2011-07-22 Kwok Cheung Yeung <kcy@codesourcery.com>
[deliverable/binutils-gdb.git] / gdb / gdbserver / configure.ac
index e24462b0132cdcef96cb989691b085d23681302e..567d3ea7e81e54897aad8d9c13639f085bb1c78a 100644 (file)
@@ -1,12 +1,12 @@
 dnl Autoconf configure script for GDB server.
-dnl Copyright (C) 2000, 2002, 2003, 2004, 2005, 2006
-dnl Free Software Foundation, Inc.
+dnl Copyright (C) 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
+dnl 2010, 2011 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GDB.
 dnl
 dnl This program is free software; you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
-dnl the Free Software Foundation; either version 2 of the License, or
+dnl the Free Software Foundation; either version 3 of the License, or
 dnl (at your option) any later version.
 dnl
 dnl This program is distributed in the hope that it will be useful,
@@ -15,9 +15,7 @@ dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 dnl GNU General Public License for more details.
 dnl
 dnl You should have received a copy of the GNU General Public License
-dnl along with this program; if not, write to the Free Software
-dnl Foundation, Inc., 51 Franklin Street, Fifth Floor,
-dnl Boston, MA 02110-1301, USA.
+dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 dnl Process this file with autoconf to produce a configure script.
 
@@ -25,8 +23,10 @@ AC_PREREQ(2.59)dnl
 
 AC_INIT(server.c)
 AC_CONFIG_HEADER(config.h:config.in)
+AC_CONFIG_LIBOBJ_DIR(../gnulib)
 
 AC_PROG_CC
+AC_GNU_SOURCE
 
 AC_CANONICAL_SYSTEM
 
@@ -35,13 +35,116 @@ AC_PROG_INSTALL
 AC_ARG_PROGRAM
 
 AC_HEADER_STDC
+AC_HEADER_DIRENT
 
+AC_FUNC_ALLOCA
 AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
                 proc_service.h sys/procfs.h thread_db.h linux/elf.h dnl
                 stdlib.h unistd.h dnl
-                errno.h fcntl.h signal.h sys/file.h malloc.h dnl
+                errno.h fcntl.h signal.h sys/file.h malloc.h dnl
                 sys/ioctl.h netinet/in.h sys/socket.h netdb.h dnl
                 netinet/tcp.h arpa/inet.h sys/wait.h)
+AC_CHECK_FUNCS(pread pwrite pread64)
+AC_REPLACE_FUNCS(memmem vasprintf vsnprintf)
+
+# Check for UST
+ustlibs=""
+ustinc=""
+
+AC_ARG_WITH(ust, [  --with-ust=PATH       Specify prefix directory for the installed UST package
+                          Equivalent to --with-ust-include=PATH/include
+                          plus --with-ust-lib=PATH/lib])
+AC_ARG_WITH(ust_include, [  --with-ust-include=PATH Specify directory for installed UST include files])
+AC_ARG_WITH(ust_lib, [  --with-ust-lib=PATH   Specify the directory for the installed UST library])
+
+case $with_ust in
+  no)
+    ustlibs=
+    ustinc=
+    ;;
+  "" | yes)
+    ustlibs=" -lust "
+    ustinc=""
+    ;;
+  *)
+    ustlibs="-L$with_ust/lib -lust"
+    ustinc="-I$with_ust/include "
+    ;;
+esac
+if test "x$with_ust_include" != x; then
+  ustinc="-I$with_ust_include "
+fi
+if test "x$with_ust_lib" != x; then
+  ustlibs="-L$with_ust_lib -lust"
+fi
+
+if test "x$with_ust" != "xno"; then
+  saved_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS $ustinc"
+  AC_MSG_CHECKING([for ust])
+  AC_TRY_COMPILE([
+#define CONFIG_UST_GDB_INTEGRATION
+#include <ust/ust.h>
+  ],[],
+  [AC_MSG_RESULT([yes]); AC_DEFINE(HAVE_UST, 1, [Define if UST is available])],
+  [AC_MSG_RESULT([no]); ustlibs= ; ustinc= ])
+  CFLAGS="$saved_CFLAGS"
+fi
+
+# Flags needed for UST
+AC_SUBST(ustlibs)
+AC_SUBST(ustinc)
+
+AC_ARG_ENABLE(werror,
+  AS_HELP_STRING([--enable-werror], [treat compile warnings as errors]),
+  [case "${enableval}" in
+     yes | y) ERROR_ON_WARNING="yes" ;;
+     no | n)  ERROR_ON_WARNING="no" ;;
+     *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;
+   esac])
+
+# Enable -Werror by default when using gcc
+if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
+    ERROR_ON_WARNING=yes
+fi
+
+WERROR_CFLAGS=""
+if test "${ERROR_ON_WARNING}" = yes ; then
+    WERROR_CFLAGS="-Werror"
+fi
+
+build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
+-Wformat-nonliteral -Wno-char-subscripts"
+
+WARN_CFLAGS=""
+if test "x$GCC" = xyes
+then
+    AC_MSG_CHECKING(compiler warning flags)
+    # Separate out the -Werror flag as some files just cannot be
+    # compiled with it enabled.
+    for w in ${build_warnings}; do
+       case $w in
+       -Werr*) WERROR_CFLAGS=-Werror ;;
+       *) # Check that GCC accepts it
+           saved_CFLAGS="$CFLAGS"
+           CFLAGS="$CFLAGS $w"
+           AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",)
+           CFLAGS="$saved_CFLAGS"
+       esac
+    done
+    AC_MSG_RESULT(${WARN_CFLAGS} ${WERROR_CFLAGS})
+fi
+AC_SUBST(WARN_CFLAGS)
+AC_SUBST(WERROR_CFLAGS)
+
+dnl dladdr is glibc-specific.  It is used by thread-db.c but only for
+dnl debugging messages.  It lives in -ldl which is handled below so we don't
+dnl use AC_CHECK_LIB (or AC_SEARCH_LIBS) here.  Instead we just temporarily
+dnl augment LIBS.
+old_LIBS="$LIBS"
+LIBS="$LIBS -ldl"
+AC_CHECK_FUNCS(dladdr)
+LIBS="$old_LIBS"
 
 have_errno=no
 AC_MSG_CHECKING(for errno)
@@ -59,27 +162,46 @@ AC_TRY_LINK([
   [AC_MSG_RESULT(no)])
 fi
 
-AC_CHECK_DECLS([strerror, perror])
+AC_CHECK_DECLS([strerror, perror, memmem, vasprintf, vsnprintf])
 
 AC_CHECK_TYPES(socklen_t, [], [],
 [#include <sys/types.h>
 #include <sys/socket.h>
 ])
 
+ACX_PKGVERSION([GDB])
+ACX_BUGURL([http://www.gnu.org/software/gdb/bugs/])
+AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
+AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
+
 # Check for various supplementary target information (beyond the
 # triplet) which might affect the choices in configure.srv.
 case "${target}" in
-  arm*-*-linux*)
-    AC_CACHE_CHECK([if iWMMXt is selected], [gdb_cv_arm_iwmmxt],
-                  [save_CPPFLAGS="$CPPFLAGS"
-                  CPPFLAGS="$CPPFLAGS $CFLAGS"
-                  AC_EGREP_CPP([got it], [
-#ifdef __IWMMXT__
+changequote(,)dnl
+  i[34567]86-*-linux*)
+changequote([,])dnl
+    AC_CACHE_CHECK([if building for x86-64], [gdb_cv_i386_is_x86_64],
+                  [save_CPPFLAGS="$CPPFLAGS"
+                    CPPFLAGS="$CPPFLAGS $CFLAGS"
+                    AC_EGREP_CPP([got it], [
+#if __x86_64__
+got it
+#endif
+                 ], [gdb_cv_i386_is_x86_64=yes],
+                    [gdb_cv_i386_is_x86_64=no])
+                    CPPFLAGS="$save_CPPFLAGS"])
+    ;;
+  m68k-*-*)
+    AC_CACHE_CHECK([if building for Coldfire], [gdb_cv_m68k_is_coldfire],
+                  [save_CPPFLAGS="$CPPFLAGS"
+                    CPPFLAGS="$CPPFLAGS $CFLAGS"
+                    AC_EGREP_CPP([got it], [
+#ifdef __mcoldfire__
 got it
 #endif
-                               ], [gdb_cv_arm_iwmmxt=yes],
-                               [gdb_cv_arm_iwmmxt=no])
-                  CPPFLAGS="$save_CPPFLAGS"])
+                 ], [gdb_cv_m68k_is_coldfire=yes],
+                    [gdb_cv_m68k_is_coldfire=no])
+                    CPPFLAGS="$save_CPPFLAGS"])
     ;;
 esac
 
@@ -88,7 +210,11 @@ esac
 if test "${srv_mingwce}" = "yes"; then
   LIBS="$LIBS -lws2"
 elif test "${srv_mingw}" = "yes"; then
-  LIBS="$LIBS -lwsock32"
+  LIBS="$LIBS -lws2_32"
+elif test "${srv_qnx}" = "yes"; then
+  LIBS="$LIBS -lsocket"
+elif test "${srv_lynxos}" = "yes"; then
+  LIBS="$LIBS -lnetinet"
 fi
 
 if test "${srv_mingw}" = "yes"; then
@@ -143,64 +269,133 @@ if test "$ac_cv_header_sys_procfs_h" = yes; then
   BFD_HAVE_SYS_PROCFS_TYPE(elf_fpregset_t)
 fi
 
+dnl Check for libdl, but do not add it to LIBS as only gdbserver
+dnl needs it (and gdbreplay doesn't).
+old_LIBS="$LIBS"
+AC_CHECK_LIB(dl, dlopen)
+LIBS="$old_LIBS"
+
 srv_thread_depfiles=
 srv_libs=
 USE_THREAD_DB=
 
 if test "$srv_linux_thread_db" = "yes"; then
-  SRV_CHECK_THREAD_DB
-  if test "$srv_cv_thread_db" = no; then
-    AC_WARN([Could not find libthread_db.])
-    AC_WARN([Disabling thread support in gdbserver.])
-    srv_linux_thread_db=no
+  if test "$ac_cv_lib_dl_dlopen" = "yes"; then
+    srv_libs="-ldl"
+    AC_MSG_CHECKING(for the dynamic export flag)
+    old_LDFLAGS="$LDFLAGS"
+    # Older GNU ld supports --export-dynamic but --dynamic-list may not be
+    # supported there.
+    RDYNAMIC="-Wl,--dynamic-list=${srcdir}/proc-service.list"
+    LDFLAGS="$LDFLAGS $RDYNAMIC"
+    AC_TRY_LINK([], [],
+               [found="-Wl,--dynamic-list"
+                RDYNAMIC='-Wl,--dynamic-list=$(srcdir)/proc-service.list'],
+               [RDYNAMIC="-rdynamic"
+                LDFLAGS="$old_LDFLAGS $RDYNAMIC"
+                AC_TRY_LINK([], [],
+                            [found="-rdynamic"],
+                            [found="no"
+                             RDYNAMIC=""])])
+    AC_SUBST(RDYNAMIC)
+    LDFLAGS="$old_LDFLAGS"
+    AC_MSG_RESULT($found)
   else
-    srv_libs="$srv_cv_thread_db"
-    SRV_CHECK_TLS_GET_ADDR
+    srv_libs="-lthread_db"
   fi
-  old_LDFLAGS="$LDFLAGS"
-  LDFLAGS="$LDFLAGS -rdynamic"
-  AC_TRY_LINK([], [], [RDYNAMIC=-rdynamic], [RDYNAMIC=])
-  AC_SUBST(RDYNAMIC)
-  LDFLAGS="$old_LDFLAGS"
-fi
 
-if test "$srv_linux_thread_db" = "yes"; then
   srv_thread_depfiles="thread-db.o proc-service.o"
   USE_THREAD_DB="-DUSE_THREAD_DB"
   AC_CACHE_CHECK([for TD_VERSION], gdbsrv_cv_have_td_version,
   [AC_TRY_COMPILE([#include <thread_db.h>], [TD_VERSION;],
-                  [gdbsrv_cv_have_td_version=yes],
-                  [gdbsrv_cv_have_td_version=no])])
+                 [gdbsrv_cv_have_td_version=yes],
+                 [gdbsrv_cv_have_td_version=no])])
   if test $gdbsrv_cv_have_td_version = yes; then
     AC_DEFINE(HAVE_TD_VERSION, 1, [Define if TD_VERSION is available.])
   fi
+fi
 
-  if test "$srv_cv_tls_get_addr" = yes; then
-    AC_DEFINE(HAVE_TD_THR_TLS_GET_ADDR, 1, [Define if td_thr_tls_get_addr is available.])
-  fi
+AC_ARG_WITH(libthread-db,
+AS_HELP_STRING([--with-libthread-db=PATH], [use given libthread_db directly]),
+[srv_libthread_db_path="${withval}"
+  srv_libs="$srv_libthread_db_path"
+])
+
+if test "$srv_libs" != "" -a "$srv_libs" != "-ldl"; then
+  AC_DEFINE(USE_LIBTHREAD_DB_DIRECTLY, 1, [Define if we should use libthread_db directly.])
 fi
 
-if test "$srv_xmltarget" != ""; then
-  srv_xmltarget="\$(XML_DIR)/$srv_xmltarget"
+if test "$srv_xmlfiles" != ""; then
   srv_xmlbuiltin="xml-builtin.o"
   AC_DEFINE(USE_XML, 1, [Define if an XML target description is available.])
 
   tmp_xmlfiles=$srv_xmlfiles
-  srv_xmlfiles="target.xml"
+  srv_xmlfiles=""
   for f in $tmp_xmlfiles; do
     srv_xmlfiles="$srv_xmlfiles \$(XML_DIR)/$f"
   done
 fi
 
-GDBSERVER_DEPFILES="$srv_regobj $srv_tgtobj $srv_thread_depfiles"
+GDBSERVER_DEPFILES="$srv_regobj $srv_tgtobj $srv_hostio_err_objs $srv_thread_depfiles"
 GDBSERVER_LIBS="$srv_libs"
 
+dnl Check whether the target supports __sync_*_compare_and_swap.
+AC_CACHE_CHECK([whether the target supports __sync_*_compare_and_swap],
+               gdbsrv_cv_have_sync_builtins, [
+AC_TRY_LINK([], [int foo, bar; bar = __sync_val_compare_and_swap(&foo, 0, 1);],
+               gdbsrv_cv_have_sync_builtins=yes,
+               gdbsrv_cv_have_sync_builtins=no)])
+if test $gdbsrv_cv_have_sync_builtins = yes; then
+  AC_DEFINE(HAVE_SYNC_BUILTINS, 1,
+    [Define to 1 if the target supports __sync_*_compare_and_swap])
+fi
+
+dnl Check for -fvisibility=hidden support in the compiler.
+saved_cflags="$CFLAGS"
+CFLAGS="$CFLAGS -fvisibility=hidden"
+AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
+                       [gdbsrv_cv_have_visibility_hidden=yes],
+                       [gdbsrv_cv_have_visibility_hidden=no])
+CFLAGS="$saved_cflags"
+
+
+IPA_DEPFILES=""
+extra_libraries=""
+
+# check whether to enable the inprocess agent
+if test "$ipa_obj" != "" \
+   -a "$gdbsrv_cv_have_sync_builtins" = yes \
+   -a "$gdbsrv_cv_have_visibility_hidden" = yes; then
+   have_ipa=true
+else
+   have_ipa=false
+fi
+
+AC_ARG_ENABLE(inprocess-agent,
+AS_HELP_STRING([--enable-inprocess-agent], [inprocess agent]),
+[case "$enableval" in
+  yes) want_ipa=true ;;
+  no) want_ipa=false ;;
+  *) AC_MSG_ERROR([bad value $enableval for inprocess-agent]) ;;
+esac],
+[want_ipa=$have_ipa])
+
+if $want_ipa ; then
+   if $have_ipa ; then
+     IPA_DEPFILES="$ipa_obj"
+     extra_libraries="$extra_libraries libinproctrace.so"
+   else
+     AC_MSG_ERROR([inprocess agent not supported for this target])
+   fi
+fi
+
 AC_SUBST(GDBSERVER_DEPFILES)
 AC_SUBST(GDBSERVER_LIBS)
 AC_SUBST(USE_THREAD_DB)
 AC_SUBST(srv_xmlbuiltin)
 AC_SUBST(srv_xmlfiles)
-AC_SUBST(srv_xmltarget)
+AC_SUBST(IPA_DEPFILES)
+AC_SUBST(extra_libraries)
 
 AC_OUTPUT(Makefile,
 [case x$CONFIG_HEADERS in
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