gdb/configure.ac

   1 dnl Autoconf configure script for GDB, the GNU debugger.
   2 dnl Copyright (C) 1995-2019 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(main.c)
  22 AC_CONFIG_HEADER(config.h:config.in)
  23 AM_MAINTAINER_MODE
  24
  25 # Set the 'development' global.
  26 . $srcdir/../bfd/development.sh
  27
  28 AC_PROG_CC
  29 AC_PROG_CXX
  30
  31 AC_USE_SYSTEM_EXTENSIONS
  32 ACX_LARGEFILE
  33 AM_PROG_CC_STDC
  34 AM_PROG_INSTALL_STRIP
  35
  36 AC_CONFIG_AUX_DIR(..)
  37 AC_CANONICAL_SYSTEM
  38 AC_ARG_PROGRAM
  39
  40 # We require a C++11 compiler.  Check if one is available, and if
  41 # necessary, set CXX_DIALECT to some -std=xxx switch.
  42 AX_CXX_COMPILE_STDCXX(11, , mandatory)
  43
  44 # Dependency checking.
  45 ZW_CREATE_DEPDIR
  46 ZW_PROG_COMPILER_DEPENDENCIES([CC])
  47
  48 dnl List of object files and targets accumulated by configure.
  49
  50 CONFIG_OBS=
  51 CONFIG_DEPS=
  52 CONFIG_SRCS=
  53 ENABLE_CFLAGS=
  54
  55 CONFIG_ALL=
  56 CONFIG_CLEAN=
  57 CONFIG_INSTALL=
  58 CONFIG_UNINSTALL=
  59
  60 dnl Set up for gettext.
  61 ZW_GNU_GETTEXT_SISTER_DIR
  62
  63 localedir='${datadir}/locale'
  64 AC_SUBST(localedir)
  65
  66 if test x"$USE_NLS" = xyes; then
  67    CONFIG_ALL="$CONFIG_ALL all-po"
  68    CONFIG_CLEAN="$CONFIG_CLEAN clean-po"
  69    CONFIG_INSTALL="$CONFIG_INSTALL install-po"
  70    CONFIG_UNINSTALL="$CONFIG_UNINSTALL uninstall-po"
  71 fi
  72
  73 PACKAGE=gdb
  74 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of this package. ])
  75 AC_SUBST(PACKAGE)
  76
  77 # We never need to detect it in this sub-configure.
  78 # But preserve it for config.status --recheck.
  79 AC_ARG_VAR(MAKEINFO,
  80   [Parent configure detects if it is of sufficient version.])
  81 AC_ARG_VAR(MAKEINFOFLAGS,
  82   [Parameters for MAKEINFO.])
  83
  84 MAKEINFO_EXTRA_FLAGS=""
  85 AC_CACHE_CHECK([whether $MAKEINFO supports @click], gdb_cv_have_makeinfo_click,
  86   [echo '@clicksequence{a @click{} b}' >conftest.texinfo
  87   if eval "$MAKEINFO conftest.texinfo >&5 2>&5"; then
  88     gdb_cv_have_makeinfo_click=yes
  89   else
  90     gdb_cv_have_makeinfo_click=no
  91   fi])
  92 if test x"$gdb_cv_have_makeinfo_click" = xyes; then
  93   MAKEINFO_EXTRA_FLAGS="$MAKEINFO_EXTRA_FLAGS -DHAVE_MAKEINFO_CLICK"
  94 fi
  95 AC_SUBST(MAKEINFO_EXTRA_FLAGS)
  96
  97 GDB_AC_WITH_DIR(DEBUGDIR, separate-debug-dir,
  98     [look for global separate debug info in this path @<:@LIBDIR/debug@:>@],
  99     [${libdir}/debug])
 100
 101 # We can't pass paths as command line arguments.
 102 # Mingw32 tries to be clever and will convert the paths for us.
 103 # For example -DBINDIR="/usr/local/bin" passed on the command line may get
 104 # converted to -DBINDIR="E:/msys/mingw32/msys/1.0/local/bin".
 105 # This breaks GDB's relocatable path conversions since paths passed in
 106 # config.h would not get so translated, the path prefixes no longer match.
 107 AC_DEFINE_DIR(BINDIR, bindir, [Directory of programs.])
 108
 109 # GDB's datadir relocation
 110
 111 GDB_AC_WITH_DIR(GDB_DATADIR, gdb-datadir,
 112     [look for global separate data files in this path @<:@DATADIR/gdb@:>@],
 113     [${datadir}/gdb])
 114
 115 AC_ARG_WITH(relocated-sources,
 116 AS_HELP_STRING([--with-relocated-sources=PATH], [automatically relocate this path for source files]),
 117 [reloc_srcdir="${withval}"
 118  AC_DEFINE_DIR(RELOC_SRCDIR, reloc_srcdir,
 119               [Relocated directory for source files. ])
 120 ])
 121
 122 AC_MSG_CHECKING([for default auto-load directory])
 123 AC_ARG_WITH(auto-load-dir,
 124 AS_HELP_STRING([--with-auto-load-dir=PATH],
 125   [directories from which to load auto-loaded scripts @<:@$debugdir:$datadir/auto-load@:>@]),,
 126   [with_auto_load_dir='$debugdir:$datadir/auto-load'])
 127 escape_dir=`echo $with_auto_load_dir | sed -e 's/[[$]]datadir\>/\\\\\\\\\\\\&/g' -e 's/[[$]]debugdir\>/\\\\\\\\\\\\&/g'`
 128 AC_DEFINE_DIR(AUTO_LOAD_DIR, escape_dir,
 129               [Directories from which to load auto-loaded scripts.])
 130 AC_MSG_RESULT([$with_auto_load_dir])
 131
 132 AC_MSG_CHECKING([for default auto-load safe-path])
 133 AC_ARG_WITH(auto-load-safe-path,
 134 AS_HELP_STRING([--with-auto-load-safe-path=PATH],
 135   [directories safe to hold auto-loaded files @<:@--with-auto-load-dir@:>@])
 136 AS_HELP_STRING([--without-auto-load-safe-path],
 137                [do not restrict auto-loaded files locations]),
 138     [if test "$with_auto_load_safe_path" = "no"; then
 139      with_auto_load_safe_path="/"
 140      fi],
 141 [with_auto_load_safe_path="$with_auto_load_dir"])
 142 escape_dir=`echo $with_auto_load_safe_path | sed -e 's/[[$]]datadir\>/\\\\\\\\\\\\&/g' -e 's/[[$]]debugdir\>/\\\\\\\\\\\\&/g'`
 143 AC_DEFINE_DIR(AUTO_LOAD_SAFE_PATH, escape_dir,
 144               [Directories safe to hold auto-loaded files.])
 145 AC_MSG_RESULT([$with_auto_load_safe_path])
 146
 147 AC_CONFIG_SUBDIRS(testsuite)
 148
 149 # Check whether to support alternative target configurations
 150 AC_ARG_ENABLE(targets,
 151 AS_HELP_STRING([--enable-targets=TARGETS], [alternative target configurations]),
 152 [case "${enableval}" in
 153   yes | "") AC_ERROR(enable-targets option must specify target names or 'all')
 154             ;;
 155   no)       enable_targets= ;;
 156   *)        enable_targets=$enableval ;;
 157 esac])
 158
 159 # Check whether to enable 64-bit support on 32-bit hosts
 160 AC_ARG_ENABLE(64-bit-bfd,
 161 AS_HELP_STRING([--enable-64-bit-bfd], [64-bit support (on hosts with narrower word sizes)]),
 162 [case "${enableval}" in
 163   yes)  want64=true  ;;
 164   no)   want64=false ;;
 165   *)    AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;;
 166 esac],[want64=false])dnl
 167
 168 # Provide defaults for some variables set by the per-host and per-target
 169 # configuration.
 170 gdb_host_obs=posix-hdep.o
 171
 172 if test "${target}" = "${host}"; then
 173   gdb_native=yes
 174 else
 175   gdb_native=no
 176 fi
 177
 178 . $srcdir/configure.host
 179
 180 # Add in the common host objects.
 181 . $srcdir/gdbsupport/common.host
 182 gdb_host_obs="$gdb_host_obs $common_host_obs"
 183
 184 # Accumulate some settings from configure.tgt over all enabled targets
 185
 186 TARGET_OBS=
 187 all_targets=
 188 HAVE_NATIVE_GCORE_TARGET=
 189
 190 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
 191 do
 192   if test "$targ_alias" = "all"; then
 193     all_targets=true
 194   else
 195     # Canonicalize the secondary target names.
 196     result=`$ac_config_sub $targ_alias 2>/dev/null`
 197     if test -n "$result"; then
 198         targ=$result
 199     else
 200         targ=$targ_alias
 201     fi
 202
 203     . ${srcdir}/configure.tgt
 204
 205     AS_IF([test -z "${gdb_target_obs}"],
 206       [AC_MSG_ERROR([configuration ${targ} is unsupported.])])
 207
 208     # Target-specific object files
 209     for i in ${gdb_target_obs}; do
 210         case " $TARGET_OBS " in
 211         *" ${i} "*) ;;
 212         *)
 213           TARGET_OBS="$TARGET_OBS ${i}"
 214           ;;
 215         esac
 216     done
 217
 218     # Check whether this target needs 64-bit CORE_ADDR
 219     if test x${want64} = xfalse; then
 220       . ${srcdir}/../bfd/config.bfd
 221     fi
 222
 223     # Check whether this target is native and supports gcore.
 224     if test $gdb_native = yes -a "$targ_alias" = "$target_alias" \
 225        && $gdb_have_gcore; then
 226       HAVE_NATIVE_GCORE_TARGET=1
 227     fi
 228   fi
 229 done
 230
 231 if test x${all_targets} = xtrue; then
 232
 233   # We want all 64-bit targets if we either:
 234   #  - run on a 64-bit host  or
 235   #  - already require 64-bit support for some other target  or
 236   #  - the --enable-64-bit-bfd option was supplied
 237   # Otherwise we only support all 32-bit targets.
 238   #
 239   # NOTE: This test must be in sync with the corresponding
 240   #       tests in BFD!
 241
 242   if test x${want64} = xfalse; then
 243     AC_CHECK_SIZEOF(long)
 244     if test "x${ac_cv_sizeof_long}" = "x8"; then
 245       want64=true
 246     fi
 247   fi
 248   if test x${want64} = xtrue; then
 249     TARGET_OBS='$(ALL_TARGET_OBS) $(ALL_64_TARGET_OBS)'
 250   else
 251     TARGET_OBS='$(ALL_TARGET_OBS)'
 252   fi
 253 fi
 254
 255 AC_SUBST(TARGET_OBS)
 256 AC_SUBST(HAVE_NATIVE_GCORE_TARGET)
 257
 258 # For other settings, only the main target counts.
 259 gdb_sim=
 260 gdb_osabi=
 261 build_gdbserver=
 262 targ=$target; . ${srcdir}/configure.tgt
 263
 264 # Fetch the default architecture and default target vector from BFD.
 265 targ=$target; . $srcdir/../bfd/config.bfd
 266
 267 # We only want the first architecture, so strip off the others if
 268 # there is more than one.
 269 targ_archs=`echo $targ_archs | sed 's/ .*//'`
 270
 271 if test "x$targ_archs" != x; then
 272   AC_DEFINE_UNQUOTED(DEFAULT_BFD_ARCH, $targ_archs,
 273     [Define to BFD's default architecture. ])
 274 fi
 275 if test "x$targ_defvec" != x; then
 276   AC_DEFINE_UNQUOTED(DEFAULT_BFD_VEC, $targ_defvec,
 277     [Define to BFD's default target vector. ])
 278 fi
 279
 280 # Enable MI.
 281 AC_ARG_ENABLE(gdbmi,
 282 AS_HELP_STRING([--disable-gdbmi], [disable machine-interface (MI)]),
 283   [case $enableval in
 284     yes | no)
 285       ;;
 286     *)
 287       AC_MSG_ERROR([bad value $enableval for --enable-gdbmi]) ;;
 288   esac],
 289   [enable_gdbmi=yes])
 290 if test x"$enable_gdbmi" = xyes; then
 291   if test -d $srcdir/mi; then
 292     CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_MI_OBS)"
 293     CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_MI_DEPS)"
 294     CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_MI_SRCS)"
 295     ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_MI_CFLAGS)"
 296   fi
 297 fi
 298
 299 # Enable TUI.
 300 AC_ARG_ENABLE(tui,
 301 AS_HELP_STRING([--enable-tui], [enable full-screen terminal user interface (TUI)]),
 302   [case $enableval in
 303     yes | no | auto)
 304       ;;
 305     *)
 306       AC_MSG_ERROR([bad value $enableval for --enable-tui]) ;;
 307   esac],enable_tui=auto)
 308
 309 # Enable gdbtk.
 310 AC_ARG_ENABLE(gdbtk,
 311 AS_HELP_STRING([--enable-gdbtk], [enable gdbtk graphical user interface (GUI)]),
 312   [case $enableval in
 313     yes | no)
 314       ;;
 315     *)
 316       AC_MSG_ERROR([bad value $enableval for --enable-gdbtk]) ;;
 317   esac],
 318   [if test -d $srcdir/gdbtk; then
 319     enable_gdbtk=yes
 320   else
 321     enable_gdbtk=no
 322   fi])
 323 # We unconditionally disable gdbtk tests on selected platforms.
 324 case $host_os in
 325   go32* | windows*)
 326     AC_MSG_WARN([gdbtk isn't supported on $host; disabling])
 327     enable_gdbtk=no ;;
 328 esac
 329
 330 # Libunwind support for ia64.
 331
 332 AC_ARG_WITH(libunwind-ia64,
 333 AS_HELP_STRING([--with-libunwind-ia64],
 334                [use libunwind frame unwinding for ia64 targets]),,
 335             [with_libunwind_ia64=auto])
 336
 337 # Backward compatibility option.
 338 if test "${with_libunwind+set}" = set; then
 339   if test x"$with_libunwind_ia64" != xauto; then
 340     AC_MSG_ERROR(
 341       [option --with-libunwind is deprecated, use --with-libunwind-ia64])
 342   fi
 343   AC_MSG_WARN([option --with-libunwind is deprecated, use --with-libunwind-ia64])
 344   with_libunwind_ia64="$with_libunwind"
 345 fi
 346
 347 case "$with_libunwind_ia64" in
 348   yes | no)
 349     ;;
 350   auto)
 351     AC_CHECK_HEADERS(libunwind-ia64.h)
 352     with_libunwind_ia64=$ac_cv_header_libunwind_ia64_h
 353     ;;
 354   *)
 355     AC_MSG_ERROR(
 356       [bad value $with_libunwind_ia64 for GDB --with-libunwind-ia64 option])
 357     ;;
 358 esac
 359
 360 if test x"$with_libunwind_ia64" = xyes; then
 361   AC_CHECK_HEADERS(libunwind-ia64.h)
 362   if test x"$ac_cv_header_libunwind_ia64_h" != xyes; then
 363     AC_MSG_ERROR([GDB option --with-libunwind-ia64 requires libunwind-ia64.h])
 364   fi
 365   CONFIG_OBS="$CONFIG_OBS ia64-libunwind-tdep.o"
 366   CONFIG_DEPS="$CONFIG_DEPS ia64-libunwind-tdep.o"
 367   CONFIG_SRCS="$CONFIG_SRCS ia64-libunwind-tdep.c"
 368 fi
 369
 370 opt_curses=no
 371 AC_ARG_WITH(curses, AS_HELP_STRING([--with-curses], [use the curses library instead of the termcap library]), opt_curses=$withval)
 372
 373 prefer_curses=no
 374 if test "$opt_curses" = "yes"; then
 375   prefer_curses=yes
 376 fi
 377
 378 # Profiling support.
 379 AC_ARG_ENABLE(profiling,
 380 AS_HELP_STRING([--enable-profiling], [enable profiling of GDB]),
 381   [case $enableval in
 382     yes | no)
 383       ;;
 384     *)
 385       AC_MSG_ERROR([bad value $enableval for --enable-profile]) ;;
 386   esac],
 387  [enable_profiling=no])
 388
 389 AC_CHECK_FUNCS(monstartup _mcleanup)
 390 AC_CACHE_CHECK([for _etext], ac_cv_var__etext,
 391 [AC_TRY_LINK(
 392 [#include <stdlib.h>
 393 extern char _etext;
 394 ],
 395 [free (&_etext);], ac_cv_var__etext=yes, ac_cv_var__etext=no)])
 396 if test $ac_cv_var__etext = yes; then
 397   AC_DEFINE(HAVE__ETEXT, 1,
 398             [Define to 1 if your system has the _etext variable. ])
 399 fi
 400 AC_CACHE_CHECK([for etext], ac_cv_var_etext,
 401 [AC_TRY_LINK(
 402 [#include <stdlib.h>
 403 extern char etext;
 404 ],
 405 [free (&etext);], ac_cv_var_etext=yes, ac_cv_var_etext=no)])
 406 if test $ac_cv_var_etext = yes; then
 407   AC_DEFINE(HAVE_ETEXT, 1,
 408             [Define to 1 if your system has the etext variable. ])
 409 fi
 410 if test "$enable_profiling" = yes ; then
 411   if test $ac_cv_func_monstartup = no || test $ac_cv_func__mcleanup = no; then
 412     AC_MSG_ERROR(--enable-profiling requires monstartup and _mcleanup)
 413   fi
 414   PROFILE_CFLAGS=-pg
 415   OLD_CFLAGS="$CFLAGS"
 416   CFLAGS="$CFLAGS $PROFILE_CFLAGS"
 417
 418   AC_CACHE_CHECK([whether $CC supports -pg], ac_cv_cc_supports_pg,
 419     [AC_TRY_COMPILE([], [int x;], ac_cv_cc_supports_pg=yes,
 420      ac_cv_cc_supports_pg=no)])
 421
 422   if test $ac_cv_cc_supports_pg = no; then
 423     AC_MSG_ERROR(--enable-profiling requires a compiler which supports -pg)
 424   fi
 425
 426   CFLAGS="$OLD_CFLAGS"
 427 fi
 428
 429 CODESIGN_CERT=
 430 AC_ARG_ENABLE([codesign],
 431   AS_HELP_STRING([--enable-codesign=CERT],
 432                  [sign gdb with 'codesign -s CERT']),
 433   [CODESIGN_CERT=$enableval])
 434 AC_SUBST([CODESIGN_CERT])
 435
 436 ACX_PKGVERSION([GDB])
 437 ACX_BUGURL([http://www.gnu.org/software/gdb/bugs/])
 438 AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
 439 AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
 440
 441 # --------------------- #
 442 # Checks for programs.  #
 443 # --------------------- #
 444
 445 AC_PROG_AWK
 446 AC_PROG_INSTALL
 447 AC_PROG_LN_S
 448 AC_PROG_RANLIB
 449 AC_PROG_YACC
 450
 451 AC_CHECK_TOOL(AR, ar)
 452 AC_CHECK_TOOL(DLLTOOL, dlltool)
 453 AC_CHECK_TOOL(WINDRES, windres)
 454
 455 case $host_os in
 456   gnu*)
 457     # Needed for GNU Hurd hosts.
 458     AC_CHECK_TOOL(MIG, mig)
 459     if test x"$MIG" = x; then
 460       AC_MSG_ERROR([MIG not found but required for $host hosts])
 461     fi
 462     ;;
 463 esac
 464
 465 # ---------------------- #
 466 # Checks for libraries.  #
 467 # ---------------------- #
 468
 469 # We might need to link with -lm; most simulators need it.
 470 AC_CHECK_LIB(m, main)
 471
 472 # Some systems (e.g. Solaris) have `gethostbyname' in libnsl.
 473 AC_SEARCH_LIBS(gethostbyname, nsl)
 474
 475 # Some systems (e.g. Solaris) have `socketpair' in libsocket.
 476 AC_SEARCH_LIBS(socketpair, socket)
 477
 478 # Link in zlib if we can.  This allows us to read compressed debug sections.
 479 AM_ZLIB
 480
 481 # On FreeBSD we may need libutil for kinfo_getvmmap (used by fbsd-nat.c).
 482 # On GNU/kFreeBSD systems, FreeBSD libutil is renamed to libutil-freebsd.
 483 AC_SEARCH_LIBS(kinfo_getvmmap, util util-freebsd,
 484   [AC_DEFINE(HAVE_KINFO_GETVMMAP, 1,
 485             [Define to 1 if your system has the kinfo_getvmmap function. ])])
 486
 487 # fbsd-nat.c can also use kinfo_getfile.
 488 AC_SEARCH_LIBS(kinfo_getfile, util util-freebsd,
 489   [AC_DEFINE(HAVE_KINFO_GETFILE, 1,
 490             [Define to 1 if your system has the kinfo_getfile function. ])])
 491
 492 AM_ICONV
 493
 494 # GDB may fork/exec the iconv program to get the list of supported character
 495 # sets.  Allow the user to specify where to find it.
 496 # There are several factors affecting the choice of option name:
 497 # - There is already --with-libiconv-prefix but we can't use it, it specifies
 498 #   the build-time location of libiconv files.
 499 # - The program we need to find is iconv, which comes with glibc.  The user
 500 #   doesn't necessarily have libiconv installed.  Therefore naming this
 501 #   --with-libiconv-foo feels wrong.
 502 # - We want the path to be relocatable, but GDB_AC_DEFINE_RELOCATABLE is
 503 #   defined to work on directories not files (though it really doesn't know
 504 #   the difference).
 505 # - Calling this --with-iconv-prefix is perceived to cause too much confusion
 506 #   with --with-libiconv-prefix.
 507 # Putting these together is why the option name is --with-iconv-bin.
 508
 509 AC_ARG_WITH(iconv-bin,
 510 AS_HELP_STRING([--with-iconv-bin=PATH], [specify where to find the iconv program]),
 511 [iconv_bin="${withval}"
 512  AC_DEFINE_UNQUOTED([ICONV_BIN], ["${iconv_bin}"],
 513                     [Path of directory of iconv program.])
 514  GDB_AC_DEFINE_RELOCATABLE(ICONV_BIN, iconv, ${iconv_bin})
 515 ])
 516
 517 # For the TUI, we need enhanced curses functionality.
 518 if test x"$enable_tui" != xno; then
 519   prefer_curses=yes
 520 fi
 521
 522 curses_found=no
 523 if test x"$prefer_curses" = xyes; then
 524   # FIXME: kettenis/20040905: We prefer ncurses over the vendor-supplied
 525   # curses library because the latter might not provide all the
 526   # functionality we need.  However, this leads to problems on systems
 527   # where the linker searches /usr/local/lib, but the compiler doesn't
 528   # search /usr/local/include, if ncurses is installed in /usr/local.  A
 529   # default installation of ncurses on alpha*-dec-osf* will lead to such
 530   # a situation.
 531   AC_SEARCH_LIBS(waddstr, [ncursesw ncurses cursesX curses])
 532
 533   if test "$ac_cv_search_waddstr" != no; then
 534     curses_found=yes
 535   fi
 536 fi
 537
 538 # Check whether we should enable the TUI, but only do so if we really
 539 # can.
 540 if test x"$enable_tui" != xno; then
 541   if test -d $srcdir/tui; then
 542     if test "$curses_found" != no; then
 543       CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_TUI_OBS)"
 544       CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_TUI_DEPS)"
 545       CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_TUI_SRCS)"
 546       ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_TUI_CFLAGS)"
 547     else
 548       if test x"$enable_tui" = xyes; then
 549         AC_MSG_ERROR([no enhanced curses library found; disable TUI])
 550       else
 551         AC_MSG_WARN([no enhanced curses library found; disabling TUI])
 552       fi
 553     fi
 554   fi
 555 fi
 556
 557 # Since GDB uses Readline, we need termcap functionality.  In many
 558 # cases this will be provided by the curses library, but some systems
 559 # have a separate termcap library, or no curses library at all.
 560
 561 case $host_os in
 562   cygwin*)
 563     if test -d $srcdir/libtermcap; then
 564       LIBS="../libtermcap/libtermcap.a $LIBS"
 565       ac_cv_search_tgetent="../libtermcap/libtermcap.a"
 566     fi ;;
 567   go32* | *djgpp*)
 568     ac_cv_search_tgetent="none required"
 569     ;;
 570 esac
 571
 572 # These are the libraries checked by Readline.
 573 AC_SEARCH_LIBS(tgetent, [termcap tinfow tinfo curses ncursesw ncurses])
 574
 575 if test "$ac_cv_search_tgetent" = no; then
 576   CONFIG_OBS="$CONFIG_OBS stub-termcap.o"
 577 fi
 578
 579 AC_ARG_WITH([system-readline],
 580   [AS_HELP_STRING([--with-system-readline],
 581                   [use installed readline library])])
 582
 583 if test "$with_system_readline" = yes; then
 584    AC_CACHE_CHECK([whether system readline is new enough],
 585      [gdb_cv_readline_ok],
 586      [AC_TRY_COMPILE(
 587        [#include <stdio.h>
 588 #include <readline/readline.h>],
 589        [#if RL_VERSION_MAJOR < 7
 590 # error "readline version 7 required"
 591 #endif],
 592     gdb_cv_readline_ok=yes,
 593     gdb_cv_readline_ok=no)])
 594   if test "$gdb_cv_readline_ok" != yes; then
 595     AC_MSG_ERROR([system readline is not new enough])
 596   fi
 597
 598   READLINE=-lreadline
 599   READLINE_DEPS=
 600   READLINE_CFLAGS=
 601   READLINE_TEXI_INCFLAG=
 602 else
 603   READLINE='$(READLINE_DIR)/libreadline.a'
 604   READLINE_DEPS='$(READLINE)'
 605   READLINE_CFLAGS='-I$(READLINE_SRC)/..'
 606   READLINE_TEXI_INCFLAG='-I $(READLINE_DIR)'
 607 fi
 608 AC_SUBST(READLINE)
 609 AC_SUBST(READLINE_DEPS)
 610 AC_SUBST(READLINE_CFLAGS)
 611 AC_SUBST(READLINE_TEXI_INCFLAG)
 612
 613 # Generate jit-reader.h
 614
 615 # This is typedeffed to GDB_CORE_ADDR in jit-reader.h
 616 TARGET_PTR=
 617
 618 AC_CHECK_SIZEOF(unsigned long long)
 619 AC_CHECK_SIZEOF(unsigned long)
 620 AC_CHECK_SIZEOF(unsigned __int128)
 621
 622 if test "x${ac_cv_sizeof_unsigned_long}" = "x8"; then
 623   TARGET_PTR="unsigned long"
 624 elif test "x${ac_cv_sizeof_unsigned_long_long}" = "x8"; then
 625   TARGET_PTR="unsigned long long"
 626 elif test "x${ac_cv_sizeof_unsigned___int128}" = "x16"; then
 627   TARGET_PTR="unsigned __int128"
 628 else
 629   TARGET_PTR="unsigned long"
 630 fi
 631
 632 AC_SUBST(TARGET_PTR)
 633 AC_CONFIG_FILES([jit-reader.h:jit-reader.in])
 634
 635 AC_SEARCH_LIBS(dlopen, dl)
 636
 637 GDB_AC_WITH_DIR([JIT_READER_DIR], [jit-reader-dir],
 638                 [directory to load the JIT readers from],
 639                 [${libdir}/gdb])
 640
 641 AC_ARG_WITH(expat,
 642   AS_HELP_STRING([--with-expat], [include expat support (auto/yes/no)]),
 643   [], [with_expat=auto])
 644 AC_MSG_CHECKING([whether to use expat])
 645 AC_MSG_RESULT([$with_expat])
 646
 647 if test "${with_expat}" = no; then
 648   AC_MSG_WARN([expat support disabled; some features may be unavailable.])
 649   HAVE_LIBEXPAT=no
 650 else
 651   AC_LIB_HAVE_LINKFLAGS([expat], [], [#include "expat.h"],
 652                         [XML_Parser p = XML_ParserCreate (0);])
 653   if test "$HAVE_LIBEXPAT" != yes; then
 654     if test "$with_expat" = yes; then
 655       AC_MSG_ERROR([expat is missing or unusable])
 656     else
 657       AC_MSG_WARN([expat is missing or unusable; some features may be unavailable.])
 658     fi
 659   else
 660     save_LIBS=$LIBS
 661     LIBS="$LIBS $LIBEXPAT"
 662     AC_CHECK_FUNCS(XML_StopParser)
 663     LIBS=$save_LIBS
 664   fi
 665 fi
 666
 667 AC_ARG_WITH(mpfr,
 668   AS_HELP_STRING([--with-mpfr], [include MPFR support (auto/yes/no)]),
 669   [], [with_mpfr=auto])
 670 AC_MSG_CHECKING([whether to use MPFR])
 671 AC_MSG_RESULT([$with_mpfr])
 672
 673 if test "${with_mpfr}" = no; then
 674   AC_MSG_WARN([MPFR support disabled; some features may be unavailable.])
 675   HAVE_LIBMPFR=no
 676 else
 677   AC_LIB_HAVE_LINKFLAGS([mpfr], [gmp], [#include <mpfr.h>],
 678                         [mpfr_exp_t exp; mpfr_t x;
 679                          mpfr_frexp (&exp, x, x, MPFR_RNDN);])
 680   if test "$HAVE_LIBMPFR" != yes; then
 681     if test "$with_mpfr" = yes; then
 682       AC_MSG_ERROR([MPFR is missing or unusable])
 683     else
 684       AC_MSG_WARN([MPFR is missing or unusable; some features may be unavailable.])
 685     fi
 686   fi
 687 fi
 688
 689 # --------------------- #
 690 # Check for libpython.  #
 691 # --------------------- #
 692
 693 dnl Utility to simplify finding libpython.
 694 dnl $1 = pythonX.Y
 695 dnl $2 = the shell variable to assign the result to
 696 dnl      If libpython is found we store $version here.
 697 dnl $3 = additional flags to add to CPPFLAGS
 698 dnl $4 = additional flags to add to LIBS
 699
 700 AC_DEFUN([AC_TRY_LIBPYTHON],
 701 [
 702   version=$1
 703   define([have_libpython_var],$2)
 704   new_CPPFLAGS=$3
 705   new_LIBS=$4
 706   AC_MSG_CHECKING([for ${version}])
 707   save_CPPFLAGS=$CPPFLAGS
 708   save_LIBS=$LIBS
 709   CPPFLAGS="$CPPFLAGS $new_CPPFLAGS"
 710   LIBS="$new_LIBS $LIBS"
 711   found_usable_python=no
 712   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include "Python.h"]],
 713                                  [[Py_Initialize ();]])],
 714                  [have_libpython_var=${version}
 715                   found_usable_python=yes
 716                   PYTHON_CPPFLAGS=$new_CPPFLAGS
 717                   PYTHON_LIBS=$new_LIBS])
 718   CPPFLAGS=$save_CPPFLAGS
 719   LIBS=$save_LIBS
 720   AC_MSG_RESULT([${found_usable_python}])
 721 ])
 722
 723 dnl There are several different values for --with-python:
 724 dnl
 725 dnl no -   Don't include python support.
 726 dnl yes -  Include python support, error if it's missing.
 727 dnl        If we find python in $PATH, use it to fetch configure options,
 728 dnl        otherwise assume the compiler can find it with no help from us.
 729 dnl        Python 2.7 and 2.6 are tried in turn.
 730 dnl auto - Same as "yes", but if python is missing from the system,
 731 dnl        fall back to "no".
 732 dnl /path/to/python/exec-prefix -
 733 dnl        Use the python located in this directory.
 734 dnl        If /path/to/python/exec-prefix/bin/python exists, use it to find
 735 dnl        the compilation parameters.  Otherwise use
 736 dnl        -I/path/to/python/exec-prefix/include,
 737 dnl        -L/path/to/python/exec-prefix/lib.
 738 dnl        Python 2.7 and 2.6 are tried in turn.
 739 dnl        NOTE: This case is historical.  It is what was done for 7.0/7.1
 740 dnl        but is deprecated.
 741 dnl /path/to/python/executable -
 742 dnl        Run python-config.py with this version of python to fetch the
 743 dnl        compilation parameters.
 744 dnl        NOTE: This needn't be the real python executable.
 745 dnl        In a cross-compilation scenario (build != host), this could be
 746 dnl        a shell script that provides what python-config.py provides for
 747 dnl        --ldflags, --includes, --exec-prefix.
 748 dnl python-executable -
 749 dnl        Find python-executable in $PATH, and then handle the same as
 750 dnl        /path/to/python/executable.
 751 dnl
 752 dnl If a python program is specified, it is used to run python-config.py and
 753 dnl is passed --ldflags, --includes, --exec-prefix.
 754
 755 AC_ARG_WITH(python,
 756   AS_HELP_STRING([--with-python@<:@=PYTHON@:>@], [include python support (auto/yes/no/<python-program>)]),
 757   [], [with_python=auto])
 758 AC_MSG_CHECKING([whether to use python])
 759 AC_MSG_RESULT([$with_python])
 760
 761 if test "${with_python}" = no; then
 762   AC_MSG_WARN([python support disabled; some features may be unavailable.])
 763   have_libpython=no
 764 else
 765   case "${with_python}" in
 766   [[\\/]]* | ?:[[\\/]]*)
 767     if test -d ${with_python}; then
 768       # Assume the python binary is ${with_python}/bin/python.
 769       python_prog="${with_python}/bin/python"
 770       python_prefix=
 771       # If python does not exit ${with_python}/bin, then try in
 772       # ${with_python}.  On Windows/MinGW, this is where the Python
 773       # executable is.
 774       if test ! -x "${python_prog}"; then
 775         python_prog="${with_python}/python"
 776         python_prefix=
 777       fi
 778       if test ! -x "${python_prog}"; then
 779         # Fall back to gdb 7.0/7.1 behaviour.
 780         python_prog=missing
 781         python_prefix=${with_python}
 782       fi
 783     elif test -x "${with_python}"; then
 784       # While we can't run python compiled for $host (unless host == build),
 785       # the user could write a script that provides the needed information,
 786       # so we support that.
 787       python_prog=${with_python}
 788       python_prefix=
 789     else
 790       AC_ERROR(invalid value for --with-python)
 791     fi
 792     ;;
 793   */*)
 794     # Disallow --with-python=foo/bar.
 795     AC_ERROR(invalid value for --with-python)
 796     ;;
 797   *)
 798     # The user has either specified auto, yes, or the name of the python
 799     # program assumed to be in $PATH.
 800     python_prefix=
 801     case "${with_python}" in
 802     yes | auto)
 803       if test ${build} = ${host}; then
 804         AC_PATH_PROG(python_prog_path, python, missing)
 805         if test "${python_prog_path}" = missing; then
 806           python_prog=missing
 807         else
 808           python_prog=${python_prog_path}
 809         fi
 810       else
 811         # Not much we can do except assume the cross-compiler will find the
 812         # right files.
 813         python_prog=missing
 814       fi
 815       ;;
 816     *)
 817       # While we can't run python compiled for $host (unless host == build),
 818       # the user could write a script that provides the needed information,
 819       # so we support that.
 820       python_prog="${with_python}"
 821       AC_PATH_PROG(python_prog_path, ${python_prog}, missing)
 822       if test "${python_prog_path}" = missing; then
 823         AC_ERROR(unable to find python program ${python_prog})
 824       fi
 825       ;;
 826     esac
 827   esac
 828
 829   if test "${python_prog}" != missing; then
 830     # We have a python program to use, but it may be too old.
 831     # Don't flag an error for --with-python=auto (the default).
 832     have_python_config=yes
 833     python_includes=`${python_prog} ${srcdir}/python/python-config.py --includes`
 834     if test $? != 0; then
 835       have_python_config=failed
 836       if test "${with_python}" != auto; then
 837         AC_ERROR(failure running python-config --includes)
 838       fi
 839     fi
 840     python_libs=`${python_prog} ${srcdir}/python/python-config.py --ldflags`
 841     if test $? != 0; then
 842       have_python_config=failed
 843       if test "${with_python}" != auto; then
 844         AC_ERROR(failure running python-config --ldflags)
 845       fi
 846     fi
 847     python_prefix=`${python_prog} ${srcdir}/python/python-config.py --exec-prefix`
 848     if test $? != 0; then
 849       have_python_config=failed
 850       if test "${with_python}" != auto; then
 851         AC_ERROR(failure running python-config --exec-prefix)
 852       fi
 853     fi
 854   else
 855     # We do not have a python executable we can use to determine where
 856     # to find the Python headers and libs.  We cannot guess the include
 857     # path from the python_prefix either, because that include path
 858     # depends on the Python version.  So, there is nothing much we can
 859     # do except assume that the compiler will be able to find those files.
 860     python_includes=
 861     python_libs=
 862     have_python_config=no
 863   fi
 864
 865   # If we have python-config, only try the configuration it provides.
 866   # Otherwise fallback on the old way of trying different versions of
 867   # python in turn.
 868
 869   have_libpython=no
 870   if test "${have_python_config}" = yes; then
 871     # Determine the Python version by extracting "-lpython<version>"
 872     # part of the python_libs. <version> is usually X.Y with X and Y
 873     # being decimal numbers, but can also be XY (seen on Windows).
 874     #
 875     # The extraction is performed using sed with a regular expression.
 876     # Initially, the regexp used was using the '?' quantifier to make
 877     # the dot in the version number optional.  Unfortunately, this
 878     # does not work with non-GNU versions of sed because, because of
 879     # what looks like a limitation (the '?' quantifier does not work
 880     # with back-references).  We work around this limitation by using
 881     # the '*' quantifier instead.  It means that, in theory, we might
 882     # match unexpected version strings such as "-lpython2..7", but
 883     # this seems unlikely in practice.  And even if that happens,
 884     # an error will be triggered later on, when checking that version
 885     # number.
 886     python_version=`echo " ${python_libs} " \
 887                          | sed -e 's,^.* -l\(python[[0-9]]*[[.]]*[[0-9]]*\).*$,\1,'`
 888     case "${python_version}" in
 889     python*)
 890       AC_TRY_LIBPYTHON(${python_version}, have_libpython,
 891                        ${python_includes}, ${python_libs})
 892       ;;
 893     *)
 894       AC_MSG_ERROR([unable to determine python version from ${python_libs}])
 895       ;;
 896     esac
 897   elif test "${have_python_config}" != failed; then
 898     if test "${have_libpython}" = no; then
 899       AC_TRY_LIBPYTHON(python2.7, have_libpython,
 900                        ${python_includes}, "-lpython2.7 ${python_libs}")
 901     fi
 902     if test "${have_libpython}" = no; then
 903       AC_TRY_LIBPYTHON(python2.6, have_libpython,
 904                        ${python_includes}, "-lpython2.6 ${python_libs}")
 905     fi
 906   fi
 907   if test "${have_libpython}" = python2.7 -o "${have_libpython}" = python27; then
 908     AC_DEFINE(HAVE_LIBPYTHON2_7, 1, [Define if Python 2.7 is being used.])
 909   elif test "${have_libpython}" = python2.6 -o "${have_libpython}" = python26; then
 910     AC_DEFINE(HAVE_LIBPYTHON2_6, 1, [Define if Python 2.6 is being used.])
 911   fi
 912
 913   if test "${have_libpython}" = no; then
 914     case "${with_python}" in
 915     yes)
 916       AC_MSG_ERROR([python is missing or unusable])
 917       ;;
 918     auto)
 919       AC_MSG_WARN([python is missing or unusable; some features may be unavailable.])
 920       ;;
 921     *)
 922       AC_MSG_ERROR([no usable python found at ${with_python}])
 923       ;;
 924     esac
 925   else
 926     if test -n "${python_prefix}"; then
 927       AC_DEFINE_UNQUOTED(WITH_PYTHON_PATH, "${python_prefix}",
 928                          [Define if --with-python provides a path, either directly or via python-config.py --exec-prefix.])
 929       GDB_AC_DEFINE_RELOCATABLE(PYTHON_PATH, python, ${python_prefix})
 930     fi
 931   fi
 932 fi
 933
 934 if test "${have_libpython}" != no; then
 935   AC_DEFINE(HAVE_PYTHON, 1, [Define if Python interpreter is being linked in.])
 936   CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_PYTHON_OBS)"
 937   CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_PYTHON_DEPS)"
 938   CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_PYTHON_SRCS)"
 939   CONFIG_INSTALL="$CONFIG_INSTALL install-python"
 940   ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_PYTHON_CFLAGS)"
 941
 942   # Flags needed to compile Python code (taken from python-config --cflags).
 943   # We cannot call python-config directly because it will output whatever was
 944   # used when compiling the Python interpreter itself, including flags which
 945   # would make the python-related objects be compiled differently from the
 946   # rest of GDB (e.g., -O2 and -fPIC).
 947   if test "${GCC}" = yes; then
 948     tentative_python_cflags="-fno-strict-aliasing -fwrapv"
 949     # Python headers recommend -DNDEBUG, but it's unclear if that just
 950     # refers to building Python itself.  In release mode, though, it
 951     # doesn't hurt for the Python code in gdb to follow.
 952     $development || tentative_python_cflags="$tentative_python_cflags -DNDEBUG"
 953   fi
 954
 955   if test "x${tentative_python_cflags}" != x; then
 956     AC_MSG_CHECKING(compiler flags for python code)
 957     for flag in ${tentative_python_cflags}; do
 958       # Check that the compiler accepts it
 959       saved_CFLAGS="$CFLAGS"
 960       CFLAGS="$CFLAGS $flag"
 961       AC_TRY_COMPILE([],[],PYTHON_CFLAGS="${PYTHON_CFLAGS} $flag",)
 962       CFLAGS="$saved_CFLAGS"
 963     done
 964     AC_MSG_RESULT(${PYTHON_CFLAGS})
 965   fi
 966
 967   # On x64 Windows, Python's include headers, and pyconfig.h in
 968   # particular, rely on MS_WIN64 macro to detect that it's a 64bit
 969   # version of Windows.  Unfortunately, MS_WIN64 is only defined if
 970   # _MSC_VER, a Microsoft-specific macro, is defined.  So, when
 971   # building on x64 Windows with GCC, we define MS_WIN64 ourselves.
 972   # The issue was reported to the Python community, but still isn't
 973   # solved as of 2012-10-02 (http://bugs.python.org/issue4709).
 974
 975   case "$gdb_host" in
 976     mingw64)
 977            if test "${GCC}" = yes; then
 978              CPPFLAGS="$CPPFLAGS -DMS_WIN64"
 979            fi
 980            ;;
 981   esac
 982
 983   # Note that "python -m threading" cannot be used to check for
 984   # threading support due to a bug in Python 2.7.3
 985   # (http://bugs.python.org/issue15567).
 986   AC_MSG_CHECKING(whether python supports threads)
 987   saved_CPPFLAGS="${CPPFLAGS}"
 988   CPPFLAGS="${PYTHON_CPPFLAGS}"
 989   # Note that the test is reversed so that python_has_threads=yes on
 990   # unexpected failures.
 991   AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
 992 #include <Python.h>
 993 #ifdef WITH_THREAD
 994 # error
 995 #endif
 996   ]])], [python_has_threads=no], [python_has_threads=yes])
 997   AC_MSG_RESULT(${python_has_threads})
 998   CPPFLAGS="${saved_CPPFLAGS}"
 999 else
1000   # Even if Python support is not compiled in, we need to have this file
1001   # included so that the "python" command, et.al., still exists.
1002   CONFIG_OBS="$CONFIG_OBS python/python.o"
1003   CONFIG_SRCS="$CONFIG_SRCS python/python.c"
1004 fi
1005
1006 # Work around Python http://bugs.python.org/issue10112.  See also
1007 # http://bugs.python.org/issue11410, otherwise -Wl,--dynamic-list has
1008 # no effect.  Note that the only test after this that uses Python is
1009 # the -rdynamic/-Wl,--dynamic-list test, and we do want that one to be
1010 # run without -export-dynamic too.
1011 PYTHON_LIBS=`echo $PYTHON_LIBS | sed -e 's/-Xlinker -export-dynamic//'`
1012
1013 AC_SUBST(PYTHON_CFLAGS)
1014 AC_SUBST(PYTHON_CPPFLAGS)
1015 AC_SUBST(PYTHON_LIBS)
1016 AM_CONDITIONAL(HAVE_PYTHON, test "${have_libpython}" != no)
1017
1018 # -------------------- #
1019 # Check for libguile.  #
1020 # -------------------- #
1021
1022 dnl Utility to simplify finding libguile.
1023 dnl $1 = pkg-config-program
1024 dnl $2 = space-separate list of guile versions to try
1025 dnl $3 = yes|no, indicating whether to flag errors or ignore them
1026 dnl $4 = the shell variable to assign the result to
1027 dnl      If libguile is found we store "yes" here.
1028
1029 AC_DEFUN([AC_TRY_LIBGUILE],
1030 [
1031   pkg_config=$1
1032   guile_version_list=$2
1033   flag_errors=$3
1034   define([have_libguile_var],$4)
1035   found_usable_guile=checking
1036   AC_MSG_CHECKING([for usable guile from ${pkg_config}])
1037   for guile_version in ${guile_version_list}; do
1038     ${pkg_config} --exists ${guile_version} 2>/dev/null
1039     if test $? != 0; then
1040       continue
1041     fi
1042     dnl pkg-config says the package exists, so if we get an error now,
1043     dnl that's bad.
1044     new_CPPFLAGS=`${pkg_config} --cflags ${guile_version}`
1045     if test $? != 0; then
1046       AC_MSG_ERROR([failure running pkg-config --cflags ${guile_version}])
1047     fi
1048     new_LIBS=`${pkg_config} --libs ${guile_version}`
1049     if test $? != 0; then
1050       AC_MSG_ERROR([failure running pkg-config --libs ${guile_version}])
1051     fi
1052     dnl If we get this far, great.
1053     found_usable_guile=${guile_version}
1054     break
1055   done
1056   if test "${found_usable_guile}" = "checking"; then
1057     if test "${flag_errors}" = "yes"; then
1058       AC_MSG_ERROR([unable to find usable guile version from "${guile_version_list}"])
1059     else
1060       found_usable_guile=no
1061     fi
1062   fi
1063   dnl One final sanity check.
1064   dnl The user could have said --with-guile=python-2.7.
1065   if test "${found_usable_guile}" != no; then
1066     save_CPPFLAGS=$CPPFLAGS
1067     save_LIBS=$LIBS
1068     CPPFLAGS="$CPPFLAGS $new_CPPFLAGS"
1069     LIBS="$LIBS $new_LIBS"
1070     AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include "libguile.h"]],
1071                                    [[scm_init_guile ();]])],
1072                    [have_libguile_var=yes
1073                     GUILE_CPPFLAGS=$new_CPPFLAGS
1074                     GUILE_LIBS=$new_LIBS],
1075                    [found_usable_guile=no])
1076     dnl scm_set_automatic_finalization_enabled added in Guile 2.2.
1077     AC_CHECK_FUNC(scm_set_automatic_finalization_enabled,
1078       AC_DEFINE(HAVE_GUILE_MANUAL_FINALIZATION, 1,
1079                 [Define if Guile supports manual finalization.])
1080     )
1081     CPPFLAGS=$save_CPPFLAGS
1082     LIBS=$save_LIBS
1083     if test "${found_usable_guile}" = no; then
1084       if test "${flag_errors}" = yes; then
1085         AC_MSG_FAILURE([linking guile version ${guile_version} test program failed])
1086       fi
1087     fi
1088   fi
1089   AC_MSG_RESULT([${found_usable_guile}])
1090 ])
1091
1092 dnl There are several different values for --with-guile:
1093 dnl
1094 dnl no -   Don't include guile support.
1095 dnl yes -  Include guile support, error if it's missing.
1096 dnl        The pkg-config program must be in $PATH.
1097 dnl auto - Same as "yes", but if guile is missing from the system,
1098 dnl        fall back to "no".
1099 dnl guile-version [guile-version-choice-2 ...] -
1100 dnl        A space-separated list of guile package versions to try.
1101 dnl        These are passed to pkg-config as-is.
1102 dnl        E.g., guile-2.0 or guile-2.2-uninstalled
1103 dnl        This requires making sure PKG_CONFIG_PATH is set appropriately.
1104 dnl /path/to/pkg-config -
1105 dnl        Use this pkg-config program.
1106 dnl        NOTE: This needn't be the "real" pkg-config program.
1107 dnl        It could be a shell script.  It is invoked as:
1108 dnl        pkg-config --exists $version
1109 dnl        pkg-config --cflags $version
1110 dnl        pkg-config --libs $version
1111 dnl        pkg-config --variable guild $version
1112 dnl        The script will be called with $version having each value in
1113 dnl        $try_guile_versions until --exists indicates success.
1114
1115 AC_ARG_WITH(guile,
1116   AS_HELP_STRING([--with-guile@<:@=GUILE@:>@], [include guile support (auto/yes/no/<guile-version>/<pkg-config-program>)]),
1117   [], [with_guile=auto])
1118 AC_MSG_CHECKING([whether to use guile])
1119 AC_MSG_RESULT([$with_guile])
1120
1121 dnl We check guile with pkg-config.
1122 AC_PATH_PROG(pkg_config_prog_path, pkg-config, missing)
1123
1124 try_guile_versions="guile-2.0"
1125 have_libguile=no
1126 case "${with_guile}" in
1127 no)
1128   AC_MSG_WARN([guile support disabled; some features will be unavailable.])
1129   ;;
1130 auto)
1131   if test "${pkg_config_prog_path}" = "missing"; then
1132     AC_MSG_WARN([pkg-config not found, guile support disabled])
1133   else
1134     AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${try_guile_versions}, no, have_libguile)
1135   fi
1136   ;;
1137 yes)
1138   if test "${pkg_config_prog_path}" = "missing"; then
1139     AC_MSG_ERROR([pkg-config not found])
1140   fi
1141   AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${try_guile_versions}, yes, have_libguile)
1142   ;;
1143 [[\\/]]* | ?:[[\\/]]*)
1144   if test -x "${with_guile}"; then
1145     AC_TRY_LIBGUILE(${with_guile}, ${try_guile_versions}, yes, have_libguile)
1146   else
1147     AC_MSG_ERROR([Guile config program not executable: ${with_guile}])
1148   fi
1149   ;;
1150 "" | */*)
1151   # Disallow --with=guile="" and --with-guile=foo/bar.
1152   AC_MSG_ERROR([invalid value for --with-guile])
1153   ;;
1154 *)
1155   # A space separate list of guile versions to try, in order.
1156   if test "${pkg_config_prog_path}" = "missing"; then
1157     AC_MSG_ERROR([pkg-config not found])
1158   fi
1159   AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${with_guile}, yes, have_libguile)
1160   ;;
1161 esac
1162
1163 if test "${have_libguile}" != no; then
1164   dnl Get the name of the 'guild' program.
1165   case "${with_guile}" in
1166   [[\\/]]* | ?:[[\\/]]*)
1167     GDB_GUILE_PROGRAM_NAMES(["${with_guile}"], ["${guile_version}"])
1168     ;;
1169   *)
1170     GDB_GUILE_PROGRAM_NAMES(["${pkg_config_prog_path}"], ["${guile_version}"])
1171     ;;
1172   esac
1173
1174   dnl Make sure guild can handle this host.
1175   GDB_TRY_GUILD([$srcdir/guile/lib/gdb/support.scm])
1176   dnl If not, disable guile support.
1177   if test "$ac_cv_guild_ok" = no; then
1178     have_libguile=no
1179     AC_MSG_WARN(disabling guile support, $GUILD fails compiling for $host)
1180   fi
1181 fi
1182
1183 if test "${have_libguile}" != no; then
1184   AC_DEFINE(HAVE_GUILE, 1, [Define if Guile interpreter is being linked in.])
1185   CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_GUILE_OBS)"
1186   CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_GUILE_DEPS)"
1187   CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_GUILE_SRCS)"
1188   CONFIG_INSTALL="$CONFIG_INSTALL install-guile"
1189   ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_GUILE_CFLAGS)"
1190
1191   dnl The 'scm_new_smob' function appeared in Guile 2.0.6.
1192   save_LIBS="$LIBS"
1193   save_CPPFLAGS="$CPPFLAGS"
1194   LIBS="$GUILE_LIBS"
1195   CPPFLAGS="$GUILE_CPPFLAGS"
1196   AC_CHECK_FUNCS([scm_new_smob])
1197   LIBS="$save_LIBS"
1198   CPPFLAGS="$save_CPPFLAGS"
1199 else
1200   # Even if Guile support is not compiled in, we need to have these files
1201   # included.
1202   CONFIG_OBS="$CONFIG_OBS guile/guile.o"
1203   CONFIG_SRCS="$CONFIG_SRCS guile/guile.c"
1204 fi
1205 AC_SUBST(GUILE_CPPFLAGS)
1206 AC_SUBST(GUILE_LIBS)
1207 AM_CONDITIONAL(HAVE_GUILE, test "${have_libguile}" != no)
1208
1209 # ---------------------------- #
1210 # Check for source highlight.  #
1211 # ---------------------------- #
1212
1213 SRCHIGH_LIBS=
1214 SRCHIGH_CFLAGS=
1215
1216 AC_ARG_ENABLE(source-highlight,
1217   AS_HELP_STRING([--enable-source-highlight],
1218     [enable source-highlight for source listings]),
1219   [case "${enableval}" in
1220   yes)  enable_source_highlight=yes ;;
1221   no)   enable_source_highlight=no  ;;
1222   *)    AC_MSG_ERROR(bad value ${enableval} for source-highlight option) ;;
1223 esac],
1224 [enable_source_highlight=auto])
1225
1226 if test "${enable_source_highlight}" != "no"; then
1227   AC_MSG_CHECKING([for the source-highlight library])
1228   if test "${pkg_config_prog_path}" = "missing"; then
1229     AC_MSG_RESULT([no - pkg-config not found])
1230     if test "${enable_source_highlight}" = "yes"; then
1231       AC_MSG_ERROR([pkg-config was not found in your system])
1232     fi
1233   else
1234     if ${pkg_config_prog_path} --exists source-highlight; then
1235       SRCHIGH_CFLAGS=`${pkg_config_prog_path} --cflags source-highlight`
1236       SRCHIGH_LIBS=`${pkg_config_prog_path} --libs source-highlight`
1237       AC_DEFINE([HAVE_SOURCE_HIGHLIGHT], 1,
1238                 [Define to 1 if the source-highlight library is available])
1239       AC_MSG_RESULT([yes])
1240     else
1241       AC_MSG_RESULT([no])
1242       if test "${enable_source_highlight}" = "yes"; then
1243         AC_MSG_ERROR([source-highlight was not found in your system])
1244       fi
1245     fi
1246   fi
1247 fi
1248 AC_SUBST(SRCHIGH_LIBS)
1249 AC_SUBST(SRCHIGH_CFLAGS)
1250
1251 AC_ARG_WITH(intel_pt,
1252   AS_HELP_STRING([--with-intel-pt], [include Intel Processor Trace support (auto/yes/no)]),
1253   [], [with_intel_pt=auto])
1254 AC_MSG_CHECKING([whether to use intel pt])
1255 AC_MSG_RESULT([$with_intel_pt])
1256
1257 if test "${with_intel_pt}" = no; then
1258   AC_MSG_WARN([Intel Processor Trace support disabled; some features may be unavailable.])
1259   HAVE_LIBIPT=no
1260 else
1261   AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
1262 #include <linux/perf_event.h>
1263 #ifndef PERF_ATTR_SIZE_VER5
1264 # error
1265 #endif
1266   ]])], [perf_event=yes], [perf_event=no])
1267   if test "$perf_event" != yes; then
1268     if test "$with_intel_pt" = yes; then
1269       AC_MSG_ERROR([linux/perf_event.h missing or too old])
1270     else
1271       AC_MSG_WARN([linux/perf_event.h missing or too old; some features may be unavailable.])
1272     fi
1273   fi
1274
1275   AC_LIB_HAVE_LINKFLAGS([ipt], [], [#include "intel-pt.h"], [pt_insn_alloc_decoder (0);])
1276   if test "$HAVE_LIBIPT" != yes; then
1277     if test "$with_intel_pt" = yes; then
1278       AC_MSG_ERROR([libipt is missing or unusable])
1279     else
1280       AC_MSG_WARN([libipt is missing or unusable; some features may be unavailable.])
1281     fi
1282   else
1283     save_LIBS=$LIBS
1284     LIBS="$LIBS $LIBIPT"
1285     AC_CHECK_FUNCS(pt_insn_event)
1286     AC_CHECK_MEMBERS([struct pt_insn.enabled, struct pt_insn.resynced], [], [],
1287                      [#include <intel-pt.h>])
1288     LIBS=$save_LIBS
1289   fi
1290 fi
1291
1292 # ------------------------- #
1293 # Checks for header files.  #
1294 # ------------------------- #
1295
1296 AC_HEADER_STDC
1297 # elf_hp.h is for HP/UX 64-bit shared library support.
1298 AC_CHECK_HEADERS([nlist.h machine/reg.h poll.h sys/poll.h proc_service.h \
1299                   thread_db.h linux/elf.h \
1300                   sys/file.h sys/filio.h sys/ioctl.h sys/param.h \
1301                   sys/resource.h sys/procfs.h sys/ptrace.h ptrace.h \
1302                   sys/reg.h sys/debugreg.h sys/select.h \
1303                   termios.h elf_hp.h \
1304                   dlfcn.h])
1305 AC_CHECK_HEADERS(sys/user.h, [], [],
1306 [#if HAVE_SYS_PARAM_H
1307 # include <sys/param.h>
1308 #endif
1309 ])
1310
1311 AC_CHECK_HEADERS(curses.h cursesX.h ncurses.h ncursesw/ncurses.h ncurses/ncurses.h ncurses/term.h)
1312 AC_CHECK_HEADERS(term.h, [], [],
1313 [#if HAVE_CURSES_H
1314 # include <curses.h>
1315 #endif
1316 ])
1317
1318 # ------------------------- #
1319 # Checks for declarations.  #
1320 # ------------------------- #
1321
1322 libiberty_INIT
1323
1324 AC_CHECK_DECLS([snprintf])
1325 AM_LC_MESSAGES
1326
1327 # ----------------------- #
1328 # Checks for structures.  #
1329 # ----------------------- #
1330
1331 AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize])
1332
1333 # ------------------ #
1334 # Checks for types.  #
1335 # ------------------ #
1336
1337 AC_CHECK_TYPES(socklen_t, [], [],
1338 [#include <sys/types.h>
1339 #include <sys/socket.h>
1340 ])
1341
1342 # ------------------------------------- #
1343 # Checks for compiler characteristics.  #
1344 # ------------------------------------- #
1345
1346 AC_C_CONST
1347 AC_C_INLINE
1348 AC_C_BIGENDIAN
1349
1350 # ------------------------------ #
1351 # Checks for library functions.  #
1352 # ------------------------------ #
1353
1354 AC_FUNC_MMAP
1355 AC_FUNC_VFORK
1356 AC_CHECK_FUNCS([getauxval getrusage getuid getgid \
1357                 pipe poll pread pread64 pwrite resize_term \
1358                 sbrk getpgid setpgid setpgrp setsid \
1359                 sigaction sigprocmask sigsetmask socketpair \
1360                 ttrace wborder wresize setlocale iconvlist libiconvlist btowc \
1361                 setrlimit getrlimit posix_madvise waitpid \
1362                 ptrace64 sigaltstack setns use_default_colors])
1363 AM_LANGINFO_CODESET
1364 GDB_AC_COMMON
1365
1366 # Check the return and argument types of ptrace.
1367 GDB_AC_PTRACE
1368
1369 dnl AC_FUNC_SETPGRP does not work when cross compiling
1370 dnl Instead, assume we will have a prototype for setpgrp if cross compiling.
1371 if test "$cross_compiling" = no; then
1372   AC_FUNC_SETPGRP
1373 else
1374   AC_CACHE_CHECK([whether setpgrp takes no argument], ac_cv_func_setpgrp_void,
1375     [AC_TRY_COMPILE([
1376 #include <unistd.h>
1377 ], [
1378   if (setpgrp(1,1) == -1)
1379     exit (0);
1380   else
1381     exit (1);
1382 ], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes)])
1383 if test $ac_cv_func_setpgrp_void = yes; then
1384   AC_DEFINE(SETPGRP_VOID, 1)
1385 fi
1386 fi
1387
1388 # Assume we'll default to using the included libiberty regex.
1389 gdb_use_included_regex=yes
1390
1391 # However, if the system regex is GNU regex, then default to *not*
1392 # using the included regex.
1393 AC_CACHE_CHECK(
1394   [for GNU regex],
1395   [gdb_cv_have_gnu_regex],
1396   [AC_TRY_COMPILE(
1397     [#include <gnu-versions.h>],
1398     [#define REGEX_INTERFACE_VERSION 1
1399 #if _GNU_REGEX_INTERFACE_VERSION != REGEX_INTERFACE_VERSION
1400 # error "Version mismatch"
1401 #endif],
1402     gdb_cv_have_gnu_regex=yes,
1403     gdb_cv_have_gnu_regex=no)])
1404 if test $gdb_cv_have_gnu_regex = yes; then
1405   gdb_use_included_regex=no
1406 fi
1407
1408 AC_ARG_WITH(included-regex,
1409   AS_HELP_STRING([--without-included-regex], [don't use included regex; this is the default on systems with version 2 of the GNU C library (use with caution on other system)]),
1410   gdb_with_regex=$withval,
1411   gdb_with_regex=$gdb_use_included_regex)
1412 if test "$gdb_with_regex" = yes; then
1413   AC_DEFINE(USE_INCLUDED_REGEX, 1,
1414     [Define to 1 if the regex included in libiberty should be used.])
1415 fi
1416
1417 # Check if <sys/proc.h> defines `struct thread' with a td_pcb member.
1418 AC_CHECK_MEMBERS([struct thread.td_pcb], [], [],
1419 [#include <sys/param.h>
1420 #include <sys/proc.h>
1421 ])
1422
1423 # See if <sys/lwp.h> defines `struct lwp`.
1424 AC_CACHE_CHECK([for struct lwp], gdb_cv_struct_lwp,
1425 [AC_TRY_COMPILE([#include <sys/param.h>
1426 #define _KMEMUSER
1427 #include <sys/lwp.h>], [struct lwp l;],
1428 gdb_cv_struct_lwp=yes, gdb_cv_struct_lwp=no)])
1429 if test $gdb_cv_struct_lwp = yes; then
1430   AC_DEFINE(HAVE_STRUCT_LWP, 1,
1431             [Define to 1 if your system has struct lwp.])
1432 fi
1433
1434 # See if <machine/reg.h> degines `struct reg'.
1435 AC_CACHE_CHECK([for struct reg in machine/reg.h], gdb_cv_struct_reg,
1436 [AC_TRY_COMPILE([#include <sys/types.h>
1437 #include <machine/reg.h>], [struct reg r;],
1438 gdb_cv_struct_reg=yes, gdb_cv_struct_reg=no)])
1439 if test $gdb_cv_struct_reg = yes; then
1440   AC_DEFINE(HAVE_STRUCT_REG, 1,
1441             [Define to 1 if your system has struct reg in <machine/reg.h>.])
1442 fi
1443
1444 # See if <machine/reg.h> supports the %fs and %gs i386 segment registers.
1445 # Older i386 BSD's don't have the r_fs and r_gs members of `struct reg'.
1446 AC_CHECK_MEMBERS([struct reg.r_fs, struct reg.r_gs], [], [],
1447                  [#include <sys/types.h>
1448 #include <machine/reg.h>])
1449
1450 # See if <sys/user.h> supports the %fs_base and %gs_bas amd64 segment registers.
1451 # Older amd64 Linux's don't have the fs_base and gs_base members of
1452 # `struct user_regs_struct'.
1453 AC_CHECK_MEMBERS([struct user_regs_struct.fs_base, struct user_regs_struct.gs_base],
1454      [], [], [#include <sys/types.h>
1455 #include <sys/user.h>])
1456
1457 # See if <sys/ptrace.h> provides the PTRACE_GETREGS request.
1458 AC_MSG_CHECKING(for PTRACE_GETREGS)
1459 AC_CACHE_VAL(gdb_cv_have_ptrace_getregs,
1460 [AC_TRY_COMPILE([#include <sys/ptrace.h>],
1461                 [PTRACE_GETREGS;],
1462                 [gdb_cv_have_ptrace_getregs=yes],
1463                 [gdb_cv_have_ptrace_getregs=no])])
1464 AC_MSG_RESULT($gdb_cv_have_ptrace_getregs)
1465 if test $gdb_cv_have_ptrace_getregs = yes; then
1466   AC_DEFINE(HAVE_PTRACE_GETREGS, 1,
1467   [Define if sys/ptrace.h defines the PTRACE_GETREGS request.])
1468 fi
1469
1470 # See if <sys/ptrace.h> provides the PTRACE_GETFPXREGS request.
1471 AC_MSG_CHECKING(for PTRACE_GETFPXREGS)
1472 AC_CACHE_VAL(gdb_cv_have_ptrace_getfpxregs,
1473 [AC_TRY_COMPILE([#include <sys/ptrace.h>],
1474                 [PTRACE_GETFPXREGS;],
1475                 [gdb_cv_have_ptrace_getfpxregs=yes],
1476                 [gdb_cv_have_ptrace_getfpxregs=no])])
1477 AC_MSG_RESULT($gdb_cv_have_ptrace_getfpxregs)
1478 if test $gdb_cv_have_ptrace_getfpxregs = yes; then
1479   AC_DEFINE(HAVE_PTRACE_GETFPXREGS, 1,
1480   [Define if sys/ptrace.h defines the PTRACE_GETFPXREGS request.])
1481 fi
1482
1483 # See if <sys/ptrace.h> provides the PT_GETDBREGS request.
1484 AC_MSG_CHECKING(for PT_GETDBREGS)
1485 AC_CACHE_VAL(gdb_cv_have_pt_getdbregs,
1486 [AC_TRY_COMPILE([#include <sys/types.h>
1487 #include <sys/ptrace.h>],
1488                 [PT_GETDBREGS;],
1489                 [gdb_cv_have_pt_getdbregs=yes],
1490                 [gdb_cv_have_pt_getdbregs=no])])
1491 AC_MSG_RESULT($gdb_cv_have_pt_getdbregs)
1492 if test $gdb_cv_have_pt_getdbregs = yes; then
1493   AC_DEFINE(HAVE_PT_GETDBREGS, 1,
1494   [Define if sys/ptrace.h defines the PT_GETDBREGS request.])
1495 fi
1496
1497 # See if <sys/ptrace.h> provides the PT_GETXMMREGS request.
1498 AC_MSG_CHECKING(for PT_GETXMMREGS)
1499 AC_CACHE_VAL(gdb_cv_have_pt_getxmmregs,
1500 [AC_TRY_COMPILE([#include <sys/types.h>
1501 #include <sys/ptrace.h>],
1502                 [PT_GETXMMREGS;],
1503                 [gdb_cv_have_pt_getxmmregs=yes],
1504                 [gdb_cv_have_pt_getxmmregs=no])])
1505 AC_MSG_RESULT($gdb_cv_have_pt_getxmmregs)
1506 if test $gdb_cv_have_pt_getxmmregs = yes; then
1507   AC_DEFINE(HAVE_PT_GETXMMREGS, 1,
1508   [Define if sys/ptrace.h defines the PT_GETXMMREGS request.])
1509 fi
1510
1511 # See if <sys/ptrace.h> supports LWP names on FreeBSD
1512 # Older FreeBSD versions don't have the pl_tdname member of
1513 # `struct ptrace_lwpinfo'.
1514 AC_CHECK_MEMBERS([struct ptrace_lwpinfo.pl_tdname], [], [],
1515                  [#include <sys/ptrace.h>])
1516
1517 # See if <sys/ptrace.h> supports syscall fields on FreeBSD.  The
1518 # pl_syscall_code member of `struct ptrace_lwpinfo' was added in
1519 # FreeBSD 10.3.
1520 AC_CHECK_MEMBERS([struct ptrace_lwpinfo.pl_syscall_code], [], [],
1521                  [#include <sys/ptrace.h>])
1522
1523 if test "$ac_cv_header_sys_procfs_h" = yes; then
1524   BFD_HAVE_SYS_PROCFS_TYPE(gregset_t)
1525   BFD_HAVE_SYS_PROCFS_TYPE(fpregset_t)
1526   BFD_HAVE_SYS_PROCFS_TYPE(prgregset_t)
1527   BFD_HAVE_SYS_PROCFS_TYPE(prfpregset_t)
1528   BFD_HAVE_SYS_PROCFS_TYPE(prgregset32_t)
1529   BFD_HAVE_SYS_PROCFS_TYPE(lwpid_t)
1530   BFD_HAVE_SYS_PROCFS_TYPE(psaddr_t)
1531   BFD_HAVE_SYS_PROCFS_TYPE(elf_fpregset_t)
1532 fi
1533
1534 # Check if the compiler supports the `long long' type.
1535
1536 AC_CACHE_CHECK([for long long support in compiler], gdb_cv_c_long_long,
1537                [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1538 [[extern long long foo;]],
1539 [[switch (foo & 2) { case 0: return 1; }]])],
1540                                   gdb_cv_c_long_long=yes,
1541                                   gdb_cv_c_long_long=no)])
1542 if test $gdb_cv_c_long_long != yes; then
1543   # libdecnumber requires long long.
1544   AC_MSG_ERROR([Compiler must support long long for GDB.])
1545 fi
1546
1547 # Check if the compiler and runtime support printing long longs.
1548
1549 AC_CACHE_CHECK([for long long support in printf],
1550                gdb_cv_printf_has_long_long,
1551                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1552 [[char buf[32];
1553   long long l = 0;
1554   l = (l << 16) + 0x0123;
1555   l = (l << 16) + 0x4567;
1556   l = (l << 16) + 0x89ab;
1557   l = (l << 16) + 0xcdef;
1558   sprintf (buf, "0x%016llx", l);
1559   return (strcmp ("0x0123456789abcdef", buf));]])],
1560                               gdb_cv_printf_has_long_long=yes,
1561                               gdb_cv_printf_has_long_long=no,
1562                               gdb_cv_printf_has_long_long=no)])
1563 if test $gdb_cv_printf_has_long_long = yes; then
1564   AC_DEFINE(PRINTF_HAS_LONG_LONG, 1,
1565             [Define to 1 if the "%ll" format works to print long longs.])
1566 fi
1567
1568 # Check if the compiler and runtime support printing decfloats.
1569
1570 AC_CACHE_CHECK([for decfloat support in printf],
1571                gdb_cv_printf_has_decfloat,
1572                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1573 [[char buf[64];
1574   _Decimal32 d32 = 1.2345df;
1575   _Decimal64 d64 = 1.2345dd;
1576   _Decimal128 d128 = 1.2345dl;
1577   sprintf (buf, "Decimal32: %H\nDecimal64: %D\nDecimal128: %DD", d32, d64, d128);
1578   return (strcmp ("Decimal32: 1.2345\nDecimal64: 1.2345\nDecimal128: 1.2345", buf));]])],
1579                               gdb_cv_printf_has_decfloat=yes,
1580                               gdb_cv_printf_has_decfloat=no,
1581                               gdb_cv_printf_has_decfloat=no)])
1582 if test $gdb_cv_printf_has_decfloat = yes; then
1583   AC_DEFINE(PRINTF_HAS_DECFLOAT, 1,
1584             [Define to 1 if the "%H, %D and %DD" formats work to print decfloats.])
1585 fi
1586
1587 # Check if the compiler supports the `long double' type.  We can't use
1588 # AC_C_LONG_DOUBLE because that one does additional checks on the
1589 # constants defined in <float.h> that fail on some systems,
1590 # e.g. FreeBSD/i386 4.7 and OpenBSD/i386 3.6.
1591
1592 AC_CACHE_CHECK([for long double support in compiler], gdb_cv_c_long_double,
1593                [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[long double foo;]])],
1594                                   gdb_cv_c_long_double=yes,
1595                                   gdb_cv_c_long_double=no)])
1596 if test $gdb_cv_c_long_double = yes; then
1597   AC_DEFINE(HAVE_LONG_DOUBLE, 1,
1598            [Define to 1 if the compiler supports long double.])
1599 fi
1600
1601 # Check if the compiler and runtime support printing long doubles.
1602
1603 AC_CACHE_CHECK([for long double support in printf],
1604                gdb_cv_printf_has_long_double,
1605                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1606 [[char buf[16];
1607   long double f = 3.141592653;
1608   sprintf (buf, "%Lg", f);
1609   return (strncmp ("3.14159", buf, 7));]])],
1610                               gdb_cv_printf_has_long_double=yes,
1611                               gdb_cv_printf_has_long_double=no,
1612                               gdb_cv_printf_has_long_double=no)])
1613 if test $gdb_cv_printf_has_long_double = yes; then
1614   AC_DEFINE(PRINTF_HAS_LONG_DOUBLE, 1,
1615             [Define to 1 if the "%Lg" format works to print long doubles.])
1616 fi
1617
1618 # Check if the compiler and runtime support scanning long doubles.
1619
1620 AC_CACHE_CHECK([for long double support in scanf],
1621                gdb_cv_scanf_has_long_double,
1622                [AC_RUN_IFELSE([AC_LANG_PROGRAM(
1623 [[#include <stdio.h>]],
1624 [[char *buf = "3.141592653";
1625   long double f = 0;
1626   sscanf (buf, "%Lg", &f);
1627   return !(f > 3.14159 && f < 3.14160);]])],
1628                               gdb_cv_scanf_has_long_double=yes,
1629                               gdb_cv_scanf_has_long_double=no,
1630                               gdb_cv_scanf_has_long_double=no)])
1631 if test $gdb_cv_scanf_has_long_double = yes; then
1632   AC_DEFINE(SCANF_HAS_LONG_DOUBLE, 1,
1633             [Define to 1 if the "%Lg" format works to scan long doubles.])
1634 fi
1635
1636 case ${host_os} in
1637 aix*)
1638   AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
1639     SAVE_LDFLAGS=$LDFLAGS
1640
1641     case $GCC in
1642     yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
1643     *) gdb_cv_bigtoc=-bbigtoc ;;
1644     esac
1645
1646     LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
1647     AC_TRY_LINK([], [int i;], [], [gdb_cv_bigtoc=])
1648     LDFLAGS="${SAVE_LDFLAGS}"
1649   ])
1650   CONFIG_LDFLAGS="${CONFIG_LDFLAGS} ${gdb_cv_bigtoc}"
1651   ;;
1652 esac
1653
1654 AC_MSG_CHECKING(for the dynamic export flag)
1655 dynamic_list=false
1656 if test "${gdb_native}" = yes; then
1657    # The dynamically loaded libthread_db needs access to symbols in the gdb
1658    # executable.  Older GNU ld supports --export-dynamic but --dynamic-list
1659    # may not be supported there.
1660    old_LDFLAGS="$LDFLAGS"
1661    # Older GNU ld supports --export-dynamic but --dynamic-list it does not.
1662    RDYNAMIC="-Wl,--dynamic-list=${srcdir}/proc-service.list"
1663    LDFLAGS="$LDFLAGS $RDYNAMIC"
1664    if test "${have_libpython}" = no; then
1665      AC_TRY_LINK([], [], [dynamic_list=true])
1666    else
1667      # Workaround http://bugs.python.org/issue4434 where static
1668      # libpythonX.Y.a would get its symbols required for
1669      # pythonX.Y/lib-dynload/*.so modules hidden by -Wl,--dynamic-list.
1670      # Problem does not happen for the recommended libpythonX.Y.so linkage.
1671
1672      # Note the workaround for Python
1673      # http://bugs.python.org/issue10112 earlier has removed
1674      # -export-dynamic from PYTHON_LIBS.  That's exactly what we want
1675      # here too, as otherwise it'd make this -Wl,--dynamic-list test
1676      # always pass.
1677      old_CFLAGS="$CFLAGS"
1678      CFLAGS="$CFLAGS $PYTHON_CFLAGS"
1679      old_LIBS="$LIBS"
1680      LIBS="$LIBS $PYTHON_LIBS"
1681      old_CPPFLAGS="$CPPFLAGS"
1682      CPPFLAGS="$CPPFLAGS $PYTHON_CPPFLAGS"
1683      AC_RUN_IFELSE(
1684        [AC_LANG_PROGRAM(
1685          [#include "Python.h"],
1686          [int err;
1687           Py_Initialize ();
1688           err = PyRun_SimpleString ("import itertools\n");
1689           Py_Finalize ();
1690           return err == 0 ? 0 : 1;])],
1691        [dynamic_list=true], [], [true])
1692      LIBS="$old_LIBS"
1693      CFLAGS="$old_CFLAGS"
1694      CPPFLAGS="$old_CPPFLAGS"
1695    fi
1696    LDFLAGS="$old_LDFLAGS"
1697 fi
1698 if $dynamic_list; then
1699   found="-Wl,--dynamic-list"
1700   RDYNAMIC='-Wl,--dynamic-list=$(srcdir)/proc-service.list'
1701 else
1702   found="-rdynamic"
1703   RDYNAMIC="-rdynamic"
1704 fi
1705 AC_SUBST(RDYNAMIC)
1706 AC_MSG_RESULT($found)
1707
1708 dnl For certain native configurations, we need to check whether thread
1709 dnl support can be built in or not.
1710 dnl
1711 dnl Note that we only want this if we are both native (host == target),
1712 dnl and not doing a canadian cross build (build == host).
1713
1714 if test ${build} = ${host} -a ${host} = ${target} ; then
1715    case ${host_os} in
1716    aix*)
1717       AC_MSG_CHECKING(for AiX thread debugging library)
1718       AC_CACHE_VAL(gdb_cv_have_aix_thread_debug,
1719                    [AC_TRY_COMPILE([#include <sys/pthdebug.h>],
1720                                    [#ifndef PTHDB_VERSION_3
1721                                     #error
1722                                     #endif],
1723                                    gdb_cv_have_aix_thread_debug=yes,
1724                                    gdb_cv_have_aix_thread_debug=no)])
1725       AC_MSG_RESULT($gdb_cv_have_aix_thread_debug)
1726       if test $gdb_cv_have_aix_thread_debug = yes; then
1727          CONFIG_SRCS="${CONFIG_SRCS} aix-thread.c"
1728          CONFIG_OBS="${CONFIG_OBS} aix-thread.o"
1729          LIBS="$LIBS -lpthdebug"
1730
1731          # Older versions of AIX do not provide the declaration for
1732          # the getthrds function (it appears that it was introduced
1733          # with AIX 6.x).
1734          AC_CHECK_DECLS(getthrds, [], [], [[#include <procinfo.h>]])
1735       fi
1736       ;;
1737    esac
1738    AC_SUBST(CONFIG_LDFLAGS)
1739 fi
1740
1741 dnl See if we have a thread_db header file that has TD_NOTALLOC and
1742 dnl other error codes.
1743 if test "x$ac_cv_header_thread_db_h" = "xyes"; then
1744    AC_CACHE_CHECK([whether <thread_db.h> has TD_NOTALLOC],
1745                   gdb_cv_thread_db_h_has_td_notalloc,
1746      AC_TRY_COMPILE(
1747        [#include <thread_db.h>],
1748        [int i = TD_NOTALLOC;],
1749        gdb_cv_thread_db_h_has_td_notalloc=yes,
1750        gdb_cv_thread_db_h_has_td_notalloc=no
1751      )
1752    )
1753    AC_CACHE_CHECK([whether <thread_db.h> has TD_VERSION],
1754                   gdb_cv_thread_db_h_has_td_version,
1755      AC_TRY_COMPILE(
1756        [#include <thread_db.h>],
1757        [int i = TD_VERSION;],
1758        gdb_cv_thread_db_h_has_td_version=yes,
1759        gdb_cv_thread_db_h_has_td_version=no
1760      )
1761    )
1762    AC_CACHE_CHECK([whether <thread_db.h> has TD_NOTLS],
1763                   gdb_cv_thread_db_h_has_td_notls,
1764      AC_TRY_COMPILE(
1765        [#include <thread_db.h>],
1766        [int i = TD_NOTLS;],
1767        gdb_cv_thread_db_h_has_td_notls=yes,
1768        gdb_cv_thread_db_h_has_td_notls=no
1769      )
1770    )
1771 fi
1772 if test "x$gdb_cv_thread_db_h_has_td_notalloc" = "xyes"; then
1773   AC_DEFINE(THREAD_DB_HAS_TD_NOTALLOC, 1,
1774             [Define if <thread_db.h> has the TD_NOTALLOC error code.])
1775 fi
1776 if test "x$gdb_cv_thread_db_h_has_td_version" = "xyes"; then
1777   AC_DEFINE(THREAD_DB_HAS_TD_VERSION, 1,
1778             [Define if <thread_db.h> has the TD_VERSION error code.])
1779 fi
1780 if test "x$gdb_cv_thread_db_h_has_td_notls" = "xyes"; then
1781   AC_DEFINE(THREAD_DB_HAS_TD_NOTLS, 1,
1782             [Define if <thread_db.h> has the TD_NOTLS error code.])
1783 fi
1784
1785 dnl Check if we can disable the virtual address space randomization.
1786 dnl The functionality of setarch -R.
1787 AC_CHECK_DECLS([ADDR_NO_RANDOMIZE],,, [#include <sys/personality.h>])
1788 define([PERSONALITY_TEST], [AC_LANG_PROGRAM([#include <sys/personality.h>], [
1789 #      if !HAVE_DECL_ADDR_NO_RANDOMIZE
1790 #       define ADDR_NO_RANDOMIZE 0x0040000
1791 #      endif
1792        /* Test the flag could be set and stays set.  */
1793        personality (personality (0xffffffff) | ADDR_NO_RANDOMIZE);
1794        if (!(personality (personality (0xffffffff)) & ADDR_NO_RANDOMIZE))
1795            return 1])])
1796 AC_RUN_IFELSE([PERSONALITY_TEST],
1797               [have_personality=true],
1798               [have_personality=false],
1799               [AC_LINK_IFELSE([PERSONALITY_TEST],
1800                               [have_personality=true],
1801                               [have_personality=false])])
1802 if $have_personality
1803 then
1804     AC_DEFINE([HAVE_PERSONALITY], 1,
1805               [Define if you support the personality syscall.])
1806 fi
1807
1808 dnl Set the host's .gdbinit filename.
1809 case $host_os in
1810   go32* | *djgpp*)
1811     gdbinit=gdb.ini
1812     ;;
1813   *)
1814     gdbinit=.gdbinit
1815     ;;
1816 esac
1817 AC_DEFINE_UNQUOTED(GDBINIT,"$gdbinit",[The .gdbinit filename.])
1818
1819 dnl Handle optional features that can be enabled.
1820
1821 # Support for --with-sysroot is a copy of GDB_AC_WITH_DIR,
1822 # except that the argument to --with-sysroot is optional.
1823 # --with-sysroot (or --with-sysroot=yes) sets the default sysroot path.
1824 if test "x$with_sysroot" = xyes; then
1825   with_sysroot="${exec_prefix}/${target_alias}/sys-root"
1826 fi
1827 AC_ARG_WITH(sysroot,
1828   AS_HELP_STRING([--with-sysroot@<:@=DIR@:>@],
1829                  [search for usr/lib et al within DIR]),
1830   [TARGET_SYSTEM_ROOT=$withval], [TARGET_SYSTEM_ROOT=])
1831 AC_DEFINE_DIR(TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT,
1832               [search for usr/lib et al within DIR])
1833 AC_SUBST(TARGET_SYSTEM_ROOT)
1834 GDB_AC_DEFINE_RELOCATABLE(TARGET_SYSTEM_ROOT, sysroot, ${ac_define_dir})
1835
1836 GDB_AC_WITH_DIR(SYSTEM_GDBINIT, system-gdbinit,
1837     [automatically load a system-wide gdbinit file],
1838     [])
1839
1840 AM_GDB_WARNINGS
1841 AM_GDB_UBSAN
1842
1843 # In the Cygwin environment, we need some additional flags.
1844 AC_CACHE_CHECK([for cygwin], gdb_cv_os_cygwin,
1845 [AC_EGREP_CPP(^lose$, [
1846 #if defined (__CYGWIN__) || defined (__CYGWIN32__)
1847 lose
1848 #endif],[gdb_cv_os_cygwin=yes],[gdb_cv_os_cygwin=no])])
1849
1850
1851 dnl Figure out which of the many generic ser-*.c files the _host_ supports.
1852 SER_HARDWIRE="ser-base.o ser-unix.o ser-pipe.o ser-tcp.o"
1853 case ${host} in
1854   *go32* ) SER_HARDWIRE=ser-go32.o ;;
1855   *djgpp* ) SER_HARDWIRE=ser-go32.o ;;
1856   *mingw32*) SER_HARDWIRE="ser-base.o ser-tcp.o ser-mingw.o" ;;
1857   *) SER_HARDWIRE="$SER_HARDWIRE ser-uds.o" ;;
1858 esac
1859 AC_SUBST(SER_HARDWIRE)
1860
1861 # libreadline needs libuser32.a in a cygwin environment
1862 WIN32LIBS=
1863 if test x$gdb_cv_os_cygwin = xyes; then
1864     WIN32LIBS="-luser32"
1865     case "${target}" in
1866         *cygwin*) WIN32LIBS="$WIN32LIBS -limagehlp"
1867         ;;
1868     esac
1869 fi
1870
1871 # The ser-tcp.c module requires sockets.
1872 case ${host} in
1873   *mingw32*)
1874     AC_DEFINE(USE_WIN32API, 1,
1875               [Define if we should use the Windows API, instead of the
1876                POSIX API.  On Windows, we use the Windows API when
1877                building for MinGW, but the POSIX API when building
1878                for Cygwin.])
1879     WIN32LIBS="$WIN32LIBS -lws2_32"
1880     ;;
1881 esac
1882 AC_SUBST(WIN32LIBS)
1883
1884 # Add ELF support to GDB, but only if BFD includes ELF support.
1885 GDB_AC_CHECK_BFD([for ELF support in BFD], gdb_cv_var_elf,
1886                  [bfd_get_elf_phdr_upper_bound (NULL)], elf-bfd.h)
1887 if test $gdb_cv_var_elf = yes; then
1888   CONFIG_OBS="$CONFIG_OBS elfread.o stap-probe.o dtrace-probe.o"
1889   AC_DEFINE(HAVE_ELF, 1,
1890             [Define if ELF support should be included.])
1891   # -ldl is provided by bfd/Makfile.am (LIBDL) <PLUGINS>.
1892   if test "$plugins" = "yes"; then
1893     AC_SEARCH_LIBS(dlopen, dl)
1894   fi
1895 fi
1896
1897 # Add macho support to GDB, but only if BFD includes it.
1898 GDB_AC_CHECK_BFD([for Mach-O support in BFD], gdb_cv_var_macho,
1899                  [bfd_mach_o_lookup_command (NULL, 0, NULL)], mach-o.h)
1900 if test $gdb_cv_var_macho = yes; then
1901   CONFIG_OBS="$CONFIG_OBS machoread.o"
1902 fi
1903
1904 # Add any host-specific objects to GDB.
1905 CONFIG_OBS="${CONFIG_OBS} ${gdb_host_obs}"
1906
1907 # If building on ELF, look for lzma support for embedded compressed debug info.
1908 if test $gdb_cv_var_elf = yes; then
1909   AC_ARG_WITH(lzma,
1910     AS_HELP_STRING([--with-lzma], [support lzma compression (auto/yes/no)]),
1911     [], [with_lzma=auto])
1912   AC_MSG_CHECKING([whether to use lzma])
1913   AC_MSG_RESULT([$with_lzma])
1914
1915   if test "${with_lzma}" != no; then
1916     AC_LIB_HAVE_LINKFLAGS([lzma], [], [#include "lzma.h"],
1917                           [lzma_index_iter iter;
1918                            lzma_index_iter_init (&iter, 0);
1919                            lzma_mf_is_supported (LZMA_MF_HC3);])
1920     if test "$HAVE_LIBLZMA" != yes; then
1921       if test "$with_lzma" = yes; then
1922         AC_MSG_ERROR([missing liblzma for --with-lzma])
1923       fi
1924     fi
1925   fi
1926 fi
1927
1928 LIBGUI="../libgui/src/libgui.a"
1929 GUI_CFLAGS_X="-I${srcdir}/../libgui/src"
1930 AC_SUBST(LIBGUI)
1931 AC_SUBST(GUI_CFLAGS_X)
1932
1933 WIN32LDAPP=
1934 AC_SUBST(WIN32LIBS)
1935 AC_SUBST(WIN32LDAPP)
1936
1937 case "${host}" in
1938 *-*-cygwin* | *-*-mingw* )
1939     configdir="win"
1940     ;;
1941 *)
1942     configdir="unix"
1943     ;;
1944 esac
1945
1946 GDBTKLIBS=
1947 if test "${enable_gdbtk}" = "yes"; then
1948
1949     # Gdbtk must have an absolute path to srcdir in order to run
1950     # properly when not installed.
1951     here=`pwd`
1952     cd ${srcdir}
1953     GDBTK_SRC_DIR=`pwd`
1954     cd $here
1955
1956     SC_PATH_TCLCONFIG
1957
1958     # If $no_tk is nonempty, then we can't do Tk, and there is no
1959     # point to doing Tcl.
1960     SC_PATH_TKCONFIG
1961
1962     if test -z "${no_tcl}" -a -z "${no_tk}"; then
1963         SC_LOAD_TCLCONFIG
1964
1965         # Check for in-tree tcl
1966         here=`pwd`
1967         cd ${srcdir}/..
1968         topdir=`pwd`
1969         cd ${here}
1970
1971         intree="no"
1972         if test "${TCL_SRC_DIR}" = "${topdir}/tcl"; then
1973           intree="yes"
1974         fi
1975
1976         # Find Tcl private headers
1977         if test x"${intree}" = xno; then
1978           CY_AC_TCL_PRIVATE_HEADERS
1979           TCL_INCLUDE="${TCL_INCLUDE_SPEC} ${TCL_PRIVATE_INCLUDE}"
1980           TCL_LIBRARY="${TCL_LIB_SPEC}"
1981           TCL_DEPS=""
1982         else
1983           # If building tcl in the same src tree, private headers
1984           # are not needed, but we need to be sure to use the right
1985           # headers library
1986           TCL_INCLUDE="-I${TCL_SRC_DIR}/generic"
1987           TCL_LIBRARY="${TCL_BUILD_LIB_SPEC}"
1988           TCL_DEPS="../tcl/${configdir}${TCL_LIB_FILE}"
1989         fi
1990         AC_SUBST(TCL_INCLUDE)
1991         AC_SUBST(TCL_LIBRARY)
1992         AC_SUBST(TCL_DEPS)
1993
1994         SC_LOAD_TKCONFIG
1995
1996         # Check for in-tree Tk
1997         intree="no"
1998         if test "${TK_SRC_DIR}" = "${topdir}/tk"; then
1999           intree="yes"
2000         fi
2001
2002         # Find Tk private headers
2003         if test x"${intree}" = xno; then
2004           CY_AC_TK_PRIVATE_HEADERS
2005           TK_INCLUDE="${TK_INCLUDE_SPEC} ${TK_PRIVATE_INCLUDE}"
2006           TK_LIBRARY=${TK_LIB_SPEC}
2007           TK_DEPS=""
2008         else
2009           TK_INCLUDE="-I${TK_SRC_DIR}/generic"
2010           TK_LIBRARY="${TK_BUILD_LIB_SPEC}"
2011           TK_DEPS="../tk/${configdir}/${TK_LIB_FILE}"
2012         fi
2013         AC_SUBST(TK_INCLUDE)
2014         AC_SUBST(TK_LIBRARY)
2015         AC_SUBST(TK_DEPS)
2016         AC_SUBST(TK_XINCLUDES)
2017
2018         ENABLE_CFLAGS="${ENABLE_CFLAGS} \$(SUBDIR_GDBTK_CFLAGS)"
2019
2020         # Include some libraries that Tcl and Tk want.
2021         TCL_LIBS='$(LIBGUI) $(TK) $(TCL) $(X11_LDFLAGS) $(X11_LIBS)'
2022         # Yes, the ordering seems wrong here.  But it isn't.
2023         # TK_LIBS is the list of libraries that need to be linked
2024         # after Tcl/Tk.  Note that this isn't put into LIBS.  If it
2025         # were in LIBS then any link tests after this point would
2026         # try to include things like `$(LIBGUI)', which wouldn't work.
2027         GDBTKLIBS="${TCL_LIBS} ${TK_LIBS}"
2028
2029         CONFIG_OBS="${CONFIG_OBS} \$(SUBDIR_GDBTK_OBS)"
2030         CONFIG_DEPS="${CONFIG_DEPS} \$(SUBDIR_GDBTK_DEPS)"
2031         CONFIG_SRCS="${CONFIG_SRCS} \$(SUBDIR_GDBTK_SRCS)"
2032         CONFIG_ALL="${CONFIG_ALL} all-gdbtk"
2033         CONFIG_CLEAN="${CONFIG_CLEAN} clean-gdbtk"
2034         CONFIG_INSTALL="${CONFIG_INSTALL} install-gdbtk"
2035         CONFIG_UNINSTALL="${CONFIG_UNINSTALL} uninstall-gdbtk"
2036
2037         if test x$gdb_cv_os_cygwin = xyes; then
2038           WIN32LIBS="${WIN32LIBS} -lshell32 -lgdi32 -lcomdlg32 -ladvapi32"
2039           WIN32LDAPP="-Wl,--subsystem,console"
2040           CONFIG_OBS="${CONFIG_OBS} gdbres.o"
2041         fi
2042
2043         AC_CONFIG_SUBDIRS(gdbtk)
2044     fi
2045 fi
2046
2047 AC_SUBST(X_CFLAGS)
2048 AC_SUBST(X_LDFLAGS)
2049 AC_SUBST(X_LIBS)
2050 AC_SUBST(GDBTKLIBS)
2051 AC_SUBST(GDBTK_CFLAGS)
2052 AC_SUBST(GDBTK_SRC_DIR)
2053
2054 AC_PATH_X
2055
2056 # Unlike the sim directory, whether a simulator is linked is controlled by
2057 # presence of a gdb_sim definition in the target configure.tgt entry.
2058 # This code just checks for a few cases where we'd like to ignore those
2059 # definitions, even when they're present in the '.mt' file.  These cases
2060 # are when --disable-sim is specified, or if the simulator directory is
2061 # not part of the source tree.
2062 #
2063 AC_ARG_ENABLE(sim,
2064 AS_HELP_STRING([--enable-sim], [link gdb with simulator]),
2065 [echo "enable_sim = $enable_sim";
2066  echo "enableval = ${enableval}";
2067  case "${enableval}" in
2068   yes) ignore_sim=false ;;
2069   no)  ignore_sim=true ;;
2070   *)   ignore_sim=false ;;
2071  esac],
2072 [ignore_sim=false])
2073
2074 if test ! -d "${srcdir}/../sim"; then
2075   ignore_sim=true
2076 fi
2077
2078 SIM=
2079 SIM_OBS=
2080 if test "${ignore_sim}" = "false"; then
2081   if test x"${gdb_sim}" != x ; then
2082     SIM="${gdb_sim}"
2083     SIM_OBS="remote-sim.o"
2084     AC_DEFINE(WITH_SIM, 1, [Define if the simulator is being linked in.])
2085
2086     # Some tdep code should only be compiled in when the ppc sim is
2087     # built.  PR sim/13418.
2088     case $target in
2089       powerpc*-*-*)
2090         AC_DEFINE(WITH_PPC_SIM, 1, [Define if the PPC simulator is being linked in.])
2091         ;;
2092     esac
2093   fi
2094 fi
2095 AC_SUBST(SIM)
2096 AC_SUBST(SIM_OBS)
2097
2098 AC_SUBST(ENABLE_CFLAGS)
2099 AC_SUBST(PROFILE_CFLAGS)
2100
2101 AC_SUBST(CONFIG_OBS)
2102 AC_SUBST(CONFIG_DEPS)
2103 AC_SUBST(CONFIG_SRCS)
2104 AC_SUBST(CONFIG_ALL)
2105 AC_SUBST(CONFIG_CLEAN)
2106 AC_SUBST(CONFIG_INSTALL)
2107 AC_SUBST(CONFIG_UNINSTALL)
2108
2109 # List of host floatformats.
2110 AC_DEFINE_UNQUOTED(GDB_HOST_FLOAT_FORMAT,$gdb_host_float_format,[Host float floatformat])
2111 AC_DEFINE_UNQUOTED(GDB_HOST_DOUBLE_FORMAT,$gdb_host_double_format,[Host double floatformat])
2112 AC_DEFINE_UNQUOTED(GDB_HOST_LONG_DOUBLE_FORMAT,$gdb_host_long_double_format,[Host long double floatformat])
2113
2114 # target_subdir is used by the testsuite to find the target libraries.
2115 target_subdir=
2116 if test "${host}" != "${target}"; then
2117     target_subdir="${target_alias}/"
2118 fi
2119 AC_SUBST(target_subdir)
2120
2121 # Import nat definitions.
2122 nat_makefile_frag=/dev/null
2123 if test "${gdb_native}" = "yes"; then
2124   . ${srcdir}/configure.nat
2125   nativefile=$NAT_FILE
2126 fi
2127
2128 AC_SUBST(NAT_FILE)
2129 AC_SUBST(NATDEPFILES)
2130 AC_SUBST(NAT_CDEPS)
2131 AC_SUBST(LOADLIBES)
2132 AC_SUBST(MH_CFLAGS)
2133 AC_SUBST(XM_CLIBS)
2134 AC_SUBST(NAT_GENERATED_FILES)
2135 AC_SUBST(HAVE_NATIVE_GCORE_HOST)
2136 AC_SUBST_FILE(nat_makefile_frag)
2137
2138 if test x"${gdb_osabi}" != x ; then
2139     AC_DEFINE_UNQUOTED(GDB_OSABI_DEFAULT, $gdb_osabi,
2140                        [Define to the default OS ABI for this configuration.])
2141 fi
2142
2143 AC_ARG_ENABLE(gdbserver,
2144 AS_HELP_STRING([--enable-gdbserver],
2145                [automatically build gdbserver (yes/no/auto, default is auto)]),
2146 [case "${enableval}" in
2147   yes| no|auto) ;;
2148   *) AC_MSG_ERROR(bad value ${enableval} for --enable-gdbserver option) ;;
2149 esac],[enable_gdbserver=auto])
2150
2151 # We only build gdbserver automatically in a native configuration, and
2152 # only if the user did not explicitly disable its build.
2153 if test "$gdb_native" = "yes" -a "$enable_gdbserver" != "no"; then
2154   AC_MSG_CHECKING(whether gdbserver is supported on this host)
2155   if test "x$build_gdbserver" = xyes; then
2156     AC_MSG_RESULT(yes)
2157     AC_CONFIG_SUBDIRS(gdbserver)
2158     gdbserver_build_enabled=yes
2159   else
2160     AC_MSG_RESULT(no)
2161   fi
2162 fi
2163
2164 # If the user explicitly request the gdbserver to be built, verify that
2165 # we were in fact able to enable it.
2166 if test "$enable_gdbserver" = "yes" -a "$gdbserver_build_enabled" != "yes"; then
2167   AC_MSG_ERROR(Automatic gdbserver build is not supported for this configuration)
2168 fi
2169
2170 # Check for babeltrace and babeltrace-ctf
2171 AC_ARG_WITH(babeltrace,
2172   AC_HELP_STRING([--with-babeltrace], [include babeltrace support (auto/yes/no)]),
2173   [], [with_babeltrace=auto])
2174 AC_MSG_CHECKING([whether to use babeltrace])
2175 AC_MSG_RESULT([$with_babeltrace])
2176
2177 if test "x$with_babeltrace" = "xno"; then
2178   AC_MSG_WARN([babletrace support disabled; GDB is unable to read CTF data.])
2179 else
2180   # Append -Werror to CFLAGS so that configure can catch the warning
2181   # "assignment from incompatible pointer type", which is related to
2182   # the babeltrace change from 1.0.3 to 1.1.0.  Babeltrace 1.1.0 works
2183   # in GDB, while babeltrace 1.0.3 is broken.
2184   # AC_LIB_HAVE_LINKFLAGS may modify CPPFLAGS in it, so it should be
2185   # safe to save and restore CFLAGS here.
2186   saved_CFLAGS=$CFLAGS
2187   CFLAGS="$CFLAGS -Werror"
2188   AC_LIB_HAVE_LINKFLAGS([babeltrace], [babeltrace-ctf],
2189                         [#include <babeltrace/babeltrace.h>
2190                          #include <babeltrace/ctf/events.h>
2191                          #include <babeltrace/ctf/iterator.h>],
2192                         [struct bt_iter_pos *pos = bt_iter_get_pos (bt_ctf_get_iter (NULL));
2193                         struct bt_ctf_event *event = NULL;
2194                         const struct bt_definition *scope;
2195
2196                         pos->type = BT_SEEK_BEGIN;
2197                         bt_iter_set_pos (bt_ctf_get_iter (NULL), pos);
2198                         scope = bt_ctf_get_top_level_scope (event,
2199                                                            BT_STREAM_EVENT_HEADER);
2200                         bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id"));
2201                         ])
2202   CFLAGS=$saved_CFLAGS
2203
2204   if test "$HAVE_LIBBABELTRACE" != yes; then
2205      if test "$with_babeltrace" = yes; then
2206        AC_MSG_ERROR([babeltrace is missing or unusable])
2207      else
2208        AC_MSG_WARN([babeltrace is missing or unusable; GDB is unable to read CTF data.])
2209      fi
2210   fi
2211 fi
2212
2213 # If nativefile (NAT_FILE) is not set in configure.nat, we link to an
2214 # empty version.
2215
2216 files=
2217 links=
2218
2219 rm -f nm.h
2220 if test "${nativefile}" != ""; then
2221     case "${nativefile}" in
2222       nm-*.h ) GDB_NM_FILE="config/${gdb_host_cpu}/${nativefile}" ;;
2223       * ) GDB_NM_FILE="${nativefile}"
2224     esac
2225     files="${files} ${GDB_NM_FILE}"
2226     links="${links} nm.h"
2227     AC_DEFINE_UNQUOTED(GDB_NM_FILE, "${GDB_NM_FILE}", [nativefile])
2228 fi
2229 AC_SUBST(GDB_NM_FILE)
2230
2231 dnl Add dependency for xsltproc if building with maintainer-mode enabled.
2232 AC_PATH_PROGS(XSLTPROC, xsltproc, missing)
2233 if test "x$USE_MAINTAINER_MODE" = xyes; then
2234   if test "${XSLTPROC}" = missing; then
2235     AC_ERROR(unable to find xsltproc.  maintainer-mode requires xsltproc.)
2236   fi
2237 fi
2238 AC_SUBST(XSLTPROC)
2239
2240 AC_LINK_FILES($files, $links)
2241
2242 dnl Check for exe extension set on certain hosts (e.g. Win32)
2243 AC_EXEEXT
2244
2245 dnl  Detect the character set used by this host.
2246 dnl  At the moment, we just assume it's UTF-8.
2247 AC_DEFINE(GDB_DEFAULT_HOST_CHARSET, "UTF-8",
2248           [Define to be a string naming the default host character set.])
2249
2250 GDB_AC_SELFTEST([
2251   CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_UNITTESTS_OBS) gdbsupport/selftest.o selftest-arch.o"
2252   CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_UNITTESTS_SRCS) gdbsupport/selftest.c selftest-arch.c"
2253 ])
2254
2255 GDB_AC_TRANSFORM([gdb], [GDB_TRANSFORM_NAME])
2256 GDB_AC_TRANSFORM([gcore], [GCORE_TRANSFORM_NAME])
2257 AC_CONFIG_FILES([gcore], [chmod +x gcore])
2258 AC_CONFIG_FILES([Makefile gdb-gdb.gdb gdb-gdb.py doc/Makefile data-directory/Makefile],
2259 [
2260 case x$CONFIG_HEADERS in
2261 xconfig.h:config.in)
2262 echo > stamp-h ;;
2263 esac
2264 ])
2265
2266 AC_OUTPUT