PATCH: PR25830: Exclude gdb & gprof for pdp11

[Stephen Casner]

Since gdb and gprof are not supported for the pdp11-*-* target, I'd
like to exclude them from the build to save time (and as a side
benefit, avoid complications with conflicting iconv libraries in some
environments).

-- Steve

--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2020-04-17  Stephen Casner  <casner@acm.org>
+
+	PR 25830
+	* configure.ac (noconfigdirs): Exclude gdb & gprof for pdp11.
+	* configure: Rebuild.
+
 2020-03-12  Tom Tromey  <tom@tromey.com>

 	* Makefile.in: Rebuild.
--- a/configure.ac
+++ b/configure.ac
@@ -1117,6 +1117,9 @@ case "${target}" in
     noconfigdirs="$noconfigdirs ld gas gdb gprof sim"
     noconfigdirs="$noconfigdirs $target_libraries"
     ;;
+  pdp11-*-*)
+    noconfigdirs="$noconfigdirs gdb gprof"
+    ;;
   powerpc-*-aix*)
     # copied from rs6000-*-* entry
     noconfigdirs="$noconfigdirs gprof"