build/unification/zn_build/public/gn/config/BUILD.gn

# Copyright 2019 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

config("visibility_hidden") {
  cflags = [ "-fvisibility=hidden" ]
  cflags_cc = [ "-fvisibility-inlines-hidden" ]
}

config("static-libc++") {
  if (is_fuchsia) {
    configs = [ "//build/config/fuchsia:static_cpp_standard_library" ]
  }
}

config("default_include_dirs") {
  # Note: this include directory is also provided by the sysroot, but it is
  # needed when compiling some libraries in the host toolchain.
  include_dirs = [ "//zircon/system/public" ]
}

# These warnings were picked up from the ZN build.
# TODO(3203): that list should converge with regular compilation settings in the GN build.
config("default_warnings") {
  cflags = [
    "-Wall",
    "-Wextra",
    "-Wno-multichar",
    "-Wno-unused-parameter",
    "-Wno-unused-function",
    "-Werror=unused-label",
    "-Werror=return-type",
    "-Wno-address-of-packed-member",
  ]
  cflags_c = [
    "-Werror=implicit-function-declaration",
    "-Wstrict-prototypes",
    "-Wwrite-strings",
    "-Wno-absolute-value",
  ]
  cflags_cc = [
    "-Wconversion",
    "-Wno-sign-conversion",
    "-Wextra-semi",
  ]
}

config("user") {
  defines = [ "_ALL_SOURCE" ]
}

config("freestanding") {
  cflags = [ "-ffreestanding" ]

  # In Clang -fasynchronous-unwind-tables is the default for *-fuchsia
  # targets.  But -ffreestanding defeats that (in target-independent logic
  # in the Clang driver).  So add it back explicitly.  For GCC, it's
  # already added explicitly in :compiler regardless so don't double it.
  cflags += [ "-fasynchronous-unwind-tables" ]

  ldflags = cflags
}

config("no_stack_protector") {
  cflags = [ "-fno-stack-protector" ]
}

config("no_sanitizers") {
  cflags = [
    "-fno-sanitize=all",
    "-fsanitize-coverage=0",
  ]
  configs = [ ":no_stack_protector" ]
}

config("no-shadow-call-stack") {
  if (current_cpu == "arm64") {
    cflags = [ "-fno-sanitize=shadow-call-stack" ]
  }
}

# TODO(TC-539) Remove this once the warning with fit::variant/fit::optional is addressed.
config("no_maybe_uninitialized") {
}

config("no_safestack") {
  cflags = [ "-fno-sanitize=safe-stack" ]
  configs = [ ":no_stack_protector" ]
}