1# Copyright (c) 2013 The Chromium Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5import("//build/config/c++/c++.gni")
6
7group("linux") {
8  visibility = [ "//:optimize_gn_gen" ]
9}
10
11# This is included by reference in the //build/config/compiler config that
12# is applied to all targets. It is here to separate out the logic that is
13# Linux-only.
14config("compiler") {
15}
16
17# This is included by reference in the //build/config/compiler:runtime_library
18# config that is applied to all targets. It is here to separate out the logic
19# that is Linux-only. Please see that target for advice on what should go in
20# :runtime_library vs. :compiler.
21config("runtime_library") {
22  # Set here because OS_CHROMEOS cannot be autodetected in build_config.h like OS_LINUX and the like.
23  if (is_chromeos) {
24    defines = [ "OS_CHROMEOS" ]
25  }
26  libs = []
27  if ((!is_chromeos || default_toolchain != "//build/toolchain/cros:target") &&
28      !use_custom_libcxx) {
29    libs += [ "atomic" ]
30  }
31
32  # double framework, use prebuilt libc++.
33  if (is_double_framework) {
34    if (current_cpu == "x86") {
35      libs += [ "${asdk_libs_dir}/ndk/libcxx/linux_x86/libc++.so" ]
36    } else {
37      libs += [ "${asdk_libs_dir}/ndk/libcxx/linux_x86_64/libc++.so" ]
38    }
39  }
40}
41
42config("executable_config") {
43  cflags = [ "-fPIE" ]
44  asmflags = [ "-fPIE" ]
45  ldflags = [ "-pie" ]
46}
47
48config("x11") {
49  libs = [
50    "X11",
51    "X11-xcb",
52    "xcb",
53    "Xcomposite",
54    "Xcursor",
55    "Xdamage",
56    "Xext",
57    "Xfixes",
58    "Xi",
59    "Xrender",
60    "Xtst",
61  ]
62}
63
64# Ensures all exported symbols are added to the dynamic symbol table.  This is
65# necessary to expose Chrome's custom operator new() and operator delete() (and
66# other memory-related symbols) to libraries.  Otherwise, they might
67# (de)allocate memory on a different heap, which would spell trouble if pointers
68# to heap-allocated memory are passed over shared library boundaries.
69config("export_dynamic") {
70  ldflags = [ "-rdynamic" ]
71}
72