1 // Copyright (c) 1999, Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above 11 // copyright notice, this list of conditions and the following disclaimer 12 // in the documentation and/or other materials provided with the 13 // distribution. 14 // * Neither the name of Google Inc. nor the names of its 15 // contributors may be used to endorse or promote products derived from 16 // this software without specific prior written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 // --- 31 // 32 // Revamped and reorganized by Craig Silverstein 33 // 34 // This is the file that should be included by any file which declares 35 // command line flag. 36 37 #ifndef GFLAGS_DECLARE_H_ 38 #define GFLAGS_DECLARE_H_ 39 40 41 // --------------------------------------------------------------------------- 42 // Namespace of gflags library symbols. 43 #define GFLAGS_NAMESPACE @GFLAGS_NAMESPACE@ 44 45 // --------------------------------------------------------------------------- 46 // Windows DLL import/export. 47 48 // Whether gflags library is a DLL. 49 // 50 // Set to 1 by default when the shared gflags library was built on Windows. 51 // Must be overwritten when this header file is used with the optionally also 52 // built static library instead; set by CMake's INTERFACE_COMPILE_DEFINITIONS. 53 #ifndef GFLAGS_IS_A_DLL 54 # define GFLAGS_IS_A_DLL @GFLAGS_IS_A_DLL@ 55 #endif 56 57 // We always want to import the symbols of the gflags library. 58 #ifndef GFLAGS_DLL_DECL 59 # if GFLAGS_IS_A_DLL && defined(_MSC_VER) 60 # define GFLAGS_DLL_DECL __declspec(dllimport) 61 # elif defined(__GNUC__) && __GNUC__ >= 4 62 # define GFLAGS_DLL_DECL __attribute__((visibility("default"))) 63 # else 64 # define GFLAGS_DLL_DECL 65 # endif 66 #endif 67 68 // We always want to import variables declared in user code. 69 #ifndef GFLAGS_DLL_DECLARE_FLAG 70 # if GFLAGS_IS_A_DLL && defined(_MSC_VER) 71 # define GFLAGS_DLL_DECLARE_FLAG __declspec(dllimport) 72 # elif defined(__GNUC__) && __GNUC__ >= 4 73 # define GFLAGS_DLL_DECLARE_FLAG __attribute__((visibility("default"))) 74 # else 75 # define GFLAGS_DLL_DECLARE_FLAG 76 # endif 77 #endif 78 79 // --------------------------------------------------------------------------- 80 // Flag types 81 #include <string> 82 #if @HAVE_STDINT_H@ 83 # include <stdint.h> // the normal place uint32_t is defined 84 #elif @HAVE_SYS_TYPES_H@ 85 # include <sys/types.h> // the normal place u_int32_t is defined 86 #elif @HAVE_INTTYPES_H@ 87 # include <inttypes.h> // a third place for uint32_t or u_int32_t 88 #endif 89 90 namespace GFLAGS_NAMESPACE { 91 92 #if @GFLAGS_INTTYPES_FORMAT_C99@ // C99 93 typedef int32_t int32; 94 typedef uint32_t uint32; 95 typedef int64_t int64; 96 typedef uint64_t uint64; 97 #elif @GFLAGS_INTTYPES_FORMAT_BSD@ // BSD 98 typedef int32_t int32; 99 typedef u_int32_t uint32; 100 typedef int64_t int64; 101 typedef u_int64_t uint64; 102 #elif @GFLAGS_INTTYPES_FORMAT_VC7@ // Windows 103 typedef __int32 int32; 104 typedef unsigned __int32 uint32; 105 typedef __int64 int64; 106 typedef unsigned __int64 uint64; 107 #else 108 # error Do not know how to define a 32-bit integer quantity on your system 109 #endif 110 111 } // namespace GFLAGS_NAMESPACE 112 113 114 namespace fLS { 115 116 // The meaning of "string" might be different between now and when the 117 // macros below get invoked (e.g., if someone is experimenting with 118 // other string implementations that get defined after this file is 119 // included). Save the current meaning now and use it in the macros. 120 typedef std::string clstring; 121 122 } // namespace fLS 123 124 125 #define DECLARE_VARIABLE(type, shorttype, name) \ 126 /* We always want to import declared variables, dll or no */ \ 127 namespace fL##shorttype { extern GFLAGS_DLL_DECLARE_FLAG type FLAGS_##name; } \ 128 using fL##shorttype::FLAGS_##name 129 130 #define DECLARE_bool(name) \ 131 DECLARE_VARIABLE(bool, B, name) 132 133 #define DECLARE_int32(name) \ 134 DECLARE_VARIABLE(::GFLAGS_NAMESPACE::int32, I, name) 135 136 #define DECLARE_uint32(name) \ 137 DECLARE_VARIABLE(::GFLAGS_NAMESPACE::uint32, U, name) 138 139 #define DECLARE_int64(name) \ 140 DECLARE_VARIABLE(::GFLAGS_NAMESPACE::int64, I64, name) 141 142 #define DECLARE_uint64(name) \ 143 DECLARE_VARIABLE(::GFLAGS_NAMESPACE::uint64, U64, name) 144 145 #define DECLARE_double(name) \ 146 DECLARE_VARIABLE(double, D, name) 147 148 #define DECLARE_string(name) \ 149 /* We always want to import declared variables, dll or no */ \ 150 namespace fLS { \ 151 extern GFLAGS_DLL_DECLARE_FLAG ::fLS::clstring& FLAGS_##name; \ 152 } \ 153 using fLS::FLAGS_##name 154 155 156 #endif // GFLAGS_DECLARE_H_ 157
