gdb/configure.ac

   1 dnl Autoconf configure script for GDB, the GNU debugger.
   2 dnl Copyright (C) 1995-2015 Free Software Foundation, Inc.
   3 dnl
   4 dnl This file is part of GDB.
   5 dnl
   6 dnl This program is free software; you can redistribute it and/or modify
   7 dnl it under the terms of the GNU General Public License as published by
   8 dnl the Free Software Foundation; either version 3 of the License, or
   9 dnl (at your option) any later version.
  10 dnl
  11 dnl This program is distributed in the hope that it will be useful,
  12 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 dnl GNU General Public License for more details.
  15 dnl
  16 dnl You should have received a copy of the GNU General Public License
  17 dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 dnl Process this file with autoconf to produce a configure script.
  20
  21 AC_PREREQ(2.59)dnl
  22 AC_INIT(main.c)
  23 AC_CONFIG_HEADER(config.h:config.in)
  24 AM_MAINTAINER_MODE
  25
  26 # Set the 'development' global.
  27 . $srcdir/../bfd/development.sh
  28
  29 AC_PROG_CC
  30 AC_PROG_CXX
  31
  32 AC_USE_SYSTEM_EXTENSIONS
  33 ACX_LARGEFILE
  34 AM_PROG_CC_STDC
  35 AM_PROG_INSTALL_STRIP
  36
  37 AC_CONFIG_AUX_DIR(..)
  38 AC_CANONICAL_SYSTEM
  39 AC_ARG_PROGRAM
  40
  41 # See if we are building with C++, and substitute COMPILER.
  42 GDB_AC_BUILD_WITH_CXX
  43
  44 # Dependency checking.
  45 ZW_CREATE_DEPDIR
  46 ZW_PROG_COMPILER_DEPENDENCIES([CC])
  47
  48 # Check for the 'make' the user wants to use.
  49 AC_CHECK_PROGS(MAKE, make)
  50 MAKE_IS_GNU=
  51 case "`$MAKE --version 2>&1 | sed 1q`" in
  52   *GNU*)
  53     MAKE_IS_GNU=yes
  54     ;;
  55 esac
  56 AM_CONDITIONAL(GMAKE, test "$MAKE_IS_GNU" = yes)
  57 AC_PROG_MAKE_SET
  58
  59 gnulib_extra_configure_args=
  60 # If large-file support is disabled, make sure gnulib does the same.
  61 if test "$enable_largefile" = no; then
  62 gnulib_extra_configure_args="$gnulib_extra_configure_args --disable-largefile"
  63 fi
  64
  65 # Configure gnulib.  We need to build gnulib under some other
  66 # directory not "gnulib", to avoid the problem of both GDB and
  67 # GDBserver wanting to build it in the same directory, when building
  68 # in the source dir.
  69 ACX_CONFIGURE_DIR(["gnulib"], ["build-gnulib"],
  70                   ["$gnulib_extra_configure_args"])
  71
  72 dnl List of object files and targets accumulated by configure.
  73
  74 CONFIG_OBS=
  75 CONFIG_DEPS=
  76 CONFIG_SRCS=
  77 ENABLE_CFLAGS=
  78
  79 CONFIG_ALL=
  80 CONFIG_CLEAN=
  81 CONFIG_INSTALL=
  82 CONFIG_UNINSTALL=
  83
  84 dnl Set up for gettext.
  85 ZW_GNU_GETTEXT_SISTER_DIR
  86
  87 localedir='${datadir}/locale'
  88 AC_SUBST(localedir)
  89
  90 if test x"$USE_NLS" = xyes; then
  91    CONFIG_ALL="$CONFIG_ALL all-po"
  92    CONFIG_CLEAN="$CONFIG_CLEAN clean-po"
  93    CONFIG_INSTALL="$CONFIG_INSTALL install-po"
  94    CONFIG_UNINSTALL="$CONFIG_UNINSTALL uninstall-po"
  95 fi
  96
  97 GNULIB=build-gnulib/import
  98
  99 # For Makefile dependencies.
 100 GNULIB_STDINT_H=
 101 if test x"$STDINT_H" != x; then
 102   GNULIB_STDINT_H=$GNULIB/$STDINT_H
 103 fi
 104 AC_SUBST(GNULIB_STDINT_H)
 105
 106 PACKAGE=gdb
 107 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of this package. ])
 108 AC_SUBST(PACKAGE)
 109
 110 # We never need to detect it in this sub-configure.
 111 # But preserve it for config.status --recheck.
 112 AC_ARG_VAR(MAKEINFO,
 113   [Parent configure detects if it is of sufficient version.])
 114 AC_ARG_VAR(MAKEINFOFLAGS,
 115   [Parameters for MAKEINFO.])
 116
 117 MAKEINFO_EXTRA_FLAGS=""
 118 AC_CACHE_CHECK([whether $MAKEINFO supports @click], gdb_cv_have_makeinfo_click,
 119   [echo '@clicksequence{a @click{} b}' >conftest.texinfo
 120   if eval "$MAKEINFO conftest.texinfo >&5 2>&5"; then
 121     gdb_cv_have_makeinfo_click=yes
 122   else
 123     gdb_cv_have_makeinfo_click=no
 124   fi])
 125 if test x"$gdb_cv_have_makeinfo_click" = xyes; then
 126   MAKEINFO_EXTRA_FLAGS="$MAKEINFO_EXTRA_FLAGS -DHAVE_MAKEINFO_CLICK"
 127 fi
 128 AC_SUBST(MAKEINFO_EXTRA_FLAGS)
 129
 130 GDB_AC_WITH_DIR(DEBUGDIR, separate-debug-dir,
 131     [look for global separate debug info in this path @<:@LIBDIR/debug@:>@],
 132     [${libdir}/debug])
 133
 134 # We can't pass paths as command line arguments.
 135 # Mingw32 tries to be clever and will convert the paths for us.
 136 # For example -DBINDIR="/usr/local/bin" passed on the command line may get
 137 # converted to -DBINDIR="E:/msys/mingw32/msys/1.0/local/bin".
 138 # This breaks GDB's relocatable path conversions since paths passed in
 139 # config.h would not get so translated, the path prefixes no longer match.
 140 AC_DEFINE_DIR(BINDIR, bindir, [Directory of programs.])
 141
 142 # GDB's datadir relocation
 143
 144 GDB_AC_WITH_DIR(GDB_DATADIR, gdb-datadir,
 145     [look for global separate data files in this path @<:@DATADIR/gdb@:>@],
 146     [${datadir}/gdb])
 147
 148 AC_ARG_WITH(relocated-sources,
 149 AS_HELP_STRING([--with-relocated-sources=PATH], [automatically relocate this path for source files]),
 150 [reloc_srcdir="${withval}"
 151  AC_DEFINE_DIR(RELOC_SRCDIR, reloc_srcdir,
 152               [Relocated directory for source files. ])
 153 ])
 154
 155 AC_MSG_CHECKING([for default auto-load directory])
 156 AC_ARG_WITH(auto-load-dir,
 157 AS_HELP_STRING([--with-auto-load-dir=PATH],
 158   [directories from which to load auto-loaded scripts @<:@$debugdir:$datadir/auto-load@:>@]),,
 159   [with_auto_load_dir='$debugdir:$datadir/auto-load'])
 160 escape_dir=`echo $with_auto_load_dir | sed 's/[[$]]\(datadir\|debugdir\)\>/\\\\\\\\\\\\&/g'`
 161 AC_DEFINE_DIR(AUTO_LOAD_DIR, escape_dir,
 162               [Directories from which to load auto-loaded scripts.])
 163 AC_MSG_RESULT([$with_auto_load_dir])
 164
 165 AC_MSG_CHECKING([for default auto-load safe-path])
 166 AC_ARG_WITH(auto-load-safe-path,
 167 AS_HELP_STRING([--with-auto-load-safe-path=PATH],
 168   [directories safe to hold auto-loaded files @<:@--with-auto-load-dir@:>@])
 169 AS_HELP_STRING([--without-auto-load-safe-path],
 170                [do not restrict auto-loaded files locations]),
 171     [if test "$with_auto_load_safe_path" = "no"; then
 172      with_auto_load_safe_path="/"
 173      fi],
 174 [with_auto_load_safe_path="$with_auto_load_dir"])
 175 escape_dir=`echo $with_auto_load_safe_path | sed 's/[[$]]\(datadir\|debugdir\)\>/\\\\\\\\\\\\&/g'`
 176 AC_DEFINE_DIR(AUTO_LOAD_SAFE_PATH, escape_dir,
 177               [Directories safe to hold auto-loaded files.])
 178 AC_MSG_RESULT([$with_auto_load_safe_path])
 179
 180 AC_CONFIG_SUBDIRS(testsuite)
 181
 182 # Check whether to support alternative target configurations
 183 AC_ARG_ENABLE(targets,
 184 AS_HELP_STRING([--enable-targets=TARGETS], [alternative target configurations]),
 185 [case "${enableval}" in
 186   yes | "") AC_ERROR(enable-targets option must specify target names or 'all')
 187             ;;
 188   no)       enable_targets= ;;
 189   *)        enable_targets=$enableval ;;
 190 esac])
 191
 192 # Check whether to enable 64-bit support on 32-bit hosts
 193 AC_ARG_ENABLE(64-bit-bfd,
 194 AS_HELP_STRING([--enable-64-bit-bfd], [64-bit support (on hosts with narrower word sizes)]),
 195 [case "${enableval}" in
 196   yes)  want64=true  ;;
 197   no)   want64=false ;;
 198   *)    AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;;
 199 esac],[want64=false])dnl
 200
 201 # Provide defaults for some variables set by the per-host and per-target
 202 # configuration.
 203 gdb_host_obs=posix-hdep.o
 204
 205 if test "${target}" = "${host}"; then
 206   gdb_native=yes
 207 else
 208   gdb_native=no
 209 fi
 210
 211 . $srcdir/configure.host
 212
 213 # Add in the common host objects.
 214 . $srcdir/common/common.host
 215 gdb_host_obs="$gdb_host_obs $common_host_obs"
 216
 217 # Accumulate some settings from configure.tgt over all enabled targets
 218
 219 TARGET_OBS=
 220 all_targets=
 221 HAVE_NATIVE_GCORE_TARGET=
 222
 223 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
 224 do
 225   if test "$targ_alias" = "all"; then
 226     all_targets=true
 227   else
 228     # Canonicalize the secondary target names.
 229     result=`$ac_config_sub $targ_alias 2>/dev/null`
 230     if test -n "$result"; then
 231         targ=$result
 232     else
 233         targ=$targ_alias
 234     fi
 235
 236     . ${srcdir}/configure.tgt
 237
 238     AS_IF([test -z "${gdb_target_obs}"],
 239       [AC_MSG_ERROR([configuration ${targ} is unsupported.])])
 240
 241     # Target-specific object files
 242     for i in ${gdb_target_obs}; do
 243         case " $TARGET_OBS " in
 244         *" ${i} "*) ;;
 245         *)
 246           TARGET_OBS="$TARGET_OBS ${i}"
 247           ;;
 248         esac
 249     done
 250
 251     # Check whether this target needs 64-bit CORE_ADDR
 252     if test x${want64} = xfalse; then
 253       . ${srcdir}/../bfd/config.bfd
 254     fi
 255
 256     # Check whether this target is native and supports gcore.
 257     if test $gdb_native = yes -a "$targ_alias" = "$target_alias" \
 258        && $gdb_have_gcore; then
 259       HAVE_NATIVE_GCORE_TARGET=1
 260     fi
 261   fi
 262 done
 263
 264 if test x${all_targets} = xtrue; then
 265
 266   # We want all 64-bit targets if we either:
 267   #  - run on a 64-bit host  or
 268   #  - already require 64-bit support for some other target  or
 269   #  - the --enable-64-bit-bfd option was supplied
 270   # Otherwise we only support all 32-bit targets.
 271   #
 272   # NOTE: This test must be in sync with the corresponding
 273   #       tests in BFD!
 274
 275   if test x${want64} = xfalse; then
 276     AC_CHECK_SIZEOF(long)
 277     if test "x${ac_cv_sizeof_long}" = "x8"; then
 278       want64=true
 279     fi
 280   fi
 281   if test x${want64} = xtrue; then
 282     TARGET_OBS='$(ALL_TARGET_OBS) $(ALL_64_TARGET_OBS)'
 283   else
 284     TARGET_OBS='$(ALL_TARGET_OBS)'
 285   fi
 286 fi
 287
 288 AC_SUBST(TARGET_OBS)
 289 AC_SUBST(HAVE_NATIVE_GCORE_TARGET)
 290
 291 # For other settings, only the main target counts.
 292 gdb_sim=
 293 gdb_osabi=
 294 build_gdbserver=
 295 targ=$target; . ${srcdir}/configure.tgt
 296
 297 # Fetch the default architecture and default target vector from BFD.
 298 targ=$target; . $srcdir/../bfd/config.bfd
 299
 300 # We only want the first architecture, so strip off the others if
 301 # there is more than one.
 302 targ_archs=`echo $targ_archs | sed 's/ .*//'`
 303
 304 if test "x$targ_archs" != x; then
 305   AC_DEFINE_UNQUOTED(DEFAULT_BFD_ARCH, $targ_archs,
 306     [Define to BFD's default architecture. ])
 307 fi
 308 if test "x$targ_defvec" != x; then
 309   AC_DEFINE_UNQUOTED(DEFAULT_BFD_VEC, $targ_defvec,
 310     [Define to BFD's default target vector. ])
 311 fi
 312
 313 # The CLI cannot be disabled yet, but may be in the future.
 314
 315 # Enable CLI.
 316 AC_ARG_ENABLE(gdbcli,
 317 AS_HELP_STRING([--disable-gdbcli], [disable command-line interface (CLI)]),
 318   [case $enableval in
 319     yes)
 320       ;;
 321     no)
 322       AC_MSG_ERROR([the command-line interface cannot be disabled yet]) ;;
 323     *)
 324       AC_MSG_ERROR([bad value $enableval for --enable-gdbcli]) ;;
 325   esac],
 326   [enable_gdbcli=yes])
 327 if test x"$enable_gdbcli" = xyes; then
 328   if test -d $srcdir/cli; then
 329     CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_CLI_OBS)"
 330     CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_CLI_DEPS)"
 331     CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_CLI_SRCS)"
 332     ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_CLI_CFLAGS)"
 333   fi
 334 fi
 335
 336 # Enable MI.
 337 AC_ARG_ENABLE(gdbmi,
 338 AS_HELP_STRING([--disable-gdbmi], [disable machine-interface (MI)]),
 339   [case $enableval in
 340     yes | no)
 341       ;;
 342     *)
 343       AC_MSG_ERROR([bad value $enableval for --enable-gdbmi]) ;;
 344   esac],
 345   [enable_gdbmi=yes])
 346 if test x"$enable_gdbmi" = xyes; then
 347   if test -d $srcdir/mi; then
 348     CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_MI_OBS)"
 349     CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_MI_DEPS)"
 350     CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_MI_SRCS)"
 351     ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_MI_CFLAGS)"
 352   fi
 353 fi
 354
 355 # Enable TUI.
 356 AC_ARG_ENABLE(tui,
 357 AS_HELP_STRING([--enable-tui], [enable full-screen terminal user interface (TUI)]),
 358   [case $enableval in
 359     yes | no | auto)
 360       ;;
 361     *)
 362       AC_MSG_ERROR([bad value $enableval for --enable-tui]) ;;
 363   esac],enable_tui=auto)
 364
 365 # Enable gdbtk.
 366 AC_ARG_ENABLE(gdbtk,
 367 AS_HELP_STRING([--enable-gdbtk], [enable gdbtk graphical user interface (GUI)]),
 368   [case $enableval in
 369     yes | no)
 370       ;;
 371     *)
 372       AC_MSG_ERROR([bad value $enableval for --enable-gdbtk]) ;;
 373   esac],
 374   [if test -d $srcdir/gdbtk; then
 375     enable_gdbtk=yes
 376   else
 377     enable_gdbtk=no
 378   fi])
 379 # We unconditionally disable gdbtk tests on selected platforms.
 380 case $host_os in
 381   go32* | windows*)
 382     AC_MSG_WARN([gdbtk isn't supported on $host; disabling])
 383     enable_gdbtk=no ;;
 384 esac
 385
 386 # Libunwind support for ia64.
 387
 388 AC_ARG_WITH(libunwind-ia64,
 389 AS_HELP_STRING([--with-libunwind-ia64],
 390                [use libunwind frame unwinding for ia64 targets]),,
 391             [with_libunwind_ia64=auto])
 392
 393 # Backward compatibility option.
 394 if test "${with_libunwind+set}" = set; then
 395   if test x"$with_libunwind_ia64" != xauto; then
 396     AC_MSG_ERROR(
 397       [option --with-libunwind is deprecated, use --with-libunwind-ia64])
 398   fi
 399   AC_MSG_WARN([option --with-libunwind is deprecated, use --with-libunwind-ia64])
 400   with_libunwind_ia64="$with_libunwind"
 401 fi
 402
 403 case "$with_libunwind_ia64" in
 404   yes | no)
 405     ;;
 406   auto)
 407     AC_CHECK_HEADERS(libunwind-ia64.h)
 408     with_libunwind_ia64=$ac_cv_header_libunwind_ia64_h
 409     ;;
 410   *)
 411     AC_MSG_ERROR(
 412       [bad value $with_libunwind_ia64 for GDB --with-libunwind-ia64 option])
 413     ;;
 414 esac
 415
 416 if test x"$with_libunwind_ia64" = xyes; then
 417   AC_CHECK_HEADERS(libunwind-ia64.h)
 418   if test x"$ac_cv_header_libunwind_ia64_h" != xyes; then
 419     AC_MSG_ERROR([GDB option --with-libunwind-ia64 requires libunwind-ia64.h])
 420   fi
 421   CONFIG_OBS="$CONFIG_OBS ia64-libunwind-tdep.o"
 422   CONFIG_DEPS="$CONFIG_DEPS ia64-libunwind-tdep.o"
 423   CONFIG_SRCS="$CONFIG_SRCS ia64-libunwind-tdep.c"
 424 fi
 425
 426 opt_curses=no
 427 AC_ARG_WITH(curses, AS_HELP_STRING([--with-curses], [use the curses library instead of the termcap library]), opt_curses=$withval)
 428
 429 prefer_curses=no
 430 if test "$opt_curses" = "yes"; then
 431   prefer_curses=yes
 432 fi
 433
 434 # Profiling support.
 435 AC_ARG_ENABLE(profiling,
 436 AS_HELP_STRING([--enable-profiling], [enable profiling of GDB]),
 437   [case $enableval in
 438     yes | no)
 439       ;;
 440     *)
 441       AC_MSG_ERROR([bad value $enableval for --enable-profile]) ;;
 442   esac],
 443  [enable_profiling=no])
 444
 445 AC_CHECK_FUNCS(monstartup _mcleanup)
 446 AC_CACHE_CHECK([for _etext], ac_cv_var__etext,
 447 [AC_TRY_LINK(
 448 [#include <stdlib.h>
 449 extern char _etext;
 450 ],
 451 [free (&_etext);], ac_cv_var__etext=yes, ac_cv_var__etext=no)])
 452 if test $ac_cv_var__etext = yes; then
 453   AC_DEFINE(HAVE__ETEXT, 1,
 454             [Define to 1 if your system has the _etext variable. ])
 455 fi
 456 AC_CACHE_CHECK([for etext], ac_cv_var_etext,
 457 [AC_TRY_LINK(
 458 [#include <stdlib.h>
 459 extern char etext;
 460 ],
 461 [free (&etext);], ac_cv_var_etext=yes, ac_cv_var_etext=no)])
 462 if test $ac_cv_var_etext = yes; then
 463   AC_DEFINE(HAVE_ETEXT, 1,
 464             [Define to 1 if your system has the etext variable. ])
 465 fi
 466 if test "$enable_profiling" = yes ; then
 467   if test $ac_cv_func_monstartup = no || test $ac_cv_func__mcleanup = no; then
 468     AC_MSG_ERROR(--enable-profiling requires monstartup and _mcleanup)
 469   fi
 470   PROFILE_CFLAGS=-pg
 471   OLD_CFLAGS="$CFLAGS"
 472   CFLAGS="$CFLAGS $PROFILE_CFLAGS"
 473
 474   AC_CACHE_CHECK([whether $CC supports -pg], ac_cv_cc_supports_pg,
 475     [AC_TRY_COMPILE([], [int x;], ac_cv_cc_supports_pg=yes,
 476      ac_cv_cc_supports_pg=no)])
 477
 478   if test $ac_cv_cc_supports_pg = no; then
 479     AC_MSG_ERROR(--enable-profiling requires a compiler which supports -pg)
 480   fi
 481
 482   CFLAGS="$OLD_CFLAGS"
 483 fi
 484
 485 ACX_PKGVERSION([GDB])
 486 ACX_BUGURL([http://www.gnu.org/software/gdb/bugs/])
 487 AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
 488 AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
 489
 490 # --------------------- #
 491 # Checks for programs.  #
 492 # --------------------- #
 493
 494 AC_PROG_AWK
 495 AC_PROG_INSTALL
 496 AC_PROG_LN_S
 497 AC_PROG_RANLIB
 498 AC_PROG_YACC
 499
 500 AC_CHECK_TOOL(AR, ar)
 501 AC_CHECK_TOOL(DLLTOOL, dlltool)
 502 AC_CHECK_TOOL(WINDRES, windres)
 503
 504 case $host_os in
 505   gnu*)
 506     # Needed for GNU Hurd hosts.
 507     AC_CHECK_TOOL(MIG, mig)
 508     if test x"$MIG" = x; then
 509       AC_MSG_ERROR([MIG not found but required for $host hosts])
 510     fi
 511     ;;
 512 esac
 513
 514 # ---------------------- #
 515 # Checks for libraries.  #
 516 # ---------------------- #
 517
 518 # We might need to link with -lm; most simulators need it.
 519 AC_CHECK_LIB(m, main)
 520
 521 # We need to link with -lw to get `wctype' on Solaris before Solaris
 522 # 2.6.  Solaris 2.6 and beyond have this function in libc, and have a
 523 # libw that some versions of the GNU linker cannot hanle (GNU ld 2.9.1
 524 # is known to have this problem).  Therefore we avoid libw if we can.
 525 AC_CHECK_FUNC(wctype, [],
 526   [AC_CHECK_LIB(w, wctype)])
 527
 528 # Some systems (e.g. Solaris) have `gethostbyname' in libnsl.
 529 AC_SEARCH_LIBS(gethostbyname, nsl)
 530
 531 # Some systems (e.g. Solaris) have `socketpair' in libsocket.
 532 AC_SEARCH_LIBS(socketpair, socket)
 533
 534 # Link in zlib if we can.  This allows us to read compressed debug sections.
 535 AM_ZLIB
 536
 537 # On FreeBSD we may need libutil for kinfo_getvmmap (used by fbsd-nat.c).
 538 AC_SEARCH_LIBS(kinfo_getvmmap, util,
 539   [AC_DEFINE(HAVE_KINFO_GETVMMAP, 1,
 540             [Define to 1 if your system has the kinfo_getvmmap function. ])])
 541
 542 AM_ICONV
 543
 544 # GDB may fork/exec the iconv program to get the list of supported character
 545 # sets.  Allow the user to specify where to find it.
 546 # There are several factors affecting the choice of option name:
 547 # - There is already --with-libiconv-prefix but we can't use it, it specifies
 548 #   the build-time location of libiconv files.
 549 # - The program we need to find is iconv, which comes with glibc.  The user
 550 #   doesn't necessarily have libiconv installed.  Therefore naming this
 551 #   --with-libiconv-foo feels wrong.
 552 # - We want the path to be relocatable, but GDB_AC_DEFINE_RELOCATABLE is
 553 #   defined to work on directories not files (though it really doesn't know
 554 #   the difference).
 555 # - Calling this --with-iconv-prefix is perceived to cause too much confusion
 556 #   with --with-libiconv-prefix.
 557 # Putting these together is why the option name is --with-iconv-bin.
 558
 559 AC_ARG_WITH(iconv-bin,
 560 AS_HELP_STRING([--with-iconv-bin=PATH], [specify where to find the iconv program]),
 561 [iconv_bin="${withval}"
 562  AC_DEFINE_UNQUOTED([ICONV_BIN], ["${iconv_bin}"],
 563                     [Path of directory of iconv program.])
 564  GDB_AC_DEFINE_RELOCATABLE(ICONV_BIN, iconv, ${iconv_bin})
 565 ])
 566
 567 # For the TUI, we need enhanced curses functionality.
 568 if test x"$enable_tui" != xno; then
 569   prefer_curses=yes
 570 fi
 571
 572 curses_found=no
 573 if test x"$prefer_curses" = xyes; then
 574   # FIXME: kettenis/20040905: We prefer ncurses over the vendor-supplied
 575   # curses library because the latter might not provide all the
 576   # functionality we need.  However, this leads to problems on systems
 577   # where the linker searches /usr/local/lib, but the compiler doesn't
 578   # search /usr/local/include, if ncurses is installed in /usr/local.  A
 579   # default installation of ncurses on alpha*-dec-osf* will lead to such
 580   # a situation.
 581   AC_SEARCH_LIBS(waddstr, [ncurses cursesX curses])
 582
 583   if test "$ac_cv_search_waddstr" != no; then
 584     curses_found=yes
 585   fi
 586 fi
 587
 588 # Check whether we should enable the TUI, but only do so if we really
 589 # can.
 590 if test x"$enable_tui" != xno; then
 591   if test -d $srcdir/tui; then
 592     if test "$curses_found" != no; then
 593       CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_TUI_OBS)"
 594       CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_TUI_DEPS)"
 595       CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_TUI_SRCS)"
 596       ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_TUI_CFLAGS)"
 597     else
 598       if test x"$enable_tui" = xyes; then
 599         AC_MSG_ERROR([no enhanced curses library found; disable TUI])
 600       else
 601         AC_MSG_WARN([no enhanced curses library found; disabling TUI])
 602       fi
 603     fi
 604   fi
 605 fi
 606
 607 # Since GDB uses Readline, we need termcap functionality.  In many
 608 # cases this will be provided by the curses library, but some systems
 609 # have a seperate termcap library, or no curses library at all.
 610
 611 case $host_os in
 612   cygwin*)
 613     if test -d $srcdir/libtermcap; then
 614       LIBS="../libtermcap/libtermcap.a $LIBS"
 615       ac_cv_search_tgetent="../libtermcap/libtermcap.a"
 616     fi ;;
 617   go32* | *djgpp*)
 618     ac_cv_search_tgetent="none required"
 619     ;;
 620 esac
 621
 622 # These are the libraries checked by Readline.
 623 AC_SEARCH_LIBS(tgetent, [termcap tinfo curses ncurses])
 624
 625 if test "$ac_cv_search_tgetent" = no; then
 626   CONFIG_OBS="$CONFIG_OBS stub-termcap.o"
 627 fi
 628
 629 AC_ARG_WITH([system-readline],
 630   [AS_HELP_STRING([--with-system-readline],
 631                   [use installed readline library])])
 632
 633 if test "$with_system_readline" = yes; then
 634   READLINE=-lreadline
 635   READLINE_DEPS=
 636   READLINE_CFLAGS=
 637   READLINE_TEXI_INCFLAG=
 638 else
 639   READLINE='$(READLINE_DIR)/libreadline.a'
 640   READLINE_DEPS='$(READLINE)'
 641   READLINE_CFLAGS='-I$(READLINE_SRC)/..'
 642   READLINE_TEXI_INCFLAG='-I $(READLINE_DIR)'
 643 fi
 644 AC_SUBST(READLINE)
 645 AC_SUBST(READLINE_DEPS)
 646 AC_SUBST(READLINE_CFLAGS)
 647 AC_SUBST(READLINE_TEXI_INCFLAG)
 648
 649 # Generate jit-reader.h
 650
 651 # This is typedeffed to GDB_CORE_ADDR in jit-reader.h
 652 TARGET_PTR=
 653
 654 AC_CHECK_SIZEOF(unsigned long long)
 655 AC_CHECK_SIZEOF(unsigned long)
 656 AC_CHECK_SIZEOF(unsigned __int128)
 657
 658 if test "x${ac_cv_sizeof_unsigned_long}" = "x8"; then
 659   TARGET_PTR="unsigned long"
 660 elif test "x${ac_cv_sizeof_unsigned_long_long}" = "x8"; then
 661   TARGET_PTR="unsigned long long"
 662 elif test "x${ac_cv_sizeof_unsigned___int128}" = "x16"; then
 663   TARGET_PTR="unsigned __int128"
 664 else
 665   TARGET_PTR="unsigned long"
 666 fi
 667
 668 AC_SUBST(TARGET_PTR)
 669 AC_CONFIG_FILES([jit-reader.h:jit-reader.in])
 670
 671 AC_SEARCH_LIBS(dlopen, dl)
 672
 673 GDB_AC_WITH_DIR([JIT_READER_DIR], [jit-reader-dir],
 674                 [directory to load the JIT readers from],
 675                 [${libdir}/gdb])
 676
 677 AC_ARG_WITH(expat,
 678   AS_HELP_STRING([--with-expat], [include expat support (auto/yes/no)]),
 679   [], [with_expat=auto])
 680 AC_MSG_CHECKING([whether to use expat])
 681 AC_MSG_RESULT([$with_expat])
 682
 683 if test "${with_expat}" = no; then
 684   AC_MSG_WARN([expat support disabled; some features may be unavailable.])
 685   HAVE_LIBEXPAT=no
 686 else
 687   AC_LIB_HAVE_LINKFLAGS([expat], [], [#include "expat.h"],
 688                         [XML_Parser p = XML_ParserCreate (0);])
 689   if test "$HAVE_LIBEXPAT" != yes; then
 690     if test "$with_expat" = yes; then
 691       AC_MSG_ERROR([expat is missing or unusable])
 692     else
 693       AC_MSG_WARN([expat is missing or unusable; some features may be unavailable.])
 694     fi
 695   else
 696     save_LIBS=$LIBS
 697     LIBS="$LIBS $LIBEXPAT"
 698     AC_CHECK_FUNCS(XML_StopParser)
 699     LIBS=$save_LIBS
 700   fi
 701 fi
 702
 703 # --------------------- #
 704 # Check for libpython.  #
 705 # --------------------- #
 706
 707 dnl Utility to simplify finding libpython.
 708 dnl $1 = pythonX.Y
 709 dnl $2 = the shell variable to assign the result to
 710 dnl      If libpython is found we store $version here.
 711 dnl $3 = additional flags to add to CPPFLAGS
 712 dnl $4 = additional flags to add to LIBS
 713
 714 AC_DEFUN([AC_TRY_LIBPYTHON],
 715 [
 716   version=$1
 717   define([have_libpython_var],$2)
 718   new_CPPFLAGS=$3
 719   new_LIBS=$4
 720   AC_MSG_CHECKING([for ${version}])
 721   save_CPPFLAGS=$CPPFLAGS
 722   save_LIBS=$LIBS
 723   CPPFLAGS="$CPPFLAGS $new_CPPFLAGS"
 724   LIBS="$LIBS $new_LIBS"
 725   found_usable_python=no
 726   AC_LINK_IFELSE(AC_LANG_PROGRAM([[#include "Python.h"]],
 727                                  [[Py_Initialize ();]]),
 728                  [have_libpython_var=${version}
 729                   found_usable_python=yes
 730                   PYTHON_CPPFLAGS=$new_CPPFLAGS
 731                   PYTHON_LIBS=$new_LIBS])
 732   CPPFLAGS=$save_CPPFLAGS
 733   LIBS=$save_LIBS
 734   AC_MSG_RESULT([${found_usable_python}])
 735 ])
 736
 737 dnl There are several different values for --with-python:
 738 dnl
 739 dnl no -   Don't include python support.
 740 dnl yes -  Include python support, error if it's missing.
 741 dnl        If we find python in $PATH, use it to fetch configure options,
 742 dnl        otherwise assume the compiler can find it with no help from us.
 743 dnl        Python 2.7, 2.6, 2.5, and then 2.4 are tried in turn.
 744 dnl auto - Same as "yes", but if python is missing from the system,
 745 dnl        fall back to "no".
 746 dnl /path/to/python/exec-prefix -
 747 dnl        Use the python located in this directory.
 748 dnl        If /path/to/python/exec-prefix/bin/python exists, use it to find
 749 dnl        the compilation parameters.  Otherwise use
 750 dnl        -I/path/to/python/exec-prefix/include,
 751 dnl        -L/path/to/python/exec-prefix/lib.
 752 dnl        Python 2.7, 2.6, 2.5, and then 2.4 are tried in turn.
 753 dnl        NOTE: This case is historical.  It is what was done for 7.0/7.1
 754 dnl        but is deprecated.
 755 dnl /path/to/python/executable -
 756 dnl        Run python-config.py with this version of python to fetch the
 757 dnl        compilation parameters.
 758 dnl        NOTE: This needn't be the real python executable.
 759 dnl        In a cross-compilation scenario (build != host), this could be
 760 dnl        a shell script that provides what python-config.py provides for
 761 dnl        --ldflags, --includes, --exec-prefix.
 762 dnl python-executable -
 763 dnl        Find python-executable in $PATH, and then handle the same as
 764 dnl        /path/to/python/executable.
 765 dnl
 766 dnl If a python program is specified, it is used to run python-config.py and
 767 dnl is passed --ldflags, --includes, --exec-prefix.
 768
 769 AC_ARG_WITH(python,
 770   AS_HELP_STRING([--with-python@<:@=PYTHON@:>@], [include python support (auto/yes/no/<python-program>)]),
 771   [], [with_python=auto])
 772 AC_MSG_CHECKING([whether to use python])
 773 AC_MSG_RESULT([$with_python])
 774
 775 if test "${with_python}" = no; then
 776   AC_MSG_WARN([python support disabled; some features may be unavailable.])
 777   have_libpython=no
 778 else
 779   case "${with_python}" in
 780   [[\\/]]* | ?:[[\\/]]*)
 781     if test -d ${with_python}; then
 782       # Assume the python binary is ${with_python}/bin/python.
 783       python_prog="${with_python}/bin/python"
 784       python_prefix=
 785       # If python does not exit ${with_python}/bin, then try in
 786       # ${with_python}.  On Windows/MinGW, this is where the Python
 787       # executable is.
 788       if test ! -x "${python_prog}"; then
 789         python_prog="${with_python}/python"
 790         python_prefix=
 791       fi
 792       if test ! -x "${python_prog}"; then
 793         # Fall back to gdb 7.0/7.1 behaviour.
 794         python_prog=missing
 795         python_prefix=${with_python}
 796       fi
 797     elif test -x "${with_python}"; then
 798       # While we can't run python compiled for $host (unless host == build),
 799       # the user could write a script that provides the needed information,
 800       # so we support that.
 801       python_prog=${with_python}
 802       python_prefix=
 803     else
 804       AC_ERROR(invalid value for --with-python)
 805     fi
 806     ;;
 807   */*)
 808     # Disallow --with-python=foo/bar.
 809     AC_ERROR(invalid value for --with-python)
 810     ;;
 811   *)
 812     # The user has either specified auto, yes, or the name of the python
 813     # program assumed to be in $PATH.
 814     python_prefix=
 815     case "${with_python}" in
 816     yes | auto)
 817       if test ${build} = ${host}; then
 818         AC_PATH_PROG(python_prog_path, python, missing)
 819         if test "${python_prog_path}" = missing; then
 820           python_prog=missing
 821         else
 822           python_prog=${python_prog_path}
 823         fi
 824       else
 825         # Not much we can do except assume the cross-compiler will find the
 826         # right files.
 827         python_prog=missing
 828       fi
 829       ;;
 830     *)
 831       # While we can't run python compiled for $host (unless host == build),
 832       # the user could write a script that provides the needed information,
 833       # so we support that.
 834       python_prog="${with_python}"
 835       AC_PATH_PROG(python_prog_path, ${python_prog}, missing)
 836       if test "${python_prog_path}" = missing; then
 837         AC_ERROR(unable to find python program ${python_prog})
 838       fi
 839       ;;
 840     esac
 841   esac
 842
 843   if test "${python_prog}" != missing; then
 844     # We have a python program to use, but it may be too old.
 845     # Don't flag an error for --with-python=auto (the default).
 846     have_python_config=yes
 847     python_includes=`${python_prog} ${srcdir}/python/python-config.py --includes`
 848     if test $? != 0; then
 849       have_python_config=failed
 850       if test "${with_python}" != auto; then
 851         AC_ERROR(failure running python-config --includes)
 852       fi
 853     fi
 854     python_libs=`${python_prog} ${srcdir}/python/python-config.py --ldflags`
 855     if test $? != 0; then
 856       have_python_config=failed
 857       if test "${with_python}" != auto; then
 858         AC_ERROR(failure running python-config --ldflags)
 859       fi
 860     fi
 861     python_prefix=`${python_prog} ${srcdir}/python/python-config.py --exec-prefix`
 862     if test $? != 0; then
 863       have_python_config=failed
 864       if test "${with_python}" != auto; then
 865         AC_ERROR(failure running python-config --exec-prefix)
 866       fi
 867     fi
 868   else
 869     # We do not have a python executable we can use to determine where
 870     # to find the Python headers and libs.  We cannot guess the include
 871     # path from the python_prefix either, because that include path
 872     # depends on the Python version.  So, there is nothing much we can
 873     # do except assume that the compiler will be able to find those files.
 874     python_includes=
 875     python_libs=
 876     have_python_config=no
 877   fi
 878
 879   # If we have python-config, only try the configuration it provides.
 880   # Otherwise fallback on the old way of trying different versions of
 881   # python in turn.
 882
 883   have_libpython=no
 884   if test "${have_python_config}" = yes; then
 885     # Determine the Python version by extracting "-lpython<version>"
 886     # part of the python_libs. <version> is usually X.Y with X and Y
 887     # being decimal numbers, but can also be XY (seen on Windows).
 888     #
 889     # The extraction is performed using sed with a regular expression.
 890     # Initially, the regexp used was using the '?' quantifier to make
 891     # the dot in the version number optional.  Unfortunately, this
 892     # does not work with non-GNU versions of sed because, because of
 893     # what looks like a limitation (the '?' quantifier does not work
 894     # with back-references).  We work around this limitation by using
 895     # the '*' quantifier instead.  It means that, in theory, we might
 896     # match unexpected version strings such as "-lpython2..7", but
 897     # this seems unlikely in practice.  And even if that happens,
 898     # an error will be triggered later on, when checking that version
 899     # number.
 900     python_version=`echo " ${python_libs} " \
 901                          | sed -e 's,^.* -l\(python[[0-9]]*[[.]]*[[0-9]]*\).*$,\1,'`
 902     case "${python_version}" in
 903     python*)
 904       AC_TRY_LIBPYTHON(${python_version}, have_libpython,
 905                        ${python_includes}, ${python_libs})
 906       ;;
 907     *)
 908       AC_MSG_ERROR([unable to determine python version from ${python_libs}])
 909       ;;
 910     esac
 911   elif test "${have_python_config}" != failed; then
 912     if test "${have_libpython}" = no; then
 913       AC_TRY_LIBPYTHON(python2.7, have_libpython,
 914                        ${python_includes}, "${python_libs} -lpython2.7")
 915     fi
 916     if test "${have_libpython}" = no; then
 917       AC_TRY_LIBPYTHON(python2.6, have_libpython,
 918                        ${python_includes}, "${python_libs} -lpython2.6")
 919     fi
 920     if test ${have_libpython} = no; then
 921       AC_TRY_LIBPYTHON(python2.5, have_libpython,
 922                        ${python_includes}, "${python_libs} -lpython2.5")
 923     fi
 924     if test ${have_libpython} = no; then
 925       AC_TRY_LIBPYTHON(python2.4, have_libpython,
 926                        ${python_includes}, "${python_libs} -lpython2.4")
 927     fi
 928   fi
 929   if test "${have_libpython}" = python2.7 -o "${have_libpython}" = python27; then
 930     AC_DEFINE(HAVE_LIBPYTHON2_7, 1, [Define if Python 2.7 is being used.])
 931   elif test "${have_libpython}" = python2.6 -o "${have_libpython}" = python26; then
 932     AC_DEFINE(HAVE_LIBPYTHON2_6, 1, [Define if Python 2.6 is being used.])
 933   elif test "${have_libpython}" = python2.5 -o "${have_libpython}" = python25; then
 934     AC_DEFINE(HAVE_LIBPYTHON2_5, 1, [Define if Python 2.5 is being used.])
 935   elif test "${have_libpython}" = python2.4 -o "${have_libpython}" = python24; then
 936     AC_DEFINE(HAVE_LIBPYTHON2_4, 1, [Define if Python 2.4 is being used.])
 937   fi
 938
 939   if test "${have_libpython}" = no; then
 940     case "${with_python}" in
 941     yes)
 942       AC_MSG_ERROR([python is missing or unusable])
 943       ;;
 944     auto)
 945       AC_MSG_WARN([python is missing or unusable; some features may be unavailable.])
 946       ;;
 947     *)
 948       AC_MSG_ERROR([no usable python found at ${with_python}])
 949       ;;
 950     esac
 951   else
 952     if test -n "${python_prefix}"; then
 953       AC_DEFINE_UNQUOTED(WITH_PYTHON_PATH, "${python_prefix}",
 954                          [Define if --with-python provides a path, either directly or via python-config.py --exec-prefix.])
 955       GDB_AC_DEFINE_RELOCATABLE(PYTHON_PATH, python, ${python_prefix})
 956     fi
 957   fi
 958 fi
 959
 960 if test "${have_libpython}" != no; then
 961   AC_DEFINE(HAVE_PYTHON, 1, [Define if Python interpreter is being linked in.])
 962   CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_PYTHON_OBS)"
 963   CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_PYTHON_DEPS)"
 964   CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_PYTHON_SRCS)"
 965   CONFIG_INSTALL="$CONFIG_INSTALL install-python"
 966   ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_PYTHON_CFLAGS)"
 967
 968   # Flags needed to compile Python code (taken from python-config --cflags).
 969   # We cannot call python-config directly because it will output whatever was
 970   # used when compiling the Python interpreter itself, including flags which
 971   # would make the python-related objects be compiled differently from the
 972   # rest of GDB (e.g., -O2 and -fPIC).
 973   if test "${GCC}" = yes; then
 974     tentative_python_cflags="-fno-strict-aliasing -DNDEBUG -fwrapv"
 975   fi
 976
 977   if test "x${tentative_python_cflags}" != x; then
 978     AC_MSG_CHECKING(compiler flags for python code)
 979     for flag in ${tentative_python_cflags}; do
 980       # Check that the compiler accepts it
 981       saved_CFLAGS="$CFLAGS"
 982       CFLAGS="$CFLAGS $flag"
 983       AC_TRY_COMPILE([],[],PYTHON_CFLAGS="${PYTHON_CFLAGS} $flag",)
 984       CFLAGS="$saved_CFLAGS"
 985     done
 986     AC_MSG_RESULT(${PYTHON_CFLAGS})
 987   fi
 988
 989   # On x64 Windows, Python's include headers, and pyconfig.h in
 990   # particular, rely on MS_WIN64 macro to detect that it's a 64bit
 991   # version of Windows.  Unfortunately, MS_WIN64 is only defined if
 992   # _MSC_VER, a Microsoft-specific macro, is defined.  So, when
 993   # building on x64 Windows with GCC, we define MS_WIN64 ourselves.
 994   # The issue was reported to the Python community, but still isn't
 995   # solved as of 2012-10-02 (http://bugs.python.org/issue4709).
 996
 997   case "$gdb_host" in
 998     mingw64)
 999            if test "${GCC}" = yes; then
1000              CPPFLAGS="$CPPFLAGS -DMS_WIN64"
1001            fi
1002            ;;
1003   esac
1004
1005   # Note that "python -m threading" cannot be used to check for
1006   # threading support due to a bug in Python 2.7.3
1007   # (http://bugs.python.org/issue15567).
1008   AC_MSG_CHECKING(whether python supports threads)
1009   saved_CPPFLAGS="${CPPFLAGS}"
1010   CPPFLAGS="${PYTHON_CPPFLAGS}"
1011   # Note that the test is reversed so that python_has_threads=yes on
1012   # unexpected failures.
1013   AC_PREPROC_IFELSE(AC_LANG_SOURCE([[
1014 #include <Python.h>
1015 #ifdef WITH_THREAD
1016 # error
1017 #endif
1018   ]]), [python_has_threads=no], [python_has_threads=yes])
1019   AC_MSG_RESULT(${python_has_threads})
1020   CPPFLAGS="${saved_CPPFLAGS}"
1021 else
1022   # Even if Python support is not compiled in, we need to have this file
1023   # included so that the "python" command, et.al., still exists.
1024   CONFIG_OBS="$CONFIG_OBS python.o"
1025   CONFIG_SRCS="$CONFIG_SRCS python/python.c"
1026 fi
1027 AC_SUBST(PYTHON_CFLAGS)
1028 AC_SUBST(PYTHON_CPPFLAGS)
1029 AC_SUBST(PYTHON_LIBS)
1030 AM_CONDITIONAL(HAVE_PYTHON, test "${have_libpython}" != no)
1031
1032 # -------------------- #
1033 # Check for libguile.  #
1034 # -------------------- #
1035
1036 dnl Utility to simplify finding libguile.
1037 dnl $1 = pkg-config-program
1038 dnl $2 = space-separate list of guile versions to try
1039 dnl $3 = yes|no, indicating whether to flag errors or ignore them
1040 dnl $4 = the shell variable to assign the result to
1041 dnl      If libguile is found we store "yes" here.
1042
1043 AC_DEFUN([AC_TRY_LIBGUILE],
1044 [
1045   pkg_config=$1
1046   guile_version_list=$2
1047   flag_errors=$3
1048   define([have_libguile_var],$4)
1049   found_usable_guile=checking
1050   AC_MSG_CHECKING([for usable guile from ${pkg_config}])
1051   for guile_version in ${guile_version_list}; do
1052     ${pkg_config} --exists ${guile_version} 2>/dev/null
1053     if test $? != 0; then
1054       continue
1055     fi
1056     dnl pkg-config says the package exists, so if we get an error now,
1057     dnl that's bad.
1058     new_CPPFLAGS=`${pkg_config} --cflags ${guile_version}`
1059     if test $? != 0; then
1060       AC_MSG_ERROR([failure running pkg-config --cflags ${guile_version}])
1061     fi
1062     new_LIBS=`${pkg_config} --libs ${guile_version}`
1063     if test $? != 0; then
1064       AC_MSG_ERROR([failure running pkg-config --libs ${guile_version}])
1065     fi
1066     dnl If we get this far, great.
1067     found_usable_guile=${guile_version}
1068     break
1069   done
1070   if test "${found_usable_guile}" = "checking"; then
1071     if test "${flag_errors}" = "yes"; then
1072       AC_MSG_ERROR([unable to find usable guile version from "${guile_version_list}"])
1073     else
1074       found_usable_guile=no
1075     fi
1076   fi
1077   dnl One final sanity check.
1078   dnl The user could have said --with-guile=python-2.7.
1079   if test "${found_usable_guile}" != no; then
1080     save_CPPFLAGS=$CPPFLAGS
1081     save_LIBS=$LIBS
1082     CPPFLAGS="$CPPFLAGS $new_CPPFLAGS"
1083     LIBS="$LIBS $new_LIBS"
1084     AC_LINK_IFELSE(AC_LANG_PROGRAM([[#include "libguile.h"]],
1085                                    [[scm_init_guile ();]]),
1086                    [have_libguile_var=yes
1087                     GUILE_CPPFLAGS=$new_CPPFLAGS
1088                     GUILE_LIBS=$new_LIBS],
1089                    [found_usable_guile=no])
1090     dnl scm_set_automatic_finalization_enabled added in Guile 2.2.
1091     AC_CHECK_FUNC(scm_set_automatic_finalization_enabled,
1092       AC_DEFINE(HAVE_GUILE_MANUAL_FINALIZATION, 1,
1093                 [Define if Guile supports manual finalization.])
1094     )
1095     CPPFLAGS=$save_CPPFLAGS
1096     LIBS=$save_LIBS
1097     if test "${found_usable_guile}" = no; then
1098       if test "${flag_errors}" = yes; then
1099         AC_MSG_FAILURE([linking guile version ${guile_version} test program failed])
1100       fi
1101     fi
1102   fi
1103   AC_MSG_RESULT([${found_usable_guile}])
1104 ])
1105
1106 dnl There are several different values for --with-guile:
1107 dnl
1108 dnl no -   Don't include guile support.
1109 dnl yes -  Include guile support, error if it's missing.
1110 dnl        The pkg-config program must be in $PATH.
1111 dnl auto - Same as "yes", but if guile is missing from the system,
1112 dnl        fall back to "no".
1113 dnl guile-version [guile-version-choice-2 ...] -
1114 dnl        A space-separated list of guile package versions to try.
1115 dnl        These are passed to pkg-config as-is.
1116 dnl        E.g., guile-2.0 or guile-2.2-uninstalled
1117 dnl        This requires making sure PKG_CONFIG_PATH is set appropriately.
1118 dnl /path/to/pkg-config -
1119 dnl        Use this pkg-config program.
1120 dnl        NOTE: This needn't be the "real" pkg-config program.
1121 dnl        It could be a shell script.  It is invoked as:
1122 dnl        pkg-config --exists $version
1123 dnl        pkg-config --cflags $version
1124 dnl        pkg-config --libs $version
1125 dnl        pkg-config --variable guild $version
1126 dnl        The script will be called with $version having each value in
1127 dnl        $try_guile_versions until --exists indicates success.
1128
1129 AC_ARG_WITH(guile,
1130   AS_HELP_STRING([--with-guile@<:@=GUILE@:>@], [include guile support (auto/yes/no/<guile-version>/<pkg-config-program>)]),
1131   [], [with_guile=auto])
1132 AC_MSG_CHECKING([whether to use guile])
1133 AC_MSG_RESULT([$with_guile])
1134
1135 dnl We check guile with pkg-config.
1136 AC_PATH_PROG(pkg_config_prog_path, pkg-config, missing)
1137
1138 try_guile_versions="guile-2.2 guile-2.0"
1139 have_libguile=no
1140 case "${with_guile}" in
1141 no)
1142   AC_MSG_WARN([guile support disabled; some features will be unavailable.])
1143   ;;
1144 auto)
1145   if test "${pkg_config_prog_path}" = "missing"; then
1146     AC_MSG_WARN([pkg-config not found, guile support disabled])
1147   else
1148     AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${try_guile_versions}, no, have_libguile)
1149   fi
1150   ;;
1151 yes)
1152   if test "${pkg_config_prog_path}" = "missing"; then
1153     AC_MSG_ERROR([pkg-config not found])
1154   fi
1155   AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${try_guile_versions}, yes, have_libguile)
1156   ;;
1157 [[\\/]]* | ?:[[\\/]]*)
1158   if test -x "${with_guile}"; then
1159     AC_TRY_LIBGUILE(${with_guile}, ${try_guile_versions}, yes, have_libguile)
1160   else
1161     AC_MSG_ERROR([Guile config program not executable: ${with_guile}])
1162   fi
1163   ;;
1164 "" | */*)
1165   # Disallow --with=guile="" and --with-guile=foo/bar.
1166   AC_MSG_ERROR([invalid value for --with-guile])
1167   ;;
1168 *)
1169   # A space separate list of guile versions to try, in order.
1170   if test "${pkg_config_prog_path}" = "missing"; then
1171     AC_MSG_ERROR([pkg-config not found])
1172   fi
1173   AC_TRY_LIBGUILE(${pkg_config_prog_path}, ${with_guile}, yes, have_libguile)
1174   ;;
1175 esac
1176
1177 if test "${have_libguile}" != no; then
1178   dnl Get the name of the 'guild' program.
1179   case "${with_guile}" in
1180   [[\\/]]* | ?:[[\\/]]*)
1181     GDB_GUILE_PROGRAM_NAMES(["${with_guile}"], ["${guile_version}"])
1182     ;;
1183   *)
1184     GDB_GUILE_PROGRAM_NAMES(["${pkg_config_prog_path}"], ["${guile_version}"])
1185     ;;
1186   esac
1187
1188   dnl Make sure guild can handle this host.
1189   GDB_TRY_GUILD([$srcdir/guile/lib/gdb/support.scm])
1190   dnl If not, disable guile support.
1191   if test "$ac_cv_guild_ok" = no; then
1192     have_libguile=no
1193     AC_MSG_WARN(disabling guile support, $GUILD fails compiling for $host)
1194   fi
1195 fi
1196
1197 if test "${have_libguile}" != no; then
1198   AC_DEFINE(HAVE_GUILE, 1, [Define if Guile interpreter is being linked in.])
1199   CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_GUILE_OBS)"
1200   CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_GUILE_DEPS)"
1201   CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_GUILE_SRCS)"
1202   CONFIG_INSTALL="$CONFIG_INSTALL install-guile"
1203   ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_GUILE_CFLAGS)"
1204
1205   dnl The 'scm_new_smob' function appeared in Guile 2.0.6.
1206   save_LIBS="$LIBS"
1207   save_CPPFLAGS="$CPPFLAGS"
1208   LIBS="$GUILE_LIBS"
1209   CPPFLAGS="$GUILE_CPPFLAGS"
1210   AC_CHECK_FUNCS([scm_new_smob])
1211   LIBS="$save_LIBS"
1212   CPPFLAGS="$save_CPPFLAGS"
1213 else
1214   # Even if Guile support is not compiled in, we need to have these files
1215   # included.
1216   CONFIG_OBS="$CONFIG_OBS guile.o"
1217   CONFIG_SRCS="$CONFIG_SRCS guile/guile.c"
1218 fi
1219 AC_SUBST(GUILE_CPPFLAGS)
1220 AC_SUBST(GUILE_LIBS)
1221 AM_CONDITIONAL(HAVE_GUILE, test "${have_libguile}" != no)
1222
1223 # --------------------- #
1224 # Check for libmcheck.  #
1225 # --------------------- #
1226
1227 # Enable -lmcheck by default (it provides cheap-enough memory mangling),
1228 # but turn it off if Python is enabled with threads, since -lmcheck is
1229 # not thread safe (http://sourceware.org/bugzilla/show_bug.cgi?id=9939),
1230 # and for releases.
1231 if test \( "${have_libpython}" = "no" -o "${python_has_threads}" = "no" \) \
1232    && $development; then
1233   libmcheck_default=yes
1234 else
1235   libmcheck_default=no
1236 fi
1237 GDB_AC_LIBMCHECK(${libmcheck_default})
1238
1239 if test "$ENABLE_LIBMCHECK" = "yes" \
1240         -a "${have_libpython}" != "no" \
1241         -a "${python_has_threads}" = "yes" ; then
1242   AC_MSG_WARN(--enable-libmcheck may lead to spurious crashes if threads are used in python)
1243 fi
1244
1245 AC_ARG_WITH(intel_pt,
1246   AS_HELP_STRING([--with-intel-pt], [include Intel(R) Processor Trace support (auto/yes/no)]),
1247   [], [with_intel_pt=auto])
1248 AC_MSG_CHECKING([whether to use intel pt])
1249 AC_MSG_RESULT([$with_intel_pt])
1250
1251 if test "${with_intel_pt}" = no; then
1252   AC_MSG_WARN([Intel(R) Processor Trace support disabled; some features may be unavailable.])
1253   HAVE_LIBIPT=no
1254 else
1255   AC_LIB_HAVE_LINKFLAGS([ipt], [], [#include "intel-pt.h"], [pt_insn_alloc_decoder (0);])
1256   if test "$HAVE_LIBIPT" != yes; then
1257     if test "$with_intel_pt" = yes; then
1258       AC_MSG_ERROR([libipt is missing or unusable])
1259     else
1260       AC_MSG_WARN([libipt is missing or unusable; some features may be unavailable.])
1261     fi
1262   fi
1263 fi
1264
1265 # ------------------------- #
1266 # Checks for header files.  #
1267 # ------------------------- #
1268
1269 AC_HEADER_STDC
1270 # elf_hp.h is for HP/UX 64-bit shared library support.
1271 AC_CHECK_HEADERS([nlist.h machine/reg.h poll.h sys/poll.h proc_service.h \
1272                   thread_db.h \
1273                   sys/fault.h \
1274                   sys/file.h sys/filio.h sys/ioctl.h sys/param.h \
1275                   sys/resource.h sys/procfs.h sys/ptrace.h ptrace.h \
1276                   sys/reg.h sys/debugreg.h sys/select.h sys/syscall.h \
1277                   termios.h termio.h \
1278                   sgtty.h elf_hp.h \
1279                   dlfcn.h])
1280 AC_CHECK_HEADERS(sys/proc.h, [], [],
1281 [#if HAVE_SYS_PARAM_H
1282 # include <sys/param.h>
1283 #endif
1284 ])
1285 AC_CHECK_HEADERS(sys/user.h, [], [],
1286 [#if HAVE_SYS_PARAM_H
1287 # include <sys/param.h>
1288 #endif
1289 ])
1290
1291 # On Solaris 2.[789], we need to define _MSE_INT_H to avoid a clash
1292 # between <widec.h> and <wchar.h> that would cause AC_CHECK_HEADERS to
1293 # think that we don't have <curses.h> if we're using GCC.
1294 case $host_os in
1295   solaris2.[[789]])
1296     if test "$GCC" = yes; then
1297       AC_DEFINE(_MSE_INT_H, 1,
1298         [Define to 1 to avoid a clash between <widec.h> and <wchar.h> on
1299    Solaris 2.[789] when using GCC. ])
1300     fi ;;
1301 esac
1302 AC_CHECK_HEADERS(curses.h cursesX.h ncurses.h ncurses/ncurses.h ncurses/term.h)
1303 AC_CHECK_HEADERS(term.h, [], [],
1304 [#if HAVE_CURSES_H
1305 # include <curses.h>
1306 #endif
1307 ])
1308
1309 # ------------------------- #
1310 # Checks for declarations.  #
1311 # ------------------------- #
1312
1313 libiberty_INIT
1314
1315 AC_CHECK_DECLS([free, malloc, realloc, snprintf])
1316 AM_LC_MESSAGES
1317
1318 # ----------------------- #
1319 # Checks for structures.  #
1320 # ----------------------- #
1321
1322 AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize])
1323
1324 # ------------------ #
1325 # Checks for types.  #
1326 # ------------------ #
1327
1328 AC_TYPE_SIGNAL
1329 AC_CHECK_TYPES(socklen_t, [], [],
1330 [#include <sys/types.h>
1331 #include <sys/socket.h>
1332 ])
1333
1334 # ------------------------------------- #
1335 # Checks for compiler characteristics.  #
1336 # ------------------------------------- #
1337
1338 AC_C_CONST
1339 AC_C_INLINE
1340 AC_C_BIGENDIAN
1341
1342 # ------------------------------ #
1343 # Checks for library functions.  #
1344 # ------------------------------ #
1345
1346 AC_FUNC_MMAP
1347 AC_FUNC_VFORK
1348 AC_CHECK_FUNCS([getauxval getrusage getuid getgid \
1349                 pipe poll pread pread64 pwrite resize_term \
1350                 sbrk setpgid setpgrp setsid \
1351                 sigaction sigprocmask sigsetmask socketpair \
1352                 ttrace wborder wresize setlocale iconvlist libiconvlist btowc \
1353                 setrlimit getrlimit posix_madvise waitpid \
1354                 ptrace64 sigaltstack mkdtemp setns])
1355 AM_LANGINFO_CODESET
1356 GDB_AC_COMMON
1357
1358 # Check the return and argument types of ptrace.
1359 GDB_AC_PTRACE
1360
1361 dnl AC_FUNC_SETPGRP does not work when cross compiling
1362 dnl Instead, assume we will have a prototype for setpgrp if cross compiling.
1363 if test "$cross_compiling" = no; then
1364   AC_FUNC_SETPGRP
1365 else
1366   AC_CACHE_CHECK([whether setpgrp takes no argument], ac_cv_func_setpgrp_void,
1367     [AC_TRY_COMPILE([
1368 #include <unistd.h>
1369 ], [
1370   if (setpgrp(1,1) == -1)
1371     exit (0);
1372   else
1373     exit (1);
1374 ], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes)])
1375 if test $ac_cv_func_setpgrp_void = yes; then
1376   AC_DEFINE(SETPGRP_VOID, 1)
1377 fi
1378 fi
1379
1380 # Assume we'll default to using the included libiberty regex.
1381 gdb_use_included_regex=yes
1382
1383 # However, if the system regex is GNU regex, then default to *not*
1384 # using the included regex.
1385 AC_CACHE_CHECK(
1386   [for GNU regex],
1387   [gdb_cv_have_gnu_regex],
1388   [AC_TRY_COMPILE(
1389     [#include <gnu-versions.h>],
1390     [#define REGEX_INTERFACE_VERSION 1
1391 #if _GNU_REGEX_INTERFACE_VERSION != REGEX_INTERFACE_VERSION
1392 # error "Version mismatch"
1393 #endif],
1394     gdb_cv_have_gnu_regex=yes,
1395     gdb_cv_have_gnu_regex=no)])
1396 if test $gdb_cv_have_gnu_regex = yes; then
1397   gdb_use_included_regex=no
1398 fi
1399
1400 AC_ARG_WITH(included-regex,
1401   AS_HELP_STRING([--without-included-regex], [don't use included regex; this is the default on systems with version 2 of the GNU C library (use with caution on other system)]),
1402   gdb_with_regex=$withval,
1403   gdb_with_regex=$gdb_use_included_regex)
1404 if test "$gdb_with_regex" = yes; then
1405   AC_DEFINE(USE_INCLUDED_REGEX, 1,
1406     [Define to 1 if the regex included in libiberty should be used.])
1407 fi
1408
1409 # Check if <sys/proc.h> defines `struct thread' with a td_pcb member.
1410 AC_CHECK_MEMBERS([struct thread.td_pcb], [], [],
1411 [#include <sys/param.h>
1412 #include <sys/proc.h>
1413 ])
1414
1415 # See if <sys/lwp.h> defines `struct lwp`.
1416 AC_CACHE_CHECK([for struct lwp], gdb_cv_struct_lwp,
1417 [AC_TRY_COMPILE([#include <sys/param.h>
1418 #include <sys/lwp.h>], [struct lwp l;],
1419 gdb_cv_struct_lwp=yes, gdb_cv_struct_lwp=no)])
1420 if test $gdb_cv_struct_lwp = yes; then
1421   AC_DEFINE(HAVE_STRUCT_LWP, 1,
1422             [Define to 1 if your system has struct lwp.])
1423 fi
1424
1425 # See if <machine/reg.h> degines `struct reg'.
1426 AC_CACHE_CHECK([for struct reg in machine/reg.h], gdb_cv_struct_reg,
1427 [AC_TRY_COMPILE([#include <sys/types.h>
1428 #include <machine/reg.h>], [struct reg r;],
1429 gdb_cv_struct_reg=yes, gdb_cv_struct_reg=no)])
1430 if test $gdb_cv_struct_reg = yes; then
1431   AC_DEFINE(HAVE_STRUCT_REG, 1,
1432             [Define to 1 if your system has struct reg in <machine/reg.h>.])
1433 fi
1434
1435 # See if <machine/reg.h> supports the %fs and %gs i386 segment registers.
1436 # Older i386 BSD's don't have the r_fs and r_gs members of `struct reg'.
1437 AC_CHECK_MEMBERS([struct reg.r_fs, struct reg.r_gs], [], [],
1438                  [#include <machine/reg.h>])
1439
1440 # See if <sys/user.h> supports the %fs_base and %gs_bas amd64 segment registers.
1441 # Older amd64 Linux's don't have the fs_base and gs_base members of
1442 # `struct user_regs_struct'.
1443 AC_CHECK_MEMBERS([struct user_regs_struct.fs_base, struct user_regs_struct.gs_base],
1444                  [], [], [#include <sys/user.h>])
1445
1446 # See if <sys/ptrace.h> provides the PTRACE_GETREGS request.
1447 AC_MSG_CHECKING(for PTRACE_GETREGS)
1448 AC_CACHE_VAL(gdb_cv_have_ptrace_getregs,
1449 [AC_TRY_COMPILE([#include <sys/ptrace.h>],
1450                 [PTRACE_GETREGS;],
1451                 [gdb_cv_have_ptrace_getregs=yes],
1452                 [gdb_cv_have_ptrace_getregs=no])])
1453 AC_MSG_RESULT($gdb_cv_have_ptrace_getregs)
1454 if test $gdb_cv_have_ptrace_getregs = yes; then
1455   AC_DEFINE(HAVE_PTRACE_GETREGS, 1,
1456   [Define if sys/ptrace.h defines the PTRACE_GETREGS request.])
1457 fi
1458
1459 # See if <sys/ptrace.h> provides the PTRACE_GETFPXREGS request.
1460 AC_MSG_CHECKING(for PTRACE_GETFPXREGS)
1461 AC_CACHE_VAL(gdb_cv_have_ptrace_getfpxregs,
1462 [AC_TRY_COMPILE([#include <sys/ptrace.h>],
1463                 [PTRACE_GETFPXREGS;],
1464                 [gdb_cv_have_ptrace_getfpxregs=yes],
1465                 [gdb_cv_have_ptrace_getfpxregs=no])])
1466 AC_MSG_RESULT($gdb_cv_have_ptrace_getfpxregs)
1467 if test $gdb_cv_have_ptrace_getfpxregs = yes; then
1468   AC_DEFINE(HAVE_PTRACE_GETFPXREGS, 1,
1469   [Define if sys/ptrace.h defines the PTRACE_GETFPXREGS request.])
1470 fi
1471
1472 # See if <sys/ptrace.h> provides the PT_GETDBREGS request.
1473 AC_MSG_CHECKING(for PT_GETDBREGS)
1474 AC_CACHE_VAL(gdb_cv_have_pt_getdbregs,
1475 [AC_TRY_COMPILE([#include <sys/types.h>
1476 #include <sys/ptrace.h>],
1477                 [PT_GETDBREGS;],
1478                 [gdb_cv_have_pt_getdbregs=yes],
1479                 [gdb_cv_have_pt_getdbregs=no])])
1480 AC_MSG_RESULT($gdb_cv_have_pt_getdbregs)
1481 if test $gdb_cv_have_pt_getdbregs = yes; then
1482   AC_DEFINE(HAVE_PT_GETDBREGS, 1,
1483   [Define if sys/ptrace.h defines the PT_GETDBREGS request.])
1484 fi
1485
1486 # See if <sys/ptrace.h> provides the PT_GETXMMREGS request.
1487 AC_MSG_CHECKING(for PT_GETXMMREGS)
1488 AC_CACHE_VAL(gdb_cv_have_pt_getxmmregs,
1489 [AC_TRY_COMPILE([#include <sys/types.h>
1490 #include <sys/ptrace.h>],
1491                 [PT_GETXMMREGS;],
1492                 [gdb_cv_have_pt_getxmmregs=yes],
1493                 [gdb_cv_have_pt_getxmmregs=no])])
1494 AC_MSG_RESULT($gdb_cv_have_pt_getxmmregs)
1495 if test $gdb_cv_have_pt_getxmmregs = yes; then
1496   AC_DEFINE(HAVE_PT_GETXMMREGS, 1,
1497   [Define if sys/ptrace.h defines the PT_GETXMMREGS request.])
1498 fi
1499
1500 # Detect which type of /proc is in use, such as for Solaris.
1501
1502 if test "${target}" = "${host}"; then
1503   case "${host}" in
1504   *-*-sysv4.2* | *-*-sysv5* )
1505       AC_DEFINE(NEW_PROC_API, 1,
1506       [Define if you want to use new multi-fd /proc interface.])
1507       ;;
1508   *-*-solaris2.[[6789]] | *-*-solaris2.1[[0-9]]*)
1509       AC_DEFINE(NEW_PROC_API, 1,
1510       [Define if you want to use new multi-fd /proc interface.])
1511       ;;
1512   mips-sgi-irix5*)
1513       # Work around <sys/proc.h> needing _KMEMUSER problem on IRIX 5.
1514       AC_DEFINE([_KMEMUSER], 1,
1515       [Define to 1 so <sys/proc.h> gets a definition of anon_hdl.  Works
1516        around a <sys/proc.h> problem on IRIX 5.])
1517       ;;
1518   esac
1519 fi
1520
1521 if test "$ac_cv_header_sys_procfs_h" = yes; then
1522   BFD_HAVE_SYS_PROCFS_TYPE(gregset_t)
1523   BFD_HAVE_SYS_PROCFS_TYPE(fpregset_t)
1524   BFD_HAVE_SYS_PROCFS_TYPE(prgregset_t)
1525   BFD_HAVE_SYS_PROCFS_TYPE(prfpregset_t)
1526   BFD_HAVE_SYS_PROCFS_TYPE(prgregset32_t)
1527   BFD_HAVE_SYS_PROCFS_TYPE(lwpid_t)
1528   BFD_HAVE_SYS_PROCFS_TYPE(psaddr_t)
1529   BFD_HAVE_SYS_PROCFS_TYPE(prsysent_t)
1530   BFD_HAVE_SYS_PROCFS_TYPE(pr_sigset_t)
1531   BFD_HAVE_SYS_PROCFS_TYPE(pr_sigaction64_t)
1532   BFD_HAVE_SYS_PROCFS_TYPE(pr_siginfo64_t)
1533
1534
1535   dnl Check for broken prfpregset_t type
1536
1537   dnl For Linux/i386, glibc 2.1.3 was released with a bogus
1538   dnl prfpregset_t type (it's a typedef for the pointer to a struct
1539   dnl instead of the struct itself).  We detect this here, and work
1540   dnl around it in gdb_proc_service.h.
1541
1542   if test $bfd_cv_have_sys_procfs_type_prfpregset_t = yes; then
1543     AC_MSG_CHECKING(whether prfpregset_t type is broken)
1544     AC_CACHE_VAL(gdb_cv_prfpregset_t_broken,
1545       [AC_TRY_RUN([#include <sys/procfs.h>
1546        int main ()
1547        {
1548          if (sizeof (prfpregset_t) == sizeof (void *))
1549            return 1;
1550          return 0;
1551        }],
1552        gdb_cv_prfpregset_t_broken=no,
1553        gdb_cv_prfpregset_t_broken=yes,
1554        gdb_cv_prfpregset_t_broken=yes)])
1555     AC_MSG_RESULT($gdb_cv_prfpregset_t_broken)
1556     if test $gdb_cv_prfpregset_t_broken = yes; then
1557       AC_DEFINE(PRFPREGSET_T_BROKEN, 1,
1558       [Define if the prfpregset_t type is broken.])
1559     fi
1560   fi
1561 fi
1562
1563 # Check if the compiler supports the `long long' type.
1564
1565 AC_CACHE_CHECK([for long long support in compiler], gdb_cv_c_long_long,
1566                [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1567 [[extern long long foo;]],
1568 [[switch (foo & 2) { case 0: return 1; }]])],
1569                                   gdb_cv_c_long_long=yes,
1570                                   gdb_cv_c_long_long=no)])
1571 if test $gdb_cv_c_long_long != yes; then
1572   # libdecnumber requires long long.
1573   AC_MSG_ERROR([Compiler must support long long for GDB.])
1574 fi
1575
1576 # Check if the compiler and runtime support printing long longs.
1577
1578 AC_CACHE_CHECK([for long long support in printf],
1579                gdb_cv_printf_has_long_long,
1580                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1581 [[char buf[32];
1582   long long l = 0;
1583   l = (l << 16) + 0x0123;
1584   l = (l << 16) + 0x4567;
1585   l = (l << 16) + 0x89ab;
1586   l = (l << 16) + 0xcdef;
1587   sprintf (buf, "0x%016llx", l);
1588   return (strcmp ("0x0123456789abcdef", buf));]])],
1589                               gdb_cv_printf_has_long_long=yes,
1590                               gdb_cv_printf_has_long_long=no,
1591                               gdb_cv_printf_has_long_long=no)])
1592 if test $gdb_cv_printf_has_long_long = yes; then
1593   AC_DEFINE(PRINTF_HAS_LONG_LONG, 1,
1594             [Define to 1 if the "%ll" format works to print long longs.])
1595 fi
1596
1597 # Check if the compiler and runtime support printing decfloats.
1598
1599 AC_CACHE_CHECK([for decfloat support in printf],
1600                gdb_cv_printf_has_decfloat,
1601                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1602 [[char buf[64];
1603   _Decimal32 d32 = 1.2345df;
1604   _Decimal64 d64 = 1.2345dd;
1605   _Decimal128 d128 = 1.2345dl;
1606   sprintf (buf, "Decimal32: %H\nDecimal64: %D\nDecimal128: %DD", d32, d64, d128);
1607   return (strcmp ("Decimal32: 1.2345\nDecimal64: 1.2345\nDecimal128: 1.2345", buf));]])],
1608                               gdb_cv_printf_has_decfloat=yes,
1609                               gdb_cv_printf_has_decfloat=no,
1610                               gdb_cv_printf_has_decfloat=no)])
1611 if test $gdb_cv_printf_has_decfloat = yes; then
1612   AC_DEFINE(PRINTF_HAS_DECFLOAT, 1,
1613             [Define to 1 if the "%H, %D and %DD" formats work to print decfloats.])
1614 fi
1615
1616 # Check if the compiler supports the `long double' type.  We can't use
1617 # AC_C_LONG_DOUBLE because that one does additional checks on the
1618 # constants defined in <float.h> that fail on some systems,
1619 # e.g. FreeBSD/i386 4.7 and OpenBSD/i386 3.6.
1620
1621 AC_CACHE_CHECK([for long double support in compiler], gdb_cv_c_long_double,
1622                [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[long double foo;]])],
1623                                   gdb_cv_c_long_double=yes,
1624                                   gdb_cv_c_long_double=no)])
1625 if test $gdb_cv_c_long_double = yes; then
1626   AC_DEFINE(HAVE_LONG_DOUBLE, 1,
1627            [Define to 1 if the compiler supports long double.])
1628 fi
1629
1630 # Check if the compiler and runtime support printing long doubles.
1631
1632 AC_CACHE_CHECK([for long double support in printf],
1633                gdb_cv_printf_has_long_double,
1634                [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1635 [[char buf[16];
1636   long double f = 3.141592653;
1637   sprintf (buf, "%Lg", f);
1638   return (strncmp ("3.14159", buf, 7));]])],
1639                               gdb_cv_printf_has_long_double=yes,
1640                               gdb_cv_printf_has_long_double=no,
1641                               gdb_cv_printf_has_long_double=no)])
1642 if test $gdb_cv_printf_has_long_double = yes; then
1643   AC_DEFINE(PRINTF_HAS_LONG_DOUBLE, 1,
1644             [Define to 1 if the "%Lg" format works to print long doubles.])
1645 fi
1646
1647 # Check if the compiler and runtime support scanning long doubles.
1648
1649 AC_CACHE_CHECK([for long double support in scanf],
1650                gdb_cv_scanf_has_long_double,
1651                [AC_RUN_IFELSE([AC_LANG_PROGRAM(
1652 [[#include <stdio.h>]],
1653 [[char *buf = "3.141592653";
1654   long double f = 0;
1655   sscanf (buf, "%Lg", &f);
1656   return !(f > 3.14159 && f < 3.14160);]])],
1657                               gdb_cv_scanf_has_long_double=yes,
1658                               gdb_cv_scanf_has_long_double=no,
1659                               gdb_cv_scanf_has_long_double=no)])
1660 if test $gdb_cv_scanf_has_long_double = yes; then
1661   AC_DEFINE(SCANF_HAS_LONG_DOUBLE, 1,
1662             [Define to 1 if the "%Lg" format works to scan long doubles.])
1663 fi
1664
1665 case ${host_os} in
1666 aix*)
1667   AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
1668     SAVE_LDFLAGS=$LDFLAGS
1669
1670     case $GCC in
1671     yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
1672     *) gdb_cv_bigtoc=-bbigtoc ;;
1673     esac
1674
1675     LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
1676     AC_TRY_LINK([], [int i;], [], [gdb_cv_bigtoc=])
1677     LDFLAGS="${SAVE_LDFLAGS}"
1678   ])
1679   CONFIG_LDFLAGS="${CONFIG_LDFLAGS} ${gdb_cv_bigtoc}"
1680   ;;
1681 esac
1682
1683 AC_MSG_CHECKING(for the dynamic export flag)
1684 dynamic_list=false
1685 if test "${gdb_native}" = yes; then
1686    # The dynamically loaded libthread_db needs access to symbols in the gdb
1687    # executable.  Older GNU ld supports --export-dynamic but --dynamic-list
1688    # may not be supported there.
1689    old_LDFLAGS="$LDFLAGS"
1690    # Older GNU ld supports --export-dynamic but --dynamic-list it does not.
1691    RDYNAMIC="-Wl,--dynamic-list=${srcdir}/proc-service.list"
1692    LDFLAGS="$LDFLAGS $RDYNAMIC"
1693    if test "${have_libpython}" = no; then
1694      AC_TRY_LINK([], [], [dynamic_list=true])
1695    else
1696      # Workaround http://bugs.python.org/issue4434 where static
1697      # libpythonX.Y.a would get its symbols required for
1698      # pythonX.Y/lib-dynload/*.so modules hidden by -Wl,--dynamic-list.
1699      # Problem does not happen for the recommended libpythonX.Y.so linkage.
1700      old_CFLAGS="$CFLAGS"
1701      CFLAGS="$CFLAGS $PYTHON_CFLAGS"
1702      old_LIBS="$LIBS"
1703      LIBS="$LIBS $PYTHON_LIBS"
1704      AC_RUN_IFELSE(
1705        AC_LANG_PROGRAM(
1706          [#include "]${have_libpython}[/Python.h"],
1707          [int err;
1708           Py_Initialize ();
1709           err = PyRun_SimpleString ("import itertools\n");
1710           Py_Finalize ();
1711           return err == 0 ? 0 : 1;]),
1712        [dynamic_list=true], [], [true])
1713      LIBS="$old_LIBS"
1714      CFLAGS="$old_CFLAGS"
1715    fi
1716    LDFLAGS="$old_LDFLAGS"
1717 fi
1718 if $dynamic_list; then
1719   found="-Wl,--dynamic-list"
1720   RDYNAMIC='-Wl,--dynamic-list=$(srcdir)/proc-service.list'
1721 else
1722   found="-rdynamic"
1723   RDYNAMIC="-rdynamic"
1724 fi
1725 AC_SUBST(RDYNAMIC)
1726 AC_MSG_RESULT($found)
1727
1728 dnl For certain native configurations, we need to check whether thread
1729 dnl support can be built in or not.
1730 dnl
1731 dnl Note that we only want this if we are both native (host == target),
1732 dnl and not doing a canadian cross build (build == host).
1733
1734 if test ${build} = ${host} -a ${host} = ${target} ; then
1735    case ${host_os} in
1736    solaris*)
1737       # See if thread_db library is around for Solaris thread debugging.
1738       # Note that we must explicitly test for version 1 of the library
1739       # because version 0 (present on Solaris 2.4 or earlier) doesn't have
1740       # the same API.
1741       AC_MSG_CHECKING(for Solaris thread debugging library)
1742       if test -f /usr/lib/libthread_db.so.1 ; then
1743          AC_MSG_RESULT(yes)
1744          AC_DEFINE(HAVE_THREAD_DB_LIB, 1,
1745          [Define if using Solaris thread debugging.])
1746          CONFIG_OBS="${CONFIG_OBS} sol-thread.o"
1747          CONFIG_SRCS="${CONFIG_SRCS} sol-thread.c"
1748          AC_CHECK_LIB(dl, dlopen)
1749          CONFIG_LDFLAGS="${CONFIG_LDFLAGS} $RDYNAMIC"
1750          # Sun randomly tweaked the prototypes in <proc_service.h>
1751          # at one point.
1752          AC_MSG_CHECKING(if <proc_service.h> is old)
1753          AC_CACHE_VAL(gdb_cv_proc_service_is_old,[
1754             AC_TRY_COMPILE([
1755                 #include <proc_service.h>
1756                 ps_err_e ps_pdwrite
1757                     (struct ps_prochandle*, psaddr_t, const void*, size_t);
1758             ],, gdb_cv_proc_service_is_old=no,
1759                 gdb_cv_proc_service_is_old=yes)
1760          ])
1761          AC_MSG_RESULT($gdb_cv_proc_service_is_old)
1762          if test $gdb_cv_proc_service_is_old = yes; then
1763             AC_DEFINE(PROC_SERVICE_IS_OLD, 1,
1764             [Define if <proc_service.h> on solaris uses int instead of
1765              size_t, and assorted other type changes.])
1766          fi
1767       else
1768          AC_MSG_RESULT(no)
1769       fi
1770       ;;
1771    aix*)
1772       AC_MSG_CHECKING(for AiX thread debugging library)
1773       AC_CACHE_VAL(gdb_cv_have_aix_thread_debug,
1774                    [AC_TRY_COMPILE([#include <sys/pthdebug.h>],
1775                                    [#ifndef PTHDB_VERSION_3
1776                                     #error
1777                                     #endif],
1778                                    gdb_cv_have_aix_thread_debug=yes,
1779                                    gdb_cv_have_aix_thread_debug=no)])
1780       AC_MSG_RESULT($gdb_cv_have_aix_thread_debug)
1781       if test $gdb_cv_have_aix_thread_debug = yes; then
1782          CONFIG_SRCS="${CONFIG_SRCS} aix-thread.c"
1783          CONFIG_OBS="${CONFIG_OBS} aix-thread.o"
1784          LIBS="$LIBS -lpthdebug"
1785
1786          # Older versions of AIX do not provide the declaration for
1787          # the getthrds function (it appears that it was introduced
1788          # with AIX 6.x).
1789          AC_CHECK_DECLS(getthrds, [], [], [[#include <procinfo.h>]])
1790       fi
1791       ;;
1792    esac
1793    AC_SUBST(CONFIG_LDFLAGS)
1794 fi
1795
1796 dnl See if we have a thread_db header file that has TD_NOTALLOC and
1797 dnl other error codes.
1798 if test "x$ac_cv_header_thread_db_h" = "xyes"; then
1799    AC_CACHE_CHECK([whether <thread_db.h> has TD_NOTALLOC],
1800                   gdb_cv_thread_db_h_has_td_notalloc,
1801      AC_TRY_COMPILE(
1802        [#include <thread_db.h>],
1803        [int i = TD_NOTALLOC;],
1804        gdb_cv_thread_db_h_has_td_notalloc=yes,
1805        gdb_cv_thread_db_h_has_td_notalloc=no
1806      )
1807    )
1808    AC_CACHE_CHECK([whether <thread_db.h> has TD_VERSION],
1809                   gdb_cv_thread_db_h_has_td_version,
1810      AC_TRY_COMPILE(
1811        [#include <thread_db.h>],
1812        [int i = TD_VERSION;],
1813        gdb_cv_thread_db_h_has_td_version=yes,
1814        gdb_cv_thread_db_h_has_td_version=no
1815      )
1816    )
1817    AC_CACHE_CHECK([whether <thread_db.h> has TD_NOTLS],
1818                   gdb_cv_thread_db_h_has_td_notls,
1819      AC_TRY_COMPILE(
1820        [#include <thread_db.h>],
1821        [int i = TD_NOTLS;],
1822        gdb_cv_thread_db_h_has_td_notls=yes,
1823        gdb_cv_thread_db_h_has_td_notls=no
1824      )
1825    )
1826 fi
1827 if test "x$gdb_cv_thread_db_h_has_td_notalloc" = "xyes"; then
1828   AC_DEFINE(THREAD_DB_HAS_TD_NOTALLOC, 1,
1829             [Define if <thread_db.h> has the TD_NOTALLOC error code.])
1830 fi
1831 if test "x$gdb_cv_thread_db_h_has_td_version" = "xyes"; then
1832   AC_DEFINE(THREAD_DB_HAS_TD_VERSION, 1,
1833             [Define if <thread_db.h> has the TD_VERSION error code.])
1834 fi
1835 if test "x$gdb_cv_thread_db_h_has_td_notls" = "xyes"; then
1836   AC_DEFINE(THREAD_DB_HAS_TD_NOTLS, 1,
1837             [Define if <thread_db.h> has the TD_NOTLS error code.])
1838 fi
1839
1840 dnl See if we have a sys/syscall header file that has __NR_tkill.
1841 if test "x$ac_cv_header_sys_syscall_h" = "xyes"; then
1842    AC_CACHE_CHECK([whether <sys/syscall.h> has __NR_tkill],
1843                   gdb_cv_sys_syscall_h_has_tkill,
1844      AC_TRY_COMPILE(
1845        [#include <sys/syscall.h>],
1846        [int i = __NR_tkill;],
1847        gdb_cv_sys_syscall_h_has_tkill=yes,
1848        gdb_cv_sys_syscall_h_has_tkill=no
1849      )
1850    )
1851 fi
1852 dnl See if we can issue tkill syscall.
1853 if test "x$gdb_cv_sys_syscall_h_has_tkill" = "xyes"; then
1854   AC_CHECK_FUNC(syscall,
1855     AC_DEFINE(HAVE_TKILL_SYSCALL, 1, [Define if you support the tkill syscall.])
1856   )
1857 fi
1858
1859 dnl Check if we can disable the virtual address space randomization.
1860 dnl The functionality of setarch -R.
1861 AC_CHECK_DECLS([ADDR_NO_RANDOMIZE],,, [#include <sys/personality.h>])
1862 define([PERSONALITY_TEST], [AC_LANG_PROGRAM([#include <sys/personality.h>], [
1863 #      if !HAVE_DECL_ADDR_NO_RANDOMIZE
1864 #       define ADDR_NO_RANDOMIZE 0x0040000
1865 #      endif
1866        /* Test the flag could be set and stays set.  */
1867        personality (personality (0xffffffff) | ADDR_NO_RANDOMIZE);
1868        if (!(personality (personality (0xffffffff)) & ADDR_NO_RANDOMIZE))
1869            return 1])])
1870 AC_RUN_IFELSE([PERSONALITY_TEST],
1871               [have_personality=true],
1872               [have_personality=false],
1873               [AC_LINK_IFELSE([PERSONALITY_TEST],
1874                               [have_personality=true],
1875                               [have_personality=false])])
1876 if $have_personality
1877 then
1878     AC_DEFINE([HAVE_PERSONALITY], 1,
1879               [Define if you support the personality syscall.])
1880 fi
1881
1882 dnl Set the host's .gdbinit filename.
1883 case $host_os in
1884   go32* | *djgpp*)
1885     gdbinit=gdb.ini
1886     ;;
1887   *)
1888     gdbinit=.gdbinit
1889     ;;
1890 esac
1891 AC_DEFINE_UNQUOTED(GDBINIT,"$gdbinit",[The .gdbinit filename.])
1892
1893 dnl Handle optional features that can be enabled.
1894
1895 # Support for --with-sysroot is a copy of GDB_AC_WITH_DIR,
1896 # except that the argument to --with-sysroot is optional.
1897 # --with-sysroot (or --with-sysroot=yes) sets the default sysroot path.
1898 if test "x$with_sysroot" = xyes; then
1899   with_sysroot="${exec_prefix}/${target_alias}/sys-root"
1900 fi
1901 AC_ARG_WITH(sysroot,
1902   AS_HELP_STRING([--with-sysroot@<:@=DIR@:>@],
1903                  [search for usr/lib et al within DIR]),
1904   [TARGET_SYSTEM_ROOT=$withval], [TARGET_SYSTEM_ROOT=])
1905 AC_DEFINE_DIR(TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT,
1906               [search for usr/lib et al within DIR])
1907 AC_SUBST(TARGET_SYSTEM_ROOT)
1908 GDB_AC_DEFINE_RELOCATABLE(TARGET_SYSTEM_ROOT, sysroot, ${ac_define_dir})
1909
1910 GDB_AC_WITH_DIR(SYSTEM_GDBINIT, system-gdbinit,
1911     [automatically load a system-wide gdbinit file],
1912     [])
1913
1914 AC_ARG_ENABLE(werror,
1915   AS_HELP_STRING([--enable-werror], [treat compile warnings as errors]),
1916   [case "${enableval}" in
1917      yes | y) ERROR_ON_WARNING="yes" ;;
1918      no | n)  ERROR_ON_WARNING="no" ;;
1919      *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;
1920    esac])
1921
1922 # Enable -Werror by default when using gcc in C mode.  Leave it off
1923 # for C++ until we're warning clean.  Turn it off for releases.
1924 if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" \
1925    && test x"$enable_build_with_cxx" != x"yes" \
1926    && $development; then
1927     ERROR_ON_WARNING=yes
1928 fi
1929
1930 WERROR_CFLAGS=""
1931 if test "${ERROR_ON_WARNING}" = yes ; then
1932     WERROR_CFLAGS="-Werror"
1933 fi
1934
1935 # These options work in either C or C++ modes.
1936 build_warnings="-Wall -Wpointer-arith \
1937 -Wno-unused -Wunused-value -Wunused-function \
1938 -Wno-switch -Wno-char-subscripts \
1939 -Wempty-body"
1940
1941 # Now add in C and C++ specific options, depending on mode.
1942 if test "$enable_build_with_cxx" = "yes"; then
1943    build_warnings="$build_warnings -Wno-sign-compare -Wno-write-strings \
1944 -Wno-narrowing"
1945 else
1946    build_warnings="$build_warnings -Wpointer-sign -Wmissing-prototypes \
1947 -Wdeclaration-after-statement -Wmissing-parameter-type \
1948 -Wold-style-declaration -Wold-style-definition"
1949 fi
1950
1951 # Enable -Wno-format by default when using gcc on mingw since many
1952 # GCC versions complain about %I64.
1953 case "${host}" in
1954   *-*-mingw32*) build_warnings="$build_warnings -Wno-format" ;;
1955   *) build_warnings="$build_warnings -Wformat-nonliteral" ;;
1956 esac
1957
1958 AC_ARG_ENABLE(build-warnings,
1959 AS_HELP_STRING([--enable-build-warnings], [enable build-time compiler warnings if gcc is used]),
1960 [case "${enableval}" in
1961   yes)  ;;
1962   no)   build_warnings="-w";;
1963   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1964         build_warnings="${build_warnings} ${t}";;
1965   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1966         build_warnings="${t} ${build_warnings}";;
1967   *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
1968 esac
1969 if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
1970   echo "Setting compiler warning flags = $build_warnings" 6>&1
1971 fi])dnl
1972 AC_ARG_ENABLE(gdb-build-warnings,
1973 AS_HELP_STRING([--enable-gdb-build-warnings], [enable GDB specific build-time compiler warnings if gcc is used]),
1974 [case "${enableval}" in
1975   yes)  ;;
1976   no)   build_warnings="-w";;
1977   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1978         build_warnings="${build_warnings} ${t}";;
1979   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
1980         build_warnings="${t} ${build_warnings}";;
1981   *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
1982 esac
1983 if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
1984   echo "Setting GDB specific compiler warning flags = $build_warnings" 6>&1
1985 fi])dnl
1986
1987 # The set of warnings supported by a C++ compiler is not the same as
1988 # of the C compiler.
1989 if test "$enable_build_with_cxx" = "yes"; then
1990     AC_LANG_PUSH([C++])
1991 fi
1992
1993 WARN_CFLAGS=""
1994 if test "x${build_warnings}" != x -a "x$GCC" = xyes
1995 then
1996     AC_MSG_CHECKING(compiler warning flags)
1997     # Separate out the -Werror flag as some files just cannot be
1998     # compiled with it enabled.
1999     for w in ${build_warnings}; do
2000         case $w in
2001         -Werr*) WERROR_CFLAGS=-Werror ;;
2002         *)
2003             # Check whether GCC accepts it.
2004             saved_CFLAGS="$CFLAGS"
2005             CFLAGS="$CFLAGS $w"
2006             saved_CXXFLAGS="$CXXFLAGS"
2007             CXXFLAGS="$CXXFLAGS $w"
2008             AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",)
2009             CFLAGS="$saved_CFLAGS"
2010             CXXFLAGS="$saved_CXXFLAGS"
2011         esac
2012     done
2013     AC_MSG_RESULT(${WARN_CFLAGS} ${WERROR_CFLAGS})
2014 fi
2015 AC_SUBST(WARN_CFLAGS)
2016 AC_SUBST(WERROR_CFLAGS)
2017
2018 if test "$enable_build_with_cxx" = "yes"; then
2019    AC_LANG_POP([C++])
2020 fi
2021
2022 # In the Cygwin environment, we need some additional flags.
2023 AC_CACHE_CHECK([for cygwin], gdb_cv_os_cygwin,
2024 [AC_EGREP_CPP(^lose$, [
2025 #if defined (__CYGWIN__) || defined (__CYGWIN32__)
2026 lose
2027 #endif],[gdb_cv_os_cygwin=yes],[gdb_cv_os_cygwin=no])])
2028
2029
2030 dnl Figure out which of the many generic ser-*.c files the _host_ supports.
2031 SER_HARDWIRE="ser-base.o ser-unix.o ser-pipe.o ser-tcp.o"
2032 case ${host} in
2033   *go32* ) SER_HARDWIRE=ser-go32.o ;;
2034   *djgpp* ) SER_HARDWIRE=ser-go32.o ;;
2035   *mingw32*) SER_HARDWIRE="ser-base.o ser-tcp.o ser-mingw.o" ;;
2036 esac
2037 AC_SUBST(SER_HARDWIRE)
2038
2039 # libreadline needs libuser32.a in a cygwin environment
2040 WIN32LIBS=
2041 if test x$gdb_cv_os_cygwin = xyes; then
2042     WIN32LIBS="-luser32"
2043     case "${target}" in
2044         *cygwin*) WIN32LIBS="$WIN32LIBS -limagehlp"
2045         ;;
2046     esac
2047 fi
2048
2049 # The ser-tcp.c module requires sockets.
2050 case ${host} in
2051   *mingw32*)
2052     AC_DEFINE(USE_WIN32API, 1,
2053               [Define if we should use the Windows API, instead of the
2054                POSIX API.  On Windows, we use the Windows API when
2055                building for MinGW, but the POSIX API when building
2056                for Cygwin.])
2057     WIN32LIBS="$WIN32LIBS -lws2_32"
2058     ;;
2059 esac
2060 AC_SUBST(WIN32LIBS)
2061
2062 # Add ELF support to GDB, but only if BFD includes ELF support.
2063 GDB_AC_CHECK_BFD([for ELF support in BFD], gdb_cv_var_elf,
2064                  [bfd_get_elf_phdr_upper_bound (NULL)], elf-bfd.h)
2065 if test $gdb_cv_var_elf = yes; then
2066   CONFIG_OBS="$CONFIG_OBS elfread.o stap-probe.o dtrace-probe.o"
2067   AC_DEFINE(HAVE_ELF, 1,
2068             [Define if ELF support should be included.])
2069   # -ldl is provided by bfd/Makfile.am (LIBDL) <PLUGINS>.
2070   if test "$plugins" = "yes"; then
2071     AC_SEARCH_LIBS(dlopen, dl)
2072   fi
2073 fi
2074
2075 # Add macho support to GDB, but only if BFD includes it.
2076 GDB_AC_CHECK_BFD([for Mach-O support in BFD], gdb_cv_var_macho,
2077                  [bfd_mach_o_lookup_command (NULL, 0, NULL)], mach-o.h)
2078 if test $gdb_cv_var_macho = yes; then
2079   CONFIG_OBS="$CONFIG_OBS machoread.o"
2080 fi
2081
2082 # Add any host-specific objects to GDB.
2083 CONFIG_OBS="${CONFIG_OBS} ${gdb_host_obs}"
2084
2085 # If building on ELF, look for lzma support for embedded compressed debug info.
2086 if test $gdb_cv_var_elf = yes; then
2087   AC_ARG_WITH(lzma,
2088     AS_HELP_STRING([--with-lzma], [support lzma compression (auto/yes/no)]),
2089     [], [with_lzma=auto])
2090   AC_MSG_CHECKING([whether to use lzma])
2091   AC_MSG_RESULT([$with_lzma])
2092
2093   if test "${with_lzma}" != no; then
2094     AC_LIB_HAVE_LINKFLAGS([lzma], [], [#include "lzma.h"],
2095                           [lzma_index_iter iter;
2096                            lzma_index_iter_init (&iter, 0);
2097                            lzma_mf_is_supported (LZMA_MF_HC3);])
2098     if test "$HAVE_LIBLZMA" != yes; then
2099       if test "$with_lzma" = yes; then
2100         AC_MSG_ERROR([missing liblzma for --with-lzma])
2101       fi
2102     fi
2103   fi
2104 fi
2105
2106 LIBGUI="../libgui/src/libgui.a"
2107 GUI_CFLAGS_X="-I${srcdir}/../libgui/src"
2108 AC_SUBST(LIBGUI)
2109 AC_SUBST(GUI_CFLAGS_X)
2110
2111 WIN32LDAPP=
2112 AC_SUBST(WIN32LIBS)
2113 AC_SUBST(WIN32LDAPP)
2114
2115 case "${host}" in
2116 *-*-cygwin* | *-*-mingw* )
2117     configdir="win"
2118     ;;
2119 *)
2120     configdir="unix"
2121     ;;
2122 esac
2123
2124 GDBTKLIBS=
2125 if test "${enable_gdbtk}" = "yes"; then
2126
2127     # Gdbtk must have an absolute path to srcdir in order to run
2128     # properly when not installed.
2129     here=`pwd`
2130     cd ${srcdir}
2131     GDBTK_SRC_DIR=`pwd`
2132     cd $here
2133
2134     SC_PATH_TCLCONFIG
2135
2136     # If $no_tk is nonempty, then we can't do Tk, and there is no
2137     # point to doing Tcl.
2138     SC_PATH_TKCONFIG
2139
2140     if test -z "${no_tcl}" -a -z "${no_tk}"; then
2141         SC_LOAD_TCLCONFIG
2142
2143         # Check for in-tree tcl
2144         here=`pwd`
2145         cd ${srcdir}/..
2146         topdir=`pwd`
2147         cd ${here}
2148
2149         intree="no"
2150         if test "${TCL_SRC_DIR}" = "${topdir}/tcl"; then
2151           intree="yes"
2152         fi
2153
2154         # Find Tcl private headers
2155         if test x"${intree}" = xno; then
2156           CY_AC_TCL_PRIVATE_HEADERS
2157           TCL_INCLUDE="${TCL_INCLUDE_SPEC} ${TCL_PRIVATE_INCLUDE}"
2158           TCL_LIBRARY="${TCL_LIB_SPEC}"
2159           TCL_DEPS=""
2160         else
2161           # If building tcl in the same src tree, private headers
2162           # are not needed, but we need to be sure to use the right
2163           # headers library
2164           TCL_INCLUDE="-I${TCL_SRC_DIR}/generic"
2165           TCL_LIBRARY="${TCL_BUILD_LIB_SPEC}"
2166           TCL_DEPS="../tcl/${configdir}${TCL_LIB_FILE}"
2167         fi
2168         AC_SUBST(TCL_INCLUDE)
2169         AC_SUBST(TCL_LIBRARY)
2170         AC_SUBST(TCL_DEPS)
2171
2172         SC_LOAD_TKCONFIG
2173
2174         # Check for in-tree Tk
2175         intree="no"
2176         if test "${TK_SRC_DIR}" = "${topdir}/tk"; then
2177           intree="yes"
2178         fi
2179
2180         # Find Tk private headers
2181         if test x"${intree}" = xno; then
2182           CY_AC_TK_PRIVATE_HEADERS
2183           TK_INCLUDE="${TK_INCLUDE_SPEC} ${TK_PRIVATE_INCLUDE}"
2184           TK_LIBRARY=${TK_LIB_SPEC}
2185           TK_DEPS=""
2186         else
2187           TK_INCLUDE="-I${TK_SRC_DIR}/generic"
2188           TK_LIBRARY="${TK_BUILD_LIB_SPEC}"
2189           TK_DEPS="../tk/${configdir}/${TK_LIB_FILE}"
2190         fi
2191         AC_SUBST(TK_INCLUDE)
2192         AC_SUBST(TK_LIBRARY)
2193         AC_SUBST(TK_DEPS)
2194         AC_SUBST(TK_XINCLUDES)
2195
2196         ENABLE_CFLAGS="${ENABLE_CFLAGS} \$(SUBDIR_GDBTK_CFLAGS)"
2197
2198         # Include some libraries that Tcl and Tk want.
2199         TCL_LIBS='$(LIBGUI) $(TK) $(TCL) $(X11_LDFLAGS) $(X11_LIBS)'
2200         # Yes, the ordering seems wrong here.  But it isn't.
2201         # TK_LIBS is the list of libraries that need to be linked
2202         # after Tcl/Tk.  Note that this isn't put into LIBS.  If it
2203         # were in LIBS then any link tests after this point would
2204         # try to include things like `$(LIBGUI)', which wouldn't work.
2205         GDBTKLIBS="${TCL_LIBS} ${TK_LIBS}"
2206
2207         CONFIG_OBS="${CONFIG_OBS} \$(SUBDIR_GDBTK_OBS)"
2208         CONFIG_DEPS="${CONFIG_DEPS} \$(SUBDIR_GDBTK_DEPS)"
2209         CONFIG_SRCS="${CONFIG_SRCS} \$(SUBDIR_GDBTK_SRCS)"
2210         CONFIG_ALL="${CONFIG_ALL} all-gdbtk"
2211         CONFIG_CLEAN="${CONFIG_CLEAN} clean-gdbtk"
2212         CONFIG_INSTALL="${CONFIG_INSTALL} install-gdbtk"
2213         CONFIG_UNINSTALL="${CONFIG_UNINSTALL} uninstall-gdbtk"
2214
2215         if test x$gdb_cv_os_cygwin = xyes; then
2216           WIN32LIBS="${WIN32LIBS} -lshell32 -lgdi32 -lcomdlg32 -ladvapi32"
2217           WIN32LDAPP="-Wl,--subsystem,console"
2218           CONFIG_OBS="${CONFIG_OBS} gdbres.o"
2219         fi
2220
2221         AC_CONFIG_SUBDIRS(gdbtk)
2222     fi
2223 fi
2224
2225 AC_SUBST(X_CFLAGS)
2226 AC_SUBST(X_LDFLAGS)
2227 AC_SUBST(X_LIBS)
2228 AC_SUBST(GDBTKLIBS)
2229 AC_SUBST(GDBTK_CFLAGS)
2230 AC_SUBST(GDBTK_SRC_DIR)
2231
2232 AC_PATH_X
2233
2234 # Unlike the sim directory, whether a simulator is linked is controlled by
2235 # presence of a gdb_sim definition in the target configure.tgt entry.
2236 # This code just checks for a few cases where we'd like to ignore those
2237 # definitions, even when they're present in the '.mt' file.  These cases
2238 # are when --disable-sim is specified, or if the simulator directory is
2239 # not part of the source tree.
2240 #
2241 AC_ARG_ENABLE(sim,
2242 AS_HELP_STRING([--enable-sim], [link gdb with simulator]),
2243 [echo "enable_sim = $enable_sim";
2244  echo "enableval = ${enableval}";
2245  case "${enableval}" in
2246   yes) ignore_sim=false ;;
2247   no)  ignore_sim=true ;;
2248   *)   ignore_sim=false ;;
2249  esac],
2250 [ignore_sim=false])
2251
2252 if test ! -d "${srcdir}/../sim"; then
2253   ignore_sim=true
2254 fi
2255
2256 SIM=
2257 SIM_OBS=
2258 if test "${ignore_sim}" = "false"; then
2259   if test x"${gdb_sim}" != x ; then
2260     SIM="${gdb_sim}"
2261     SIM_OBS="remote-sim.o"
2262     AC_DEFINE(WITH_SIM, 1, [Define if the simulator is being linked in.])
2263   fi
2264 fi
2265 AC_SUBST(SIM)
2266 AC_SUBST(SIM_OBS)
2267
2268 AC_SUBST(ENABLE_CFLAGS)
2269 AC_SUBST(PROFILE_CFLAGS)
2270
2271 AC_SUBST(CONFIG_OBS)
2272 AC_SUBST(CONFIG_DEPS)
2273 AC_SUBST(CONFIG_SRCS)
2274 AC_SUBST(CONFIG_ALL)
2275 AC_SUBST(CONFIG_CLEAN)
2276 AC_SUBST(CONFIG_INSTALL)
2277 AC_SUBST(CONFIG_UNINSTALL)
2278
2279 # List of host floatformats.
2280 AC_DEFINE_UNQUOTED(GDB_HOST_FLOAT_FORMAT,$gdb_host_float_format,[Host float floatformat])
2281 AC_DEFINE_UNQUOTED(GDB_HOST_DOUBLE_FORMAT,$gdb_host_double_format,[Host double floatformat])
2282 AC_DEFINE_UNQUOTED(GDB_HOST_LONG_DOUBLE_FORMAT,$gdb_host_long_double_format,[Host long double floatformat])
2283
2284 # target_subdir is used by the testsuite to find the target libraries.
2285 target_subdir=
2286 if test "${host}" != "${target}"; then
2287     target_subdir="${target_alias}/"
2288 fi
2289 AC_SUBST(target_subdir)
2290
2291 frags=
2292 if test "${gdb_native}" = "yes"; then
2293   host_makefile_frag=${srcdir}/config/${gdb_host_cpu}/${gdb_host}.mh
2294   if test ! -f ${host_makefile_frag}; then
2295     AC_MSG_ERROR("*** Gdb does not support native target ${host}")
2296   fi
2297   frags="$frags $host_makefile_frag"
2298 else
2299   host_makefile_frag=/dev/null
2300 fi
2301
2302 AC_SUBST_FILE(host_makefile_frag)
2303 AC_SUBST(frags)
2304
2305 changequote(,)dnl
2306 if test "${gdb_native}" = "yes"; then
2307 # We pick this up from the host configuration file (.mh) because we
2308 # do not have a native configuration Makefile fragment.
2309 nativefile=`sed -n '
2310 s/NAT_FILE[     ]*=[    ]*\([^  ]*\)/\1/p
2311 ' ${host_makefile_frag}`
2312 fi
2313 changequote([,])
2314
2315 if test x"${gdb_osabi}" != x ; then
2316     AC_DEFINE_UNQUOTED(GDB_OSABI_DEFAULT, $gdb_osabi,
2317                        [Define to the default OS ABI for this configuration.])
2318 fi
2319
2320 # Enable multi-ice-gdb-server.
2321 AC_ARG_ENABLE(multi-ice,
2322 AS_HELP_STRING([--enable-multi-ice], [build the multi-ice-gdb-server]),
2323   [case $enableval in
2324     yes | no)
2325       ;;
2326     *) AC_MSG_ERROR([bad value $enableval for --enable-multi-ice]) ;;
2327   esac])
2328 if test "x$enable_multi_ice" = xyes; then
2329    AC_CONFIG_SUBDIRS(multi-ice)
2330 fi
2331
2332 AC_ARG_ENABLE(gdbserver,
2333 AS_HELP_STRING([--enable-gdbserver],
2334                [automatically build gdbserver (yes/no/auto, default is auto)]),
2335 [case "${enableval}" in
2336   yes| no|auto) ;;
2337   *) AC_MSG_ERROR(bad value ${enableval} for --enable-gdbserver option) ;;
2338 esac],[enable_gdbserver=auto])
2339
2340 # We only build gdbserver automatically in a native configuration, and
2341 # only if the user did not explicitly disable its build.
2342 if test "$gdb_native" = "yes" -a "$enable_gdbserver" != "no"; then
2343   AC_MSG_CHECKING(whether gdbserver is supported on this host)
2344   if test "x$build_gdbserver" = xyes; then
2345     AC_MSG_RESULT(yes)
2346     AC_CONFIG_SUBDIRS(gdbserver)
2347     gdbserver_build_enabled=yes
2348   else
2349     AC_MSG_RESULT(no)
2350   fi
2351 fi
2352
2353 # If the user explicitly request the gdbserver to be built, verify that
2354 # we were in fact able to enable it.
2355 if test "$enable_gdbserver" = "yes" -a "$gdbserver_build_enabled" != "yes"; then
2356   AC_MSG_ERROR(Automatic gdbserver build is not supported for this configuration)
2357 fi
2358
2359 # Check for babeltrace and babeltrace-ctf
2360 AC_ARG_WITH(babeltrace,
2361   AC_HELP_STRING([--with-babeltrace], [include babeltrace support (auto/yes/no)]),
2362   [], [with_babeltrace=auto])
2363 AC_MSG_CHECKING([whether to use babeltrace])
2364 AC_MSG_RESULT([$with_babeltrace])
2365
2366 if test "x$with_babeltrace" = "xno"; then
2367   AC_MSG_WARN([babletrace support disabled; GDB is unable to read CTF data.])
2368 else
2369   # Append -Werror to CFLAGS so that configure can catch the warning
2370   # "assignment from incompatible pointer type", which is related to
2371   # the babeltrace change from 1.0.3 to 1.1.0.  Babeltrace 1.1.0 works
2372   # in GDB, while babeltrace 1.0.3 is broken.
2373   # AC_LIB_HAVE_LINKFLAGS may modify CPPFLAGS in it, so it should be
2374   # safe to save and restore CFLAGS here.
2375   saved_CFLAGS=$CFLAGS
2376   CFLAGS="$CFLAGS -Werror"
2377   AC_LIB_HAVE_LINKFLAGS([babeltrace], [babeltrace-ctf],
2378                         [#include <babeltrace/babeltrace.h>
2379                          #include <babeltrace/ctf/events.h>
2380                          #include <babeltrace/ctf/iterator.h>],
2381                         [struct bt_iter_pos *pos = bt_iter_get_pos (bt_ctf_get_iter (NULL));
2382                         struct bt_ctf_event *event = NULL;
2383                         const struct bt_definition *scope;
2384
2385                         bt_iter_set_pos (bt_ctf_get_iter (NULL), pos);
2386                         scope = bt_ctf_get_top_level_scope (event,
2387                                                            BT_STREAM_EVENT_HEADER);
2388                         bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id"));
2389                         ])
2390   CFLAGS=$saved_CFLAGS
2391
2392   if test "$HAVE_LIBBABELTRACE" != yes; then
2393      if test "$with_babeltrace" = yes; then
2394        AC_MSG_ERROR([babeltrace is missing or unusable])
2395      else
2396        AC_MSG_WARN([babeltrace is missing or unusable; GDB is unable to read CTF data.])
2397      fi
2398   fi
2399 fi
2400
2401 # If nativefile (NAT_FILE) is not set in config/*/*.m[ht] files, we link
2402 # to an empty version.
2403
2404 files=
2405 links=
2406
2407 rm -f nm.h
2408 if test "${nativefile}" != ""; then
2409     case "${nativefile}" in
2410       nm-*.h ) GDB_NM_FILE="config/${gdb_host_cpu}/${nativefile}" ;;
2411       * ) GDB_NM_FILE="${nativefile}"
2412     esac
2413     files="${files} ${GDB_NM_FILE}"
2414     links="${links} nm.h"
2415     AC_DEFINE_UNQUOTED(GDB_NM_FILE, "${GDB_NM_FILE}", [nativefile])
2416 fi
2417 AC_SUBST(GDB_NM_FILE)
2418
2419 AC_LINK_FILES($files, $links)
2420
2421 dnl Check for exe extension set on certain hosts (e.g. Win32)
2422 AC_EXEEXT
2423
2424 dnl  Detect the character set used by this host.
2425 dnl  At the moment, we just assume it's UTF-8.
2426 AC_DEFINE(GDB_DEFAULT_HOST_CHARSET, "UTF-8",
2427           [Define to be a string naming the default host character set.])
2428
2429 GDB_AC_TRANSFORM([gdb], [GDB_TRANSFORM_NAME])
2430 GDB_AC_TRANSFORM([gcore], [GCORE_TRANSFORM_NAME])
2431 AC_CONFIG_FILES([gcore], [chmod +x gcore])
2432
2433 AC_OUTPUT(Makefile gdb-gdb.gdb doc/Makefile data-directory/Makefile,
2434 [
2435 case x$CONFIG_HEADERS in
2436 xconfig.h:config.in)
2437 echo > stamp-h ;;
2438 esac
2439 ])
2440
2441 exit 0