Android.bp

// This Blueprint file loosely follows the logic of cpu_features'
// CMakeLists.txt and test/CMakeLists.txt files.

package {
    default_applicable_licenses: ["external_cpu_features_license"],
}

// Added automatically by a large-scale-change that took the approach of
// 'apply every license found to every target'. While this makes sure we respect
// every license restriction, it may not be entirely correct.
//
// e.g. GPL in an MIT project might only apply to the contrib/ directory.
//
// Please consider splitting the single license below into multiple licenses,
// taking care not to lose any license_kind information, and overriding the
// default license using the 'licenses: [...]' property on targets as needed.
//
// For unused files, consider creating a 'fileGroup' with "//visibility:private"
// to attach the license to, and including a comment whether the files may be
// used in the current project.
// See: http://go/android-license-faq
license {
    name: "external_cpu_features_license",
    visibility: [":__subpackages__"],
    license_kinds: [
        "SPDX-license-identifier-Apache-2.0",
        "SPDX-license-identifier-BSD",
    ],
    license_text: [
        "LICENSE",
    ],
}

cc_defaults {
    name: "cpu_features-defaults",
    host_supported: true,
    local_include_dirs: [
        "include",
    ],
    cflags: [
        // Reserve 1024 bytes on the stack when reading from `/proc/cpuinfo`.
        "-DSTACK_LINE_READER_BUFFER_SIZE=1024",
        "-Wno-gnu-designator",
    ],
    min_sdk_version: "S",
}

cc_library {
    name: "libcpu_features-utils",
    defaults: ["cpu_features-defaults"],
    srcs: [
        "src/filesystem.c",
        "src/stack_line_reader.c",
        "src/string_view.c",
    ],
    target: {
        windows: {
            enabled: true,
        },
    },
    apex_available: [
        "com.android.art",
        "com.android.art.debug",
    ],
}

cc_library {
    name: "libcpu_features-hwcaps",
    defaults: ["cpu_features-defaults"],
    srcs: [
        "src/hwcaps.c",
    ],
    cflags: [
        "-DHAVE_DLFCN_H",
    ],
    target: {
        bionic: {
            cflags: [
                "-DHAVE_STRONG_GETAUXVAL",
            ],
        },
    },
    static_libs: [
        "libcpu_features-utils",
    ],
    apex_available: [
        "com.android.art",
        "com.android.art.debug",
    ],
}

cc_library {
    name: "libcpu_features",
    defaults: [
        "cpu_features-defaults",
    ],
    export_include_dirs: ["include"],
    whole_static_libs: [
        "libcpu_features-utils",
    ],
    arch: {
        arm: {
            srcs: [
                "src/cpuinfo_arm.c",
            ],
            whole_static_libs: [
                "libcpu_features-hwcaps",
            ],
        },
        arm64: {
            srcs: [
                "src/cpuinfo_aarch64.c",
            ],
            whole_static_libs: [
                "libcpu_features-hwcaps",
            ],
            cflags: [
                "-Wno-gnu-designator",
            ],
        },
        x86: {
            srcs: [
                "src/cpuinfo_x86.c",
            ],
            cflags: [
                "-Wno-unused-variable",
            ],
        },
        x86_64: {
            srcs: [
                "src/cpuinfo_x86.c",
            ],
            cflags: [
                "-Wno-unused-variable",
            ],
        },
    },
    target: {
        windows: {
            enabled: true,
        },
    },
    apex_available: [
        "com.android.art",
        "com.android.art.debug",
    ],
}

cc_binary {
    name: "list_cpu_features",
    defaults: [
        "cpu_features-defaults",
    ],
    srcs: [
        "src/utils/list_cpu_features.c",
    ],
    static_libs: [
        "libcpu_features",
    ],
    arch: {
        // Function `AddCacheInfo` in `src/utils/list_cpu_features.c` is only used on x86/x86_64 and
        // triggers an error with `-Werror and `-Wunused-function` on other architectures; disable
        // the latter flag to avoid compilation errors on those architectures.
        arm: {
            cflags: [
                "-Wno-unused-function",
            ],
        },
        arm64: {
            cflags: [
                "-Wno-unused-function",
            ],
        },
    },
}

// Tests.

cc_defaults {
    name: "cpu_features-test-defaults",
    test_suites: ["device-tests"],
    host_supported: true,
    compile_multilib: "both",
    local_include_dirs: [
        "include",
    ],
    cflags: [
        "-DCPU_FEATURES_TEST",
    ],
}

cc_test_library {
    name: "libcpu_features-string_view",
    defaults: ["cpu_features-test-defaults"],
    srcs: [
        "src/string_view.c",
    ],
}

cc_test_library {
    name: "libcpu_features-filesystem_for_testing",
    defaults: ["cpu_features-test-defaults"],
    cflags: [
        "-DCPU_FEATURES_MOCK_FILESYSTEM",
        // TODO: Handle unused parameters in
        // test/filesystem_for_testing.cc and remove this flag.
        "-Wno-unused-parameter",
    ],
    srcs: [
        "test/filesystem_for_testing.cc",
    ],
}

cc_test_library {
    name: "libcpu_features-hwcaps_for_testing",
    defaults: ["cpu_features-test-defaults"],
    cflags: [
        "-DCPU_FEATURES_MOCK_GET_ELF_HWCAP_FROM_GETAUXVAL",
        "-DCPU_FEATURES_TEST",
    ],
    srcs: [
        "src/hwcaps.c",
        "test/hwcaps_for_testing.cc",
    ],
    static_libs: [
        "libcpu_features-string_view",
        "libcpu_features-filesystem_for_testing",
    ],
}

cc_defaults {
    name: "stack_line_reader-defaults",
    cflags: [
        "-DSTACK_LINE_READER_BUFFER_SIZE=1024",
    ],
}

cc_test_library {
    name: "libcpu_features-stack_line_reader",
    defaults: [
        "cpu_features-test-defaults",
        "stack_line_reader-defaults",
    ],
    srcs: [
        "src/stack_line_reader.c",
    ],
    static_libs: [
        "libcpu_features-filesystem_for_testing",
        "libcpu_features-string_view",
    ],
}

cc_test_library {
    name: "libcpu_features-stack_line_reader_for_test",
    defaults: ["cpu_features-test-defaults"],
    cflags: [
        "-DSTACK_LINE_READER_BUFFER_SIZE=16",
    ],
    srcs: [
        "src/stack_line_reader.c",
    ],
    whole_static_libs: [
        "libcpu_features-filesystem_for_testing",
        "libcpu_features-string_view",
    ],
}

cc_test_library {
    name: "libcpu_features-all_libraries",
    defaults: [
        "cpu_features-test-defaults",
        "stack_line_reader-defaults",
    ],
    whole_static_libs: [
        "libcpu_features-filesystem_for_testing",
        "libcpu_features-hwcaps_for_testing",
        "libcpu_features-stack_line_reader",
        "libcpu_features-string_view",
    ],
}

cc_test {
    name: "cpu_features-bit_utils_test",
    defaults: ["cpu_features-test-defaults"],
    srcs: [
        "test/bit_utils_test.cc",
    ],
}

cc_test {
    name: "cpu_features-string_view_test",
    defaults: ["cpu_features-test-defaults"],
    srcs: [
        "test/string_view_test.cc",
        "src/string_view.c",
    ],
    static_libs: [
        "libcpu_features-string_view",
    ],
}

cc_test {
    name: "cpu_features-stack_line_reader_test",
    defaults: [
        "cpu_features-test-defaults",
        "stack_line_reader-defaults",
    ],
    cflags: [
        // TODO: Handle unused funtions in
        // test/stack_line_reader_test.cc and remove this flag.
        "-Wno-unused-function",
    ],
    srcs: [
        "test/stack_line_reader_test.cc",
    ],
    static_libs: [
        "libcpu_features-stack_line_reader_for_test",
    ],
}

cc_test {
    name: "cpu_features-cpuinfo_test",
    defaults: [
        "cpu_features-test-defaults",
    ],
    static_libs: [
        "libcpu_features-all_libraries",
    ],
    cflags: [
        "-DSTACK_LINE_READER_BUFFER_SIZE=1024",
    ],
    arch: {
        x86: {
            cflags: [
                "-DCPU_FEATURES_MOCK_CPUID_X86",
                "-Wno-unused-variable",
            ],
            srcs: [
                "test/cpuinfo_x86_test.cc",
                "src/cpuinfo_x86.c",
            ],
        },
        x86_64: {
            cflags: [
                "-DCPU_FEATURES_MOCK_CPUID_X86",
                "-Wno-unused-variable",
            ],
            srcs: [
                "test/cpuinfo_x86_test.cc",
                "src/cpuinfo_x86.c",
            ],
        },
        arm: {
            srcs: [
                "test/cpuinfo_arm_test.cc",
                "src/cpuinfo_arm.c",
            ],
        },
        arm64: {
            cflags: [
                "-Wno-gnu-designator",
            ],
            srcs: [
                "test/cpuinfo_aarch64_test.cc",
                "src/cpuinfo_aarch64.c",
            ],
        },
    },
}