gdb/configure.ac

   1 dnl Autoconf configure script for GDB, the GNU debugger.
   2 dnl Copyright (C) 1995-2013 Free Software Foundation, Inc.
   3 dnl
   4 dnl This file is part of GDB.
   5 dnl
   6 dnl This program is free software; you can redistribute it and/or modify
   7 dnl it under the terms of the GNU General Public License as published by
   8 dnl the Free Software Foundation; either version 3 of the License, or
   9 dnl (at your option) any later version.
  10 dnl
  11 dnl This program is distributed in the hope that it will be useful,
  12 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 dnl GNU General Public License for more details.
  15 dnl
  16 dnl You should have received a copy of the GNU General Public License
  17 dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 dnl Process this file with autoconf to produce a configure script.
  20
  21 AC_PREREQ(2.59)dnl
  22 AC_INIT(main.c)
  23 AC_CONFIG_HEADER(config.h:config.in)
  24 AM_MAINTAINER_MODE
  25
  26 # Set the 'development' global.
  27 . $srcdir/development.sh
  28
  29 AC_PROG_CC
  30 AC_USE_SYSTEM_EXTENSIONS
  31 ACX_LARGEFILE
  32 AM_PROG_CC_STDC
  33
  34 AC_CONFIG_AUX_DIR(..)
  35 AC_CANONICAL_SYSTEM
  36 AC_ARG_PROGRAM
  37
  38 # Dependency checking.
  39 ZW_CREATE_DEPDIR
  40 ZW_PROG_COMPILER_DEPENDENCIES([CC])
  41
  42 # Check for the 'make' the user wants to use.
  43 AC_CHECK_PROGS(MAKE, make)
  44 MAKE_IS_GNU=
  45 case "`$MAKE --version 2>&1 | sed 1q`" in
  46   *GNU*)
  47     MAKE_IS_GNU=yes
  48     ;;
  49 esac
  50 AM_CONDITIONAL(GMAKE, test "$MAKE_IS_GNU" = yes)
  51 AC_PROG_MAKE_SET
  52
  53 # Configure gnulib.  We need to build gnulib under some other
  54 # directory not "gnulib", to avoid the problem of both GDB and
  55 # GDBserver wanting to build it in the same directory, when building
  56 # in the source dir.
  57 ACX_CONFIGURE_DIR(["gnulib"], ["build-gnulib"])
  58
  59 dnl List of object files and targets accumulated by configure.
  60
  61 CONFIG_OBS=
  62 CONFIG_DEPS=
  63 CONFIG_SRCS=
  64 ENABLE_CFLAGS=
  65
  66 CONFIG_ALL=
  67 CONFIG_CLEAN=
  68 CONFIG_INSTALL=
  69 CONFIG_UNINSTALL=
  70
  71 dnl Set up for gettext.
  72 ZW_GNU_GETTEXT_SISTER_DIR
  73
  74 localedir='${datadir}/locale'
  75 AC_SUBST(localedir)
  76
  77 if test x"$USE_NLS" = xyes; then
  78    CONFIG_ALL="$CONFIG_ALL all-po"
  79    CONFIG_CLEAN="$CONFIG_CLEAN clean-po"
  80    CONFIG_INSTALL="$CONFIG_INSTALL install-po"
  81    CONFIG_UNINSTALL="$CONFIG_UNINSTALL uninstall-po"
  82 fi
  83
  84 GNULIB=build-gnulib/import
  85
  86 # For Makefile dependencies.
  87 GNULIB_STDINT_H=
  88 if test x"$STDINT_H" != x; then
  89   GNULIB_STDINT_H=$GNULIB/$STDINT_H
  90 fi
  91 AC_SUBST(GNULIB_STDINT_H)
  92
  93 PACKAGE=gdb
  94 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of this package. ])
  95 AC_SUBST(PACKAGE)
  96
  97 # We never need to detect it in this sub-configure.
  98 # But preserve it for config.status --recheck.
  99 AC_ARG_VAR(MAKEINFO,
 100   [Parent configure detects if it is of sufficient version.])
 101 AC_ARG_VAR(MAKEINFOFLAGS,
 102   [Parameters for MAKEINFO.])
 103
 104 MAKEINFO_EXTRA_FLAGS=""
 105 AC_CACHE_CHECK([whether $MAKEINFO supports @click], gdb_cv_have_makeinfo_click,
 106   [echo '@clicksequence{a @click{} b}' >conftest.texinfo
 107   if eval "$MAKEINFO conftest.texinfo >&5 2>&5"; then
 108     gdb_cv_have_makeinfo_click=yes
 109   else
 110     gdb_cv_have_makeinfo_click=no
 111   fi])
 112 if test x"$gdb_cv_have_makeinfo_click" = xyes; then
 113   MAKEINFO_EXTRA_FLAGS="$MAKEINFO_EXTRA_FLAGS -DHAVE_MAKEINFO_CLICK"
 114 fi
 115 AC_SUBST(MAKEINFO_EXTRA_FLAGS)
 116
 117 GDB_AC_WITH_DIR(DEBUGDIR, separate-debug-dir,
 118     [look for global separate debug info in this path @<:@LIBDIR/debug@:>@],
 119     [${libdir}/debug])
 120
 121 # We can't pass paths as command line arguments.
 122 # Mingw32 tries to be clever and will convert the paths for us.
 123 # For example -DBINDIR="/usr/local/bin" passed on the command line may get
 124 # converted to -DBINDIR="E:/msys/mingw32/msys/1.0/local/bin".
 125 # This breaks GDB's relocatable path conversions since paths passed in
 126 # config.h would not get so translated, the path prefixes no longer match.
 127 AC_DEFINE_DIR(BINDIR, bindir, [Directory of programs.])
 128
 129 # GDB's datadir relocation
 130
 131 GDB_AC_WITH_DIR(GDB_DATADIR, gdb-datadir,
 132     [look for global separate data files in this path @<:@DATADIR/gdb@:>@],
 133     [${datadir}/gdb])
 134
 135 AC_ARG_WITH(relocated-sources,
 136 AS_HELP_STRING([--with-relocated-sources=PATH], [automatically relocate this path for source files]),
 137 [reloc_srcdir="${withval}"
 138  AC_DEFINE_DIR(RELOC_SRCDIR, reloc_srcdir,
 139               [Relocated directory for source files. ])
 140 ])
 141
 142 AC_MSG_CHECKING([for default auto-load directory])
 143 AC_ARG_WITH(auto-load-dir,
 144 AS_HELP_STRING([--with-auto-load-dir=PATH],
 145   [directories from which to load auto-loaded scripts @<:@$debugdir:$datadir/auto-load@:>@]),,
 146   [with_auto_load_dir='$debugdir:$datadir/auto-load'])
 147 escape_dir=`echo $with_auto_load_dir | sed 's/[[$]]\(datadir\|debugdir\)\>/\\\\\\\\\\\\&/g'`
 148 AC_DEFINE_DIR(AUTO_LOAD_DIR, escape_dir,
 149               [Directories from which to load auto-loaded scripts.])
 150 AC_MSG_RESULT([$with_auto_load_dir])
 151
 152 AC_MSG_CHECKING([for default auto-load safe-path])
 153 AC_ARG_WITH(auto-load-safe-path,
 154 AS_HELP_STRING([--with-auto-load-safe-path=PATH],
 155   [directories safe to hold auto-loaded files @<:@--with-auto-load-dir@:>@])
 156 AS_HELP_STRING([--without-auto-load-safe-path],
 157                [do not restrict auto-loaded files locations]),
 158     [if test "$with_auto_load_safe_path" = "no"; then
 159      with_auto_load_safe_path="/"
 160      fi],
 161 [with_auto_load_safe_path="$with_auto_load_dir"])
 162 escape_dir=`echo $with_auto_load_safe_path | sed 's/[[$]]\(datadir\|debugdir\)\>/\\\\\\\\\\\\&/g'`
 163 AC_DEFINE_DIR(AUTO_LOAD_SAFE_PATH, escape_dir,
 164               [Directories safe to hold auto-loaded files.])
 165 AC_MSG_RESULT([$with_auto_load_safe_path])
 166
 167 AC_CONFIG_SUBDIRS(testsuite)
 168
 169 # Check whether to support alternative target configurations
 170 AC_ARG_ENABLE(targets,
 171 AS_HELP_STRING([--enable-targets=TARGETS], [alternative target configurations]),
 172 [case "${enableval}" in
 173   yes | "") AC_ERROR(enable-targets option must specify target names or 'all')
 174             ;;
 175   no)       enable_targets= ;;
 176   *)        enable_targets=$enableval ;;
 177 esac])
 178
 179 # Check whether to enable 64-bit support on 32-bit hosts
 180 AC_ARG_ENABLE(64-bit-bfd,
 181 AS_HELP_STRING([--enable-64-bit-bfd], [64-bit support (on hosts with narrower word sizes)]),
 182 [case "${enableval}" in
 183   yes)  want64=true  ;;
 184   no)   want64=false ;;
 185   *)    AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;;
 186 esac],[want64=false])dnl
 187
 188 # Provide defaults for some variables set by the per-host and per-target
 189 # configuration.
 190 gdb_host_obs=posix-hdep.o
 191
 192 if test "${target}" = "${host}"; then
 193   gdb_native=yes
 194 else
 195   gdb_native=no
 196 fi
 197
 198 . $srcdir/configure.host
 199
 200 # Accumulate some settings from configure.tgt over all enabled targets
 201
 202 TARGET_OBS=
 203 all_targets=
 204 HAVE_NATIVE_GCORE_TARGET=
 205
 206 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
 207 do
 208   if test "$targ_alias" = "all"; then
 209     all_targets=true
 210   else
 211     # Canonicalize the secondary target names.
 212     result=`$ac_config_sub $targ_alias 2>/dev/null`
 213     if test -n "$result"; then
 214         targ=$result
 215     else
 216         targ=$targ_alias
 217     fi
 218
 219     . ${srcdir}/configure.tgt
 220
 221     AS_IF([test -z "${gdb_target_obs}"],
 222       [AC_MSG_ERROR([configuration ${targ} is unsupported.])])
 223
 224     # Target-specific object files
 225     for i in ${gdb_target_obs}; do
 226         case " $TARGET_OBS " in
 227         *" ${i} "*) ;;
 228         *)
 229           TARGET_OBS="$TARGET_OBS ${i}"
 230           ;;
 231         esac
 232     done
 233
 234     # Check whether this target needs 64-bit CORE_ADDR
 235     if test x${want64} = xfalse; then
 236       . ${srcdir}/../bfd/config.bfd
 237     fi
 238
 239     # Check whether this target is native and supports gcore.
 240     if test $gdb_native = yes -a "$targ_alias" = "$target_alias" \
 241        && $gdb_have_gcore; then
 242       HAVE_NATIVE_GCORE_TARGET=1
 243     fi
 244   fi
 245 done
 246
 247 if test x${all_targets} = xtrue; then
 248
 249   # We want all 64-bit targets if we either:
 250   #  - run on a 64-bit host  or
 251   #  - already require 64-bit support for some other target  or
 252   #  - the --enable-64-bit-bfd option was supplied
 253   # Otherwise we only support all 32-bit targets.
 254   #
 255   # NOTE: This test must be in sync with the corresponding
 256   #       tests in BFD!
 257
 258   if test x${want64} = xfalse; then
 259     AC_CHECK_SIZEOF(long)
 260     if test "x${ac_cv_sizeof_long}" = "x8"; then
 261       want64=true
 262     fi
 263   fi
 264   if test x${want64} = xtrue; then
 265     TARGET_OBS='$(ALL_TARGET_OBS) $(ALL_64_TARGET_OBS)'
 266   else
 267     TARGET_OBS='$(ALL_TARGET_OBS)'
 268   fi
 269 fi
 270
 271 AC_SUBST(TARGET_OBS)
 272 AC_SUBST(HAVE_NATIVE_GCORE_TARGET)
 273
 274 # For other settings, only the main target counts.
 275 gdb_sim=
 276 gdb_osabi=
 277 build_gdbserver=
 278 targ=$target; . ${srcdir}/configure.tgt
 279
 280 # Fetch the default architecture and default target vector from BFD.
 281 targ=$target; . $srcdir/../bfd/config.bfd
 282
 283 # We only want the first architecture, so strip off the others if
 284 # there is more than one.
 285 targ_archs=`echo $targ_archs | sed 's/ .*//'`
 286
 287 if test "x$targ_archs" != x; then
 288   AC_DEFINE_UNQUOTED(DEFAULT_BFD_ARCH, $targ_archs,
 289     [Define to BFD's default architecture. ])
 290 fi
 291 if test "x$targ_defvec" != x; then
 292   AC_DEFINE_UNQUOTED(DEFAULT_BFD_VEC, $targ_defvec,
 293     [Define to BFD's default target vector. ])
 294 fi
 295
 296 # The CLI cannot be disabled yet, but may be in the future.
 297
 298 # Enable CLI.
 299 AC_ARG_ENABLE(gdbcli,
 300 AS_HELP_STRING([--disable-gdbcli], [disable command-line interface (CLI)]),
 301   [case $enableval in
 302     yes)
 303       ;;
 304     no)
 305       AC_MSG_ERROR([the command-line interface cannot be disabled yet]) ;;
 306     *)
 307       AC_MSG_ERROR([bad value $enableval for --enable-gdbcli]) ;;
 308   esac],
 309   [enable_gdbcli=yes])
 310 if test x"$enable_gdbcli" = xyes; then
 311   if test -d $srcdir/cli; then
 312     CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_CLI_OBS)"
 313     CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_CLI_DEPS)"
 314     CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_CLI_SRCS)"
 315     ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_CLI_CFLAGS)"
 316   fi
 317 fi
 318
 319 # Enable MI.
 320 AC_ARG_ENABLE(gdbmi,
 321 AS_HELP_STRING([--disable-gdbmi], [disable machine-interface (MI)]),
 322   [case $enableval in
 323     yes | no)
 324       ;;
 325     *)
 326       AC_MSG_ERROR([bad value $enableval for --enable-gdbmi]) ;;
 327   esac],
 328   [enable_gdbmi=yes])
 329 if test x"$enable_gdbmi" = xyes; then
 330   if test -d $srcdir/mi; then
 331     CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_MI_OBS)"
 332     CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_MI_DEPS)"
 333     CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_MI_SRCS)"
 334     ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_MI_CFLAGS)"
 335   fi
 336 fi
 337
 338 # Enable TUI.
 339 AC_ARG_ENABLE(tui,
 340 AS_HELP_STRING([--enable-tui], [enable full-screen terminal user interface (TUI)]),
 341   [case $enableval in
 342     yes | no | auto)
 343       ;;
 344     *)
 345       AC_MSG_ERROR([bad value $enableval for --enable-tui]) ;;
 346   esac],enable_tui=auto)
 347
 348 # Enable gdbtk.
 349 AC_ARG_ENABLE(gdbtk,
 350 AS_HELP_STRING([--enable-gdbtk], [enable gdbtk graphical user interface (GUI)]),
 351   [case $enableval in
 352     yes | no)
 353       ;;
 354     *)
 355       AC_MSG_ERROR([bad value $enableval for --enable-gdbtk]) ;;
 356   esac],
 357   [if test -d $srcdir/gdbtk; then
 358     enable_gdbtk=yes
 359   else
 360     enable_gdbtk=no
 361   fi])
 362 # We unconditionally disable gdbtk tests on selected platforms.
 363 case $host_os in
 364   go32* | windows*)
 365     AC_MSG_WARN([gdbtk isn't supported on $host; disabling])
 366     enable_gdbtk=no ;;
 367 esac
 368
 369 # Libunwind support for ia64.
 370
 371 AC_ARG_WITH(libunwind-ia64,
 372 AS_HELP_STRING([--with-libunwind-ia64],
 373                [use libunwind frame unwinding for ia64 targets]),,
 374             [with_libunwind_ia64=auto])
 375
 376 # Backward compatibility option.
 377 if test "${with_libunwind+set}" = set; then
 378   if test x"$with_libunwind_ia64" != xauto; then
 379     AC_MSG_ERROR(
 380       [option --with-libunwind is deprecated, use --with-libunwind-ia64])
 381   fi
 382   AC_MSG_WARN([option --with-libunwind is deprecated, use --with-libunwind-ia64])
 383   with_libunwind_ia64="$with_libunwind"
 384 fi
 385
 386 case "$with_libunwind_ia64" in
 387   yes | no)
 388     ;;
 389   auto)
 390     AC_CHECK_HEADERS(libunwind-ia64.h)
 391     with_libunwind_ia64=$ac_cv_header_libunwind_ia64_h
 392     ;;
 393   *)
 394     AC_MSG_ERROR(
 395       [bad value $with_libunwind_ia64 for GDB --with-libunwind-ia64 option])
 396     ;;
 397 esac
 398
 399 if test x"$with_libunwind_ia64" = xyes; then
 400   AC_CHECK_HEADERS(libunwind-ia64.h)
 401   if test x"$ac_cv_header_libunwind_ia64_h" != xyes; then
 402     AC_MSG_ERROR([GDB option --with-libunwind-ia64 requires libunwind-ia64.h])
 403   fi
 404   CONFIG_OBS="$CONFIG_OBS ia64-libunwind-tdep.o"
 405   CONFIG_DEPS="$CONFIG_DEPS ia64-libunwind-tdep.o"
 406   CONFIG_SRCS="$CONFIG_SRCS ia64-libunwind-tdep.c"
 407 fi
 408
 409 opt_curses=no
 410 AC_ARG_WITH(curses, AS_HELP_STRING([--with-curses], [use the curses library instead of the termcap library]), opt_curses=$withval)
 411
 412 prefer_curses=no
 413 if test "$opt_curses" = "yes"; then
 414   prefer_curses=yes
 415 fi
 416
 417 # Profiling support.
 418 AC_ARG_ENABLE(profiling,
 419 AS_HELP_STRING([--enable-profiling], [enable profiling of GDB]),
 420   [case $enableval in
 421     yes | no)
 422       ;;
 423     *)
 424       AC_MSG_ERROR([bad value $enableval for --enable-profile]) ;;
 425   esac],
 426  [enable_profiling=no])
 427
 428 AC_CHECK_FUNCS(monstartup _mcleanup)
 429 AC_CACHE_CHECK([for _etext], ac_cv_var__etext,
 430 [AC_TRY_LINK(
 431 [#include <stdlib.h>
 432 extern char _etext;
 433 ],
 434 [free (&_etext);], ac_cv_var__etext=yes, ac_cv_var__etext=no)])
 435 if test $ac_cv_var__etext = yes; then
 436   AC_DEFINE(HAVE__ETEXT, 1,
 437             [Define to 1 if your system has the _etext variable. ])
 438 fi
 439 AC_CACHE_CHECK([for etext], ac_cv_var_etext,
 440 [AC_TRY_LINK(
 441 [#include <stdlib.h>
 442 extern char etext;
 443 ],
 444 [free (&etext);], ac_cv_var_etext=yes, ac_cv_var_etext=no)])
 445 if test $ac_cv_var_etext = yes; then
 446   AC_DEFINE(HAVE_ETEXT, 1,
 447             [Define to 1 if your system has the etext variable. ])
 448 fi
 449 if test "$enable_profiling" = yes ; then
 450   if test $ac_cv_func_monstartup = no || test $ac_cv_func__mcleanup = no; then
 451     AC_MSG_ERROR(--enable-profiling requires monstartup and _mcleanup)
 452   fi
 453   PROFILE_CFLAGS=-pg
 454   OLD_CFLAGS="$CFLAGS"
 455   CFLAGS="$CFLAGS $PROFILE_CFLAGS"
 456
 457   AC_CACHE_CHECK([whether $CC supports -pg], ac_cv_cc_supports_pg,
 458     [AC_TRY_COMPILE([], [int x;], ac_cv_cc_supports_pg=yes,
 459      ac_cv_cc_supports_pg=no)])
 460
 461   if test $ac_cv_cc_supports_pg = no; then
 462     AC_MSG_ERROR(--enable-profiling requires a compiler which supports -pg)
 463   fi
 464
 465   CFLAGS="$OLD_CFLAGS"
 466 fi
 467
 468 ACX_PKGVERSION([GDB])
 469 ACX_BUGURL([http://www.gnu.org/software/gdb/bugs/])
 470 AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
 471 AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
 472
 473 # --------------------- #
 474 # Checks for programs.  #
 475 # --------------------- #
 476
 477 AC_PROG_AWK
 478 AC_PROG_INSTALL
 479 AC_PROG_LN_S
 480 AC_PROG_RANLIB
 481 AC_PROG_YACC
 482
 483 AC_CHECK_TOOL(AR, ar)
 484 AC_CHECK_TOOL(DLLTOOL, dlltool)
 485 AC_CHECK_TOOL(WINDRES, windres)
 486
 487 case $host_os in
 488   gnu*)
 489     # Needed for GNU Hurd hosts.
 490     AC_CHECK_TOOL(MIG, mig)
 491     if test x"$MIG" = x; then
 492       AC_MSG_ERROR([MIG not found but required for $host hosts])
 493     fi
 494     ;;
 495 esac
 496
 497 # ---------------------- #
 498 # Checks for libraries.  #
 499 # ---------------------- #
 500
 501 # We might need to link with -lm; most simulators need it.
 502 AC_CHECK_LIB(m, main)
 503
 504 # We need to link with -lw to get `wctype' on Solaris before Solaris
 505 # 2.6.  Solaris 2.6 and beyond have this function in libc, and have a
 506 # libw that some versions of the GNU linker cannot hanle (GNU ld 2.9.1
 507 # is known to have this problem).  Therefore we avoid libw if we can.
 508 AC_CHECK_FUNC(wctype, [],
 509   [AC_CHECK_LIB(w, wctype)])
 510
 511 # Some systems (e.g. Solaris) have `gethostbyname' in libnsl.
 512 AC_SEARCH_LIBS(gethostbyname, nsl)
 513
 514 # Some systems (e.g. Solaris) have `socketpair' in libsocket.
 515 AC_SEARCH_LIBS(socketpair, socket)
 516
 517 # Link in zlib if we can.  This allows us to read compressed debug sections.
 518 AM_ZLIB
 519
 520 # On HP/UX we may need libxpdl for dlgetmodinfo (used by solib-pa64.c).
 521 AC_SEARCH_LIBS(dlgetmodinfo, [dl xpdl])
 522
 523 AM_ICONV
 524
 525 # GDB may fork/exec the iconv program to get the list of supported character
 526 # sets.  Allow the user to specify where to find it.
 527 # There are several factors affecting the choice of option name:
 528 # - There is already --with-libiconv-prefix but we can't use it, it specifies
 529 #   the build-time location of libiconv files.
 530 # - The program we need to find is iconv, which comes with glibc.  The user
 531 #   doesn't necessarily have libiconv installed.  Therefore naming this
 532 #   --with-libiconv-foo feels wrong.
 533 # - We want the path to be relocatable, but GDB_AC_DEFINE_RELOCATABLE is
 534 #   defined to work on directories not files (though it really doesn't know
 535 #   the difference).
 536 # - Calling this --with-iconv-prefix is perceived to cause too much confusion
 537 #   with --with-libiconv-prefix.
 538 # Putting these together is why the option name is --with-iconv-bin.
 539
 540 AC_ARG_WITH(iconv-bin,
 541 AS_HELP_STRING([--with-iconv-bin=PATH], [specify where to find the iconv program]),
 542 [iconv_bin="${withval}"
 543  AC_DEFINE_UNQUOTED([ICONV_BIN], ["${iconv_bin}"],
 544                     [Path of directory of iconv program.])
 545  GDB_AC_DEFINE_RELOCATABLE(ICONV_BIN, iconv, ${iconv_bin})
 546 ])
 547
 548 # On alpha-osf, it appears that libtermcap and libcurses are not compatible.
 549 # There is a very specific comment in /usr/include/curses.h explaining that
 550 # termcap routines built into libcurses must not be used.
 551 #
 552 # The symptoms we observed so far is GDB unexpectedly changing
 553 # the terminal settings when tgetent is called - this is particularly
 554 # visible as the output is missing carriage returns, and so rapidly
 555 # becomes very hard to read.
 556 #
 557 # The readline configure script has already decided that libtermcap
 558 # was enough for its purposes, and so decided to build readline using
 559 # libtermcap.  Since the TUI mode requires curses, building GDB with
 560 # TUI enabled results in both libraries to be used at the same time,
 561 # which is not allowed.  This basically means that GDB with TUI is
 562 # broken on alpha-osf.
 563
 564 case $host_os in
 565   osf* )
 566     if test x"$enable_tui" = xyes; then
 567       AC_MSG_ERROR([Building GDB with TUI mode is not supported on this host])
 568     fi
 569     if test x"$enable_tui" = xauto; then
 570       enable_tui=no
 571     fi
 572     ;;
 573 esac
 574
 575 # For the TUI, we need enhanced curses functionality.
 576 if test x"$enable_tui" != xno; then
 577   prefer_curses=yes
 578 fi
 579
 580 curses_found=no
 581 if test x"$prefer_curses" = xyes; then
 582   # FIXME: kettenis/20040905: We prefer ncurses over the vendor-supplied
 583   # curses library because the latter might not provide all the
 584   # functionality we need.  However, this leads to problems on systems
 585   # where the linker searches /usr/local/lib, but the compiler doesn't
 586   # search /usr/local/include, if ncurses is installed in /usr/local.  A
 587   # default installation of ncurses on alpha*-dec-osf* will lead to such
 588   # a situation.
 589   AC_SEARCH_LIBS(waddstr, [ncurses cursesX curses])
 590
 591   if test "$ac_cv_search_waddstr" != no; then
 592     curses_found=yes
 593   fi
 594 fi
 595
 596 # Check whether we should enable the TUI, but only do so if we really
 597 # can.
 598 if test x"$enable_tui" != xno; then
 599   if test -d $srcdir/tui; then
 600     if test "$curses_found" != no; then
 601       CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_TUI_OBS)"
 602       CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_TUI_DEPS)"
 603       CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_TUI_SRCS)"
 604       ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_TUI_CFLAGS)"
 605     else
 606       if test x"$enable_tui" = xyes; then
 607         AC_MSG_ERROR([no enhanced curses library found; disable TUI])
 608       else
 609         AC_MSG_WARN([no enhanced curses library found; disabling TUI])
 610       fi
 611     fi
 612   fi
 613 fi
 614
 615 # Since GDB uses Readline, we need termcap functionality.  In many
 616 # cases this will be provided by the curses library, but some systems
 617 # have a seperate termcap library, or no curses library at all.
 618
 619 case $host_os in
 620   cygwin*)
 621     if test -d $srcdir/libtermcap; then
 622       LIBS="../libtermcap/libtermcap.a $LIBS"
 623       ac_cv_search_tgetent="../libtermcap/libtermcap.a"
 624     fi ;;
 625   go32* | *djgpp*)
 626     ac_cv_search_tgetent="none required"
 627     ;;
 628   *mingw32*)
 629     ac_cv_search_tgetent="none required"
 630     CONFIG_OBS="$CONFIG_OBS windows-termcap.o"
 631     ;;
 632 esac
 633
 634 # These are the libraries checked by Readline.
 635 AC_SEARCH_LIBS(tgetent, [termcap tinfo curses ncurses])
 636
 637 if test "$ac_cv_search_tgetent" = no; then
 638   AC_MSG_ERROR([no termcap library found])
 639 fi
 640
 641 AC_ARG_WITH([system-readline],
 642   [AS_HELP_STRING([--with-system-readline],
 643                   [use installed readline library])])
 644
 645 if test "$with_system_readline" = yes; then
 646   READLINE=-lreadline
 647   READLINE_DEPS=
 648   READLINE_CFLAGS=
 649   READLINE_TEXI_INCFLAG=
 650 else
 651   READLINE='$(READLINE_DIR)/libreadline.a'
 652   READLINE_DEPS='$(READLINE)'
 653   READLINE_CFLAGS='-I$(READLINE_SRC)/..'
 654   READLINE_TEXI_INCFLAG='-I $(READLINE_DIR)'
 655 fi
 656 AC_SUBST(READLINE)
 657 AC_SUBST(READLINE_DEPS)
 658 AC_SUBST(READLINE_CFLAGS)
 659 AC_SUBST(READLINE_TEXI_INCFLAG)
 660
 661 # Generate jit-reader.h
 662
 663 # This is typedeffed to GDB_CORE_ADDR in jit-reader.h
 664 TARGET_PTR=
 665
 666 AC_CHECK_SIZEOF(unsigned long long)
 667 AC_CHECK_SIZEOF(unsigned long)
 668 AC_CHECK_SIZEOF(unsigned __int128)
 669
 670 if test "x${ac_cv_sizeof_unsigned_long}" = "x8"; then
 671   TARGET_PTR="unsigned long"
 672 elif test "x${ac_cv_sizeof_unsigned_long_long}" = "x8"; then
 673   TARGET_PTR="unsigned long long"
 674 elif test "x${ac_cv_sizeof_unsigned___int128}" = "x16"; then
 675   TARGET_PTR="unsigned __int128"
 676 else
 677   TARGET_PTR="unsigned long"
 678 fi
 679
 680 AC_SUBST(TARGET_PTR)
 681 AC_CONFIG_FILES([jit-reader.h:jit-reader.in])
 682
 683 AC_SEARCH_LIBS(dlopen, dl)
 684
 685 GDB_AC_WITH_DIR([JIT_READER_DIR], [jit-reader-dir],
 686                 [directory to load the JIT readers from],
 687                 [${libdir}/gdb])
 688
 689 AC_ARG_WITH(expat,
 690   AS_HELP_STRING([--with-expat], [include expat support (auto/yes/no)]),
 691   [], [with_expat=auto])
 692 AC_MSG_CHECKING([whether to use expat])
 693 AC_MSG_RESULT([$with_expat])
 694
 695 if test "${with_expat}" = no; then
 696   AC_MSG_WARN([expat support disabled; some features may be unavailable.])
 697   HAVE_LIBEXPAT=no
 698 else
 699   AC_LIB_HAVE_LINKFLAGS([expat], [], [#include "expat.h"],
 700                         [XML_Parser p = XML_ParserCreate (0);])
 701   if test "$HAVE_LIBEXPAT" != yes; then
 702     if test "$with_expat" = yes; then
 703       AC_MSG_ERROR([expat is missing or unusable])
 704     else
 705       AC_MSG_WARN([expat is missing or unusable; some features may be unavailable.])
 706     fi
 707   else
 708     save_LIBS=$LIBS
 709     LIBS="$LIBS $LIBEXPAT"
 710     AC_CHECK_FUNCS(XML_StopParser)
 711     LIBS=$save_LIBS
 712   fi
 713 fi
 714
 715 dnl Utility to simplify finding libpython.
 716 dnl $1 = pythonX.Y
 717 dnl $2 = the shell variable to assign the result to
 718 dnl      If libpython is found we store $version here.
 719 dnl $3 = additional flags to add to CPPFLAGS
 720 dnl $4 = additional flags to add to LIBS
 721
 722 AC_DEFUN([AC_TRY_LIBPYTHON],
 723 [
 724   version=$1
 725   define([have_libpython_var],$2)
 726   new_CPPFLAGS=$3
 727   new_LIBS=$4
 728   AC_MSG_CHECKING([for ${version}])
 729   save_CPPFLAGS=$CPPFLAGS
 730   save_LIBS=$LIBS
 731   CPPFLAGS="$CPPFLAGS $new_CPPFLAGS"
 732   LIBS="$LIBS $new_LIBS"
 733   found_usable_python=no
 734   AC_LINK_IFELSE(AC_LANG_PROGRAM([[#include "Python.h"]],
 735                                  [[Py_Initialize ();]]),
 736                  [have_libpython_var=${version}
 737                   found_usable_python=yes
 738                   PYTHON_CPPFLAGS=$new_CPPFLAGS
 739                   PYTHON_LIBS=$new_LIBS])
 740   CPPFLAGS=$save_CPPFLAGS
 741   LIBS=$save_LIBS
 742   AC_MSG_RESULT([${found_usable_python}])
 743 ])
 744
 745 dnl There are several different values for --with-python:
 746 dnl
 747 dnl no -   Don't include python support.
 748 dnl yes -  Include python support, error if it's missing.
 749 dnl        If we find python in $PATH, use it to fetch configure options,
 750 dnl        otherwise assume the compiler can find it with no help from us.
 751 dnl        Python 2.7, 2.6, 2.5, and then 2.4 are tried in turn.
 752 dnl auto - Same as "yes", but if python is missing from the system,
 753 dnl        fall back to "no".
 754 dnl /path/to/python/exec-prefix -
 755 dnl        Use the python located in this directory.
 756 dnl        If /path/to/python/exec-prefix/bin/python exists, use it to find
 757 dnl        the compilation parameters.  Otherwise use
 758 dnl        -I/path/to/python/exec-prefix/include,
 759 dnl        -L/path/to/python/exec-prefix/lib.
 760 dnl        Python 2.7, 2.6, 2.5, and then 2.4 are tried in turn.
 761 dnl        NOTE: This case is historical.  It is what was done for 7.0/7.1
 762 dnl        but is deprecated.
 763 dnl /path/to/python/executable -
 764 dnl        Run python-config.py with this version of python to fetch the
 765 dnl        compilation parameters.
 766 dnl        NOTE: This needn't be the real python executable.
 767 dnl        In a cross-compilation scenario (build != host), this could be
 768 dnl        a shell script that provides what python-config.py provides for
 769 dnl        --ldflags, --includes, --exec-prefix.
 770 dnl python-executable -
 771 dnl        Find python-executable in $PATH, and then handle the same as
 772 dnl        /path/to/python/executable.
 773 dnl
 774 dnl If a python program is specified, it is used to run python-config.py and
 775 dnl is passed --ldflags, --includes, --exec-prefix.
 776
 777 AC_ARG_WITH(python,
 778   AS_HELP_STRING([--with-python@<:@=PYTHON@:>@], [include python support (auto/yes/no/<python-program>)]),
 779   [], [with_python=auto])
 780 AC_MSG_CHECKING([whether to use python])
 781 AC_MSG_RESULT([$with_python])
 782
 783 if test "${with_python}" = no; then
 784   AC_MSG_WARN([python support disabled; some features may be unavailable.])
 785   have_libpython=no
 786 else
 787   case "${with_python}" in
 788   [[\\/]]* | ?:[[\\/]]*)
 789     if test -d ${with_python}; then
 790       # Assume the python binary is ${with_python}/bin/python.
 791       python_prog="${with_python}/bin/python"
 792       python_prefix=
 793       # If python does not exit ${with_python}/bin, then try in
 794       # ${with_python}.  On Windows/MinGW, this is where the Python
 795       # executable is.
 796       if test ! -x "${python_prog}"; then
 797         python_prog="${with_python}/python"
 798         python_prefix=
 799       fi
 800       if test ! -x "${python_prog}"; then
 801         # Fall back to gdb 7.0/7.1 behaviour.
 802         python_prog=missing
 803         python_prefix=${with_python}
 804       fi
 805     elif test -x "${with_python}"; then
 806       # While we can't run python compiled for $host (unless host == build),
 807       # the user could write a script that provides the needed information,
 808       # so we support that.
 809       python_prog=${with_python}
 810       python_prefix=
 811     else
 812       AC_ERROR(invalid value for --with-python)
 813     fi
 814     ;;
 815   */*)
 816     # Disallow --with-python=foo/bar.
 817     AC_ERROR(invalid value for --with-python)
 818     ;;
 819   *)
 820     # The user has either specified auto, yes, or the name of the python
 821     # program assumed to be in $PATH.
 822     python_prefix=
 823     case "${with_python}" in
 824     yes | auto)
 825       if test ${build} = ${host}; then
 826         AC_PATH_PROG(python_prog_path, python, missing)
 827         if test "${python_prog_path}" = missing; then
 828           python_prog=missing
 829         else
 830           python_prog=${python_prog_path}
 831         fi
 832       else
 833         # Not much we can do except assume the cross-compiler will find the
 834         # right files.
 835         python_prog=missing
 836       fi
 837       ;;
 838     *)
 839       # While we can't run python compiled for $host (unless host == build),
 840       # the user could write a script that provides the needed information,
 841       # so we support that.
 842       python_prog="${with_python}"
 843       AC_PATH_PROG(python_prog_path, ${python_prog}, missing)
 844       if test "${python_prog_path}" = missing; then
 845         AC_ERROR(unable to find python program ${python_prog})
 846       fi
 847       ;;
 848     esac
 849   esac
 850
 851   if test "${python_prog}" != missing; then
 852     # We have a python program to use, but it may be too old.
 853     # Don't flag an error for --with-python=auto (the default).
 854     have_python_config=yes
 855     python_includes=`${python_prog} ${srcdir}/python/python-config.py --includes`
 856     if test $? != 0; then
 857       have_python_config=failed
 858       if test "${with_python}" != auto; then
 859         AC_ERROR(failure running python-config --includes)
 860       fi
 861     fi
 862     python_libs=`${python_prog} ${srcdir}/python/python-config.py --ldflags`
 863     if test $? != 0; then
 864       have_python_config=failed
 865       if test "${with_python}" != auto; then
 866         AC_ERROR(failure running python-config --ldflags)
 867       fi
 868     fi
 869     python_prefix=`${python_prog} ${srcdir}/python/python-config.py --exec-prefix`
 870     if test $? != 0; then
 871       have_python_config=failed
 872       if test "${with_python}" != auto; then
 873         AC_ERROR(failure running python-config --exec-prefix)
 874       fi
 875     fi
 876   else
 877     # We do not have a python executable we can use to determine where
 878     # to find the Python headers and libs.  We cannot guess the include
 879     # path from the python_prefix either, because that include path
 880     # depends on the Python version.  So, there is nothing much we can
 881     # do except assume that the compiler will be able to find those files.
 882     python_includes=
 883     python_libs=
 884     have_python_config=no
 885   fi
 886
 887   # If we have python-config, only try the configuration it provides.
 888   # Otherwise fallback on the old way of trying different versions of
 889   # python in turn.
 890
 891   have_libpython=no
 892   if test "${have_python_config}" = yes; then
 893     # Determine the Python version by extracting "-lpython<version>"
 894     # part of the python_libs. <version> is usually X.Y with X and Y
 895     # being decimal numbers, but can also be XY (seen on Windows).
 896     #
 897     # The extraction is performed using sed with a regular expression.
 898     # Initially, the regexp used was using the '?' quantifier to make
 899     # the dot in the version number optional.  Unfortunately, this
 900     # does not work with non-GNU versions of sed because, because of
 901     # what looks like a limitation (the '?' quantifier does not work
 902     # with back-references).  We work around this limitation by using
 903     # the '*' quantifier instead.  It means that, in theory, we might
 904     # match unexpected version strings such as "-lpython2..7", but
 905     # this seems unlikely in practice.  And even if that happens,
 906     # an error will be triggered later on, when checking that version
 907     # number.
 908     python_version=`echo " ${python_libs} " \
 909                          | sed -e 's,^.* -l\(python[[0-9]]*[[.]]*[[0-9]]*\).*$,\1,'`
 910     case "${python_version}" in
 911     python*)
 912       AC_TRY_LIBPYTHON(${python_version}, have_libpython,
 913                        ${python_includes}, ${python_libs})
 914       ;;
 915     *)
 916       AC_MSG_ERROR([unable to determine python version from ${python_libs}])
 917       ;;
 918     esac
 919   elif test "${have_python_config}" != failed; then
 920     if test "${have_libpython}" = no; then
 921       AC_TRY_LIBPYTHON(python2.7, have_libpython,
 922                        ${python_includes}, "${python_libs} -lpython2.7")
 923     fi
 924     if test "${have_libpython}" = no; then
 925       AC_TRY_LIBPYTHON(python2.6, have_libpython,
 926                        ${python_includes}, "${python_libs} -lpython2.6")
 927     fi
 928     if test ${have_libpython} = no; then
 929       AC_TRY_LIBPYTHON(python2.5, have_libpython,
 930                        ${python_includes}, "${python_libs} -lpython2.5")
 931     fi
 932     if test ${have_libpython} = no; then
 933       AC_TRY_LIBPYTHON(python2.4, have_libpython,
 934                        ${python_includes}, "${python_libs} -lpython2.4")
 935     fi
 936   fi
 937   if test "${have_libpython}" = python2.7 -o "${have_libpython}" = python27; then
 938     AC_DEFINE(HAVE_LIBPYTHON2_7, 1, [Define if Python 2.7 is being used.])
 939   elif test "${have_libpython}" = python2.6 -o "${have_libpython}" = python26; then
 940     AC_DEFINE(HAVE_LIBPYTHON2_6, 1, [Define if Python 2.6 is being used.])
 941   elif test "${have_libpython}" = python2.5 -o "${have_libpython}" = python25; then
 942     AC_DEFINE(HAVE_LIBPYTHON2_5, 1, [Define if Python 2.5 is being used.])
 943   elif test "${have_libpython}" = python2.4 -o "${have_libpython}" = python24; then
 944     AC_DEFINE(HAVE_LIBPYTHON2_4, 1, [Define if Python 2.4 is being used.])
 945   fi
 946
 947   if test "${have_libpython}" = no; then
 948     case "${with_python}" in
 949     yes)
 950       AC_MSG_ERROR([python is missing or unusable])
 951       ;;
 952     auto)
 953       AC_MSG_WARN([python is missing or unusable; some features may be unavailable.])
 954       ;;
 955     *)
 956       AC_MSG_ERROR([no usable python found at ${with_python}])
 957       ;;
 958     esac
 959   else
 960     if test -n "${python_prefix}"; then
 961       AC_DEFINE_UNQUOTED(WITH_PYTHON_PATH, "${python_prefix}",
 962                          [Define if --with-python provides a path, either directly or via python-config.py --exec-prefix.])
 963       GDB_AC_DEFINE_RELOCATABLE(PYTHON_PATH, python, ${python_prefix})
 964     fi
 965   fi
 966 fi
 967
 968 if test "${have_libpython}" != no; then
 969   AC_DEFINE(HAVE_PYTHON, 1, [Define if Python interpreter is being linked in.])
 970   CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_PYTHON_OBS)"
 971   CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_PYTHON_DEPS)"
 972   CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_PYTHON_SRCS)"
 973   CONFIG_INSTALL="$CONFIG_INSTALL install-python"
 974   ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_PYTHON_CFLAGS)"
 975
 976   # Flags needed to compile Python code (taken from python-config --cflags).
 977   # We cannot call python-config directly because it will output whatever was
 978   # used when compiling the Python interpreter itself, including flags which
 979   # would make the python-related objects be compiled differently from the
 980   # rest of GDB (e.g., -O2 and -fPIC).
 981   if test "${GCC}" = yes; then
 982     tentative_python_cflags="-fno-strict-aliasing -DNDEBUG -fwrapv"
 983   fi
 984
 985   if test "x${tentative_python_cflags}" != x; then
 986     AC_MSG_CHECKING(compiler flags for python code)
 987     for flag in ${tentative_python_cflags}; do
 988       # Check that the compiler accepts it
 989       saved_CFLAGS="$CFLAGS"
 990       CFLAGS="$CFLAGS $flag"
 991       AC_TRY_COMPILE([],[],PYTHON_CFLAGS="${PYTHON_CFLAGS} $flag",)
 992       CFLAGS="$saved_CFLAGS"
 993     done
 994     AC_MSG_RESULT(${PYTHON_CFLAGS})
 995   fi
 996
 997   # On IRIX, type siginfo is not defined.  Instead, sys/siginfo.h provides:
 998   #    #if _SGIAPI
 999   #    #define siginfo __siginfo
1000   #    #endif
1001   # The problem is that including Python causes some XOPEN macros to be
1002   # unilaterally defined, and that in turn causes _SGIAPI to evaluate
1003   # to false.  So, we work around this issue by defining siginfo ourself
1004   # though the command-line.
1005   #
1006   # On x64 Windows, Python's include headers, and pyconfig.h in
1007   # particular, rely on MS_WIN64 macro to detect that it's a 64bit
1008   # version of Windows.  Unfortunately, MS_WIN64 is only defined if
1009   # _MSC_VER, a Microsoft-specific macro, is defined.  So, when
1010   # building on x64 Windows with GCC, we define MS_WIN64 ourselves.
1011   # The issue was reported to the Python community, but still isn't
1012   # solved as of 2012-10-02 (http://bugs.python.org/issue4709).
1013
1014   case "$gdb_host" in
1015     irix*) if test "${GCC}" = yes; then
1016              CPPFLAGS="$CPPFLAGS -Dsiginfo=__siginfo"
1017            fi
1018            ;;
1019     mingw64)
1020            if test "${GCC}" = yes; then
1021              CPPFLAGS="$CPPFLAGS -DMS_WIN64"
1022            fi
1023            ;;
1024   esac
1025
1026   # Note that "python -m threading" cannot be used to check for
1027   # threading support due to a bug in Python 2.7.3
1028   # (http://bugs.python.org/issue15567).
1029   AC_MSG_CHECKING(whether python supports threads)
1030   saved_CPPFLAGS="${CPPFLAGS}"
1031   CPPFLAGS="${PYTHON_CPPFLAGS}"
1032   # Note that the test is reversed so that python_has_threads=yes on
1033   # unexpected failures.
1034   AC_PREPROC_IFELSE(AC_LANG_SOURCE([[
1035 #include <Python.h>
1036 #ifdef WITH_THREAD
1037 # error
1038 #endif
1039   ]]), [python_has_threads=no], [python_has_threads=yes])
1040   AC_MSG_RESULT(${python_has_threads})
1041   CPPFLAGS="${saved_CPPFLAGS}"
1042 else
1043   # Even if Python support is not compiled in, we need to have these files
1044   # included.
1045   CONFIG_OBS="$CONFIG_OBS python.o py-value.o py-prettyprint.o py-auto-load.o"
1046   CONFIG_SRCS="$CONFIG_SRCS python/python.c python/py-value.c \
1047         python/py-prettyprint.c python/py-auto-load.c"
1048 fi
1049 AC_SUBST(PYTHON_CFLAGS)
1050 AC_SUBST(PYTHON_CPPFLAGS)
1051 AC_SUBST(PYTHON_LIBS)
1052
1053 # Enable -lmcheck by default (it provides cheap-enough memory mangling),
1054 # but turn it off if Python is enabled with threads, since -lmcheck is
1055 # not thread safe (http://sourceware.org/bugzilla/show_bug.cgi?id=9939),
1056 # and for releases.
1057 if test \( "${have_libpython}" = "no" -o "${python_has_threads}" = "no" \) \
1058    && $development; then
1059   libmcheck_default=yes
1060 else
1061   libmcheck_default=no
1062 fi
1063 GDB_AC_LIBMCHECK(${libmcheck_default})
1064
1065 if test "$ENABLE_LIBMCHECK" = "yes" \
1066         -a "${have_libpython}" != "no" \
1067         -a "${python_has_threads}" = "yes" ; then
1068   AC_MSG_WARN(--enable-libmcheck may lead to spurious crashes if threads are used in python)
1069 fi
1070
1071 # ------------------------- #
1072 # Checks for header files.  #
1073 # ------------------------- #
1074
1075 AC_HEADER_DIRENT
1076 AC_HEADER_STDC
1077 # elf_hp.h is for HP/UX 64-bit shared library support.
1078 AC_CHECK_HEADERS([nlist.h machine/reg.h poll.h sys/poll.h sys/socket.h proc_service.h \
1079                   thread_db.h signal.h stddef.h \
1080                   stdlib.h string.h memory.h strings.h sys/fault.h \
1081                   sys/file.h sys/filio.h sys/ioctl.h sys/param.h \
1082                   sys/resource.h sys/procfs.h sys/ptrace.h ptrace.h \
1083                   sys/reg.h sys/debugreg.h sys/select.h sys/syscall.h \
1084                   sys/types.h sys/wait.h wait.h termios.h termio.h \
1085                   sgtty.h unistd.h elf_hp.h locale.h \
1086                   dlfcn.h sys/un.h linux/perf_event.h])
1087 AC_CHECK_HEADERS(link.h, [], [],
1088 [#if HAVE_SYS_TYPES_H
1089 # include <sys/types.h>
1090 #endif
1091 #if HAVE_NLIST_H
1092 # include <nlist.h>
1093 #endif
1094 ])
1095 AC_CHECK_HEADERS(sys/proc.h, [], [],
1096 [#if HAVE_SYS_PARAM_H
1097 # include <sys/param.h>
1098 #endif
1099 ])
1100 AC_CHECK_HEADERS(sys/user.h, [], [],
1101 [#if HAVE_SYS_PARAM_H
1102 # include <sys/param.h>
1103 #endif
1104 ])
1105
1106 # On Solaris 2.[789], we need to define _MSE_INT_H to avoid a clash
1107 # between <widec.h> and <wchar.h> that would cause AC_CHECK_HEADERS to
1108 # think that we don't have <curses.h> if we're using GCC.
1109 case $host_os in
1110   solaris2.[[789]])
1111     if test "$GCC" = yes; then
1112       AC_DEFINE(_MSE_INT_H, 1,
1113         [Define to 1 to avoid a clash between <widec.h> and <wchar.h> on
1114    Solaris 2.[789] when using GCC. ])
1115     fi ;;
1116 esac
1117 AC_CHECK_HEADERS(curses.h cursesX.h ncurses.h ncurses/ncurses.h ncurses/term.h)
1118 AC_CHECK_HEADERS(term.h, [], [],
1119 [#if HAVE_CURSES_H
1120 # include <curses.h>
1121 #endif
1122 ])
1123
1124 # ------------------------- #
1125 # Checks for declarations.  #
1126 # ------------------------- #
1127
1128 AC_CHECK_DECLS([free, malloc, realloc, strerror, strstr, getopt,
1129                 snprintf, vsnprintf])
1130 AM_LC_MESSAGES
1131
1132 # ----------------------- #
1133 # Checks for structures.  #
1134 # ----------------------- #
1135
1136 AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize])
1137
1138 # ------------------ #
1139 # Checks for types.  #
1140 # ------------------ #
1141
1142 AC_TYPE_SIGNAL
1143 AC_CHECK_TYPES(socklen_t, [], [],
1144 [#include <sys/types.h>
1145 #include <sys/socket.h>
1146 ])
1147
1148 # ------------------------------------- #
1149 # Checks for compiler characteristics.  #
1150 # ------------------------------------- #
1151
1152 AC_C_CONST
1153 AC_C_INLINE
1154 AC_C_BIGENDIAN
1155
1156 # ------------------------------ #
1157 # Checks for library functions.  #
1158 # ------------------------------ #
1159
1160 AC_FUNC_ALLOCA
1161 AC_FUNC_MMAP
1162 AC_FUNC_VFORK
1163 AC_CHECK_FUNCS([canonicalize_file_name realpath getrusage getuid getgid \
1164                 pipe poll pread pread64 pwrite readlink resize_term \
1165                 sbrk setpgid setpgrp setsid \
1166                 sigaction sigprocmask sigsetmask socketpair syscall \
1167                 ttrace wborder wresize setlocale iconvlist libiconvlist btowc \
1168                 setrlimit getrlimit posix_madvise waitpid lstat \
1169                 fdwalk pipe2 ptrace64])
1170 AM_LANGINFO_CODESET
1171 GDB_AC_COMMON
1172
1173 # Check the return and argument types of ptrace.  No canned test for
1174 # this, so roll our own.
1175 gdb_ptrace_headers='
1176 #if HAVE_SYS_TYPES_H
1177 # include <sys/types.h>
1178 #endif
1179 #if HAVE_SYS_PTRACE_H
1180 # include <sys/ptrace.h>
1181 #endif
1182 #if HAVE_UNISTD_H
1183 # include <unistd.h>
1184 #endif
1185 '
1186 # There is no point in checking if we don't have a prototype.
1187 AC_CHECK_DECLS(ptrace, [], [
1188   : ${gdb_cv_func_ptrace_ret='int'}
1189   : ${gdb_cv_func_ptrace_args='int,int,long,long'}
1190 ], $gdb_ptrace_headers)
1191 # Check return type.  Varargs (used on GNU/Linux) conflict with the
1192 # empty argument list, so check for that explicitly.
1193 AC_CACHE_CHECK([return type of ptrace], gdb_cv_func_ptrace_ret,
1194   AC_TRY_COMPILE($gdb_ptrace_headers,
1195     [extern long ptrace (enum __ptrace_request, ...);],
1196     gdb_cv_func_ptrace_ret='long',
1197     AC_TRY_COMPILE($gdb_ptrace_headers,
1198       [extern int ptrace ();],
1199       gdb_cv_func_ptrace_ret='int',
1200       gdb_cv_func_ptrace_ret='long')))
1201 AC_DEFINE_UNQUOTED(PTRACE_TYPE_RET, $gdb_cv_func_ptrace_ret,
1202   [Define as the return type of ptrace.])
1203 # Check argument types.
1204 AC_CACHE_CHECK([types of arguments for ptrace], gdb_cv_func_ptrace_args, [
1205   AC_TRY_COMPILE($gdb_ptrace_headers,
1206     [extern long ptrace (enum __ptrace_request, ...);],
1207     [gdb_cv_func_ptrace_args='int,int,long,long'],[
1208 for gdb_arg1 in 'int' 'long'; do
1209  for gdb_arg2 in 'pid_t' 'int' 'long'; do
1210   for gdb_arg3 in 'int *' 'caddr_t' 'int' 'long' 'void *'; do
1211    for gdb_arg4 in 'int' 'long' 'void *'; do
1212      AC_TRY_COMPILE($gdb_ptrace_headers, [
1213 extern $gdb_cv_func_ptrace_ret
1214   ptrace ($gdb_arg1, $gdb_arg2, $gdb_arg3, $gdb_arg4);
1215 ], [gdb_cv_func_ptrace_args="$gdb_arg1,$gdb_arg2,$gdb_arg3,$gdb_arg4";
1216     break 4;])
1217     for gdb_arg5 in 'int *' 'int' 'long'; do
1218      AC_TRY_COMPILE($gdb_ptrace_headers, [
1219 extern $gdb_cv_func_ptrace_ret
1220   ptrace ($gdb_arg1, $gdb_arg2, $gdb_arg3, $gdb_arg4, $gdb_arg5);
1221 ], [
1222 gdb_cv_func_ptrace_args="$gdb_arg1,$gdb_arg2,$gdb_arg3,$gdb_arg4,$gdb_arg5";
1223     break 5;])
1224     done
1225    done
1226   done
1227  done
1228 done
1229 # Provide a safe default value.
1230 : ${gdb_cv_func_ptrace_args='int,int,long,long'}
1231 ])])
1232 ac_save_IFS=$IFS; IFS=','
1233 set dummy `echo "$gdb_cv_func_ptrace_args" | sed 's/\*/\*/g'`
1234 IFS=$ac_save_IFS
1235 shift
1236 AC_DEFINE_UNQUOTED(PTRACE_TYPE_ARG3, $[3],
1237   [Define to the type of arg 3 for ptrace.])
1238 AC_DEFINE_UNQUOTED(PTRACE_TYPE_ARG4, $[4],
1239   [Define to the type of arg 4 for ptrace.])
1240 if test -n "$[5]"; then
1241   AC_DEFINE_UNQUOTED(PTRACE_TYPE_ARG5, $[5],
1242     [Define to the type of arg 5 for ptrace.])
1243 fi
1244
1245 dnl AC_FUNC_SETPGRP does not work when cross compiling
1246 dnl Instead, assume we will have a prototype for setpgrp if cross compiling.
1247 if test "$cross_compiling" = no; then
1248   AC_FUNC_SETPGRP
1249 else
1250   AC_CACHE_CHECK([whether setpgrp takes no argument], ac_cv_func_setpgrp_void,
1251     [AC_TRY_COMPILE([
1252 #include <unistd.h>
1253 ], [
1254   if (setpgrp(1,1) == -1)
1255     exit (0);
1256   else
1257     exit (1);
1258 ], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes)])
1259 if test $ac_cv_func_setpgrp_void = yes; then
1260   AC_DEFINE(SETPGRP_VOID, 1)
1261 fi
1262 fi
1263
1264 # Check if sigsetjmp is available.  Using AC_CHECK_FUNCS won't do
1265 # since sigsetjmp might only be defined as a macro.
1266 AC_CACHE_CHECK([for sigsetjmp], gdb_cv_func_sigsetjmp,
1267 [AC_TRY_COMPILE([
1268 #include <setjmp.h>
1269 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
1270 gdb_cv_func_sigsetjmp=yes, gdb_cv_func_sigsetjmp=no)])
1271 if test $gdb_cv_func_sigsetjmp = yes; then
1272   AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
1273 fi
1274
1275 # Assume we'll default to using the included libiberty regex.
1276 gdb_use_included_regex=yes
1277
1278 # However, if the system regex is GNU regex, then default to *not*
1279 # using the included regex.
1280 AC_CACHE_CHECK(
1281   [for GNU regex],
1282   [gdb_cv_have_gnu_regex],
1283   [AC_TRY_COMPILE(
1284     [#include <gnu-versions.h>],
1285     [#define REGEX_INTERFACE_VERSION 1
1286 #if _GNU_REGEX_INTERFACE_VERSION != REGEX_INTERFACE_VERSION
1287 # error "Version mismatch"
1288 #endif],
1289     gdb_cv_have_gnu_regex=yes,
1290     gdb_cv_have_gnu_regex=no)])
1291 if test $gdb_cv_have_gnu_regex = yes; then
1292   gdb_use_included_regex=no
1293 fi
1294
1295 AC_ARG_WITH(included-regex,
1296   AS_HELP_STRING([--without-included-regex], [don't use included regex; this is the default on systems with version 2 of the GNU C library (use with caution on other system)]),
1297   gdb_with_regex=$withval,
1298   gdb_with_regex=$gdb_use_included_regex)
1299 if test "$gdb_with_regex" = yes; then
1300   AC_DEFINE(USE_INCLUDED_REGEX, 1,
1301     [Define to 1 if the regex included in libiberty should be used.])
1302 fi
1303
1304 # Check if <sys/proc.h> defines `struct thread' with a td_pcb member.
1305 AC_CHECK_MEMBERS([struct thread.td_pcb], [], [],
1306 [#include <sys/param.h>
1307 #include <sys/proc.h>
1308 ])
1309
1310 # See if <sys/lwp.h> defines `struct lwp`.
1311 AC_CACHE_CHECK([for struct lwp], gdb_cv_struct_lwp,
1312 [AC_TRY_COMPILE([#include <sys/param.h>
1313 #include <sys/lwp.h>], [struct lwp l;],
1314 gdb_cv_struct_lwp=yes, gdb_cv_struct_lwp=no)])
1315 if test $gdb_cv_struct_lwp = yes; then
1316   AC_DEFINE(HAVE_STRUCT_LWP, 1,
1317             [Define to 1 if your system has struct lwp.])
1318 fi
1319
1320 # See if <machine/reg.h> degines `struct reg'.
1321 AC_CACHE_CHECK([for struct reg in machine/reg.h], gdb_cv_struct_reg,
1322 [AC_TRY_COMPILE([#include <sys/types.h>
1323 #include <machine/reg.h>], [struct reg r;],
1324 gdb_cv_struct_reg=yes, gdb_cv_struct_reg=no)])
1325 if test $gdb_cv_struct_reg = yes; then
1326   AC_DEFINE(HAVE_STRUCT_REG, 1,
1327             [Define to 1 if your system has struct reg in <machine/reg.h>.])
1328 fi
1329
1330 # See if <machine/reg.h> supports the %fs and %gs i386 segment registers.
1331 # Older i386 BSD's don't have the r_fs and r_gs members of `struct reg'.
1332 AC_CHECK_MEMBERS([struct reg.r_fs, struct reg.r_gs], [], [],
1333                  [#include <machine/reg.h>])
1334
1335 # See if <sys/user.h> supports the %fs_base and %gs_bas amd64 segment registers.
1336 # Older amd64 Linux's don't have the fs_base and gs_base members of
1337 # `struct user_regs_struct'.
1338 AC_CHECK_MEMBERS([struct user_regs_struct.fs_base, struct user_regs_struct.gs_base],
1339                  [], [], [#include <sys/user.h>])
1340
1341 # See if <sys/ptrace.h> provides the PTRACE_GETREGS request.
1342 AC_MSG_CHECKING(for PTRACE_GETREGS)
1343 AC_CACHE_VAL(gdb_cv_have_ptrace_getregs,
1344 [AC_TRY_COMPILE([#include <sys/ptrace.h>],
1345                 [PTRACE_GETREGS;],
1346                 [gdb_cv_have_ptrace_getregs=yes],
1347                 [gdb_cv_have_ptrace_getregs=no])])
1348 AC_MSG_RESULT($gdb_cv_have_ptrace_getregs)
1349 if test $gdb_cv_have_ptrace_getregs = yes; then
1350   AC_DEFINE(HAVE_PTRACE_GETREGS, 1,
1351   [Define if sys/ptrace.h defines the PTRACE_GETREGS request.])
1352 fi
1353
1354 # See if <sys/ptrace.h> provides the PTRACE_GETFPXREGS request.
1355 AC_MSG_CHECKING(for PTRACE_GETFPXREGS)
1356 AC_CACHE_VAL(gdb_cv_have_ptrace_getfpxregs,
1357 [AC_TRY_COMPILE([#include <sys/ptrace.h>],
1358                 [PTRACE_GETFPXREGS;],
1359                 [gdb_cv_have_ptrace_getfpxregs=yes],
1360                 [gdb_cv_have_ptrace_getfpxregs=no])])
1361 AC_MSG_RESULT($gdb_cv_have_ptrace_getfpxregs)
1362 if test $gdb_cv_have_ptrace_getfpxregs = yes; then
1363   AC_DEFINE(HAVE_PTRACE_GETFPXREGS, 1,
1364   [Define if sys/ptrace.h defines the PTRACE_GETFPXREGS request.])
1365 fi
1366
1367 # See if <sys/ptrace.h> provides the PT_GETDBREGS request.
1368 AC_MSG_CHECKING(for PT_GETDBREGS)
1369 AC_CACHE_VAL(gdb_cv_have_pt_getdbregs,
1370 [AC_TRY_COMPILE([#include <sys/types.h>
1371 #include <sys/ptrace.h>],
1372                 [PT_GETDBREGS;],
1373                 [gdb_cv_have_pt_getdbregs=yes],
1374                 [gdb_cv_have_pt_getdbregs=no])])
1375 AC_MSG_RESULT($gdb_cv_have_pt_getdbregs)
1376 if test $gdb_cv_have_pt_getdbregs = yes; then
1377   AC_DEFINE(HAVE_PT_GETDBREGS, 1,
1378   [Define if sys/ptrace.h defines the PT_GETDBREGS request.])
1379 fi
1380
1381 # See if <sys/ptrace.h> provides the PT_GETXMMREGS request.
1382 AC_MSG_CHECKING(for PT_GETXMMREGS)
1383 AC_CACHE_VAL(gdb_cv_have_pt_getxmmregs,
1384 [AC_TRY_COMPILE([#include <sys/types.h>
1385 #include <sys/ptrace.h>],
1386                 [PT_GETXMMREGS;],
1387                 [gdb_cv_have_pt_getxmmregs=yes],
1388                 [gdb_cv_have_pt_getxmmregs=no])])
1389 AC_MSG_RESULT($gdb_cv_have_pt_getxmmregs)
1390 if test $gdb_cv_have_pt_getxmmregs = yes; then
1391   AC_DEFINE(HAVE_PT_GETXMMREGS, 1,
1392   [Define if sys/ptrace.h defines the PT_GETXMMREGS request.])
1393 fi
1394
1395 # Detect which type of /proc is in use, such as for Solaris.
1396
1397 if test "${target}" = "${host}"; then
1398   case "${host}" in
1399   *-*-sysv4.2* | *-*-sysv5* )
1400       AC_DEFINE(NEW_PROC_API, 1,
1401       [Define if you want to use new multi-fd /proc interface
1402        (replaces HAVE_MULTIPLE_PROC_FDS as well as other macros).])
1403       ;;
1404   *-*-solaris2.[[6789]] | *-*-solaris2.1[[0-9]]*)
1405       AC_DEFINE(NEW_PROC_API, 1,
1406       [Define if you want to use new multi-fd /proc interface
1407        (replaces HAVE_MULTIPLE_PROC_FDS as well as other macros).])
1408       ;;
1409   mips-sgi-irix5*)
1410       # Work around <sys/proc.h> needing _KMEMUSER problem on IRIX 5.
1411       AC_DEFINE([_KMEMUSER], 1,
1412       [Define to 1 so <sys/proc.h> gets a definition of anon_hdl.  Works
1413        around a <sys/proc.h> problem on IRIX 5.])
1414       ;;
1415   esac
1416 fi
1417
1418 if test "$ac_cv_header_sys_procfs_h" = yes; then
1419   BFD_HAVE_SYS_PROCFS_TYPE(pstatus_t)
1420   BFD_HAVE_SYS_PROCFS_TYPE(prrun_t)
1421   BFD_HAVE_SYS_PROCFS_TYPE(gregset_t)
1422   BFD_HAVE_SYS_PROCFS_TYPE(fpregset_t)
1423   BFD_HAVE_SYS_PROCFS_TYPE(prgregset_t)
1424   BFD_HAVE_SYS_PROCFS_TYPE(prfpregset_t)
1425   BFD_HAVE_SYS_PROCFS_TYPE(prgregset32_t)
1426   BFD_HAVE_SYS_PROCFS_TYPE(prfpregset32_t)
1427   BFD_HAVE_SYS_PROCFS_TYPE(lwpid_t)
1428   BFD_HAVE_SYS_PROCFS_TYPE(psaddr_t)
1429   BFD_HAVE_SYS_PROCFS_TYPE(prsysent_t)
1430   BFD_HAVE_SYS_PROCFS_TYPE(pr_sigset_t)
1431   BFD_HAVE_SYS_PROCFS_TYPE(pr_sigaction64_t)
1432   BFD_HAVE_SYS_PROCFS_TYPE(pr_siginfo64_t)
1433
1434
1435   dnl Check for broken prfpregset_t type
1436
1437   dnl For Linux/i386, glibc 2.1.3 was released with a bogus
1438   dnl prfpregset_t type (it's a typedef for the pointer to a struct
1439   dnl instead of the struct itself).  We detect this here, and work
1440   dnl around it in gdb_proc_service.h.
1441
1442   if test $bfd_cv_have_sys_procfs_type_prfpregset_t = yes; then
1443     AC_MSG_CHECKING(whether prfpregset_t type is broken)
1444     AC_CACHE_VAL(gdb_cv_prfpregset_t_broken,
1445       [AC_TRY_RUN([#include <sys/procfs.h>
1446        int main ()
1447        {
1448          if (sizeof (prfpregset_t) == sizeof (void *))
1449            return 1;
1450          return 0;
1451        }],
1452        gdb_cv_prfpregset_t_broken=no,
1453        gdb_cv_prfpregset_t_broken=yes,
1454        gdb_cv_prfpregset_t_broken=yes)])
1455     AC_MSG_RESULT($gdb_cv_prfpregset_t_broken)
1456     if test $gdb_cv_prfpregset_t_broken = yes; then
1457       AC_DEFINE(PRFPREGSET_T_BROKEN, 1,
1458       [Define if the prfpregset_t type is broken.])
1459     fi
1460   fi
1461
1462   dnl Check for PIOCSET ioctl entry
1463
1464   AC_MSG_CHECKING(for PIOCSET ioctl entry in sys/procfs.h)
1465   AC_CACHE_VAL(gdb_cv_have_procfs_piocset,
1466   [AC_TRY_COMPILE([#include <unistd.h>
1467 #include <sys/types.h>
1468 #include <sys/procfs.h>
1469 ], [
1470     int dummy;;
1471     dummy = ioctl(0, PIOCSET, &dummy);
1472   ],
1473   gdb_cv_have_procfs_piocset=yes, gdb_cv_have_procfs_piocset=no)])
1474   AC_MSG_RESULT($gdb_cv_have_procfs_piocset)
1475   if test $gdb_cv_have_procfs_piocset = yes; then
1476     AC_DEFINE(HAVE_PROCFS_PIOCSET, 1,
1477     [Define if ioctl argument PIOCSET is available.])
1478   fi
1479 fi
1480
1481 dnl For native ports (host == target), check to see what kind of
1482 dnl legacy link.h support is needed.  (See solib-legacy.c.)
1483 if test ${host} = ${target} ; then
1484   dnl Check for struct link_map with l_ members which are indicative
1485   dnl of SVR4-like shared libraries
1486
1487   AC_MSG_CHECKING(for member l_addr in struct link_map)
1488   AC_CACHE_VAL(gdb_cv_have_struct_link_map_with_l_members,
1489     [AC_TRY_COMPILE([#include <link.h>],
1490                     [struct link_map lm; (void) lm.l_addr;],
1491                     gdb_cv_have_struct_link_map_with_l_members=yes,
1492                     gdb_cv_have_struct_link_map_with_l_members=no)])
1493   AC_MSG_RESULT($gdb_cv_have_struct_link_map_with_l_members)
1494   if test $gdb_cv_have_struct_link_map_with_l_members = yes; then
1495     AC_DEFINE(HAVE_STRUCT_LINK_MAP_WITH_L_MEMBERS,1,
1496     [Define if <link.h> exists and defines struct link_map which has
1497      members with an ``l_'' prefix.  (For Solaris, SVR4, and
1498      SVR4-like systems.)])
1499   fi
1500
1501   dnl Check for struct link_map with lm_ members which are indicative
1502   dnl of SunOS-like shared libraries
1503
1504   AC_MSG_CHECKING(for member lm_addr in struct link_map)
1505   AC_CACHE_VAL(gdb_cv_have_struct_link_map_with_lm_members,
1506     [AC_TRY_COMPILE([#include <sys/types.h>
1507 #include <link.h>],
1508                     [struct link_map lm; (void) lm.lm_addr;],
1509                     gdb_cv_have_struct_link_map_with_lm_members=yes,
1510                     gdb_cv_have_struct_link_map_with_lm_members=no)])
1511   AC_MSG_RESULT($gdb_cv_have_struct_link_map_with_lm_members)
1512   if test $gdb_cv_have_struct_link_map_with_lm_members = yes; then
1513     AC_DEFINE(HAVE_STRUCT_LINK_MAP_WITH_LM_MEMBERS, 1,
1514     [Define if <link.h> exists and defines struct link_map which has
1515      members with an ``lm_'' prefix.  (For SunOS.)])
1516   fi
1517
1518   dnl Check for struct so_map with som_ members which are found on
1519   dnl some *BSD systems.
1520
1521   AC_MSG_CHECKING(for member som_addr in struct so_map)
1522   AC_CACHE_VAL(gdb_cv_have_struct_so_map_with_som_members,
1523     [AC_TRY_COMPILE([#include <sys/types.h>
1524 #ifdef HAVE_NLIST_H
1525 #include <nlist.h>
1526 #endif
1527 #include <link.h>],
1528                     [struct so_map lm; (void) lm.som_addr;],
1529                     gdb_cv_have_struct_so_map_with_som_members=yes,
1530                     gdb_cv_have_struct_so_map_with_som_members=no)])
1531   AC_MSG_RESULT($gdb_cv_have_struct_so_map_with_som_members)
1532   if test $gdb_cv_have_struct_so_map_with_som_members = yes; then
1533     AC_DEFINE(HAVE_STRUCT_SO_MAP_WITH_SOM_MEMBERS, 1,
1534     [Define if <link.h> exists and defines a struct so_map which has
1535      members with an ``som_'' prefix.  (Found on older *BSD systems.)])
1536   fi
1537
1538   dnl Check for struct link_map32 type, which allows a 64-bit Solaris
1539   dnl debugger to debug a 32-bit Solaris app with 32-bit shared libraries.
1540
1541   AC_MSG_CHECKING(for struct link_map32 in sys/link.h)
1542   AC_CACHE_VAL(gdb_cv_have_struct_link_map32,
1543     [AC_TRY_COMPILE([#define _SYSCALL32
1544 #include <sys/link.h>], [struct link_map32 l;],
1545      gdb_cv_have_struct_link_map32=yes,
1546      gdb_cv_have_struct_link_map32=no)])
1547   AC_MSG_RESULT($gdb_cv_have_struct_link_map32)
1548   if test $gdb_cv_have_struct_link_map32 = yes; then
1549     AC_DEFINE(HAVE_STRUCT_LINK_MAP32, 1,
1550     [Define if <sys/link.h> has struct link_map32])
1551     AC_DEFINE(_SYSCALL32, 1,
1552     [Define if <sys/link.h> has link_map32 (solaris sparc-64 target)])
1553   fi
1554 fi
1555
1556 # Check if the compiler supports the `long long' type.
1557
1558 AC_CACHE_CHECK([for long long support in compiler], gdb_cv_c_long_long,
1559                [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1560 [[extern long long foo;]],
1561 [[switch (foo & 2) { case 0: return 1; }]])],
1562                                   gdb_cv_c_long_long=yes,
1563                                   gdb_cv_c_long_long=no)])
1564 if test $gdb_cv_c_long_long != yes; then
1565   # libdecnumber requires long long.
1566   AC_MSG_ERROR([Compiler must support long long for GDB.])
1567 fi
1568
1569 # Check if the compiler and runtime support printing long longs.
1570
1571 AC_CACHE_CHECK([for long long support in printf],
1572                gdb_cv_printf_has_long_long,
1573                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1574 [[char buf[32];
1575   long long l = 0;
1576   l = (l << 16) + 0x0123;
1577   l = (l << 16) + 0x4567;
1578   l = (l << 16) + 0x89ab;
1579   l = (l << 16) + 0xcdef;
1580   sprintf (buf, "0x%016llx", l);
1581   return (strcmp ("0x0123456789abcdef", buf));]])],
1582                               gdb_cv_printf_has_long_long=yes,
1583                               gdb_cv_printf_has_long_long=no,
1584                               gdb_cv_printf_has_long_long=no)])
1585 if test $gdb_cv_printf_has_long_long = yes; then
1586   AC_DEFINE(PRINTF_HAS_LONG_LONG, 1,
1587             [Define to 1 if the "%ll" format works to print long longs.])
1588 fi
1589
1590 # Check if the compiler and runtime support printing decfloats.
1591
1592 AC_CACHE_CHECK([for decfloat support in printf],
1593                gdb_cv_printf_has_decfloat,
1594                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1595 [[char buf[64];
1596   _Decimal32 d32 = 1.2345df;
1597   _Decimal64 d64 = 1.2345dd;
1598   _Decimal128 d128 = 1.2345dl;
1599   sprintf (buf, "Decimal32: %H\nDecimal64: %D\nDecimal128: %DD", d32, d64, d128);
1600   return (strcmp ("Decimal32: 1.2345\nDecimal64: 1.2345\nDecimal128: 1.2345", buf));]])],
1601                               gdb_cv_printf_has_decfloat=yes,
1602                               gdb_cv_printf_has_decfloat=no,
1603                               gdb_cv_printf_has_decfloat=no)])
1604 if test $gdb_cv_printf_has_decfloat = yes; then
1605   AC_DEFINE(PRINTF_HAS_DECFLOAT, 1,
1606             [Define to 1 if the "%H, %D and %DD" formats work to print decfloats.])
1607 fi
1608
1609 # Check if the compiler supports the `long double' type.  We can't use
1610 # AC_C_LONG_DOUBLE because that one does additional checks on the
1611 # constants defined in <float.h> that fail on some systems,
1612 # e.g. FreeBSD/i386 4.7 and OpenBSD/i386 3.6.
1613
1614 AC_CACHE_CHECK([for long double support in compiler], gdb_cv_c_long_double,
1615                [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[long double foo;]])],
1616                                   gdb_cv_c_long_double=yes,
1617                                   gdb_cv_c_long_double=no)])
1618 if test $gdb_cv_c_long_double = yes; then
1619   AC_DEFINE(HAVE_LONG_DOUBLE, 1,
1620            [Define to 1 if the compiler supports long double.])
1621 fi
1622
1623 # Check if the compiler and runtime support printing long doubles.
1624
1625 AC_CACHE_CHECK([for long double support in printf],
1626                gdb_cv_printf_has_long_double,
1627                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1628 [[char buf[16];
1629   long double f = 3.141592653;
1630   sprintf (buf, "%Lg", f);
1631   return (strncmp ("3.14159", buf, 7));]])],
1632                               gdb_cv_printf_has_long_double=yes,
1633                               gdb_cv_printf_has_long_double=no,
1634                               gdb_cv_printf_has_long_double=no)])
1635 if test $gdb_cv_printf_has_long_double = yes; then
1636   AC_DEFINE(PRINTF_HAS_LONG_DOUBLE, 1,
1637             [Define to 1 if the "%Lg" format works to print long doubles.])
1638 fi
1639
1640 # Check if the compiler and runtime support scanning long doubles.
1641
1642 AC_CACHE_CHECK([for long double support in scanf],
1643                gdb_cv_scanf_has_long_double,
1644                [AC_RUN_IFELSE([AC_LANG_PROGRAM(
1645 [[#include <stdio.h>]],
1646 [[char *buf = "3.141592653";
1647   long double f = 0;
1648   sscanf (buf, "%Lg", &f);
1649   return !(f > 3.14159 && f < 3.14160);]])],
1650                               gdb_cv_scanf_has_long_double=yes,
1651                               gdb_cv_scanf_has_long_double=no,
1652                               gdb_cv_scanf_has_long_double=no)])
1653 if test $gdb_cv_scanf_has_long_double = yes; then
1654   AC_DEFINE(SCANF_HAS_LONG_DOUBLE, 1,
1655             [Define to 1 if the "%Lg" format works to scan long doubles.])
1656 fi
1657
1658 case ${host_os} in
1659 aix*)
1660   AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
1661     SAVE_LDFLAGS=$LDFLAGS
1662
1663     case $GCC in
1664     yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
1665     *) gdb_cv_bigtoc=-bbigtoc ;;
1666     esac
1667
1668     LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
1669     AC_TRY_LINK([], [int i;], [], [gdb_cv_bigtoc=])
1670     LDFLAGS="${SAVE_LDFLAGS}"
1671   ])
1672   CONFIG_LDFLAGS="${CONFIG_LDFLAGS} ${gdb_cv_bigtoc}"
1673   ;;
1674 esac
1675
1676 AC_MSG_CHECKING(for the dynamic export flag)
1677 dynamic_list=false
1678 if test "${gdb_native}" = yes; then
1679    # The dynamically loaded libthread_db needs access to symbols in the gdb
1680    # executable.  Older GNU ld supports --export-dynamic but --dynamic-list
1681    # may not be supported there.
1682    old_LDFLAGS="$LDFLAGS"
1683    # Older GNU ld supports --export-dynamic but --dynamic-list it does not.
1684    RDYNAMIC="-Wl,--dynamic-list=${srcdir}/proc-service.list"
1685    LDFLAGS="$LDFLAGS $RDYNAMIC"
1686    if test "${have_libpython}" = no; then
1687      AC_TRY_LINK([], [], [dynamic_list=true])
1688    else
1689      # Workaround http://bugs.python.org/issue4434 where static
1690      # libpythonX.Y.a would get its symbols required for
1691      # pythonX.Y/lib-dynload/*.so modules hidden by -Wl,--dynamic-list.
1692      # Problem does not happen for the recommended libpythonX.Y.so linkage.
1693      old_CFLAGS="$CFLAGS"
1694      CFLAGS="$CFLAGS $PYTHON_CFLAGS"
1695      old_LIBS="$LIBS"
1696      LIBS="$LIBS $PYTHON_LIBS"
1697      AC_RUN_IFELSE(
1698        AC_LANG_PROGRAM(
1699          [#include "]${have_libpython}[/Python.h"],
1700          [int err;
1701           Py_Initialize ();
1702           err = PyRun_SimpleString ("import itertools\n");
1703           Py_Finalize ();
1704           return err == 0 ? 0 : 1;]),
1705        [dynamic_list=true], [], [true])
1706      LIBS="$old_LIBS"
1707      CFLAGS="$old_CFLAGS"
1708    fi
1709    LDFLAGS="$old_LDFLAGS"
1710 fi
1711 if $dynamic_list; then
1712   found="-Wl,--dynamic-list"
1713   RDYNAMIC='-Wl,--dynamic-list=$(srcdir)/proc-service.list'
1714 else
1715   found="-rdynamic"
1716   RDYNAMIC="-rdynamic"
1717 fi
1718 AC_SUBST(RDYNAMIC)
1719 AC_MSG_RESULT($found)
1720
1721 dnl For certain native configurations, we need to check whether thread
1722 dnl support can be built in or not.
1723 dnl
1724 dnl Note that we only want this if we are both native (host == target),
1725 dnl and not doing a canadian cross build (build == host).
1726
1727 if test ${build} = ${host} -a ${host} = ${target} ; then
1728    case ${host_os} in
1729    solaris*)
1730       # See if thread_db library is around for Solaris thread debugging.
1731       # Note that we must explicitly test for version 1 of the library
1732       # because version 0 (present on Solaris 2.4 or earlier) doesn't have
1733       # the same API.
1734       AC_MSG_CHECKING(for Solaris thread debugging library)
1735       if test -f /usr/lib/libthread_db.so.1 ; then
1736          AC_MSG_RESULT(yes)
1737          AC_DEFINE(HAVE_THREAD_DB_LIB, 1,
1738          [Define if using Solaris thread debugging.])
1739          CONFIG_OBS="${CONFIG_OBS} sol-thread.o"
1740          CONFIG_SRCS="${CONFIG_SRCS} sol-thread.c"
1741          AC_CHECK_LIB(dl, dlopen)
1742          CONFIG_LDFLAGS="${CONFIG_LDFLAGS} $RDYNAMIC"
1743          # Sun randomly tweaked the prototypes in <proc_service.h>
1744          # at one point.
1745          AC_MSG_CHECKING(if <proc_service.h> is old)
1746          AC_CACHE_VAL(gdb_cv_proc_service_is_old,[
1747             AC_TRY_COMPILE([
1748                 #include <proc_service.h>
1749                 ps_err_e ps_pdwrite
1750                     (struct ps_prochandle*, psaddr_t, const void*, size_t);
1751             ],, gdb_cv_proc_service_is_old=no,
1752                 gdb_cv_proc_service_is_old=yes)
1753          ])
1754          AC_MSG_RESULT($gdb_cv_proc_service_is_old)
1755          if test $gdb_cv_proc_service_is_old = yes; then
1756             AC_DEFINE(PROC_SERVICE_IS_OLD, 1,
1757             [Define if <proc_service.h> on solaris uses int instead of
1758              size_t, and assorted other type changes.])
1759          fi
1760       else
1761          AC_MSG_RESULT(no)
1762       fi
1763       ;;
1764    aix*)
1765       AC_MSG_CHECKING(for AiX thread debugging library)
1766       AC_CACHE_VAL(gdb_cv_have_aix_thread_debug,
1767                    [AC_TRY_COMPILE([#include <sys/pthdebug.h>],
1768                                    [#ifndef PTHDB_VERSION_3
1769                                     #error
1770                                     #endif],
1771                                    gdb_cv_have_aix_thread_debug=yes,
1772                                    gdb_cv_have_aix_thread_debug=no)])
1773       AC_MSG_RESULT($gdb_cv_have_aix_thread_debug)
1774       if test $gdb_cv_have_aix_thread_debug = yes; then
1775          CONFIG_SRCS="${CONFIG_SRCS} aix-thread.c"
1776          CONFIG_OBS="${CONFIG_OBS} aix-thread.o"
1777          LIBS="$LIBS -lpthdebug"
1778
1779          # Older versions of AIX do not provide the declaration for
1780          # the getthrds function (it appears that it was introduced
1781          # with AIX 6.x).
1782          AC_CHECK_DECLS(getthrds, [], [], [[#include <procinfo.h>]])
1783       fi
1784       ;;
1785    esac
1786    AC_SUBST(CONFIG_LDFLAGS)
1787 fi
1788
1789 dnl See if we have a thread_db header file that has TD_NOTALLOC and
1790 dnl other error codes.
1791 if test "x$ac_cv_header_thread_db_h" = "xyes"; then
1792    AC_CACHE_CHECK([whether <thread_db.h> has TD_NOTALLOC],
1793                   gdb_cv_thread_db_h_has_td_notalloc,
1794      AC_TRY_COMPILE(
1795        [#include <thread_db.h>],
1796        [int i = TD_NOTALLOC;],
1797        gdb_cv_thread_db_h_has_td_notalloc=yes,
1798        gdb_cv_thread_db_h_has_td_notalloc=no
1799      )
1800    )
1801    AC_CACHE_CHECK([whether <thread_db.h> has TD_VERSION],
1802                   gdb_cv_thread_db_h_has_td_version,
1803      AC_TRY_COMPILE(
1804        [#include <thread_db.h>],
1805        [int i = TD_VERSION;],
1806        gdb_cv_thread_db_h_has_td_version=yes,
1807        gdb_cv_thread_db_h_has_td_version=no
1808      )
1809    )
1810    AC_CACHE_CHECK([whether <thread_db.h> has TD_NOTLS],
1811                   gdb_cv_thread_db_h_has_td_notls,
1812      AC_TRY_COMPILE(
1813        [#include <thread_db.h>],
1814        [int i = TD_NOTLS;],
1815        gdb_cv_thread_db_h_has_td_notls=yes,
1816        gdb_cv_thread_db_h_has_td_notls=no
1817      )
1818    )
1819 fi
1820 if test "x$gdb_cv_thread_db_h_has_td_notalloc" = "xyes"; then
1821   AC_DEFINE(THREAD_DB_HAS_TD_NOTALLOC, 1,
1822             [Define if <thread_db.h> has the TD_NOTALLOC error code.])
1823 fi
1824 if test "x$gdb_cv_thread_db_h_has_td_version" = "xyes"; then
1825   AC_DEFINE(THREAD_DB_HAS_TD_VERSION, 1,
1826             [Define if <thread_db.h> has the TD_VERSION error code.])
1827 fi
1828 if test "x$gdb_cv_thread_db_h_has_td_notls" = "xyes"; then
1829   AC_DEFINE(THREAD_DB_HAS_TD_NOTLS, 1,
1830             [Define if <thread_db.h> has the TD_NOTLS error code.])
1831 fi
1832
1833 dnl See if we have a sys/syscall header file that has __NR_tkill.
1834 if test "x$ac_cv_header_sys_syscall_h" = "xyes"; then
1835    AC_CACHE_CHECK([whether <sys/syscall.h> has __NR_tkill],
1836                   gdb_cv_sys_syscall_h_has_tkill,
1837      AC_TRY_COMPILE(
1838        [#include <sys/syscall.h>],
1839        [int i = __NR_tkill;],
1840        gdb_cv_sys_syscall_h_has_tkill=yes,
1841        gdb_cv_sys_syscall_h_has_tkill=no
1842      )
1843    )
1844 fi
1845 dnl See if we can issue tkill syscall.
1846 if test "x$gdb_cv_sys_syscall_h_has_tkill" = "xyes" && test "x$ac_cv_func_syscall" = "xyes"; then
1847   AC_DEFINE(HAVE_TKILL_SYSCALL, 1, [Define if you support the tkill syscall.])
1848 fi
1849
1850 dnl Check if we can disable the virtual address space randomization.
1851 dnl The functionality of setarch -R.
1852 AC_CHECK_DECLS([ADDR_NO_RANDOMIZE],,, [#include <sys/personality.h>])
1853 define([PERSONALITY_TEST], [AC_LANG_PROGRAM([#include <sys/personality.h>], [
1854 #      if !HAVE_DECL_ADDR_NO_RANDOMIZE
1855 #       define ADDR_NO_RANDOMIZE 0x0040000
1856 #      endif
1857        /* Test the flag could be set and stays set.  */
1858        personality (personality (0xffffffff) | ADDR_NO_RANDOMIZE);
1859        if (!(personality (personality (0xffffffff)) & ADDR_NO_RANDOMIZE))
1860            return 1])])
1861 AC_RUN_IFELSE([PERSONALITY_TEST],
1862               [have_personality=true],
1863               [have_personality=false],
1864               [AC_LINK_IFELSE([PERSONALITY_TEST],
1865                               [have_personality=true],
1866                               [have_personality=false])])
1867 if $have_personality
1868 then
1869     AC_DEFINE([HAVE_PERSONALITY], 1,
1870               [Define if you support the personality syscall.])
1871 fi
1872
1873 dnl Set the host's .gdbinit filename.
1874 case $host_os in
1875   go32* | *djgpp*)
1876     gdbinit=gdb.ini
1877     ;;
1878   *)
1879     gdbinit=.gdbinit
1880     ;;
1881 esac
1882 AC_DEFINE_UNQUOTED(GDBINIT,"$gdbinit",[The .gdbinit filename.])
1883
1884 dnl Handle optional features that can be enabled.
1885
1886 # Support for --with-sysroot is a copy of GDB_AC_WITH_DIR,
1887 # except that the argument to --with-sysroot is optional.
1888 # --with-sysroot (or --with-sysroot=yes) sets the default sysroot path.
1889 if test "x$with_sysroot" = xyes; then
1890   with_sysroot="${exec_prefix}/${target_alias}/sys-root"
1891 fi
1892 AC_ARG_WITH(sysroot,
1893   AS_HELP_STRING([--with-sysroot@<:@=DIR@:>@],
1894                  [search for usr/lib et al within DIR]),
1895   [TARGET_SYSTEM_ROOT=$withval], [TARGET_SYSTEM_ROOT=])
1896 AC_DEFINE_DIR(TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT,
1897               [search for usr/lib et al within DIR])
1898 AC_SUBST(TARGET_SYSTEM_ROOT)
1899 GDB_AC_DEFINE_RELOCATABLE(TARGET_SYSTEM_ROOT, sysroot, ${ac_define_dir})
1900
1901 GDB_AC_WITH_DIR(SYSTEM_GDBINIT, system-gdbinit,
1902     [automatically load a system-wide gdbinit file],
1903     [])
1904
1905 AC_ARG_ENABLE(werror,
1906   AS_HELP_STRING([--enable-werror], [treat compile warnings as errors]),
1907   [case "${enableval}" in
1908      yes | y) ERROR_ON_WARNING="yes" ;;
1909      no | n)  ERROR_ON_WARNING="no" ;;
1910      *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;
1911    esac])
1912
1913 # Enable -Werror by default when using gcc.  Turn it off for releases.
1914 if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" && $development; then
1915     ERROR_ON_WARNING=yes
1916 fi
1917
1918 WERROR_CFLAGS=""
1919 if test "${ERROR_ON_WARNING}" = yes ; then
1920     WERROR_CFLAGS="-Werror"
1921 fi
1922
1923 build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
1924 -Wpointer-sign \
1925 -Wno-unused -Wunused-value -Wunused-function \
1926 -Wno-switch -Wno-char-subscripts -Wmissing-prototypes \
1927 -Wdeclaration-after-statement -Wempty-body -Wmissing-parameter-type \
1928 -Wold-style-declaration -Wold-style-definition"
1929
1930 # Enable -Wno-format by default when using gcc on mingw since many
1931 # GCC versions complain about %I64.
1932 case "${host}" in
1933   *-*-mingw32*) build_warnings="$build_warnings -Wno-format" ;;
1934   *) build_warnings="$build_warnings -Wformat-nonliteral" ;;
1935 esac
1936
1937 AC_ARG_ENABLE(build-warnings,
1938 AS_HELP_STRING([--enable-build-warnings], [enable build-time compiler warnings if gcc is used]),
1939 [case "${enableval}" in
1940   yes)  ;;
1941   no)   build_warnings="-w";;
1942   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1943         build_warnings="${build_warnings} ${t}";;
1944   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1945         build_warnings="${t} ${build_warnings}";;
1946   *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
1947 esac
1948 if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
1949   echo "Setting compiler warning flags = $build_warnings" 6>&1
1950 fi])dnl
1951 AC_ARG_ENABLE(gdb-build-warnings,
1952 AS_HELP_STRING([--enable-gdb-build-warnings], [enable GDB specific build-time compiler warnings if gcc is used]),
1953 [case "${enableval}" in
1954   yes)  ;;
1955   no)   build_warnings="-w";;
1956   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1957         build_warnings="${build_warnings} ${t}";;
1958   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1959         build_warnings="${t} ${build_warnings}";;
1960   *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
1961 esac
1962 if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
1963   echo "Setting GDB specific compiler warning flags = $build_warnings" 6>&1
1964 fi])dnl
1965 WARN_CFLAGS=""
1966 if test "x${build_warnings}" != x -a "x$GCC" = xyes
1967 then
1968     AC_MSG_CHECKING(compiler warning flags)
1969     # Separate out the -Werror flag as some files just cannot be
1970     # compiled with it enabled.
1971     for w in ${build_warnings}; do
1972         case $w in
1973         -Werr*) WERROR_CFLAGS=-Werror ;;
1974         *) # Check that GCC accepts it
1975             saved_CFLAGS="$CFLAGS"
1976             CFLAGS="$CFLAGS $w"
1977             AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",)
1978             CFLAGS="$saved_CFLAGS"
1979         esac
1980     done
1981     AC_MSG_RESULT(${WARN_CFLAGS} ${WERROR_CFLAGS})
1982 fi
1983 AC_SUBST(WARN_CFLAGS)
1984 AC_SUBST(WERROR_CFLAGS)
1985
1986 # In the Cygwin environment, we need some additional flags.
1987 AC_CACHE_CHECK([for cygwin], gdb_cv_os_cygwin,
1988 [AC_EGREP_CPP(lose, [
1989 #if defined (__CYGWIN__) || defined (__CYGWIN32__)
1990 lose
1991 #endif],[gdb_cv_os_cygwin=yes],[gdb_cv_os_cygwin=no])])
1992
1993
1994 dnl Figure out which of the many generic ser-*.c files the _host_ supports.
1995 SER_HARDWIRE="ser-base.o ser-unix.o ser-pipe.o ser-tcp.o"
1996 case ${host} in
1997   *go32* ) SER_HARDWIRE=ser-go32.o ;;
1998   *djgpp* ) SER_HARDWIRE=ser-go32.o ;;
1999   *mingw32*) SER_HARDWIRE="ser-base.o ser-tcp.o ser-mingw.o" ;;
2000 esac
2001 AC_SUBST(SER_HARDWIRE)
2002
2003 # libreadline needs libuser32.a in a cygwin environment
2004 WIN32LIBS=
2005 if test x$gdb_cv_os_cygwin = xyes; then
2006     WIN32LIBS="-luser32"
2007     case "${target}" in
2008         *cygwin*) WIN32LIBS="$WIN32LIBS -limagehlp"
2009         ;;
2010     esac
2011 fi
2012
2013 # The ser-tcp.c module requires sockets.
2014 case ${host} in
2015   *mingw32*)
2016     AC_DEFINE(USE_WIN32API, 1,
2017               [Define if we should use the Windows API, instead of the
2018                POSIX API.  On Windows, we use the Windows API when
2019                building for MinGW, but the POSIX API when building
2020                for Cygwin.])
2021     WIN32LIBS="$WIN32LIBS -lws2_32"
2022     ;;
2023 esac
2024 AC_SUBST(WIN32LIBS)
2025
2026 # Add ELF support to GDB, but only if BFD includes ELF support.
2027 GDB_AC_CHECK_BFD([for ELF support in BFD], gdb_cv_var_elf,
2028                  [bfd_get_elf_phdr_upper_bound (NULL)], elf-bfd.h)
2029 if test $gdb_cv_var_elf = yes; then
2030   CONFIG_OBS="$CONFIG_OBS elfread.o stap-probe.o"
2031   AC_DEFINE(HAVE_ELF, 1,
2032             [Define if ELF support should be included.])
2033   # -ldl is provided by bfd/Makfile.am (LIBDL) <PLUGINS>.
2034   if test "$plugins" = "yes"; then
2035     AC_SEARCH_LIBS(dlopen, dl)
2036   fi
2037 fi
2038
2039 # Add macho support to GDB, but only if BFD includes it.
2040 GDB_AC_CHECK_BFD([for Mach-O support in BFD], gdb_cv_var_macho,
2041                  [bfd_mach_o_lookup_command (NULL, 0, NULL)], mach-o.h)
2042 if test $gdb_cv_var_macho = yes; then
2043   CONFIG_OBS="$CONFIG_OBS machoread.o"
2044 fi
2045
2046 # Add SOM support to GDB, but only if BFD includes it.
2047 GDB_AC_CHECK_BFD([for SOM support in BFD], gdb_cv_var_som,
2048                  [bfd_som_attach_aux_hdr (NULL, 0, NULL)], som.h)
2049 if test $gdb_cv_var_som = yes; then
2050   CONFIG_OBS="$CONFIG_OBS somread.o"
2051 fi
2052
2053 # Add any host-specific objects to GDB.
2054 CONFIG_OBS="${CONFIG_OBS} ${gdb_host_obs}"
2055
2056 # If building on ELF, look for lzma support for embedded compressed debug info.
2057 if test $gdb_cv_var_elf = yes; then
2058   AC_ARG_WITH(lzma,
2059     AS_HELP_STRING([--with-lzma], [support lzma compression (auto/yes/no)]),
2060     [], [with_lzma=auto])
2061   AC_MSG_CHECKING([whether to use lzma])
2062   AC_MSG_RESULT([$with_lzma])
2063
2064   if test "${with_lzma}" != no; then
2065     AC_LIB_HAVE_LINKFLAGS([lzma], [], [#include "lzma.h"],
2066                           [lzma_index_iter iter;
2067                            lzma_index_iter_init (&iter, 0);
2068                            lzma_mf_is_supported (LZMA_MF_HC3);])
2069     if test "$HAVE_LIBLZMA" != yes; then
2070       if test "$with_lzma" = yes; then
2071         AC_MSG_ERROR([missing liblzma for --with-lzma])
2072       fi
2073     fi
2074   fi
2075 fi
2076
2077 LIBGUI="../libgui/src/libgui.a"
2078 GUI_CFLAGS_X="-I${srcdir}/../libgui/src"
2079 AC_SUBST(LIBGUI)
2080 AC_SUBST(GUI_CFLAGS_X)
2081
2082 WIN32LDAPP=
2083 AC_SUBST(WIN32LIBS)
2084 AC_SUBST(WIN32LDAPP)
2085
2086 case "${host}" in
2087 *-*-cygwin* | *-*-mingw* )
2088     configdir="win"
2089     ;;
2090 *)
2091     configdir="unix"
2092     ;;
2093 esac
2094
2095 GDBTKLIBS=
2096 if test "${enable_gdbtk}" = "yes"; then
2097
2098     # Gdbtk must have an absolute path to srcdir in order to run
2099     # properly when not installed.
2100     here=`pwd`
2101     cd ${srcdir}
2102     GDBTK_SRC_DIR=`pwd`
2103     cd $here
2104
2105     SC_PATH_TCLCONFIG
2106
2107     # If $no_tk is nonempty, then we can't do Tk, and there is no
2108     # point to doing Tcl.
2109     SC_PATH_TKCONFIG
2110
2111     if test -z "${no_tcl}" -a -z "${no_tk}"; then
2112         SC_LOAD_TCLCONFIG
2113
2114         # Check for in-tree tcl
2115         here=`pwd`
2116         cd ${srcdir}/..
2117         topdir=`pwd`
2118         cd ${here}
2119
2120         intree="no"
2121         if test "${TCL_SRC_DIR}" = "${topdir}/tcl"; then
2122           intree="yes"
2123         fi
2124
2125         # Find Tcl private headers
2126         if test x"${intree}" = xno; then
2127           CY_AC_TCL_PRIVATE_HEADERS
2128           TCL_INCLUDE="${TCL_INCLUDE_SPEC} ${TCL_PRIVATE_INCLUDE}"
2129           TCL_LIBRARY="${TCL_LIB_SPEC}"
2130           TCL_DEPS=""
2131         else
2132           # If building tcl in the same src tree, private headers
2133           # are not needed, but we need to be sure to use the right
2134           # headers library
2135           TCL_INCLUDE="-I${TCL_SRC_DIR}/generic"
2136           TCL_LIBRARY="${TCL_BUILD_LIB_SPEC}"
2137           TCL_DEPS="../tcl/${configdir}${TCL_LIB_FILE}"
2138         fi
2139         AC_SUBST(TCL_INCLUDE)
2140         AC_SUBST(TCL_LIBRARY)
2141         AC_SUBST(TCL_DEPS)
2142
2143         SC_LOAD_TKCONFIG
2144
2145         # Check for in-tree Tk
2146         intree="no"
2147         if test "${TK_SRC_DIR}" = "${topdir}/tk"; then
2148           intree="yes"
2149         fi
2150
2151         # Find Tk private headers
2152         if test x"${intree}" = xno; then
2153           CY_AC_TK_PRIVATE_HEADERS
2154           TK_INCLUDE="${TK_INCLUDE_SPEC} ${TK_PRIVATE_INCLUDE}"
2155           TK_LIBRARY=${TK_LIB_SPEC}
2156           TK_DEPS=""
2157         else
2158           TK_INCLUDE="-I${TK_SRC_DIR}/generic"
2159           TK_LIBRARY="${TK_BUILD_LIB_SPEC}"
2160           TK_DEPS="../tk/${configdir}/${TK_LIB_FILE}"
2161         fi
2162         AC_SUBST(TK_INCLUDE)
2163         AC_SUBST(TK_LIBRARY)
2164         AC_SUBST(TK_DEPS)
2165         AC_SUBST(TK_XINCLUDES)
2166
2167         ENABLE_CFLAGS="${ENABLE_CFLAGS} \$(SUBDIR_GDBTK_CFLAGS)"
2168
2169         # Include some libraries that Tcl and Tk want.
2170         TCL_LIBS='$(LIBGUI) $(TK) $(TCL) $(X11_LDFLAGS) $(X11_LIBS)'
2171         # Yes, the ordering seems wrong here.  But it isn't.
2172         # TK_LIBS is the list of libraries that need to be linked
2173         # after Tcl/Tk.  Note that this isn't put into LIBS.  If it
2174         # were in LIBS then any link tests after this point would
2175         # try to include things like `$(LIBGUI)', which wouldn't work.
2176         GDBTKLIBS="${TCL_LIBS} ${TK_LIBS}"
2177
2178         CONFIG_OBS="${CONFIG_OBS} \$(SUBDIR_GDBTK_OBS)"
2179         CONFIG_DEPS="${CONFIG_DEPS} \$(SUBDIR_GDBTK_DEPS)"
2180         CONFIG_SRCS="${CONFIG_SRCS} \$(SUBDIR_GDBTK_SRCS)"
2181         CONFIG_ALL="${CONFIG_ALL} all-gdbtk"
2182         CONFIG_CLEAN="${CONFIG_CLEAN} clean-gdbtk"
2183         CONFIG_INSTALL="${CONFIG_INSTALL} install-gdbtk"
2184         CONFIG_UNINSTALL="${CONFIG_UNINSTALL} uninstall-gdbtk"
2185
2186         if test x$gdb_cv_os_cygwin = xyes; then
2187           WIN32LIBS="${WIN32LIBS} -lshell32 -lgdi32 -lcomdlg32 -ladvapi32"
2188           WIN32LDAPP="-Wl,--subsystem,console"
2189           CONFIG_OBS="${CONFIG_OBS} gdbres.o"
2190         fi
2191
2192         AC_CONFIG_SUBDIRS(gdbtk)
2193     fi
2194 fi
2195
2196 AC_SUBST(X_CFLAGS)
2197 AC_SUBST(X_LDFLAGS)
2198 AC_SUBST(X_LIBS)
2199 AC_SUBST(GDBTKLIBS)
2200 AC_SUBST(GDBTK_CFLAGS)
2201 AC_SUBST(GDBTK_SRC_DIR)
2202
2203 AC_PATH_X
2204
2205 # Unlike the sim directory, whether a simulator is linked is controlled by
2206 # presence of a gdb_sim definition in the target configure.tgt entry.
2207 # This code just checks for a few cases where we'd like to ignore those
2208 # definitions, even when they're present in the '.mt' file.  These cases
2209 # are when --disable-sim is specified, or if the simulator directory is
2210 # not part of the source tree.
2211 #
2212 AC_ARG_ENABLE(sim,
2213 AS_HELP_STRING([--enable-sim], [link gdb with simulator]),
2214 [echo "enable_sim = $enable_sim";
2215  echo "enableval = ${enableval}";
2216  case "${enableval}" in
2217   yes) ignore_sim=false ;;
2218   no)  ignore_sim=true ;;
2219   *)   ignore_sim=false ;;
2220  esac],
2221 [ignore_sim=false])
2222
2223 if test ! -d "${srcdir}/../sim"; then
2224   ignore_sim=true
2225 fi
2226
2227 SIM=
2228 SIM_OBS=
2229 if test "${ignore_sim}" = "false"; then
2230   if test x"${gdb_sim}" != x ; then
2231     SIM="${gdb_sim}"
2232     SIM_OBS="remote-sim.o"
2233     AC_DEFINE(WITH_SIM, 1, [Define if the simulator is being linked in.])
2234   fi
2235 fi
2236 AC_SUBST(SIM)
2237 AC_SUBST(SIM_OBS)
2238
2239 AC_SUBST(ENABLE_CFLAGS)
2240 AC_SUBST(PROFILE_CFLAGS)
2241
2242 AC_SUBST(CONFIG_OBS)
2243 AC_SUBST(CONFIG_DEPS)
2244 AC_SUBST(CONFIG_SRCS)
2245 AC_SUBST(CONFIG_ALL)
2246 AC_SUBST(CONFIG_CLEAN)
2247 AC_SUBST(CONFIG_INSTALL)
2248 AC_SUBST(CONFIG_UNINSTALL)
2249
2250 # List of host floatformats.
2251 AC_DEFINE_UNQUOTED(GDB_HOST_FLOAT_FORMAT,$gdb_host_float_format,[Host float floatformat])
2252 AC_DEFINE_UNQUOTED(GDB_HOST_DOUBLE_FORMAT,$gdb_host_double_format,[Host double floatformat])
2253 AC_DEFINE_UNQUOTED(GDB_HOST_LONG_DOUBLE_FORMAT,$gdb_host_long_double_format,[Host long double floatformat])
2254
2255 # target_subdir is used by the testsuite to find the target libraries.
2256 target_subdir=
2257 if test "${host}" != "${target}"; then
2258     target_subdir="${target_alias}/"
2259 fi
2260 AC_SUBST(target_subdir)
2261
2262 frags=
2263 if test "${gdb_native}" = "yes"; then
2264   host_makefile_frag=${srcdir}/config/${gdb_host_cpu}/${gdb_host}.mh
2265   if test ! -f ${host_makefile_frag}; then
2266     AC_MSG_ERROR("*** Gdb does not support native target ${host}")
2267   fi
2268   frags="$frags $host_makefile_frag"
2269 else
2270   host_makefile_frag=/dev/null
2271 fi
2272
2273 AC_SUBST_FILE(host_makefile_frag)
2274 AC_SUBST(frags)
2275
2276 changequote(,)dnl
2277 if test "${gdb_native}" = "yes"; then
2278 # We pick this up from the host configuration file (.mh) because we
2279 # do not have a native configuration Makefile fragment.
2280 nativefile=`sed -n '
2281 s/NAT_FILE[     ]*=[    ]*\([^  ]*\)/\1/p
2282 ' ${host_makefile_frag}`
2283 fi
2284 changequote([,])
2285
2286 if test x"${gdb_osabi}" != x ; then
2287     AC_DEFINE_UNQUOTED(GDB_OSABI_DEFAULT, $gdb_osabi,
2288                        [Define to the default OS ABI for this configuration.])
2289 fi
2290
2291 # Enable multi-ice-gdb-server.
2292 AC_ARG_ENABLE(multi-ice,
2293 AS_HELP_STRING([--enable-multi-ice], [build the multi-ice-gdb-server]),
2294   [case $enableval in
2295     yes | no)
2296       ;;
2297     *) AC_MSG_ERROR([bad value $enableval for --enable-multi-ice]) ;;
2298   esac])
2299 if test "x$enable_multi_ice" = xyes; then
2300    AC_CONFIG_SUBDIRS(multi-ice)
2301 fi
2302
2303 AC_ARG_ENABLE(gdbserver,
2304 AS_HELP_STRING([--enable-gdbserver],
2305                [automatically build gdbserver (yes/no/auto, default is auto)]),
2306 [case "${enableval}" in
2307   yes| no|auto) ;;
2308   *) AC_MSG_ERROR(bad value ${enableval} for --enable-gdbserver option) ;;
2309 esac],[enable_gdbserver=auto])
2310
2311 # We only build gdbserver automatically in a native configuration, and
2312 # only if the user did not explicitly disable its build.
2313 if test "$gdb_native" = "yes" -a "$enable_gdbserver" != "no"; then
2314   AC_MSG_CHECKING(whether gdbserver is supported on this host)
2315   if test "x$build_gdbserver" = xyes; then
2316     AC_MSG_RESULT(yes)
2317     AC_CONFIG_SUBDIRS(gdbserver)
2318     gdbserver_build_enabled=yes
2319   else
2320     AC_MSG_RESULT(no)
2321   fi
2322 fi
2323
2324 # If the user explicitly request the gdbserver to be built, verify that
2325 # we were in fact able to enable it.
2326 if test "$enable_gdbserver" = "yes" -a "$gdbserver_build_enabled" != "yes"; then
2327   AC_MSG_ERROR(Automatic gdbserver build is not supported for this configuration)
2328 fi
2329
2330 # Check for babeltrace and babeltrace-ctf
2331 AC_ARG_WITH(babeltrace,
2332   AC_HELP_STRING([--with-babeltrace], [include babeltrace support (auto/yes/no)]),
2333   [], [with_babeltrace=auto])
2334 AC_MSG_CHECKING([whether to use babeltrace])
2335 AC_MSG_RESULT([$with_babeltrace])
2336
2337 if test "x$with_babeltrace" = "xno"; then
2338   AC_MSG_WARN([babletrace support disabled; GDB is unable to read CTF data.])
2339 else
2340   # Append -Werror to CFLAGS so that configure can catch the warning
2341   # "assignment from incompatible pointer type", which is related to
2342   # the babeltrace change from 1.0.3 to 1.1.0.  Babeltrace 1.1.0 works
2343   # in GDB, while babeltrace 1.0.3 is broken.
2344   # AC_LIB_HAVE_LINKFLAGS may modify CPPFLAGS in it, so it should be
2345   # safe to save and restore CFLAGS here.
2346   saved_CFLAGS=$CFLAGS
2347   CFLAGS="$CFLAGS -Werror"
2348   AC_LIB_HAVE_LINKFLAGS([babeltrace], [babeltrace-ctf],
2349                         [#include <babeltrace/babeltrace.h>
2350                          #include <babeltrace/ctf/events.h>
2351                          #include <babeltrace/ctf/iterator.h>],
2352                         [struct bt_iter_pos *pos = bt_iter_get_pos (bt_ctf_get_iter (NULL));
2353                         struct bt_ctf_event *event = NULL;
2354                         const struct bt_definition *scope;
2355
2356                         scope = bt_ctf_get_top_level_scope (event,
2357                                                            BT_STREAM_EVENT_HEADER);
2358                         bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id"));
2359                         ])
2360   CFLAGS=$saved_CFLAGS
2361
2362   if test "$HAVE_LIBBABELTRACE" != yes; then
2363      if test "$with_babeltrace" = yes; then
2364        AC_MSG_ERROR([babeltrace is missing or unusable])
2365      else
2366        AC_MSG_WARN([babeltrace is missing or unusable; GDB is unable to read CTF data.])
2367      fi
2368   fi
2369 fi
2370
2371 # If nativefile (NAT_FILE) is not set in config/*/*.m[ht] files, we link
2372 # to an empty version.
2373
2374 files=
2375 links=
2376
2377 rm -f nm.h
2378 if test "${nativefile}" != ""; then
2379     case "${nativefile}" in
2380       nm-*.h ) GDB_NM_FILE="config/${gdb_host_cpu}/${nativefile}" ;;
2381       * ) GDB_NM_FILE="${nativefile}"
2382     esac
2383     files="${files} ${GDB_NM_FILE}"
2384     links="${links} nm.h"
2385     AC_DEFINE_UNQUOTED(GDB_NM_FILE, "${GDB_NM_FILE}", [nativefile])
2386 fi
2387 AC_SUBST(GDB_NM_FILE)
2388
2389 AC_LINK_FILES($files, $links)
2390
2391 dnl Check for exe extension set on certain hosts (e.g. Win32)
2392 AC_EXEEXT
2393
2394 dnl  Detect the character set used by this host.
2395 dnl  At the moment, we just assume it's UTF-8.
2396 AC_DEFINE(GDB_DEFAULT_HOST_CHARSET, "UTF-8",
2397           [Define to be a string naming the default host character set.])
2398
2399 # Undo the $ec_script escaping suitable for Makefile.
2400 transform=`echo "$program_transform_name" | sed -e 's/[\\$][\\$]/\\$/g'`
2401 GDB_TRANSFORM_NAME=`echo gdb | sed -e "$transform"`
2402 if test "x$GDB_TRANSFORM_NAME" = x; then
2403   GDB_TRANSFORM_NAME=gdb
2404 fi
2405 AC_SUBST(GDB_TRANSFORM_NAME)
2406 GCORE_TRANSFORM_NAME=`echo gcore | sed -e "$transform"`
2407 if test "x$GCORE_TRANSFORM_NAME" = x; then
2408   GCORE_TRANSFORM_NAME=gcore
2409 fi
2410 AC_SUBST(GCORE_TRANSFORM_NAME)
2411 AC_CONFIG_FILES([gcore], [chmod +x gcore])
2412
2413 AC_OUTPUT(Makefile gdb-gdb.gdb doc/Makefile data-directory/Makefile,
2414 [
2415 case x$CONFIG_HEADERS in
2416 xconfig.h:config.in)
2417 echo > stamp-h ;;
2418 esac
2419 ])
2420
2421 exit 0