gdb/gdbserver/configure.ac

   1 dnl Autoconf configure script for GDB server.
   2 dnl Copyright (C) 2000-2013 Free Software Foundation, Inc.
   3 dnl
   4 dnl This file is part of GDB.
   5 dnl
   6 dnl This program is free software; you can redistribute it and/or modify
   7 dnl it under the terms of the GNU General Public License as published by
   8 dnl the Free Software Foundation; either version 3 of the License, or
   9 dnl (at your option) any later version.
  10 dnl
  11 dnl This program is distributed in the hope that it will be useful,
  12 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 dnl GNU General Public License for more details.
  15 dnl
  16 dnl You should have received a copy of the GNU General Public License
  17 dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 dnl Process this file with autoconf to produce a configure script.
  20
  21 AC_PREREQ(2.59)dnl
  22
  23 AC_INIT(server.c)
  24 AC_CONFIG_HEADER(config.h:config.in)
  25
  26 AM_MAINTAINER_MODE
  27
  28 AC_PROG_CC
  29 AC_GNU_SOURCE
  30 AC_SYS_LARGEFILE
  31
  32 AC_CANONICAL_SYSTEM
  33
  34 AC_PROG_INSTALL
  35 AC_PROG_RANLIB
  36
  37 AC_ARG_PROGRAM
  38
  39 AC_HEADER_STDC
  40 AC_HEADER_DIRENT
  41
  42 AC_FUNC_ALLOCA
  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 # Configure gnulib.  We can't use AC_CONFIG_SUBDIRS as that'd expect
  60 # to find the the source subdir to be configured directly under
  61 # gdbserver/.  We need to build gnulib under some other directory not
  62 # "gnulib", to avoid the problem of both GDB and GDBserver wanting to
  63 # build it in the same directory, when building in the source dir.
  64 ACX_CONFIGURE_DIR(["../gnulib"], ["build-gnulib-gdbserver"])
  65
  66 AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
  67                  proc_service.h sys/procfs.h thread_db.h linux/elf.h dnl
  68                  stdlib.h unistd.h dnl
  69                  errno.h fcntl.h signal.h sys/file.h malloc.h dnl
  70                  sys/ioctl.h netinet/in.h sys/socket.h netdb.h dnl
  71                  netinet/tcp.h arpa/inet.h sys/wait.h wait.h sys/un.h dnl
  72                  linux/perf_event.h)
  73 AC_CHECK_FUNCS(pread pwrite pread64 readlink fdwalk pipe2)
  74 AC_REPLACE_FUNCS(vasprintf vsnprintf)
  75
  76 # Check for UST
  77 ustlibs=""
  78 ustinc=""
  79
  80 AC_ARG_WITH(ust, [  --with-ust=PATH       Specify prefix directory for the installed UST package
  81                           Equivalent to --with-ust-include=PATH/include
  82                           plus --with-ust-lib=PATH/lib])
  83 AC_ARG_WITH(ust_include, [  --with-ust-include=PATH Specify directory for installed UST include files])
  84 AC_ARG_WITH(ust_lib, [  --with-ust-lib=PATH   Specify the directory for the installed UST library])
  85
  86 case $with_ust in
  87   no)
  88     ustlibs=
  89     ustinc=
  90     ;;
  91   "" | yes)
  92     ustlibs=" -lust "
  93     ustinc=""
  94     ;;
  95   *)
  96     ustlibs="-L$with_ust/lib -lust"
  97     ustinc="-I$with_ust/include "
  98     ;;
  99 esac
 100 if test "x$with_ust_include" != x; then
 101   ustinc="-I$with_ust_include "
 102 fi
 103 if test "x$with_ust_lib" != x; then
 104   ustlibs="-L$with_ust_lib -lust"
 105 fi
 106
 107 if test "x$with_ust" != "xno"; then
 108   saved_CFLAGS="$CFLAGS"
 109   CFLAGS="$CFLAGS $ustinc"
 110   AC_MSG_CHECKING([for ust])
 111   AC_TRY_COMPILE([
 112 #define CONFIG_UST_GDB_INTEGRATION
 113 #include <ust/ust.h>
 114   ],[],
 115   [AC_MSG_RESULT([yes]); AC_DEFINE(HAVE_UST, 1, [Define if UST is available])],
 116   [AC_MSG_RESULT([no]); ustlibs= ; ustinc= ])
 117   CFLAGS="$saved_CFLAGS"
 118 fi
 119
 120 # Flags needed for UST
 121 AC_SUBST(ustlibs)
 122 AC_SUBST(ustinc)
 123
 124 AC_ARG_ENABLE(werror,
 125   AS_HELP_STRING([--enable-werror], [treat compile warnings as errors]),
 126   [case "${enableval}" in
 127      yes | y) ERROR_ON_WARNING="yes" ;;
 128      no | n)  ERROR_ON_WARNING="no" ;;
 129      *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;
 130    esac])
 131
 132 # Enable -Werror by default when using gcc
 133 if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
 134     ERROR_ON_WARNING=yes
 135 fi
 136
 137 WERROR_CFLAGS=""
 138 if test "${ERROR_ON_WARNING}" = yes ; then
 139     WERROR_CFLAGS="-Werror"
 140 fi
 141
 142 build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
 143 -Wformat-nonliteral -Wno-char-subscripts -Wempty-body"
 144
 145 WARN_CFLAGS=""
 146 if test "x$GCC" = xyes
 147 then
 148     AC_MSG_CHECKING(compiler warning flags)
 149     # Separate out the -Werror flag as some files just cannot be
 150     # compiled with it enabled.
 151     for w in ${build_warnings}; do
 152         case $w in
 153         -Werr*) WERROR_CFLAGS=-Werror ;;
 154         *) # Check that GCC accepts it
 155             saved_CFLAGS="$CFLAGS"
 156             CFLAGS="$CFLAGS $w"
 157             AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",)
 158             CFLAGS="$saved_CFLAGS"
 159         esac
 160     done
 161     AC_MSG_RESULT(${WARN_CFLAGS} ${WERROR_CFLAGS})
 162 fi
 163 AC_SUBST(WARN_CFLAGS)
 164 AC_SUBST(WERROR_CFLAGS)
 165
 166 dnl dladdr is glibc-specific.  It is used by thread-db.c but only for
 167 dnl debugging messages.  It lives in -ldl which is handled below so we don't
 168 dnl use AC_CHECK_LIB (or AC_SEARCH_LIBS) here.  Instead we just temporarily
 169 dnl augment LIBS.
 170 old_LIBS="$LIBS"
 171 LIBS="$LIBS -ldl"
 172 AC_CHECK_FUNCS(dladdr)
 173 LIBS="$old_LIBS"
 174
 175 have_errno=no
 176 AC_MSG_CHECKING(for errno)
 177 AC_TRY_LINK([
 178 #if HAVE_ERRNO_H
 179 #include <errno.h>
 180 #endif], [static int x; x = errno;],
 181   [AC_MSG_RESULT(yes - in errno.h); AC_DEFINE(HAVE_ERRNO, 1, [Define if errno is available]) have_errno=yes])
 182 if test $have_errno = no; then
 183 AC_TRY_LINK([
 184 #if HAVE_ERRNO_H
 185 #include <errno.h>
 186 #endif], [extern int errno; static int x; x = errno;],
 187   [AC_MSG_RESULT(yes - must define); AC_DEFINE(HAVE_ERRNO, 1, [Define if errno is available]) AC_DEFINE(MUST_DEFINE_ERRNO, 1, [Checking if errno must be defined])],
 188   [AC_MSG_RESULT(no)])
 189 fi
 190
 191 AC_CHECK_DECLS([strerror, strstr, perror, vasprintf, vsnprintf])
 192
 193 AC_CHECK_TYPES(socklen_t, [], [],
 194 [#include <sys/types.h>
 195 #include <sys/socket.h>
 196 ])
 197
 198 AC_CHECK_TYPES([Elf32_auxv_t, Elf64_auxv_t], [], [],
 199 #include <elf.h>
 200 )
 201
 202 ACX_PKGVERSION([GDB])
 203 ACX_BUGURL([http://www.gnu.org/software/gdb/bugs/])
 204 AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
 205 AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
 206
 207 # Check for various supplementary target information (beyond the
 208 # triplet) which might affect the choices in configure.srv.
 209 case "${target}" in
 210 changequote(,)dnl
 211   i[34567]86-*-linux*)
 212 changequote([,])dnl
 213     AC_CACHE_CHECK([if building for x86-64], [gdb_cv_i386_is_x86_64],
 214                    [save_CPPFLAGS="$CPPFLAGS"
 215                     CPPFLAGS="$CPPFLAGS $CFLAGS"
 216                     AC_EGREP_CPP([got it], [
 217 #if __x86_64__
 218 got it
 219 #endif
 220                  ], [gdb_cv_i386_is_x86_64=yes],
 221                     [gdb_cv_i386_is_x86_64=no])
 222                     CPPFLAGS="$save_CPPFLAGS"])
 223     ;;
 224   m68k-*-*)
 225     AC_CACHE_CHECK([if building for Coldfire], [gdb_cv_m68k_is_coldfire],
 226                    [save_CPPFLAGS="$CPPFLAGS"
 227                     CPPFLAGS="$CPPFLAGS $CFLAGS"
 228                     AC_EGREP_CPP([got it], [
 229 #ifdef __mcoldfire__
 230 got it
 231 #endif
 232                  ], [gdb_cv_m68k_is_coldfire=yes],
 233                     [gdb_cv_m68k_is_coldfire=no])
 234                     CPPFLAGS="$save_CPPFLAGS"])
 235     ;;
 236 esac
 237
 238 . ${srcdir}/configure.srv
 239
 240 if test "${srv_mingwce}" = "yes"; then
 241   LIBS="$LIBS -lws2"
 242 elif test "${srv_mingw}" = "yes"; then
 243   LIBS="$LIBS -lws2_32"
 244 elif test "${srv_qnx}" = "yes"; then
 245   LIBS="$LIBS -lsocket"
 246 elif test "${srv_lynxos}" = "yes"; then
 247   LIBS="$LIBS -lnetinet"
 248 fi
 249
 250 if test "${srv_mingw}" = "yes"; then
 251   AC_DEFINE(USE_WIN32API, 1,
 252             [Define if we should use the Windows API, instead of the
 253              POSIX API.  On Windows, we use the Windows API when
 254              building for MinGW, but the POSIX API when building
 255              for Cygwin.])
 256 fi
 257
 258 if test "${srv_linux_usrregs}" = "yes"; then
 259   AC_DEFINE(HAVE_LINUX_USRREGS, 1,
 260             [Define if the target supports PTRACE_PEEKUSR for register ]
 261             [access.])
 262 fi
 263
 264 if test "${srv_linux_regsets}" = "yes"; then
 265   AC_DEFINE(HAVE_LINUX_REGSETS, 1,
 266             [Define if the target supports register sets.])
 267
 268   AC_MSG_CHECKING(for PTRACE_GETREGS)
 269   AC_CACHE_VAL(gdbsrv_cv_have_ptrace_getregs,
 270   [AC_TRY_COMPILE([#include <sys/ptrace.h>],
 271                   [PTRACE_GETREGS;],
 272                   [gdbsrv_cv_have_ptrace_getregs=yes],
 273                   [gdbsrv_cv_have_ptrace_getregs=no])])
 274   AC_MSG_RESULT($gdbsrv_cv_have_ptrace_getregs)
 275   if test "${gdbsrv_cv_have_ptrace_getregs}" = "yes"; then
 276     AC_DEFINE(HAVE_PTRACE_GETREGS, 1,
 277               [Define if the target supports PTRACE_GETREGS for register ]
 278               [access.])
 279   fi
 280
 281   AC_MSG_CHECKING(for PTRACE_GETFPXREGS)
 282   AC_CACHE_VAL(gdbsrv_cv_have_ptrace_getfpxregs,
 283   [AC_TRY_COMPILE([#include <sys/ptrace.h>],
 284                   [PTRACE_GETFPXREGS;],
 285                   [gdbsrv_cv_have_ptrace_getfpxregs=yes],
 286                   [gdbsrv_cv_have_ptrace_getfpxregs=no])])
 287   AC_MSG_RESULT($gdbsrv_cv_have_ptrace_getfpxregs)
 288   if test "${gdbsrv_cv_have_ptrace_getfpxregs}" = "yes"; then
 289     AC_DEFINE(HAVE_PTRACE_GETFPXREGS, 1,
 290               [Define if the target supports PTRACE_GETFPXREGS for extended ]
 291               [register access.])
 292   fi
 293 fi
 294
 295 if test "${srv_linux_btrace}" = "yes"; then
 296   AC_DEFINE(HAVE_LINUX_BTRACE, 1,
 297             [Define if the target supports branch tracing.])
 298 fi
 299
 300 if test "$ac_cv_header_sys_procfs_h" = yes; then
 301   BFD_HAVE_SYS_PROCFS_TYPE(lwpid_t)
 302   BFD_HAVE_SYS_PROCFS_TYPE(psaddr_t)
 303   BFD_HAVE_SYS_PROCFS_TYPE(prgregset_t)
 304   BFD_HAVE_SYS_PROCFS_TYPE(elf_fpregset_t)
 305 fi
 306
 307 dnl Some systems (e.g., Android) have lwpid_t defined in libthread_db.h.
 308 if test "$bfd_cv_have_sys_procfs_type_lwpid_t" != yes; then
 309   GDBSERVER_HAVE_THREAD_DB_TYPE(lwpid_t)
 310 fi
 311
 312 dnl Some systems (e.g., Android) have psaddr_t defined in libthread_db.h.
 313 if test "$bfd_cv_have_sys_procfs_type_psaddr_t" != yes; then
 314   GDBSERVER_HAVE_THREAD_DB_TYPE(psaddr_t)
 315 fi
 316
 317 dnl Check for libdl, but do not add it to LIBS as only gdbserver
 318 dnl needs it (and gdbreplay doesn't).
 319 old_LIBS="$LIBS"
 320 AC_CHECK_LIB(dl, dlopen)
 321 LIBS="$old_LIBS"
 322
 323 srv_thread_depfiles=
 324 srv_libs=
 325
 326 if test "$srv_linux_thread_db" = "yes"; then
 327   if test "$ac_cv_lib_dl_dlopen" = "yes"; then
 328     srv_libs="-ldl"
 329     AC_MSG_CHECKING(for the dynamic export flag)
 330     old_LDFLAGS="$LDFLAGS"
 331     # Older GNU ld supports --export-dynamic but --dynamic-list may not be
 332     # supported there.
 333     RDYNAMIC="-Wl,--dynamic-list=${srcdir}/proc-service.list"
 334     LDFLAGS="$LDFLAGS $RDYNAMIC"
 335     AC_TRY_LINK([], [],
 336                 [found="-Wl,--dynamic-list"
 337                  RDYNAMIC='-Wl,--dynamic-list=$(srcdir)/proc-service.list'],
 338                 [RDYNAMIC="-rdynamic"
 339                  LDFLAGS="$old_LDFLAGS $RDYNAMIC"
 340                  AC_TRY_LINK([], [],
 341                              [found="-rdynamic"],
 342                              [found="no"
 343                               RDYNAMIC=""])])
 344     AC_SUBST(RDYNAMIC)
 345     LDFLAGS="$old_LDFLAGS"
 346     AC_MSG_RESULT($found)
 347   else
 348     srv_libs="-lthread_db"
 349   fi
 350
 351   srv_thread_depfiles="thread-db.o proc-service.o"
 352   AC_DEFINE(USE_THREAD_DB, 1, [Define if we should use libthread_db.])
 353   AC_CACHE_CHECK([for TD_VERSION], gdbsrv_cv_have_td_version,
 354   [AC_TRY_COMPILE([#include <thread_db.h>], [TD_VERSION;],
 355                   [gdbsrv_cv_have_td_version=yes],
 356                   [gdbsrv_cv_have_td_version=no])])
 357   if test $gdbsrv_cv_have_td_version = yes; then
 358     AC_DEFINE(HAVE_TD_VERSION, 1, [Define if TD_VERSION is available.])
 359   fi
 360 fi
 361
 362 AC_ARG_WITH(libthread-db,
 363 AS_HELP_STRING([--with-libthread-db=PATH], [use given libthread_db directly]),
 364 [srv_libthread_db_path="${withval}"
 365   srv_libs="$srv_libthread_db_path"
 366 ])
 367
 368 if test "$srv_libs" != "" -a "$srv_libs" != "-ldl"; then
 369   AC_DEFINE(USE_LIBTHREAD_DB_DIRECTLY, 1, [Define if we should use libthread_db directly.])
 370 fi
 371
 372 if test "$srv_xmlfiles" != ""; then
 373   srv_xmlbuiltin="xml-builtin.o"
 374   AC_DEFINE(USE_XML, 1, [Define if an XML target description is available.])
 375
 376   tmp_xmlfiles=$srv_xmlfiles
 377   srv_xmlfiles=""
 378   for f in $tmp_xmlfiles; do
 379     srv_xmlfiles="$srv_xmlfiles \$(XML_DIR)/$f"
 380   done
 381 fi
 382
 383 GDBSERVER_DEPFILES="$srv_regobj $srv_tgtobj $srv_hostio_err_objs $srv_thread_depfiles"
 384 GDBSERVER_LIBS="$srv_libs"
 385
 386 dnl Check whether the target supports __sync_*_compare_and_swap.
 387 AC_CACHE_CHECK([whether the target supports __sync_*_compare_and_swap],
 388                 gdbsrv_cv_have_sync_builtins, [
 389 AC_TRY_LINK([], [int foo, bar; bar = __sync_val_compare_and_swap(&foo, 0, 1);],
 390                 gdbsrv_cv_have_sync_builtins=yes,
 391                 gdbsrv_cv_have_sync_builtins=no)])
 392 if test $gdbsrv_cv_have_sync_builtins = yes; then
 393   AC_DEFINE(HAVE_SYNC_BUILTINS, 1,
 394     [Define to 1 if the target supports __sync_*_compare_and_swap])
 395 fi
 396
 397 dnl Check for -fvisibility=hidden support in the compiler.
 398 saved_cflags="$CFLAGS"
 399 CFLAGS="$CFLAGS -fvisibility=hidden"
 400 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
 401                         [gdbsrv_cv_have_visibility_hidden=yes],
 402                         [gdbsrv_cv_have_visibility_hidden=no])
 403 CFLAGS="$saved_cflags"
 404
 405 dnl Check if we can disable the virtual address space randomization.
 406 dnl The functionality of setarch -R.
 407 AC_CHECK_DECLS([ADDR_NO_RANDOMIZE],,, [#include <sys/personality.h>])
 408 define([PERSONALITY_TEST], [AC_LANG_PROGRAM([#include <sys/personality.h>], [
 409 #      if !HAVE_DECL_ADDR_NO_RANDOMIZE
 410 #       define ADDR_NO_RANDOMIZE 0x0040000
 411 #      endif
 412        /* Test the flag could be set and stays set.  */
 413        personality (personality (0xffffffff) | ADDR_NO_RANDOMIZE);
 414        if (!(personality (personality (0xffffffff)) & ADDR_NO_RANDOMIZE))
 415            return 1])])
 416 AC_RUN_IFELSE([PERSONALITY_TEST],
 417               [gdbsrv_cv_have_personality=true],
 418               [gdbsrv_cv_have_personality=false],
 419               [AC_LINK_IFELSE([PERSONALITY_TEST],
 420                               [gdbsrv_cv_have_personality=true],
 421                               [gdbsrv_cv_have_personality=false])])
 422 if $gdbsrv_cv_have_personality
 423 then
 424     AC_DEFINE([HAVE_PERSONALITY], 1,
 425               [Define if you support the personality syscall.])
 426 fi
 427
 428
 429 IPA_DEPFILES=""
 430 extra_libraries=""
 431
 432 # check whether to enable the inprocess agent
 433 if test "$ipa_obj" != "" \
 434    -a "$gdbsrv_cv_have_sync_builtins" = yes \
 435    -a "$gdbsrv_cv_have_visibility_hidden" = yes; then
 436    have_ipa=true
 437 else
 438    have_ipa=false
 439 fi
 440
 441 AC_ARG_ENABLE(inprocess-agent,
 442 AS_HELP_STRING([--enable-inprocess-agent], [inprocess agent]),
 443 [case "$enableval" in
 444   yes) want_ipa=true ;;
 445   no) want_ipa=false ;;
 446   *) AC_MSG_ERROR([bad value $enableval for inprocess-agent]) ;;
 447 esac],
 448 [want_ipa=$have_ipa])
 449
 450 if $want_ipa ; then
 451    if $have_ipa ; then
 452      IPA_DEPFILES="$ipa_obj"
 453      extra_libraries="$extra_libraries libinproctrace.so"
 454    else
 455      AC_MSG_ERROR([inprocess agent not supported for this target])
 456    fi
 457 fi
 458
 459 AC_SUBST(GDBSERVER_DEPFILES)
 460 AC_SUBST(GDBSERVER_LIBS)
 461 AC_SUBST(srv_xmlbuiltin)
 462 AC_SUBST(srv_xmlfiles)
 463 AC_SUBST(IPA_DEPFILES)
 464 AC_SUBST(extra_libraries)
 465
 466 GNULIB=build-gnulib-gdbserver/import
 467
 468 GNULIB_STDINT_H=
 469 if test x"$STDINT_H" != x; then
 470   GNULIB_STDINT_H=$GNULIB/$STDINT_H
 471 fi
 472 AC_SUBST(GNULIB_STDINT_H)
 473
 474 AC_OUTPUT(Makefile,
 475 [case x$CONFIG_HEADERS in
 476 xconfig.h:config.in)
 477 echo > stamp-h ;;
 478 esac
 479 ])