* Makefile.in (INTERNAL_LDFLAGS): Add in flags from configure.

	* configure configure.in:  Only make sol-thread.o for native.
	Also, switch to dlopened libthread_db.so.1.
	* sol-thread.c:  Switch to using dlopen to get the thread_db
	library.

3 files changed, 199 insertions, 126 deletions

diff --git a/gdb/configure b/gdb/configure
index a2ddc58..a9093b5 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -1,8 +1,8 @@
 #! /bin/sh
 
 # Guess values for system-dependent variables and create Makefiles.
-# Generated automatically using autoconf version 2.10 
-# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
+# Generated automatically using autoconf version 2.8 
+# Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
 #
 # This configure script is free software; the Free Software Foundation
 # gives unlimited permission to copy, distribute and modify it.
@@ -348,7 +348,7 @@ EOF
     verbose=yes ;;
 
   -version | --version | --versio | --versi | --vers)
-    echo "configure generated by autoconf version 2.10"
+    echo "configure generated by autoconf version 2.8"
     exit 0 ;;
 
   -with-* | --with-*)
@@ -1441,8 +1441,6 @@ else
     which can conflict with char $ac_func(); below.  */
 #include <assert.h>
 /* Override any gcc2 internal prototype to avoid an error.  */
-/* We use char because int might match the return type of a gcc2
-    builtin and then its argument prototype would still apply.  */
 char $ac_func();
 
 int main() { return 0; }
@@ -1459,7 +1457,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1463: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1461: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1487,7 +1485,7 @@ if eval "test \"`echo '$''{'gdb_cv_have_gregset_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1491 "configure"
+#line 1489 "configure"
 #include "confdefs.h"
 #include <sys/procfs.h>
 int main() { return 0; }
@@ -1495,7 +1493,7 @@ int t() {
 gregset_t *gregsetp = 0
 ; return 0; }
 EOF
-if { (eval echo configure:1499: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1497: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   gdb_cv_have_gregset_t=yes
 else
@@ -1519,7 +1517,7 @@ if eval "test \"`echo '$''{'gdb_cv_have_fpregset_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1523 "configure"
+#line 1521 "configure"
 #include "confdefs.h"
 #include <sys/procfs.h>
 int main() { return 0; }
@@ -1527,7 +1525,7 @@ int t() {
 fpregset_t *fpregsetp = 0
 ; return 0; }
 EOF
-if { (eval echo configure:1531: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1529: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   gdb_cv_have_fpregset_t=yes
 else
@@ -1552,7 +1550,7 @@ if eval "test \"`echo '$''{'ac_cv_c_long_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1556 "configure"
+#line 1554 "configure"
 #include "confdefs.h"
 
 int main() { return 0; }
@@ -1560,7 +1558,7 @@ int t() {
 long double foo;
 ; return 0; }
 EOF
-if { (eval echo configure:1564: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1562: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_long_double=yes
 else
@@ -1588,7 +1586,7 @@ else
   gdb_cv_printf_has_long_double=no
 else
 cat > conftest.$ac_ext <<EOF
-#line 1592 "configure"
+#line 1590 "configure"
 #include "confdefs.h"
 
 int main () {
@@ -1598,7 +1596,7 @@ int main () {
   return (strncmp ("3.14159", buf, 7));
 }
 EOF
-{ (eval echo configure:1602: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
+{ (eval echo configure:1600: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
 if test -s conftest && (./conftest; exit) 2>/dev/null; then
   gdb_cv_printf_has_long_double=yes
 else
@@ -1623,14 +1621,12 @@ if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1627 "configure"
+#line 1625 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
 #include <assert.h>
 /* Override any gcc2 internal prototype to avoid an error.  */
-/* We use char because int might match the return type of a gcc2
-    builtin and then its argument prototype would still apply.  */
 char $ac_func();
 
 int main() { return 0; }
@@ -1647,7 +1643,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1651: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1647: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1677,7 +1673,7 @@ else
   ac_cv_func_mmap=no
 else
 cat > conftest.$ac_ext <<EOF
-#line 1681 "configure"
+#line 1677 "configure"
 #include "confdefs.h"
 
 /* Thanks to Mike Haertel and Jim Avera for this test. */
@@ -1746,7 +1742,7 @@ main()
 }
 
 EOF
-{ (eval echo configure:1750: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
+{ (eval echo configure:1746: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
 if test -s conftest && (./conftest; exit) 2>/dev/null; then
   ac_cv_func_mmap=yes
 else
@@ -1766,20 +1762,23 @@ fi
 
 
 
-echo $ac_n "checking for Solaris thread debugging library""... $ac_c" 1>&6
-if test -f /usr/lib/libthread_db.so.1 ; then
-	echo "$ac_t""yes" 1>&6
-	LIBS="$LIBS /usr/lib/libthread_db.so.1"
-	THREAD_DB_OBS=sol-thread.o
-	cat >> confdefs.h <<\EOF
+if test ${host} = ${target} ; then
+	echo $ac_n "checking for Solaris thread debugging library""... $ac_c" 1>&6
+	if test -f /usr/lib/libthread_db.so.1 ; then
+		echo "$ac_t""yes" 1>&6
+		THREAD_DB_OBS=sol-thread.o
+		cat >> confdefs.h <<\EOF
 #define HAVE_THREAD_DB_LIB 1
 EOF
 
-else
-	echo "$ac_t""no" 1>&6
+		CONFIG_LDFLAGS="${CONFIG_LDFLAGS} -Xlinker -export-dynamic"
+	else
+		echo "$ac_t""no" 1>&6
+	fi
+	
+	
 fi
 
-
 ENABLE_CFLAGS=
 ENABLE_CLIBS=
 ENABLE_OBS=
@@ -1929,12 +1928,12 @@ if test "$ac_x_includes" = NO; then
 
   # First, try using that file with no special directory specified.
 cat > conftest.$ac_ext <<EOF
-#line 1933 "configure"
+#line 1932 "configure"
 #include "confdefs.h"
 #include <$x_direct_test_include>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1938: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1937: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2001,7 +2000,7 @@ if test "$ac_x_libraries" = NO; then
   ac_save_LIBS="$LIBS"
   LIBS="-l$x_direct_test_library $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2005 "configure"
+#line 2004 "configure"
 #include "confdefs.h"
 
 int main() { return 0; }
@@ -2009,7 +2008,7 @@ int t() {
 ${x_direct_test_function}()
 ; return 0; }
 EOF
-if { (eval echo configure:2013: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2012: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   LIBS="$ac_save_LIBS"
 # We can link X programs with no special library path.
@@ -2123,26 +2122,22 @@ else
   # libraries we check for below, so use a different variable.
   #  --interran@uluru.Stanford.EDU, kb@cs.umb.edu.
   echo $ac_n "checking for -lICE""... $ac_c" 1>&6
-ac_lib_var=`echo ICE'_'IceConnectionNumber | tr './+\055' '__p_'`
+ac_lib_var=`echo ICE_IceConnectionNumber | tr '.-/+' '___p'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-lICE  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2134 "configure"
+#line 2133 "configure"
 #include "confdefs.h"
-/* Override any gcc2 internal prototype to avoid an error.  */
-/* We use char because int might match the return type of a gcc2
-    builtin and then its argument prototype would still apply.  */
-char IceConnectionNumber();
 
 int main() { return 0; }
 int t() {
 IceConnectionNumber()
 ; return 0; }
 EOF
-if { (eval echo configure:2146: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2141: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2171,26 +2166,22 @@ fi
     # libraries were built with DECnet support.  And karl@cs.umb.edu says
     # the Alpha needs dnet_stub (dnet does not exist).
     echo $ac_n "checking for -ldnet""... $ac_c" 1>&6
-ac_lib_var=`echo dnet'_'dnet_ntoa | tr './+\055' '__p_'`
+ac_lib_var=`echo dnet_dnet_ntoa | tr '.-/+' '___p'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-ldnet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2182 "configure"
+#line 2177 "configure"
 #include "confdefs.h"
-/* Override any gcc2 internal prototype to avoid an error.  */
-/* We use char because int might match the return type of a gcc2
-    builtin and then its argument prototype would still apply.  */
-char dnet_ntoa();
 
 int main() { return 0; }
 int t() {
 dnet_ntoa()
 ; return 0; }
 EOF
-if { (eval echo configure:2194: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2185: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2210,26 +2201,22 @@ fi
 
     if test $ac_cv_lib_dnet_dnet_ntoa = no; then
       echo $ac_n "checking for -ldnet_stub""... $ac_c" 1>&6
-ac_lib_var=`echo dnet_stub'_'dnet_ntoa | tr './+\055' '__p_'`
+ac_lib_var=`echo dnet_stub_dnet_ntoa | tr '.-/+' '___p'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-ldnet_stub  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2221 "configure"
+#line 2212 "configure"
 #include "confdefs.h"
-/* Override any gcc2 internal prototype to avoid an error.  */
-/* We use char because int might match the return type of a gcc2
-    builtin and then its argument prototype would still apply.  */
-char dnet_ntoa();
 
 int main() { return 0; }
 int t() {
 dnet_ntoa()
 ; return 0; }
 EOF
-if { (eval echo configure:2233: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2220: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2254,26 +2241,22 @@ fi
     # Not sure which flavor of 386 UNIX this is, but it seems harmless to
     # check for it.
     echo $ac_n "checking for -lnsl""... $ac_c" 1>&6
-ac_lib_var=`echo nsl'_'t_accept | tr './+\055' '__p_'`
+ac_lib_var=`echo nsl_t_accept | tr '.-/+' '___p'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-lnsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2265 "configure"
+#line 2252 "configure"
 #include "confdefs.h"
-/* Override any gcc2 internal prototype to avoid an error.  */
-/* We use char because int might match the return type of a gcc2
-    builtin and then its argument prototype would still apply.  */
-char t_accept();
 
 int main() { return 0; }
 int t() {
 t_accept()
 ; return 0; }
 EOF
-if { (eval echo configure:2277: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2260: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2297,26 +2280,22 @@ fi
     # But -lsocket is broken on IRIX, according to simon@lia.di.epfl.ch.
     if test "`(uname) 2>/dev/null`" != IRIX; then
       echo $ac_n "checking for -lsocket""... $ac_c" 1>&6
-ac_lib_var=`echo socket'_'socket | tr './+\055' '__p_'`
+ac_lib_var=`echo socket_socket | tr '.-/+' '___p'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2308 "configure"
+#line 2291 "configure"
 #include "confdefs.h"
-/* Override any gcc2 internal prototype to avoid an error.  */
-/* We use char because int might match the return type of a gcc2
-    builtin and then its argument prototype would still apply.  */
-char socket();
 
 int main() { return 0; }
 int t() {
 socket()
 ; return 0; }
 EOF
-if { (eval echo configure:2320: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2299: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2413,12 +2392,12 @@ if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2417 "configure"
+#line 2396 "configure"
 #include "confdefs.h"
 #include <tclInt.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2422: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2401: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2471,7 +2450,7 @@ if test "$cross_compiling" = yes; then
 
 else
 cat > conftest.$ac_ext <<EOF
-#line 2475 "configure"
+#line 2454 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -2486,7 +2465,7 @@ main() {
 	return 0;
 }
 EOF
-{ (eval echo configure:2490: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
+{ (eval echo configure:2469: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
 if test -s conftest && (./conftest; exit) 2>/dev/null; then
   tclmajor=`cat tclmajor`
 	tclminor=`cat tclminor`
@@ -2631,13 +2610,13 @@ else
   ac_cv_c_tclib="-l$installedtcllibroot"
 else
 cat > conftest.$ac_ext <<EOF
-#line 2635 "configure"
+#line 2614 "configure"
 #include "confdefs.h"
 
     Tcl_AppInit()
     { exit(0); }
 EOF
-{ (eval echo configure:2641: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
+{ (eval echo configure:2620: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
 if test -s conftest && (./conftest; exit) 2>/dev/null; then
   ac_cv_c_tcllib="-l$installedtcllibroot"
 else
@@ -2747,12 +2726,12 @@ if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2751 "configure"
+#line 2730 "configure"
 #include "confdefs.h"
 #include <tk.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2756: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2735: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2812,7 +2791,7 @@ if test "$cross_compiling" = yes; then
 
 else
 cat > conftest.$ac_ext <<EOF
-#line 2816 "configure"
+#line 2795 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -2827,7 +2806,7 @@ cat > conftest.$ac_ext <<EOF
 	return 0;
 }
 EOF
-{ (eval echo configure:2831: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
+{ (eval echo configure:2810: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
 if test -s conftest && (./conftest; exit) 2>/dev/null; then
   tkmajor=`cat tkmajor`
 	tkminor=`cat tkminor`
@@ -2993,13 +2972,13 @@ else
   ac_cv_c_tklib="-l$installedtklibroot"
 else
 cat > conftest.$ac_ext <<EOF
-#line 2997 "configure"
+#line 2976 "configure"
 #include "confdefs.h"
 
        Tcl_AppInit()
        { exit(0); }
 EOF
-{ (eval echo configure:3003: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
+{ (eval echo configure:2982: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
 if test -s conftest && (./conftest; exit) 2>/dev/null; then
   ac_cv_c_tklib="-l$installedtklibroot"
 else
@@ -3033,14 +3012,14 @@ fi
     # beyond us.
     if test $tclmajor -ge 7 -a $tclminor -ge 5 ; then
        echo $ac_n "checking for -ldl""... $ac_c" 1>&6
-ac_lib_var=`echo dl'_'main | tr './+\055' '__p_'`
+ac_lib_var=`echo dl_main | tr '.-/+' '___p'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-ldl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3044 "configure"
+#line 3023 "configure"
 #include "confdefs.h"
 
 int main() { return 0; }
@@ -3048,7 +3027,7 @@ int t() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:3052: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:3031: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -3071,14 +3050,14 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for -ldld""... $ac_c" 1>&6
-ac_lib_var=`echo dld'_'main | tr './+\055' '__p_'`
+ac_lib_var=`echo dld_main | tr '.-/+' '___p'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-ldld  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3082 "configure"
+#line 3061 "configure"
 #include "confdefs.h"
 
 int main() { return 0; }
@@ -3086,7 +3065,7 @@ int t() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:3090: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:3069: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -3727,7 +3706,7 @@ do
     echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion"
     exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;;
   -version | --version | --versio | --versi | --vers | --ver | --ve | --v)
-    echo "$CONFIG_STATUS generated by autoconf version 2.10"
+    echo "$CONFIG_STATUS generated by autoconf version 2.8"
     exit 0 ;;
   -help | --help | --hel | --he | --h)
     echo "\$ac_cs_usage"; exit 0 ;;
@@ -3792,6 +3771,7 @@ s%@target_cpu@%$target_cpu%g
 s%@target_vendor@%$target_vendor%g
 s%@target_os@%$target_os%g
 s%@THREAD_DB_OBS@%$THREAD_DB_OBS%g
+s%@CONFIG_LDFLAGS@%$CONFIG_LDFLAGS%g
 s%@X_CFLAGS@%$X_CFLAGS%g
 s%@X_PRE_LIBS@%$X_PRE_LIBS%g
 s%@X_LIBS@%$X_LIBS%g
@@ -3916,7 +3896,7 @@ rm -f conftest.vals
 cat > conftest.hdr <<\EOF
 s/[\\&%]/\\&/g
 s%[\\$`]%\\&%g
-s%#define \([A-Za-z_][A-Za-z0-9_]*\) *\(.*\)%${ac_dA}\1${ac_dB}\1${ac_dC}\2${ac_dD}%gp
+s%#define \([A-Za-z_][A-Za-z0-9_]*\) \(.*\)%${ac_dA}\1${ac_dB}\1${ac_dC}\2${ac_dD}%gp
 s%ac_d%ac_u%gp
 s%ac_u%ac_e%gp
 EOF
@@ -3964,12 +3944,6 @@ cat >> $CONFIG_STATUS <<\EOF
     echo "$ac_file is unchanged"
     rm -f conftest.h
   else
-    # Remove last slash and all that follows it.  Not all systems have dirname.
-      ac_dir=`echo $ac_file|sed 's%/[^/][^/]*$%%'`
-      if test "$ac_dir" != "$ac_file" && test "$ac_dir" != .; then
-      # The file is in a subdirectory.
-      test ! -d "$ac_dir" && mkdir "$ac_dir"
-    fi
     rm -f $ac_file
     mv conftest.h $ac_file
   fi
diff --git a/gdb/configure.in b/gdb/configure.in
index 001beb3..7b549ce 100644
--- a/gdb/configure.in
+++ b/gdb/configure.in
@@ -96,20 +96,23 @@ AC_MSG_RESULT($gdb_cv_printf_has_long_double)
 
 AC_FUNC_MMAP
 
-dnl See if thread_db is around for Solaris thread debugging.  Note that we must
-dnl explicitly test for version 1 of the library because version 0 (present on
-dnl Solaris 2.4 or earlier) doesn't have the same API.
-
-AC_MSG_CHECKING(for Solaris thread debugging library)
-if test -f /usr/lib/libthread_db.so.1 ; then
-	AC_MSG_RESULT(yes)
-	LIBS="$LIBS /usr/lib/libthread_db.so.1"
-	THREAD_DB_OBS=sol-thread.o
-	AC_DEFINE(HAVE_THREAD_DB_LIB)
-else
-	AC_MSG_RESULT(no)
+dnl See if thread_db library is around for Solaris thread debugging.  Note that
+dnl we must explicitly test for version 1 of the library because version 0
+dnl (present on Solaris 2.4 or earlier) doesn't have the same API.
+
+if test ${host} = ${target} ; then
+	AC_MSG_CHECKING(for Solaris thread debugging library)
+	if test -f /usr/lib/libthread_db.so.1 ; then
+		AC_MSG_RESULT(yes)
+		THREAD_DB_OBS=sol-thread.o
+		AC_DEFINE(HAVE_THREAD_DB_LIB)
+		CONFIG_LDFLAGS="${CONFIG_LDFLAGS} -Xlinker -export-dynamic"
+	else
+		AC_MSG_RESULT(no)
+	fi
+	AC_SUBST(THREAD_DB_OBS)
+	AC_SUBST(CONFIG_LDFLAGS)
 fi
-AC_SUBST(THREAD_DB_OBS)
 
 dnl Handle optional features that can be enabled.
 ENABLE_CFLAGS=
diff --git a/gdb/sol-thread.c b/gdb/sol-thread.c
index d107e22..00bdc60 100644
--- a/gdb/sol-thread.c
+++ b/gdb/sol-thread.c
@@ -66,6 +66,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 #include <fcntl.h>
 #include <unistd.h>
 #include <sys/stat.h>
+#include <dlfcn.h>
 
 extern struct target_ops sol_thread_ops; /* Forward declaration */
 
@@ -121,6 +122,56 @@ static int lwp_to_thread PARAMS ((int lwp));
 #define GET_THREAD(THREAD_ID) (((THREAD_ID) >> 16) & 0x7fff)
 #define BUILD_LWP(LWP_ID, PID) ((LWP_ID) << 16 | (PID))
 #define BUILD_THREAD(THREAD_ID, PID) (THREAD_FLAG | BUILD_LWP (THREAD_ID, PID))
+
+/* Pointers to routines from lithread_db resolved by dlopen() */
+
+static void
+  (*p_td_log) (const int on_off);
+static td_err_e
+  (*p_td_ta_new) (const struct ps_prochandle *ph_p, td_thragent_t **ta_pp);
+static td_err_e
+  (*p_td_ta_delete) (td_thragent_t *ta_p);
+static td_err_e
+  (*p_td_init) (void);
+static td_err_e
+  (*p_td_ta_get_ph) (const td_thragent_t *ta_p, struct ps_prochandle **ph_pp);
+static td_err_e
+  (*p_td_ta_get_nthreads) (const td_thragent_t *ta_p, int *nthread_p);
+static td_err_e
+  (*p_td_ta_tsd_iter) (const td_thragent_t *ta_p, td_key_iter_f *cb, void *cbdata_p);
+static td_err_e
+  (*p_td_ta_thr_iter) (const td_thragent_t *ta_p, td_thr_iter_f *cb, void *cbdata_p, td_thr_state_e state,
+		       int ti_pri, sigset_t *ti_sigmask_p, unsigned ti_user_flags);
+static td_err_e
+  (*p_td_thr_validate) (const td_thrhandle_t *th_p);
+static td_err_e
+  (*p_td_thr_tsd) (const td_thrhandle_t *th_p, const thread_key_t key, void **data_pp);
+static td_err_e
+  (*p_td_thr_get_info) (const td_thrhandle_t *th_p, td_thrinfo_t *ti_p);
+static td_err_e
+  (*p_td_thr_getfpregs) (const td_thrhandle_t *th_p, prfpregset_t *fpregset);
+static td_err_e
+  (*p_td_thr_getxregsize) (const td_thrhandle_t *th_p, int *xregsize);
+static td_err_e
+  (*p_td_thr_getxregs) (const td_thrhandle_t *th_p, const caddr_t xregset);
+static td_err_e
+  (*p_td_thr_sigsetmask) (const td_thrhandle_t *th_p, const sigset_t ti_sigmask);
+static td_err_e
+  (*p_td_thr_setprio) (const td_thrhandle_t *th_p, const int ti_pri);
+static td_err_e
+  (*p_td_thr_setsigpending) (const td_thrhandle_t *th_p, const uchar_t ti_pending_flag, const sigset_t ti_pending);
+static td_err_e
+  (*p_td_thr_setfpregs) (const td_thrhandle_t *th_p, const prfpregset_t *fpregset);
+static td_err_e
+  (*p_td_thr_setxregs) (const td_thrhandle_t *th_p, const caddr_t xregset);
+static td_err_e
+  (*p_td_ta_map_id2thr) (const td_thragent_t *ta_p, thread_t tid, td_thrhandle_t *th_p);
+static td_err_e
+  (*p_td_ta_map_lwp2thr) (const td_thragent_t *ta_p, lwpid_t lwpid, td_thrhandle_t *th_p);
+static td_err_e
+  (*p_td_thr_getgregs) (const td_thrhandle_t *th_p, prgregset_t regset);
+static td_err_e
+  (*p_td_thr_setgregs) (const td_thrhandle_t *th_p, const prgregset_t regset);
 
 /*
 
@@ -266,11 +317,11 @@ thread_to_lwp (thread_id, default_lwp)
   pid = PIDGET (thread_id);
   thread_id = GET_THREAD(thread_id);
 
-  val = td_ta_map_id2thr (main_ta, thread_id, &th);
+  val = p_td_ta_map_id2thr (main_ta, thread_id, &th);
   if (val != TD_OK)
     error ("thread_to_lwp: td_ta_map_id2thr %s", td_err_string (val));
 
-  val = td_thr_get_info (&th, &ti);
+  val = p_td_thr_get_info (&th, &ti);
 
   if (val != TD_OK)
     error ("thread_to_lwp: td_thr_get_info: %s", td_err_string (val));
@@ -327,11 +378,11 @@ lwp_to_thread (lwp)
   pid = PIDGET (lwp);
   lwp = GET_LWP (lwp);
 
-  val = td_ta_map_lwp2thr (main_ta, lwp, &th);
+  val = p_td_ta_map_lwp2thr (main_ta, lwp, &th);
   if (val != TD_OK)
     error ("lwp_to_thread: td_thr_get_info: %s.", td_err_string (val));
 
-  val = td_thr_get_info (&th, &ti);
+  val = p_td_thr_get_info (&th, &ti);
 
   if (val != TD_OK)
     error ("lwp_to_thread: td_thr_get_info: %s.", td_err_string (val));
@@ -518,14 +569,14 @@ sol_thread_fetch_registers (regno)
   if (thread == 0)
     error ("sol_thread_fetch_registers:  thread == 0");
 
-  val = td_ta_map_id2thr (main_ta, thread, &thandle);
+  val = p_td_ta_map_id2thr (main_ta, thread, &thandle);
   if (val != TD_OK)
     error ("sol_thread_fetch_registers: td_ta_map_id2thr: %s",
 	   td_err_string (val));
 
   /* Get the integer regs */
 
-  val = td_thr_getgregs (&thandle, gregset);
+  val = p_td_thr_getgregs (&thandle, gregset);
   if (val != TD_OK
       && val != TD_PARTIALREG)
     error ("sol_thread_fetch_registers: td_thr_getgregs %s",
@@ -536,7 +587,7 @@ sol_thread_fetch_registers (regno)
 
   /* And, now the fp regs */
 
-  val = td_thr_getfpregs (&thandle, &fpregset);
+  val = p_td_thr_getfpregs (&thandle, &fpregset);
   if (val != TD_OK
       && val != TD_NOFPREGS)
     error ("sol_thread_fetch_registers: td_thr_getfpregs %s",
@@ -585,18 +636,18 @@ sol_thread_store_registers (regno)
 
   thread = GET_THREAD (inferior_pid);
 
-  val = td_ta_map_id2thr (main_ta, thread, &thandle);
+  val = p_td_ta_map_id2thr (main_ta, thread, &thandle);
   if (val != TD_OK)
     error ("sol_thread_store_registers: td_ta_map_id2thr %s",
 	   td_err_string (val));
 
   if (regno != -1)
     {				/* Not writing all the regs */
-      val = td_thr_getgregs (&thandle, regset);
+      val = p_td_thr_getgregs (&thandle, regset);
       if (val != TD_OK)
 	error ("sol_thread_store_registers: td_thr_getgregs %s",
 	       td_err_string (val));
-      val = td_thr_getfpregs (&thandle, &fpregset);
+      val = p_td_thr_getfpregs (&thandle, &fpregset);
       if (val != TD_OK)
 	error ("sol_thread_store_registers: td_thr_getfpregs %s",
 	       td_err_string (val));
@@ -622,11 +673,11 @@ sol_thread_store_registers (regno)
   fill_gregset (regset, regno);
   fill_fpregset (fpregset, regno);
 
-  val = td_thr_setgregs (&thandle, regset);
+  val = p_td_thr_setgregs (&thandle, regset);
   if (val != TD_OK)
     error ("sol_thread_store_registers: td_thr_setgregs %s",
 	   td_err_string (val));
-  val = td_thr_setfpregs (&thandle, &fpregset);
+  val = p_td_thr_setfpregs (&thandle, &fpregset);
   if (val != TD_OK)
     error ("sol_thread_store_registers: td_thr_setfpregs %s",
 	   td_err_string (val));
@@ -747,11 +798,11 @@ sol_thread_new_objfile (objfile)
      the shared libraries are located because it needs information from the
      user's thread library.  */
 
-  val = td_init ();
+  val = p_td_init ();
   if (val != TD_OK)
     error ("target_new_objfile: td_init: %s", td_err_string (val));
 
-  val = td_ta_new (&main_ph, &main_ta);
+  val = p_td_ta_new (&main_ph, &main_ta);
   if (val == TD_NOLIBTHREAD)
     return;
   else if (val != TD_OK)
@@ -1095,15 +1146,15 @@ struct target_ops sol_thread_ops = {
   "Solaris threads and pthread support.", /* to_doc */
   sol_thread_open,		/* to_open */
   0,				/* to_close */
-  sol_thread_attach,			/* to_attach */
+  sol_thread_attach,		/* to_attach */
   sol_thread_detach, 		/* to_detach */
-  sol_thread_resume,			/* to_resume */
-  sol_thread_wait,			/* to_wait */
+  sol_thread_resume,		/* to_resume */
+  sol_thread_wait,		/* to_wait */
   sol_thread_fetch_registers,	/* to_fetch_registers */
   sol_thread_store_registers,	/* to_store_registers */
   sol_thread_prepare_to_store,	/* to_prepare_to_store */
-  sol_thread_xfer_memory,		/* to_xfer_memory */
-  sol_thread_files_info,		/* to_files_info */
+  sol_thread_xfer_memory,	/* to_xfer_memory */
+  sol_thread_files_info,	/* to_files_info */
   memory_insert_breakpoint,	/* to_insert_breakpoint */
   memory_remove_breakpoint,	/* to_remove_breakpoint */
   terminal_init_inferior,	/* to_terminal_init */
@@ -1135,7 +1186,52 @@ struct target_ops sol_thread_ops = {
 void
 _initialize_sol_thread ()
 {
+  void *dlhandle;
+
+  dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW);
+  if (!dlhandle)
+    goto die;
+
+#define resolve(X) \
+  if (!(p_##X = dlsym (dlhandle, #X))) \
+    goto die;
+
+  resolve (td_log);
+  resolve (td_ta_new);
+  resolve (td_ta_delete);
+  resolve (td_init);
+  resolve (td_ta_get_ph);
+  resolve (td_ta_get_nthreads);
+  resolve (td_ta_tsd_iter);
+  resolve (td_ta_thr_iter);
+  resolve (td_thr_validate);
+  resolve (td_thr_tsd);
+  resolve (td_thr_get_info);
+  resolve (td_thr_getfpregs);
+  resolve (td_thr_getxregsize);
+  resolve (td_thr_getxregs);
+  resolve (td_thr_sigsetmask);
+  resolve (td_thr_setprio);
+  resolve (td_thr_setsigpending);
+  resolve (td_thr_setfpregs);
+  resolve (td_thr_setxregs);
+  resolve (td_ta_map_id2thr);
+  resolve (td_ta_map_lwp2thr);
+  resolve (td_thr_getgregs);
+  resolve (td_thr_setgregs);
+
   add_target (&sol_thread_ops);
 
   procfs_suppress_run = 1;
+
+  return;
+
+ die:
+
+  fprintf_unfiltered (gdb_stderr, "[GDB will not be able to debug user-mode threads: %s]\n", dlerror ());
+
+  if (dlhandle)
+    dlclose (dlhandle);
+
+  return;
 }