Introduce dg-add-options net_ts

	* testsuite/lib/dg-options.exp (add_options_for_net_ts): New proc.
	* testsuite/experimental/net/internet/address/v4/comparisons.cc:
	Add dg-add-options net_ts.
	* testsuite/experimental/net/internet/address/v4/cons.cc: Likewise.
	* testsuite/experimental/net/internet/address/v4/creation.cc: Likewise.
	* testsuite/experimental/net/internet/address/v4/members.cc: Likewise.
	* testsuite/experimental/net/internet/resolver/base.cc: Likewise.
	* testsuite/experimental/net/internet/resolver/ops/lookup.cc: Likewise.
	* testsuite/experimental/net/internet/resolver/ops/reverse.cc: Likewise.

From-SVN: r265192

libstdc++-v3/ChangeLog

+2018-10-16  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* testsuite/lib/dg-options.exp (add_options_for_net_ts): New proc.
+	* testsuite/experimental/net/internet/address/v4/comparisons.cc:
+	Add dg-add-options net_ts.
+	* testsuite/experimental/net/internet/address/v4/cons.cc: Likewise.
+	* testsuite/experimental/net/internet/address/v4/creation.cc: Likewise.
+	* testsuite/experimental/net/internet/address/v4/members.cc: Likewise.
+	* testsuite/experimental/net/internet/resolver/base.cc: Likewise.
+	* testsuite/experimental/net/internet/resolver/ops/lookup.cc: Likewise.
+	* testsuite/experimental/net/internet/resolver/ops/reverse.cc: Likewise.
+
 2018-10-16  Jonathan Wakely  <jwakely@redhat.com>
 
 	* testsuite/20_util/duration/literals/range_neg.cc: Adjust pruned

libstdc++-v3/testsuite/experimental/net/internet/address/v4/comparisons.cc

@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++14" }
+// { dg-add-options net_ts }
 
 #include <experimental/internet>
 #include <testsuite_hooks.h>

libstdc++-v3/testsuite/experimental/net/internet/address/v4/cons.cc

@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++14" }
+// { dg-add-options net_ts }
 
 #include <experimental/internet>
 #include <testsuite_hooks.h>

libstdc++-v3/testsuite/experimental/net/internet/address/v4/creation.cc

@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++14" }
+// { dg-add-options net_ts }
 
 #include <experimental/internet>
 #include <testsuite_hooks.h>

libstdc++-v3/testsuite/experimental/net/internet/address/v4/members.cc

@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++14" }
+// { dg-add-options net_ts }
 
 #include <experimental/internet>
 #include <testsuite_hooks.h>

libstdc++-v3/testsuite/experimental/net/internet/resolver/base.cc

@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++14" }
+// { dg-add-options net_ts }
 
 #include <experimental/internet>
 #include <testsuite_hooks.h>

libstdc++-v3/testsuite/experimental/net/internet/resolver/ops/lookup.cc

@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++14" }
+// { dg-add-options net_ts }
 
 #include <experimental/internet>
 #include <testsuite_hooks.h>

libstdc++-v3/testsuite/experimental/net/internet/resolver/ops/reverse.cc

@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // { dg-options "-std=gnu++14" }
+// { dg-add-options net_ts }
 
 #include <experimental/internet>
 #include <testsuite_hooks.h>

libstdc++-v3/testsuite/lib/dg-options.exp

@@ -246,6 +246,17 @@ proc add_options_for_no_pch { flags } {
     return "-D__GLIBCXX__=99999999"
 }
 
+# Add to FLAGS all the target-specific flags needed for networking.
+
+proc add_options_for_net_ts { flags } {
+    # Before they were integrated into libc in Solaris 11.4, Solaris needs
+    # libsocket and libnsl for networking applications.
+    if { [istarget *-*-solaris2*] } {
+	return "$flags -lsocket -lnsl"
+    }
+    return $flags
+}
+
 # Like dg-options, but adds to the default options rather than replacing them.
 
 proc dg-additional-options { args } {