1 | // Copyright (c) 2012 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 | |
5 | // This file adds defines about the platform we're currently building on. |
6 | // Operating System: |
7 | // OS_WIN / OS_MACOSX / OS_LINUX / OS_POSIX (MACOSX or LINUX) / |
8 | // OS_NACL (NACL_SFI or NACL_NONSFI) / OS_NACL_SFI / OS_NACL_NONSFI |
9 | // OS_CHROMEOS is set by the build system |
10 | // Compiler: |
11 | // COMPILER_MSVC / COMPILER_GCC |
12 | // Processor: |
13 | // ARCH_CPU_X86 / ARCH_CPU_X86_64 / ARCH_CPU_X86_FAMILY (X86 or X86_64) |
14 | // ARCH_CPU_32_BITS / ARCH_CPU_64_BITS |
15 | |
16 | #ifndef BUILD_BUILD_CONFIG_H_ |
17 | #define BUILD_BUILD_CONFIG_H_ |
18 | |
19 | // A set of macros to use for platform detection. |
20 | #if defined(__native_client__) |
21 | // __native_client__ must be first, so that other OS_ defines are not set. |
22 | #define OS_NACL 1 |
23 | // OS_NACL comes in two sandboxing technology flavors, SFI or Non-SFI. |
24 | // PNaCl toolchain defines __native_client_nonsfi__ macro in Non-SFI build |
25 | // mode, while it does not in SFI build mode. |
26 | #if defined(__native_client_nonsfi__) |
27 | #define OS_NACL_NONSFI |
28 | #else |
29 | #define OS_NACL_SFI |
30 | #endif |
31 | #elif defined(ANDROID) |
32 | #define OS_ANDROID 1 |
33 | #elif defined(__APPLE__) |
34 | // only include TargetConditions after testing ANDROID as some android builds |
35 | // on mac don't have this header available and it's not needed unless the target |
36 | // is really mac/ios. |
37 | #include <TargetConditionals.h> |
38 | #define OS_MACOSX 1 |
39 | #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE |
40 | #define OS_IOS 1 |
41 | #endif // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE |
42 | #elif defined(__linux__) |
43 | #define OS_LINUX 1 |
44 | // include a system header to pull in features.h for glibc/uclibc macros. |
45 | #include <unistd.h> |
46 | #if defined(__GLIBC__) && !defined(__UCLIBC__) |
47 | // we really are using glibc, not uClibc pretending to be glibc |
48 | #define LIBC_GLIBC 1 |
49 | #endif |
50 | #elif defined(_WIN32) |
51 | #define OS_WIN 1 |
52 | #elif defined(__Fuchsia__) |
53 | #define OS_FUCHSIA 1 |
54 | #elif defined(__FreeBSD__) |
55 | #define OS_FREEBSD 1 |
56 | #elif defined(__NetBSD__) |
57 | #define OS_NETBSD 1 |
58 | #elif defined(__OpenBSD__) |
59 | #define OS_OPENBSD 1 |
60 | #elif defined(__sun) |
61 | #define OS_SOLARIS 1 |
62 | #elif defined(__QNXNTO__) |
63 | #define OS_QNX 1 |
64 | #elif defined(_AIX) |
65 | #define OS_AIX 1 |
66 | #elif defined(__asmjs__) |
67 | #define OS_ASMJS |
68 | #else |
69 | #error Please add support for your platform in build/build_config.h |
70 | #endif |
71 | // NOTE: Adding a new port? Please follow |
72 | // https://chromium.googlesource.com/chromium/src/+/master/docs/new_port_policy.md |
73 | |
74 | // For access to standard BSD features, use OS_BSD instead of a |
75 | // more specific macro. |
76 | #if defined(OS_FREEBSD) || defined(OS_NETBSD) || defined(OS_OPENBSD) |
77 | #define OS_BSD 1 |
78 | #endif |
79 | |
80 | // For access to standard POSIXish features, use OS_POSIX instead of a |
81 | // more specific macro. |
82 | #if defined(OS_AIX) || defined(OS_ANDROID) || defined(OS_ASMJS) || \ |
83 | defined(OS_FREEBSD) || defined(OS_LINUX) || defined(OS_MACOSX) || \ |
84 | defined(OS_NACL) || defined(OS_NETBSD) || defined(OS_OPENBSD) || \ |
85 | defined(OS_QNX) || defined(OS_SOLARIS) |
86 | #define OS_POSIX 1 |
87 | #endif |
88 | |
89 | // Use tcmalloc |
90 | #if (defined(OS_WIN) || defined(OS_LINUX) || defined(OS_ANDROID)) && \ |
91 | !defined(NO_TCMALLOC) |
92 | #define USE_TCMALLOC 1 |
93 | #endif |
94 | |
95 | // Compiler detection. |
96 | #if defined(__GNUC__) |
97 | #define COMPILER_GCC 1 |
98 | #elif defined(_MSC_VER) |
99 | #define COMPILER_MSVC 1 |
100 | #else |
101 | #error Please add support for your compiler in build/build_config.h |
102 | #endif |
103 | |
104 | // Processor architecture detection. For more info on what's defined, see: |
105 | // http://msdn.microsoft.com/en-us/library/b0084kay.aspx |
106 | // http://www.agner.org/optimize/calling_conventions.pdf |
107 | // or with gcc, run: "echo | gcc -E -dM -" |
108 | #if defined(_M_X64) || defined(__x86_64__) |
109 | #define ARCH_CPU_X86_FAMILY 1 |
110 | #define ARCH_CPU_X86_64 1 |
111 | #define ARCH_CPU_64_BITS 1 |
112 | #define ARCH_CPU_LITTLE_ENDIAN 1 |
113 | #elif defined(_M_IX86) || defined(__i386__) |
114 | #define ARCH_CPU_X86_FAMILY 1 |
115 | #define ARCH_CPU_X86 1 |
116 | #define ARCH_CPU_32_BITS 1 |
117 | #define ARCH_CPU_LITTLE_ENDIAN 1 |
118 | #elif defined(__s390x__) |
119 | #define ARCH_CPU_S390_FAMILY 1 |
120 | #define ARCH_CPU_S390X 1 |
121 | #define ARCH_CPU_64_BITS 1 |
122 | #define ARCH_CPU_BIG_ENDIAN 1 |
123 | #elif defined(__s390__) |
124 | #define ARCH_CPU_S390_FAMILY 1 |
125 | #define ARCH_CPU_S390 1 |
126 | #define ARCH_CPU_31_BITS 1 |
127 | #define ARCH_CPU_BIG_ENDIAN 1 |
128 | #elif (defined(__PPC64__) || defined(__PPC__)) && defined(__BIG_ENDIAN__) |
129 | #define ARCH_CPU_PPC64_FAMILY 1 |
130 | #define ARCH_CPU_PPC64 1 |
131 | #define ARCH_CPU_64_BITS 1 |
132 | #define ARCH_CPU_BIG_ENDIAN 1 |
133 | #elif defined(__PPC64__) |
134 | #define ARCH_CPU_PPC64_FAMILY 1 |
135 | #define ARCH_CPU_PPC64 1 |
136 | #define ARCH_CPU_64_BITS 1 |
137 | #define ARCH_CPU_LITTLE_ENDIAN 1 |
138 | #elif defined(__ARMEL__) |
139 | #define ARCH_CPU_ARM_FAMILY 1 |
140 | #define ARCH_CPU_ARMEL 1 |
141 | #define ARCH_CPU_32_BITS 1 |
142 | #define ARCH_CPU_LITTLE_ENDIAN 1 |
143 | #elif defined(__aarch64__) || defined(_M_ARM64) |
144 | #define ARCH_CPU_ARM_FAMILY 1 |
145 | #define ARCH_CPU_ARM64 1 |
146 | #define ARCH_CPU_64_BITS 1 |
147 | #define ARCH_CPU_LITTLE_ENDIAN 1 |
148 | #elif defined(__pnacl__) || defined(__asmjs__) |
149 | #define ARCH_CPU_32_BITS 1 |
150 | #define ARCH_CPU_LITTLE_ENDIAN 1 |
151 | #elif defined(__MIPSEL__) |
152 | #if defined(__LP64__) |
153 | #define ARCH_CPU_MIPS_FAMILY 1 |
154 | #define ARCH_CPU_MIPS64EL 1 |
155 | #define ARCH_CPU_64_BITS 1 |
156 | #define ARCH_CPU_LITTLE_ENDIAN 1 |
157 | #else |
158 | #define ARCH_CPU_MIPS_FAMILY 1 |
159 | #define ARCH_CPU_MIPSEL 1 |
160 | #define ARCH_CPU_32_BITS 1 |
161 | #define ARCH_CPU_LITTLE_ENDIAN 1 |
162 | #endif |
163 | #elif defined(__MIPSEB__) |
164 | #if defined(__LP64__) |
165 | #define ARCH_CPU_MIPS_FAMILY 1 |
166 | #define ARCH_CPU_MIPS64 1 |
167 | #define ARCH_CPU_64_BITS 1 |
168 | #define ARCH_CPU_BIG_ENDIAN 1 |
169 | #else |
170 | #define ARCH_CPU_MIPS_FAMILY 1 |
171 | #define ARCH_CPU_MIPS 1 |
172 | #define ARCH_CPU_32_BITS 1 |
173 | #define ARCH_CPU_BIG_ENDIAN 1 |
174 | #endif |
175 | #else |
176 | #error Please add support for your architecture in build/build_config.h |
177 | #endif |
178 | |
179 | // Type detection for wchar_t. |
180 | #if defined(OS_WIN) |
181 | #define WCHAR_T_IS_UTF16 |
182 | #elif defined(OS_FUCHSIA) |
183 | #define WCHAR_T_IS_UTF32 |
184 | #elif defined(OS_POSIX) && defined(COMPILER_GCC) && defined(__WCHAR_MAX__) && \ |
185 | (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff) |
186 | #define WCHAR_T_IS_UTF32 |
187 | #elif defined(OS_POSIX) && defined(COMPILER_GCC) && defined(__WCHAR_MAX__) && \ |
188 | (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff) |
189 | // On Posix, we'll detect short wchar_t, but projects aren't guaranteed to |
190 | // compile in this mode (in particular, Chrome doesn't). This is intended for |
191 | // other projects using base who manage their own dependencies and make sure |
192 | // short wchar works for them. |
193 | #define WCHAR_T_IS_UTF16 |
194 | #else |
195 | #error Please add support for your compiler in build/build_config.h |
196 | #endif |
197 | |
198 | #if defined(OS_ANDROID) |
199 | // The compiler thinks std::string::const_iterator and "const char*" are |
200 | // equivalent types. |
201 | #define STD_STRING_ITERATOR_IS_CHAR_POINTER |
202 | // The compiler thinks base::string16::const_iterator and "char16*" are |
203 | // equivalent types. |
204 | #define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER |
205 | #endif |
206 | |
207 | #endif // BUILD_BUILD_CONFIG_H_ |
208 | |