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