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//
// Copyright (C) 2020 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.
//
// We introduce this namespace so that native bridge guest libraries are built
// only for targets that explicitly use this namespace via PRODUCT_SOONG_NAMESPACES
// and checkbuild.
soong_namespace {
}
package {
default_applicable_licenses: ["Android-Apache-2.0"],
}
cc_library {
defaults: [
"native_bridge_stub_library_defaults",
// Definitions come from bionic/libc/Android.bp that force
// the usage of the correct native allocator.
"libc_native_allocator_defaults",
],
name: "libnative_bridge_guest_libc",
overrides: ["libc"],
stem: "libc",
srcs: [
":libc_sources_shared",
"__cxa_thread_atexit_impl.cpp",
"__libc_add_main_thread.cpp",
"__libc_init_scudo.cpp",
"__libc_set_target_sdk_version.cpp",
"exit.c",
"malloc_init.cpp",
],
include_dirs: [
"bionic/libc",
"bionic/libc/arch-common/bionic",
"bionic/libc/async_safe/include",
"bionic/libc/bionic",
"bionic/libc/stdio",
"bionic/libstdc++/include",
],
cflags: [
"-D_LIBC=1",
"-fno-emulated-tls", // Required for GWP-Asan.
],
product_variables: {
platform_sdk_version: {
asflags: ["-DPLATFORM_SDK_VERSION=%d"],
cflags: ["-DPLATFORM_SDK_VERSION=%d"],
},
},
arch: {
arm: {
srcs: [
":libc_sources_shared_arm",
"stubs_arm.cpp",
],
cflags: [
"-DCRT_LEGACY_WORKAROUND",
],
version_script: ":libc.arm.map",
no_libcrt: true,
shared: {
// For backwards-compatibility, some arm32 builtins are exported from libc.so.
static_libs: ["libclang_rt.builtins-exported"],
},
// Arm 32 bit does not produce complete exidx unwind information
// so keep the .debug_frame which is relatively small and does
// include needed unwind information.
// See b/132992102 for details.
strip: {
keep_symbols_and_debug_frame: true,
},
},
arm64: {
srcs: ["stubs_arm64.cpp"],
version_script: ":libc.arm64.map",
// Leave the symbols in the shared library so that stack unwinders can produce
// meaningful name resolution.
strip: {
keep_symbols: true,
},
}
},
nocrt: true,
required: ["tzdata"],
whole_static_libs: [
"gwp_asan",
"libc_init_dynamic",
"libc_common_shared",
"libunwind-exported",
],
shared_libs: [
"ld-android",
"libdl",
],
static_libs: [
"libdl_android",
],
system_shared_libs: [],
stl: "none",
strip: {
keep_symbols: true,
},
sanitize: {
never: true,
},
// lld complains about duplicate symbols in libcrt and libgcc. Suppress the
// warning since this is intended right now.
// Bug: 117558759
ldflags: ["-Wl,-z,muldefs"],
}
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