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.
5 // This file adds defines about the platform we're currently building on.
7 // OS_WIN / OS_MACOSX / OS_LINUX / OS_POSIX (MACOSX or LINUX)
9 // COMPILER_MSVC / COMPILER_GCC
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
14 #ifndef BUILD_BUILD_CONFIG_H_
15 #define BUILD_BUILD_CONFIG_H_
17 #if defined(__APPLE__)
18 #include <TargetConditionals.h>
21 // A set of macros to use for platform detection.
24 #elif defined(__APPLE__)
26 #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
28 #endif // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
29 #elif defined(__native_client__)
31 #elif defined(__linux__)
33 // Use TOOLKIT_GTK on linux if TOOLKIT_VIEWS isn't defined.
34 #if !defined(TOOLKIT_VIEWS)
39 #define TOOLKIT_VIEWS 1
40 #elif defined(__FreeBSD__)
43 #elif defined(__OpenBSD__)
50 #error Please add support for your platform in build/build_config.h
53 #if defined(USE_OPENSSL) && defined(USE_NSS)
54 #error Cannot use both OpenSSL and NSS
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)
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) || \
71 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID) && \
72 !defined(OS_NACL) && !defined(USE_MESSAGEPUMP_LINUX)
73 #define USE_X11 1 // Use X for graphics.
77 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(NO_TCMALLOC)
78 #define USE_TCMALLOC 1
81 // Compiler detection.
83 #define COMPILER_GCC 1
84 #elif defined(_MSC_VER)
85 #define COMPILER_MSVC 1
87 #error Please add support for your compiler in build/build_config.h
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
117 #error Please add support for your architecture in build/build_config.h
120 // Type detection for wchar_t.
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
136 #error Please add support for your compiler in build/build_config.h
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
145 #if defined(OS_ANDROID)
146 // The compiler thinks std::string::const_iterator and "const char*" are
148 #define STD_STRING_ITERATOR_IS_CHAR_POINTER
149 // The compiler thinks base::string16::const_iterator and "char16*" are
151 #define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER
154 #endif // BUILD_BUILD_CONFIG_H_