1// Copyright 2016 Google Inc. All rights reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package config
16
17import (
18	"strings"
19
20	"android/soong/android"
21)
22
23var (
24	linuxBionicCflags = ClangFilterUnknownCflags([]string{
25		"-fdiagnostics-color",
26
27		"-Wa,--noexecstack",
28
29		"-fPIC",
30
31		"-U_FORTIFY_SOURCE",
32		"-D_FORTIFY_SOURCE=2",
33		"-fstack-protector-strong",
34
35		// From x86_64_device
36		"-ffunction-sections",
37		"-finline-functions",
38		"-finline-limit=300",
39		"-fno-short-enums",
40		"-funswitch-loops",
41		"-funwind-tables",
42		"-fno-canonical-system-headers",
43
44		// Tell clang where the gcc toolchain is
45		"--gcc-toolchain=${LinuxBionicGccRoot}",
46
47		// This is normally in ClangExtraTargetCflags, but this is considered host
48		"-nostdlibinc",
49	})
50
51	linuxBionicLdflags = ClangFilterUnknownCflags([]string{
52		"-Wl,-z,noexecstack",
53		"-Wl,-z,relro",
54		"-Wl,-z,now",
55		"-Wl,--build-id=md5",
56		"-Wl,--warn-shared-textrel",
57		"-Wl,--fatal-warnings",
58		"-Wl,--hash-style=gnu",
59		"-Wl,--no-undefined-version",
60
61		// Use the device gcc toolchain
62		"--gcc-toolchain=${LinuxBionicGccRoot}",
63	})
64
65	linuxBionicLldflags = ClangFilterUnknownLldflags(linuxBionicLdflags)
66)
67
68func init() {
69	pctx.StaticVariable("LinuxBionicCflags", strings.Join(linuxBionicCflags, " "))
70	pctx.StaticVariable("LinuxBionicLdflags", strings.Join(linuxBionicLdflags, " "))
71	pctx.StaticVariable("LinuxBionicLldflags", strings.Join(linuxBionicLldflags, " "))
72
73	// Use the device gcc toolchain for now
74	pctx.StaticVariable("LinuxBionicGccRoot", "${X86_64GccRoot}")
75}
76
77type toolchainLinuxBionic struct {
78	toolchain64Bit
79}
80
81func (t *toolchainLinuxBionic) Name() string {
82	return "x86_64"
83}
84
85func (t *toolchainLinuxBionic) GccRoot() string {
86	return "${config.LinuxBionicGccRoot}"
87}
88
89func (t *toolchainLinuxBionic) GccTriple() string {
90	return "x86_64-linux-android"
91}
92
93func (t *toolchainLinuxBionic) GccVersion() string {
94	return "4.9"
95}
96
97func (t *toolchainLinuxBionic) IncludeFlags() string {
98	return ""
99}
100
101func (t *toolchainLinuxBionic) ClangTriple() string {
102	// TODO: we don't have a triple yet b/31393676
103	return "x86_64-linux-android"
104}
105
106func (t *toolchainLinuxBionic) ClangCflags() string {
107	return "${config.LinuxBionicCflags}"
108}
109
110func (t *toolchainLinuxBionic) ClangCppflags() string {
111	return ""
112}
113
114func (t *toolchainLinuxBionic) ClangLdflags() string {
115	return "${config.LinuxBionicLdflags}"
116}
117
118func (t *toolchainLinuxBionic) ClangLldflags() string {
119	return "${config.LinuxBionicLldflags}"
120}
121
122func (t *toolchainLinuxBionic) ToolchainClangCflags() string {
123	return "-m64 -march=x86-64" +
124		// TODO: We're not really android, but we don't have a triple yet b/31393676
125		" -U__ANDROID__"
126}
127
128func (t *toolchainLinuxBionic) ToolchainClangLdflags() string {
129	return "-m64"
130}
131
132func (t *toolchainLinuxBionic) AvailableLibraries() []string {
133	return nil
134}
135
136func (t *toolchainLinuxBionic) Bionic() bool {
137	return true
138}
139
140func (toolchainLinuxBionic) LibclangRuntimeLibraryArch() string {
141	return "x86_64"
142}
143
144var toolchainLinuxBionicSingleton Toolchain = &toolchainLinuxBionic{}
145
146func linuxBionicToolchainFactory(arch android.Arch) Toolchain {
147	return toolchainLinuxBionicSingleton
148}
149
150func init() {
151	registerToolchainFactory(android.LinuxBionic, android.X86_64, linuxBionicToolchainFactory)
152}
153