versioner: replace availability attributes with annotate.
Major refactor to use __attribute__((annotate)) to be able to keep
track of the semantic differences between __INTRODUCED_IN(x) and
__INTRODUCED_IN_X86(x), for use in the upcoming preprocessor.
Bug: http://b/30170081
Change-Id: I6496a8c40ba7f4553de9a2be0bbddcf37c813937
diff --git a/libc/include/android/versioning.h b/libc/include/android/versioning.h
new file mode 100644
index 0000000..3686261
--- /dev/null
+++ b/libc/include/android/versioning.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2016 The Android Open Source Project
+ *
+ * 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 License 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.
+ */
+
+#ifndef ANDROID_VERSIONING_H
+#define ANDROID_VERSIONING_H
+
+#define __INTRODUCED_IN(api_level) __attribute__((annotate("introduced_in=" #api_level)))
+#define __INTRODUCED_IN_FUTURE __attribute__((annotate("introduced_in_future")))
+#define __DEPRECATED_IN(api_level) __attribute__((annotate("deprecated_in=" #api_level)))
+#define __REMOVED_IN(api_level) __attribute__((annotate("obsoleted_in=" #api_level)))
+#define __INTRODUCED_IN_32(api_level) __attribute__((annotate("introduced_in_32=" #api_level)))
+#define __INTRODUCED_IN_64(api_level) __attribute__((annotate("introduced_in_64=" #api_level)))
+#define __INTRODUCED_IN_ARM(api_level) __attribute__((annotate("introduced_in_arm=" #api_level)))
+#define __INTRODUCED_IN_X86(api_level) __attribute__((annotate("introduced_in_x86=" #api_level)))
+#define __INTRODUCED_IN_MIPS(api_level) __attribute__((annotate("introduced_in_mips=" #api_level)))
+
+#endif /* ANDROID_VERSIONING_H */