xref: /aosp_15_r20/external/llvm-libc/Android.bp (revision 71db0c75aadcf003ffe3238005f61d7618a3fead)

// https://ci.android.com/builds/latest/branches/aosp-build-tools/targets/linux/view/soong_build.html

cc_defaults {
    name: "llvmlibc_defaults",
    defaults: [
        // b/379681564: Bionic's dependencies all must support linux-bionic,
        // which is not an enabled target by default.
        "linux_bionic_supported",
    ],
    cppflags: [
        // Necessary to build.
        "-DLIBC_NAMESPACE=llvmlibc",
    ],
    arch: {
        // TODO: https://github.com/llvm/llvm-project/issues/93738
        // llvm-libc does not (yet) support --target=armv7a-linux -mthumb
        // Build in ARM mode, but perhaps revisit this in the future.
        arm: {
            instruction_set: "arm",
        },
    },
}

cc_library_static {
    name: "llvmlibc",
    defaults: ["llvmlibc_defaults"],
    visibility: [
        "//bionic/libc",
    ],
    include_dirs: [
        "external/llvm-libc",
    ],
    srcs: [
        "src/stdlib/bsearch.cpp",
        "src/string/memrchr.cpp",
        "src/string/strlcat.cpp",
        "src/string/strlcpy.cpp",
    ],
    cppflags: [
        // Necessary for non-namespaced exports.
        "-DLIBC_COPT_PUBLIC_PACKAGING",
        // TODO: remove when https://github.com/llvm/llvm-project/pull/116686 is
        // integrated.
        "-DLLVM_LIBC_FUNCTION_ATTR=__attribute__((visibility(\"default\")))",
    ],
    // No C++ runtime.
    stl: "none",
    // No crt_begin and crt_end.
    nocrt: true,
    // Needs to be unset from the default value in order to avoid creating a
    // cyclic dependency between llvm-libc and bionic's libc.
    system_shared_libs: [],

    // Bionic's libc's dependencies must have these set, or the build will fail
    // due to missing a "ramdisk", "vendor_ramdisk", and "recovery" variants.
    native_bridge_supported: true,
    ramdisk_available: true,
    recovery_available: true,
    vendor_ramdisk_available: true,

    // Bionic's dependencies must also set this.
    apex_available: ["com.android.runtime"],

    // When llvm-libc includes <stdlib.h>, use bionic's headers for these.
    header_libs: ["libc_headers"],

    // TODO(b/378117947): push these into non-arch-specific `srcs` as llvm-libc
    // functions are rolled out.
    arch: {
        arm64: {
            // These have optimized baseline and vectorized impls from
            // arm-optimized-routines, and aren't yet heavily optimized by
            // llvm-libc.
            exclude_srcs: [
                "src/string/memrchr.cpp",
            ],
        },
        x86_64: {
            srcs: [
                "src/string/memchr.cpp",
                "src/string/strchr.cpp",
                "src/string/strchrnul.cpp",
                "src/string/strnlen.cpp",
                "src/string/strrchr.cpp",
            ],
        },
    },
}

cc_test_library {
    name: "llvmlibc_test_harness",
    defaults: ["llvmlibc_defaults"],
    srcs: [
        "test/UnitTest/LibcTest.cpp",
        "test/UnitTest/TestLogger.cpp",
        "test/UnitTest/LibcTestMain.cpp",
    ],
}

cc_defaults {
    name: "llvmlibc_test_defaults",
    defaults: ["llvmlibc_defaults"],
    static_libs: [
        "llvmlibc",
        "llvmlibc_test_harness",
    ],
    // Do not try to link against gtest. llvm-libc has its own pseudo-gtest
    // framework.
    gtest: false,
    // Needed to avoid the diagnostic:
    // WARNING: Please add {test name} to either suite:
    // ['device-tests', 'general-tests'] for this TEST_MAPPING file to work
    // with TreeHugger.
    test_suites: ["device-tests"],
}

cc_test {
    // TODO: rename test to simply llvmlibc_tests. Needs to go through a post
    // submit cycle before can be renamed for presubmit.
    name: "llvmlibc_stdlib_bsearch_test",
    defaults: ["llvmlibc_test_defaults"],
    srcs: [
        "test/src/stdlib/bsearch_test.cpp",
        "test/src/string/memrchr_test.cpp",
        "test/src/string/strlcat_test.cpp",
        "test/src/string/strlcpy_test.cpp",
    ],
    arch: {
        arm64: {
            // Match exclusions in ':llvmlibc' for arm64.
            exclude_srcs: [
                "test/src/string/memrchr_test.cpp",
            ],
        },
        x86_64: {
            // TODO(b/378117947): push these into non-arch-specific `srcs` as
            // llvm-libc functions are rolled out.
            srcs: [
                "test/src/string/memchr_test.cpp",
                "test/src/string/strchr_test.cpp",
                "test/src/string/strchrnul_test.cpp",
                "test/src/string/strnlen_test.cpp",
                "test/src/string/strrchr_test.cpp",
            ],
        },
    },
}