Index: configure
===================================================================
--- configure	(revision 146448)
+++ configure	(working copy)
@@ -1231,7 +1231,7 @@ esac
     else
       echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
     fi
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
@@ -2647,8 +2647,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -2706,8 +2705,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -2823,8 +2821,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -2878,8 +2875,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -2924,8 +2920,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -2969,8 +2964,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3618,8 +3612,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3789,8 +3782,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3854,8 +3846,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4019,8 +4010,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4330,8 +4320,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4406,8 +4395,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4469,8 +4457,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4510,8 +4497,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4567,8 +4553,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4608,8 +4593,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4673,8 +4657,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4707,13 +4690,9 @@ See \`config.log' for more details." >&2
 esac
 else
   if test "$cross_compiling" = yes; then
-  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
-echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&5
-echo "$as_me: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&2;}
-   { (exit 1); exit 1; }; }; }
+  { { echo "$as_me:$LINENO: error: internal error: not reached in cross-compile" >&5
+echo "$as_me: error: internal error: not reached in cross-compile" >&2;}
+   { (exit 1); exit 1; }; }
 else
   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -4826,8 +4805,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4889,8 +4867,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4930,8 +4907,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4987,8 +4963,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5028,8 +5003,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5093,8 +5067,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5127,13 +5100,9 @@ See \`config.log' for more details." >&2
 esac
 else
   if test "$cross_compiling" = yes; then
-  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
-echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&5
-echo "$as_me: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&2;}
-   { (exit 1); exit 1; }; }; }
+  { { echo "$as_me:$LINENO: error: internal error: not reached in cross-compile" >&5
+echo "$as_me: error: internal error: not reached in cross-compile" >&2;}
+   { (exit 1); exit 1; }; }
 else
   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -5246,8 +5215,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5309,8 +5277,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5350,8 +5317,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5407,8 +5373,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5448,8 +5413,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5513,8 +5477,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5547,13 +5510,9 @@ See \`config.log' for more details." >&2
 esac
 else
   if test "$cross_compiling" = yes; then
-  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
-echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&5
-echo "$as_me: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&2;}
-   { (exit 1); exit 1; }; }; }
+  { { echo "$as_me:$LINENO: error: internal error: not reached in cross-compile" >&5
+echo "$as_me: error: internal error: not reached in cross-compile" >&2;}
+   { (exit 1); exit 1; }; }
 else
   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -5666,8 +5625,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5729,8 +5687,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5770,8 +5727,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5827,8 +5783,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5868,8 +5823,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5933,8 +5887,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5967,13 +5920,9 @@ See \`config.log' for more details." >&2
 esac
 else
   if test "$cross_compiling" = yes; then
-  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
-echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&5
-echo "$as_me: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&2;}
-   { (exit 1); exit 1; }; }; }
+  { { echo "$as_me:$LINENO: error: internal error: not reached in cross-compile" >&5
+echo "$as_me: error: internal error: not reached in cross-compile" >&2;}
+   { (exit 1); exit 1; }; }
 else
   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -6086,8 +6035,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6148,8 +6096,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6211,8 +6158,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6252,8 +6198,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6309,8 +6254,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6350,8 +6294,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6415,8 +6358,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6449,13 +6391,9 @@ See \`config.log' for more details." >&2
 esac
 else
   if test "$cross_compiling" = yes; then
-  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
-echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&5
-echo "$as_me: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&2;}
-   { (exit 1); exit 1; }; }; }
+  { { echo "$as_me:$LINENO: error: internal error: not reached in cross-compile" >&5
+echo "$as_me: error: internal error: not reached in cross-compile" >&2;}
+   { (exit 1); exit 1; }; }
 else
   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -6570,8 +6508,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6632,8 +6569,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6695,8 +6631,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6736,8 +6671,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6793,8 +6727,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6834,8 +6767,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6899,8 +6831,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6933,13 +6864,9 @@ See \`config.log' for more details." >&2
 esac
 else
   if test "$cross_compiling" = yes; then
-  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
-echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&5
-echo "$as_me: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&2;}
-   { (exit 1); exit 1; }; }; }
+  { { echo "$as_me:$LINENO: error: internal error: not reached in cross-compile" >&5
+echo "$as_me: error: internal error: not reached in cross-compile" >&2;}
+   { (exit 1); exit 1; }; }
 else
   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -7069,8 +6996,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -7136,8 +7062,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -7200,8 +7125,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -7448,8 +7372,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8835,8 +8758,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9001,8 +8923,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9063,8 +8984,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9134,8 +9054,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9410,8 +9329,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9484,8 +9402,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9527,8 +9444,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9585,8 +9501,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9729,8 +9644,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9804,8 +9718,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9859,8 +9772,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9938,8 +9850,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9993,8 +9904,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -10062,8 +9972,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -10201,8 +10110,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -10323,8 +10231,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -10389,8 +10296,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -10538,8 +10444,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -10656,8 +10561,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -10769,8 +10673,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -10928,8 +10831,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -10971,18 +10873,24 @@ else
   ac_cv_func_fork_works=cross
 else
   cat >conftest.$ac_ext <<_ACEOF
-/* By Ruediger Kuhlmann. */
-      #include <sys/types.h>
-      #if HAVE_UNISTD_H
-      # include <unistd.h>
-      #endif
-      /* Some systems only have a dummy stub for fork() */
-      int main ()
-      {
-	if (fork() < 0)
-	  exit (1);
-	exit (0);
-      }
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+
+	  /* By Ruediger Kuhlmann. */
+	  if (fork() < 0)
+	    exit (1);
+	  exit (0);
+
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
@@ -11801,8 +11709,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -11852,8 +11759,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -11943,8 +11849,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12013,8 +11918,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12077,8 +11981,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12196,8 +12099,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12282,8 +12184,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12352,8 +12253,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12428,8 +12328,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12512,8 +12411,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12594,8 +12492,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12671,8 +12568,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12738,8 +12634,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12875,8 +12770,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -13152,8 +13046,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_c
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -13309,8 +13202,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -13593,8 +13485,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -13648,8 +13539,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -14359,13 +14249,13 @@ if test "${lt_cv_nm_interface+set}" = se
 else
   lt_cv_nm_interface="BSD nm"
   echo "int some_variable = 0;" > conftest.$ac_ext
-  (eval echo "\"\$as_me:14362: $ac_compile\"" >&5)
+  (eval echo "\"\$as_me:14252: $ac_compile\"" >&5)
   (eval "$ac_compile" 2>conftest.err)
   cat conftest.err >&5
-  (eval echo "\"\$as_me:14365: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
+  (eval echo "\"\$as_me:14255: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
   (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
   cat conftest.err >&5
-  (eval echo "\"\$as_me:14368: output\"" >&5)
+  (eval echo "\"\$as_me:14258: output\"" >&5)
   cat conftest.out >&5
   if $GREP 'External.*some_variable' conftest.out > /dev/null; then
     lt_cv_nm_interface="MS dumpbin"
@@ -15522,7 +15412,7 @@ ia64-*-hpux*)
   ;;
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 15525 "configure"' > conftest.$ac_ext
+  echo '#line 15415 "configure"' > conftest.$ac_ext
   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -15649,8 +15539,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -16203,8 +16092,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -16821,11 +16709,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:16824: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:16712: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:16828: \$? = $ac_status" >&5
+   echo "$as_me:16716: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -17160,11 +17048,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:17163: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:17051: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:17167: \$? = $ac_status" >&5
+   echo "$as_me:17055: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -17265,11 +17153,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:17268: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:17156: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:17272: \$? = $ac_status" >&5
+   echo "$as_me:17160: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -17320,11 +17208,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:17323: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:17211: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:17327: \$? = $ac_status" >&5
+   echo "$as_me:17215: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -17845,8 +17733,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -17914,8 +17801,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -18170,8 +18056,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -19143,8 +19028,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -19592,8 +19476,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -19696,8 +19579,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -19762,8 +19644,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -19856,8 +19737,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -19922,8 +19802,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -19989,8 +19868,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -20056,8 +19934,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -20132,7 +20009,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 20135 "configure"
+#line 20012 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -20228,7 +20105,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 20231 "configure"
+#line 20108 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -21797,6 +21674,45 @@ cat >>confdefs.h <<_ACEOF
 _ACEOF
 
 
+echo "$as_me:$LINENO: checking assembler for line table discriminator support" >&5
+echo $ECHO_N "checking assembler for line table discriminator support... $ECHO_C" >&6
+if test "${gcc_cv_as_discriminator+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  gcc_cv_as_discriminator=no
+    if test $in_tree_gas = yes; then
+    if test $gcc_cv_gas_vers -ge `expr \( \( 2 \* 1000 \) + 19 \) \* 1000 + 51`
+  then gcc_cv_as_discriminator=yes
+fi
+  elif test x$gcc_cv_as != x; then
+    echo '	.text
+	.file 1 "conf.c"
+	.loc 1 1 0 discriminator 1' > conftest.s
+    if { ac_try='$gcc_cv_as  -o conftest.o conftest.s >&5'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }
+    then
+	gcc_cv_as_discriminator=yes
+    else
+      echo "configure: failed program was" >&5
+      cat conftest.s >&5
+    fi
+    rm -f conftest.o conftest.s
+  fi
+fi
+echo "$as_me:$LINENO: result: $gcc_cv_as_discriminator" >&5
+echo "${ECHO_T}$gcc_cv_as_discriminator" >&6
+if test $gcc_cv_as_discriminator = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GAS_DISCRIMINATOR 1
+_ACEOF
+
+fi
+
 # Thread-local storage - the check is heavily parameterized.
 conftest_s=
 tls_first_major=
@@ -24216,8 +24132,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -24740,8 +24655,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -24796,8 +24710,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -24852,8 +24765,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_l
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -25923,11 +25835,6 @@ esac
 
 
 
-  if test x"$ac_file" != x-; then
-    { echo "$as_me:$LINENO: creating $ac_file" >&5
-echo "$as_me: creating $ac_file" >&6;}
-    rm -f "$ac_file"
-  fi
   # Let's still pretend it is `configure' which instantiates (i.e., don't
   # use $as_me), people would be surprised to read:
   #    /* config.h.  Generated by config.status.  */
@@ -25966,6 +25873,12 @@ echo "$as_me: error: cannot find input f
 	 fi;;
       esac
     done` || { (exit 1); exit 1; }
+
+  if test x"$ac_file" != x-; then
+    { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+    rm -f "$ac_file"
+  fi
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF
   sed "$ac_vpsub
Index: final.c
===================================================================
--- final.c	(revision 146448)
+++ final.c	(working copy)
@@ -130,6 +130,12 @@ rtx current_output_insn;
 /* Line number of last NOTE.  */
 static int last_linenum;
 
+/* Last discriminator written to assembly.  */
+static int last_discriminator;
+
+/* Discriminator of current block.  */
+static int discriminator;
+
 /* Highest line number in current block.  */
 static int high_block_linenum;
 
@@ -1486,6 +1492,7 @@ final_start_function (rtx first ATTRIBUT
 
   last_filename = locator_file (prologue_locator);
   last_linenum = locator_line (prologue_locator);
+  last_discriminator = discriminator = 0;
 
   high_block_linenum = high_function_linenum = last_linenum;
 
@@ -1842,6 +1849,8 @@ final_scan_insn (rtx insn, FILE *file, i
 	  else
 	    *seen |= SEEN_BB;
 
+          discriminator = NOTE_BASIC_BLOCK (insn)->discriminator;
+
 	  break;
 
 	case NOTE_INSN_EH_REGION_BEG:
@@ -2170,7 +2179,9 @@ final_scan_insn (rtx insn, FILE *file, i
 	   note in a row.  */
 	if (notice_source_line (insn))
 	  {
-	    (*debug_hooks->source_line) (last_linenum, last_filename);
+	    (*debug_hooks->source_line) (last_linenum,
+	                                 last_filename,
+	                                 last_discriminator);
 	  }
 
 	if (GET_CODE (body) == ASM_INPUT)
@@ -2687,11 +2698,13 @@ notice_source_line (rtx insn)
   if (filename
       && (force_source_line
 	  || filename != last_filename
-	  || last_linenum != linenum))
+	  || last_linenum != linenum
+	  || last_discriminator != discriminator))
     {
       force_source_line = false;
       last_filename = filename;
       last_linenum = linenum;
+      last_discriminator = discriminator;
       high_block_linenum = MAX (last_linenum, high_block_linenum);
       high_function_linenum = MAX (last_linenum, high_function_linenum);
       return true;
Index: vmsdbgout.c
===================================================================
--- vmsdbgout.c	(revision 146448)
+++ vmsdbgout.c	(working copy)
@@ -173,7 +173,7 @@ static void vmsdbgout_end_source_file (u
 static void vmsdbgout_begin_block (unsigned int, unsigned int);
 static void vmsdbgout_end_block (unsigned int, unsigned int);
 static bool vmsdbgout_ignore_block (const_tree);
-static void vmsdbgout_source_line (unsigned int, const char *);
+static void vmsdbgout_source_line (unsigned int, const char *, int);
 static void vmsdbgout_begin_prologue (unsigned int, const char *);
 static void vmsdbgout_end_prologue (unsigned int, const char *);
 static void vmsdbgout_end_function (unsigned int);
@@ -1297,7 +1297,7 @@ vmsdbgout_end_prologue (unsigned int lin
       ASM_OUTPUT_LABEL (asm_out_file, label);
 
       /* VMS PCA expects every PC range to correlate to some line and file.  */
-      vmsdbgout_source_line (line, file);
+      vmsdbgout_source_line (line, file, 0);
     }
 }
 
@@ -1331,7 +1331,7 @@ vmsdbgout_end_epilogue (unsigned int lin
       ASM_OUTPUT_LABEL (asm_out_file, label);
 
       /* VMS PCA expects every PC range to correlate to some line and file.  */
-      vmsdbgout_source_line (line, file);
+      vmsdbgout_source_line (line, file, 0);
     }
 }
 
@@ -1533,10 +1533,11 @@ lookup_filename (const char *file_name)
    'line_info_table' for later output of the .debug_line section.  */
 
 static void
-vmsdbgout_source_line (register unsigned line, register const char *filename)
+vmsdbgout_source_line (register unsigned line, register const char *filename,
+                       int discriminator)
 {
   if (write_symbols == VMS_AND_DWARF2_DEBUG)
-    (*dwarf2_debug_hooks.source_line) (line, filename);
+    (*dwarf2_debug_hooks.source_line) (line, filename, discriminator);
 
   if (debug_info_level >= DINFO_LEVEL_TERSE)
     {
Index: debug.c
===================================================================
--- debug.c	(revision 146448)
+++ debug.c	(working copy)
@@ -34,7 +34,7 @@ const struct gcc_debug_hooks do_nothing_
   debug_nothing_int_int,	         /* begin_block */
   debug_nothing_int_int,	         /* end_block */
   debug_true_const_tree,	         /* ignore_block */
-  debug_nothing_int_charstar,	         /* source_line */
+  debug_nothing_int_charstar_int,	 /* source_line */
   debug_nothing_int_charstar,	         /* begin_prologue */
   debug_nothing_int_charstar,	         /* end_prologue */
   debug_nothing_int_charstar,	         /* end_epilogue */
@@ -104,6 +104,13 @@ debug_nothing_int_charstar (unsigned int
 }
 
 void
+debug_nothing_int_charstar_int (unsigned int line ATTRIBUTE_UNUSED,
+			        const char *text ATTRIBUTE_UNUSED,
+			        int discriminator ATTRIBUTE_UNUSED)
+{
+}
+
+void
 debug_nothing_int (unsigned int line ATTRIBUTE_UNUSED)
 {
 }
Index: debug.h
===================================================================
--- debug.h	(revision 146448)
+++ debug.h	(working copy)
@@ -59,8 +59,9 @@ struct gcc_debug_hooks
      though the BLOCK information is messed up.  Defaults to true.  */
   bool (* ignore_block) (const_tree);
 
-  /* Record a source file location at (FILE, LINE).  */
-  void (* source_line) (unsigned int line, const char *file);
+  /* Record a source file location at (FILE, LINE, DISCRIMINATOR).  */
+  void (* source_line) (unsigned int line, const char *file,
+                        int discriminator);
 
   /* Called at start of prologue code.  LINE is the first line in the
      function.  This has been given the same prototype as source_line,
@@ -139,6 +140,7 @@ extern const struct gcc_debug_hooks *deb
 extern void debug_nothing_void (void);
 extern void debug_nothing_charstar (const char *);
 extern void debug_nothing_int_charstar (unsigned int, const char *);
+extern void debug_nothing_int_charstar_int (unsigned int, const char *, int);
 extern void debug_nothing_int (unsigned int);
 extern void debug_nothing_int_int (unsigned int, unsigned int);
 extern void debug_nothing_tree (tree);
Index: dbxout.c
===================================================================
--- dbxout.c	(revision 146448)
+++ dbxout.c	(working copy)
@@ -336,7 +336,7 @@ static void dbxout_handle_pch (unsigned)
 /* The debug hooks structure.  */
 #if defined (DBX_DEBUGGING_INFO)
 
-static void dbxout_source_line (unsigned int, const char *);
+static void dbxout_source_line (unsigned int, const char *, int);
 static void dbxout_begin_prologue (unsigned int, const char *);
 static void dbxout_source_file (const char *);
 static void dbxout_function_end (tree);
@@ -1268,7 +1268,7 @@ dbxout_begin_prologue (unsigned int line
   /* pre-increment the scope counter */
   scope_labelno++;
 
-  dbxout_source_line (lineno, filename);
+  dbxout_source_line (lineno, filename, 0);
   /* Output function begin block at function scope, referenced 
      by dbxout_block, dbxout_source_line and dbxout_function_end.  */
   emit_pending_bincls_if_required ();
@@ -1279,7 +1279,8 @@ dbxout_begin_prologue (unsigned int line
    number LINENO.  */
 
 static void
-dbxout_source_line (unsigned int lineno, const char *filename)
+dbxout_source_line (unsigned int lineno, const char *filename,
+                    int discriminator ATTRIBUTE_UNUSED)
 {
   dbxout_source_file (filename);
 
Index: xcoffout.c
===================================================================
--- xcoffout.c	(revision 146448)
+++ xcoffout.c	(working copy)
@@ -321,7 +321,8 @@ xcoffout_source_file (FILE *file, const 
 /* Output a line number symbol entry for location (FILENAME, LINE).  */
 
 void
-xcoffout_source_line (unsigned int line, const char *filename)
+xcoffout_source_line (unsigned int line, const char *filename,
+                      int discriminator ATTRIBUTE_UNUSED)
 {
   bool inline_p = (strcmp (xcoff_current_function_file, filename) != 0
 		   || (int) line < xcoff_begin_function_line);
Index: config.in
===================================================================
--- config.in	(revision 146448)
+++ config.in	(working copy)
@@ -844,6 +844,12 @@
 #endif
 
 
+/* Define if your assembler supports the .loc discriminator sub-directive. */
+#ifndef USED_FOR_TARGET
+#undef HAVE_GAS_DISCRIMINATOR
+#endif
+
+
 /* Define if your assembler uses the new HImode fild and fist notation. */
 #ifndef USED_FOR_TARGET
 #undef HAVE_GAS_FILDS_FISTS
Index: dwarf2out.c
===================================================================
--- dwarf2out.c	(revision 146448)
+++ dwarf2out.c	(working copy)
@@ -91,7 +91,7 @@ along with GCC; see the file COPYING3.  
 #include "input.h"
 
 #ifdef DWARF2_DEBUGGING_INFO
-static void dwarf2out_source_line (unsigned int, const char *);
+static void dwarf2out_source_line (unsigned int, const char *, int);
 #endif
 
 #ifndef DWARF2_FRAME_INFO
@@ -3243,7 +3243,7 @@ dwarf2out_begin_prologue (unsigned int l
      prologue case, not the eh frame case.  */
 #ifdef DWARF2_DEBUGGING_INFO
   if (file)
-    dwarf2out_source_line (line, file);
+    dwarf2out_source_line (line, file, 0);
 #endif
 
   if (dwarf2out_do_cfi_asm ())
@@ -15871,7 +15871,8 @@ dwarf2out_begin_function (tree fun)
    'line_info_table' for later output of the .debug_line section.  */
 
 static void
-dwarf2out_source_line (unsigned int line, const char *filename)
+dwarf2out_source_line (unsigned int line, const char *filename,
+                       int discriminator)
 {
   if (debug_info_level >= DINFO_LEVEL_NORMAL
       && line != 0)
@@ -15888,7 +15889,12 @@ dwarf2out_source_line (unsigned int line
       if (DWARF2_ASM_LINE_DEBUG_INFO)
 	{
 	  /* Emit the .loc directive understood by GNU as.  */
-	  fprintf (asm_out_file, "\t.loc %d %d 0\n", file_num, line);
+	  fprintf (asm_out_file, "\t.loc %d %d 0", file_num, line);
+#ifdef HAVE_GAS_DISCRIMINATOR
+	  if (discriminator != 0)
+	    fprintf (asm_out_file, " discriminator %d", discriminator);
+#endif /* HAVE_GAS_DISCRIMINATOR */
+	  fputc ('\n', asm_out_file);
 
 	  /* Indicate that line number info exists.  */
 	  line_info_table_in_use++;
Index: gimple-pretty-print.c
===================================================================
--- gimple-pretty-print.c	(revision 146448)
+++ gimple-pretty-print.c	(working copy)
@@ -1583,6 +1583,12 @@ dump_bb_header (pretty_printer *buffer, 
 		pp_decimal_int (buffer, get_lineno (gsi_stmt (gsi)));
 		break;
 	      }
+
+          if (bb->discriminator)
+            {
+              pp_string (buffer, ", discriminator ");
+	      pp_decimal_int (buffer, bb->discriminator);
+            }
 	}
       newline_and_indent (buffer, indent);
 
Index: configure.ac
===================================================================
--- configure.ac	(revision 146448)
+++ configure.ac	(working copy)
@@ -2382,6 +2382,15 @@ AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
   [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
 [Define 0/1 if your assembler and linker support COMDAT groups.])
 
+gcc_GAS_CHECK_FEATURE([line table discriminator support],
+ gcc_cv_as_discriminator,
+ [2,19,51],,
+[	.text
+	.file 1 "conf.c"
+	.loc 1 1 0 discriminator 1],,
+[AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
+  [Define if your assembler supports the .loc discriminator sub-directive.])])
+
 # Thread-local storage - the check is heavily parameterized.
 conftest_s=
 tls_first_major=
Index: sdbout.c
===================================================================
--- sdbout.c	(revision 146448)
+++ sdbout.c	(working copy)
@@ -117,7 +117,7 @@ static void sdbout_start_source_file	(un
 static void sdbout_end_source_file	(unsigned int);
 static void sdbout_begin_block		(unsigned int, unsigned int);
 static void sdbout_end_block		(unsigned int, unsigned int);
-static void sdbout_source_line		(unsigned int, const char *);
+static void sdbout_source_line		(unsigned int, const char *, int);
 static void sdbout_end_epilogue		(unsigned int, const char *);
 static void sdbout_global_decl		(tree);
 #ifndef MIPS_DEBUGGING_INFO
@@ -1541,7 +1541,8 @@ sdbout_end_block (unsigned int line, uns
    number LINE.  */
 
 static void
-sdbout_source_line (unsigned int line, const char *filename ATTRIBUTE_UNUSED)
+sdbout_source_line (unsigned int line, const char *filename ATTRIBUTE_UNUSED,
+                    int discriminator ATTRIBUTE_UNUSED)
 {
   /* COFF relative line numbers must be positive.  */
   if ((int) line > sdb_begin_function_line)
Index: basic-block.h
===================================================================
--- basic-block.h	(revision 146448)
+++ basic-block.h	(working copy)
@@ -253,6 +253,9 @@ struct basic_block_def GTY((chain_next (
   /* Expected frequency.  Normalized to be in range 0 to BB_FREQ_MAX.  */
   int frequency;
 
+  /* The discriminator for this block.  */
+  int discriminator;
+
   /* Various flags.  See BB_* below.  */
   int flags;
 };
Index: tree-cfg.c
===================================================================
--- tree-cfg.c	(revision 146448)
+++ tree-cfg.c	(working copy)
@@ -82,6 +82,14 @@ static struct cfg_stats_d cfg_stats;
 /* Nonzero if we found a computed goto while building basic blocks.  */
 static bool found_computed_goto;
 
+/* Hash table to store last discriminator assigned for each locus.  */
+struct locus_discrim_map
+{
+  location_t locus;
+  int discriminator;
+};
+static htab_t discriminator_per_locus;
+
 /* Basic blocks and flowgraphs.  */
 static void make_blocks (gimple_seq);
 static void factor_computed_gotos (void);
@@ -91,6 +99,9 @@ static void make_edges (void);
 static void make_cond_expr_edges (basic_block);
 static void make_gimple_switch_edges (basic_block);
 static void make_goto_expr_edges (basic_block);
+static unsigned int locus_map_hash (const void*);
+static int locus_map_eq (const void*, const void*);
+static void assign_discriminator (location_t, basic_block);
 static edge gimple_redirect_edge_and_branch (edge, basic_block);
 static edge gimple_try_redirect_by_replacing_jump (edge, basic_block);
 static unsigned int split_critical_edges (void);
@@ -100,6 +111,7 @@ static inline bool stmt_starts_bb_p (gim
 static int gimple_verify_flow_info (void);
 static void gimple_make_forwarder_block (edge);
 static void gimple_cfg2vcg (FILE *);
+static gimple first_non_label_stmt (basic_block);
 
 /* Flowgraph optimization and cleanup.  */
 static void gimple_merge_blocks (basic_block, basic_block);
@@ -193,8 +205,11 @@ build_gimple_cfg (gimple_seq seq)
   group_case_labels ();
 
   /* Create the edges of the flowgraph.  */
+  discriminator_per_locus = htab_create (13, locus_map_hash, locus_map_eq,
+                                         free);
   make_edges ();
   cleanup_dead_labels ();
+  htab_delete (discriminator_per_locus);
 
   /* Debugging dumps.  */
 
@@ -650,7 +665,11 @@ make_edges (void)
 	fallthru = true;
 
       if (fallthru)
-	make_edge (bb, bb->next_bb, EDGE_FALLTHRU);
+        {
+	  make_edge (bb, bb->next_bb, EDGE_FALLTHRU);
+	  if (last)
+            assign_discriminator (gimple_location (last), bb->next_bb);
+	}
     }
 
   if (root_omp_region)
@@ -660,6 +679,67 @@ make_edges (void)
   fold_cond_expr_cond ();
 }
 
+/* Trivial hash function for a location_t.  */
+
+static unsigned int
+locus_map_hash (const void* item)
+{
+  return ((const struct locus_discrim_map*) item)->locus;
+}
+
+/* Equality function for the locus-to-discriminator map.  */
+
+static int
+locus_map_eq (const void* va, const void* vb)
+{
+  const struct locus_discrim_map* a = (const struct locus_discrim_map*) va;
+  const struct locus_discrim_map* b = (const struct locus_discrim_map*) vb;
+  return a->locus == b->locus;
+}
+
+/* Find the next available discriminator value for LOCUS.  The
+   discriminator distinguishes among several basic blocks that
+   share a common locus, allowing for more accurate sample-based
+   profiling.  */
+
+static int
+next_discriminator_for_locus (location_t locus)
+{
+  struct locus_discrim_map item;
+  struct locus_discrim_map** slot;
+
+  item.locus = locus;
+  item.discriminator = 0;
+  slot = (struct locus_discrim_map**)
+      htab_find_slot_with_hash (discriminator_per_locus, (void *) &item,
+                                (hashval_t) locus, INSERT);
+  gcc_assert (slot);
+  if (*slot == HTAB_EMPTY_ENTRY)
+    {
+      *slot = XNEW (struct locus_discrim_map);
+      gcc_assert (*slot);
+      (*slot)->locus = locus;
+      (*slot)->discriminator = 0;
+    }
+  (*slot)->discriminator++;
+  return (*slot)->discriminator;
+}
+
+/* Assign a unique discriminator value to block BB if it begins at the same
+   LOCUS as its predecessor block.  */
+
+static void
+assign_discriminator (location_t locus, basic_block bb)
+{
+  gimple to_stmt;
+
+  if (bb->discriminator != 0)
+    return;
+
+  to_stmt = first_non_label_stmt (bb);
+  if (to_stmt && locus == gimple_location (to_stmt))
+    bb->discriminator = next_discriminator_for_locus (locus);
+}
 
 /* Create the edges for a GIMPLE_COND starting at block BB.  */
 
@@ -671,10 +751,13 @@ make_cond_expr_edges (basic_block bb)
   basic_block then_bb, else_bb;
   tree then_label, else_label;
   edge e;
+  location_t entry_locus;
 
   gcc_assert (entry);
   gcc_assert (gimple_code (entry) == GIMPLE_COND);
 
+  entry_locus = gimple_location (entry);
+
   /* Entry basic blocks for each component.  */
   then_label = gimple_cond_true_label (entry);
   else_label = gimple_cond_false_label (entry);
@@ -684,12 +767,14 @@ make_cond_expr_edges (basic_block bb)
   else_stmt = first_stmt (else_bb);
 
   e = make_edge (bb, then_bb, EDGE_TRUE_VALUE);
+  assign_discriminator (entry_locus, then_bb);
   e->goto_locus = gimple_location (then_stmt);
   if (e->goto_locus)
     e->goto_block = gimple_block (then_stmt);
   e = make_edge (bb, else_bb, EDGE_FALSE_VALUE);
   if (e)
     {
+      assign_discriminator (entry_locus, else_bb);
       e->goto_locus = gimple_location (else_stmt);
       if (e->goto_locus)
 	e->goto_block = gimple_block (else_stmt);
@@ -799,8 +884,11 @@ static void
 make_gimple_switch_edges (basic_block bb)
 {
   gimple entry = last_stmt (bb);
+  location_t entry_locus;
   size_t i, n;
 
+  entry_locus = gimple_location (entry);
+
   n = gimple_switch_num_labels (entry);
 
   for (i = 0; i < n; ++i)
@@ -808,6 +896,7 @@ make_gimple_switch_edges (basic_block bb
       tree lab = CASE_LABEL (gimple_switch_label (entry, i));
       basic_block label_bb = label_to_block (lab);
       make_edge (bb, label_bb, 0);
+      assign_discriminator (entry_locus, label_bb);
     }
 }
 
@@ -880,8 +969,10 @@ make_goto_expr_edges (basic_block bb)
   if (simple_goto_p (goto_t))
     {
       tree dest = gimple_goto_dest (goto_t);
-      edge e = make_edge (bb, label_to_block (dest), EDGE_FALLTHRU);
+      basic_block label_bb = label_to_block (dest);
+      edge e = make_edge (bb, label_bb, EDGE_FALLTHRU);
       e->goto_locus = gimple_location (goto_t);
+      assign_discriminator (e->goto_locus, label_bb);
       if (e->goto_locus)
 	e->goto_block = gimple_block (goto_t);
       gsi_remove (&last, true);
@@ -2701,6 +2792,17 @@ first_stmt (basic_block bb)
   return !gsi_end_p (i) ? gsi_stmt (i) : NULL;
 }
 
+/* Return the first non-label statement in basic block BB.  */
+
+static gimple
+first_non_label_stmt (basic_block bb)
+{
+  gimple_stmt_iterator i = gsi_start_bb (bb);
+  while (!gsi_end_p (i) && gimple_code (gsi_stmt (i)) == GIMPLE_LABEL)
+    gsi_next (&i);
+  return !gsi_end_p (i) ? gsi_stmt (i) : NULL;
+}
+
 /* Return the last statement in basic block BB.  */
 
 gimple