* win32-i386-low.c: Add 64-bit support.

[deliverable/binutils-gdb.git] / gdb / gdbserver / configure.ac

diff --git a/gdb/gdbserver/configure.ac b/gdb/gdbserver/configure.ac
index a631c7eb0fa396e1d7a548c0914e83d07b2539f2..a2dfa372546dfa25dffedd20162d863781108689 100644 (file)
--- a/gdb/gdbserver/configure.ac
+++ b/gdb/gdbserver/configure.ac
@@ -1,6 +1,6 @@
 dnl Autoconf configure script for GDB server.
-dnl Copyright (C) 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008
-dnl Free Software Foundation, Inc.
+dnl Copyright (C) 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
+dnl 2010 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GDB.
 dnl
@@ -45,6 +45,15 @@ AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
 AC_CHECK_FUNCS(pread pwrite pread64)
 AC_REPLACE_FUNCS(memmem)
 
+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="$old_LIBS"
+
 have_errno=no
 AC_MSG_CHECKING(for errno)
 AC_TRY_LINK([
@@ -73,12 +82,43 @@ ACX_BUGURL([http://www.gnu.org/software/gdb/bugs/])
 AC_DEFINE_UNQUOTED([PKGVERSION], ["$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 "${target}" in
+changequote(,)dnl
+  i[34567]86-*-linux*)
+changequote([,])dnl
+    AC_CACHE_CHECK([if building for x86-64], [gdb_cv_i386_is_x86_64],
+                  [save_CPPFLAGS="$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 $CFLAGS"
+                    AC_EGREP_CPP([got it], [
+#ifdef __mcoldfire__
+got it
+#endif
+                 ], [gdb_cv_m68k_is_coldfire=yes],
+                    [gdb_cv_m68k_is_coldfire=no])
+                    CPPFLAGS="$save_CPPFLAGS"])
+    ;;
+esac
+
 . ${srcdir}/configure.srv
 
 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="$LIBS -lsocket"
 fi
@@ -135,17 +175,27 @@ if test "$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 "$srv_linux_thread_db" = "yes"; then
-  srv_libs="-ldl"
-  old_LDFLAGS="$LDFLAGS"
-  LDFLAGS="$LDFLAGS -rdynamic"
-  AC_TRY_LINK([], [], [RDYNAMIC=-rdynamic], [RDYNAMIC=])
-  AC_SUBST(RDYNAMIC)
-  LDFLAGS="$old_LDFLAGS"
+  if test "$ac_cv_lib_dl_dlopen" = "yes"; then
+    srv_libs="-ldl"
+    old_LDFLAGS="$LDFLAGS"
+    LDFLAGS="$LDFLAGS -rdynamic"
+    AC_TRY_LINK([], [], [RDYNAMIC=-rdynamic], [RDYNAMIC=])
+    AC_SUBST(RDYNAMIC)
+    LDFLAGS="$old_LDFLAGS"
+  else
+    srv_libs="-lthread_db"
+  fi
 
   srv_thread_depfiles="thread-db.o proc-service.o"
   USE_THREAD_DB="-DUSE_THREAD_DB"
@@ -158,6 +208,16 @@ if test "$srv_linux_thread_db" = "yes"; then
   fi
 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_xmlfiles" != ""; then
   srv_xmlbuiltin="xml-builtin.o"
   AC_DEFINE(USE_XML, 1, [Define if an XML target description is available.])