build_config.h revision 4a5e2dc747d50c653511c68ccb2cfbfb740bd5a7
1// Copyright (c) 2006-2008 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(__native_client__)
21#define OS_NACL 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// A flag derived from the above flags, used to cover GTK code in
45// both TOOLKIT_GTK and TOOLKIT_VIEWS.
46#if defined(TOOLKIT_GTK) || (defined(TOOLKIT_VIEWS) && !defined(OS_WIN))
47#define TOOLKIT_USES_GTK 1
48#endif
49
50#if defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_OPENBSD) || \
51    defined(OS_SOLARIS)
52
53#if defined(ANDROID)
54#define USE_OPENSSL 1
55#define USE_SYSTEM_ZLIB 1
56#endif
57
58#if !defined(USE_OPENSSL)
59#define USE_NSS 1  // Default to use NSS for crypto, unless OpenSSL is chosen.
60#endif
61#define USE_X11 1  // Use X for graphics.
62#endif
63
64#if defined(USE_OPENSSL) && defined(USE_NSS)
65#error Cannot use both OpenSSL and NSS
66#endif
67
68// For access to standard POSIXish features, use OS_POSIX instead of a
69// more specific macro.
70#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) || \
71<<<<<<< HEAD
72    defined(OS_OPENBSD) || defined(OS_SOLARIS) || defined(ANDROID)
73=======
74    defined(OS_OPENBSD) || defined(OS_SOLARIS) || defined(OS_NACL)
75>>>>>>> chromium.org at r66597
76#define OS_POSIX 1
77// Use base::DataPack for name/value pairs.
78#define USE_BASE_DATA_PACK 1
79#endif
80
81// Use tcmalloc
82#if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(NO_TCMALLOC)
83#define USE_TCMALLOC 1
84#endif
85
86// Use heapchecker.
87#if defined(OS_LINUX) && !defined(NO_HEAPCHECKER)
88#define USE_HEAPCHECKER 1
89#endif
90
91// Compiler detection.
92#if defined(__GNUC__)
93#define COMPILER_GCC 1
94#elif defined(_MSC_VER)
95#define COMPILER_MSVC 1
96#else
97#error Please add support for your compiler in build/build_config.h
98#endif
99
100// Processor architecture detection.  For more info on what's defined, see:
101//   http://msdn.microsoft.com/en-us/library/b0084kay.aspx
102//   http://www.agner.org/optimize/calling_conventions.pdf
103//   or with gcc, run: "echo | gcc -E -dM -"
104#if defined(_M_X64) || defined(__x86_64__)
105#define ARCH_CPU_X86_FAMILY 1
106#define ARCH_CPU_X86_64 1
107#define ARCH_CPU_64_BITS 1
108#elif defined(_M_IX86) || defined(__i386__)
109#define ARCH_CPU_X86_FAMILY 1
110#define ARCH_CPU_X86 1
111#define ARCH_CPU_32_BITS 1
112#elif defined(__ARMEL__)
113#define ARCH_CPU_ARM_FAMILY 1
114#define ARCH_CPU_ARMEL 1
115#define ARCH_CPU_32_BITS 1
116#define WCHAR_T_IS_UNSIGNED 1
117#else
118#error Please add support for your architecture in build/build_config.h
119#endif
120
121// Type detection for wchar_t.
122#if defined(OS_WIN)
123#define WCHAR_T_IS_UTF16
124#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \
125    defined(__WCHAR_MAX__) && \
126    (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff)
127#define WCHAR_T_IS_UTF32
128#elif defined(OS_POSIX) && defined(COMPILER_GCC) && \
129    defined(__WCHAR_MAX__) && \
130    (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff)
131// On Posix, we'll detect short wchar_t, but projects aren't guaranteed to
132// compile in this mode (in particular, Chrome doesn't). This is intended for
133// other projects using base who manage their own dependencies and make sure
134// short wchar works for them.
135#define WCHAR_T_IS_UTF16
136#else
137#error Please add support for your compiler in build/build_config.h
138#endif
139
140#endif  // BUILD_BUILD_CONFIG_H_
141