Add test to check compiler version

Change-Id: Id96eae79c6140074b154c0c987b770f24f4dd19c

starboard/nplb/BUILD.gn

@@ -303,6 +303,12 @@ target(gtest_target_type, "nplb") {
     "window_get_size_test.cc",
   ]
 
+  if (!is_android) {
+    # Android has a different clang version than linux.
+    sources +=
+        [ "//starboard/nplb/compiler_compliance/cpp_compiler_version_check.cc" ]
+  }
+
   configs += [ "//starboard/build/config:starboard_implementation" ]
   if (sb_enable_cast_codec_tests) {
     configs += [ ":cast_codec_tests" ]

starboard/nplb/compiler_compliance/cpp_compiler_version_check.cc

@@ -0,0 +1,32 @@
+// Copyright 2024 The Cobalt Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the aLicense is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <iostream>
+
+#ifdef __clang__
+// Check Clang major version required for building nplb tests.
+// Clang major version can be deduced from "clang_revision" in
+// starboard/build/config/clang.gni
+static_assert(
+    __clang_major__ >= 17,
+    "We compile above starboard targets like cobalt, nplb with "
+    "clang17 or higher. If you are building non-modularly or with a non-cobalt "
+    "provided toolchain you may run into this issue. There are 2 ways around "
+    "this : "
+    "1) Build libnplb modularly using the evergreen toolchain : "
+    "https://developers.google.com/youtube/cobalt/docs/gen/starboard/doc/"
+    "evergreen/cobalt_evergreen_reference_port_raspi2#build_instructions"
+    "2) Update the toolchain used to build nplb to clang17 or higher "
+    "versions.");
+#endif  // __clang__