Support versioned=%d at the section level.

Test: nose2
Bug: https://github.com/android-ndk/ndk/issues/265
Change-Id: I4c22cb8069f41861613ecf01f7e1adbe1d3118a9

cc/gen_stub_libs.py

@@ -289,6 +289,7 @@ class Generator(object):
         if should_omit_version(name, tags, self.arch, self.api):
             return
 
+        section_versioned = symbol_versioned_in_api(tags, self.api)
         version_empty = True
         pruned_symbols = []
         for symbol in version.symbols:
@@ -302,11 +303,12 @@ class Generator(object):
             pruned_symbols.append(symbol)
 
         if len(pruned_symbols) > 0:
-            if not version_empty:
+            if not version_empty and section_versioned:
                 self.version_script.write(version.name + ' {\n')
                 self.version_script.write('    global:\n')
             for symbol in pruned_symbols:
-                if symbol_versioned_in_api(symbol.tags, self.api):
+                emit_version = symbol_versioned_in_api(symbol.tags, self.api)
+                if section_versioned and emit_version:
                     self.version_script.write('        ' + symbol.name + ';\n')
 
                 if 'var' in symbol.tags:
@@ -314,7 +316,7 @@ class Generator(object):
                 else:
                     self.src_file.write('void {}() {{}}\n'.format(symbol.name))
 
-            if not version_empty:
+            if not version_empty and section_versioned:
                 base = '' if version.base is None else ' ' + version.base
                 self.version_script.write('}' + base + ';\n')
 

cc/test_gen_stub_libs.py

@@ -407,6 +407,14 @@ class IntegrationTest(unittest.TestCase):
                 woodly;
                 doodly; # var
             } VERSION_2;
+
+            VERSION_4 { # versioned=9
+                wibble;
+            } VERSION_2;
+
+            VERSION_5 { # versioned=14
+                wobble;
+            } VERSION_4;
         """))
         parser = gsl.SymbolFileParser(input_file)
         versions = parser.parse()
@@ -420,6 +428,8 @@ class IntegrationTest(unittest.TestCase):
             int foo = 0;
             void baz() {}
             void qux() {}
+            void wibble() {}
+            void wobble() {}
         """)
         self.assertEqual(expected_src, src_file.getvalue())
 
@@ -432,6 +442,10 @@ class IntegrationTest(unittest.TestCase):
                 global:
                     baz;
             } VERSION_1;
+            VERSION_4 {
+                global:
+                    wibble;
+            } VERSION_2;
         """)
         self.assertEqual(expected_version, version_file.getvalue())