gdb/configure.ac

   1 dnl Autoconf configure script for GDB, the GNU debugger.
   2 dnl Copyright (C) 1995-2022 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_INIT
  22 AC_CONFIG_MACRO_DIRS([.. ../config])
  23 AC_CONFIG_SRCDIR([main.c])
  24 AC_CONFIG_HEADERS(config.h:config.in, [echo > stamp-h])
  25 AM_MAINTAINER_MODE
  26
  27 AC_PROG_CC
  28 AC_PROG_CXX
  29
  30 AC_USE_SYSTEM_EXTENSIONS
  31 ACX_LARGEFILE
  32 AM_PROG_INSTALL_STRIP
  33
  34 AC_CONFIG_AUX_DIR(..)
  35
  36 # Set build, build_cpu, build_vendor and build_os.
  37 AC_CANONICAL_BUILD
  38
  39 # Set host, host_cpu, host_vendor, and host_os.
  40 AC_CANONICAL_HOST
  41
  42 # Set target, target_cpu, target_vendor, and target_os.
  43 AC_CANONICAL_TARGET
  44
  45 ACX_NONCANONICAL_TARGET
  46
  47 AC_ARG_PROGRAM
  48
  49 # We require libtool to link with the in-tree libtool libraries
  50 # the proper way.
  51 LT_INIT
  52 # ... and we need it soon, since it is used by some of the
  53 # link tests in the configure script.
  54 LT_OUTPUT
  55
  56 # We require a C++11 compiler.  Check if one is available, and if
  57 # necessary, set CXX_DIALECT to some -std=xxx switch.
  58 AX_CXX_COMPILE_STDCXX(11, , mandatory)
  59
  60 # Dependency checking.
  61 ZW_CREATE_DEPDIR
  62 ZW_PROG_COMPILER_DEPENDENCIES([CC])
  63
  64 dnl List of object files and targets accumulated by configure.
  65
  66 CONFIG_OBS=
  67 CONFIG_DEPS=
  68 CONFIG_SRCS=
  69 ENABLE_CFLAGS=
  70
  71 CONFIG_ALL=
  72 CONFIG_CLEAN=
  73 CONFIG_INSTALL=
  74 CONFIG_UNINSTALL=
  75
  76 dnl Set up for gettext.
  77 ZW_GNU_GETTEXT_SISTER_DIR
  78
  79 localedir='${datadir}/locale'
  80 AC_SUBST(localedir)
  81
  82 if test x"$USE_NLS" = xyes; then
  83    CONFIG_ALL="$CONFIG_ALL all-po"
  84    CONFIG_CLEAN="$CONFIG_CLEAN clean-po"
  85    CONFIG_INSTALL="$CONFIG_INSTALL install-po"
  86    CONFIG_UNINSTALL="$CONFIG_UNINSTALL uninstall-po"
  87 fi
  88
  89 PACKAGE=gdb
  90 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of this package. ])
  91 AC_SUBST(PACKAGE)
  92
  93 # We never need to detect it in this sub-configure.
  94 # But preserve it for config.status --recheck.
  95 AC_ARG_VAR(MAKEINFO,
  96   [Parent configure detects if it is of sufficient version.])
  97 AC_ARG_VAR(MAKEINFOFLAGS,
  98   [Parameters for MAKEINFO.])
  99
 100 MAKEINFO_EXTRA_FLAGS=""
 101 AC_CACHE_CHECK([whether $MAKEINFO supports @click], gdb_cv_have_makeinfo_click,
 102   [echo '@clicksequence{a @click{} b}' >conftest.texinfo
 103   if eval "$MAKEINFO conftest.texinfo >&5 2>&5"; then
 104     gdb_cv_have_makeinfo_click=yes
 105   else
 106     gdb_cv_have_makeinfo_click=no
 107   fi])
 108 if test x"$gdb_cv_have_makeinfo_click" = xyes; then
 109   MAKEINFO_EXTRA_FLAGS="$MAKEINFO_EXTRA_FLAGS -DHAVE_MAKEINFO_CLICK"
 110 fi
 111 AC_SUBST(MAKEINFO_EXTRA_FLAGS)
 112
 113 GDB_AC_WITH_DIR(DEBUGDIR, separate-debug-dir,
 114     [look for global separate debug info in this path @<:@LIBDIR/debug@:>@],
 115     [${libdir}/debug])
 116
 117 # We can't pass paths as command line arguments.
 118 # Mingw32 tries to be clever and will convert the paths for us.
 119 # For example -DBINDIR="/usr/local/bin" passed on the command line may get
 120 # converted to -DBINDIR="E:/msys/mingw32/msys/1.0/local/bin".
 121 # This breaks GDB's relocatable path conversions since paths passed in
 122 # config.h would not get so translated, the path prefixes no longer match.
 123 AC_DEFINE_DIR(BINDIR, bindir, [Directory of programs.])
 124
 125 # GDB's datadir relocation
 126
 127 GDB_AC_WITH_DIR(GDB_DATADIR, gdb-datadir,
 128     [look for global separate data files in this path @<:@DATADIR/gdb@:>@],
 129     [${datadir}/gdb])
 130
 131 AC_ARG_WITH(relocated-sources,
 132 AS_HELP_STRING([--with-relocated-sources=PATH], [automatically relocate this path for source files]),
 133 [reloc_srcdir="${withval}"
 134  AC_DEFINE_DIR(RELOC_SRCDIR, reloc_srcdir,
 135               [Relocated directory for source files. ])
 136 ])
 137
 138 AC_MSG_CHECKING([for default auto-load directory])
 139 AC_ARG_WITH(auto-load-dir,
 140 AS_HELP_STRING([--with-auto-load-dir=PATH],
 141   [directories from which to load auto-loaded scripts @<:@$debugdir:$datadir/auto-load@:>@]),,
 142   [with_auto_load_dir='$debugdir:$datadir/auto-load'])
 143 escape_dir=`echo $with_auto_load_dir | sed -e 's/[[$]]datadir\>/\\\\\\\\\\\\&/g' -e 's/[[$]]debugdir\>/\\\\\\\\\\\\&/g'`
 144 AC_DEFINE_DIR(AUTO_LOAD_DIR, escape_dir,
 145               [Directories from which to load auto-loaded scripts.])
 146 AC_MSG_RESULT([$with_auto_load_dir])
 147
 148 AC_MSG_CHECKING([for default auto-load safe-path])
 149 AC_ARG_WITH(auto-load-safe-path,
 150 AS_HELP_STRING([--with-auto-load-safe-path=PATH],
 151   [directories safe to hold auto-loaded files @<:@--with-auto-load-dir@:>@])
 152 AS_HELP_STRING([--without-auto-load-safe-path],
 153                [do not restrict auto-loaded files locations]),
 154     [if test "$with_auto_load_safe_path" = "no"; then
 155      with_auto_load_safe_path="/"
 156      fi],
 157 [with_auto_load_safe_path="$with_auto_load_dir"])
 158 escape_dir=`echo $with_auto_load_safe_path | sed -e 's/[[$]]datadir\>/\\\\\\\\\\\\&/g' -e 's/[[$]]debugdir\>/\\\\\\\\\\\\&/g'`
 159 AC_DEFINE_DIR(AUTO_LOAD_SAFE_PATH, escape_dir,
 160               [Directories safe to hold auto-loaded files.])
 161 AC_MSG_RESULT([$with_auto_load_safe_path])
 162
 163 AC_CONFIG_SUBDIRS(testsuite)
 164
 165 # Check whether to support alternative target configurations
 166 AC_ARG_ENABLE(targets,
 167 AS_HELP_STRING([--enable-targets=TARGETS], [alternative target configurations]),
 168 [case "${enableval}" in
 169   yes | "") AC_MSG_ERROR(enable-targets option must specify target names or 'all')
 170             ;;
 171   no)       enable_targets= ;;
 172   *)        enable_targets=$enableval ;;
 173 esac])
 174
 175 BFD_64_BIT
 176
 177 # Provide defaults for some variables set by the per-host and per-target
 178 # configuration.
 179 gdb_host_obs=posix-hdep.o
 180
 181 if test "${target}" = "${host}"; then
 182   gdb_native=yes
 183 else
 184   gdb_native=no
 185 fi
 186
 187 . $srcdir/configure.host
 188
 189 # Accumulate some settings from configure.tgt over all enabled targets
 190
 191 TARGET_OBS=
 192 all_targets=
 193 HAVE_NATIVE_GCORE_TARGET=
 194
 195 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
 196 do
 197   if test "$targ_alias" = "all"; then
 198     all_targets=true
 199   else
 200     # Canonicalize the secondary target names.
 201     result=`$ac_config_sub $targ_alias 2>/dev/null`
 202     if test -n "$result"; then
 203         targ=$result
 204     else
 205         targ=$targ_alias
 206     fi
 207
 208     . ${srcdir}/configure.tgt
 209
 210     AS_IF([test -z "${gdb_target_obs}"],
 211       [AC_MSG_ERROR([configuration ${targ} is unsupported.])])
 212
 213     # Target-specific object files
 214     for i in ${gdb_target_obs}; do
 215         case " $TARGET_OBS " in
 216         *" ${i} "*) ;;
 217         *)
 218           TARGET_OBS="$TARGET_OBS ${i}"
 219           ;;
 220         esac
 221     done
 222
 223     # Check whether this target needs 64-bit CORE_ADDR
 224     if test x${enable_64_bit_bfd} = xno; then
 225       . ${srcdir}/../bfd/config.bfd
 226     fi
 227
 228     # Check whether this target is native and supports gcore.
 229     if test $gdb_native = yes -a "$targ_alias" = "$target_alias" \
 230        && $gdb_have_gcore; then
 231       HAVE_NATIVE_GCORE_TARGET=1
 232     fi
 233   fi
 234 done
 235
 236 if test x${all_targets} = xtrue; then
 237   if test x${enable_64_bit_bfd} = xyes; then
 238     TARGET_OBS='$(ALL_TARGET_OBS) $(ALL_64_TARGET_OBS)'
 239   else
 240     TARGET_OBS='$(ALL_TARGET_OBS)'
 241   fi
 242 fi
 243
 244 AC_SUBST(TARGET_OBS)
 245 AC_SUBST(HAVE_NATIVE_GCORE_TARGET)
 246
 247 # For other settings, only the main target counts.
 248 gdb_sim=
 249 gdb_osabi=
 250 targ=$target; . ${srcdir}/configure.tgt
 251
 252 # Fetch the default architecture and default target vector from BFD.
 253 targ=$target; . $srcdir/../bfd/config.bfd
 254
 255 # We only want the first architecture, so strip off the others if
 256 # there is more than one.
 257 targ_archs=`echo $targ_archs | sed 's/ .*//'`
 258
 259 if test "x$targ_archs" != x; then
 260   AC_DEFINE_UNQUOTED(DEFAULT_BFD_ARCH, $targ_archs,
 261     [Define to BFD's default architecture. ])
 262 fi
 263 if test "x$targ_defvec" != x; then
 264   AC_DEFINE_UNQUOTED(DEFAULT_BFD_VEC, $targ_defvec,
 265     [Define to BFD's default target vector. ])
 266 fi
 267
 268 # Enable MI.
 269 AC_ARG_ENABLE([gdbmi],
 270               [AS_HELP_STRING([--disable-gdbmi], [disable machine-interface (MI)])],
 271               [GDB_CHECK_YES_NO_VAL([$enableval], [--enable-gdbmi])],
 272               [enable_gdbmi=yes])
 273 if test x"$enable_gdbmi" = xyes; then
 274   if test -d "$srcdir/mi"; then
 275     CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_MI_OBS)"
 276     CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_MI_DEPS)"
 277     CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_MI_SRCS)"
 278     ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_MI_CFLAGS)"
 279   fi
 280 fi
 281
 282 # Enable TUI.
 283 AC_ARG_ENABLE(tui,
 284 AS_HELP_STRING([--enable-tui],
 285                [enable full-screen terminal user interface (TUI)]),
 286                [GDB_CHECK_YES_NO_AUTO_VAL([$enableval], [--enable-tui])],
 287                [enable_tui=auto])
 288
 289 # Enable gdbtk.
 290 AC_ARG_ENABLE([gdbtk],
 291               [AS_HELP_STRING([--enable-gdbtk], [enable gdbtk graphical user interface (GUI)])],
 292               [GDB_CHECK_YES_NO_VAL([$enableval], [--enable-gdbtk])],
 293               [if test -d "$srcdir/gdbtk"; then
 294                  enable_gdbtk=yes
 295                else
 296                  enable_gdbtk=no
 297                fi])
 298 # We unconditionally disable gdbtk tests on selected platforms.
 299 case $host_os in
 300   go32* | windows*)
 301     AC_MSG_WARN([gdbtk isn't supported on $host; disabling])
 302     enable_gdbtk=no ;;
 303 esac
 304
 305 # Handle optional debuginfod support
 306 AC_DEBUGINFOD
 307
 308 # Libunwind support for ia64.
 309 AC_ARG_WITH(libunwind-ia64,
 310 AS_HELP_STRING([--with-libunwind-ia64],
 311                [use libunwind frame unwinding for ia64 targets]),,
 312             [with_libunwind_ia64=auto])
 313
 314 # Backward compatibility option.
 315 if test "${with_libunwind+set}" = set; then
 316   if test x"$with_libunwind_ia64" != xauto; then
 317     AC_MSG_ERROR(
 318       [option --with-libunwind is deprecated, use --with-libunwind-ia64])
 319   fi
 320   AC_MSG_WARN([option --with-libunwind is deprecated, use --with-libunwind-ia64])
 321   with_libunwind_ia64="$with_libunwind"
 322 fi
 323
 324 case "$with_libunwind_ia64" in
 325   yes | no)
 326     ;;
 327   auto)
 328     AC_CHECK_HEADERS(libunwind-ia64.h)
 329     with_libunwind_ia64=$ac_cv_header_libunwind_ia64_h
 330     ;;
 331   *)
 332     AC_MSG_ERROR(
 333       [bad value $with_libunwind_ia64 for GDB --with-libunwind-ia64 option])
 334     ;;
 335 esac
 336
 337 if test x"$with_libunwind_ia64" = xyes; then
 338   AC_CHECK_HEADERS(libunwind-ia64.h)
 339   if test x"$ac_cv_header_libunwind_ia64_h" != xyes; then
 340     AC_MSG_ERROR([GDB option --with-libunwind-ia64 requires libunwind-ia64.h])
 341   fi
 342   CONFIG_OBS="$CONFIG_OBS ia64-libunwind-tdep.o"
 343   CONFIG_DEPS="$CONFIG_DEPS ia64-libunwind-tdep.o"
 344   CONFIG_SRCS="$CONFIG_SRCS ia64-libunwind-tdep.c"
 345 fi
 346
 347 opt_curses=no
 348 AC_ARG_WITH(curses, AS_HELP_STRING([--with-curses], [use the curses library instead of the termcap library]), opt_curses=$withval)
 349
 350 prefer_curses=no
 351 if test "$opt_curses" = "yes"; then
 352   prefer_curses=yes
 353 fi
 354
 355 # Profiling support.
 356 AC_ARG_ENABLE([profiling],
 357               [AS_HELP_STRING([--enable-profiling], [enable profiling of GDB])],
 358               [GDB_CHECK_YES_NO_VAL([$enableval], [--enable-profiling])],
 359               [enable_profiling=no])
 360
 361 AC_CHECK_FUNCS(monstartup _mcleanup)
 362 AC_CACHE_CHECK(
 363   [for _etext],
 364   [ac_cv_var__etext],
 365   [AC_LINK_IFELSE(
 366      [AC_LANG_PROGRAM(
 367         [#include <stdlib.h>
 368          extern char _etext;],
 369         [free (&_etext);]
 370       )],
 371      [ac_cv_var__etext=yes],
 372      [ac_cv_var__etext=no]
 373    )]
 374 )
 375 if test "$ac_cv_var__etext" = yes; then
 376   AC_DEFINE(HAVE__ETEXT, 1,
 377             [Define to 1 if your system has the _etext variable. ])
 378 fi
 379 AC_CACHE_CHECK(
 380   [for etext],
 381   [ac_cv_var_etext],
 382   [AC_LINK_IFELSE(
 383      [AC_LANG_PROGRAM(
 384         [#include <stdlib.h>
 385          extern char etext;],
 386         [free (&etext);]
 387       )],
 388      [ac_cv_var_etext=yes],
 389      [ac_cv_var_etext=no]
 390    )]
 391 )
 392 if test "$ac_cv_var_etext" = yes; then
 393   AC_DEFINE(HAVE_ETEXT, 1,
 394             [Define to 1 if your system has the etext variable. ])
 395 fi
 396 if test "$enable_profiling" = yes ; then
 397   if test "$ac_cv_func_monstartup" = no || test "$ac_cv_func__mcleanup" = no; then
 398     AC_MSG_ERROR(--enable-profiling requires monstartup and _mcleanup)
 399   fi
 400   PROFILE_CFLAGS=-pg
 401   OLD_CFLAGS="$CFLAGS"
 402   CFLAGS="$CFLAGS $PROFILE_CFLAGS"
 403
 404   AC_CACHE_CHECK(
 405     [whether $CC supports -pg],
 406     [ac_cv_cc_supports_pg],
 407     [AC_COMPILE_IFELSE(
 408        [AC_LANG_PROGRAM([], [int x;])],
 409        [ac_cv_cc_supports_pg=yes],
 410        [ac_cv_cc_supports_pg=no]
 411      )]
 412   )
 413
 414   if test "$ac_cv_cc_supports_pg" = no; then
 415     AC_MSG_ERROR(--enable-profiling requires a compiler which supports -pg)
 416   fi
 417
 418   CFLAGS="$OLD_CFLAGS"
 419 fi
 420
 421 CODESIGN_CERT=
 422 AC_ARG_ENABLE([codesign],
 423   AS_HELP_STRING([--enable-codesign=CERT],
 424                  [sign gdb with 'codesign -s CERT']),
 425   [CODESIGN_CERT=$enableval])
 426 AC_SUBST([CODESIGN_CERT])
 427
 428 ACX_PKGVERSION([GDB])
 429 ACX_BUGURL([https://www.gnu.org/software/gdb/bugs/])
 430 AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
 431 AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
 432
 433 # --------------------- #
 434 # Checks for programs.  #
 435 # --------------------- #
 436
 437 AC_PROG_AWK
 438 AC_PROG_INSTALL
 439 AC_PROG_LN_S
 440 AC_PROG_RANLIB
 441 AC_PROG_YACC
 442
 443 AC_CHECK_TOOL(AR, ar)
 444 AC_CHECK_TOOL(DLLTOOL, dlltool)
 445 AC_CHECK_TOOL(WINDRES, windres)
 446
 447 case $host_os in
 448   gnu*)
 449     # Needed for GNU Hurd hosts.
 450     AC_CHECK_TOOL(MIG, mig)
 451     if test x"$MIG" = x; then
 452       AC_MSG_ERROR([MIG not found but required for $host hosts])
 453     fi
 454     ;;
 455 esac
 456
 457 # ---------------------- #
 458 # Checks for libraries.  #
 459 # ---------------------- #
 460
 461 # We might need to link with -lm; most simulators need it.
 462 AC_CHECK_LIB(m, main)
 463
 464 # Some systems (e.g. Solaris) have `gethostbyname' in libnsl.
 465 AC_SEARCH_LIBS(gethostbyname, nsl)
 466
 467 # Some systems (e.g. Solaris) have `socketpair' in libsocket.
 468 AC_SEARCH_LIBS(socketpair, socket)
 469
 470 # Link in zlib/zstd if we can.  This allows us to read compressed debug
 471 # sections.
 472 AM_ZLIB
 473 AC_ZSTD
 474
 475 AM_ICONV
 476
 477 # GDB may fork/exec the iconv program to get the list of supported character
 478 # sets.  Allow the user to specify where to find it.
 479 # There are several factors affecting the choice of option name:
 480 # - There is already --with-libiconv-prefix but we can't use it, it specifies
 481 #   the build-time location of libiconv files.
 482 # - The program we need to find is iconv, which comes with glibc.  The user
 483 #   doesn't necessarily have libiconv installed.  Therefore naming this
 484 #   --with-libiconv-foo feels wrong.
 485 # - We want the path to be relocatable, but GDB_AC_DEFINE_RELOCATABLE is
 486 #   defined to work on directories not files (though it really doesn't know
 487 #   the difference).
 488 # - Calling this --with-iconv-prefix is perceived to cause too much confusion
 489 #   with --with-libiconv-prefix.
 490 # Putting these together is why the option name is --with-iconv-bin.
 491
 492 AC_ARG_WITH(iconv-bin,
 493 AS_HELP_STRING([--with-iconv-bin=PATH], [specify where to find the iconv program]),
 494 [iconv_bin="${withval}"
 495  AC_DEFINE_UNQUOTED([ICONV_BIN], ["${iconv_bin}"],
 496                     [Path of directory of iconv program.])
 497  GDB_AC_DEFINE_RELOCATABLE(ICONV_BIN, iconv, ${iconv_bin})
 498 ])
 499
 500 # For the TUI, we need enhanced curses functionality.
 501 if test x"$enable_tui" != xno; then
 502   prefer_curses=yes
 503 fi
 504
 505 curses_found=no
 506 if test x"$prefer_curses" = xyes; then
 507   # FIXME: kettenis/20040905: We prefer ncurses over the vendor-supplied
 508   # curses library because the latter might not provide all the
 509   # functionality we need.  However, this leads to problems on systems
 510   # where the linker searches /usr/local/lib, but the compiler doesn't
 511   # search /usr/local/include, if ncurses is installed in /usr/local.  A
 512   # default installation of ncurses on alpha*-dec-osf* will lead to such
 513   # a situation.
 514   AC_SEARCH_LIBS(waddstr, [ncursesw ncurses cursesX curses])
 515
 516   if test "$ac_cv_search_waddstr" != no; then
 517     curses_found=yes
 518   fi
 519 fi
 520
 521 # Check whether we should enable the TUI, but only do so if we really
 522 # can.
 523 if test x"$enable_tui" != xno; then
 524   if test -d "$srcdir/tui"; then
 525     if test "$curses_found" != no; then
 526       CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_TUI_OBS)"
 527       CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_TUI_DEPS)"
 528       CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_TUI_SRCS)"
 529       ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_TUI_CFLAGS)"
 530     else
 531       if test x"$enable_tui" = xyes; then
 532         AC_MSG_ERROR([no enhanced curses library found; disable TUI])
 533       else
 534         AC_MSG_WARN([no enhanced curses library found; disabling TUI])
 535       fi
 536     fi
 537   fi
 538 fi
 539
 540 # Since GDB uses Readline, we need termcap functionality.  In many
 541 # cases this will be provided by the curses library, but some systems
 542 # have a separate termcap library, or no curses library at all.
 543
 544 case $host_os in
 545   cygwin*)
 546     if test -d "$srcdir/libtermcap"; then
 547       LIBS="../libtermcap/libtermcap.a $LIBS"
 548       ac_cv_search_tgetent="../libtermcap/libtermcap.a"
 549     fi ;;
 550   go32* | *djgpp*)
 551     ac_cv_search_tgetent="none required"
 552     ;;
 553 esac
 554
 555 # These are the libraries checked by Readline.
 556 AC_SEARCH_LIBS(tgetent, [termcap tinfow tinfo curses ncursesw ncurses])
 557
 558 if test "$ac_cv_search_tgetent" = no; then
 559   CONFIG_OBS="$CONFIG_OBS stub-termcap.o"
 560 fi
 561
 562 AC_ARG_WITH([system-readline],
 563   [AS_HELP_STRING([--with-system-readline],
 564                   [use installed readline library])])
 565
 566 if test "$with_system_readline" = yes; then
 567   AC_CHECK_HEADERS(readline/readline.h, [readline_h=yes], [readline_h=no])
 568   if test "$readline_h" = "no"; then
 569     AC_MSG_ERROR([readline development packages are probably missing])
 570   fi
 571   AC_CACHE_CHECK(
 572     [whether system readline is new enough],
 573     [gdb_cv_readline_ok],
 574     [AC_COMPILE_IFELSE(
 575        [AC_LANG_PROGRAM(
 576           [#include <stdio.h>
 577            #include <readline/readline.h>],
 578           [#if RL_VERSION_MAJOR < 7
 579            # error "readline version 7 required"
 580            #endif]
 581         )],
 582        [gdb_cv_readline_ok=yes],
 583        [gdb_cv_readline_ok=no]
 584      )]
 585   )
 586   if test "$gdb_cv_readline_ok" != yes; then
 587     AC_MSG_ERROR([system readline is not new enough])
 588   fi
 589
 590   READLINE=-lreadline
 591   READLINE_DEPS=
 592   READLINE_CFLAGS=
 593   READLINE_TEXI_INCFLAG=
 594 else
 595   READLINE='$(READLINE_DIR)/libreadline.a'
 596   READLINE_DEPS='$(READLINE)'
 597   READLINE_CFLAGS='-I$(READLINE_SRC)/..'
 598   READLINE_TEXI_INCFLAG='-I $(READLINE_DIR)'
 599 fi
 600 AC_SUBST(READLINE)
 601 AC_SUBST(READLINE_DEPS)
 602 AC_SUBST(READLINE_CFLAGS)
 603 AC_SUBST(READLINE_TEXI_INCFLAG)
 604
 605 # Generate jit-reader.h
 606
 607 # This is typedeffed to GDB_CORE_ADDR in jit-reader.h
 608 TARGET_PTR=
 609
 610 AC_CHECK_SIZEOF(unsigned long long)
 611 AC_CHECK_SIZEOF(unsigned long)
 612 AC_CHECK_SIZEOF(unsigned __int128)
 613
 614 if test "x${ac_cv_sizeof_unsigned_long}" = "x8"; then
 615   TARGET_PTR="unsigned long"
 616 elif test "x${ac_cv_sizeof_unsigned_long_long}" = "x8"; then
 617   TARGET_PTR="unsigned long long"
 618 elif test "x${ac_cv_sizeof_unsigned___int128}" = "x16"; then
 619   TARGET_PTR="unsigned __int128"
 620 else
 621   TARGET_PTR="unsigned long"
 622 fi
 623
 624 AC_SUBST(TARGET_PTR)
 625 AC_CONFIG_FILES([jit-reader.h:jit-reader.in])
 626
 627 AC_SEARCH_LIBS(dlopen, dl)
 628
 629 GDB_AC_WITH_DIR([JIT_READER_DIR], [jit-reader-dir],
 630                 [directory to load the JIT readers from],
 631                 [${libdir}/gdb])
 632
 633 AC_ARG_WITH(expat,
 634   AS_HELP_STRING([--with-expat], [include expat support (auto/yes/no)]),
 635   [], [with_expat=auto])
 636 AC_MSG_CHECKING([whether to use expat])
 637 AC_MSG_RESULT([$with_expat])
 638
 639 if test "${with_expat}" = no; then
 640   AC_MSG_WARN([expat support disabled; some features may be unavailable.])
 641   HAVE_LIBEXPAT=no
 642 else
 643   AC_LIB_HAVE_LINKFLAGS([expat], [], [#include "expat.h"],
 644                         [XML_Parser p = XML_ParserCreate (0);])
 645   if test "$HAVE_LIBEXPAT" != yes; then
 646     if test "$with_expat" = yes; then
 647       AC_MSG_ERROR([expat is missing or unusable])
 648     else
 649       AC_MSG_WARN([expat is missing or unusable; some features may be unavailable.])
 650     fi
 651   else
 652     save_LIBS=$LIBS
 653     LIBS="$LIBS $LIBEXPAT"
 654     AC_CHECK_FUNCS(XML_StopParser)
 655     LIBS=$save_LIBS
 656   fi
 657 fi
 658
 659 AC_ARG_VAR(GMPLIBS,[How to link GMP])
 660 AC_ARG_VAR(GMPINC,[How to find GMP include files])
 661
 662 # --------------------- #
 663 # Check for libpython.  #
 664 # --------------------- #
 665
 666 dnl Utility to simplify finding libpython.
 667 dnl $1 = the shell variable to assign the result to
 668 dnl      If libpython is found we store $version here.
 669 dnl $2 = additional flags to add to CPPFLAGS
 670 dnl $3 = additional flags to add to LIBS
 671
 672 AC_DEFUN([AC_TRY_LIBPYTHON],
 673 [
 674   define([have_libpython_var],$1)
 675   new_CPPFLAGS=$2
 676   new_LIBS=$3
 677   AC_MSG_CHECKING([for python])
 678   save_CPPFLAGS=$CPPFLAGS
 679   save_LIBS=$LIBS
 680   CPPFLAGS="$CPPFLAGS $new_CPPFLAGS"
 681   LIBS="$new_LIBS $LIBS"
 682   found_usable_python=no
 683   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include "Python.h"]],
 684                                  [[
 685                                     #if PY_MAJOR_VERSION != 3
 686                                     # error "We only support Python 3"
 687                                     #endif
 688                                     Py_Initialize ();
 689                                  ]])],
 690                  [have_libpython_var=yes
 691                   found_usable_python=yes
 692                   PYTHON_CPPFLAGS=$new_CPPFLAGS
 693                   PYTHON_LIBS=$new_LIBS])
 694   CPPFLAGS=$save_CPPFLAGS
 695   LIBS=$save_LIBS
 696   AC_MSG_RESULT([${found_usable_python}])
 697 ])
 698
 699 dnl There are several different values for --with-python:
 700 dnl
 701 dnl no -   Don't include python support.
 702 dnl yes -  Include python support, error if it's missing.
 703 dnl        If we find python in $PATH, use it to fetch configure options,
 704 dnl        otherwise assume the compiler can find it with no help from us.
 705 dnl auto - Same as "yes", but if python is missing from the system,
 706 dnl        fall back to "no".
 707 dnl /path/to/python/exec-prefix -
 708 dnl        Use the python located in this directory.
 709 dnl        If /path/to/python/exec-prefix/bin/python exists, use it to find
 710 dnl        the compilation parameters.  Otherwise use
 711 dnl        -I/path/to/python/exec-prefix/include,
 712 dnl        -L/path/to/python/exec-prefix/lib.
 713 dnl        NOTE: This case is historical.  It is what was done for 7.0/7.1
 714 dnl        but is deprecated.
 715 dnl /path/to/python/executable -
 716 dnl        Run python-config.py with this version of python to fetch the
 717 dnl        compilation parameters.
 718 dnl        NOTE: This needn't be the real python executable.
 719 dnl        In a cross-compilation scenario (build != host), this could be
 720 dnl        a shell script that provides what python-config.py provides for
 721 dnl        --ldflags, --includes, --exec-prefix.
 722 dnl python-executable -
 723 dnl        Find python-executable in $PATH, and then handle the same as
 724 dnl        /path/to/python/executable.
 725 dnl
 726 dnl If a python program is specified, it is used to run python-config.py and
 727 dnl is passed --ldflags, --includes, --exec-prefix.
 728
 729 AC_ARG_WITH(python,
 730   AS_HELP_STRING([--with-python@<:@=PYTHON@:>@], [include python support (auto/yes/no/<python-program>)]),
 731   [], [with_python=auto])
 732 AC_MSG_CHECKING([whether to use python])
 733 AC_MSG_RESULT([$with_python])
 734
 735 if test "${with_python}" = no; then
 736   AC_MSG_WARN([python support disabled; some features may be unavailable.])
 737   have_libpython=no
 738 else
 739   case "${with_python}" in
 740   [[\\/]]* | ?:[[\\/]]*)
 741     if test -d "${with_python}"; then
 742       # Assume the python binary is ${with_python}/bin/python.
 743       python_prog="${with_python}/bin/python"
 744       python_prefix=
 745       # If python does not exit ${with_python}/bin, then try in
 746       # ${with_python}.  On Windows/MinGW, this is where the Python
 747       # executable is.
 748       if test ! -x "${python_prog}"; then
 749         python_prog="${with_python}/python"
 750         python_prefix=
 751       fi
 752       if test ! -x "${python_prog}"; then
 753         # Fall back to gdb 7.0/7.1 behaviour.
 754         python_prog=missing
 755         python_prefix=${with_python}
 756       fi
 757     elif test -x "${with_python}"; then
 758       # While we can't run python compiled for $host (unless host == build),
 759       # the user could write a script that provides the needed information,
 760       # so we support that.
 761       python_prog=${with_python}
 762       python_prefix=
 763     else
 764       AC_MSG_ERROR(invalid value for --with-python)
 765     fi
 766     ;;
 767   */*)
 768     # Disallow --with-python=foo/bar.
 769     AC_MSG_ERROR(invalid value for --with-python)
 770     ;;
 771   *)
 772     # The user has either specified auto, yes, or the name of the python
 773     # program assumed to be in $PATH.
 774     python_prefix=
 775     case "${with_python}" in
 776     yes | auto)
 777       if test "${build}" = "${host}"; then
 778         # Look first for 'python', then 'python3'.
 779         AC_PATH_PROGS(python_prog_path, [python python3], missing)
 780         if test "${python_prog_path}" = missing; then
 781           python_prog=missing
 782         else
 783           python_prog=${python_prog_path}
 784         fi
 785       else
 786         # Not much we can do except assume the cross-compiler will find the
 787         # right files.
 788         python_prog=missing
 789       fi
 790       ;;
 791     *)
 792       # While we can't run python compiled for $host (unless host == build),
 793       # the user could write a script that provides the needed information,
 794       # so we support that.
 795       python_prog="${with_python}"
 796       AC_PATH_PROG(python_prog_path, ${python_prog}, missing)
 797       if test "${python_prog_path}" = missing; then
 798         AC_MSG_ERROR(unable to find python program ${python_prog})
 799       fi
 800       ;;
 801     esac
 802   esac
 803
 804   if test "${python_prog}" != missing; then
 805     # We have a python program to use, but it may be too old.
 806     # Don't flag an error for --with-python=auto (the default).
 807     have_python_config=yes
 808     python_includes=`${python_prog} ${srcdir}/python/python-config.py --includes`
 809     if test $? != 0; then
 810       have_python_config=failed
 811       if test "${with_python}" != auto; then
 812         AC_MSG_ERROR(failure running python-config --includes)
 813       fi
 814     fi
 815     python_libs=`${python_prog} ${srcdir}/python/python-config.py --ldflags`
 816     if test $? != 0; then
 817       have_python_config=failed
 818       if test "${with_python}" != auto; then
 819         AC_MSG_ERROR(failure running python-config --ldflags)
 820       fi
 821     fi
 822     python_prefix=`${python_prog} ${srcdir}/python/python-config.py --exec-prefix`
 823     if test $? != 0; then
 824       have_python_config=failed
 825       if test "${with_python}" != auto; then
 826         AC_MSG_ERROR(failure running python-config --exec-prefix)
 827       fi
 828     fi
 829   else
 830     # We do not have a python executable we can use to determine where
 831     # to find the Python headers and libs.  We cannot guess the include
 832     # path from the python_prefix either, because that include path
 833     # depends on the Python version.  So, there is nothing much we can
 834     # do except assume that the compiler will be able to find those files.
 835     python_includes=
 836     python_libs=
 837     have_python_config=no
 838   fi
 839
 840   # If we have python-config, only try the configuration it provides.
 841   # Otherwise fallback on the old way of trying different versions of
 842   # python in turn.
 843
 844   have_libpython=no
 845   if test "${have_python_config}" = yes; then
 846     AC_TRY_LIBPYTHON(have_libpython,
 847                      ${python_includes}, ${python_libs})
 848   fi
 849
 850   if test "${have_libpython}" = no; then
 851     case "${with_python}" in
 852     yes)
 853       AC_MSG_ERROR([python is missing or unusable])
 854       ;;
 855     auto)
 856       AC_MSG_WARN([python is missing or unusable; some features may be unavailable.])
 857       ;;
 858     *)
 859       AC_MSG_ERROR([no usable python found at ${with_python}])
 860       ;;
 861     esac
 862   else
 863     if test -n "${python_prefix}"; then
 864       AC_DEFINE_UNQUOTED(WITH_PYTHON_PATH, "${python_prefix}",
 865                          [Define if --with-python provides a path, either directly or via python-config.py --exec-prefix.])
 866       GDB_AC_DEFINE_RELOCATABLE(PYTHON_PATH, python, ${python_prefix})
 867     fi
 868   fi
 869 fi
 870
 871 dnl Use --with-python-libdir to control where GDB looks for the Python
 872 dnl libraries.
 873 dnl
 874 dnl If this is not given then the default will be based on the value
 875 dnl passed to --with-python, which is in the python_prefix variable.
 876 dnl If the --with-python option wasn't given then the default value in
 877 dnl python_prefix is based on running the 'gdb/python/python-config
 878 dnl --exec-prefix' script.
 879 AC_ARG_WITH(python-libdir,
 880   AS_HELP_STRING([--with-python-libdir@<:@=DIR@:>@], [search for python's libraries in DIR]),
 881   [],[
 882     # If no python libdir is specified then select one based on
 883     # python's prefix path.
 884     if test -n "${python_prefix}"; then
 885       with_python_libdir=${python_prefix}/lib
 886     fi
 887   ])
 888
 889 if test "${have_libpython}" != no; then
 890   AC_DEFINE(HAVE_PYTHON, 1, [Define if Python interpreter is being linked in.])
 891   CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_PYTHON_OBS)"
 892   CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_PYTHON_DEPS)"
 893   CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_PYTHON_SRCS)"
 894   CONFIG_INSTALL="$CONFIG_INSTALL install-python"
 895   ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_PYTHON_CFLAGS)"
 896
 897   if test -n "${with_python_libdir}"; then
 898     AC_DEFINE_UNQUOTED(WITH_PYTHON_LIBDIR, "${with_python_libdir}",
 899                        [Directory containing Python's standard libraries from --with-python-libdir.])
 900     GDB_AC_DEFINE_RELOCATABLE(PYTHON_LIBDIR, [python lib], ${with_python_libdir})
 901   fi
 902
 903   # Flags needed to compile Python code (taken from python-config --cflags).
 904   # We cannot call python-config directly because it will output whatever was
 905   # used when compiling the Python interpreter itself, including flags which
 906   # would make the python-related objects be compiled differently from the
 907   # rest of GDB (e.g., -O2 and -fPIC).
 908   if test "${GCC}" = yes; then
 909     tentative_python_cflags="-fno-strict-aliasing -fwrapv"
 910     # Python headers recommend -DNDEBUG, but it's unclear if that just
 911     # refers to building Python itself.  In release mode, though, it
 912     # doesn't hurt for the Python code in gdb to follow.
 913     $development || tentative_python_cflags="$tentative_python_cflags -DNDEBUG"
 914   fi
 915
 916   if test "x${tentative_python_cflags}" != x; then
 917     AC_MSG_CHECKING(compiler flags for python code)
 918     for flag in ${tentative_python_cflags}; do
 919       # Check that the compiler accepts it
 920       saved_CFLAGS="$CFLAGS"
 921       CFLAGS="$CFLAGS $flag"
 922       AC_COMPILE_IFELSE(
 923         [AC_LANG_PROGRAM([], [])],
 924         [PYTHON_CFLAGS="${PYTHON_CFLAGS} $flag"],
 925         []
 926       )
 927       CFLAGS="$saved_CFLAGS"
 928     done
 929     AC_MSG_RESULT(${PYTHON_CFLAGS})
 930   fi
 931
 932   # On x64 Windows, Python's include headers, and pyconfig.h in
 933   # particular, rely on MS_WIN64 macro to detect that it's a 64bit
 934   # version of Windows.  Unfortunately, MS_WIN64 is only defined if
 935   # _MSC_VER, a Microsoft-specific macro, is defined.  So, when
 936   # building on x64 Windows with GCC, we define MS_WIN64 ourselves.
 937   # The issue was reported to the Python community, but still isn't
 938   # solved as of 2012-10-02 (http://bugs.python.org/issue4709).
 939
 940   case "$gdb_host" in
 941     mingw64)
 942            if test "${GCC}" = yes; then
 943              CPPFLAGS="$CPPFLAGS -DMS_WIN64"
 944            fi
 945            ;;
 946   esac
 947 else
 948   # Even if Python support is not compiled in, we need to have this file
 949   # included so that the "python" command, et.al., still exists.
 950   CONFIG_OBS="$CONFIG_OBS python/python.o"
 951   CONFIG_SRCS="$CONFIG_SRCS python/python.c"
 952 fi
 953
 954 # Work around Python http://bugs.python.org/issue10112.  See also
 955 # http://bugs.python.org/issue11410, otherwise -Wl,--dynamic-list has
 956 # no effect.  Note that the only test after this that uses Python is
 957 # the -rdynamic/-Wl,--dynamic-list test, and we do want that one to be
 958 # run without -export-dynamic too.
 959 PYTHON_LIBS=`echo $PYTHON_LIBS | sed -e 's/-Xlinker -export-dynamic//'`
 960
 961 AC_SUBST(PYTHON_CFLAGS)
 962 AC_SUBST(PYTHON_CPPFLAGS)
 963 AC_SUBST(PYTHON_LIBS)
 964 AM_CONDITIONAL(HAVE_PYTHON, test "${have_libpython}" != no)
 965
 966 # -------------------- #
 967 # Check for libguile.  #
 968 # -------------------- #
 969
 970 dnl Utility to simplify finding libguile.
 971 dnl $1 = pkg-config-program
 972 dnl $2 = space-separate list of guile versions to try
 973 dnl $3 = yes|no, indicating whether to flag errors or ignore them
 974 dnl $4 = the shell variable to assign the result to
 975 dnl      If libguile is found we store "yes" here.
 976
 977 AC_DEFUN([AC_TRY_LIBGUILE],
 978 [
 979   pkg_config=$1
 980   guile_version_list=$2
 981   flag_errors=$3
 982   define([have_libguile_var],$4)
 983   found_usable_guile=checking
 984   AC_MSG_CHECKING([for usable guile from ${pkg_config}])
 985   for guile_version in ${guile_version_list}; do
 986     ${pkg_config} --exists ${guile_version} 2>/dev/null
 987     if test $? != 0; then
 988       continue
 989     fi
 990     dnl pkg-config says the package exists, so if we get an error now,
 991     dnl that's bad.
 992     new_CPPFLAGS=`${pkg_config} --cflags ${guile_version}`
 993     if test $? != 0; then
 994       AC_MSG_ERROR([failure running pkg-config --cflags ${guile_version}])
 995     fi
 996     new_LIBS=`${pkg_config} --libs ${guile_version}`
 997     if test $? != 0; then
 998       AC_MSG_ERROR([failure running pkg-config --libs ${guile_version}])
 999     fi
1000     dnl If we get this far, great.
1001     found_usable_guile=${guile_version}
1002     break
1003   done
1004   if test "${found_usable_guile}" = "checking"; then
1005     if test "${flag_errors}" = "yes"; then
1006       AC_MSG_ERROR([unable to find usable guile version from "${guile_version_list}"])
1007     else
1008       found_usable_guile=no
1009     fi
1010   fi
1011   dnl One final sanity check.
1012   dnl The user could have said --with-guile=python-2.7.
1013   if test "${found_usable_guile}" != no; then
1014     save_CPPFLAGS=$CPPFLAGS
1015     save_LIBS=$LIBS
1016     CPPFLAGS="$CPPFLAGS $new_CPPFLAGS"
1017     LIBS="$LIBS $new_LIBS"
1018     AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include "libguile.h"]],
1019                                    [[scm_init_guile ();]])],
1020                    [have_libguile_var=yes
1021                     GUILE_CPPFLAGS=$new_CPPFLAGS
1022                     GUILE_LIBS=$new_LIBS],
1023                    [found_usable_guile=no])
1024     dnl scm_set_automatic_finalization_enabled added in Guile 2.2.
1025     AC_CHECK_FUNC(scm_set_automatic_finalization_enabled,
1026       AC_DEFINE(HAVE_GUILE_MANUAL_FINALIZATION, 1,
1027                 [Define if Guile supports manual finalization.])
1028     )
1029     CPPFLAGS=$save_CPPFLAGS
1030     LIBS=$save_LIBS
1031     if test "${found_usable_guile}" = no; then
1032       if test "${flag_errors}" = yes; then
1033         AC_MSG_FAILURE([linking guile version ${guile_version} test program failed])
1034       fi
1035     fi
1036   fi
1037   AC_MSG_RESULT([${found_usable_guile}])
1038 ])
1039
1040 dnl There are several different values for --with-guile:
1041 dnl
1042 dnl no -   Don't include guile support.
1043 dnl yes -  Include guile support, error if it's missing.
1044 dnl        The pkg-config program must be in $PATH.
1045 dnl auto - Same as "yes", but if guile is missing from the system,
1046 dnl        fall back to "no".
1047 dnl guile-version [guile-version-choice-2 ...] -
1048 dnl        A space-separated list of guile package versions to try.
1049 dnl        These are passed to pkg-config as-is.
1050 dnl        E.g., guile-2.0 or guile-2.2-uninstalled
1051 dnl        This requires making sure PKG_CONFIG_PATH is set appropriately.
1052 dnl /path/to/pkg-config -
1053 dnl        Use this pkg-config program.
1054 dnl        NOTE: This needn't be the "real" pkg-config program.
1055 dnl        It could be a shell script.  It is invoked as:
1056 dnl        pkg-config --exists $version
1057 dnl        pkg-config --cflags $version
1058 dnl        pkg-config --libs $version
1059 dnl        pkg-config --variable guild $version
1060 dnl        The script will be called with $version having each value in
1061 dnl        $try_guile_versions until --exists indicates success.
1062
1063 AC_ARG_WITH(guile,
1064   AS_HELP_STRING([--with-guile@<:@=GUILE@:>@], [include guile support (auto/yes/no/<guile-version>/<pkg-config-program>)]),
1065   [], [with_guile=auto])
1066 AC_MSG_CHECKING([whether to use guile])
1067 AC_MSG_RESULT([$with_guile])
1068
1069 dnl We check guile with pkg-config.
1070 AC_PATH_PROG(pkg_config_prog_path, pkg-config, missing)
1071
1072 try_guile_versions="guile-3.0 guile-2.2 guile-2.0"
1073 have_libguile=no
1074 case "${with_guile}" in
1075 no)
1076   AC_MSG_WARN([guile support disabled; some features will be unavailable.])
1077   ;;
1078 auto)
1079   if test "${pkg_config_prog_path}" = "missing"; then
1080     AC_MSG_WARN([pkg-config not found, guile support disabled])
1081   else
1082     AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${try_guile_versions}, no, have_libguile)
1083   fi
1084   ;;
1085 yes)
1086   if test "${pkg_config_prog_path}" = "missing"; then
1087     AC_MSG_ERROR([pkg-config not found])
1088   fi
1089   AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${try_guile_versions}, yes, have_libguile)
1090   ;;
1091 [[\\/]]* | ?:[[\\/]]*)
1092   if test -x "${with_guile}"; then
1093     AC_TRY_LIBGUILE(${with_guile}, ${try_guile_versions}, yes, have_libguile)
1094   else
1095     AC_MSG_ERROR([Guile config program not executable: ${with_guile}])
1096   fi
1097   ;;
1098 "" | */*)
1099   # Disallow --with=guile="" and --with-guile=foo/bar.
1100   AC_MSG_ERROR([invalid value for --with-guile])
1101   ;;
1102 *)
1103   # A space separate list of guile versions to try, in order.
1104   if test "${pkg_config_prog_path}" = "missing"; then
1105     AC_MSG_ERROR([pkg-config not found])
1106   fi
1107   AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${with_guile}, yes, have_libguile)
1108   ;;
1109 esac
1110
1111 if test "${have_libguile}" != no; then
1112   dnl Get the name of the 'guild' program.
1113   case "${with_guile}" in
1114   [[\\/]]* | ?:[[\\/]]*)
1115     GDB_GUILE_PROGRAM_NAMES(["${with_guile}"], ["${guile_version}"])
1116     ;;
1117   *)
1118     GDB_GUILE_PROGRAM_NAMES(["${pkg_config_prog_path}"], ["${guile_version}"])
1119     ;;
1120   esac
1121
1122   dnl Make sure guild can handle this host.
1123   GDB_TRY_GUILD([$srcdir/guile/lib/gdb/support.scm])
1124   dnl If not, disable guile support.
1125   if test "$ac_cv_guild_ok" = no; then
1126     have_libguile=no
1127     AC_MSG_WARN(disabling guile support, $GUILD fails compiling for $host)
1128   fi
1129 fi
1130
1131 if test "${have_libguile}" != no; then
1132   AC_DEFINE(HAVE_GUILE, 1, [Define if Guile interpreter is being linked in.])
1133   CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_GUILE_OBS)"
1134   CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_GUILE_DEPS)"
1135   CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_GUILE_SRCS)"
1136   CONFIG_INSTALL="$CONFIG_INSTALL install-guile"
1137   ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_GUILE_CFLAGS)"
1138
1139   dnl The 'scm_new_smob' function appeared in Guile 2.0.6.
1140   save_LIBS="$LIBS"
1141   save_CPPFLAGS="$CPPFLAGS"
1142   LIBS="$GUILE_LIBS"
1143   CPPFLAGS="$GUILE_CPPFLAGS"
1144   AC_CHECK_FUNCS([scm_new_smob])
1145   LIBS="$save_LIBS"
1146   CPPFLAGS="$save_CPPFLAGS"
1147 else
1148   # Even if Guile support is not compiled in, we need to have these files
1149   # included.
1150   CONFIG_OBS="$CONFIG_OBS guile/guile.o"
1151   CONFIG_SRCS="$CONFIG_SRCS guile/guile.c"
1152 fi
1153 AC_SUBST(GUILE_CPPFLAGS)
1154 AC_SUBST(GUILE_LIBS)
1155 AM_CONDITIONAL(HAVE_GUILE, test "${have_libguile}" != no)
1156
1157 # ---------------------------- #
1158 # Check for source highlight.  #
1159 # ---------------------------- #
1160
1161 SRCHIGH_LIBS=
1162 SRCHIGH_CFLAGS=
1163
1164 AC_ARG_ENABLE([source-highlight],
1165               [AS_HELP_STRING([--enable-source-highlight],
1166                               [enable source-highlight for source listings])],
1167               [GDB_CHECK_YES_NO_AUTO_VAL([$enableval], [--enable-source-highlight])],
1168               [enable_source_highlight=auto])
1169
1170 if test "${enable_source_highlight}" != "no"; then
1171   AC_MSG_CHECKING([for the source-highlight library])
1172   if test "${pkg_config_prog_path}" = "missing"; then
1173     AC_MSG_RESULT([no - pkg-config not found])
1174     if test "${enable_source_highlight}" = "yes"; then
1175       AC_MSG_ERROR([pkg-config was not found in your system])
1176     fi
1177   else
1178     if ${pkg_config_prog_path} --exists source-highlight; then
1179       case "$LDFLAGS" in
1180         *static-libstdc*)
1181           AC_MSG_ERROR([source highlight is incompatible with -static-libstdc++; dnl
1182 either use --disable-source-highlight or dnl
1183 --without-static-standard-libraries])
1184           ;;
1185       esac
1186
1187       srchigh_pkg_cflags=`${pkg_config_prog_path} --cflags source-highlight`
1188       srchigh_pkg_libs=`${pkg_config_prog_path} --libs source-highlight`
1189
1190       # Now that we have found a source-highlight library, check if we can use
1191       # it.  In particular, we're trying to detect the situation that the
1192       # library is using the new libstdc++ library abi ( see
1193       # https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html )
1194       # while the compiler being used to compile gdb is using the old abi.
1195       # Such a situation will result in an undefined reference to
1196       # srchilite::SourceHighlight::SourceHighlight(std::string const&).
1197       # This situation can occur for instance when using a source highlight
1198       # library compiled with g++ 7.5.0 while building gdb with g++ 4.8.5.
1199       AC_LANG_PUSH(C++)
1200       save_CXXFLAGS="$CXXFLAGS"
1201       save_LIBS="$LIBS"
1202       CXXFLAGS="$CXXFLAGS $srchigh_pkg_cflags"
1203       LIBS="$LIBS $srchigh_pkg_libs"
1204       AC_LINK_IFELSE(
1205         [AC_LANG_PROGRAM(
1206           [#include <srchilite/sourcehighlight.h>],
1207           [std::string outlang = "esc.outlang";
1208            new srchilite::SourceHighlight (outlang);]
1209         )],
1210         [have_usable_source_highlight=yes],
1211         [have_usable_source_highlight=no]
1212       )
1213       CXXFLAGS="$save_CXXFLAGS"
1214       LIBS="$save_LIBS"
1215       AC_LANG_POP(C++)
1216
1217       if test "${have_usable_source_highlight}" = "yes"; then
1218         AC_DEFINE([HAVE_SOURCE_HIGHLIGHT], 1,
1219                   [Define to 1 if the source-highlight library is available])
1220         AC_MSG_RESULT([yes])
1221         SRCHIGH_CFLAGS="$srchigh_pkg_cflags"
1222         SRCHIGH_LIBS="$srchigh_pkg_libs"
1223       else
1224         AC_MSG_RESULT([no])
1225         if test "${enable_source_highlight}" = "yes"; then
1226           AC_MSG_ERROR([source-highlight in your system could not be used])
1227         fi
1228       fi
1229     else
1230       AC_MSG_RESULT([no])
1231       if test "${enable_source_highlight}" = "yes"; then
1232         AC_MSG_ERROR([source-highlight was not found in your system])
1233       fi
1234     fi
1235   fi
1236 fi
1237 AC_SUBST(SRCHIGH_LIBS)
1238 AC_SUBST(SRCHIGH_CFLAGS)
1239
1240 # ------------------------- #
1241 # Checks for header files.  #
1242 # ------------------------- #
1243
1244 AC_HEADER_STDC
1245 # elf_hp.h is for HP/UX 64-bit shared library support.
1246 AC_CHECK_HEADERS([nlist.h machine/reg.h \
1247                   thread_db.h \
1248                   sys/file.h sys/filio.h sys/ioctl.h sys/param.h \
1249                   sys/procctl.h sys/resource.h sys/ptrace.h ptrace.h \
1250                   sys/reg.h sys/debugreg.h \
1251                   termios.h elf_hp.h])
1252 AC_CHECK_HEADERS(sys/user.h, [], [],
1253 [#if HAVE_SYS_PARAM_H
1254 # include <sys/param.h>
1255 #endif
1256 ])
1257
1258 AC_CHECK_HEADERS(curses.h cursesX.h ncurses.h ncursesw/ncurses.h ncurses/ncurses.h ncurses/term.h)
1259 AC_CHECK_HEADERS(term.h, [], [],
1260 [#if HAVE_CURSES_H
1261 # include <curses.h>
1262 #endif
1263 ])
1264
1265 AC_CHECK_HEADERS([sys/socket.h])
1266 AC_CHECK_HEADERS([ws2tcpip.h])
1267 AC_CHECK_HEADERS([execinfo.h])
1268
1269 # ------------------------- #
1270 # Checks for declarations.  #
1271 # ------------------------- #
1272
1273 libiberty_INIT
1274
1275 AC_CHECK_DECLS([snprintf])
1276 AM_LC_MESSAGES
1277
1278 # ------------------ #
1279 # Checks for types.  #
1280 # ------------------ #
1281
1282 AC_CHECK_TYPES(socklen_t, [], [],
1283 [#include <sys/types.h>
1284 #if HAVE_SYS_SOCKET_H
1285 # include <sys/socket.h>
1286 #elif HAVE_WS2TCPIP_H
1287 # include <ws2tcpip.h>
1288 #endif
1289 ])
1290
1291 # ------------------------------------- #
1292 # Checks for compiler characteristics.  #
1293 # ------------------------------------- #
1294
1295 AC_C_CONST
1296 AC_C_INLINE
1297 AC_C_BIGENDIAN
1298
1299 # ------------------------------ #
1300 # Checks for library functions.  #
1301 # ------------------------------ #
1302
1303 AC_CHECK_FUNCS([getuid getgid \
1304                 pipe pread pread64 pwrite resize_term \
1305                 getpgid setsid \
1306                 sigaction sigsetmask socketpair \
1307                 ttrace wborder wresize setlocale iconvlist libiconvlist btowc \
1308                 setrlimit getrlimit posix_madvise waitpid \
1309                 use_default_colors])
1310 AM_LANGINFO_CODESET
1311 GDB_AC_COMMON
1312
1313 # Check the return and argument types of ptrace.
1314 GDB_AC_PTRACE
1315
1316 dnl AC_FUNC_SETPGRP does not work when cross compiling
1317 dnl Instead, assume we will have a prototype for setpgrp if cross compiling.
1318 if test "$cross_compiling" = no; then
1319   AC_FUNC_SETPGRP
1320 else
1321   AC_CACHE_CHECK(
1322     [whether setpgrp takes no argument],
1323     [ac_cv_func_setpgrp_void],
1324     [AC_COMPILE_IFELSE(
1325        [AC_LANG_PROGRAM(
1326           [#include <unistd.h>],
1327           [if (setpgrp(1,1) == -1)
1328              exit (0);
1329            else
1330              exit (1);]
1331         )],
1332        [ac_cv_func_setpgrp_void=no],
1333        [ac_cv_func_setpgrp_void=yes]
1334      )]
1335   )
1336 if test "$ac_cv_func_setpgrp_void" = yes; then
1337   AC_DEFINE(SETPGRP_VOID, 1)
1338 fi
1339 fi
1340
1341 # Check if <sys/proc.h> defines `struct thread' with a td_pcb member.
1342 AC_CHECK_MEMBERS([struct thread.td_pcb], [], [],
1343 [#include <sys/param.h>
1344 #include <sys/proc.h>
1345 ])
1346
1347 # See if <sys/lwp.h> defines `struct lwp`.
1348 AC_CACHE_CHECK(
1349   [for struct lwp],
1350   [gdb_cv_struct_lwp],
1351   [AC_COMPILE_IFELSE(
1352      [AC_LANG_PROGRAM(
1353         [#include <sys/param.h>
1354          #define _KMEMUSER
1355          #include <sys/lwp.h>],
1356         [struct lwp l;]
1357       )],
1358      [gdb_cv_struct_lwp=yes],
1359      [gdb_cv_struct_lwp=no]
1360    )]
1361 )
1362 if test "$gdb_cv_struct_lwp" = yes; then
1363   AC_DEFINE(HAVE_STRUCT_LWP, 1,
1364             [Define to 1 if your system has struct lwp.])
1365 fi
1366
1367 # See if <machine/reg.h> degines `struct reg'.
1368 AC_CACHE_CHECK(
1369   [for struct reg in machine/reg.h],
1370   [gdb_cv_struct_reg],
1371   [AC_COMPILE_IFELSE(
1372      [AC_LANG_PROGRAM(
1373         [#include <sys/types.h>
1374          #include <machine/reg.h>],
1375         [struct reg r;]
1376       )],
1377      [gdb_cv_struct_reg=yes],
1378      [gdb_cv_struct_reg=no]
1379    )]
1380 )
1381 if test "$gdb_cv_struct_reg" = yes; then
1382   AC_DEFINE(HAVE_STRUCT_REG, 1,
1383             [Define to 1 if your system has struct reg in <machine/reg.h>.])
1384 fi
1385
1386 # See if <machine/reg.h> supports the %fs and %gs i386 segment registers.
1387 # Older i386 BSD's don't have the r_fs and r_gs members of `struct reg'.
1388 AC_CHECK_MEMBERS([struct reg.r_fs, struct reg.r_gs], [], [],
1389                  [#include <sys/types.h>
1390 #include <machine/reg.h>])
1391
1392 # See if <sys/ptrace.h> provides the PTRACE_GETREGS request.
1393 AC_MSG_CHECKING(for PTRACE_GETREGS)
1394 AC_CACHE_VAL(
1395   [gdb_cv_have_ptrace_getregs],
1396   [AC_COMPILE_IFELSE(
1397     [AC_LANG_PROGRAM([#include <sys/ptrace.h>], [PTRACE_GETREGS;])],
1398     [gdb_cv_have_ptrace_getregs=yes],
1399     [gdb_cv_have_ptrace_getregs=no]
1400    )]
1401 )
1402 AC_MSG_RESULT($gdb_cv_have_ptrace_getregs)
1403 if test "$gdb_cv_have_ptrace_getregs" = yes; then
1404   AC_DEFINE(HAVE_PTRACE_GETREGS, 1,
1405   [Define if sys/ptrace.h defines the PTRACE_GETREGS request.])
1406 fi
1407
1408 # See if <sys/ptrace.h> provides the PTRACE_GETFPXREGS request.
1409 AC_MSG_CHECKING(for PTRACE_GETFPXREGS)
1410 AC_CACHE_VAL(
1411   [gdb_cv_have_ptrace_getfpxregs],
1412   [AC_COMPILE_IFELSE(
1413      [AC_LANG_PROGRAM([#include <sys/ptrace.h>], [PTRACE_GETFPXREGS;])],
1414      [gdb_cv_have_ptrace_getfpxregs=yes],
1415      [gdb_cv_have_ptrace_getfpxregs=no]
1416    )]
1417 )
1418 AC_MSG_RESULT($gdb_cv_have_ptrace_getfpxregs)
1419 if test "$gdb_cv_have_ptrace_getfpxregs" = yes; then
1420   AC_DEFINE(HAVE_PTRACE_GETFPXREGS, 1,
1421   [Define if sys/ptrace.h defines the PTRACE_GETFPXREGS request.])
1422 fi
1423
1424 # See if <sys/ptrace.h> provides the PT_GETDBREGS request.
1425 AC_MSG_CHECKING(for PT_GETDBREGS)
1426 AC_CACHE_VAL(
1427   [gdb_cv_have_pt_getdbregs],
1428   [AC_COMPILE_IFELSE(
1429      [AC_LANG_PROGRAM(
1430         [#include <sys/types.h>
1431          #include <sys/ptrace.h>],
1432         [PT_GETDBREGS;]
1433       )],
1434      [gdb_cv_have_pt_getdbregs=yes],
1435      [gdb_cv_have_pt_getdbregs=no]
1436    )]
1437 )
1438 AC_MSG_RESULT($gdb_cv_have_pt_getdbregs)
1439 if test "$gdb_cv_have_pt_getdbregs" = yes; then
1440   AC_DEFINE(HAVE_PT_GETDBREGS, 1,
1441   [Define if sys/ptrace.h defines the PT_GETDBREGS request.])
1442 fi
1443
1444 # See if <sys/ptrace.h> supports LWP names on FreeBSD
1445 # Older FreeBSD versions don't have the pl_tdname member of
1446 # `struct ptrace_lwpinfo'.
1447 AC_CHECK_MEMBERS([struct ptrace_lwpinfo.pl_tdname], [], [],
1448                  [#include <sys/ptrace.h>])
1449
1450 # See if <sys/ptrace.h> supports syscall fields on FreeBSD.  The
1451 # pl_syscall_code member of `struct ptrace_lwpinfo' was added in
1452 # FreeBSD 10.3.
1453 AC_CHECK_MEMBERS([struct ptrace_lwpinfo.pl_syscall_code], [], [],
1454                  [#include <sys/ptrace.h>])
1455
1456 # Check if the compiler supports the `long long' type.
1457
1458 AC_CACHE_CHECK([for long long support in compiler], gdb_cv_c_long_long,
1459                [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1460 [[extern long long foo;]],
1461 [[switch (foo & 2) { case 0: return 1; }]])],
1462                                   gdb_cv_c_long_long=yes,
1463                                   gdb_cv_c_long_long=no)])
1464 if test "$gdb_cv_c_long_long" != yes; then
1465   # libdecnumber requires long long.
1466   AC_MSG_ERROR([Compiler must support long long for GDB.])
1467 fi
1468
1469 # Check if the compiler and runtime support printing decfloats.
1470
1471 AC_CACHE_CHECK([for decfloat support in printf],
1472                gdb_cv_printf_has_decfloat,
1473                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1474 [[char buf[64];
1475   _Decimal32 d32 = 1.2345df;
1476   _Decimal64 d64 = 1.2345dd;
1477   _Decimal128 d128 = 1.2345dl;
1478   sprintf (buf, "Decimal32: %H\nDecimal64: %D\nDecimal128: %DD", d32, d64, d128);
1479   return (strcmp ("Decimal32: 1.2345\nDecimal64: 1.2345\nDecimal128: 1.2345", buf));]])],
1480                               gdb_cv_printf_has_decfloat=yes,
1481                               gdb_cv_printf_has_decfloat=no,
1482                               gdb_cv_printf_has_decfloat=no)])
1483 if test "$gdb_cv_printf_has_decfloat" = yes; then
1484   AC_DEFINE(PRINTF_HAS_DECFLOAT, 1,
1485             [Define to 1 if the "%H, %D and %DD" formats work to print decfloats.])
1486 fi
1487
1488 # Check if the compiler supports the `long double' type.  We can't use
1489 # AC_C_LONG_DOUBLE because that one does additional checks on the
1490 # constants defined in <float.h> that fail on some systems,
1491 # e.g. FreeBSD/i386 4.7 and OpenBSD/i386 3.6.
1492
1493 AC_CACHE_CHECK([for long double support in compiler], gdb_cv_c_long_double,
1494                [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[long double foo;]])],
1495                                   gdb_cv_c_long_double=yes,
1496                                   gdb_cv_c_long_double=no)])
1497 if test "$gdb_cv_c_long_double" = yes; then
1498   AC_DEFINE(HAVE_LONG_DOUBLE, 1,
1499            [Define to 1 if the compiler supports long double.])
1500 fi
1501
1502 # Check if the compiler and runtime support printing long doubles.
1503
1504 AC_CACHE_CHECK([for long double support in printf],
1505                gdb_cv_printf_has_long_double,
1506                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1507 [[char buf[16];
1508   long double f = 3.141592653;
1509   sprintf (buf, "%Lg", f);
1510   return (strncmp ("3.14159", buf, 7));]])],
1511                               gdb_cv_printf_has_long_double=yes,
1512                               gdb_cv_printf_has_long_double=no,
1513                               gdb_cv_printf_has_long_double=no)])
1514 if test "$gdb_cv_printf_has_long_double" = yes; then
1515   AC_DEFINE(PRINTF_HAS_LONG_DOUBLE, 1,
1516             [Define to 1 if the "%Lg" format works to print long doubles.])
1517 fi
1518
1519 # Check if the compiler and runtime support scanning long doubles.
1520
1521 AC_CACHE_CHECK([for long double support in scanf],
1522                gdb_cv_scanf_has_long_double,
1523                [AC_RUN_IFELSE([AC_LANG_PROGRAM(
1524 [[#include <stdio.h>]],
1525 [[char *buf = "3.141592653";
1526   long double f = 0;
1527   sscanf (buf, "%Lg", &f);
1528   return !(f > 3.14159 && f < 3.14160);]])],
1529                               gdb_cv_scanf_has_long_double=yes,
1530                               gdb_cv_scanf_has_long_double=no,
1531                               gdb_cv_scanf_has_long_double=no)])
1532 if test "$gdb_cv_scanf_has_long_double" = yes; then
1533   AC_DEFINE(SCANF_HAS_LONG_DOUBLE, 1,
1534             [Define to 1 if the "%Lg" format works to scan long doubles.])
1535 fi
1536
1537 case ${host_os} in
1538 aix*)
1539   AC_CACHE_CHECK(
1540     [for -bbigtoc option], [gdb_cv_bigtoc],
1541     [SAVE_LDFLAGS=$LDFLAGS
1542
1543      case $GCC in
1544        yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
1545        *) gdb_cv_bigtoc=-bbigtoc ;;
1546      esac
1547
1548      LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
1549      AC_LINK_IFELSE(
1550        [AC_LANG_PROGRAM([], [int i;])],
1551        [],
1552        [gdb_cv_bigtoc=]
1553      )
1554      LDFLAGS="${SAVE_LDFLAGS}"]
1555   )
1556   CONFIG_LDFLAGS="${CONFIG_LDFLAGS} ${gdb_cv_bigtoc}"
1557   ;;
1558 esac
1559
1560 AC_MSG_CHECKING(for the dynamic export flag)
1561 dynamic_list=false
1562 if test "${gdb_native}" = yes; then
1563    # The dynamically loaded libthread_db needs access to symbols in the gdb
1564    # executable.  Older GNU ld supports --export-dynamic but --dynamic-list
1565    # may not be supported there.
1566    old_LDFLAGS="$LDFLAGS"
1567    # Older GNU ld supports --export-dynamic but --dynamic-list it does not.
1568    RDYNAMIC="-Wl,--dynamic-list=${srcdir}/proc-service.list"
1569    LDFLAGS="$LDFLAGS $RDYNAMIC"
1570    if test "${have_libpython}" = no; then
1571      AC_LINK_IFELSE(
1572        [AC_LANG_PROGRAM([], [])],
1573        [dynamic_list=true],
1574        []
1575      )
1576    else
1577      # Workaround http://bugs.python.org/issue4434 where static
1578      # libpythonX.Y.a would get its symbols required for
1579      # pythonX.Y/lib-dynload/*.so modules hidden by -Wl,--dynamic-list.
1580      # Problem does not happen for the recommended libpythonX.Y.so linkage.
1581
1582      # Note the workaround for Python
1583      # http://bugs.python.org/issue10112 earlier has removed
1584      # -export-dynamic from PYTHON_LIBS.  That's exactly what we want
1585      # here too, as otherwise it'd make this -Wl,--dynamic-list test
1586      # always pass.
1587      old_CFLAGS="$CFLAGS"
1588      CFLAGS="$CFLAGS $PYTHON_CFLAGS"
1589      old_LIBS="$LIBS"
1590      LIBS="$LIBS $PYTHON_LIBS"
1591      old_CPPFLAGS="$CPPFLAGS"
1592      CPPFLAGS="$CPPFLAGS $PYTHON_CPPFLAGS"
1593      AC_RUN_IFELSE(
1594        [AC_LANG_PROGRAM(
1595          [#include "Python.h"],
1596          [int err;
1597           Py_Initialize ();
1598           err = PyRun_SimpleString ("import ctypes\n");
1599           Py_Finalize ();
1600           return err == 0 ? 0 : 1;])],
1601        [dynamic_list=true], [], [true])
1602      LIBS="$old_LIBS"
1603      CFLAGS="$old_CFLAGS"
1604      CPPFLAGS="$old_CPPFLAGS"
1605    fi
1606    LDFLAGS="$old_LDFLAGS"
1607 fi
1608 if $dynamic_list; then
1609   found="-Wl,--dynamic-list"
1610   RDYNAMIC='-Wl,--dynamic-list=$(srcdir)/proc-service.list'
1611 else
1612   found="-rdynamic"
1613   RDYNAMIC="-rdynamic"
1614 fi
1615 AC_SUBST(RDYNAMIC)
1616 AC_MSG_RESULT($found)
1617
1618 AC_CACHE_CHECK(
1619   [whether execinfo.h backtrace is available],
1620   gdb_cv_execinfo_backtrace,
1621   [AC_LINK_IFELSE(
1622      [AC_LANG_PROGRAM(
1623         [
1624          #include <execinfo.h>
1625         ],
1626         [
1627          int f;
1628          void *b[[2]];
1629          f = backtrace (b, 2);
1630          backtrace_symbols_fd (b, f, 2);
1631         ])],
1632    [gdb_cv_execinfo_backtrace=yes],
1633    [gdb_cv_execinfo_backtrace=no])])
1634 if test "$gdb_cv_execinfo_backtrace" = yes; then
1635   AC_DEFINE(HAVE_EXECINFO_BACKTRACE, 1,
1636             [Define to 1 if execinfo.h backtrace functions are available.])
1637 fi
1638
1639 dnl For certain native configurations, we need to check whether thread
1640 dnl support can be built in or not.
1641 dnl
1642 dnl Note that we only want this if we are both native (host == target),
1643 dnl and not doing a canadian cross build (build == host).
1644
1645 if test "${build}" = "${host}" -a "${host}" = "${target}" ; then
1646    case ${host_os} in
1647    aix*)
1648       AC_MSG_CHECKING(for AiX thread debugging library)
1649       AC_CACHE_VAL(
1650         [gdb_cv_have_aix_thread_debug],
1651         [AC_COMPILE_IFELSE(
1652            [AC_LANG_PROGRAM(
1653               [#include <sys/pthdebug.h>],
1654               [#ifndef PTHDB_VERSION_3
1655                #error
1656                #endif]
1657             )],
1658            [gdb_cv_have_aix_thread_debug=yes],
1659            [gdb_cv_have_aix_thread_debug=no]
1660          )]
1661       )
1662       AC_MSG_RESULT($gdb_cv_have_aix_thread_debug)
1663       if test "$gdb_cv_have_aix_thread_debug" = yes; then
1664          CONFIG_SRCS="${CONFIG_SRCS} aix-thread.c"
1665          CONFIG_OBS="${CONFIG_OBS} aix-thread.o"
1666          LIBS="$LIBS -lpthdebug"
1667
1668          # Older versions of AIX do not provide the declaration for
1669          # the getthrds function (it appears that it was introduced
1670          # with AIX 6.x).
1671          AC_CHECK_DECLS(getthrds, [], [], [[#include <procinfo.h>]])
1672       fi
1673       ;;
1674    esac
1675    AC_SUBST(CONFIG_LDFLAGS)
1676 fi
1677
1678 dnl See if we have a thread_db header file that has TD_NOTALLOC and
1679 dnl other error codes.
1680 if test "x$ac_cv_header_thread_db_h" = "xyes"; then
1681   AC_CACHE_CHECK(
1682     [whether <thread_db.h> has TD_NOTALLOC],
1683     [gdb_cv_thread_db_h_has_td_notalloc],
1684     [AC_COMPILE_IFELSE(
1685        [AC_LANG_PROGRAM(
1686           [#include <thread_db.h>],
1687           [int i = TD_NOTALLOC;]
1688         )],
1689        [gdb_cv_thread_db_h_has_td_notalloc=yes],
1690        [gdb_cv_thread_db_h_has_td_notalloc=no]
1691      )]
1692   )
1693
1694   AC_CACHE_CHECK(
1695     [whether <thread_db.h> has TD_VERSION],
1696     [gdb_cv_thread_db_h_has_td_version],
1697     [AC_COMPILE_IFELSE(
1698        [AC_LANG_PROGRAM(
1699           [#include <thread_db.h>],
1700           [int i = TD_VERSION;]
1701         )],
1702        [gdb_cv_thread_db_h_has_td_version=yes],
1703        [gdb_cv_thread_db_h_has_td_version=no]
1704      )]
1705   )
1706
1707   AC_CACHE_CHECK(
1708     [whether <thread_db.h> has TD_NOTLS],
1709     [gdb_cv_thread_db_h_has_td_notls],
1710     [AC_COMPILE_IFELSE(
1711        [AC_LANG_PROGRAM(
1712           [#include <thread_db.h>],
1713           [int i = TD_NOTLS;]
1714         )],
1715        [gdb_cv_thread_db_h_has_td_notls=yes],
1716        [gdb_cv_thread_db_h_has_td_notls=no]
1717      )]
1718   )
1719 fi
1720 if test "x$gdb_cv_thread_db_h_has_td_notalloc" = "xyes"; then
1721   AC_DEFINE(THREAD_DB_HAS_TD_NOTALLOC, 1,
1722             [Define if <thread_db.h> has the TD_NOTALLOC error code.])
1723 fi
1724 if test "x$gdb_cv_thread_db_h_has_td_version" = "xyes"; then
1725   AC_DEFINE(THREAD_DB_HAS_TD_VERSION, 1,
1726             [Define if <thread_db.h> has the TD_VERSION error code.])
1727 fi
1728 if test "x$gdb_cv_thread_db_h_has_td_notls" = "xyes"; then
1729   AC_DEFINE(THREAD_DB_HAS_TD_NOTLS, 1,
1730             [Define if <thread_db.h> has the TD_NOTLS error code.])
1731 fi
1732
1733 dnl Set the host's .gdbinit filename.
1734 case $host_os in
1735   go32* | *djgpp*)
1736     gdbinit=gdb.ini
1737     ;;
1738   *)
1739     gdbinit=.gdbinit
1740     ;;
1741 esac
1742 AC_DEFINE_UNQUOTED(GDBINIT,"$gdbinit",[The .gdbinit filename.])
1743
1744 dnl Set the host's .gdbearlyinit filename
1745 AC_DEFINE_UNQUOTED(GDBEARLYINIT,".gdbearlyinit",[The .gdbearlyinit filename.])
1746
1747 dnl Handle optional features that can be enabled.
1748
1749 # Support for --with-sysroot is a copy of GDB_AC_WITH_DIR,
1750 # except that the argument to --with-sysroot is optional.
1751 # --with-sysroot (or --with-sysroot=yes) sets the default sysroot path.
1752 if test "x$with_sysroot" = xyes; then
1753   with_sysroot="${exec_prefix}/${target_alias}/sys-root"
1754 fi
1755 AC_ARG_WITH(sysroot,
1756   AS_HELP_STRING([--with-sysroot@<:@=DIR@:>@],
1757                  [search for usr/lib et al within DIR]),
1758   [TARGET_SYSTEM_ROOT=$withval], [TARGET_SYSTEM_ROOT=])
1759 AC_DEFINE_DIR(TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT,
1760               [search for usr/lib et al within DIR])
1761 AC_SUBST(TARGET_SYSTEM_ROOT)
1762 GDB_AC_DEFINE_RELOCATABLE(TARGET_SYSTEM_ROOT, sysroot, ${ac_define_dir})
1763
1764 GDB_AC_WITH_DIR(SYSTEM_GDBINIT, system-gdbinit,
1765     [automatically load a system-wide gdbinit file],
1766     [])
1767 GDB_AC_WITH_DIR(SYSTEM_GDBINIT_DIR, system-gdbinit-dir,
1768     [automatically load system-wide gdbinit files from this directory],
1769     [])
1770
1771 AM_GDB_COMPILER_TYPE
1772 AM_GDB_WARNINGS
1773 AM_GDB_UBSAN
1774
1775 # In the Cygwin environment, we need some additional flags.
1776 AC_CACHE_CHECK([for cygwin], gdb_cv_os_cygwin,
1777 [AC_EGREP_CPP(^lose$, [
1778 #if defined (__CYGWIN__) || defined (__CYGWIN32__)
1779 lose
1780 #endif],[gdb_cv_os_cygwin=yes],[gdb_cv_os_cygwin=no])])
1781
1782
1783 dnl Figure out which of the many generic ser-*.c files the _host_ supports.
1784 SER_HARDWIRE="ser-base.o ser-unix.o ser-pipe.o ser-tcp.o"
1785 case ${host} in
1786   *go32* ) SER_HARDWIRE=ser-go32.o ;;
1787   *djgpp* ) SER_HARDWIRE=ser-go32.o ;;
1788   *mingw32*) SER_HARDWIRE="ser-base.o ser-tcp.o ser-mingw.o" ;;
1789   *) SER_HARDWIRE="$SER_HARDWIRE ser-uds.o" ;;
1790 esac
1791 AC_SUBST(SER_HARDWIRE)
1792
1793 # libreadline needs libuser32.a in a cygwin environment
1794 WIN32LIBS=
1795 if test x"$gdb_cv_os_cygwin" = xyes; then
1796     WIN32LIBS="-luser32"
1797     case "${target}" in
1798         *cygwin*) WIN32LIBS="$WIN32LIBS -limagehlp"
1799         ;;
1800     esac
1801 fi
1802
1803 # The ser-tcp.c module requires sockets.
1804 # Note that WIN32APILIBS is set by GDB_AC_COMMON.
1805 WIN32LIBS="$WIN32LIBS $WIN32APILIBS"
1806
1807 # Add ELF support to GDB, but only if BFD includes ELF support.
1808 GDB_AC_CHECK_BFD([for ELF support in BFD], gdb_cv_var_elf,
1809                  [bfd_get_elf_phdr_upper_bound (NULL)], elf-bfd.h)
1810 if test "$gdb_cv_var_elf" = yes; then
1811   CONFIG_OBS="$CONFIG_OBS elfread.o stap-probe.o dtrace-probe.o \
1812                 gcore-elf.o elf-none-tdep.o"
1813   AC_DEFINE(HAVE_ELF, 1,
1814             [Define if ELF support should be included.])
1815   # -ldl is provided by bfd/Makfile.am (LIBDL) <PLUGINS>.
1816   if test "$plugins" = "yes"; then
1817     AC_SEARCH_LIBS(dlopen, dl)
1818   fi
1819 fi
1820
1821 # Add macho support to GDB, but only if BFD includes it.
1822 GDB_AC_CHECK_BFD([for Mach-O support in BFD], gdb_cv_var_macho,
1823                  [bfd_mach_o_lookup_command (NULL, 0, NULL)], mach-o.h)
1824 if test "$gdb_cv_var_macho" = yes; then
1825   CONFIG_OBS="$CONFIG_OBS machoread.o"
1826 fi
1827
1828 # Add any host-specific objects to GDB.
1829 CONFIG_OBS="${CONFIG_OBS} ${gdb_host_obs}"
1830
1831 # If building on ELF, look for lzma support for embedded compressed debug info.
1832 if test "$gdb_cv_var_elf" = yes; then
1833   AC_ARG_WITH(lzma,
1834     AS_HELP_STRING([--with-lzma], [support lzma compression (auto/yes/no)]),
1835     [], [with_lzma=auto])
1836   AC_MSG_CHECKING([whether to use lzma])
1837   AC_MSG_RESULT([$with_lzma])
1838
1839   if test "${with_lzma}" != no; then
1840     AC_LIB_HAVE_LINKFLAGS([lzma], [], [#include "lzma.h"],
1841                           [lzma_index_iter iter;
1842                            lzma_index_iter_init (&iter, 0);
1843                            lzma_mf_is_supported (LZMA_MF_HC3);])
1844     if test "$HAVE_LIBLZMA" != yes; then
1845       if test "$with_lzma" = yes; then
1846         AC_MSG_ERROR([missing liblzma for --with-lzma])
1847       fi
1848     fi
1849   fi
1850 fi
1851
1852 LIBGUI="../libgui/src/libgui.a"
1853 GUI_CFLAGS_X="-I${srcdir}/../libgui/src"
1854 AC_SUBST(LIBGUI)
1855 AC_SUBST(GUI_CFLAGS_X)
1856
1857 WIN32LDAPP=
1858 AC_SUBST(WIN32LIBS)
1859 AC_SUBST(WIN32LDAPP)
1860
1861 case "${host}" in
1862 *-*-cygwin* | *-*-mingw* )
1863     configdir="win"
1864     ;;
1865 *)
1866     configdir="unix"
1867     ;;
1868 esac
1869
1870 GDBTKLIBS=
1871 if test "${enable_gdbtk}" = "yes"; then
1872
1873     # Gdbtk must have an absolute path to srcdir in order to run
1874     # properly when not installed.
1875     here=`pwd`
1876     cd ${srcdir}
1877     GDBTK_SRC_DIR=`pwd`
1878     cd $here
1879
1880     SC_PATH_TCLCONFIG
1881
1882     # If $no_tk is nonempty, then we can't do Tk, and there is no
1883     # point to doing Tcl.
1884     SC_PATH_TKCONFIG
1885
1886     if test -z "${no_tcl}" -a -z "${no_tk}"; then
1887         SC_LOAD_TCLCONFIG
1888
1889         # Check for in-tree tcl
1890         here=`pwd`
1891         cd ${srcdir}/..
1892         topdir=`pwd`
1893         cd ${here}
1894
1895         intree="no"
1896         if test "${TCL_SRC_DIR}" = "${topdir}/tcl"; then
1897           intree="yes"
1898         fi
1899
1900         # Find Tcl private headers
1901         if test x"${intree}" = xno; then
1902           CY_AC_TCL_PRIVATE_HEADERS
1903           TCL_INCLUDE="${TCL_INCLUDE_SPEC} ${TCL_PRIVATE_INCLUDE}"
1904           TCL_LIBRARY="${TCL_LIB_SPEC}"
1905           TCL_DEPS=""
1906         else
1907           # If building tcl in the same src tree, private headers
1908           # are not needed, but we need to be sure to use the right
1909           # headers library
1910           TCL_INCLUDE="-I${TCL_SRC_DIR}/generic"
1911           TCL_LIBRARY="${TCL_BUILD_LIB_SPEC}"
1912           TCL_DEPS="../tcl/${configdir}${TCL_LIB_FILE}"
1913         fi
1914         AC_SUBST(TCL_INCLUDE)
1915         AC_SUBST(TCL_LIBRARY)
1916         AC_SUBST(TCL_DEPS)
1917
1918         SC_LOAD_TKCONFIG
1919
1920         # Check for in-tree Tk
1921         intree="no"
1922         if test "${TK_SRC_DIR}" = "${topdir}/tk"; then
1923           intree="yes"
1924         fi
1925
1926         # Find Tk private headers
1927         if test x"${intree}" = xno; then
1928           CY_AC_TK_PRIVATE_HEADERS
1929           TK_INCLUDE="${TK_INCLUDE_SPEC} ${TK_PRIVATE_INCLUDE}"
1930           TK_LIBRARY=${TK_LIB_SPEC}
1931           TK_DEPS=""
1932         else
1933           TK_INCLUDE="-I${TK_SRC_DIR}/generic"
1934           TK_LIBRARY="${TK_BUILD_LIB_SPEC}"
1935           TK_DEPS="../tk/${configdir}/${TK_LIB_FILE}"
1936         fi
1937         AC_SUBST(TK_INCLUDE)
1938         AC_SUBST(TK_LIBRARY)
1939         AC_SUBST(TK_DEPS)
1940         AC_SUBST(TK_XINCLUDES)
1941
1942         ENABLE_CFLAGS="${ENABLE_CFLAGS} \$(SUBDIR_GDBTK_CFLAGS)"
1943
1944         # Include some libraries that Tcl and Tk want.
1945         TCL_LIBS='$(LIBGUI) $(TK) $(TCL) $(X11_LDFLAGS) $(X11_LIBS)'
1946         # Yes, the ordering seems wrong here.  But it isn't.
1947         # TK_LIBS is the list of libraries that need to be linked
1948         # after Tcl/Tk.  Note that this isn't put into LIBS.  If it
1949         # were in LIBS then any link tests after this point would
1950         # try to include things like `$(LIBGUI)', which wouldn't work.
1951         GDBTKLIBS="${TCL_LIBS} ${TK_LIBS}"
1952
1953         CONFIG_OBS="${CONFIG_OBS} \$(SUBDIR_GDBTK_OBS)"
1954         CONFIG_DEPS="${CONFIG_DEPS} \$(SUBDIR_GDBTK_DEPS)"
1955         CONFIG_SRCS="${CONFIG_SRCS} \$(SUBDIR_GDBTK_SRCS)"
1956         CONFIG_ALL="${CONFIG_ALL} all-gdbtk"
1957         CONFIG_CLEAN="${CONFIG_CLEAN} clean-gdbtk"
1958         CONFIG_INSTALL="${CONFIG_INSTALL} install-gdbtk"
1959         CONFIG_UNINSTALL="${CONFIG_UNINSTALL} uninstall-gdbtk"
1960
1961         if test x"$gdb_cv_os_cygwin" = xyes; then
1962           WIN32LIBS="${WIN32LIBS} -lshell32 -lgdi32 -lcomdlg32 -ladvapi32"
1963           WIN32LDAPP="-Wl,--subsystem,console"
1964           CONFIG_OBS="${CONFIG_OBS} gdbres.o"
1965         fi
1966
1967         AC_CONFIG_SUBDIRS(gdbtk)
1968     fi
1969 fi
1970
1971 AC_SUBST(X_CFLAGS)
1972 AC_SUBST(X_LDFLAGS)
1973 AC_SUBST(X_LIBS)
1974 AC_SUBST(GDBTKLIBS)
1975 AC_SUBST(GDBTK_CFLAGS)
1976 AC_SUBST(GDBTK_SRC_DIR)
1977
1978 AC_PATH_X
1979
1980 # Unlike the sim directory, whether a simulator is linked is controlled by
1981 # presence of a gdb_sim definition in the target configure.tgt entry.
1982 # This code just checks for a few cases where we'd like to ignore those
1983 # definitions, even when they're present in the '.mt' file.  These cases
1984 # are when --disable-sim is specified, or if the simulator directory is
1985 # not part of the source tree.
1986 #
1987 AC_ARG_ENABLE(sim,
1988 AS_HELP_STRING([--enable-sim], [link gdb with simulator]),
1989 [echo "enable_sim = $enable_sim";
1990  echo "enableval = ${enableval}";
1991  case "${enableval}" in
1992   yes) ignore_sim=false ;;
1993   no)  ignore_sim=true ;;
1994   *)   ignore_sim=false ;;
1995  esac],
1996 [ignore_sim=false])
1997
1998 if test ! -d "${srcdir}/../sim"; then
1999   ignore_sim=true
2000 fi
2001
2002 SIM=
2003 SIM_OBS=
2004 if test "${ignore_sim}" = "false"; then
2005   if test x"${gdb_sim}" != x ; then
2006     SIM="${gdb_sim}"
2007     SIM_OBS="remote-sim.o"
2008
2009     # Some tdep code should only be compiled in when the ppc sim is
2010     # built.  PR sim/13418.
2011     case $target in
2012       powerpc*-*-*)
2013         AC_DEFINE(WITH_PPC_SIM, 1, [Define if the PPC simulator is being linked in.])
2014         ;;
2015     esac
2016   fi
2017 fi
2018 AC_SUBST(SIM)
2019 AC_SUBST(SIM_OBS)
2020
2021 AC_SUBST(ENABLE_CFLAGS)
2022 AC_SUBST(PROFILE_CFLAGS)
2023
2024 AC_SUBST(CONFIG_OBS)
2025 AC_SUBST(CONFIG_DEPS)
2026 AC_SUBST(CONFIG_SRCS)
2027 AC_SUBST(CONFIG_ALL)
2028 AC_SUBST(CONFIG_CLEAN)
2029 AC_SUBST(CONFIG_INSTALL)
2030 AC_SUBST(CONFIG_UNINSTALL)
2031
2032 # List of host floatformats.
2033 AC_DEFINE_UNQUOTED(GDB_HOST_FLOAT_FORMAT,$gdb_host_float_format,[Host float floatformat])
2034 AC_DEFINE_UNQUOTED(GDB_HOST_DOUBLE_FORMAT,$gdb_host_double_format,[Host double floatformat])
2035 AC_DEFINE_UNQUOTED(GDB_HOST_LONG_DOUBLE_FORMAT,$gdb_host_long_double_format,[Host long double floatformat])
2036
2037 # target_subdir is used by the testsuite to find the target libraries.
2038 target_subdir=
2039 if test "${host}" != "${target}"; then
2040     target_subdir="${target_alias}/"
2041 fi
2042 AC_SUBST(target_subdir)
2043
2044 # Import nat definitions.
2045 nat_makefile_frag=/dev/null
2046 if test "${gdb_native}" = "yes"; then
2047   . ${srcdir}/configure.nat
2048   nativefile=$NAT_FILE
2049 fi
2050
2051 AC_SUBST(NAT_FILE)
2052 AC_SUBST(NATDEPFILES)
2053 AC_SUBST(NAT_CDEPS)
2054 AC_SUBST(LOADLIBES)
2055 AC_SUBST(MH_CFLAGS)
2056 AC_SUBST(XM_CLIBS)
2057 AC_SUBST(NAT_GENERATED_FILES)
2058 AC_SUBST(HAVE_NATIVE_GCORE_HOST)
2059 AC_SUBST_FILE(nat_makefile_frag)
2060
2061 if test x"${gdb_osabi}" != x ; then
2062     AC_DEFINE_UNQUOTED(GDB_OSABI_DEFAULT, $gdb_osabi,
2063                        [Define to the default OS ABI for this configuration.])
2064 fi
2065
2066 # Setup possible use of libbacktrace.
2067 AC_ARG_ENABLE([libbacktrace],
2068               [AS_HELP_STRING([--enable-libbacktrace],
2069                               [use libbacktrace to write a backtrace after a fatal signal.])],
2070               [GDB_CHECK_YES_NO_VAL([$enableval], [--enable-libbacktrace])],
2071               [enable_libbacktrace=yes])
2072
2073 if test "${enable_libbacktrace}" = "yes"; then
2074   LIBBACKTRACE_INC="-I$srcdir/../libbacktrace/ -I../libbacktrace/"
2075   LIBBACKTRACE_LIB=../libbacktrace/libbacktrace.la
2076   AC_DEFINE(HAVE_LIBBACKTRACE, 1, [Define if libbacktrace is being used.])
2077 else
2078   LIBBACKTRACE_INC=
2079   LIBBACKTRACE_LIB=
2080 fi
2081
2082 AC_SUBST(LIBBACKTRACE_INC)
2083 AC_SUBST(LIBBACKTRACE_LIB)
2084
2085 # Check for babeltrace and babeltrace-ctf
2086 AC_ARG_WITH(babeltrace,
2087   AS_HELP_STRING([--with-babeltrace], [include babeltrace support (auto/yes/no)]),
2088   [], [with_babeltrace=auto])
2089 AC_MSG_CHECKING([whether to use babeltrace])
2090 AC_MSG_RESULT([$with_babeltrace])
2091
2092 if test "x$with_babeltrace" = "xno"; then
2093   AC_MSG_WARN([babletrace support disabled; GDB is unable to read CTF data.])
2094 else
2095   # Append -Werror to CFLAGS so that configure can catch the warning
2096   # "assignment from incompatible pointer type", which is related to
2097   # the babeltrace change from 1.0.3 to 1.1.0.  Babeltrace 1.1.0 works
2098   # in GDB, while babeltrace 1.0.3 is broken.
2099   # AC_LIB_HAVE_LINKFLAGS may modify CPPFLAGS in it, so it should be
2100   # safe to save and restore CFLAGS here.
2101   saved_CFLAGS=$CFLAGS
2102   CFLAGS="$CFLAGS -Werror"
2103   AC_LIB_HAVE_LINKFLAGS([babeltrace], [babeltrace-ctf],
2104                         [#include <babeltrace/babeltrace.h>
2105                          #include <babeltrace/ctf/events.h>
2106                          #include <babeltrace/ctf/iterator.h>],
2107                         [struct bt_iter_pos *pos = bt_iter_get_pos (bt_ctf_get_iter (NULL));
2108                         struct bt_ctf_event *event = NULL;
2109                         const struct bt_definition *scope;
2110
2111                         pos->type = BT_SEEK_BEGIN;
2112                         bt_iter_set_pos (bt_ctf_get_iter (NULL), pos);
2113                         scope = bt_ctf_get_top_level_scope (event,
2114                                                            BT_STREAM_EVENT_HEADER);
2115                         bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id"));
2116                         ])
2117   CFLAGS=$saved_CFLAGS
2118
2119   if test "$HAVE_LIBBABELTRACE" != yes; then
2120      if test "$with_babeltrace" = yes; then
2121        AC_MSG_ERROR([babeltrace is missing or unusable])
2122      else
2123        AC_MSG_WARN([babeltrace is missing or unusable; GDB is unable to read CTF data.])
2124      fi
2125   fi
2126 fi
2127
2128 # Check for xxhash
2129 AC_ARG_WITH(xxhash,
2130   AS_HELP_STRING([--with-xxhash], [use libxxhash for hashing (faster) (auto/yes/no)]),
2131   [], [with_xxhash=auto])
2132
2133 GCC_ENABLE([libctf], [yes], [], [Handle .ctf type-info sections])
2134 if test "${enable_libctf}" = yes; then
2135   AC_DEFINE(ENABLE_LIBCTF, 1, [Handle .ctf type-info sections])
2136   LIBCTF="../libctf/libctf.la"
2137   CTF_DEPS="../libctf/libctf.la"
2138 else
2139   LIBCTF=
2140   CTF_DEPS=
2141 fi
2142 AC_SUBST(LIBCTF)
2143 AC_SUBST(CTF_DEPS)
2144
2145 # If nativefile (NAT_FILE) is not set in configure.nat, we link to an
2146 # empty version.
2147
2148 if test "x$with_xxhash" != "xno"; then
2149   AC_LIB_HAVE_LINKFLAGS([xxhash], [],
2150                         [#include <xxhash.h>],
2151                         [XXH32("foo", 3, 0);
2152                         ])
2153   if test "$HAVE_LIBXXHASH" != yes; then
2154     if test "$with_xxhash" = yes; then
2155       AC_MSG_ERROR([xxhash is missing or unusable])
2156     fi
2157   fi
2158   if test "x$with_xxhash" = "xauto"; then
2159     with_xxhash="$HAVE_LIBXXHASH"
2160   fi
2161 fi
2162
2163 AC_MSG_CHECKING([whether to use xxhash])
2164 AC_MSG_RESULT([$with_xxhash])
2165
2166 NM_H=
2167 rm -f nm.h
2168 if test "${nativefile}" != ""; then
2169     case "${nativefile}" in
2170       nm-*.h ) GDB_NM_FILE="config/${gdb_host_cpu}/${nativefile}" ;;
2171       * ) GDB_NM_FILE="${nativefile}"
2172     esac
2173     AC_CONFIG_LINKS([nm.h:$GDB_NM_FILE], [echo > stamp-nmh],
2174                     [GDB_NM_FILE=$GDB_NM_FILE])
2175     AC_DEFINE_UNQUOTED(GDB_NM_FILE, "${GDB_NM_FILE}", [nativefile])
2176     NM_H=nm.h
2177 fi
2178 AC_SUBST(GDB_NM_FILE)
2179 AC_SUBST(NM_H)
2180
2181 dnl Add dependency for xsltproc if building with maintainer-mode enabled.
2182 AC_PATH_PROGS(XSLTPROC, xsltproc, missing)
2183 if test "x$USE_MAINTAINER_MODE" = xyes; then
2184   if test "${XSLTPROC}" = missing; then
2185     AC_MSG_ERROR(unable to find xsltproc.  maintainer-mode requires xsltproc.)
2186   fi
2187 fi
2188 AC_SUBST(XSLTPROC)
2189
2190 dnl Check for exe extension set on certain hosts (e.g. Win32)
2191 AC_EXEEXT
2192
2193 dnl  Detect the character set used by this host.
2194 dnl  At the moment, we just assume it's UTF-8.
2195 AC_DEFINE(GDB_DEFAULT_HOST_CHARSET, "UTF-8",
2196           [Define to be a string naming the default host character set.])
2197
2198 GDB_AC_SELFTEST([
2199   CONFIG_OBS="$CONFIG_OBS \$(SELFTESTS_OBS)"
2200   CONFIG_SRCS="$CONFIG_SRCS \$(SELFTESTS_SRCS)"
2201 ])
2202
2203 GDB_AC_TRANSFORM([gdb], [GDB_TRANSFORM_NAME])
2204 GDB_AC_TRANSFORM([gcore], [GCORE_TRANSFORM_NAME])
2205 AC_CONFIG_FILES([gcore], [chmod +x gcore])
2206 AC_CONFIG_FILES([Makefile gdb-gdb.gdb gdb-gdb.py doc/Makefile data-directory/Makefile])
2207
2208 AC_OUTPUT