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// A set of macros to use for platform detection.
18#if defined(__APPLE__)
19#define OS_MACOSX 1
20#elif defined(ANDROID)
21#define OS_ANDROID 1
22#elif defined(__linux__)
23#define OS_LINUX 1
24// Use TOOLKIT_GTK on linux if TOOLKIT_VIEWS isn't defined.
25#if !defined(TOOLKIT_VIEWS)
26#define TOOLKIT_GTK
27#endif
28#elif defined(_WIN32)
29#define OS_WIN 1
30#define TOOLKIT_VIEWS 1
31#elif defined(__FreeBSD__)
32#define OS_FREEBSD 1
33#define TOOLKIT_GTK
34#elif defined(__OpenBSD__)
35#define OS_OPENBSD 1
36#define TOOLKIT_GTK
37#elif defined(__sun)
38#define OS_SOLARIS 1
39#define TOOLKIT_GTK
40#else
41#error Please add support for your platform in build/build_config.h
42#endif
43
44#if defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_OPENBSD) || \
45    defined(OS_ANDROID)
46#define USE_NSS 1  // Use NSS for crypto.
47#ifndef OS_ANDROID
48#define USE_X11 1  // Use X for graphics.
49#endif
50#endif
51
52// For access to standard POSIXish features, use OS_POSIX instead of a
53// more specific macro.
54#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) || \
55    defined(OS_OPENBSD) || defined(OS_SOLARIS) || defined(OS_ANDROID)
56#define OS_POSIX 1
57// Use base::DataPack for name/value pairs.
58#define USE_BASE_DATA_PACK 1
59#endif
60
61// Use tcmalloc
62#if defined(OS_WIN) && ! defined(NO_TCMALLOC)
63#define USE_TCMALLOC 1
64#endif
65
66// Compiler detection.
67#if defined(__GNUC__)
68#define COMPILER_GCC 1
69#elif defined(_MSC_VER)
70#define COMPILER_MSVC 1
71#else
72#error Please add support for your compiler in build/build_config.h
73#endif
74
75// Processor architecture detection.  For more info on what's defined, see:
76//   http://msdn.microsoft.com/en-us/library/b0084kay.aspx
77//   http://www.agner.org/optimize/calling_conventions.pdf
78//   or with gcc, run: "echo | gcc -E -dM -"
79#if defined(_M_X64) || defined(__x86_64__)
80#define ARCH_CPU_X86_FAMILY 1
81#define ARCH_CPU_X86_64 1
82#define ARCH_CPU_64_BITS 1
83#elif defined(_M_IX86) || defined(__i386__)
84#define ARCH_CPU_X86_FAMILY 1
85#define ARCH_CPU_X86 1
86#define ARCH_CPU_32_BITS 1
87#elif defined(__ARMEL__)
88#define ARCH_CPU_ARM_FAMILY 1
89#define ARCH_CPU_ARMEL 1
90#define ARCH_CPU_32_BITS 1
91#define WCHAR_T_IS_UNSIGNED 1
92#elif defined(__MIPSEL__)
93#define ARCH_CPU_MIPS_FAMILY 1
94#define ARCH_CPU_MIPSEL 1
95#define ARCH_CPU_32_BITS 1
96#define WCHAR_T_IS_UNSIGNED 0
97#else
98#error Please add support for your architecture in build/build_config.h
99#endif
100
101// Type detection for wchar_t.
102#if defined(OS_WIN)
103#define WCHAR_T_IS_UTF16
104#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \
105    defined(__WCHAR_MAX__) && \
106    (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff)
107#define WCHAR_T_IS_UTF32
108#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \
109    defined(__WCHAR_MAX__) && \
110    (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff)
111// On Posix, we'll detect short wchar_t, but projects aren't guaranteed to
112// compile in this mode (in particular, Chrome doesn't). This is intended for
113// other projects using base who manage their own dependencies and make sure
114// short wchar works for them.
115#define WCHAR_T_IS_UTF16
116#else
117#error Please add support for your compiler in build/build_config.h
118#endif
119
120#endif  // BUILD_BUILD_CONFIG_H_
121