base/allocator/BUILD.gn

# Copyright 2013 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//base/allocator/allocator.gni")
import("//base/allocator/partition_allocator/partition_alloc.gni")
import("//build/buildflag_header.gni")
import("//build/config/compiler/compiler.gni")
import("//build/config/dcheck_always_on.gni")

buildflag_header("buildflags") {
  header = "buildflags.h"

  assert(use_allocator_shim || !use_partition_alloc_as_malloc,
         "PartitionAlloc-Everywhere requires the allocator shim")

  flags = [
    "USE_ALLOCATOR_SHIM=$use_allocator_shim",

    "USE_PARTITION_ALLOC_AS_GWP_ASAN_STORE=$enable_backup_ref_ptr_support",

    "USE_ALLOCATION_EVENT_DISPATCHER=$use_allocation_event_dispatcher",
  ]
}

if (is_apple) {
  source_set("early_zone_registration_mac") {
    sources = [
      "early_zone_registration_mac.cc",
      "early_zone_registration_mac.h",
    ]

    deps = [
      ":buildflags",
      "//base/allocator/partition_allocator:buildflags",
    ]
  }
}

# Used to shim malloc symbols on Android. see //base/allocator/README.md.
config("wrap_malloc_symbols") {
  ldflags = [
    "-Wl,-wrap,calloc",
    "-Wl,-wrap,free",
    "-Wl,-wrap,malloc",
    "-Wl,-wrap,memalign",
    "-Wl,-wrap,posix_memalign",
    "-Wl,-wrap,pvalloc",
    "-Wl,-wrap,realloc",
    "-Wl,-wrap,valloc",

    # Not allocating memory, but part of the API
    "-Wl,-wrap,malloc_usable_size",

    # <stdlib.h> functions
    "-Wl,-wrap,realpath",

    # <string.h> functions
    "-Wl,-wrap,strdup",
    "-Wl,-wrap,strndup",

    # <unistd.h> functions
    "-Wl,-wrap,getcwd",

    # <stdio.h> functions
    "-Wl,-wrap,asprintf",
    "-Wl,-wrap,vasprintf",
  ]
}

config("mac_no_default_new_delete_symbols") {
  if (!is_component_build) {
    # This is already set when we compile libc++, see
    # buildtools/third_party/libc++/BUILD.gn. But it needs to be set here as well,
    # since the shim defines the symbols, to prevent them being exported.
    cflags = [ "-fvisibility-global-new-delete-hidden" ]
  }
}