Merge "Define macros for LLNDK versioning" into main am: 9bceea5a

                    "call with '#if (__ANDROID_VENDOR_API__ >= " #vendor_api_level ")'."))) \

            _Pragma("clang diagnostic pop")

// For the vendor libraries, __INTRODUCED_IN must be ignored because they are only for NDKs but not

// for LLNDKs.

#undef __INTRODUCED_IN

#define __INTRODUCED_IN(x)

// Use this macro as an `if` statement to call an API that are available to both NDK and LLNDK.

// This returns true for the vendor modules if the vendor_api_level is less than or equal to the

// ro.board.api_level.

#define API_LEVEL_AT_LEAST(sdk_api_level, vendor_api_level) \

    constexpr(__ANDROID_VENDOR_API__ >= vendor_api_level)

#else  // __ANDROID_VENDOR__

// For non-vendor libraries, __INTRODUCED_IN_LLNDK must be ignored because it must not change

// symbols of NDK or the system side of the treble boundary. It leaves a no-op annotation for ABI

// analysis.

// __INTRODUCED_IN_LLNDK is for LLNDK only but not for NDK. Ignore this for non-vendor modules.

// It leaves a no-op annotation for ABI analysis.

#if !defined(__INTRODUCED_IN_LLNDK)

#define __INTRODUCED_IN_LLNDK(vendor_api_level) \

    __attribute__((annotate("introduced_in_llndk=" #vendor_api_level)))

#endif

// For non-vendor modules, API_LEVEL_AT_LEAST is replaced with __builtin_available(sdk_api_level) to

// guard the API for __INTRODUCED_IN.

#define API_LEVEL_AT_LEAST(sdk_api_level, vendor_api_level) \

    (__builtin_available(android sdk_api_level, *))

#endif  // __ANDROID_VENDOR__