include/wx/dlimpexp.h

   1 /*
   2  * Name:        wx/dlimpexp.h
   3  * Purpose:     Macros for declaring DLL-imported/exported functions
   4  * Author:      Vadim Zeitlin
   5  * Modified by:
   6  * Created:     16.10.2003 (extracted from wx/defs.h)
   7  * RCS-ID:      $Id$
   8  * Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
   9  * Licence:     wxWindows licence
  10  */
  11
  12 /*
  13     This is a C file, not C++ one, do not use C++ comments here!
  14  */
  15
  16 #ifndef _WX_DLIMPEXP_H_
  17 #define _WX_DLIMPEXP_H_
  18
  19 #if defined(HAVE_VISIBILITY)
  20 #    define WXEXPORT __attribute__ ((visibility("default")))
  21 #    define WXIMPORT __attribute__ ((visibility("default")))
  22 #elif defined(__WINDOWS__)
  23     /*
  24        __declspec works in BC++ 5 and later, Watcom C++ 11.0 and later as well
  25        as VC++ and gcc
  26      */
  27 #    if defined(__VISUALC__) || defined(__BORLANDC__) || defined(__GNUC__) || defined(__WATCOMC__)
  28 #        define WXEXPORT __declspec(dllexport)
  29 #        define WXIMPORT __declspec(dllimport)
  30 #    else /* compiler doesn't support __declspec() */
  31 #        define WXEXPORT
  32 #        define WXIMPORT
  33 #    endif
  34 #elif defined(__WXPM__)
  35 #    if defined (__WATCOMC__)
  36 #        define WXEXPORT __declspec(dllexport)
  37         /*
  38            __declspec(dllimport) prepends __imp to imported symbols. We do NOT
  39            want that!
  40          */
  41 #        define WXIMPORT
  42 #    elif defined(__EMX__)
  43 #        define WXEXPORT
  44 #        define WXIMPORT
  45 #    elif (!(defined(__VISAGECPP__) && (__IBMCPP__ < 400 || __IBMC__ < 400 )))
  46 #        define WXEXPORT _Export
  47 #        define WXIMPORT _Export
  48 #    endif
  49 #elif defined(__WXMAC__) || defined(__WXCOCOA__)
  50 #    ifdef __MWERKS__
  51 #        define WXEXPORT __declspec(export)
  52 #        define WXIMPORT __declspec(import)
  53 #    endif
  54 #elif defined(__CYGWIN__)
  55 #    define WXEXPORT __declspec(dllexport)
  56 #    define WXIMPORT __declspec(dllimport)
  57 #endif
  58
  59 /* for other platforms/compilers we don't anything */
  60 #ifndef WXEXPORT
  61 #    define WXEXPORT
  62 #    define WXIMPORT
  63 #endif
  64
  65 /*
  66    We support building wxWidgets as a set of several libraries but we don't
  67    support arbitrary combinations of libs/DLLs: either we build all of them as
  68    DLLs (in which case WXMAKINGDLL is defined) or none (it isn't).
  69
  70    However we have a problem because we need separate WXDLLIMPEXP versions for
  71    different libraries as, for example, wxString class should be dllexported
  72    when compiled in wxBase and dllimported otherwise, so we do define separate
  73    WXMAKING/USINGDLL_XYZ constants for each component XYZ.
  74  */
  75 #ifdef WXMAKINGDLL
  76 #    if wxUSE_BASE
  77 #        define WXMAKINGDLL_BASE
  78 #    endif
  79
  80 #    define WXMAKINGDLL_NET
  81 #    define WXMAKINGDLL_CORE
  82 #    define WXMAKINGDLL_ADV
  83 #    define WXMAKINGDLL_QA
  84 #    define WXMAKINGDLL_HTML
  85 #    define WXMAKINGDLL_GL
  86 #    define WXMAKINGDLL_XML
  87 #    define WXMAKINGDLL_XRC
  88 #    define WXMAKINGDLL_AUI
  89 #    define WXMAKINGDLL_RICHTEXT
  90 #    define WXMAKINGDLL_MEDIA
  91 #    define WXMAKINGDLL_STC
  92 #endif /* WXMAKINGDLL */
  93
  94 /*
  95    WXDLLIMPEXP_CORE maps to export declaration when building the DLL, to import
  96    declaration if using it or to nothing at all if we don't use wxWin as DLL
  97  */
  98 #ifdef WXMAKINGDLL_BASE
  99 #    define WXDLLIMPEXP_BASE WXEXPORT
 100 #    define WXDLLIMPEXP_DATA_BASE(type) WXEXPORT type
 101 #    if defined(HAVE_VISIBILITY)
 102 #        define WXDLLIMPEXP_INLINE_BASE WXEXPORT
 103 #    else
 104 #        define WXDLLIMPEXP_INLINE_BASE
 105 #    endif
 106 #elif defined(WXUSINGDLL)
 107 #    define WXDLLIMPEXP_BASE WXIMPORT
 108 #    define WXDLLIMPEXP_DATA_BASE(type) WXIMPORT type
 109 #    if defined(HAVE_VISIBILITY)
 110 #        define WXDLLIMPEXP_INLINE_BASE WXIMPORT
 111 #    else
 112 #        define WXDLLIMPEXP_INLINE_BASE
 113 #    endif
 114 #else /* not making nor using DLL */
 115 #    define WXDLLIMPEXP_BASE
 116 #    define WXDLLIMPEXP_DATA_BASE(type) type
 117 #    define WXDLLIMPEXP_INLINE_BASE
 118 #endif
 119
 120 #ifdef WXMAKINGDLL_NET
 121 #    define WXDLLIMPEXP_NET WXEXPORT
 122 #    define WXDLLIMPEXP_DATA_NET(type) WXEXPORT type
 123 #elif defined(WXUSINGDLL)
 124 #    define WXDLLIMPEXP_NET WXIMPORT
 125 #    define WXDLLIMPEXP_DATA_NET(type) WXIMPORT type
 126 #else /* not making nor using DLL */
 127 #    define WXDLLIMPEXP_NET
 128 #    define WXDLLIMPEXP_DATA_NET(type) type
 129 #endif
 130
 131 #ifdef WXMAKINGDLL_CORE
 132 #    define WXDLLIMPEXP_CORE WXEXPORT
 133 #    define WXDLLIMPEXP_DATA_CORE(type) WXEXPORT type
 134 #elif defined(WXUSINGDLL)
 135 #    define WXDLLIMPEXP_CORE WXIMPORT
 136 #    define WXDLLIMPEXP_DATA_CORE(type) WXIMPORT type
 137 #else /* not making nor using DLL */
 138 #    define WXDLLIMPEXP_CORE
 139 #    define WXDLLIMPEXP_DATA_CORE(type) type
 140 #endif
 141
 142 #ifdef WXMAKINGDLL_ADV
 143 #    define WXDLLIMPEXP_ADV WXEXPORT
 144 #    define WXDLLIMPEXP_DATA_ADV(type) WXEXPORT type
 145 #elif defined(WXUSINGDLL)
 146 #    define WXDLLIMPEXP_ADV WXIMPORT
 147 #    define WXDLLIMPEXP_DATA_ADV(type) WXIMPORT type
 148 #else /* not making nor using DLL */
 149 #    define WXDLLIMPEXP_ADV
 150 #    define WXDLLIMPEXP_DATA_ADV(type) type
 151 #endif
 152
 153 #ifdef WXMAKINGDLL_QA
 154 #    define WXDLLIMPEXP_QA WXEXPORT
 155 #    define WXDLLIMPEXP_DATA_QA(type) WXEXPORT type
 156 #elif defined(WXUSINGDLL)
 157 #    define WXDLLIMPEXP_QA WXIMPORT
 158 #    define WXDLLIMPEXP_DATA_QA(type) WXIMPORT type
 159 #else /* not making nor using DLL */
 160 #    define WXDLLIMPEXP_QA
 161 #    define WXDLLIMPEXP_DATA_QA(type) type
 162 #endif
 163
 164 #ifdef WXMAKINGDLL_HTML
 165 #    define WXDLLIMPEXP_HTML WXEXPORT
 166 #    define WXDLLIMPEXP_DATA_HTML(type) WXEXPORT type
 167 #elif defined(WXUSINGDLL)
 168 #    define WXDLLIMPEXP_HTML WXIMPORT
 169 #    define WXDLLIMPEXP_DATA_HTML(type) WXIMPORT type
 170 #else /* not making nor using DLL */
 171 #    define WXDLLIMPEXP_HTML
 172 #    define WXDLLIMPEXP_DATA_HTML(type) type
 173 #endif
 174
 175 #ifdef WXMAKINGDLL_GL
 176 #    define WXDLLIMPEXP_GL WXEXPORT
 177 #elif defined(WXUSINGDLL)
 178 #    define WXDLLIMPEXP_GL WXIMPORT
 179 #else /* not making nor using DLL */
 180 #    define WXDLLIMPEXP_GL
 181 #endif
 182
 183 #ifdef WXMAKINGDLL_XML
 184 #    define WXDLLIMPEXP_XML WXEXPORT
 185 #elif defined(WXUSINGDLL)
 186 #    define WXDLLIMPEXP_XML WXIMPORT
 187 #else /* not making nor using DLL */
 188 #    define WXDLLIMPEXP_XML
 189 #endif
 190
 191 #ifdef WXMAKINGDLL_XRC
 192 #    define WXDLLIMPEXP_XRC WXEXPORT
 193 #elif defined(WXUSINGDLL)
 194 #    define WXDLLIMPEXP_XRC WXIMPORT
 195 #else /* not making nor using DLL */
 196 #    define WXDLLIMPEXP_XRC
 197 #endif
 198
 199 #ifdef WXMAKINGDLL_AUI
 200 #    define WXDLLIMPEXP_AUI WXEXPORT
 201 #elif defined(WXUSINGDLL)
 202 #    define WXDLLIMPEXP_AUI WXIMPORT
 203 #else /* not making nor using DLL */
 204 #    define WXDLLIMPEXP_AUI
 205 #endif
 206
 207 #ifdef WXMAKINGDLL_PROPGRID
 208 #    define WXDLLIMPEXP_PROPGRID WXEXPORT
 209 #elif defined(WXUSINGDLL)
 210 #    define WXDLLIMPEXP_PROPGRID WXIMPORT
 211 #else /* not making nor using DLL */
 212 #    define WXDLLIMPEXP_PROPGRID
 213 #endif
 214
 215 #ifdef WXMAKINGDLL_RICHTEXT
 216 #    define WXDLLIMPEXP_RICHTEXT WXEXPORT
 217 #elif defined(WXUSINGDLL)
 218 #    define WXDLLIMPEXP_RICHTEXT WXIMPORT
 219 #else /* not making nor using DLL */
 220 #    define WXDLLIMPEXP_RICHTEXT
 221 #endif
 222
 223 #ifdef WXMAKINGDLL_MEDIA
 224 #    define WXDLLIMPEXP_MEDIA WXEXPORT
 225 #elif defined(WXUSINGDLL)
 226 #    define WXDLLIMPEXP_MEDIA WXIMPORT
 227 #else /* not making nor using DLL */
 228 #    define WXDLLIMPEXP_MEDIA
 229 #endif
 230
 231 #ifdef WXMAKINGDLL_STC
 232     #define WXDLLIMPEXP_STC WXEXPORT
 233 #elif defined(WXUSINGDLL)
 234     #define WXDLLIMPEXP_STC WXIMPORT
 235 #else /* not making nor using DLL */
 236     #define WXDLLIMPEXP_STC
 237 #endif
 238
 239 /*
 240    GCC warns about using __attribute__ (and also __declspec in mingw32 case) on
 241    forward declarations while MSVC complains about forward declarations without
 242    __declspec for the classes later declared with it, so we need a separate set
 243    of macros for forward declarations to hide this difference:
 244  */
 245 #if defined(HAVE_VISIBILITY) || (defined(__WINDOWS__) && defined(__GNUC__))
 246     #define WXDLLIMPEXP_FWD_BASE
 247     #define WXDLLIMPEXP_FWD_NET
 248     #define WXDLLIMPEXP_FWD_CORE
 249     #define WXDLLIMPEXP_FWD_ADV
 250     #define WXDLLIMPEXP_FWD_QA
 251     #define WXDLLIMPEXP_FWD_HTML
 252     #define WXDLLIMPEXP_FWD_GL
 253     #define WXDLLIMPEXP_FWD_XML
 254     #define WXDLLIMPEXP_FWD_XRC
 255     #define WXDLLIMPEXP_FWD_AUI
 256     #define WXDLLIMPEXP_FWD_RICHTEXT
 257     #define WXDLLIMPEXP_FWD_MEDIA
 258     #define WXDLLIMPEXP_FWD_STC
 259 #else
 260     #define WXDLLIMPEXP_FWD_BASE      WXDLLIMPEXP_BASE
 261     #define WXDLLIMPEXP_FWD_NET       WXDLLIMPEXP_NET
 262     #define WXDLLIMPEXP_FWD_CORE      WXDLLIMPEXP_CORE
 263     #define WXDLLIMPEXP_FWD_ADV       WXDLLIMPEXP_ADV
 264     #define WXDLLIMPEXP_FWD_QA        WXDLLIMPEXP_QA
 265     #define WXDLLIMPEXP_FWD_HTML      WXDLLIMPEXP_HTML
 266     #define WXDLLIMPEXP_FWD_GL        WXDLLIMPEXP_GL
 267     #define WXDLLIMPEXP_FWD_XML       WXDLLIMPEXP_XML
 268     #define WXDLLIMPEXP_FWD_XRC       WXDLLIMPEXP_XRC
 269     #define WXDLLIMPEXP_FWD_AUI       WXDLLIMPEXP_AUI
 270     #define WXDLLIMPEXP_FWD_RICHTEXT  WXDLLIMPEXP_RICHTEXT
 271     #define WXDLLIMPEXP_FWD_MEDIA     WXDLLIMPEXP_MEDIA
 272     #define WXDLLIMPEXP_FWD_STC       WXDLLIMPEXP_STC
 273 #endif
 274
 275 /* for backwards compatibility, define suffix-less versions too */
 276 #define WXDLLEXPORT WXDLLIMPEXP_CORE
 277 #define WXDLLEXPORT_DATA WXDLLIMPEXP_DATA_CORE
 278
 279 /*
 280    MSVC up to 6.0 needs to be explicitly told to export template instantiations
 281    used by the DLL clients, use this macro to do it like this:
 282
 283        template <typename T> class Foo { ... };
 284        WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE( Foo<int> )
 285
 286    (notice that currently we only need this for wxBase and wxCore libraries)
 287  */
 288 #if defined(__VISUALC__) && (__VISUALC__ <= 1200)
 289     #ifdef WXMAKINGDLL_BASE
 290         #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl) \
 291             template class WXDLLIMPEXP_BASE decl;
 292         #define WXDLLIMPEXP_TEMPLATE_INSTANCE_CORE(decl) \
 293             template class WXDLLIMPEXP_CORE decl;
 294     #else
 295         /*
 296            We need to disable this warning when using this macro, as
 297            recommended by Microsoft itself:
 298
 299            http://support.microsoft.com/default.aspx?scid=kb%3ben-us%3b168958
 300          */
 301         #pragma warning(disable:4231)
 302
 303         #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl) \
 304             extern template class WXDLLIMPEXP_BASE decl;
 305         #define WXDLLIMPEXP_TEMPLATE_INSTANCE_CORE(decl) \
 306             extern template class WXDLLIMPEXP_CORE decl;
 307     #endif
 308 #else /* not VC <= 6 */
 309     #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl)
 310     #define WXDLLIMPEXP_TEMPLATE_INSTANCE_CORE(decl)
 311 #endif /* VC6/others */
 312
 313 #endif /* _WX_DLIMPEXP_H_ */
 314