gdb/gdbserver/configure.ac

   1 dnl Autoconf configure script for GDB server.
   2 dnl Copyright (C) 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
   3 dnl 2010, 2011 Free Software Foundation, Inc.
   4 dnl
   5 dnl This file is part of GDB.
   6 dnl
   7 dnl This program is free software; you can redistribute it and/or modify
   8 dnl it under the terms of the GNU General Public License as published by
   9 dnl the Free Software Foundation; either version 3 of the License, or
  10 dnl (at your option) any later version.
  11 dnl
  12 dnl This program is distributed in the hope that it will be useful,
  13 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 dnl GNU General Public License for more details.
  16 dnl
  17 dnl You should have received a copy of the GNU General Public License
  18 dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 dnl Process this file with autoconf to produce a configure script.
  21
  22 AC_PREREQ(2.59)dnl
  23
  24 AC_INIT(server.c)
  25 AC_CONFIG_HEADER(config.h:config.in)
  26 AC_CONFIG_LIBOBJ_DIR(../gnulib)
  27
  28 AC_PROG_CC
  29 AC_GNU_SOURCE
  30
  31 AC_CANONICAL_SYSTEM
  32
  33 AC_PROG_INSTALL
  34
  35 AC_ARG_PROGRAM
  36
  37 AC_HEADER_STDC
  38
  39 AC_FUNC_ALLOCA
  40 AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
  41                  proc_service.h sys/procfs.h thread_db.h linux/elf.h dnl
  42                  stdlib.h unistd.h dnl
  43                  errno.h fcntl.h signal.h sys/file.h malloc.h dnl
  44                  sys/ioctl.h netinet/in.h sys/socket.h netdb.h dnl
  45                  netinet/tcp.h arpa/inet.h sys/wait.h)
  46 AC_CHECK_FUNCS(pread pwrite pread64)
  47 AC_REPLACE_FUNCS(memmem vasprintf vsnprintf)
  48
  49 # Check for UST
  50 ustlibs=""
  51 ustinc=""
  52
  53 AC_ARG_WITH(ust, [  --with-ust=PATH       Specify prefix directory for the installed UST package
  54                           Equivalent to --with-ust-include=PATH/include
  55                           plus --with-ust-lib=PATH/lib])
  56 AC_ARG_WITH(ust_include, [  --with-ust-include=PATH Specify directory for installed UST include files])
  57 AC_ARG_WITH(ust_lib, [  --with-ust-lib=PATH   Specify the directory for the installed UST library])
  58
  59 case $with_ust in
  60   no)
  61     ustlibs=
  62     ustinc=
  63     ;;
  64   "" | yes)
  65     ustlibs=" -lust "
  66     ustinc=""
  67     ;;
  68   *)
  69     ustlibs="-L$with_ust/lib -lust"
  70     ustinc="-I$with_ust/include "
  71     ;;
  72 esac
  73 if test "x$with_ust_include" != x; then
  74   ustinc="-I$with_ust_include "
  75 fi
  76 if test "x$with_ust_lib" != x; then
  77   ustlibs="-L$with_ust_lib -lust"
  78 fi
  79
  80 if test "x$with_ust" != "xno"; then
  81   saved_CFLAGS="$CFLAGS"
  82   CFLAGS="$CFLAGS $ustinc"
  83   AC_MSG_CHECKING([for ust])
  84   AC_TRY_COMPILE([
  85 #define CONFIG_UST_GDB_INTEGRATION
  86 #include <ust/ust.h>
  87   ],[],
  88   [AC_MSG_RESULT([yes]); AC_DEFINE(HAVE_UST, 1, [Define if UST is available])],
  89   [AC_MSG_RESULT([no]); ustlibs= ; ustinc= ])
  90   CFLAGS="$saved_CFLAGS"
  91 fi
  92
  93 # Flags needed for UST
  94 AC_SUBST(ustlibs)
  95 AC_SUBST(ustinc)
  96
  97 AC_ARG_ENABLE(werror,
  98   AS_HELP_STRING([--enable-werror], [treat compile warnings as errors]),
  99   [case "${enableval}" in
 100      yes | y) ERROR_ON_WARNING="yes" ;;
 101      no | n)  ERROR_ON_WARNING="no" ;;
 102      *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;
 103    esac])
 104
 105 # Enable -Werror by default when using gcc
 106 if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
 107     ERROR_ON_WARNING=yes
 108 fi
 109
 110 WERROR_CFLAGS=""
 111 if test "${ERROR_ON_WARNING}" = yes ; then
 112     WERROR_CFLAGS="-Werror"
 113 fi
 114
 115 build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
 116 -Wformat-nonliteral -Wno-char-subscripts"
 117
 118 WARN_CFLAGS=""
 119 if test "x$GCC" = xyes
 120 then
 121     AC_MSG_CHECKING(compiler warning flags)
 122     # Separate out the -Werror flag as some files just cannot be
 123     # compiled with it enabled.
 124     for w in ${build_warnings}; do
 125         case $w in
 126         -Werr*) WERROR_CFLAGS=-Werror ;;
 127         *) # Check that GCC accepts it
 128             saved_CFLAGS="$CFLAGS"
 129             CFLAGS="$CFLAGS $w"
 130             AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",)
 131             CFLAGS="$saved_CFLAGS"
 132         esac
 133     done
 134     AC_MSG_RESULT(${WARN_CFLAGS} ${WERROR_CFLAGS})
 135 fi
 136 AC_SUBST(WARN_CFLAGS)
 137 AC_SUBST(WERROR_CFLAGS)
 138
 139 dnl dladdr is glibc-specific.  It is used by thread-db.c but only for
 140 dnl debugging messages.  It lives in -ldl which is handled below so we don't
 141 dnl use AC_CHECK_LIB (or AC_SEARCH_LIBS) here.  Instead we just temporarily
 142 dnl augment LIBS.
 143 old_LIBS="$LIBS"
 144 LIBS="$LIBS -ldl"
 145 AC_CHECK_FUNCS(dladdr)
 146 LIBS="$old_LIBS"
 147
 148 have_errno=no
 149 AC_MSG_CHECKING(for errno)
 150 AC_TRY_LINK([
 151 #if HAVE_ERRNO_H
 152 #include <errno.h>
 153 #endif], [static int x; x = errno;],
 154   [AC_MSG_RESULT(yes - in errno.h); AC_DEFINE(HAVE_ERRNO, 1, [Define if errno is available]) have_errno=yes])
 155 if test $have_errno = no; then
 156 AC_TRY_LINK([
 157 #if HAVE_ERRNO_H
 158 #include <errno.h>
 159 #endif], [extern int errno; static int x; x = errno;],
 160   [AC_MSG_RESULT(yes - must define); AC_DEFINE(HAVE_ERRNO, 1, [Define if errno is available]) AC_DEFINE(MUST_DEFINE_ERRNO, 1, [Checking if errno must be defined])],
 161   [AC_MSG_RESULT(no)])
 162 fi
 163
 164 AC_CHECK_DECLS([strerror, perror, memmem, vasprintf, vsnprintf])
 165
 166 AC_CHECK_TYPES(socklen_t, [], [],
 167 [#include <sys/types.h>
 168 #include <sys/socket.h>
 169 ])
 170
 171 ACX_PKGVERSION([GDB])
 172 ACX_BUGURL([http://www.gnu.org/software/gdb/bugs/])
 173 AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
 174 AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
 175
 176 # Check for various supplementary target information (beyond the
 177 # triplet) which might affect the choices in configure.srv.
 178 case "${target}" in
 179 changequote(,)dnl
 180   i[34567]86-*-linux*)
 181 changequote([,])dnl
 182     AC_CACHE_CHECK([if building for x86-64], [gdb_cv_i386_is_x86_64],
 183                    [save_CPPFLAGS="$CPPFLAGS"
 184                     CPPFLAGS="$CPPFLAGS $CFLAGS"
 185                     AC_EGREP_CPP([got it], [
 186 #if __x86_64__
 187 got it
 188 #endif
 189                  ], [gdb_cv_i386_is_x86_64=yes],
 190                     [gdb_cv_i386_is_x86_64=no])
 191                     CPPFLAGS="$save_CPPFLAGS"])
 192     ;;
 193   m68k-*-*)
 194     AC_CACHE_CHECK([if building for Coldfire], [gdb_cv_m68k_is_coldfire],
 195                    [save_CPPFLAGS="$CPPFLAGS"
 196                     CPPFLAGS="$CPPFLAGS $CFLAGS"
 197                     AC_EGREP_CPP([got it], [
 198 #ifdef __mcoldfire__
 199 got it
 200 #endif
 201                  ], [gdb_cv_m68k_is_coldfire=yes],
 202                     [gdb_cv_m68k_is_coldfire=no])
 203                     CPPFLAGS="$save_CPPFLAGS"])
 204     ;;
 205 esac
 206
 207 . ${srcdir}/configure.srv
 208
 209 if test "${srv_mingwce}" = "yes"; then
 210   LIBS="$LIBS -lws2"
 211 elif test "${srv_mingw}" = "yes"; then
 212   LIBS="$LIBS -lws2_32"
 213 elif test "${srv_qnx}" = "yes"; then
 214   LIBS="$LIBS -lsocket"
 215 elif test "${srv_lynxos}" = "yes"; then
 216   LIBS="$LIBS -lnetinet"
 217 fi
 218
 219 if test "${srv_mingw}" = "yes"; then
 220   AC_DEFINE(USE_WIN32API, 1,
 221             [Define if we should use the Windows API, instead of the
 222              POSIX API.  On Windows, we use the Windows API when
 223              building for MinGW, but the POSIX API when building
 224              for Cygwin.])
 225 fi
 226
 227 if test "${srv_linux_usrregs}" = "yes"; then
 228   AC_DEFINE(HAVE_LINUX_USRREGS, 1,
 229             [Define if the target supports PTRACE_PEEKUSR for register ]
 230             [access.])
 231 fi
 232
 233 if test "${srv_linux_regsets}" = "yes"; then
 234   AC_DEFINE(HAVE_LINUX_REGSETS, 1,
 235             [Define if the target supports register sets.])
 236
 237   AC_MSG_CHECKING(for PTRACE_GETREGS)
 238   AC_CACHE_VAL(gdbsrv_cv_have_ptrace_getregs,
 239   [AC_TRY_COMPILE([#include <sys/ptrace.h>],
 240                   [PTRACE_GETREGS;],
 241                   [gdbsrv_cv_have_ptrace_getregs=yes],
 242                   [gdbsrv_cv_have_ptrace_getregs=no])])
 243   AC_MSG_RESULT($gdbsrv_cv_have_ptrace_getregs)
 244   if test "${gdbsrv_cv_have_ptrace_getregs}" = "yes"; then
 245     AC_DEFINE(HAVE_PTRACE_GETREGS, 1,
 246               [Define if the target supports PTRACE_GETREGS for register ]
 247               [access.])
 248   fi
 249
 250   AC_MSG_CHECKING(for PTRACE_GETFPXREGS)
 251   AC_CACHE_VAL(gdbsrv_cv_have_ptrace_getfpxregs,
 252   [AC_TRY_COMPILE([#include <sys/ptrace.h>],
 253                   [PTRACE_GETFPXREGS;],
 254                   [gdbsrv_cv_have_ptrace_getfpxregs=yes],
 255                   [gdbsrv_cv_have_ptrace_getfpxregs=no])])
 256   AC_MSG_RESULT($gdbsrv_cv_have_ptrace_getfpxregs)
 257   if test "${gdbsrv_cv_have_ptrace_getfpxregs}" = "yes"; then
 258     AC_DEFINE(HAVE_PTRACE_GETFPXREGS, 1,
 259               [Define if the target supports PTRACE_GETFPXREGS for extended ]
 260               [register access.])
 261   fi
 262 fi
 263
 264 if test "$ac_cv_header_sys_procfs_h" = yes; then
 265   BFD_HAVE_SYS_PROCFS_TYPE(lwpid_t)
 266   BFD_HAVE_SYS_PROCFS_TYPE(psaddr_t)
 267   BFD_HAVE_SYS_PROCFS_TYPE(prgregset_t)
 268   BFD_HAVE_SYS_PROCFS_TYPE(elf_fpregset_t)
 269 fi
 270
 271 dnl Check for libdl, but do not add it to LIBS as only gdbserver
 272 dnl needs it (and gdbreplay doesn't).
 273 old_LIBS="$LIBS"
 274 AC_CHECK_LIB(dl, dlopen)
 275 LIBS="$old_LIBS"
 276
 277 srv_thread_depfiles=
 278 srv_libs=
 279 USE_THREAD_DB=
 280
 281 if test "$srv_linux_thread_db" = "yes"; then
 282   if test "$ac_cv_lib_dl_dlopen" = "yes"; then
 283     srv_libs="-ldl"
 284     AC_MSG_CHECKING(for the dynamic export flag)
 285     old_LDFLAGS="$LDFLAGS"
 286     # Older GNU ld supports --export-dynamic but --dynamic-list may not be
 287     # supported there.
 288     RDYNAMIC="-Wl,--dynamic-list=${srcdir}/proc-service.list"
 289     LDFLAGS="$LDFLAGS $RDYNAMIC"
 290     AC_TRY_LINK([], [],
 291                 [found="-Wl,--dynamic-list"
 292                  RDYNAMIC='-Wl,--dynamic-list=$(srcdir)/proc-service.list'],
 293                 [RDYNAMIC="-rdynamic"
 294                  LDFLAGS="$old_LDFLAGS $RDYNAMIC"
 295                  AC_TRY_LINK([], [],
 296                              [found="-rdynamic"],
 297                              [found="no"
 298                               RDYNAMIC=""])])
 299     AC_SUBST(RDYNAMIC)
 300     LDFLAGS="$old_LDFLAGS"
 301     AC_MSG_RESULT($found)
 302   else
 303     srv_libs="-lthread_db"
 304   fi
 305
 306   srv_thread_depfiles="thread-db.o proc-service.o"
 307   USE_THREAD_DB="-DUSE_THREAD_DB"
 308   AC_CACHE_CHECK([for TD_VERSION], gdbsrv_cv_have_td_version,
 309   [AC_TRY_COMPILE([#include <thread_db.h>], [TD_VERSION;],
 310                   [gdbsrv_cv_have_td_version=yes],
 311                   [gdbsrv_cv_have_td_version=no])])
 312   if test $gdbsrv_cv_have_td_version = yes; then
 313     AC_DEFINE(HAVE_TD_VERSION, 1, [Define if TD_VERSION is available.])
 314   fi
 315 fi
 316
 317 AC_ARG_WITH(libthread-db,
 318 AS_HELP_STRING([--with-libthread-db=PATH], [use given libthread_db directly]),
 319 [srv_libthread_db_path="${withval}"
 320   srv_libs="$srv_libthread_db_path"
 321 ])
 322
 323 if test "$srv_libs" != "" -a "$srv_libs" != "-ldl"; then
 324   AC_DEFINE(USE_LIBTHREAD_DB_DIRECTLY, 1, [Define if we should use libthread_db directly.])
 325 fi
 326
 327 if test "$srv_xmlfiles" != ""; then
 328   srv_xmlbuiltin="xml-builtin.o"
 329   AC_DEFINE(USE_XML, 1, [Define if an XML target description is available.])
 330
 331   tmp_xmlfiles=$srv_xmlfiles
 332   srv_xmlfiles=""
 333   for f in $tmp_xmlfiles; do
 334     srv_xmlfiles="$srv_xmlfiles \$(XML_DIR)/$f"
 335   done
 336 fi
 337
 338 GDBSERVER_DEPFILES="$srv_regobj $srv_tgtobj $srv_hostio_err_objs $srv_thread_depfiles"
 339 GDBSERVER_LIBS="$srv_libs"
 340
 341 dnl Check whether the target supports __sync_*_compare_and_swap.
 342 AC_CACHE_CHECK([whether the target supports __sync_*_compare_and_swap],
 343                 gdbsrv_cv_have_sync_builtins, [
 344 AC_TRY_LINK([], [int foo, bar; bar = __sync_val_compare_and_swap(&foo, 0, 1);],
 345                 gdbsrv_cv_have_sync_builtins=yes,
 346                 gdbsrv_cv_have_sync_builtins=no)])
 347 if test $gdbsrv_cv_have_sync_builtins = yes; then
 348   AC_DEFINE(HAVE_SYNC_BUILTINS, 1,
 349     [Define to 1 if the target supports __sync_*_compare_and_swap])
 350 fi
 351
 352 dnl Check for -fvisibility=hidden support in the compiler.
 353 saved_cflags="$CFLAGS"
 354 CFLAGS="$CFLAGS -fvisibility=hidden"
 355 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
 356                         [gdbsrv_cv_have_visibility_hidden=yes],
 357                         [gdbsrv_cv_have_visibility_hidden=no])
 358 CFLAGS="$saved_cflags"
 359
 360
 361 IPA_DEPFILES=""
 362 extra_libraries=""
 363
 364 # check whether to enable the inprocess agent
 365 if test "$ipa_obj" != "" \
 366    -a "$gdbsrv_cv_have_sync_builtins" = yes \
 367    -a "$gdbsrv_cv_have_visibility_hidden" = yes; then
 368    have_ipa=true
 369 else
 370    have_ipa=false
 371 fi
 372
 373 AC_ARG_ENABLE(inprocess-agent,
 374 AS_HELP_STRING([--enable-inprocess-agent], [inprocess agent]),
 375 [case "$enableval" in
 376   yes) want_ipa=true ;;
 377   no) want_ipa=false ;;
 378   *) AC_MSG_ERROR([bad value $enableval for inprocess-agent]) ;;
 379 esac],
 380 [want_ipa=$have_ipa])
 381
 382 if $want_ipa ; then
 383    if $have_ipa ; then
 384      IPA_DEPFILES="$ipa_obj"
 385      extra_libraries="$extra_libraries libinproctrace.so"
 386    else
 387      AC_MSG_ERROR([inprocess agent not supported for this target])
 388    fi
 389 fi
 390
 391 AC_SUBST(GDBSERVER_DEPFILES)
 392 AC_SUBST(GDBSERVER_LIBS)
 393 AC_SUBST(USE_THREAD_DB)
 394 AC_SUBST(srv_xmlbuiltin)
 395 AC_SUBST(srv_xmlfiles)
 396 AC_SUBST(IPA_DEPFILES)
 397 AC_SUBST(extra_libraries)
 398
 399 AC_OUTPUT(Makefile,
 400 [case x$CONFIG_HEADERS in
 401 xconfig.h:config.in)
 402 echo > stamp-h ;;
 403 esac
 404 ])