configure.host (abi_baseline_pair): If try_cpu is generic use host_cpu for the default.

* configure.host (abi_baseline_pair): If try_cpu is generic use
host_cpu for the default.

From-SVN: r215695

libstdc++-v3/ChangeLog

+2014-09-30  Andreas Schwab  <schwab@linux-m68k.org>
+
+	* configure.host (abi_baseline_pair): If try_cpu is generic use
+	host_cpu for the default.
+
 2014-09-29  François Dumont  <fdumont@gcc.gnu.org>
 
 	PR libstdc++/62313

libstdc++-v3/configure.host

@@ -346,8 +346,13 @@ case "${host}" in
         abi_baseline_pair=x86_64-linux-gnu
         ;;
       *)
-        if test -d ${glibcxx_srcdir}/config/abi/post/${try_cpu}-linux-gnu; then
-          abi_baseline_pair=${try_cpu}-linux-gnu
+        if test $try_cpu = generic; then
+          try_abi_cpu=$host_cpu
+        else
+          try_abi_cpu=$try_cpu
+        fi
+        if test -d ${glibcxx_srcdir}/config/abi/post/${try_abi_cpu}-linux-gnu; then
+          abi_baseline_pair=${try_abi_cpu}-linux-gnu
         fi
     esac
     case "${host}" in