// Copyright (C) 2018 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.

// A shared library for use on Android by frameworks and other code outside
// of the ART mainline module. It provides a subset of ICU APIs, some
// Android extensions and stable symbols. Most Android target code should
// depend on this library.
//
// With the exception of a few special cases like host apex build targets,
// host binaries should use libicuuc + libicui18n directly.
cc_library_shared {
    name: "libandroidicu",

    // Most code is imported via libandroidicu_static.
    srcs: [
        "aicu/AIcu.cpp",
    ],
    // host_supported is required for some cases, e.g. host apex. This library
    // is not intended for general host use.  Please refer to
    // external/icu/build/icu.go for the full whitelist.
    host_supported: true,
    native_bridge_supported: true,
    unique_host_soname: true,
    apex_available: [
        "com.android.i18n",
        // b/133140750 Clean this up. This is due to the dependency to from libmedia
        "//apex_available:platform",
    ],

    // The implementation of libandroidicu depends on libicuuc and and libicui18n,
    // but we need to export the headers in include/.
    //
    // However, include/unicode has a copy of a subset of header files
    // as in libicuuc and libicui18n. We can't build C/C++ codes against
    // both set of headers, since the headers have the same relative paths,
    // and the compiler will find it ambiguous.
    //
    // Instead, we build the implementation of the shim libaray
    // as a static library aganist libicuuc and libicui18n first,
    // and export the headers in include/.
    whole_static_libs: ["libandroidicu_static"],
    shared_libs: [
        "libbase",
        "libicuuc",
        "libicui18n",
        "liblog",
    ],
    header_libs: ["libandroidicu_headers"],
    export_header_lib_headers: ["libandroidicu_headers"],
    stubs: {
        symbol_file: "libandroidicu.map.txt",
        versions: [
            "1",
        ],
    },
    cppflags: [
        "-std=c++11", // Use the same C++ version as libicuuc
    ],
    cflags: [
        "-Wall",
        "-Werror",
    ],
    target: {
        android: {
            static_libs: [
                "libandroidicuinit",
            ],
            cflags: [
                "-DANDROID_LINK_SHARED_ICU4C",
            ],
            version_script: "libandroidicu.map.txt",
        },
        not_windows: {
            // libandroidicuinit requires mmap(2) in sys/mman.h, but it's not
            // available in the latest MinGW version.
            static_libs: [
                "libandroidicuinit",
            ],
        },
        windows: {
            enabled: true,
        },
    },
}

cc_library_headers {
    name: "libandroidicu_headers",
    host_supported: true,
    native_bridge_supported: true,
    apex_available: [
        "com.android.art.release",
        "com.android.art.debug",
        "com.android.i18n",
    ],

    // include/aicu/: extra utility APIs added by android
    // include/unicode/: Includes modified C headers from ICU4C,
    //                   but excludes C++ headers.
    // include/uconfig_local.h: local configuration specific for libandroidicu
    export_include_dirs: ["include"],
    target: {
        windows: {
            enabled: true,
        },
    },
}

// TODO: http://b/120776993 Testing for libandroidicu