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# TensorFlow Lite Objective-C API.

package(default_visibility = ["//visibility:private"])

licenses(["notice"])  # Apache 2.0

load("//tools/build_defs/apple:ios.bzl", "ios_unit_test")

SOURCES = glob([
    "sources/*.h",
    "sources/*.m",
    "sources/*.mm",
])

API_HEADERS = glob([
    "apis/*.h",
])

MINIMUM_OS_VERSION = "8.0"

# Compiler flags for building regular non-test libraries.
RELEASE_COPTS = [
    # Enables language-specific warnings for Objective-C, Objective-C++, C, and C++.
    "-Wall",
    # Warns if functions, variables, and types marked with the deprecated attribute are being used.
    "-Wdeprecated-declarations",
    # Warns for errors in documentation.
    "-Wdocumentation",
    # Turns all warnings into errors.
    "-Werror",
    # Enables extra warning flags that are not enabled by -Wall.
    "-Wextra",
    # Warns if a global function is defined without a previous prototype declaration.
    "-Wmissing-prototypes",
    # From -Wextra. Disables warning when signed value is converted to unsigned value during comparison.
    "-Wno-sign-compare",
    # From -Wextra. Disables warning for unused parameters, which are common in delegate methods and block callbacks.
    "-Wno-unused-parameter",
    # Warns if a global or local variable or type declaration shadows another variable, parameter, type, class member, or instance variable.
    "-Wshadow",
    # Warns if a function is declared or defined without specifying the argument types. For a block with no args, use (void) instead of ().
    "-Wstrict-prototypes",
    # Warns if an @selector() expression is encountered with a method name that hasn't been defined yet.
    "-Wundeclared-selector",

    # Turn off warnings for headers not part of TensorFlow Lite Objective-C API.
    "--system-header-prefix=third_party/tensorflow/contrib/lite/experimental/c/",
]

# Compiler flags for building test libraries.
TEST_COPTS = RELEASE_COPTS + [
    # From -Wall. Disables warning when passing nil to a callee that requires a non-null argument.
    "-Wno-nonnull",
    # Disables warning when a global or local variable or type declaration shadows another.
    "-Wno-shadow",
]

objc_library(
    name = "TensorFlowLiteObjCLib",
    srcs = SOURCES,
    hdrs = API_HEADERS,
    copts = RELEASE_COPTS,
    deps = [
        "//tensorflow/contrib/lite/experimental/c:c_api",
    ],
    alwayslink = 1,
)

ios_unit_test(
    name = "TensorFlowLiteObjCTests",
    size = "small",
    minimum_os_version = MINIMUM_OS_VERSION,
    deps = [":TensorFlowLiteObjCTestLib"],
)

objc_library(
    name = "TensorFlowLiteObjCTestLib",
    testonly = 1,
    srcs = glob([
        "tests/*.m",
    ]),
    hdrs = glob([
        "apis/*.h",
        "sources/*.h",
        "tests/*.h",
    ]),
    copts = TEST_COPTS,
    resources = [
        "//tensorflow/contrib/lite:testdata/add.bin",
    ],
    deps = [
        ":TensorFlowLiteObjCLib",
    ],
)