build_config.h revision 5821806d5e7f356e8fa4b058a389a808ea183019
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//  Compiler:
9//    COMPILER_MSVC / COMPILER_GCC
10//  Processor:
11//    ARCH_CPU_X86 / ARCH_CPU_X86_64 / ARCH_CPU_X86_FAMILY (X86 or X86_64)
12//    ARCH_CPU_32_BITS / ARCH_CPU_64_BITS
13
14#ifndef BUILD_BUILD_CONFIG_H_
15#define BUILD_BUILD_CONFIG_H_
16
17#if defined(__APPLE__)
18#include <TargetConditionals.h>
19#endif
20
21// A set of macros to use for platform detection.
22#if defined(__APPLE__)
23#define OS_MACOSX 1
24#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
25#define OS_IOS 1
26#endif  // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
27#elif defined(ANDROID)
28#define OS_ANDROID 1
29#elif defined(__native_client__)
30#define OS_NACL 1
31#elif defined(__linux__)
32#define OS_LINUX 1
33// Use TOOLKIT_GTK on linux if TOOLKIT_VIEWS isn't defined.
34#if !defined(TOOLKIT_VIEWS)
35#define TOOLKIT_GTK
36#endif
37#elif defined(_WIN32)
38#define OS_WIN 1
39#define TOOLKIT_VIEWS 1
40#elif defined(__FreeBSD__)
41#define OS_FREEBSD 1
42#define TOOLKIT_GTK
43#elif defined(__OpenBSD__)
44#define OS_OPENBSD 1
45#define TOOLKIT_GTK
46#elif defined(__sun)
47#define OS_SOLARIS 1
48#define TOOLKIT_GTK
49#else
50#error Please add support for your platform in build/build_config.h
51#endif
52
53#if defined(USE_OPENSSL) && defined(USE_NSS)
54#error Cannot use both OpenSSL and NSS
55#endif
56
57// For access to standard BSD features, use OS_BSD instead of a
58// more specific macro.
59#if defined(OS_FREEBSD) || defined(OS_OPENBSD)
60#define OS_BSD 1
61#endif
62
63// For access to standard POSIXish features, use OS_POSIX instead of a
64// more specific macro.
65#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) ||     \
66    defined(OS_OPENBSD) || defined(OS_SOLARIS) || defined(OS_ANDROID) ||  \
67    defined(OS_NACL)
68#define OS_POSIX 1
69#endif
70
71#if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID) && \
72    !defined(OS_NACL)
73#define USE_X11 1  // Use X for graphics.
74#endif
75
76// Use tcmalloc
77#if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(NO_TCMALLOC)
78#define USE_TCMALLOC 1
79#endif
80
81// Compiler detection.
82#if defined(__GNUC__)
83#define COMPILER_GCC 1
84#elif defined(_MSC_VER)
85#define COMPILER_MSVC 1
86#else
87#error Please add support for your compiler in build/build_config.h
88#endif
89
90// Processor architecture detection.  For more info on what's defined, see:
91//   http://msdn.microsoft.com/en-us/library/b0084kay.aspx
92//   http://www.agner.org/optimize/calling_conventions.pdf
93//   or with gcc, run: "echo | gcc -E -dM -"
94#if defined(_M_X64) || defined(__x86_64__)
95#define ARCH_CPU_X86_FAMILY 1
96#define ARCH_CPU_X86_64 1
97#define ARCH_CPU_64_BITS 1
98#define ARCH_CPU_LITTLE_ENDIAN 1
99#elif defined(_M_IX86) || defined(__i386__)
100#define ARCH_CPU_X86_FAMILY 1
101#define ARCH_CPU_X86 1
102#define ARCH_CPU_32_BITS 1
103#define ARCH_CPU_LITTLE_ENDIAN 1
104#elif defined(__ARMEL__)
105#define ARCH_CPU_ARM_FAMILY 1
106#define ARCH_CPU_ARMEL 1
107#define ARCH_CPU_32_BITS 1
108#define ARCH_CPU_LITTLE_ENDIAN 1
109#elif defined(__pnacl__)
110#define ARCH_CPU_32_BITS 1
111#elif defined(__MIPSEL__)
112#define ARCH_CPU_MIPS_FAMILY 1
113#define ARCH_CPU_MIPSEL 1
114#define ARCH_CPU_32_BITS 1
115#define ARCH_CPU_LITTLE_ENDIAN 1
116#else
117#error Please add support for your architecture in build/build_config.h
118#endif
119
120// Type detection for wchar_t.
121#if defined(OS_WIN)
122#define WCHAR_T_IS_UTF16
123#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \
124    defined(__WCHAR_MAX__) && \
125    (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff)
126#define WCHAR_T_IS_UTF32
127#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \
128    defined(__WCHAR_MAX__) && \
129    (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff)
130// On Posix, we'll detect short wchar_t, but projects aren't guaranteed to
131// compile in this mode (in particular, Chrome doesn't). This is intended for
132// other projects using base who manage their own dependencies and make sure
133// short wchar works for them.
134#define WCHAR_T_IS_UTF16
135#else
136#error Please add support for your compiler in build/build_config.h
137#endif
138
139#if defined(__ARMEL__) && !defined(OS_IOS)
140#define WCHAR_T_IS_UNSIGNED 1
141#elif defined(__MIPSEL__)
142#define WCHAR_T_IS_UNSIGNED 0
143#endif
144
145#if defined(OS_ANDROID)
146// The compiler thinks std::string::const_iterator and "const char*" are
147// equivalent types.
148#define STD_STRING_ITERATOR_IS_CHAR_POINTER
149// The compiler thinks base::string16::const_iterator and "char16*" are
150// equivalent types.
151#define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER
152#endif
153
154#endif  // BUILD_BUILD_CONFIG_H_
155