERROR([the command-line interface cannot be disabled yet]) ;;
 106     *)
 107       AC_MSG_ERROR([bad value $enableval for --enable-gdbcli]) ;;
 108   esac],
 109   [enable_gdbcli=yes])
 110 if test x"$enable_gdbcli" = xyes; then
 111   if test -d $srcdir/cli; then
 112     CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_CLI_OBS)"
 113     CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_CLI_DEPS)"
 114     CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_CLI_SRCS)"
 115     ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_CLI_CFLAGS)"
 116   fi
 117 fi
 118
 119 # Enable MI.
 120 AC_ARG_ENABLE(gdbmi,
 121 [  --disable-gdbmi         disable machine-interface (MI)],
 122   [case $enableval in
 123     yes | no)
 124       ;;
 125     *)
 126       AC_MSG_ERROR([bad value $enableval for --enable-gdbmi]) ;;
 127   esac],
 128   [enable_gdbmi=yes])
 129 if test x"$enable_gdbmi" = xyes; then
 130   if test -d $srcdir/mi; then
 131     CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_MI_OBS)"
 132     CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_MI_DEPS)"
 133     CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_MI_SRCS)"
 134     ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_MI_CFLAGS)"
 135   fi
 136 fi
 137
 138 # Enable TUI.
 139 AC_ARG_ENABLE(tui,
 140 [  --enable-tui            enable full-screen terminal user interface (TUI)],
 141   [case $enableval in
 142     yes | no)
 143       ;;
 144     *)
 145       AC_MSG_ERROR([bad value $enableval for --enable-tui]) ;;
 146   esac],enable_tui=yes)
 147 if test x"$enable_tui" = xyes; then
 148   if test -d $srcdir/tui; then
 149     if test "$ac_cv_search_initscr" != no -a "$ac_cv_search_wborder" != no; then
 150       CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_TUI_OBS)"
 151       CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_TUI_DEPS)"
 152       CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_TUI_SRCS)"
 153       CONFIG_INITS="$CONFIG_INITS \$(SUBDIR_TUI_INITS)"
 154       ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_TUI_CFLAGS)"
 155       CONFIG_ALL="${CONFIG_ALL} all-tui"
 156       CONFIG_CLEAN="${CONFIG_CLEAN} clean-tui"
 157       CONFIG_INSTALL="${CONFIG_INSTALL} install-tui"
 158       CONFIG_UNINSTALL="${CONFIG_UNINSTALL} uninstall-tui"
 159     fi
 160   fi
 161 fi
 162
 163 # Enable gdbtk.
 164 AC_ARG_ENABLE(gdbtk,
 165 [  --enable-gdbtk          enable gdbtk graphical user interface (GUI)],
 166   [case $enableval in
 167     yes | no)
 168       ;;
 169     *)
 170       AC_MSG_ERROR([bad value $enableval for --enable-gdbtk]) ;;
 171   esac],
 172   [if test -d $srcdir/gdbtk; then
 173     enable_gdbtk=yes
 174   else
 175     enable_gdbtk=no
 176   fi])
 177 # We unconditionally disable gdbtk tests on selected platforms.
 178 case $host_os in
 179   go32* | windows*)
 180     AC_MSG_WARN([gdbtk isn't supported on $host; disabling])
 181     enable_gdbtk=no ;;
 182 esac
 183
 184 # Libunwind support.
 185 AC_ARG_WITH(libunwind,
 186 [  --with-libunwind            Use libunwind frame unwinding support],
 187 [case "${withval}" in
 188   yes)  enable_libunwind=yes ;;
 189   no)   enable_libunwind=no ;;
 190   *)    AC_MSG_ERROR(bad value ${withval} for GDB with-libunwind option) ;;
 191 esac],[
 192   AC_CHECK_HEADERS(libunwind.h)
 193   AC_CHECK_HEADERS(libunwind-ia64.h)
 194   if test x"$ac_cv_header_libunwind_h" = xyes -a x"$ac_cv_header_libunwind_ia64_h" = xyes; then
 195     enable_libunwind=yes;
 196   fi
 197 ])
 198
 199 if test x"$enable_libunwind" = xyes; then
 200   AC_CHECK_HEADERS(libunwind.h)
 201   AC_CHECK_HEADERS(libunwind-ia64.h)
 202   AC_DEFINE(HAVE_LIBUNWIND, 1)
 203   CONFIG_OBS="$CONFIG_OBS libunwind-frame.o"
 204   CONFIG_DEPS="$CONFIG_DEPS libunwind-frame.o"
 205   CONFIG_SRCS="$CONFIG_SRCS libunwind-frame.c"
 206 fi
 207
 208 # Profiling support.
 209 AC_ARG_ENABLE(profiling,
 210 [  --enable-profiling      enable profiling of GDB],
 211   [case $enableval in
 212     yes | no)
 213       ;;
 214     *)
 215       AC_MSG_ERROR([bad value $enableval for --enable-profile]) ;;
 216   esac],
 217  [enable_profiling=no])
 218
 219 AC_CHECK_FUNCS(monstartup _mcleanup)
 220 AC_CACHE_CHECK([for _etext], ac_cv_var__etext,
 221 [AC_TRY_LINK(
 222 [#include <stdlib.h>
 223 extern char _etext;
 224 ],
 225 [free (&_etext);], ac_cv_var__etext=yes, ac_cv_var__etext=no)])
 226 if test $ac_cv_var__etext = yes; then
 227   AC_DEFINE(HAVE__ETEXT, 1,
 228             [Define to 1 if your system has the _etext variable. ])
 229 fi
 230 if test "$enable_profiling" = yes ; then
 231   if test $ac_cv_func_monstartup = no || test $ac_cv_func__mcleanup = no; then
 232     AC_MSG_ERROR(--enable-profiling requires monstartup and _mcleanup)
 233   fi
 234   PROFILE_CFLAGS=-pg
 235   OLD_CFLAGS="$CFLAGS"
 236   CFLAGS="$CFLAGS $PROFILE_CFLAGS"
 237
 238   AC_CACHE_CHECK([whether $CC supports -pg], ac_cv_cc_supports_pg,
 239     [AC_TRY_COMPILE([], [int x;], ac_cv_cc_supports_pg=yes,
 240      ac_cv_cc_supports_pg=no)])
 241
 242   if test $ac_cv_cc_supports_pg = no; then
 243     AC_MSG_ERROR(--enable-profiling requires a compiler which supports -pg)
 244   fi
 245
 246   CFLAGS="$OLD_CFLAGS"
 247 fi
 248
 249 # --------------------- #
 250 # Checks for programs.  #
 251 # --------------------- #
 252
 253 AC_PROG_AWK
 254 AC_PROG_INSTALL
 255 AC_PROG_LN_S
 256 AC_PROG_RANLIB
 257 AC_PROG_YACC
 258
 259 AC_CHECK_TOOL(AR, ar)
 260 AC_CHECK_TOOL(DLLTOOL, dlltool)
 261 AC_CHECK_TOOL(WINDRES, windres)
 262
 263 # Needed for GNU/Hurd.
 264 AC_CHECK_TOOL(MIG, mig)
 265
 266 # ---------------------- #
 267 # Checks for libraries.  #
 268 # ---------------------- #
 269
 270 # We might need to link with -lm; most simulators need it.
 271 AC_CHECK_LIB(m, main)
 272
 273 # We need to link with -lw to get `wctype' on Solaris before Solaris
 274 # 2.6.  Solaris 2.6 and beyond have this function in libc, and have a
 275 # libw that some versions of the GNU linker cannot hanle (GNU ld 2.9.1
 276 # is known to have this problem).  Therefore we avoid libw if we can.
 277 AC_CHECK_FUNC(wctype, [],
 278   [AC_CHECK_LIB(w, wctype)])
 279
 280 # Some systems (e.g. Solaris) have `gethostbyname' in libnsl.
 281 AC_SEARCH_LIBS(gethostbyname, nsl)
 282
 283 # Some systems (e.g. Solaris) have `socketpair' in libsocket.
 284 AC_SEARCH_LIBS(socketpair, socket)
 285
 286 # Since GDB uses Readline, we need termcap functionality, so we need
 287 # to find a library that provides that.  When GDB is configured with
 288 # the TUI, we need full curses functionality.
 289
 290 case $host_os in
 291   cygwin*)
 292     if test -d $srcdir/libtermcap; then
 293       LIBS="../libtermcap/libtermcap.a $LIBS"
 294       ac_cv_search_tgetent="../libtermcap/libtermcap.a"
 295     fi ;;
 296   go32* | *djgpp*)
 297     ac_cv_search_tgetent="none required"
 298     ;;
 299   aix*)
 300     # Readline prefers curses over termcap on AIX.
 301     # ??? Why?
 302     AC_SEARCH_LIBS(tgetent, [tinfo ncurses curses termcap])
 303     ;;
 304 esac
 305
 306 # Note: We used to check for libtermlib and libterminfo too, but
 307 # Readline doesn't, so I think we're safe with leaving them out.
 308 AC_SEARCH_LIBS(tgetent, [termcap tinfo ncurses Hcurses curses])
 309
 310 if test "$ac_cv_search_tgetent" = no; then
 311   AC_MSG_ERROR([no termcap library found])
 312 fi
 313
 314 # FIXME: kettenis/20030102: We seem to prefer HP curses (Hcurses) over
 315 # Xcurses on HP-UX; see the `-D__HP_CURSES' in the relevant host
 316 # Makefile fragments.  That's why we need to have `Hcurses' before
 317 # `curses'.  I don't see why we should use HP curses if a more
 318 # standard curses is available, except that according to HP's
 319 # documentation one needs to compile `-D_XOPEN_SOURCE_EXTENDED' on
 320 # HP-UX 10.10 and 10.20.
 321
 322 case $host_os in
 323   osf5.*)
 324     # ncurses does not work on native alphaev68-dec-osf5.1
 325     # -- chastain 2004-04-24
 326     AC_SEARCH_LIBS(initscr, [curses], [],
 327       [AC_MSG_WARN([no curses library found])])
 328     ;;
 329   *)
 330     AC_SEARCH_LIBS(initscr, [ncurses Hcurses curses pdcurses], [],
 331       [AC_MSG_WARN([no curses library found])])
 332     ;;
 333 esac
 334
 335 # Check whether the wborder function is provided by the curses
 336 # library detected above.  In certain implementations such as
 337 # the HP/UX Hcurses for instance, this function is provided by an
 338 # additional library.  So if we did not find this function inside
 339 # the curses library, try some alternate libraries we know might
 340 # provide it.
 341 AC_SEARCH_LIBS(wborder, [cur_colr], [],
 342     [AC_MSG_WARN([wborder function not found, tui will be disabled])])
 343
 344 # ------------------------- #
 345 # Checks for header files.  #
 346 # ------------------------- #
 347
 348 AC_HEADER_DIRENT
 349 AC_HEADER_STAT
 350 AC_HEADER_STDC
 351 AC_CHECK_HEADERS(link.h)
 352 AC_CHECK_HEADERS(machine/reg.h)
 353 AC_CHECK_HEADERS(nlist.h)
 354 AC_CHECK_HEADERS(poll.h sys/poll.h)
 355 AC_CHECK_HEADERS(proc_service.h thread_db.h gnu/libc-version.h)
 356 AC_CHECK_HEADERS(stddef.h)
 357 AC_CHECK_HEADERS(stdlib.h)
 358 AC_CHECK_HEADERS(stdint.h)
 359 AC_CHECK_HEADERS(string.h memory.h strings.h)
 360 AC_CHECK_HEADERS(sys/fault.h)
 361 AC_CHECK_HEADERS(sys/file.h)
 362 AC_CHECK_HEADERS(sys/filio.h)
 363 AC_CHECK_HEADERS(sys/ioctl.h)
 364 AC_CHECK_HEADERS(sys/param.h)
 365 AC_CHECK_HEADERS(sys/proc.h)
 366 AC_CHECK_HEADERS(sys/procfs.h)
 367 AC_CHECK_HEADERS(sys/ptrace.h ptrace.h)
 368 AC_CHECK_HEADERS(sys/reg.h sys/debugreg.h)
 369 AC_CHECK_HEADERS(sys/select.h)
 370 AC_CHECK_HEADERS(sys/syscall.h)
 371 AC_CHECK_HEADERS(sys/user.h)
 372 AC_CHECK_HEADERS(sys/wait.h wait.h)
 373 AC_CHECK_HEADERS(termios.h termio.h sgtty.h)
 374 AC_CHECK_HEADERS(unistd.h)
 375
 376 # On Solaris 2.[78], we need to define _MSE_INT_H to avoid a clash
 377 # between <widec.h> and <wchar.h> that would cause AC_CHECK_HEADERS to
 378 # think that we don't have <curses.h> if we're using GCC.
 379 case $host_os in
 380   solaris2.[[78]])
 381     if test "$GCC" = yes; then
 382       AC_DEFINE(_MSE_INT_H, 1,
 383         [[Define to 1 to avoid a clash between <widec.h> and <wchar.h> on
 384    Solaris 2.[78] when using GCC. ]])
 385     fi ;;
 386 esac
 387 AC_CHECK_HEADERS(curses.h ncurses.h term.h)
 388
 389 # FIXME: kettenis/20030102: In most cases we include these
 390 # unconditionally, so what's the point in checking these?
 391 AC_CHECK_HEADERS(ctype.h time.h)
 392
 393 dnl Check for struct stat with an st_blocks member
 394 AC_MSG_CHECKING(for member st_blocks in struct stat)
 395 AC_CACHE_VAL(gdb_cv_have_struct_stat_with_st_blocks_member,
 396   [AC_TRY_COMPILE([#include <sys/types.h>
 397 #include <sys/stat.h>],
 398                   [struct stat st; (void) st.st_blocks;],
 399                   gdb_cv_have_struct_stat_with_st_blocks_member=yes,
 400                   gdb_cv_have_struct_stat_with_st_blocks_member=no)])
 401 AC_MSG_RESULT($gdb_cv_have_struct_stat_with_st_blocks_member)
 402 if test $gdb_cv_have_struct_stat_with_st_blocks_member = yes; then
 403   AC_DEFINE(HAVE_STRUCT_STAT_ST_BLOCKS)
 404 fi
 405 # ------------------------- #
 406 # Checks for declarations.  #
 407 # ------------------------- #
 408
 409 gcc_AC_CHECK_DECLS(getopt)
 410
 411 # ------------------ #
 412 # Checks for types.  #
 413 # ------------------ #
 414
 415 AC_TYPE_SIGNAL
 416
 417 # ------------------------------------- #
 418 # Checks for compiler characteristics.  #
 419 # ------------------------------------- #
 420
 421 AC_C_CONST
 422 AC_C_INLINE
 423
 424 # ------------------------------ #
 425 # Checks for library functions.  #
 426 # ------------------------------ #
 427
 428 AC_FUNC_ALLOCA
 429 AC_FUNC_MMAP
 430 AC_FUNC_VFORK
 431 AC_CHECK_FUNCS(canonicalize_file_name realpath)
 432 AC_CHECK_FUNCS(poll)
 433 AC_CHECK_FUNCS(pread64)
 434 AC_CHECK_FUNCS(sbrk)
 435 AC_CHECK_FUNCS(setpgid setpgrp)
 436 AC_CHECK_FUNCS(sigaction sigprocmask sigsetmask)
 437 AC_CHECK_FUNCS(socketpair)
 438 AC_CHECK_FUNCS(syscall)
 439
 440 dnl AC_FUNC_SETPGRP does not work when cross compiling
 441 dnl Instead, assume we will have a prototype for setpgrp if cross compiling.
 442 if test "$cross_compiling" = no; then
 443   AC_FUNC_SETPGRP
 444 else
 445   AC_CACHE_CHECK([whether setpgrp takes no argument], ac_cv_func_setpgrp_void,
 446     [AC_TRY_COMPILE([
 447 #include <unistd.h>
 448 ], [
 449   if (setpgrp(1,1) == -1)
 450     exit (0);
 451   else
 452     exit (1);
 453 ], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes)])
 454 if test $ac_cv_func_setpgrp_void = yes; then
 455   AC_DEFINE(SETPGRP_VOID, 1)
 456 fi
 457 fi
 458
 459 # Check if sigsetjmp is available.  Using AC_CHECK_FUNCS won't do
 460 # since sigsetjmp might only be defined as a macro.
 461 AC_CACHE_CHECK([for sigsetjmp], gdb_cv_func_sigsetjmp,
 462 [AC_TRY_COMPILE([
 463 #include <setjmp.h>
 464 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
 465 gdb_cv_func_sigsetjmp=yes, gdb_cv_func_sigsetjmp=no)])
 466 if test $gdb_cv_func_sigsetjmp = yes; then
 467   AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
 468 fi
 469
 470 # Assume we'll default to using the included libiberty regex.
 471 gdb_use_included_regex=yes
 472
 473 # However, if the system regex is GNU regex, then default to *not*
 474 # using the included regex.
 475 AC_CACHE_CHECK(
 476   [for GNU regex],
 477   [gdb_cv_have_gnu_regex],
 478   [AC_TRY_COMPILE(
 479     [#include <gnu-versions.h>],
 480     [#define REGEX_INTERFACE_VERSION 1
 481 #if _GNU_REGEX_INTERFACE_VERSION != REGEX_INTERFACE_VERSION
 482 # error "Version mismatch"
 483 #endif],
 484     gdb_cv_have_gnu_regex=yes,
 485     gdb_cv_have_gnu_regex=no)])
 486 if test $gdb_cv_have_gnu_regex = yes; then
 487   gdb_use_included_regex=no
 488 fi
 489
 490 AC_ARG_WITH(included-regex,
 491   [  --without-included-regex don't use included regex; this is the default
 492                           on systems with version 2 of the GNU C library
 493                           (use with caution on other system)],
 494   gdb_with_regex=$withval,
 495   gdb_with_regex=$gdb_use_included_regex)
 496 if test "$gdb_with_regex" = yes; then
 497   AC_DEFINE(USE_INCLUDED_REGEX, 1,
 498     [Define to 1 if the regex included in libiberty should be used.])
 499 fi
 500
 501 # See if <machine/reg.h> degines `struct reg'.
 502 AC_CACHE_CHECK([for struct reg in machine/reg.h], gdb_cv_struct_reg,
 503 [AC_TRY_COMPILE([#include <sys/types.h>
 504 #include <machine/reg.h>], [struct reg r;],
 505 gdb_cv_struct_reg=yes, gdb_cv_struct_reg=no)])
 506 if test $gdb_cv_struct_reg = yes; then
 507   AC_DEFINE(HAVE_STRUCT_REG, 1,
 508             [Define to 1 if your system has struct reg in <machine/reg.h>.])
 509 fi
 510
 511 # See if <machine/reg.h> supports the %fs and %gs i386 segment registers.
 512 # Older i386 BSD's don't have the r_fs and r_gs members of `struct reg'.
 513 AC_CACHE_CHECK([for r_fs in struct reg], gdb_cv_struct_reg_r_fs,
 514 [AC_TRY_COMPILE([#include <machine/reg.h>], [struct reg r; r.r_fs;],
 515 gdb_cv_struct_reg_r_fs=yes, gdb_cv_struct_reg_r_fs=no)])
 516 if test $gdb_cv_struct_reg_r_fs = yes; then
 517   AC_DEFINE(HAVE_STRUCT_REG_R_FS)
 518 fi
 519 AC_CACHE_CHECK([for r_gs in struct reg], gdb_cv_struct_reg_r_gs,
 520 [AC_TRY_COMPILE([#include <machine/reg.h>], [struct reg r; r.r_gs;],
 521 gdb_cv_struct_reg_r_gs=yes, gdb_cv_struct_reg_r_gs=no)])
 522 if test $gdb_cv_struct_reg_r_gs = yes; then
 523   AC_DEFINE(HAVE_STRUCT_REG_R_GS)
 524 fi
 525
 526 # See if <sys/ptrace.h> provides the PTRACE_GETREGS request.
 527 AC_MSG_CHECKING(for PTRACE_GETREGS)
 528 AC_CACHE_VAL(gdb_cv_have_ptrace_getregs,
 529 [AC_TRY_COMPILE([#include <sys/ptrace.h>],
 530                 [PTRACE_GETREGS;],
 531                 [gdb_cv_have_ptrace_getregs=yes],
 532                 [gdb_cv_have_ptrace_getregs=no])])
 533 AC_MSG_RESULT($gdb_cv_have_ptrace_getregs)
 534 if test $gdb_cv_have_ptrace_getregs = yes; then
 535   AC_DEFINE(HAVE_PTRACE_GETREGS)
 536 fi
 537
 538 # See if <sys/ptrace.h> provides the PTRACE_GETFPXREGS request.
 539 AC_MSG_CHECKING(for PTRACE_GETFPXREGS)
 540 AC_CACHE_VAL(gdb_cv_have_ptrace_getfpxregs,
 541 [AC_TRY_COMPILE([#include <sys/ptrace.h>],
 542                 [PTRACE_GETFPXREGS;],
 543                 [gdb_cv_have_ptrace_getfpxregs=yes],
 544                 [gdb_cv_have_ptrace_getfpxregs=no])])
 545 AC_MSG_RESULT($gdb_cv_have_ptrace_getfpxregs)
 546 if test $gdb_cv_have_ptrace_getfpxregs = yes; then
 547   AC_DEFINE(HAVE_PTRACE_GETFPXREGS)
 548 fi
 549
 550 # See if <sys/ptrace.h> provides the PT_GETDBREGS request.
 551 AC_MSG_CHECKING(for PT_GETDBREGS)
 552 AC_CACHE_VAL(gdb_cv_have_pt_getdbregs,
 553 [AC_TRY_COMPILE([#include <sys/types.h>
 554 #include <sys/ptrace.h>],
 555                 [PT_GETDBREGS;],
 556                 [gdb_cv_have_pt_getdbregs=yes],
 557                 [gdb_cv_have_pt_getdbregs=no])])
 558 AC_MSG_RESULT($gdb_cv_have_pt_getdbregs)
 559 if test $gdb_cv_have_pt_getdbregs = yes; then
 560   AC_DEFINE(HAVE_PT_GETDBREGS)
 561 fi
 562
 563 # See if <sys/ptrace.h> provides the PT_GETXMMREGS request.
 564 AC_MSG_CHECKING(for PT_GETXMMREGS)
 565 AC_CACHE_VAL(gdb_cv_have_pt_getxmmregs,
 566 [AC_TRY_COMPILE([#include <sys/types.h>
 567 #include <sys/ptrace.h>],
 568                 [PT_GETXMMREGS;],
 569                 [gdb_cv_have_pt_getxmmregs=yes],
 570                 [gdb_cv_have_pt_getxmmregs=no])])
 571 AC_MSG_RESULT($gdb_cv_have_pt_getxmmregs)
 572 if test $gdb_cv_have_pt_getxmmregs = yes; then
 573   AC_DEFINE(HAVE_PT_GETXMMREGS)
 574 fi
 575
 576 # See if stdint.h provides the uintptr_t type.
 577 # Autoconf 2.5X has an improved AC_CHECK_TYPE which will simplify this.
 578 AC_CACHE_CHECK([for uintptr_t in stdint.h], gdb_cv_have_uintptr_t,
 579   [AC_TRY_COMPILE(
 580     [#include <stdint.h>],
 581     [uintptr_t foo = 0;],
 582     gdb_cv_have_uintptr_t=yes,
 583     gdb_cv_have_uintptr_t=no)])
 584 if test $gdb_cv_have_uintptr_t = yes; then
 585   AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if <stdint.h> provides the uintptr_t type.])
 586 fi
 587
 588 BFD_NEED_DECLARATION(malloc)
 589 BFD_NEED_DECLARATION(realloc)
 590 BFD_NEED_DECLARATION(free)
 591 BFD_NEED_DECLARATION(strerror)
 592 BFD_NEED_DECLARATION(strdup)
 593 BFD_NEED_DECLARATION(strstr)
 594 BFD_NEED_DECLARATION(canonicalize_file_name)
 595
 596 # The following save_state_t checkery is only necessary for HPUX
 597 # versions earlier than 10.20.  When those fade from memory, this
 598 # could be expunged. --jsm 1999-03-22
 599
 600 AC_MSG_CHECKING(for HPUX save_state structure)
 601 AC_EGREP_HEADER(save_state_t, machine/save_state.h,
 602                 gdb_cv_hpux_savestate=yes, gdb_cv_hpux_savestate=no)
 603 AC_EGREP_HEADER(ss_wide, machine/save_state.h, gdb_cv_hpux_sswide=yes,
 604                 gdb_cv_hpux_sswide=no)
 605 if test $gdb_cv_hpux_savestate = yes
 606 then
 607   AC_DEFINE(HAVE_STRUCT_SAVE_STATE_T, 1)
 608 fi
 609 if test $gdb_cv_hpux_sswide = yes
 610 then
 611   AC_DEFINE(HAVE_STRUCT_MEMBER_SS_WIDE, 1)
 612 fi
 613 AC_MSG_RESULT($gdb_cv_hpux_sswide)
 614
 615
 616 # If we are configured native on GNU/Linux, work around problems with
 617 # sys/procfs.h
 618 # Also detect which type of /proc is in use, such as for Unixware or Solaris.
 619
 620 if test "${target}" = "${host}"; then
 621   case "${host}" in
 622   i[[3456]]86-*-linux*)
 623         AC_DEFINE(START_INFERIOR_TRAPS_EXPECTED,2)
 624         AC_DEFINE(sys_quotactl)
 625         ;;
 626   ia64-*-aix*)
 627       AC_DEFINE(NEW_PROC_API)
 628       ;;
 629   *-*-unixware* | *-*-sysv4.2* | *-*-sysv5* | *-*-interix* )
 630       AC_DEFINE(NEW_PROC_API)
 631       ;;
 632   *-*-solaris2.[[6789]])
 633       AC_DEFINE(NEW_PROC_API)
 634       ;;
 635   mips-sgi-irix5*)
 636       # Work around <sys/proc.h> needing _KMEMUSER problem on IRIX 5.
 637       AC_DEFINE([_KMEMUSER], 1)
 638       ;;
 639   esac
 640 fi
 641
 642 if test "$ac_cv_header_sys_procfs_h" = yes; then
 643   BFD_HAVE_SYS_PROCFS_TYPE(pstatus_t)
 644   BFD_HAVE_SYS_PROCFS_TYPE(prrun_t)
 645   BFD_HAVE_SYS_PROCFS_TYPE(gregset_t)
 646   BFD_HAVE_SYS_PROCFS_TYPE(fpregset_t)
 647   BFD_HAVE_SYS_PROCFS_TYPE(prgregset_t)
 648   BFD_HAVE_SYS_PROCFS_TYPE(prfpregset_t)
 649   BFD_HAVE_SYS_PROCFS_TYPE(prgregset32_t)
 650   BFD_HAVE_SYS_PROCFS_TYPE(prfpregset32_t)
 651   BFD_HAVE_SYS_PROCFS_TYPE(lwpid_t)
 652   BFD_HAVE_SYS_PROCFS_TYPE(psaddr_t)
 653   BFD_HAVE_SYS_PROCFS_TYPE(prsysent_t)
 654   BFD_HAVE_SYS_PROCFS_TYPE(pr_sigset_t)
 655   BFD_HAVE_SYS_PROCFS_TYPE(pr_sigaction64_t)
 656   BFD_HAVE_SYS_PROCFS_TYPE(pr_siginfo64_t)
 657
 658
 659   dnl Check for broken prfpregset_t type
 660
 661   dnl For Linux/i386, glibc 2.1.3 was released with a bogus
 662   dnl prfpregset_t type (it's a typedef for the pointer to a struct
 663   dnl instead of the struct itself).  We detect this here, and work
 664   dnl around it in gdb_proc_service.h.
 665
 666   if test $bfd_cv_have_sys_procfs_type_prfpregset_t = yes; then
 667     AC_MSG_CHECKING(whether prfpregset_t type is broken)
 668     AC_CACHE_VAL(gdb_cv_prfpregset_t_broken,
 669       [AC_TRY_RUN([#include <sys/procfs.h>
 670        int main ()
 671        {
 672          if (sizeof (prfpregset_t) == sizeof (void *))
 673            return 1;
 674          return 0;
 675        }],
 676        gdb_cv_prfpregset_t_broken=no,
 677        gdb_cv_prfpregset_t_broken=yes,
 678        gdb_cv_prfpregset_t_broken=yes)])
 679     AC_MSG_RESULT($gdb_cv_prfpregset_t_broken)
 680     if test $gdb_cv_prfpregset_t_broken = yes; then
 681       AC_DEFINE(PRFPREGSET_T_BROKEN)
 682     fi
 683   fi
 684
 685   dnl Check for PIOCSET ioctl entry
 686
 687   AC_MSG_CHECKING(for PIOCSET ioctl entry in sys/procfs.h)
 688   AC_CACHE_VAL(gdb_cv_have_procfs_piocset,
 689   [AC_TRY_COMPILE([#include <unistd.h>
 690 #include <sys/types.h>
 691 #include <sys/procfs.h>
 692 ], [
 693     int dummy;;
 694     dummy = ioctl(0, PIOCSET, &dummy);
 695   ],
 696   gdb_cv_have_procfs_piocset=yes, gdb_cv_have_procfs_piocset=no)])
 697   AC_MSG_RESULT($gdb_cv_have_procfs_piocset)
 698   if test $gdb_cv_have_procfs_piocset = yes; then
 699     AC_DEFINE(HAVE_PROCFS_PIOCSET)
 700   fi
 701 fi
 702
 703 dnl For native ports (host == target), check to see what kind of
 704 dnl legacy link.h support is needed.  (See solib-legacy.c.)
 705 if test ${host} = ${target} ; then
 706   dnl Check for struct link_map with l_ members which are indicative
 707   dnl of SVR4-like shared libraries
 708
 709   AC_MSG_CHECKING(for member l_addr in struct link_map)
 710   AC_CACHE_VAL(gdb_cv_have_struct_link_map_with_l_members,
 711     [AC_TRY_COMPILE([#include <link.h>],
 712                     [struct link_map lm; (void) lm.l_addr;],
 713                     gdb_cv_have_struct_link_map_with_l_members=yes,
 714                     gdb_cv_have_struct_link_map_with_l_members=no)])
 715   AC_MSG_RESULT($gdb_cv_have_struct_link_map_with_l_members)
 716   if test $gdb_cv_have_struct_link_map_with_l_members = yes; then
 717     AC_DEFINE(HAVE_STRUCT_LINK_MAP_WITH_L_MEMBERS)
 718   fi
 719
 720   dnl Check for struct link_map with lm_ members which are indicative
 721   dnl of SunOS-like shared libraries
 722
 723   AC_MSG_CHECKING(for member lm_addr in struct link_map)
 724   AC_CACHE_VAL(gdb_cv_have_struct_link_map_with_lm_members,
 725     [AC_TRY_COMPILE([#include <sys/types.h>
 726 #include <link.h>],
 727                     [struct link_map lm; (void) lm.lm_addr;],
 728                     gdb_cv_have_struct_link_map_with_lm_members=yes,
 729                     gdb_cv_have_struct_link_map_with_lm_members=no)])
 730   AC_MSG_RESULT($gdb_cv_have_struct_link_map_with_lm_members)
 731   if test $gdb_cv_have_struct_link_map_with_lm_members = yes; then
 732     AC_DEFINE(HAVE_STRUCT_LINK_MAP_WITH_LM_MEMBERS)
 733   fi
 734
 735   dnl Check for struct so_map with som_ members which are found on
 736   dnl some *BSD systems.
 737
 738   AC_MSG_CHECKING(for member som_addr in struct so_map)
 739   AC_CACHE_VAL(gdb_cv_have_struct_so_map_with_som_members,
 740     [AC_TRY_COMPILE([#include <sys/types.h>
 741 #ifdef HAVE_NLIST_H
 742 #include <nlist.h>
 743 #endif
 744 #include <link.h>],
 745                     [struct so_map lm; (void) lm.som_addr;],
 746                     gdb_cv_have_struct_so_map_with_som_members=yes,
 747                     gdb_cv_have_struct_so_map_with_som_members=no)])
 748   AC_MSG_RESULT($gdb_cv_have_struct_so_map_with_som_members)
 749   if test $gdb_cv_have_struct_so_map_with_som_members = yes; then
 750     AC_DEFINE(HAVE_STRUCT_SO_MAP_WITH_SOM_MEMBERS)
 751   fi
 752
 753   dnl Check for struct link_map32 type, which allows a 64-bit Solaris
 754   dnl debugger to debug a 32-bit Solaris app with 32-bit shared libraries.
 755
 756   AC_MSG_CHECKING(for struct link_map32 in sys/link.h)
 757   AC_CACHE_VAL(gdb_cv_have_struct_link_map32,
 758     [AC_TRY_COMPILE([#define _SYSCALL32
 759 #include <sys/link.h>], [struct link_map32 l;],
 760      gdb_cv_have_struct_link_map32=yes,
 761      gdb_cv_have_struct_link_map32=no)])
 762   AC_MSG_RESULT($gdb_cv_have_struct_link_map32)
 763   if test $gdb_cv_have_struct_link_map32 = yes; then
 764     AC_DEFINE(HAVE_STRUCT_LINK_MAP32)
 765     AC_DEFINE(_SYSCALL32)
 766   fi
 767 fi
 768
 769 dnl See if compiler supports "long long" type.
 770
 771 AC_MSG_CHECKING(for long long support in compiler)
 772 AC_CACHE_VAL(gdb_cv_c_long_long,
 773 [AC_TRY_COMPILE(, [
 774   extern long long foo;
 775   switch (foo & 2) { case 0: return 1; }
 776 ],
 777 gdb_cv_c_long_long=yes, gdb_cv_c_long_long=no)])
 778 AC_MSG_RESULT($gdb_cv_c_long_long)
 779 if test $gdb_cv_c_long_long = yes; then
 780   AC_DEFINE(CC_HAS_LONG_LONG)
 781 fi
 782
 783 dnl See if the compiler and runtime support printing long long
 784
 785 AC_MSG_CHECKING(for long long support in printf)
 786 AC_CACHE_VAL(gdb_cv_printf_has_long_long,
 787 [AC_TRY_RUN([
 788 int main () {
 789   char buf[32];
 790   long long l = 0;
 791   l = (l << 16) + 0x0123;
 792   l = (l << 16) + 0x4567;
 793   l = (l << 16) + 0x89ab;
 794   l = (l << 16) + 0xcdef;
 795   sprintf (buf, "0x%016llx", l);
 796   return (strcmp ("0x0123456789abcdef", buf));
 797 }],
 798 gdb_cv_printf_has_long_long=yes,
 799 gdb_cv_printf_has_long_long=no,
 800 gdb_cv_printf_has_long_long=no)])
 801 if test $gdb_cv_printf_has_long_long = yes; then
 802   AC_DEFINE(PRINTF_HAS_LONG_LONG)
 803 fi
 804 AC_MSG_RESULT($gdb_cv_printf_has_long_long)
 805
 806 dnl See if compiler supports "long double" type.  Can't use AC_C_LONG_DOUBLE
 807 dnl because autoconf complains about cross-compilation issues.  However, this
 808 dnl code uses the same variables as the macro for compatibility.
 809
 810 AC_MSG_CHECKING(for long double support in compiler)
 811 AC_CACHE_VAL(ac_cv_c_long_double,
 812 [AC_TRY_COMPILE(, [long double foo;],
 813 ac_cv_c_long_double=yes, ac_cv_c_long_double=no)])
 814 AC_MSG_RESULT($ac_cv_c_long_double)
 815 if test $ac_cv_c_long_double = yes; then
 816   AC_DEFINE(HAVE_LONG_DOUBLE)
 817 fi
 818
 819 dnl See if the compiler and runtime support printing long doubles
 820
 821 AC_MSG_CHECKING(for long double support in printf)
 822 AC_CACHE_VAL(gdb_cv_printf_has_long_double,
 823 [AC_TRY_RUN([
 824 int main () {
 825   char buf[16];
 826   long double f = 3.141592653;
 827   sprintf (buf, "%Lg", f);
 828   return (strncmp ("3.14159", buf, 7));
 829 }],
 830 gdb_cv_printf_has_long_double=yes,
 831 gdb_cv_printf_has_long_double=no,
 832 gdb_cv_printf_has_long_double=no)])
 833 if test $gdb_cv_printf_has_long_double = yes; then
 834   AC_DEFINE(PRINTF_HAS_LONG_DOUBLE)
 835 fi
 836 AC_MSG_RESULT($gdb_cv_printf_has_long_double)
 837
 838 dnl See if the compiler and runtime support scanning long doubles
 839
 840 AC_MSG_CHECKING(for long double support in scanf)
 841 AC_CACHE_VAL(gdb_cv_scanf_has_long_double,
 842 [AC_TRY_RUN([
 843 int main () {
 844   char *buf = "3.141592653";
 845   long double f = 0;
 846   sscanf (buf, "%Lg", &f);
 847   return !(f > 3.14159 && f < 3.14160);
 848 }],
 849 gdb_cv_scanf_has_long_double=yes,
 850 gdb_cv_scanf_has_long_double=no,
 851 gdb_cv_scanf_has_long_double=no)])
 852 if test $gdb_cv_scanf_has_long_double = yes; then
 853   AC_DEFINE(SCANF_HAS_LONG_DOUBLE)
 854 fi
 855 AC_MSG_RESULT($gdb_cv_scanf_has_long_double)
 856
 857 case ${host_os} in
 858 aix*)
 859   AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
 860     SAVE_LDFLAGS=$LDFLAGS
 861
 862     case $GCC in
 863     yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
 864     *) gdb_cv_bigtoc=-bbigtoc ;;
 865     esac
 866
 867     LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
 868     AC_TRY_LINK([], [int i;], [], [gdb_cv_bigtoc=])
 869   ])
 870   CONFIG_LDFLAGS="${CONFIG_LDFLAGS} ${gdb_cv_bigtoc}"
 871   ;;
 872 esac
 873
 874
 875 dnl For certain native configurations, we need to check whether thread
 876 dnl support can be built in or not.
 877 dnl
 878 dnl Note that we only want this if we are both native (host == target),
 879 dnl and not doing a canadian cross build (build == host).
 880
 881 if test ${build} = ${host} -a ${host} = ${target} ; then
 882    case ${host_os} in
 883    hpux*)
 884       AC_MSG_CHECKING(for HPUX/OSF thread support)
 885       if test -f /usr/include/dce/cma_config.h ; then
 886          if test "$GCC" = "yes" ; then
 887             AC_MSG_RESULT(yes)
 888             AC_DEFINE(HAVE_HPUX_THREAD_SUPPORT)
 889             CONFIG_OBS="${CONFIG_OBS} hpux-thread.o"
 890             CONFIG_SRCS="${CONFIG_SRCS} hpux-thread.c"
 891          else
 892             AC_MSG_RESULT(no (suppressed because you are not using GCC))
 893          fi
 894       else
 895          AC_MSG_RESULT(no)
 896       fi
 897       ;;
 898    solaris*)
 899       # See if thread_db library is around for Solaris thread debugging.
 900       # Note that we must explicitly test for version 1 of the library
 901       # because version 0 (present on Solaris 2.4 or earlier) doesn't have
 902       # the same API.
 903       AC_MSG_CHECKING(for Solaris thread debugging library)
 904       if test -f /usr/lib/libthread_db.so.1 ; then
 905          AC_MSG_RESULT(yes)
 906          AC_DEFINE(HAVE_THREAD_DB_LIB)
 907          CONFIG_OBS="${CONFIG_OBS} sol-thread.o"
 908          CONFIG_SRCS="${CONFIG_SRCS} sol-thread.c"
 909          AC_CHECK_LIB(dl, dlopen)
 910          if test "$GCC" = "yes" ; then
 911             # The GNU linker requires the -export-dynamic option to make
 912             # all symbols visible in the dynamic symbol table.
 913             hold_ldflags=$LDFLAGS
 914             AC_MSG_CHECKING(for the ld -export-dynamic flag)
 915             LDFLAGS="${LDFLAGS} -Wl,-export-dynamic"
 916             AC_TRY_LINK(, [int i;], found=yes, found=no)
 917             LDFLAGS=$hold_ldflags
 918             AC_MSG_RESULT($found)
 919             if test $found = yes; then
 920                CONFIG_LDFLAGS="${CONFIG_LDFLAGS} -Wl,-export-dynamic"
 921             fi
 922          fi
 923          # Sun randomly tweaked the prototypes in <proc_service.h>
 924          # at one point.
 925          AC_MSG_CHECKING(if <proc_service.h> is old)
 926          AC_CACHE_VAL(gdb_cv_proc_service_is_old,[
 927             AC_TRY_COMPILE([
 928                 #include <proc_service.h>
 929                 ps_err_e ps_pdwrite
 930                     (struct ps_prochandle*, psaddr_t, const void*, size_t);
 931             ],, gdb_cv_proc_service_is_old=no,
 932                 gdb_cv_proc_service_is_old=yes)
 933          ])
 934          AC_MSG_RESULT($gdb_cv_proc_service_is_old)
 935          if test $gdb_cv_proc_service_is_old = yes; then
 936             AC_DEFINE(PROC_SERVICE_IS_OLD)
 937          fi
 938       else
 939          AC_MSG_RESULT(no)
 940       fi
 941       ;;
 942    aix*)
 943       AC_MSG_CHECKING(for AiX thread debugging library)
 944       AC_CACHE_VAL(gdb_cv_have_aix_thread_debug,
 945                    [AC_TRY_COMPILE([#include <sys/pthdebug.h>],
 946                                    [#ifndef PTHDB_VERSION_3
 947                                     #error
 948                                     #endif],
 949                                    gdb_cv_have_aix_thread_debug=yes,
 950                                    gdb_cv_have_aix_thread_debug=no)])
 951       AC_MSG_RESULT($gdb_cv_have_aix_thread_debug)
 952       if test $gdb_cv_have_aix_thread_debug = yes; then
 953          CONFIG_SRCS="${CONFIG_SRCS} aix-thread.c"
 954          CONFIG_OBS="${CONFIG_OBS} aix-thread.o"
 955          CONFIG_LDFLAGS="${CONFIG_LDFLAGS} -lpthdebug"
 956       fi
 957       ;;
 958    esac
 959    AC_SUBST(CONFIG_LDFLAGS)
 960 fi
 961
 962 dnl See if we have a thread_db header file that has TD_NOTALLOC.
 963 if test "x$ac_cv_header_thread_db_h" = "xyes"; then
 964    AC_CACHE_CHECK([whether <thread_db.h> has TD_NOTALLOC],
 965                   gdb_cv_thread_db_h_has_td_notalloc,
 966      AC_TRY_COMPILE(
 967        [#include <thread_db.h>],
 968        [int i = TD_NOTALLOC;],
 969        gdb_cv_thread_db_h_has_td_notalloc=yes,
 970        gdb_cv_thread_db_h_has_td_notalloc=no
 971      )
 972    )
 973 fi
 974 if test "x$gdb_cv_thread_db_h_has_td_notalloc" = "xyes"; then
 975   AC_DEFINE(THREAD_DB_HAS_TD_NOTALLOC, 1,
 976             [Define if <thread_db.h> has the TD_NOTALLOC error code.])
 977 fi
 978
 979 dnl See if we have a sys/syscall header file that has __NR_tkill.
 980 if test "x$ac_cv_header_sys_syscall_h" = "xyes"; then
 981    AC_CACHE_CHECK([whether <sys/syscall.h> has __NR_tkill],
 982                   gdb_cv_sys_syscall_h_has_tkill,
 983      AC_TRY_COMPILE(
 984        [#include <sys/syscall.h>],
 985        [int i = __NR_tkill;],
 986        gdb_cv_sys_syscall_h_has_tkill=yes,
 987        gdb_cv_sys_syscall_h_has_tkill=no
 988      )
 989    )
 990 fi
 991 dnl See if we can issue tkill syscall.
 992 if test "x$gdb_cv_sys_syscall_h_has_tkill" = "xyes" && test "x$ac_cv_func_syscall" = "xyes"; then
 993   AC_DEFINE(HAVE_TKILL_SYSCALL, 1,
 994             [Define if we can use the tkill syscall.])
 995 fi
 996
 997 dnl Handle optional features that can be enabled.
 998
 999 AC_ARG_WITH(sysroot,
1000 [  --with-sysroot[=DIR] Search for usr/lib et al within DIR.],
1001 [
1002  case ${with_sysroot} in
1003  yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_alias}/sys-root' ;;
1004  *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
1005  esac
1006
1007  TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
1008
1009  if test "x$exec_prefix" = xNONE; then
1010   if test "x$prefix" = xNONE; then
1011    test_prefix=/usr/local
1012   else
1013    test_prefix=$prefix
1014   fi
1015  else
1016   test_prefix=$exec_prefix
1017  fi
1018  case ${TARGET_SYSTEM_ROOT} in
1019  "${test_prefix}"|"${test_prefix}/"*|\
1020  '${exec_prefix}'|'${exec_prefix}/'*)
1021    t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
1022    TARGET_SYSTEM_ROOT_DEFINE="$t"
1023    ;;
1024  esac
1025 ], [
1026  TARGET_SYSTEM_ROOT=
1027  TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"\"'
1028 ])
1029 AC_SUBST(TARGET_SYSTEM_ROOT)
1030 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
1031
1032 # NOTE: Don't add -Wall or -Wunused, they both include
1033 # -Wunused-parameter which reports bogus warnings.
1034 # NOTE: If you add to this list, remember to update
1035 # gdb/doc/gdbint.texinfo.
1036 build_warnings="-Wimplicit -Wreturn-type -Wcomment -Wtrigraphs \
1037 -Wformat -Wparentheses -Wpointer-arith -Wuninitialized -Wformat-nonliteral \
1038 -Wunused-label -Wunused-function"
1039 # Up for debate: -Wswitch -Wcomment -trigraphs -Wtrigraphs
1040 # -Wunused-function -Wunused-variable -Wunused-value
1041 # -Wchar-subscripts -Wtraditional -Wshadow -Wcast-qual
1042 # -Wcast-align -Wwrite-strings -Wconversion -Wstrict-prototypes
1043 # -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls
1044 # -Woverloaded-virtual -Winline -Werror"
1045 AC_ARG_ENABLE(build-warnings,
1046 [  --enable-build-warnings Enable build-time compiler warnings if gcc is used],
1047 [case "${enableval}" in
1048   yes)  ;;
1049   no)   build_warnings="-w";;
1050   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1051         build_warnings="${build_warnings} ${t}";;
1052   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1053         build_warnings="${t} ${build_warnings}";;
1054   *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
1055 esac
1056 if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
1057   echo "Setting compiler warning flags = $build_warnings" 6>&1
1058 fi])dnl
1059 AC_ARG_ENABLE(gdb-build-warnings,
1060 [  --enable-gdb-build-warnings Enable GDB specific build-time compiler warnings if gcc is used],
1061 [case "${enableval}" in
1062   yes)  ;;
1063   no)   build_warnings="-w";;
1064   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1065         build_warnings="${build_warnings} ${t}";;
1066   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1067         build_warnings="${t} ${build_warnings}";;
1068   *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
1069 esac
1070 if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
1071   echo "Setting GDB specific compiler warning flags = $build_warnings" 6>&1
1072 fi])dnl
1073 WARN_CFLAGS=""
1074 WERROR_CFLAGS=""
1075 if test "x${build_warnings}" != x -a "x$GCC" = xyes
1076 then
1077     AC_MSG_CHECKING(compiler warning flags)
1078     # Separate out the -Werror flag as some files just cannot be
1079     # compiled with it enabled.
1080     for w in ${build_warnings}; do
1081         case $w in
1082         -Werr*) WERROR_CFLAGS=-Werror ;;
1083         *) # Check that GCC accepts it
1084             saved_CFLAGS="$CFLAGS"
1085             CFLAGS="$CFLAGS $w"
1086             AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",)
1087             CFLAGS="$saved_CFLAGS"
1088         esac
1089     done
1090     AC_MSG_RESULT(${WARN_CFLAGS}${WERROR_CFLAGS})
1091 fi
1092 AC_SUBST(WARN_CFLAGS)
1093 AC_SUBST(WERROR_CFLAGS)
1094
1095 # In the Cygwin environment, we need some additional flags.
1096 AC_CACHE_CHECK([for cygwin], gdb_cv_os_cygwin,
1097 [AC_EGREP_CPP(lose, [
1098 #if defined (__CYGWIN__) || defined (__CYGWIN32__)
1099 lose
1100 #endif],[gdb_cv_os_cygwin=yes],[gdb_cv_os_cygwin=no])])
1101
1102
1103 dnl Figure out which of the many generic ser-*.c files the _host_ supports.
1104 SER_HARDWIRE="ser-unix.o ser-pipe.o ser-tcp.o"
1105 case ${host} in
1106   *go32* ) SER_HARDWIRE=ser-go32.o ;;
1107   *djgpp* ) SER_HARDWIRE=ser-go32.o ;;
1108 esac
1109 AC_SUBST(SER_HARDWIRE)
1110
1111 # libreadline needs libuser32.a in a cygwin environment
1112 WIN32LIBS=
1113 if test x$gdb_cv_os_cygwin = xyes; then
1114     WIN32LIBS="-luser32"
1115     case "${target}" in
1116         *cygwin*) WIN32LIBS="$WIN32LIBS -limagehlp"
1117         ;;
1118     esac
1119 fi
1120 AC_SUBST(WIN32LIBS)
1121
1122 LIBGUI="../libgui/src/libgui.a"
1123 GUI_CFLAGS_X="-I${srcdir}/../libgui/src"
1124 AC_SUBST(LIBGUI)
1125 AC_SUBST(GUI_CFLAGS_X)
1126
1127 WIN32LDAPP=
1128 AC_SUBST(WIN32LIBS)
1129 AC_SUBST(WIN32LDAPP)
1130
1131 configdir="unix"
1132
1133 GDBTKLIBS=
1134 if test "${enable_gdbtk}" = "yes"; then
1135
1136     # Gdbtk must have an absolute path to srcdir in order to run
1137     # properly when not installed.
1138     here=`pwd`
1139     cd ${srcdir}
1140     GDBTK_SRC_DIR=`pwd`
1141     cd $here
1142
1143     CY_AC_PATH_TCLCONFIG
1144     if test -z "${no_tcl}"; then
1145         CY_AC_LOAD_TCLCONFIG
1146         CY_AC_PATH_TKCONFIG
1147
1148         # now look for Tcl library stuff
1149
1150         case "${host}" in
1151         *-*-cygwin*)
1152             tcldir=../tcl/win/
1153             ;;
1154         *)
1155             tcldir=../tcl/unix/
1156             ;;
1157         esac
1158
1159         TCL_DEPS="${tcldir}${TCL_LIB_FILE}"
1160
1161         # If $no_tk is nonempty, then we can't do Tk, and there is no
1162         # point to doing Tcl.
1163         if test -z "${no_tk}"; then
1164            CY_AC_LOAD_TKCONFIG
1165            CY_AC_PATH_TCLH
1166            CY_AC_PATH_TKH
1167            CY_AC_PATH_ITCLH
1168            CY_AC_PATH_ITKH
1169
1170
1171            # now look for Tk library stuff
1172
1173            case "${host}" in
1174            *-*-cygwin*)
1175                tkdir=../tk/win/
1176                ;;
1177            *)
1178                tkdir=../tk/unix/
1179                ;;
1180            esac
1181
1182            TK_DEPS="${tkdir}${TK_LIB_FILE}"
1183
1184            # now look for Itcl library stuff
1185
1186            CY_AC_PATH_ITCLCONFIG
1187            if test -z "${no_itcl}"; then
1188              CY_AC_LOAD_ITCLCONFIG
1189
1190              ITCLLIB="${ITCL_BUILD_LIB_SPEC}"
1191              ITCL_DEPS="${ITCL_LIB_FULL_PATH}"
1192            fi
1193
1194
1195            # now look for Itk library stuff
1196            CY_AC_PATH_ITKCONFIG
1197            if test -z "${no_itcl}"; then
1198              CY_AC_LOAD_ITKCONFIG
1199
1200              ITKLIB="${ITK_BUILD_LIB_SPEC}"
1201              ITK_DEPS="${ITK_LIB_FULL_PATH}"
1202            fi
1203
1204            ENABLE_CFLAGS="${ENABLE_CFLAGS} \$(SUBDIR_GDBTK_CFLAGS)"
1205            # Tcl/Tk 8.1 require -fwritable strings.  I don't
1206            # know whether 8.2 will or not, but I bet it will.
1207            # I don't have to worry about 7.x since we don't support it.
1208            GDBTK_CFLAGS=""
1209            if test "$GCC" = "yes"; then
1210                if test "$TCL_VERSION" != "8.0" ; then
1211                    GDBTK_CFLAGS="-fwritable-strings"
1212                fi
1213            fi
1214
1215            # Include some libraries that Tcl and Tk want.
1216            TCL_LIBS='$(LIBGUI) $(ITCL) $(ITK) $(TK) $(TCL) $(X11_LDFLAGS) $(X11_LIBS)'
1217            # Yes, the ordering seems wrong here.  But it isn't.
1218            # TK_LIBS is the list of libraries that need to be linked
1219            # after Tcl/Tk.  Note that this isn't put into LIBS.  If it
1220            # were in LIBS then any link tests after this point would
1221            # try to include things like `$(LIBGUI)', which wouldn't work.
1222            GDBTKLIBS="${TCL_LIBS} ${TK_LIBS}"
1223
1224            CONFIG_OBS="${CONFIG_OBS} \$(SUBDIR_GDBTK_OBS)"
1225            CONFIG_DEPS="${CONFIG_DEPS} \$(SUBDIR_GDBTK_DEPS)"
1226            CONFIG_SRCS="${CONFIG_SRCS} \$(SUBDIR_GDBTK_SRCS)"
1227            CONFIG_ALL="${CONFIG_ALL} all-gdbtk"
1228            CONFIG_CLEAN="${CONFIG_CLEAN} clean-gdbtk"
1229            CONFIG_INSTALL="${CONFIG_INSTALL} install-gdbtk"
1230            CONFIG_UNINSTALL="${CONFIG_UNINSTALL} uninstall-gdbtk"
1231
1232            if test x$gdb_cv_os_cygwin = xyes; then
1233               WIN32LIBS="${WIN32LIBS} -lshell32 -lgdi32 -lcomdlg32 -ladvapi32"
1234               WIN32LDAPP="-Wl,--subsystem,console"
1235               CONFIG_OBS="${CONFIG_OBS} gdbres.o"
1236            fi
1237         fi
1238     fi
1239
1240     configdirs="${configdirs} gdbtk"
1241 fi
1242
1243 AC_SUBST(X_CFLAGS)
1244 AC_SUBST(X_LDFLAGS)
1245 AC_SUBST(X_LIBS)
1246 AC_SUBST(TCL_DEPS)
1247 AC_SUBST(TK_DEPS)
1248 AC_SUBST(ITCLLIB)
1249 AC_SUBST(ITCL_DEPS)
1250 AC_SUBST(ITKLIB)
1251 AC_SUBST(ITK_DEPS)
1252 AC_SUBST(GDBTKLIBS)
1253 AC_SUBST(GDBTK_CFLAGS)
1254 AC_SUBST(GDBTK_SRC_DIR)
1255
1256 AC_PATH_X
1257
1258
1259 # Unlike the sim directory, whether a simulator is linked is controlled by
1260 # presence of a SIM= and a SIM_OBS= definition in the target '.mt' file.
1261 # This code just checks for a few cases where we'd like to ignore those
1262 # definitions, even when they're present in the '.mt' file.  These cases
1263 # are when --disable-sim is specified, or if the simulator directory is
1264 # not part of the source tree.
1265 #
1266 AC_ARG_ENABLE(sim,
1267 [  --enable-sim            Link gdb with simulator],
1268 [echo "enable_sim = $enable_sim";
1269  echo "enableval = ${enableval}";
1270  case "${enableval}" in
1271   yes) ignore_sim=false ;;
1272   no)  ignore_sim=true ;;
1273   *)   ignore_sim=false ;;
1274  esac],
1275 [ignore_sim=false])
1276
1277 if test ! -d "${srcdir}/../sim"; then
1278   ignore_sim=true
1279 fi
1280
1281 if test "${ignore_sim}" = "true"; then
1282     IGNORE_SIM="SIM="
1283     IGNORE_SIM_OBS="SIM_OBS="
1284 else
1285     IGNORE_SIM=""
1286     IGNORE_SIM_OBS=""
1287     AC_DEFINE(WITH_SIM)
1288 fi
1289 AC_SUBST(IGNORE_SIM)
1290 AC_SUBST(IGNORE_SIM_OBS)
1291
1292 AC_SUBST(ENABLE_CFLAGS)
1293 AC_SUBST(PROFILE_CFLAGS)
1294
1295 AC_SUBST(CONFIG_OBS)
1296 AC_SUBST(CONFIG_DEPS)
1297 AC_SUBST(CONFIG_SRCS)
1298 AC_SUBST(CONFIG_ALL)
1299 AC_SUBST(CONFIG_CLEAN)
1300 AC_SUBST(CONFIG_INSTALL)
1301 AC_SUBST(CONFIG_UNINSTALL)
1302
1303 # target_subdir is used by the testsuite to find the target libraries.
1304 target_subdir=
1305 if test "${host}" != "${target}"; then
1306     target_subdir="${target_alias}/"
1307 fi
1308 AC_SUBST(target_subdir)
1309
1310 frags=
1311 host_makefile_frag=${srcdir}/config/${gdb_host_cpu}/${gdb_host}.mh
1312 if test ! -f ${host_makefile_frag}; then
1313     # When building a native debuger the .mh file containing things
1314     # like NATDEPFILES is needed.  Cross debuggers don't need .mh
1315     # since it no longer contains anything useful.
1316     if test "${target}" = "${host}"; then
1317         AC_MSG_ERROR("*** Gdb does not support native target ${host}")
1318     else
1319         host_makefile_frag=/dev/null
1320     fi
1321 fi
1322 frags="$frags $host_makefile_frag"
1323
1324 target_makefile_frag=${srcdir}/config/${gdb_target_cpu}/${gdb_target}.mt
1325 if test ! -f ${target_makefile_frag}; then
1326 AC_MSG_ERROR("*** Gdb does not support target ${target}")
1327 fi
1328 frags="$frags $target_makefile_frag"
1329
1330 AC_SUBST_FILE(host_makefile_frag)
1331 AC_SUBST_FILE(target_makefile_frag)
1332 AC_SUBST(frags)
1333
1334 changequote(,)dnl
1335 hostfile=`sed -n '
1336 s/XM_FILE[      ]*=[    ]*\([^  ]*\)/\1/p
1337 ' ${host_makefile_frag}`
1338
1339 targetfile=`sed -n '
1340 s/TM_FILE[      ]*=[    ]*\([^  ]*\)/\1/p
1341 ' ${target_makefile_frag}`
1342
1343 if test "${target}" = "${host}"; then
1344 # We pick this up from the host configuration file (.mh) because we
1345 # do not have a native configuration Makefile fragment.
1346 nativefile=`sed -n '
1347 s/NAT_FILE[     ]*=[    ]*\([^  ]*\)/\1/p
1348 ' ${host_makefile_frag}`
1349 fi
1350 changequote([,])
1351
1352 if test x"${gdb_osabi}" != x ; then
1353     AC_DEFINE_UNQUOTED(GDB_OSABI_DEFAULT, $gdb_osabi,
1354                        [Define to the default OS ABI for this configuration.])
1355 fi
1356
1357 # Enable multi-ice-gdb-server.
1358 AC_ARG_ENABLE(multi-ice,
1359 [  --enable-multi-ice      build the multi-ice-gdb-server],
1360   [case $enableval in
1361     yes | no)
1362       ;;
1363     *) AC_MSG_ERROR([bad value $enableval for --enable-multi-ice]) ;;
1364   esac])
1365 if test "x$enable_multi_ice" = xyes; then
1366   configdirs="$configdirs multi-ice"
1367 fi
1368
1369 # We only build gdbserver automatically if host and target are the same.
1370 if test "x$target" = "x$host"; then
1371   AC_MSG_CHECKING(whether gdbserver is supported on this host)
1372   if test "x$build_gdbserver" = xyes; then
1373     configdirs="$configdirs gdbserver"
1374     AC_MSG_RESULT(yes)
1375   else
1376     AC_MSG_RESULT(no)
1377   fi
1378 fi
1379
1380 AC_CONFIG_SUBDIRS($configdirs)
1381
1382 # If hostfile (XM_FILE) and/or targetfile (TM_FILE) and/or nativefile
1383 # (NAT_FILE) is not set in config/*/*.m[ht] files, we link to an empty
1384 # version.
1385
1386 files=
1387 links=
1388
1389 rm -f xm.h
1390 xm_h=""
1391 if test "${hostfile}" != ""; then
1392     xm_h=xm.h
1393     GDB_XM_FILE="config/${gdb_host_cpu}/${hostfile}"
1394     files="${files} ${GDB_XM_FILE}"
1395     links="${links} xm.h"
1396     AC_DEFINE_UNQUOTED(GDB_XM_FILE, ${GDB_XM_FILE})
1397 fi
1398 AC_SUBST(xm_h)
1399
1400 rm -f tm.h
1401 tm_h=""
1402 if test "${targetfile}" != ""; then
1403     tm_h=tm.h
1404     GDB_TM_FILE="config/${gdb_target_cpu}/${targetfile}"
1405     files="${files} ${GDB_TM_FILE}"
1406     links="${links} tm.h"
1407     AC_DEFINE_UNQUOTED(GDB_TM_FILE, ${GDB_TM_FILE})
1408 fi
1409 AC_SUBST(tm_h)
1410
1411 rm -f nm.h
1412 nm_h=""
1413 if test "${nativefile}" != ""; then
1414     nm_h=nm.h
1415     GDB_NM_FILE="config/${gdb_host_cpu}/${nativefile}"
1416     files="${files} ${GDB_NM_FILE}"
1417     links="${links} nm.h"
1418     AC_DEFINE_UNQUOTED(GDB_NM_FILE, ${GDB_NM_FILE})
1419 fi
1420 AC_SUBST(nm_h)
1421
1422 AC_LINK_FILES($files, $links)
1423
1424 dnl Check for exe extension set on certain hosts (e.g. Win32)
1425 AC_EXEEXT
1426
1427 dnl  Detect the character set used by this host.
1428
1429 dnl  At the moment, we just assume it's ISO-8859-1 (which is a
1430 dnl  superset of ASCII containing the characters needed for French,
1431 dnl  German, Spanish, Italian, and possibly others), but if were
1432 dnl  *were* to support any host character sets other than ISO-8859-1,
1433 dnl  here's where we'd detect it.
1434 AC_DEFINE(GDB_DEFAULT_HOST_CHARSET, "ISO-8859-1",
1435           [Define to be a string naming the default host character set.])
1436
1437 AM_ICONV
1438
1439 AC_OUTPUT(Makefile .gdbinit:gdbinit.in,
1440 [
1441 dnl Autoconf doesn't provide a mechanism for modifying definitions
1442 dnl provided by makefile fragments.
1443 dnl
1444 if test "${nativefile}" = ""; then
1445         < Makefile \
1446         sed -e '/^NATDEPFILES[[         ]]*=.*\\$/,/[[^\\]]$/s/^/# /' \
1447             -e '/^NATDEPFILES[[         ]]*=/s/^/# /' \
1448         | sed -e '/^\(NATDEPFILES[[     ]]*[[+]]=[[     ]]*\)/s//# \1/' \
1449         > Makefile.tem
1450 mv -f Makefile.tem Makefile
1451 fi
1452
1453 changequote(,)dnl
1454 sed -e '/^TM_FILE[      ]*=/s,^TM_FILE[         ]*=[    ]*,&config/'"${gdb_target_cpu}"'/,
1455 /^XM_FILE[      ]*=/s,^XM_FILE[         ]*=[    ]*,&config/'"${gdb_host_cpu}"'/,
1456 /^NAT_FILE[     ]*=/s,^NAT_FILE[        ]*=[    ]*,&config/'"${gdb_host_cpu}"'/,' <Makefile >Makefile.tmp
1457 mv -f Makefile.tmp Makefile
1458 changequote([,])dnl
1459
1460
1461 case x$CONFIG_HEADERS in
1462 xconfig.h:config.in)
1463 echo > stamp-h ;;
1464 esac
1465 ],
1466 [
1467 gdb_host_cpu=$gdb_host_cpu
1468 gdb_target_cpu=$gdb_target_cpu
1469 nativefile=$nativefile
1470 ])
1471
1472 exit 0