gdb/configure.ac

   1 dnl Autoconf configure script for GDB, the GNU debugger.
   2 dnl Copyright (C) 1995-2018 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 . $srcdir/../bfd/development.sh
  27
  28 AC_PROG_CC
  29 AC_PROG_CXX
  30
  31 AC_USE_SYSTEM_EXTENSIONS
  32 ACX_LARGEFILE
  33 AM_PROG_CC_STDC
  34 AM_PROG_INSTALL_STRIP
  35
  36 AC_CONFIG_AUX_DIR(..)
  37 AC_CANONICAL_SYSTEM
  38 AC_ARG_PROGRAM
  39
  40 # We require a C++11 compiler.  Check if one is available, and if
  41 # necessary, set CXX_DIALECT to some -std=xxx switch.
  42 AX_CXX_COMPILE_STDCXX(11, , mandatory)
  43
  44 # Dependency checking.
  45 ZW_CREATE_DEPDIR
  46 ZW_PROG_COMPILER_DEPENDENCIES([CC])
  47
  48 gnulib_extra_configure_args=
  49 # If large-file support is disabled, make sure gnulib does the same.
  50 if test "$enable_largefile" = no; then
  51 gnulib_extra_configure_args="$gnulib_extra_configure_args --disable-largefile"
  52 fi
  53
  54 # Configure gnulib.  We need to build gnulib under some other
  55 # directory not "gnulib", to avoid the problem of both GDB and
  56 # GDBserver wanting to build it in the same directory, when building
  57 # in the source dir.
  58 ACX_CONFIGURE_DIR(["gnulib"], ["build-gnulib"],
  59                   ["$gnulib_extra_configure_args"])
  60
  61 dnl List of object files and targets accumulated by configure.
  62
  63 CONFIG_OBS=
  64 CONFIG_DEPS=
  65 CONFIG_SRCS=
  66 ENABLE_CFLAGS=
  67
  68 CONFIG_ALL=
  69 CONFIG_CLEAN=
  70 CONFIG_INSTALL=
  71 CONFIG_UNINSTALL=
  72
  73 dnl Set up for gettext.
  74 ZW_GNU_GETTEXT_SISTER_DIR
  75
  76 localedir='${datadir}/locale'
  77 AC_SUBST(localedir)
  78
  79 if test x"$USE_NLS" = xyes; then
  80    CONFIG_ALL="$CONFIG_ALL all-po"
  81    CONFIG_CLEAN="$CONFIG_CLEAN clean-po"
  82    CONFIG_INSTALL="$CONFIG_INSTALL install-po"
  83    CONFIG_UNINSTALL="$CONFIG_UNINSTALL uninstall-po"
  84 fi
  85
  86 GNULIB=build-gnulib/import
  87
  88 # For Makefile dependencies.
  89 GNULIB_STDINT_H=
  90 if test x"$STDINT_H" != x; then
  91   GNULIB_STDINT_H=$GNULIB/$STDINT_H
  92 fi
  93 AC_SUBST(GNULIB_STDINT_H)
  94
  95 PACKAGE=gdb
  96 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of this package. ])
  97 AC_SUBST(PACKAGE)
  98
  99 # We never need to detect it in this sub-configure.
 100 # But preserve it for config.status --recheck.
 101 AC_ARG_VAR(MAKEINFO,
 102   [Parent configure detects if it is of sufficient version.])
 103 AC_ARG_VAR(MAKEINFOFLAGS,
 104   [Parameters for MAKEINFO.])
 105
 106 MAKEINFO_EXTRA_FLAGS=""
 107 AC_CACHE_CHECK([whether $MAKEINFO supports @click], gdb_cv_have_makeinfo_click,
 108   [echo '@clicksequence{a @click{} b}' >conftest.texinfo
 109   if eval "$MAKEINFO conftest.texinfo >&5 2>&5"; then
 110     gdb_cv_have_makeinfo_click=yes
 111   else
 112     gdb_cv_have_makeinfo_click=no
 113   fi])
 114 if test x"$gdb_cv_have_makeinfo_click" = xyes; then
 115   MAKEINFO_EXTRA_FLAGS="$MAKEINFO_EXTRA_FLAGS -DHAVE_MAKEINFO_CLICK"
 116 fi
 117 AC_SUBST(MAKEINFO_EXTRA_FLAGS)
 118
 119 GDB_AC_WITH_DIR(DEBUGDIR, separate-debug-dir,
 120     [look for global separate debug info in this path @<:@LIBDIR/debug@:>@],
 121     [${libdir}/debug])
 122
 123 # We can't pass paths as command line arguments.
 124 # Mingw32 tries to be clever and will convert the paths for us.
 125 # For example -DBINDIR="/usr/local/bin" passed on the command line may get
 126 # converted to -DBINDIR="E:/msys/mingw32/msys/1.0/local/bin".
 127 # This breaks GDB's relocatable path conversions since paths passed in
 128 # config.h would not get so translated, the path prefixes no longer match.
 129 AC_DEFINE_DIR(BINDIR, bindir, [Directory of programs.])
 130
 131 # GDB's datadir relocation
 132
 133 GDB_AC_WITH_DIR(GDB_DATADIR, gdb-datadir,
 134     [look for global separate data files in this path @<:@DATADIR/gdb@:>@],
 135     [${datadir}/gdb])
 136
 137 AC_ARG_WITH(relocated-sources,
 138 AS_HELP_STRING([--with-relocated-sources=PATH], [automatically relocate this path for source files]),
 139 [reloc_srcdir="${withval}"
 140  AC_DEFINE_DIR(RELOC_SRCDIR, reloc_srcdir,
 141               [Relocated directory for source files. ])
 142 ])
 143
 144 AC_MSG_CHECKING([for default auto-load directory])
 145 AC_ARG_WITH(auto-load-dir,
 146 AS_HELP_STRING([--with-auto-load-dir=PATH],
 147   [directories from which to load auto-loaded scripts @<:@$debugdir:$datadir/auto-load@:>@]),,
 148   [with_auto_load_dir='$debugdir:$datadir/auto-load'])
 149 escape_dir=`echo $with_auto_load_dir | sed 's/[[$]]\(datadir\|debugdir\)\>/\\\\\\\\\\\\&/g'`
 150 AC_DEFINE_DIR(AUTO_LOAD_DIR, escape_dir,
 151               [Directories from which to load auto-loaded scripts.])
 152 AC_MSG_RESULT([$with_auto_load_dir])
 153
 154 AC_MSG_CHECKING([for default auto-load safe-path])
 155 AC_ARG_WITH(auto-load-safe-path,
 156 AS_HELP_STRING([--with-auto-load-safe-path=PATH],
 157   [directories safe to hold auto-loaded files @<:@--with-auto-load-dir@:>@])
 158 AS_HELP_STRING([--without-auto-load-safe-path],
 159                [do not restrict auto-loaded files locations]),
 160     [if test "$with_auto_load_safe_path" = "no"; then
 161      with_auto_load_safe_path="/"
 162      fi],
 163 [with_auto_load_safe_path="$with_auto_load_dir"])
 164 escape_dir=`echo $with_auto_load_safe_path | sed 's/[[$]]\(datadir\|debugdir\)\>/\\\\\\\\\\\\&/g'`
 165 AC_DEFINE_DIR(AUTO_LOAD_SAFE_PATH, escape_dir,
 166               [Directories safe to hold auto-loaded files.])
 167 AC_MSG_RESULT([$with_auto_load_safe_path])
 168
 169 AC_CONFIG_SUBDIRS(testsuite)
 170
 171 # Check whether to support alternative target configurations
 172 AC_ARG_ENABLE(targets,
 173 AS_HELP_STRING([--enable-targets=TARGETS], [alternative target configurations]),
 174 [case "${enableval}" in
 175   yes | "") AC_ERROR(enable-targets option must specify target names or 'all')
 176             ;;
 177   no)       enable_targets= ;;
 178   *)        enable_targets=$enableval ;;
 179 esac])
 180
 181 # Check whether to enable 64-bit support on 32-bit hosts
 182 AC_ARG_ENABLE(64-bit-bfd,
 183 AS_HELP_STRING([--enable-64-bit-bfd], [64-bit support (on hosts with narrower word sizes)]),
 184 [case "${enableval}" in
 185   yes)  want64=true  ;;
 186   no)   want64=false ;;
 187   *)    AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;;
 188 esac],[want64=false])dnl
 189
 190 # Provide defaults for some variables set by the per-host and per-target
 191 # configuration.
 192 gdb_host_obs=posix-hdep.o
 193
 194 if test "${target}" = "${host}"; then
 195   gdb_native=yes
 196 else
 197   gdb_native=no
 198 fi
 199
 200 . $srcdir/configure.host
 201
 202 # Add in the common host objects.
 203 . $srcdir/common/common.host
 204 gdb_host_obs="$gdb_host_obs $common_host_obs"
 205
 206 # Accumulate some settings from configure.tgt over all enabled targets
 207
 208 TARGET_OBS=
 209 all_targets=
 210 HAVE_NATIVE_GCORE_TARGET=
 211
 212 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
 213 do
 214   if test "$targ_alias" = "all"; then
 215     all_targets=true
 216   else
 217     # Canonicalize the secondary target names.
 218     result=`$ac_config_sub $targ_alias 2>/dev/null`
 219     if test -n "$result"; then
 220         targ=$result
 221     else
 222         targ=$targ_alias
 223     fi
 224
 225     . ${srcdir}/configure.tgt
 226
 227     AS_IF([test -z "${gdb_target_obs}"],
 228       [AC_MSG_ERROR([configuration ${targ} is unsupported.])])
 229
 230     # Target-specific object files
 231     for i in ${gdb_target_obs}; do
 232         case " $TARGET_OBS " in
 233         *" ${i} "*) ;;
 234         *)
 235           TARGET_OBS="$TARGET_OBS ${i}"
 236           ;;
 237         esac
 238     done
 239
 240     # Check whether this target needs 64-bit CORE_ADDR
 241     if test x${want64} = xfalse; then
 242       . ${srcdir}/../bfd/config.bfd
 243     fi
 244
 245     # Check whether this target is native and supports gcore.
 246     if test $gdb_native = yes -a "$targ_alias" = "$target_alias" \
 247        && $gdb_have_gcore; then
 248       HAVE_NATIVE_GCORE_TARGET=1
 249     fi
 250   fi
 251 done
 252
 253 if test x${all_targets} = xtrue; then
 254
 255   # We want all 64-bit targets if we either:
 256   #  - run on a 64-bit host  or
 257   #  - already require 64-bit support for some other target  or
 258   #  - the --enable-64-bit-bfd option was supplied
 259   # Otherwise we only support all 32-bit targets.
 260   #
 261   # NOTE: This test must be in sync with the corresponding
 262   #       tests in BFD!
 263
 264   if test x${want64} = xfalse; then
 265     AC_CHECK_SIZEOF(long)
 266     if test "x${ac_cv_sizeof_long}" = "x8"; then
 267       want64=true
 268     fi
 269   fi
 270   if test x${want64} = xtrue; then
 271     TARGET_OBS='$(ALL_TARGET_OBS) $(ALL_64_TARGET_OBS)'
 272   else
 273     TARGET_OBS='$(ALL_TARGET_OBS)'
 274   fi
 275 fi
 276
 277 AC_SUBST(TARGET_OBS)
 278 AC_SUBST(HAVE_NATIVE_GCORE_TARGET)
 279
 280 # For other settings, only the main target counts.
 281 gdb_sim=
 282 gdb_osabi=
 283 build_gdbserver=
 284 targ=$target; . ${srcdir}/configure.tgt
 285
 286 # Fetch the default architecture and default target vector from BFD.
 287 targ=$target; . $srcdir/../bfd/config.bfd
 288
 289 # We only want the first architecture, so strip off the others if
 290 # there is more than one.
 291 targ_archs=`echo $targ_archs | sed 's/ .*//'`
 292
 293 if test "x$targ_archs" != x; then
 294   AC_DEFINE_UNQUOTED(DEFAULT_BFD_ARCH, $targ_archs,
 295     [Define to BFD's default architecture. ])
 296 fi
 297 if test "x$targ_defvec" != x; then
 298   AC_DEFINE_UNQUOTED(DEFAULT_BFD_VEC, $targ_defvec,
 299     [Define to BFD's default target vector. ])
 300 fi
 301
 302 # Enable MI.
 303 AC_ARG_ENABLE(gdbmi,
 304 AS_HELP_STRING([--disable-gdbmi], [disable machine-interface (MI)]),
 305   [case $enableval in
 306     yes | no)
 307       ;;
 308     *)
 309       AC_MSG_ERROR([bad value $enableval for --enable-gdbmi]) ;;
 310   esac],
 311   [enable_gdbmi=yes])
 312 if test x"$enable_gdbmi" = xyes; then
 313   if test -d $srcdir/mi; then
 314     CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_MI_OBS)"
 315     CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_MI_DEPS)"
 316     CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_MI_SRCS)"
 317     ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_MI_CFLAGS)"
 318   fi
 319 fi
 320
 321 # Enable TUI.
 322 AC_ARG_ENABLE(tui,
 323 AS_HELP_STRING([--enable-tui], [enable full-screen terminal user interface (TUI)]),
 324   [case $enableval in
 325     yes | no | auto)
 326       ;;
 327     *)
 328       AC_MSG_ERROR([bad value $enableval for --enable-tui]) ;;
 329   esac],enable_tui=auto)
 330
 331 # Enable gdbtk.
 332 AC_ARG_ENABLE(gdbtk,
 333 AS_HELP_STRING([--enable-gdbtk], [enable gdbtk graphical user interface (GUI)]),
 334   [case $enableval in
 335     yes | no)
 336       ;;
 337     *)
 338       AC_MSG_ERROR([bad value $enableval for --enable-gdbtk]) ;;
 339   esac],
 340   [if test -d $srcdir/gdbtk; then
 341     enable_gdbtk=yes
 342   else
 343     enable_gdbtk=no
 344   fi])
 345 # We unconditionally disable gdbtk tests on selected platforms.
 346 case $host_os in
 347   go32* | windows*)
 348     AC_MSG_WARN([gdbtk isn't supported on $host; disabling])
 349     enable_gdbtk=no ;;
 350 esac
 351
 352 # Libunwind support for ia64.
 353
 354 AC_ARG_WITH(libunwind-ia64,
 355 AS_HELP_STRING([--with-libunwind-ia64],
 356                [use libunwind frame unwinding for ia64 targets]),,
 357             [with_libunwind_ia64=auto])
 358
 359 # Backward compatibility option.
 360 if test "${with_libunwind+set}" = set; then
 361   if test x"$with_libunwind_ia64" != xauto; then
 362     AC_MSG_ERROR(
 363       [option --with-libunwind is deprecated, use --with-libunwind-ia64])
 364   fi
 365   AC_MSG_WARN([option --with-libunwind is deprecated, use --with-libunwind-ia64])
 366   with_libunwind_ia64="$with_libunwind"
 367 fi
 368
 369 case "$with_libunwind_ia64" in
 370   yes | no)
 371     ;;
 372   auto)
 373     AC_CHECK_HEADERS(libunwind-ia64.h)
 374     with_libunwind_ia64=$ac_cv_header_libunwind_ia64_h
 375     ;;
 376   *)
 377     AC_MSG_ERROR(
 378       [bad value $with_libunwind_ia64 for GDB --with-libunwind-ia64 option])
 379     ;;
 380 esac
 381
 382 if test x"$with_libunwind_ia64" = xyes; then
 383   AC_CHECK_HEADERS(libunwind-ia64.h)
 384   if test x"$ac_cv_header_libunwind_ia64_h" != xyes; then
 385     AC_MSG_ERROR([GDB option --with-libunwind-ia64 requires libunwind-ia64.h])
 386   fi
 387   CONFIG_OBS="$CONFIG_OBS ia64-libunwind-tdep.o"
 388   CONFIG_DEPS="$CONFIG_DEPS ia64-libunwind-tdep.o"
 389   CONFIG_SRCS="$CONFIG_SRCS ia64-libunwind-tdep.c"
 390 fi
 391
 392 opt_curses=no
 393 AC_ARG_WITH(curses, AS_HELP_STRING([--with-curses], [use the curses library instead of the termcap library]), opt_curses=$withval)
 394
 395 prefer_curses=no
 396 if test "$opt_curses" = "yes"; then
 397   prefer_curses=yes
 398 fi
 399
 400 # Profiling support.
 401 AC_ARG_ENABLE(profiling,
 402 AS_HELP_STRING([--enable-profiling], [enable profiling of GDB]),
 403   [case $enableval in
 404     yes | no)
 405       ;;
 406     *)
 407       AC_MSG_ERROR([bad value $enableval for --enable-profile]) ;;
 408   esac],
 409  [enable_profiling=no])
 410
 411 AC_CHECK_FUNCS(monstartup _mcleanup)
 412 AC_CACHE_CHECK([for _etext], ac_cv_var__etext,
 413 [AC_TRY_LINK(
 414 [#include <stdlib.h>
 415 extern char _etext;
 416 ],
 417 [free (&_etext);], ac_cv_var__etext=yes, ac_cv_var__etext=no)])
 418 if test $ac_cv_var__etext = yes; then
 419   AC_DEFINE(HAVE__ETEXT, 1,
 420             [Define to 1 if your system has the _etext variable. ])
 421 fi
 422 AC_CACHE_CHECK([for etext], ac_cv_var_etext,
 423 [AC_TRY_LINK(
 424 [#include <stdlib.h>
 425 extern char etext;
 426 ],
 427 [free (&etext);], ac_cv_var_etext=yes, ac_cv_var_etext=no)])
 428 if test $ac_cv_var_etext = yes; then
 429   AC_DEFINE(HAVE_ETEXT, 1,
 430             [Define to 1 if your system has the etext variable. ])
 431 fi
 432 if test "$enable_profiling" = yes ; then
 433   if test $ac_cv_func_monstartup = no || test $ac_cv_func__mcleanup = no; then
 434     AC_MSG_ERROR(--enable-profiling requires monstartup and _mcleanup)
 435   fi
 436   PROFILE_CFLAGS=-pg
 437   OLD_CFLAGS="$CFLAGS"
 438   CFLAGS="$CFLAGS $PROFILE_CFLAGS"
 439
 440   AC_CACHE_CHECK([whether $CC supports -pg], ac_cv_cc_supports_pg,
 441     [AC_TRY_COMPILE([], [int x;], ac_cv_cc_supports_pg=yes,
 442      ac_cv_cc_supports_pg=no)])
 443
 444   if test $ac_cv_cc_supports_pg = no; then
 445     AC_MSG_ERROR(--enable-profiling requires a compiler which supports -pg)
 446   fi
 447
 448   CFLAGS="$OLD_CFLAGS"
 449 fi
 450
 451 CODESIGN_CERT=
 452 AC_ARG_ENABLE([codesign],
 453   AS_HELP_STRING([--enable-codesign=CERT],
 454                  [sign gdb with 'codesign -s CERT']),
 455   [CODESIGN_CERT=$enableval])
 456 AC_SUBST([CODESIGN_CERT])
 457
 458 ACX_PKGVERSION([GDB])
 459 ACX_BUGURL([http://www.gnu.org/software/gdb/bugs/])
 460 AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
 461 AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
 462
 463 # --------------------- #
 464 # Checks for programs.  #
 465 # --------------------- #
 466
 467 AC_PROG_AWK
 468 AC_PROG_INSTALL
 469 AC_PROG_LN_S
 470 AC_PROG_RANLIB
 471 AC_PROG_YACC
 472
 473 AC_CHECK_TOOL(AR, ar)
 474 AC_CHECK_TOOL(DLLTOOL, dlltool)
 475 AC_CHECK_TOOL(WINDRES, windres)
 476
 477 case $host_os in
 478   gnu*)
 479     # Needed for GNU Hurd hosts.
 480     AC_CHECK_TOOL(MIG, mig)
 481     if test x"$MIG" = x; then
 482       AC_MSG_ERROR([MIG not found but required for $host hosts])
 483     fi
 484     ;;
 485 esac
 486
 487 # ---------------------- #
 488 # Checks for libraries.  #
 489 # ---------------------- #
 490
 491 # We might need to link with -lm; most simulators need it.
 492 AC_CHECK_LIB(m, main)
 493
 494 # Some systems (e.g. Solaris) have `gethostbyname' in libnsl.
 495 AC_SEARCH_LIBS(gethostbyname, nsl)
 496
 497 # Some systems (e.g. Solaris) have `socketpair' in libsocket.
 498 AC_SEARCH_LIBS(socketpair, socket)
 499
 500 # Link in zlib if we can.  This allows us to read compressed debug sections.
 501 AM_ZLIB
 502
 503 # On FreeBSD we may need libutil for kinfo_getvmmap (used by fbsd-nat.c).
 504 # On GNU/kFreeBSD systems, FreeBSD libutil is renamed to libutil-freebsd.
 505 AC_SEARCH_LIBS(kinfo_getvmmap, util util-freebsd,
 506   [AC_DEFINE(HAVE_KINFO_GETVMMAP, 1,
 507             [Define to 1 if your system has the kinfo_getvmmap function. ])])
 508
 509 # fbsd-nat.c can also use kinfo_getfile.
 510 AC_SEARCH_LIBS(kinfo_getfile, util util-freebsd,
 511   [AC_DEFINE(HAVE_KINFO_GETFILE, 1,
 512             [Define to 1 if your system has the kinfo_getfile function. ])])
 513
 514 AM_ICONV
 515
 516 # GDB may fork/exec the iconv program to get the list of supported character
 517 # sets.  Allow the user to specify where to find it.
 518 # There are several factors affecting the choice of option name:
 519 # - There is already --with-libiconv-prefix but we can't use it, it specifies
 520 #   the build-time location of libiconv files.
 521 # - The program we need to find is iconv, which comes with glibc.  The user
 522 #   doesn't necessarily have libiconv installed.  Therefore naming this
 523 #   --with-libiconv-foo feels wrong.
 524 # - We want the path to be relocatable, but GDB_AC_DEFINE_RELOCATABLE is
 525 #   defined to work on directories not files (though it really doesn't know
 526 #   the difference).
 527 # - Calling this --with-iconv-prefix is perceived to cause too much confusion
 528 #   with --with-libiconv-prefix.
 529 # Putting these together is why the option name is --with-iconv-bin.
 530
 531 AC_ARG_WITH(iconv-bin,
 532 AS_HELP_STRING([--with-iconv-bin=PATH], [specify where to find the iconv program]),
 533 [iconv_bin="${withval}"
 534  AC_DEFINE_UNQUOTED([ICONV_BIN], ["${iconv_bin}"],
 535                     [Path of directory of iconv program.])
 536  GDB_AC_DEFINE_RELOCATABLE(ICONV_BIN, iconv, ${iconv_bin})
 537 ])
 538
 539 # For the TUI, we need enhanced curses functionality.
 540 if test x"$enable_tui" != xno; then
 541   prefer_curses=yes
 542 fi
 543
 544 curses_found=no
 545 if test x"$prefer_curses" = xyes; then
 546   # FIXME: kettenis/20040905: We prefer ncurses over the vendor-supplied
 547   # curses library because the latter might not provide all the
 548   # functionality we need.  However, this leads to problems on systems
 549   # where the linker searches /usr/local/lib, but the compiler doesn't
 550   # search /usr/local/include, if ncurses is installed in /usr/local.  A
 551   # default installation of ncurses on alpha*-dec-osf* will lead to such
 552   # a situation.
 553   AC_SEARCH_LIBS(waddstr, [ncursesw ncurses cursesX curses])
 554
 555   if test "$ac_cv_search_waddstr" != no; then
 556     curses_found=yes
 557   fi
 558 fi
 559
 560 # Check whether we should enable the TUI, but only do so if we really
 561 # can.
 562 if test x"$enable_tui" != xno; then
 563   if test -d $srcdir/tui; then
 564     if test "$curses_found" != no; then
 565       CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_TUI_OBS)"
 566       CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_TUI_DEPS)"
 567       CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_TUI_SRCS)"
 568       ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_TUI_CFLAGS)"
 569     else
 570       if test x"$enable_tui" = xyes; then
 571         AC_MSG_ERROR([no enhanced curses library found; disable TUI])
 572       else
 573         AC_MSG_WARN([no enhanced curses library found; disabling TUI])
 574       fi
 575     fi
 576   fi
 577 fi
 578
 579 # Since GDB uses Readline, we need termcap functionality.  In many
 580 # cases this will be provided by the curses library, but some systems
 581 # have a separate termcap library, or no curses library at all.
 582
 583 case $host_os in
 584   cygwin*)
 585     if test -d $srcdir/libtermcap; then
 586       LIBS="../libtermcap/libtermcap.a $LIBS"
 587       ac_cv_search_tgetent="../libtermcap/libtermcap.a"
 588     fi ;;
 589   go32* | *djgpp*)
 590     ac_cv_search_tgetent="none required"
 591     ;;
 592 esac
 593
 594 # These are the libraries checked by Readline.
 595 AC_SEARCH_LIBS(tgetent, [termcap tinfo curses ncursesw ncurses])
 596
 597 if test "$ac_cv_search_tgetent" = no; then
 598   CONFIG_OBS="$CONFIG_OBS stub-termcap.o"
 599 fi
 600
 601 AC_ARG_WITH([system-readline],
 602   [AS_HELP_STRING([--with-system-readline],
 603                   [use installed readline library])])
 604
 605 if test "$with_system_readline" = yes; then
 606   READLINE=-lreadline
 607   READLINE_DEPS=
 608   READLINE_CFLAGS=
 609   READLINE_TEXI_INCFLAG=
 610 else
 611   READLINE='$(READLINE_DIR)/libreadline.a'
 612   READLINE_DEPS='$(READLINE)'
 613   READLINE_CFLAGS='-I$(READLINE_SRC)/..'
 614   READLINE_TEXI_INCFLAG='-I $(READLINE_DIR)'
 615 fi
 616 AC_SUBST(READLINE)
 617 AC_SUBST(READLINE_DEPS)
 618 AC_SUBST(READLINE_CFLAGS)
 619 AC_SUBST(READLINE_TEXI_INCFLAG)
 620
 621 # Generate jit-reader.h
 622
 623 # This is typedeffed to GDB_CORE_ADDR in jit-reader.h
 624 TARGET_PTR=
 625
 626 AC_CHECK_SIZEOF(unsigned long long)
 627 AC_CHECK_SIZEOF(unsigned long)
 628 AC_CHECK_SIZEOF(unsigned __int128)
 629
 630 if test "x${ac_cv_sizeof_unsigned_long}" = "x8"; then
 631   TARGET_PTR="unsigned long"
 632 elif test "x${ac_cv_sizeof_unsigned_long_long}" = "x8"; then
 633   TARGET_PTR="unsigned long long"
 634 elif test "x${ac_cv_sizeof_unsigned___int128}" = "x16"; then
 635   TARGET_PTR="unsigned __int128"
 636 else
 637   TARGET_PTR="unsigned long"
 638 fi
 639
 640 AC_SUBST(TARGET_PTR)
 641 AC_CONFIG_FILES([jit-reader.h:jit-reader.in])
 642
 643 AC_SEARCH_LIBS(dlopen, dl)
 644
 645 GDB_AC_WITH_DIR([JIT_READER_DIR], [jit-reader-dir],
 646                 [directory to load the JIT readers from],
 647                 [${libdir}/gdb])
 648
 649 AC_ARG_WITH(expat,
 650   AS_HELP_STRING([--with-expat], [include expat support (auto/yes/no)]),
 651   [], [with_expat=auto])
 652 AC_MSG_CHECKING([whether to use expat])
 653 AC_MSG_RESULT([$with_expat])
 654
 655 if test "${with_expat}" = no; then
 656   AC_MSG_WARN([expat support disabled; some features may be unavailable.])
 657   HAVE_LIBEXPAT=no
 658 else
 659   AC_LIB_HAVE_LINKFLAGS([expat], [], [#include "expat.h"],
 660                         [XML_Parser p = XML_ParserCreate (0);])
 661   if test "$HAVE_LIBEXPAT" != yes; then
 662     if test "$with_expat" = yes; then
 663       AC_MSG_ERROR([expat is missing or unusable])
 664     else
 665       AC_MSG_WARN([expat is missing or unusable; some features may be unavailable.])
 666     fi
 667   else
 668     save_LIBS=$LIBS
 669     LIBS="$LIBS $LIBEXPAT"
 670     AC_CHECK_FUNCS(XML_StopParser)
 671     LIBS=$save_LIBS
 672   fi
 673 fi
 674
 675 AC_ARG_WITH(mpfr,
 676   AS_HELP_STRING([--with-mpfr], [include MPFR support (auto/yes/no)]),
 677   [], [with_mpfr=auto])
 678 AC_MSG_CHECKING([whether to use MPFR])
 679 AC_MSG_RESULT([$with_mpfr])
 680
 681 if test "${with_mpfr}" = no; then
 682   AC_MSG_WARN([MPFR support disabled; some features may be unavailable.])
 683   HAVE_LIBMPFR=no
 684 else
 685   AC_LIB_HAVE_LINKFLAGS([mpfr], [gmp], [#include <mpfr.h>],
 686                         [mpfr_exp_t exp; mpfr_t x;
 687                          mpfr_frexp (&exp, x, x, MPFR_RNDN);])
 688   if test "$HAVE_LIBMPFR" != yes; then
 689     if test "$with_mpfr" = yes; then
 690       AC_MSG_ERROR([MPFR is missing or unusable])
 691     else
 692       AC_MSG_WARN([MPFR is missing or unusable; some features may be unavailable.])
 693     fi
 694   fi
 695 fi
 696
 697 # --------------------- #
 698 # Check for libpython.  #
 699 # --------------------- #
 700
 701 dnl Utility to simplify finding libpython.
 702 dnl $1 = pythonX.Y
 703 dnl $2 = the shell variable to assign the result to
 704 dnl      If libpython is found we store $version here.
 705 dnl $3 = additional flags to add to CPPFLAGS
 706 dnl $4 = additional flags to add to LIBS
 707
 708 AC_DEFUN([AC_TRY_LIBPYTHON],
 709 [
 710   version=$1
 711   define([have_libpython_var],$2)
 712   new_CPPFLAGS=$3
 713   new_LIBS=$4
 714   AC_MSG_CHECKING([for ${version}])
 715   save_CPPFLAGS=$CPPFLAGS
 716   save_LIBS=$LIBS
 717   CPPFLAGS="$CPPFLAGS $new_CPPFLAGS"
 718   LIBS="$new_LIBS $LIBS"
 719   found_usable_python=no
 720   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include "Python.h"]],
 721                                  [[Py_Initialize ();]])],
 722                  [have_libpython_var=${version}
 723                   found_usable_python=yes
 724                   PYTHON_CPPFLAGS=$new_CPPFLAGS
 725                   PYTHON_LIBS=$new_LIBS])
 726   CPPFLAGS=$save_CPPFLAGS
 727   LIBS=$save_LIBS
 728   AC_MSG_RESULT([${found_usable_python}])
 729 ])
 730
 731 dnl There are several different values for --with-python:
 732 dnl
 733 dnl no -   Don't include python support.
 734 dnl yes -  Include python support, error if it's missing.
 735 dnl        If we find python in $PATH, use it to fetch configure options,
 736 dnl        otherwise assume the compiler can find it with no help from us.
 737 dnl        Python 2.7, 2.6, 2.5, and then 2.4 are tried in turn.
 738 dnl auto - Same as "yes", but if python is missing from the system,
 739 dnl        fall back to "no".
 740 dnl /path/to/python/exec-prefix -
 741 dnl        Use the python located in this directory.
 742 dnl        If /path/to/python/exec-prefix/bin/python exists, use it to find
 743 dnl        the compilation parameters.  Otherwise use
 744 dnl        -I/path/to/python/exec-prefix/include,
 745 dnl        -L/path/to/python/exec-prefix/lib.
 746 dnl        Python 2.7, 2.6, 2.5, and then 2.4 are tried in turn.
 747 dnl        NOTE: This case is historical.  It is what was done for 7.0/7.1
 748 dnl        but is deprecated.
 749 dnl /path/to/python/executable -
 750 dnl        Run python-config.py with this version of python to fetch the
 751 dnl        compilation parameters.
 752 dnl        NOTE: This needn't be the real python executable.
 753 dnl        In a cross-compilation scenario (build != host), this could be
 754 dnl        a shell script that provides what python-config.py provides for
 755 dnl        --ldflags, --includes, --exec-prefix.
 756 dnl python-executable -
 757 dnl        Find python-executable in $PATH, and then handle the same as
 758 dnl        /path/to/python/executable.
 759 dnl
 760 dnl If a python program is specified, it is used to run python-config.py and
 761 dnl is passed --ldflags, --includes, --exec-prefix.
 762
 763 AC_ARG_WITH(python,
 764   AS_HELP_STRING([--with-python@<:@=PYTHON@:>@], [include python support (auto/yes/no/<python-program>)]),
 765   [], [with_python=auto])
 766 AC_MSG_CHECKING([whether to use python])
 767 AC_MSG_RESULT([$with_python])
 768
 769 if test "${with_python}" = no; then
 770   AC_MSG_WARN([python support disabled; some features may be unavailable.])
 771   have_libpython=no
 772 else
 773   case "${with_python}" in
 774   [[\\/]]* | ?:[[\\/]]*)
 775     if test -d ${with_python}; then
 776       # Assume the python binary is ${with_python}/bin/python.
 777       python_prog="${with_python}/bin/python"
 778       python_prefix=
 779       # If python does not exit ${with_python}/bin, then try in
 780       # ${with_python}.  On Windows/MinGW, this is where the Python
 781       # executable is.
 782       if test ! -x "${python_prog}"; then
 783         python_prog="${with_python}/python"
 784         python_prefix=
 785       fi
 786       if test ! -x "${python_prog}"; then
 787         # Fall back to gdb 7.0/7.1 behaviour.
 788         python_prog=missing
 789         python_prefix=${with_python}
 790       fi
 791     elif test -x "${with_python}"; then
 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       python_prefix=
 797     else
 798       AC_ERROR(invalid value for --with-python)
 799     fi
 800     ;;
 801   */*)
 802     # Disallow --with-python=foo/bar.
 803     AC_ERROR(invalid value for --with-python)
 804     ;;
 805   *)
 806     # The user has either specified auto, yes, or the name of the python
 807     # program assumed to be in $PATH.
 808     python_prefix=
 809     case "${with_python}" in
 810     yes | auto)
 811       if test ${build} = ${host}; then
 812         AC_PATH_PROG(python_prog_path, python, missing)
 813         if test "${python_prog_path}" = missing; then
 814           python_prog=missing
 815         else
 816           python_prog=${python_prog_path}
 817         fi
 818       else
 819         # Not much we can do except assume the cross-compiler will find the
 820         # right files.
 821         python_prog=missing
 822       fi
 823       ;;
 824     *)
 825       # While we can't run python compiled for $host (unless host == build),
 826       # the user could write a script that provides the needed information,
 827       # so we support that.
 828       python_prog="${with_python}"
 829       AC_PATH_PROG(python_prog_path, ${python_prog}, missing)
 830       if test "${python_prog_path}" = missing; then
 831         AC_ERROR(unable to find python program ${python_prog})
 832       fi
 833       ;;
 834     esac
 835   esac
 836
 837   if test "${python_prog}" != missing; then
 838     # We have a python program to use, but it may be too old.
 839     # Don't flag an error for --with-python=auto (the default).
 840     have_python_config=yes
 841     python_includes=`${python_prog} ${srcdir}/python/python-config.py --includes`
 842     if test $? != 0; then
 843       have_python_config=failed
 844       if test "${with_python}" != auto; then
 845         AC_ERROR(failure running python-config --includes)
 846       fi
 847     fi
 848     python_libs=`${python_prog} ${srcdir}/python/python-config.py --ldflags`
 849     if test $? != 0; then
 850       have_python_config=failed
 851       if test "${with_python}" != auto; then
 852         AC_ERROR(failure running python-config --ldflags)
 853       fi
 854     fi
 855     python_prefix=`${python_prog} ${srcdir}/python/python-config.py --exec-prefix`
 856     if test $? != 0; then
 857       have_python_config=failed
 858       if test "${with_python}" != auto; then
 859         AC_ERROR(failure running python-config --exec-prefix)
 860       fi
 861     fi
 862   else
 863     # We do not have a python executable we can use to determine where
 864     # to find the Python headers and libs.  We cannot guess the include
 865     # path from the python_prefix either, because that include path
 866     # depends on the Python version.  So, there is nothing much we can
 867     # do except assume that the compiler will be able to find those files.
 868     python_includes=
 869     python_libs=
 870     have_python_config=no
 871   fi
 872
 873   # If we have python-config, only try the configuration it provides.
 874   # Otherwise fallback on the old way of trying different versions of
 875   # python in turn.
 876
 877   have_libpython=no
 878   if test "${have_python_config}" = yes; then
 879     # Determine the Python version by extracting "-lpython<version>"
 880     # part of the python_libs. <version> is usually X.Y with X and Y
 881     # being decimal numbers, but can also be XY (seen on Windows).
 882     #
 883     # The extraction is performed using sed with a regular expression.
 884     # Initially, the regexp used was using the '?' quantifier to make
 885     # the dot in the version number optional.  Unfortunately, this
 886     # does not work with non-GNU versions of sed because, because of
 887     # what looks like a limitation (the '?' quantifier does not work
 888     # with back-references).  We work around this limitation by using
 889     # the '*' quantifier instead.  It means that, in theory, we might
 890     # match unexpected version strings such as "-lpython2..7", but
 891     # this seems unlikely in practice.  And even if that happens,
 892     # an error will be triggered later on, when checking that version
 893     # number.
 894     python_version=`echo " ${python_libs} " \
 895                          | sed -e 's,^.* -l\(python[[0-9]]*[[.]]*[[0-9]]*\).*$,\1,'`
 896     case "${python_version}" in
 897     python*)
 898       AC_TRY_LIBPYTHON(${python_version}, have_libpython,
 899                        ${python_includes}, ${python_libs})
 900       ;;
 901     *)
 902       AC_MSG_ERROR([unable to determine python version from ${python_libs}])
 903       ;;
 904     esac
 905   elif test "${have_python_config}" != failed; then
 906     if test "${have_libpython}" = no; then
 907       AC_TRY_LIBPYTHON(python2.7, have_libpython,
 908                        ${python_includes}, "-lpython2.7 ${python_libs}")
 909     fi
 910     if test "${have_libpython}" = no; then
 911       AC_TRY_LIBPYTHON(python2.6, have_libpython,
 912                        ${python_includes}, "-lpython2.6 ${python_libs}")
 913     fi
 914     if test ${have_libpython} = no; then
 915       AC_TRY_LIBPYTHON(python2.5, have_libpython,
 916                        ${python_includes}, "-lpython2.5 ${python_libs}")
 917     fi
 918     if test ${have_libpython} = no; then
 919       AC_TRY_LIBPYTHON(python2.4, have_libpython,
 920                        ${python_includes}, "-lpython2.4 ${python_libs}")
 921     fi
 922   fi
 923   if test "${have_libpython}" = python2.7 -o "${have_libpython}" = python27; then
 924     AC_DEFINE(HAVE_LIBPYTHON2_7, 1, [Define if Python 2.7 is being used.])
 925   elif test "${have_libpython}" = python2.6 -o "${have_libpython}" = python26; then
 926     AC_DEFINE(HAVE_LIBPYTHON2_6, 1, [Define if Python 2.6 is being used.])
 927   elif test "${have_libpython}" = python2.5 -o "${have_libpython}" = python25; then
 928     AC_DEFINE(HAVE_LIBPYTHON2_5, 1, [Define if Python 2.5 is being used.])
 929   elif test "${have_libpython}" = python2.4 -o "${have_libpython}" = python24; then
 930     AC_DEFINE(HAVE_LIBPYTHON2_4, 1, [Define if Python 2.4 is being used.])
 931   fi
 932
 933   if test "${have_libpython}" = no; then
 934     case "${with_python}" in
 935     yes)
 936       AC_MSG_ERROR([python is missing or unusable])
 937       ;;
 938     auto)
 939       AC_MSG_WARN([python is missing or unusable; some features may be unavailable.])
 940       ;;
 941     *)
 942       AC_MSG_ERROR([no usable python found at ${with_python}])
 943       ;;
 944     esac
 945   else
 946     if test -n "${python_prefix}"; then
 947       AC_DEFINE_UNQUOTED(WITH_PYTHON_PATH, "${python_prefix}",
 948                          [Define if --with-python provides a path, either directly or via python-config.py --exec-prefix.])
 949       GDB_AC_DEFINE_RELOCATABLE(PYTHON_PATH, python, ${python_prefix})
 950     fi
 951   fi
 952 fi
 953
 954 if test "${have_libpython}" != no; then
 955   AC_DEFINE(HAVE_PYTHON, 1, [Define if Python interpreter is being linked in.])
 956   CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_PYTHON_OBS)"
 957   CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_PYTHON_DEPS)"
 958   CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_PYTHON_SRCS)"
 959   CONFIG_INSTALL="$CONFIG_INSTALL install-python"
 960   ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_PYTHON_CFLAGS)"
 961
 962   # Flags needed to compile Python code (taken from python-config --cflags).
 963   # We cannot call python-config directly because it will output whatever was
 964   # used when compiling the Python interpreter itself, including flags which
 965   # would make the python-related objects be compiled differently from the
 966   # rest of GDB (e.g., -O2 and -fPIC).
 967   if test "${GCC}" = yes; then
 968     tentative_python_cflags="-fno-strict-aliasing -fwrapv"
 969     # Python headers recommend -DNDEBUG, but it's unclear if that just
 970     # refers to building Python itself.  In release mode, though, it
 971     # doesn't hurt for the Python code in gdb to follow.
 972     $development || tentative_python_cflags="$tentative_python_cflags -DNDEBUG"
 973   fi
 974
 975   if test "x${tentative_python_cflags}" != x; then
 976     AC_MSG_CHECKING(compiler flags for python code)
 977     for flag in ${tentative_python_cflags}; do
 978       # Check that the compiler accepts it
 979       saved_CFLAGS="$CFLAGS"
 980       CFLAGS="$CFLAGS $flag"
 981       AC_TRY_COMPILE([],[],PYTHON_CFLAGS="${PYTHON_CFLAGS} $flag",)
 982       CFLAGS="$saved_CFLAGS"
 983     done
 984     AC_MSG_RESULT(${PYTHON_CFLAGS})
 985   fi
 986
 987   # On x64 Windows, Python's include headers, and pyconfig.h in
 988   # particular, rely on MS_WIN64 macro to detect that it's a 64bit
 989   # version of Windows.  Unfortunately, MS_WIN64 is only defined if
 990   # _MSC_VER, a Microsoft-specific macro, is defined.  So, when
 991   # building on x64 Windows with GCC, we define MS_WIN64 ourselves.
 992   # The issue was reported to the Python community, but still isn't
 993   # solved as of 2012-10-02 (http://bugs.python.org/issue4709).
 994
 995   case "$gdb_host" in
 996     mingw64)
 997            if test "${GCC}" = yes; then
 998              CPPFLAGS="$CPPFLAGS -DMS_WIN64"
 999            fi
1000            ;;
1001   esac
1002
1003   # Note that "python -m threading" cannot be used to check for
1004   # threading support due to a bug in Python 2.7.3
1005   # (http://bugs.python.org/issue15567).
1006   AC_MSG_CHECKING(whether python supports threads)
1007   saved_CPPFLAGS="${CPPFLAGS}"
1008   CPPFLAGS="${PYTHON_CPPFLAGS}"
1009   # Note that the test is reversed so that python_has_threads=yes on
1010   # unexpected failures.
1011   AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
1012 #include <Python.h>
1013 #ifdef WITH_THREAD
1014 # error
1015 #endif
1016   ]])], [python_has_threads=no], [python_has_threads=yes])
1017   AC_MSG_RESULT(${python_has_threads})
1018   CPPFLAGS="${saved_CPPFLAGS}"
1019 else
1020   # Even if Python support is not compiled in, we need to have this file
1021   # included so that the "python" command, et.al., still exists.
1022   CONFIG_OBS="$CONFIG_OBS python/python.o"
1023   CONFIG_SRCS="$CONFIG_SRCS python/python.c"
1024 fi
1025
1026 # Work around Python http://bugs.python.org/issue10112.  See also
1027 # http://bugs.python.org/issue11410, otherwise -Wl,--dynamic-list has
1028 # no effect.  Note that the only test after this that uses Python is
1029 # the -rdynamic/-Wl,--dynamic-list test, and we do want that one to be
1030 # run without -export-dynamic too.
1031 PYTHON_LIBS=`echo $PYTHON_LIBS | sed -e 's/-Xlinker -export-dynamic//'`
1032
1033 AC_SUBST(PYTHON_CFLAGS)
1034 AC_SUBST(PYTHON_CPPFLAGS)
1035 AC_SUBST(PYTHON_LIBS)
1036 AM_CONDITIONAL(HAVE_PYTHON, test "${have_libpython}" != no)
1037
1038 # -------------------- #
1039 # Check for libguile.  #
1040 # -------------------- #
1041
1042 dnl Utility to simplify finding libguile.
1043 dnl $1 = pkg-config-program
1044 dnl $2 = space-separate list of guile versions to try
1045 dnl $3 = yes|no, indicating whether to flag errors or ignore them
1046 dnl $4 = the shell variable to assign the result to
1047 dnl      If libguile is found we store "yes" here.
1048
1049 AC_DEFUN([AC_TRY_LIBGUILE],
1050 [
1051   pkg_config=$1
1052   guile_version_list=$2
1053   flag_errors=$3
1054   define([have_libguile_var],$4)
1055   found_usable_guile=checking
1056   AC_MSG_CHECKING([for usable guile from ${pkg_config}])
1057   for guile_version in ${guile_version_list}; do
1058     ${pkg_config} --exists ${guile_version} 2>/dev/null
1059     if test $? != 0; then
1060       continue
1061     fi
1062     dnl pkg-config says the package exists, so if we get an error now,
1063     dnl that's bad.
1064     new_CPPFLAGS=`${pkg_config} --cflags ${guile_version}`
1065     if test $? != 0; then
1066       AC_MSG_ERROR([failure running pkg-config --cflags ${guile_version}])
1067     fi
1068     new_LIBS=`${pkg_config} --libs ${guile_version}`
1069     if test $? != 0; then
1070       AC_MSG_ERROR([failure running pkg-config --libs ${guile_version}])
1071     fi
1072     dnl If we get this far, great.
1073     found_usable_guile=${guile_version}
1074     break
1075   done
1076   if test "${found_usable_guile}" = "checking"; then
1077     if test "${flag_errors}" = "yes"; then
1078       AC_MSG_ERROR([unable to find usable guile version from "${guile_version_list}"])
1079     else
1080       found_usable_guile=no
1081     fi
1082   fi
1083   dnl One final sanity check.
1084   dnl The user could have said --with-guile=python-2.7.
1085   if test "${found_usable_guile}" != no; then
1086     save_CPPFLAGS=$CPPFLAGS
1087     save_LIBS=$LIBS
1088     CPPFLAGS="$CPPFLAGS $new_CPPFLAGS"
1089     LIBS="$LIBS $new_LIBS"
1090     AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include "libguile.h"]],
1091                                    [[scm_init_guile ();]])],
1092                    [have_libguile_var=yes
1093                     GUILE_CPPFLAGS=$new_CPPFLAGS
1094                     GUILE_LIBS=$new_LIBS],
1095                    [found_usable_guile=no])
1096     dnl scm_set_automatic_finalization_enabled added in Guile 2.2.
1097     AC_CHECK_FUNC(scm_set_automatic_finalization_enabled,
1098       AC_DEFINE(HAVE_GUILE_MANUAL_FINALIZATION, 1,
1099                 [Define if Guile supports manual finalization.])
1100     )
1101     CPPFLAGS=$save_CPPFLAGS
1102     LIBS=$save_LIBS
1103     if test "${found_usable_guile}" = no; then
1104       if test "${flag_errors}" = yes; then
1105         AC_MSG_FAILURE([linking guile version ${guile_version} test program failed])
1106       fi
1107     fi
1108   fi
1109   AC_MSG_RESULT([${found_usable_guile}])
1110 ])
1111
1112 dnl There are several different values for --with-guile:
1113 dnl
1114 dnl no -   Don't include guile support.
1115 dnl yes -  Include guile support, error if it's missing.
1116 dnl        The pkg-config program must be in $PATH.
1117 dnl auto - Same as "yes", but if guile is missing from the system,
1118 dnl        fall back to "no".
1119 dnl guile-version [guile-version-choice-2 ...] -
1120 dnl        A space-separated list of guile package versions to try.
1121 dnl        These are passed to pkg-config as-is.
1122 dnl        E.g., guile-2.0 or guile-2.2-uninstalled
1123 dnl        This requires making sure PKG_CONFIG_PATH is set appropriately.
1124 dnl /path/to/pkg-config -
1125 dnl        Use this pkg-config program.
1126 dnl        NOTE: This needn't be the "real" pkg-config program.
1127 dnl        It could be a shell script.  It is invoked as:
1128 dnl        pkg-config --exists $version
1129 dnl        pkg-config --cflags $version
1130 dnl        pkg-config --libs $version
1131 dnl        pkg-config --variable guild $version
1132 dnl        The script will be called with $version having each value in
1133 dnl        $try_guile_versions until --exists indicates success.
1134
1135 AC_ARG_WITH(guile,
1136   AS_HELP_STRING([--with-guile@<:@=GUILE@:>@], [include guile support (auto/yes/no/<guile-version>/<pkg-config-program>)]),
1137   [], [with_guile=auto])
1138 AC_MSG_CHECKING([whether to use guile])
1139 AC_MSG_RESULT([$with_guile])
1140
1141 dnl We check guile with pkg-config.
1142 AC_PATH_PROG(pkg_config_prog_path, pkg-config, missing)
1143
1144 try_guile_versions="guile-2.0"
1145 have_libguile=no
1146 case "${with_guile}" in
1147 no)
1148   AC_MSG_WARN([guile support disabled; some features will be unavailable.])
1149   ;;
1150 auto)
1151   if test "${pkg_config_prog_path}" = "missing"; then
1152     AC_MSG_WARN([pkg-config not found, guile support disabled])
1153   else
1154     AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${try_guile_versions}, no, have_libguile)
1155   fi
1156   ;;
1157 yes)
1158   if test "${pkg_config_prog_path}" = "missing"; then
1159     AC_MSG_ERROR([pkg-config not found])
1160   fi
1161   AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${try_guile_versions}, yes, have_libguile)
1162   ;;
1163 [[\\/]]* | ?:[[\\/]]*)
1164   if test -x "${with_guile}"; then
1165     AC_TRY_LIBGUILE(${with_guile}, ${try_guile_versions}, yes, have_libguile)
1166   else
1167     AC_MSG_ERROR([Guile config program not executable: ${with_guile}])
1168   fi
1169   ;;
1170 "" | */*)
1171   # Disallow --with=guile="" and --with-guile=foo/bar.
1172   AC_MSG_ERROR([invalid value for --with-guile])
1173   ;;
1174 *)
1175   # A space separate list of guile versions to try, in order.
1176   if test "${pkg_config_prog_path}" = "missing"; then
1177     AC_MSG_ERROR([pkg-config not found])
1178   fi
1179   AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${with_guile}, yes, have_libguile)
1180   ;;
1181 esac
1182
1183 if test "${have_libguile}" != no; then
1184   dnl Get the name of the 'guild' program.
1185   case "${with_guile}" in
1186   [[\\/]]* | ?:[[\\/]]*)
1187     GDB_GUILE_PROGRAM_NAMES(["${with_guile}"], ["${guile_version}"])
1188     ;;
1189   *)
1190     GDB_GUILE_PROGRAM_NAMES(["${pkg_config_prog_path}"], ["${guile_version}"])
1191     ;;
1192   esac
1193
1194   dnl Make sure guild can handle this host.
1195   GDB_TRY_GUILD([$srcdir/guile/lib/gdb/support.scm])
1196   dnl If not, disable guile support.
1197   if test "$ac_cv_guild_ok" = no; then
1198     have_libguile=no
1199     AC_MSG_WARN(disabling guile support, $GUILD fails compiling for $host)
1200   fi
1201 fi
1202
1203 if test "${have_libguile}" != no; then
1204   AC_DEFINE(HAVE_GUILE, 1, [Define if Guile interpreter is being linked in.])
1205   CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_GUILE_OBS)"
1206   CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_GUILE_DEPS)"
1207   CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_GUILE_SRCS)"
1208   CONFIG_INSTALL="$CONFIG_INSTALL install-guile"
1209   ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_GUILE_CFLAGS)"
1210
1211   dnl The 'scm_new_smob' function appeared in Guile 2.0.6.
1212   save_LIBS="$LIBS"
1213   save_CPPFLAGS="$CPPFLAGS"
1214   LIBS="$GUILE_LIBS"
1215   CPPFLAGS="$GUILE_CPPFLAGS"
1216   AC_CHECK_FUNCS([scm_new_smob])
1217   LIBS="$save_LIBS"
1218   CPPFLAGS="$save_CPPFLAGS"
1219 else
1220   # Even if Guile support is not compiled in, we need to have these files
1221   # included.
1222   CONFIG_OBS="$CONFIG_OBS guile/guile.o"
1223   CONFIG_SRCS="$CONFIG_SRCS guile/guile.c"
1224 fi
1225 AC_SUBST(GUILE_CPPFLAGS)
1226 AC_SUBST(GUILE_LIBS)
1227 AM_CONDITIONAL(HAVE_GUILE, test "${have_libguile}" != no)
1228
1229 # --------------------- #
1230 # Check for libmcheck.  #
1231 # --------------------- #
1232
1233 # Enable -lmcheck by default (it provides cheap-enough memory mangling),
1234 # but turn it off if Python is enabled with threads, since -lmcheck is
1235 # not thread safe (http://sourceware.org/bugzilla/show_bug.cgi?id=9939),
1236 # and for releases.
1237 if test \( "${have_libpython}" = "no" -o "${python_has_threads}" = "no" \) \
1238    && $development; then
1239   libmcheck_default=yes
1240 else
1241   libmcheck_default=no
1242 fi
1243 GDB_AC_LIBMCHECK(${libmcheck_default})
1244
1245 if test "$ENABLE_LIBMCHECK" = "yes" \
1246         -a "${have_libpython}" != "no" \
1247         -a "${python_has_threads}" = "yes" ; then
1248   AC_MSG_WARN(--enable-libmcheck may lead to spurious crashes if threads are used in python)
1249 fi
1250
1251 AC_ARG_WITH(intel_pt,
1252   AS_HELP_STRING([--with-intel-pt], [include Intel Processor Trace support (auto/yes/no)]),
1253   [], [with_intel_pt=auto])
1254 AC_MSG_CHECKING([whether to use intel pt])
1255 AC_MSG_RESULT([$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 mkdtemp setns])
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
1533   dnl Check for broken prfpregset_t type
1534
1535   dnl For Linux/i386, glibc 2.1.3 was released with a bogus
1536   dnl prfpregset_t type (it's a typedef for the pointer to a struct
1537   dnl instead of the struct itself).  We detect this here, and work
1538   dnl around it in gdb_proc_service.h.
1539
1540   if test $bfd_cv_have_sys_procfs_type_prfpregset_t = yes; then
1541     AC_MSG_CHECKING(whether prfpregset_t type is broken)
1542     AC_CACHE_VAL(gdb_cv_prfpregset_t_broken,
1543       [AC_TRY_RUN([#include <sys/procfs.h>
1544        int main ()
1545        {
1546          if (sizeof (prfpregset_t) == sizeof (void *))
1547            return 1;
1548          return 0;
1549        }],
1550        gdb_cv_prfpregset_t_broken=no,
1551        gdb_cv_prfpregset_t_broken=yes,
1552        gdb_cv_prfpregset_t_broken=yes)])
1553     AC_MSG_RESULT($gdb_cv_prfpregset_t_broken)
1554     if test $gdb_cv_prfpregset_t_broken = yes; then
1555       AC_DEFINE(PRFPREGSET_T_BROKEN, 1,
1556       [Define if the prfpregset_t type is broken.])
1557     fi
1558   fi
1559 fi
1560
1561 # Check if the compiler supports the `long long' type.
1562
1563 AC_CACHE_CHECK([for long long support in compiler], gdb_cv_c_long_long,
1564                [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1565 [[extern long long foo;]],
1566 [[switch (foo & 2) { case 0: return 1; }]])],
1567                                   gdb_cv_c_long_long=yes,
1568                                   gdb_cv_c_long_long=no)])
1569 if test $gdb_cv_c_long_long != yes; then
1570   # libdecnumber requires long long.
1571   AC_MSG_ERROR([Compiler must support long long for GDB.])
1572 fi
1573
1574 # Check if the compiler and runtime support printing long longs.
1575
1576 AC_CACHE_CHECK([for long long support in printf],
1577                gdb_cv_printf_has_long_long,
1578                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1579 [[char buf[32];
1580   long long l = 0;
1581   l = (l << 16) + 0x0123;
1582   l = (l << 16) + 0x4567;
1583   l = (l << 16) + 0x89ab;
1584   l = (l << 16) + 0xcdef;
1585   sprintf (buf, "0x%016llx", l);
1586   return (strcmp ("0x0123456789abcdef", buf));]])],
1587                               gdb_cv_printf_has_long_long=yes,
1588                               gdb_cv_printf_has_long_long=no,
1589                               gdb_cv_printf_has_long_long=no)])
1590 if test $gdb_cv_printf_has_long_long = yes; then
1591   AC_DEFINE(PRINTF_HAS_LONG_LONG, 1,
1592             [Define to 1 if the "%ll" format works to print long longs.])
1593 fi
1594
1595 # Check if the compiler and runtime support printing decfloats.
1596
1597 AC_CACHE_CHECK([for decfloat support in printf],
1598                gdb_cv_printf_has_decfloat,
1599                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1600 [[char buf[64];
1601   _Decimal32 d32 = 1.2345df;
1602   _Decimal64 d64 = 1.2345dd;
1603   _Decimal128 d128 = 1.2345dl;
1604   sprintf (buf, "Decimal32: %H\nDecimal64: %D\nDecimal128: %DD", d32, d64, d128);
1605   return (strcmp ("Decimal32: 1.2345\nDecimal64: 1.2345\nDecimal128: 1.2345", buf));]])],
1606                               gdb_cv_printf_has_decfloat=yes,
1607                               gdb_cv_printf_has_decfloat=no,
1608                               gdb_cv_printf_has_decfloat=no)])
1609 if test $gdb_cv_printf_has_decfloat = yes; then
1610   AC_DEFINE(PRINTF_HAS_DECFLOAT, 1,
1611             [Define to 1 if the "%H, %D and %DD" formats work to print decfloats.])
1612 fi
1613
1614 # Check if the compiler supports the `long double' type.  We can't use
1615 # AC_C_LONG_DOUBLE because that one does additional checks on the
1616 # constants defined in <float.h> that fail on some systems,
1617 # e.g. FreeBSD/i386 4.7 and OpenBSD/i386 3.6.
1618
1619 AC_CACHE_CHECK([for long double support in compiler], gdb_cv_c_long_double,
1620                [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[long double foo;]])],
1621                                   gdb_cv_c_long_double=yes,
1622                                   gdb_cv_c_long_double=no)])
1623 if test $gdb_cv_c_long_double = yes; then
1624   AC_DEFINE(HAVE_LONG_DOUBLE, 1,
1625            [Define to 1 if the compiler supports long double.])
1626 fi
1627
1628 # Check if the compiler and runtime support printing long doubles.
1629
1630 AC_CACHE_CHECK([for long double support in printf],
1631                gdb_cv_printf_has_long_double,
1632                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1633 [[char buf[16];
1634   long double f = 3.141592653;
1635   sprintf (buf, "%Lg", f);
1636   return (strncmp ("3.14159", buf, 7));]])],
1637                               gdb_cv_printf_has_long_double=yes,
1638                               gdb_cv_printf_has_long_double=no,
1639                               gdb_cv_printf_has_long_double=no)])
1640 if test $gdb_cv_printf_has_long_double = yes; then
1641   AC_DEFINE(PRINTF_HAS_LONG_DOUBLE, 1,
1642             [Define to 1 if the "%Lg" format works to print long doubles.])
1643 fi
1644
1645 # Check if the compiler and runtime support scanning long doubles.
1646
1647 AC_CACHE_CHECK([for long double support in scanf],
1648                gdb_cv_scanf_has_long_double,
1649                [AC_RUN_IFELSE([AC_LANG_PROGRAM(
1650 [[#include <stdio.h>]],
1651 [[char *buf = "3.141592653";
1652   long double f = 0;
1653   sscanf (buf, "%Lg", &f);
1654   return !(f > 3.14159 && f < 3.14160);]])],
1655                               gdb_cv_scanf_has_long_double=yes,
1656                               gdb_cv_scanf_has_long_double=no,
1657                               gdb_cv_scanf_has_long_double=no)])
1658 if test $gdb_cv_scanf_has_long_double = yes; then
1659   AC_DEFINE(SCANF_HAS_LONG_DOUBLE, 1,
1660             [Define to 1 if the "%Lg" format works to scan long doubles.])
1661 fi
1662
1663 case ${host_os} in
1664 aix*)
1665   AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
1666     SAVE_LDFLAGS=$LDFLAGS
1667
1668     case $GCC in
1669     yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
1670     *) gdb_cv_bigtoc=-bbigtoc ;;
1671     esac
1672
1673     LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
1674     AC_TRY_LINK([], [int i;], [], [gdb_cv_bigtoc=])
1675     LDFLAGS="${SAVE_LDFLAGS}"
1676   ])
1677   CONFIG_LDFLAGS="${CONFIG_LDFLAGS} ${gdb_cv_bigtoc}"
1678   ;;
1679 esac
1680
1681 AC_MSG_CHECKING(for the dynamic export flag)
1682 dynamic_list=false
1683 if test "${gdb_native}" = yes; then
1684    # The dynamically loaded libthread_db needs access to symbols in the gdb
1685    # executable.  Older GNU ld supports --export-dynamic but --dynamic-list
1686    # may not be supported there.
1687    old_LDFLAGS="$LDFLAGS"
1688    # Older GNU ld supports --export-dynamic but --dynamic-list it does not.
1689    RDYNAMIC="-Wl,--dynamic-list=${srcdir}/proc-service.list"
1690    LDFLAGS="$LDFLAGS $RDYNAMIC"
1691    if test "${have_libpython}" = no; then
1692      AC_TRY_LINK([], [], [dynamic_list=true])
1693    else
1694      # Workaround http://bugs.python.org/issue4434 where static
1695      # libpythonX.Y.a would get its symbols required for
1696      # pythonX.Y/lib-dynload/*.so modules hidden by -Wl,--dynamic-list.
1697      # Problem does not happen for the recommended libpythonX.Y.so linkage.
1698
1699      # Note the workaround for Python
1700      # http://bugs.python.org/issue10112 earlier has removed
1701      # -export-dynamic from PYTHON_LIBS.  That's exactly what we want
1702      # here too, as otherwise it'd make this -Wl,--dynamic-list test
1703      # always pass.
1704      old_CFLAGS="$CFLAGS"
1705      CFLAGS="$CFLAGS $PYTHON_CFLAGS"
1706      old_LIBS="$LIBS"
1707      LIBS="$LIBS $PYTHON_LIBS"
1708      old_CPPFLAGS="$CPPFLAGS"
1709      CPPFLAGS="$CPPFLAGS $PYTHON_CPPFLAGS"
1710      AC_RUN_IFELSE(
1711        [AC_LANG_PROGRAM(
1712          [#include "Python.h"],
1713          [int err;
1714           Py_Initialize ();
1715           err = PyRun_SimpleString ("import itertools\n");
1716           Py_Finalize ();
1717           return err == 0 ? 0 : 1;])],
1718        [dynamic_list=true], [], [true])
1719      LIBS="$old_LIBS"
1720      CFLAGS="$old_CFLAGS"
1721      CPPFLAGS="$old_CPPFLAGS"
1722    fi
1723    LDFLAGS="$old_LDFLAGS"
1724 fi
1725 if $dynamic_list; then
1726   found="-Wl,--dynamic-list"
1727   RDYNAMIC='-Wl,--dynamic-list=$(srcdir)/proc-service.list'
1728 else
1729   found="-rdynamic"
1730   RDYNAMIC="-rdynamic"
1731 fi
1732 AC_SUBST(RDYNAMIC)
1733 AC_MSG_RESULT($found)
1734
1735 dnl For certain native configurations, we need to check whether thread
1736 dnl support can be built in or not.
1737 dnl
1738 dnl Note that we only want this if we are both native (host == target),
1739 dnl and not doing a canadian cross build (build == host).
1740
1741 if test ${build} = ${host} -a ${host} = ${target} ; then
1742    case ${host_os} in
1743    aix*)
1744       AC_MSG_CHECKING(for AiX thread debugging library)
1745       AC_CACHE_VAL(gdb_cv_have_aix_thread_debug,
1746                    [AC_TRY_COMPILE([#include <sys/pthdebug.h>],
1747                                    [#ifndef PTHDB_VERSION_3
1748                                     #error
1749                                     #endif],
1750                                    gdb_cv_have_aix_thread_debug=yes,
1751                                    gdb_cv_have_aix_thread_debug=no)])
1752       AC_MSG_RESULT($gdb_cv_have_aix_thread_debug)
1753       if test $gdb_cv_have_aix_thread_debug = yes; then
1754          CONFIG_SRCS="${CONFIG_SRCS} aix-thread.c"
1755          CONFIG_OBS="${CONFIG_OBS} aix-thread.o"
1756          LIBS="$LIBS -lpthdebug"
1757
1758          # Older versions of AIX do not provide the declaration for
1759          # the getthrds function (it appears that it was introduced
1760          # with AIX 6.x).
1761          AC_CHECK_DECLS(getthrds, [], [], [[#include <procinfo.h>]])
1762       fi
1763       ;;
1764    esac
1765    AC_SUBST(CONFIG_LDFLAGS)
1766 fi
1767
1768 dnl See if we have a thread_db header file that has TD_NOTALLOC and
1769 dnl other error codes.
1770 if test "x$ac_cv_header_thread_db_h" = "xyes"; then
1771    AC_CACHE_CHECK([whether <thread_db.h> has TD_NOTALLOC],
1772                   gdb_cv_thread_db_h_has_td_notalloc,
1773      AC_TRY_COMPILE(
1774        [#include <thread_db.h>],
1775        [int i = TD_NOTALLOC;],
1776        gdb_cv_thread_db_h_has_td_notalloc=yes,
1777        gdb_cv_thread_db_h_has_td_notalloc=no
1778      )
1779    )
1780    AC_CACHE_CHECK([whether <thread_db.h> has TD_VERSION],
1781                   gdb_cv_thread_db_h_has_td_version,
1782      AC_TRY_COMPILE(
1783        [#include <thread_db.h>],
1784        [int i = TD_VERSION;],
1785        gdb_cv_thread_db_h_has_td_version=yes,
1786        gdb_cv_thread_db_h_has_td_version=no
1787      )
1788    )
1789    AC_CACHE_CHECK([whether <thread_db.h> has TD_NOTLS],
1790                   gdb_cv_thread_db_h_has_td_notls,
1791      AC_TRY_COMPILE(
1792        [#include <thread_db.h>],
1793        [int i = TD_NOTLS;],
1794        gdb_cv_thread_db_h_has_td_notls=yes,
1795        gdb_cv_thread_db_h_has_td_notls=no
1796      )
1797    )
1798 fi
1799 if test "x$gdb_cv_thread_db_h_has_td_notalloc" = "xyes"; then
1800   AC_DEFINE(THREAD_DB_HAS_TD_NOTALLOC, 1,
1801             [Define if <thread_db.h> has the TD_NOTALLOC error code.])
1802 fi
1803 if test "x$gdb_cv_thread_db_h_has_td_version" = "xyes"; then
1804   AC_DEFINE(THREAD_DB_HAS_TD_VERSION, 1,
1805             [Define if <thread_db.h> has the TD_VERSION error code.])
1806 fi
1807 if test "x$gdb_cv_thread_db_h_has_td_notls" = "xyes"; then
1808   AC_DEFINE(THREAD_DB_HAS_TD_NOTLS, 1,
1809             [Define if <thread_db.h> has the TD_NOTLS error code.])
1810 fi
1811
1812 dnl Check if we can disable the virtual address space randomization.
1813 dnl The functionality of setarch -R.
1814 AC_CHECK_DECLS([ADDR_NO_RANDOMIZE],,, [#include <sys/personality.h>])
1815 define([PERSONALITY_TEST], [AC_LANG_PROGRAM([#include <sys/personality.h>], [
1816 #      if !HAVE_DECL_ADDR_NO_RANDOMIZE
1817 #       define ADDR_NO_RANDOMIZE 0x0040000
1818 #      endif
1819        /* Test the flag could be set and stays set.  */
1820        personality (personality (0xffffffff) | ADDR_NO_RANDOMIZE);
1821        if (!(personality (personality (0xffffffff)) & ADDR_NO_RANDOMIZE))
1822            return 1])])
1823 AC_RUN_IFELSE([PERSONALITY_TEST],
1824               [have_personality=true],
1825               [have_personality=false],
1826               [AC_LINK_IFELSE([PERSONALITY_TEST],
1827                               [have_personality=true],
1828                               [have_personality=false])])
1829 if $have_personality
1830 then
1831     AC_DEFINE([HAVE_PERSONALITY], 1,
1832               [Define if you support the personality syscall.])
1833 fi
1834
1835 dnl Set the host's .gdbinit filename.
1836 case $host_os in
1837   go32* | *djgpp*)
1838     gdbinit=gdb.ini
1839     ;;
1840   *)
1841     gdbinit=.gdbinit
1842     ;;
1843 esac
1844 AC_DEFINE_UNQUOTED(GDBINIT,"$gdbinit",[The .gdbinit filename.])
1845
1846 dnl Handle optional features that can be enabled.
1847
1848 # Support for --with-sysroot is a copy of GDB_AC_WITH_DIR,
1849 # except that the argument to --with-sysroot is optional.
1850 # --with-sysroot (or --with-sysroot=yes) sets the default sysroot path.
1851 if test "x$with_sysroot" = xyes; then
1852   with_sysroot="${exec_prefix}/${target_alias}/sys-root"
1853 fi
1854 AC_ARG_WITH(sysroot,
1855   AS_HELP_STRING([--with-sysroot@<:@=DIR@:>@],
1856                  [search for usr/lib et al within DIR]),
1857   [TARGET_SYSTEM_ROOT=$withval], [TARGET_SYSTEM_ROOT=])
1858 AC_DEFINE_DIR(TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT,
1859               [search for usr/lib et al within DIR])
1860 AC_SUBST(TARGET_SYSTEM_ROOT)
1861 GDB_AC_DEFINE_RELOCATABLE(TARGET_SYSTEM_ROOT, sysroot, ${ac_define_dir})
1862
1863 GDB_AC_WITH_DIR(SYSTEM_GDBINIT, system-gdbinit,
1864     [automatically load a system-wide gdbinit file],
1865     [])
1866
1867 AM_GDB_WARNINGS
1868
1869 # In the Cygwin environment, we need some additional flags.
1870 AC_CACHE_CHECK([for cygwin], gdb_cv_os_cygwin,
1871 [AC_EGREP_CPP(^lose$, [
1872 #if defined (__CYGWIN__) || defined (__CYGWIN32__)
1873 lose
1874 #endif],[gdb_cv_os_cygwin=yes],[gdb_cv_os_cygwin=no])])
1875
1876
1877 dnl Figure out which of the many generic ser-*.c files the _host_ supports.
1878 SER_HARDWIRE="ser-base.o ser-unix.o ser-pipe.o ser-tcp.o"
1879 case ${host} in
1880   *go32* ) SER_HARDWIRE=ser-go32.o ;;
1881   *djgpp* ) SER_HARDWIRE=ser-go32.o ;;
1882   *mingw32*) SER_HARDWIRE="ser-base.o ser-tcp.o ser-mingw.o" ;;
1883 esac
1884 AC_SUBST(SER_HARDWIRE)
1885
1886 # libreadline needs libuser32.a in a cygwin environment
1887 WIN32LIBS=
1888 if test x$gdb_cv_os_cygwin = xyes; then
1889     WIN32LIBS="-luser32"
1890     case "${target}" in
1891         *cygwin*) WIN32LIBS="$WIN32LIBS -limagehlp"
1892         ;;
1893     esac
1894 fi
1895
1896 # The ser-tcp.c module requires sockets.
1897 case ${host} in
1898   *mingw32*)
1899     AC_DEFINE(USE_WIN32API, 1,
1900               [Define if we should use the Windows API, instead of the
1901                POSIX API.  On Windows, we use the Windows API when
1902                building for MinGW, but the POSIX API when building
1903                for Cygwin.])
1904     WIN32LIBS="$WIN32LIBS -lws2_32"
1905     ;;
1906 esac
1907 AC_SUBST(WIN32LIBS)
1908
1909 # Add ELF support to GDB, but only if BFD includes ELF support.
1910 GDB_AC_CHECK_BFD([for ELF support in BFD], gdb_cv_var_elf,
1911                  [bfd_get_elf_phdr_upper_bound (NULL)], elf-bfd.h)
1912 if test $gdb_cv_var_elf = yes; then
1913   CONFIG_OBS="$CONFIG_OBS elfread.o stap-probe.o dtrace-probe.o"
1914   AC_DEFINE(HAVE_ELF, 1,
1915             [Define if ELF support should be included.])
1916   # -ldl is provided by bfd/Makfile.am (LIBDL) <PLUGINS>.
1917   if test "$plugins" = "yes"; then
1918     AC_SEARCH_LIBS(dlopen, dl)
1919   fi
1920 fi
1921
1922 # Add macho support to GDB, but only if BFD includes it.
1923 GDB_AC_CHECK_BFD([for Mach-O support in BFD], gdb_cv_var_macho,
1924                  [bfd_mach_o_lookup_command (NULL, 0, NULL)], mach-o.h)
1925 if test $gdb_cv_var_macho = yes; then
1926   CONFIG_OBS="$CONFIG_OBS machoread.o"
1927 fi
1928
1929 # Add any host-specific objects to GDB.
1930 CONFIG_OBS="${CONFIG_OBS} ${gdb_host_obs}"
1931
1932 # If building on ELF, look for lzma support for embedded compressed debug info.
1933 if test $gdb_cv_var_elf = yes; then
1934   AC_ARG_WITH(lzma,
1935     AS_HELP_STRING([--with-lzma], [support lzma compression (auto/yes/no)]),
1936     [], [with_lzma=auto])
1937   AC_MSG_CHECKING([whether to use lzma])
1938   AC_MSG_RESULT([$with_lzma])
1939
1940   if test "${with_lzma}" != no; then
1941     AC_LIB_HAVE_LINKFLAGS([lzma], [], [#include "lzma.h"],
1942                           [lzma_index_iter iter;
1943                            lzma_index_iter_init (&iter, 0);
1944                            lzma_mf_is_supported (LZMA_MF_HC3);])
1945     if test "$HAVE_LIBLZMA" != yes; then
1946       if test "$with_lzma" = yes; then
1947         AC_MSG_ERROR([missing liblzma for --with-lzma])
1948       fi
1949     fi
1950   fi
1951 fi
1952
1953 LIBGUI="../libgui/src/libgui.a"
1954 GUI_CFLAGS_X="-I${srcdir}/../libgui/src"
1955 AC_SUBST(LIBGUI)
1956 AC_SUBST(GUI_CFLAGS_X)
1957
1958 WIN32LDAPP=
1959 AC_SUBST(WIN32LIBS)
1960 AC_SUBST(WIN32LDAPP)
1961
1962 case "${host}" in
1963 *-*-cygwin* | *-*-mingw* )
1964     configdir="win"
1965     ;;
1966 *)
1967     configdir="unix"
1968     ;;
1969 esac
1970
1971 GDBTKLIBS=
1972 if test "${enable_gdbtk}" = "yes"; then
1973
1974     # Gdbtk must have an absolute path to srcdir in order to run
1975     # properly when not installed.
1976     here=`pwd`
1977     cd ${srcdir}
1978     GDBTK_SRC_DIR=`pwd`
1979     cd $here
1980
1981     SC_PATH_TCLCONFIG
1982
1983     # If $no_tk is nonempty, then we can't do Tk, and there is no
1984     # point to doing Tcl.
1985     SC_PATH_TKCONFIG
1986
1987     if test -z "${no_tcl}" -a -z "${no_tk}"; then
1988         SC_LOAD_TCLCONFIG
1989
1990         # Check for in-tree tcl
1991         here=`pwd`
1992         cd ${srcdir}/..
1993         topdir=`pwd`
1994         cd ${here}
1995
1996         intree="no"
1997         if test "${TCL_SRC_DIR}" = "${topdir}/tcl"; then
1998           intree="yes"
1999         fi
2000
2001         # Find Tcl private headers
2002         if test x"${intree}" = xno; then
2003           CY_AC_TCL_PRIVATE_HEADERS
2004           TCL_INCLUDE="${TCL_INCLUDE_SPEC} ${TCL_PRIVATE_INCLUDE}"
2005           TCL_LIBRARY="${TCL_LIB_SPEC}"
2006           TCL_DEPS=""
2007         else
2008           # If building tcl in the same src tree, private headers
2009           # are not needed, but we need to be sure to use the right
2010           # headers library
2011           TCL_INCLUDE="-I${TCL_SRC_DIR}/generic"
2012           TCL_LIBRARY="${TCL_BUILD_LIB_SPEC}"
2013           TCL_DEPS="../tcl/${configdir}${TCL_LIB_FILE}"
2014         fi
2015         AC_SUBST(TCL_INCLUDE)
2016         AC_SUBST(TCL_LIBRARY)
2017         AC_SUBST(TCL_DEPS)
2018
2019         SC_LOAD_TKCONFIG
2020
2021         # Check for in-tree Tk
2022         intree="no"
2023         if test "${TK_SRC_DIR}" = "${topdir}/tk"; then
2024           intree="yes"
2025         fi
2026
2027         # Find Tk private headers
2028         if test x"${intree}" = xno; then
2029           CY_AC_TK_PRIVATE_HEADERS
2030           TK_INCLUDE="${TK_INCLUDE_SPEC} ${TK_PRIVATE_INCLUDE}"
2031           TK_LIBRARY=${TK_LIB_SPEC}
2032           TK_DEPS=""
2033         else
2034           TK_INCLUDE="-I${TK_SRC_DIR}/generic"
2035           TK_LIBRARY="${TK_BUILD_LIB_SPEC}"
2036           TK_DEPS="../tk/${configdir}/${TK_LIB_FILE}"
2037         fi
2038         AC_SUBST(TK_INCLUDE)
2039         AC_SUBST(TK_LIBRARY)
2040         AC_SUBST(TK_DEPS)
2041         AC_SUBST(TK_XINCLUDES)
2042
2043         ENABLE_CFLAGS="${ENABLE_CFLAGS} \$(SUBDIR_GDBTK_CFLAGS)"
2044
2045         # Include some libraries that Tcl and Tk want.
2046         TCL_LIBS='$(LIBGUI) $(TK) $(TCL) $(X11_LDFLAGS) $(X11_LIBS)'
2047         # Yes, the ordering seems wrong here.  But it isn't.
2048         # TK_LIBS is the list of libraries that need to be linked
2049         # after Tcl/Tk.  Note that this isn't put into LIBS.  If it
2050         # were in LIBS then any link tests after this point would
2051         # try to include things like `$(LIBGUI)', which wouldn't work.
2052         GDBTKLIBS="${TCL_LIBS} ${TK_LIBS}"
2053
2054         CONFIG_OBS="${CONFIG_OBS} \$(SUBDIR_GDBTK_OBS)"
2055         CONFIG_DEPS="${CONFIG_DEPS} \$(SUBDIR_GDBTK_DEPS)"
2056         CONFIG_SRCS="${CONFIG_SRCS} \$(SUBDIR_GDBTK_SRCS)"
2057         CONFIG_ALL="${CONFIG_ALL} all-gdbtk"
2058         CONFIG_CLEAN="${CONFIG_CLEAN} clean-gdbtk"
2059         CONFIG_INSTALL="${CONFIG_INSTALL} install-gdbtk"
2060         CONFIG_UNINSTALL="${CONFIG_UNINSTALL} uninstall-gdbtk"
2061
2062         if test x$gdb_cv_os_cygwin = xyes; then
2063           WIN32LIBS="${WIN32LIBS} -lshell32 -lgdi32 -lcomdlg32 -ladvapi32"
2064           WIN32LDAPP="-Wl,--subsystem,console"
2065           CONFIG_OBS="${CONFIG_OBS} gdbres.o"
2066         fi
2067
2068         AC_CONFIG_SUBDIRS(gdbtk)
2069     fi
2070 fi
2071
2072 AC_SUBST(X_CFLAGS)
2073 AC_SUBST(X_LDFLAGS)
2074 AC_SUBST(X_LIBS)
2075 AC_SUBST(GDBTKLIBS)
2076 AC_SUBST(GDBTK_CFLAGS)
2077 AC_SUBST(GDBTK_SRC_DIR)
2078
2079 AC_PATH_X
2080
2081 # Unlike the sim directory, whether a simulator is linked is controlled by
2082 # presence of a gdb_sim definition in the target configure.tgt entry.
2083 # This code just checks for a few cases where we'd like to ignore those
2084 # definitions, even when they're present in the '.mt' file.  These cases
2085 # are when --disable-sim is specified, or if the simulator directory is
2086 # not part of the source tree.
2087 #
2088 AC_ARG_ENABLE(sim,
2089 AS_HELP_STRING([--enable-sim], [link gdb with simulator]),
2090 [echo "enable_sim = $enable_sim";
2091  echo "enableval = ${enableval}";
2092  case "${enableval}" in
2093   yes) ignore_sim=false ;;
2094   no)  ignore_sim=true ;;
2095   *)   ignore_sim=false ;;
2096  esac],
2097 [ignore_sim=false])
2098
2099 if test ! -d "${srcdir}/../sim"; then
2100   ignore_sim=true
2101 fi
2102
2103 SIM=
2104 SIM_OBS=
2105 if test "${ignore_sim}" = "false"; then
2106   if test x"${gdb_sim}" != x ; then
2107     SIM="${gdb_sim}"
2108     SIM_OBS="remote-sim.o"
2109     AC_DEFINE(WITH_SIM, 1, [Define if the simulator is being linked in.])
2110
2111     # Some tdep code should only be compiled in when the ppc sim is
2112     # built.  PR sim/13418.
2113     case $target in
2114       powerpc*-*-*)
2115         AC_DEFINE(WITH_PPC_SIM, 1, [Define if the PPC simulator is being linked in.])
2116         ;;
2117     esac
2118   fi
2119 fi
2120 AC_SUBST(SIM)
2121 AC_SUBST(SIM_OBS)
2122
2123 AC_SUBST(ENABLE_CFLAGS)
2124 AC_SUBST(PROFILE_CFLAGS)
2125
2126 AC_SUBST(CONFIG_OBS)
2127 AC_SUBST(CONFIG_DEPS)
2128 AC_SUBST(CONFIG_SRCS)
2129 AC_SUBST(CONFIG_ALL)
2130 AC_SUBST(CONFIG_CLEAN)
2131 AC_SUBST(CONFIG_INSTALL)
2132 AC_SUBST(CONFIG_UNINSTALL)
2133
2134 # List of host floatformats.
2135 AC_DEFINE_UNQUOTED(GDB_HOST_FLOAT_FORMAT,$gdb_host_float_format,[Host float floatformat])
2136 AC_DEFINE_UNQUOTED(GDB_HOST_DOUBLE_FORMAT,$gdb_host_double_format,[Host double floatformat])
2137 AC_DEFINE_UNQUOTED(GDB_HOST_LONG_DOUBLE_FORMAT,$gdb_host_long_double_format,[Host long double floatformat])
2138
2139 # target_subdir is used by the testsuite to find the target libraries.
2140 target_subdir=
2141 if test "${host}" != "${target}"; then
2142     target_subdir="${target_alias}/"
2143 fi
2144 AC_SUBST(target_subdir)
2145
2146 # Import nat definitions.
2147 nat_makefile_frag=/dev/null
2148 if test "${gdb_native}" = "yes"; then
2149   . ${srcdir}/configure.nat
2150   nativefile=$NAT_FILE
2151 fi
2152
2153 AC_SUBST(NAT_FILE)
2154 AC_SUBST(NATDEPFILES)
2155 AC_SUBST(NAT_CDEPS)
2156 AC_SUBST(LOADLIBES)
2157 AC_SUBST(MH_CFLAGS)
2158 AC_SUBST(XM_CLIBS)
2159 AC_SUBST(NAT_GENERATED_FILES)
2160 AC_SUBST(HAVE_NATIVE_GCORE_HOST)
2161 AC_SUBST_FILE(nat_makefile_frag)
2162
2163 if test x"${gdb_osabi}" != x ; then
2164     AC_DEFINE_UNQUOTED(GDB_OSABI_DEFAULT, $gdb_osabi,
2165                        [Define to the default OS ABI for this configuration.])
2166 fi
2167
2168 AC_ARG_ENABLE(gdbserver,
2169 AS_HELP_STRING([--enable-gdbserver],
2170                [automatically build gdbserver (yes/no/auto, default is auto)]),
2171 [case "${enableval}" in
2172   yes| no|auto) ;;
2173   *) AC_MSG_ERROR(bad value ${enableval} for --enable-gdbserver option) ;;
2174 esac],[enable_gdbserver=auto])
2175
2176 # We only build gdbserver automatically in a native configuration, and
2177 # only if the user did not explicitly disable its build.
2178 if test "$gdb_native" = "yes" -a "$enable_gdbserver" != "no"; then
2179   AC_MSG_CHECKING(whether gdbserver is supported on this host)
2180   if test "x$build_gdbserver" = xyes; then
2181     AC_MSG_RESULT(yes)
2182     AC_CONFIG_SUBDIRS(gdbserver)
2183     gdbserver_build_enabled=yes
2184   else
2185     AC_MSG_RESULT(no)
2186   fi
2187 fi
2188
2189 # If the user explicitly request the gdbserver to be built, verify that
2190 # we were in fact able to enable it.
2191 if test "$enable_gdbserver" = "yes" -a "$gdbserver_build_enabled" != "yes"; then
2192   AC_MSG_ERROR(Automatic gdbserver build is not supported for this configuration)
2193 fi
2194
2195 # Check for babeltrace and babeltrace-ctf
2196 AC_ARG_WITH(babeltrace,
2197   AC_HELP_STRING([--with-babeltrace], [include babeltrace support (auto/yes/no)]),
2198   [], [with_babeltrace=auto])
2199 AC_MSG_CHECKING([whether to use babeltrace])
2200 AC_MSG_RESULT([$with_babeltrace])
2201
2202 if test "x$with_babeltrace" = "xno"; then
2203   AC_MSG_WARN([babletrace support disabled; GDB is unable to read CTF data.])
2204 else
2205   # Append -Werror to CFLAGS so that configure can catch the warning
2206   # "assignment from incompatible pointer type", which is related to
2207   # the babeltrace change from 1.0.3 to 1.1.0.  Babeltrace 1.1.0 works
2208   # in GDB, while babeltrace 1.0.3 is broken.
2209   # AC_LIB_HAVE_LINKFLAGS may modify CPPFLAGS in it, so it should be
2210   # safe to save and restore CFLAGS here.
2211   saved_CFLAGS=$CFLAGS
2212   CFLAGS="$CFLAGS -Werror"
2213   AC_LIB_HAVE_LINKFLAGS([babeltrace], [babeltrace-ctf],
2214                         [#include <babeltrace/babeltrace.h>
2215                          #include <babeltrace/ctf/events.h>
2216                          #include <babeltrace/ctf/iterator.h>],
2217                         [struct bt_iter_pos *pos = bt_iter_get_pos (bt_ctf_get_iter (NULL));
2218                         struct bt_ctf_event *event = NULL;
2219                         const struct bt_definition *scope;
2220
2221                         pos->type = BT_SEEK_BEGIN;
2222                         bt_iter_set_pos (bt_ctf_get_iter (NULL), pos);
2223                         scope = bt_ctf_get_top_level_scope (event,
2224                                                            BT_STREAM_EVENT_HEADER);
2225                         bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id"));
2226                         ])
2227   CFLAGS=$saved_CFLAGS
2228
2229   if test "$HAVE_LIBBABELTRACE" != yes; then
2230      if test "$with_babeltrace" = yes; then
2231        AC_MSG_ERROR([babeltrace is missing or unusable])
2232      else
2233        AC_MSG_WARN([babeltrace is missing or unusable; GDB is unable to read CTF data.])
2234      fi
2235   fi
2236 fi
2237
2238 # If nativefile (NAT_FILE) is not set in configure.nat, we link to an
2239 # empty version.
2240
2241 files=
2242 links=
2243
2244 rm -f nm.h
2245 if test "${nativefile}" != ""; then
2246     case "${nativefile}" in
2247       nm-*.h ) GDB_NM_FILE="config/${gdb_host_cpu}/${nativefile}" ;;
2248       * ) GDB_NM_FILE="${nativefile}"
2249     esac
2250     files="${files} ${GDB_NM_FILE}"
2251     links="${links} nm.h"
2252     AC_DEFINE_UNQUOTED(GDB_NM_FILE, "${GDB_NM_FILE}", [nativefile])
2253 fi
2254 AC_SUBST(GDB_NM_FILE)
2255
2256 dnl Add dependency for xsltproc if building with maintainer-mode enabled.
2257 AC_PATH_PROGS(XSLTPROC, xsltproc, missing)
2258 if test "x$USE_MAINTAINER_MODE" = xyes; then
2259   if test "${XSLTPROC}" = missing; then
2260     AC_ERROR(unable to find xsltproc.  maintainer-mode requires xsltproc.)
2261   fi
2262 fi
2263 AC_SUBST(XSLTPROC)
2264
2265 AC_LINK_FILES($files, $links)
2266
2267 dnl Check for exe extension set on certain hosts (e.g. Win32)
2268 AC_EXEEXT
2269
2270 dnl  Detect the character set used by this host.
2271 dnl  At the moment, we just assume it's UTF-8.
2272 AC_DEFINE(GDB_DEFAULT_HOST_CHARSET, "UTF-8",
2273           [Define to be a string naming the default host character set.])
2274
2275 if $development; then
2276   AC_DEFINE(GDB_SELF_TEST, 1,
2277             [Define if self-testing features should be enabled])
2278   CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_UNITTESTS_OBS) common/selftest.o selftest-arch.o"
2279   CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_UNITTESTS_SRCS) common/selftest.c selftest-arch.c"
2280 fi
2281
2282 GDB_AC_TRANSFORM([gdb], [GDB_TRANSFORM_NAME])
2283 GDB_AC_TRANSFORM([gcore], [GCORE_TRANSFORM_NAME])
2284 AC_CONFIG_FILES([gcore], [chmod +x gcore])
2285 AC_CONFIG_FILES([Makefile gdb-gdb.gdb gdb-gdb.py doc/Makefile data-directory/Makefile],
2286 [
2287 case x$CONFIG_HEADERS in
2288 xconfig.h:config.in)
2289 echo > stamp-h ;;
2290 esac
2291 ])
2292
2293 AC_OUTPUT