xref: /build/config/ohos/BUILD.gn

# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/config/compiler/compiler.gni")
import("//build/config/ohos/config.gni")

import("//build/config/c++/c++.gni")
import("//build/config/sanitizers/sanitizers.gni")

assert(is_ohos)

# This is included by reference in the //build/config/compiler config that
# is applied to all targets. It is here to separate out the logic that is
# ohos-only.
config("compiler") {
  cflags = [
    "-ffunction-sections",
    "-fno-short-enums",
  ]
  defines = [
    # The NDK has these things, but doesn't define the constants to say that it
    # does. Define them here instead.
    "HAVE_SYS_UIO_H",
  ]

  defines += [
    "__MUSL__",
    "_LIBCPP_HAS_MUSL_LIBC",
    "__BUILD_LINUX_WITH_CLANG",
  ]

  ldflags = [
    "-Wl,--no-undefined",
    "-Wl,--exclude-libs=libunwind_llvm.a",
    "-Wl,--exclude-libs=libc++_static.a",

    # Don't allow visible symbols from libraries that contain
    # assembly code with symbols that aren't hidden properly.
    # http://crbug.com/448386
    "-Wl,--exclude-libs=libvpx_assembly_arm.a",
  ]
  if (current_cpu == "riscv64") {
    ldflags -= [ "-Wl,--exclude-libs=libvpx_assembly_arm.a" ]
  }

  cflags += [ "--target=$abi_target" ]
  include_dirs = [ "${musl_sysroot}/usr/include/${abi_target}" ]

  ldflags += [ "--target=$abi_target" ]

  # Assign any flags set for the C compiler to asmflags so that they are sent
  # to the assembler.
  asmflags = cflags
}

# This is included by reference in the //build/config/compiler:runtime_library
# config that is applied to all targets. It is here to separate out the logic
# that is ohos-only. Please see that target for advice on what should go in
# :runtime_library vs. :compiler.
config("runtime_library") {
  cflags_cc = []

  defines = [
    "__GNU_SOURCE=1",  # Necessary for clone().
    "CHROMIUM_CXX_TWEAK_INLINES",  # Saves binary size.
  ]

  defines += [
    "__MUSL__",
    "_LIBCPP_HAS_MUSL_LIBC",
    "__BUILD_LINUX_WITH_CLANG",
  ]
  ldflags = [ "-nostdlib" ]

  libs = []

  # arm builds of libc++ starting in NDK r12 depend on unwind.
  if (current_cpu == "arm" || current_cpu == "arm64" ||
      current_cpu == "riscv64") {
    libs += [ "unwind" ]
  }

  ldflags += [
    "-L" + rebase_path("${musl_sysroot}/usr/lib/${abi_target}", root_build_dir),
    "-L" + rebase_path(
            "${clang_base_path}/lib/clang/${clang_version}/lib/${abi_target}",
            root_build_dir),
  ]
  if (current_cpu == "riscv64") {
    ldflags += [ "-Wl,--dynamic-linker,/lib/ld-musl-${musl_arch}.so.1" ]
  }

  libs += [
    rebase_path(libclang_rt_file),
    "c",
    rebase_path(libcxxabi_file),
  ]

  if (!is_llvm_build && current_cpu == "arm64") {
    libs += [ rebase_path(libgwp_asan_file) ]
  }

  if (current_cpu == "arm" && arm_version == 6) {
    libs += [ "atomic" ]
  }

  ldflags += [ "-Wl,--warn-shared-textrel" ]

  # We add this parameter to speed up link process, enable_lto_O0 default is false.
  if (!is_mac && !is_win && use_lld && enable_lto_O0) {
    ldflags += [ "-Wl,--lto-O0" ]
  }
}

config("executable_config") {
  cflags = [ "-fPIE" ]
  asmflags = [ "-fPIE" ]
  ldflags = [ "-pie" ]
}

# Used for instrumented build to generate the orderfile.
config("default_orderfile_instrumentation") {
  if (use_order_profiling) {
    cflags = [ "-finstrument-function-entry-bare" ]
    if (use_thin_lto) {
      ldflags = [ "-Wl,-u,__cyg_profile_func_enter_bare" ]
    }
  }
}

config("adlt_config") {
  ldflags = [
    "-Wl,--emit-relocs",
    "-Wl,--no-relax",
  ]
}