build/build_config.h

   1 // Copyright (c) 2011 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(__native_client__)
  23 #define OS_NACL 1
  24 #elif defined(__linux__)
  25 #define OS_LINUX 1
  26 // Use TOOLKIT_GTK on linux if TOOLKIT_VIEWS isn't defined.
  27 #if !defined(TOOLKIT_VIEWS)
  28 #define TOOLKIT_GTK
  29 #endif
  30 #elif defined(_WIN32)
  31 #define OS_WIN 1
  32 #define TOOLKIT_VIEWS 1
  33 #elif defined(__FreeBSD__)
  34 #define OS_FREEBSD 1
  35 #define TOOLKIT_GTK
  36 #elif defined(__OpenBSD__)
  37 #define OS_OPENBSD 1
  38 #define TOOLKIT_GTK
  39 #elif defined(__sun)
  40 #define OS_SOLARIS 1
  41 #define TOOLKIT_GTK
  42 #else
  43 #error Please add support for your platform in build/build_config.h
  44 #endif
  45
  46 #if defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_OPENBSD) || \
  47     defined(OS_SOLARIS) || defined(OS_ANDROID)
  48 #if !defined(USE_OPENSSL)
  49 #define USE_NSS 1  // Default to use NSS for crypto, unless OpenSSL is chosen.
  50 #endif
  51 #ifndef OS_ANDROID
  52 #define USE_X11 1  // Use X for graphics.
  53 #endif
  54 #endif
  55
  56 #if defined(USE_OPENSSL) && defined(USE_NSS)
  57 #error Cannot use both OpenSSL and NSS
  58 #endif
  59
  60 // For access to standard POSIXish features, use OS_POSIX instead of a
  61 // more specific macro.
  62 #if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) ||     \
  63     defined(OS_OPENBSD) || defined(OS_SOLARIS) || defined(OS_ANDROID) ||  \
  64     defined(OS_NACL)
  65 #define OS_POSIX 1
  66 #endif
  67
  68 // Use tcmalloc
  69 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(NO_TCMALLOC)
  70 #define USE_TCMALLOC 1
  71 #endif
  72
  73 // Use heapchecker.
  74 #if defined(OS_LINUX) && !defined(NO_HEAPCHECKER)
  75 #define USE_HEAPCHECKER 1
  76 #endif
  77
  78 // Compiler detection.
  79 #if defined(__GNUC__)
  80 #define COMPILER_GCC 1
  81 #elif defined(_MSC_VER)
  82 #define COMPILER_MSVC 1
  83 #else
  84 #error Please add support for your compiler in build/build_config.h
  85 #endif
  86
  87 // Processor architecture detection.  For more info on what's defined, see:
  88 //   http://msdn.microsoft.com/en-us/library/b0084kay.aspx
  89 //   http://www.agner.org/optimize/calling_conventions.pdf
  90 //   or with gcc, run: "echo | gcc -E -dM -"
  91 #if defined(_M_X64) || defined(__x86_64__)
  92 #define ARCH_CPU_X86_FAMILY 1
  93 #define ARCH_CPU_X86_64 1
  94 #define ARCH_CPU_64_BITS 1
  95 #define ARCH_CPU_LITTLE_ENDIAN 1
  96 #elif defined(_M_IX86) || defined(__i386__)
  97 #define ARCH_CPU_X86_FAMILY 1
  98 #define ARCH_CPU_X86 1
  99 #define ARCH_CPU_32_BITS 1
 100 #define ARCH_CPU_LITTLE_ENDIAN 1
 101 #elif defined(__ARMEL__)
 102 #define ARCH_CPU_ARM_FAMILY 1
 103 #define ARCH_CPU_ARMEL 1
 104 #define ARCH_CPU_32_BITS 1
 105 #define ARCH_CPU_LITTLE_ENDIAN 1
 106 #define WCHAR_T_IS_UNSIGNED 1
 107 #elif defined(__pnacl__)
 108 #define ARCH_CPU_32_BITS 1
 109 #else
 110 #error Please add support for your architecture in build/build_config.h
 111 #endif
 112
 113 // Type detection for wchar_t.
 114 #if defined(OS_WIN)
 115 #define WCHAR_T_IS_UTF16
 116 #elif defined(OS_POSIX) && defined(COMPILER_GCC) && \
 117     defined(__WCHAR_MAX__) && \
 118     (__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff)
 119 #define WCHAR_T_IS_UTF32
 120 #elif defined(OS_POSIX) && defined(COMPILER_GCC) && \
 121     defined(__WCHAR_MAX__) && \
 122     (__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff)
 123 // On Posix, we'll detect short wchar_t, but projects aren't guaranteed to
 124 // compile in this mode (in particular, Chrome doesn't). This is intended for
 125 // other projects using base who manage their own dependencies and make sure
 126 // short wchar works for them.
 127 #define WCHAR_T_IS_UTF16
 128 #else
 129 #error Please add support for your compiler in build/build_config.h
 130 #endif
 131
 132 #if defined(OS_CHROMEOS)
 133 // Single define to trigger whether CrOS fonts have BCI on.
 134 // In that case font sizes/deltas should be adjusted.
 135 //define CROS_FONTS_USING_BCI
 136 #endif
 137
 138 #if defined(OS_ANDROID)
 139 // The compiler thinks std::string::const_iterator and "const char*" are
 140 // equivalent types.
 141 #define STD_STRING_ITERATOR_IS_CHAR_POINTER
 142 // The compiler thinks base::string16::const_iterator and "char16*" are
 143 // equivalent types.
 144 #define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER
 145 #endif
 146
 147 #endif  // BUILD_BUILD_CONFIG_H_