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  * Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
   8  * Licence:     wxWindows licence
   9  */
  10
  11 /*
  12     This is a C file, not C++ one, do not use C++ comments here!
  13  */
  14
  15 #ifndef _WX_DLIMPEXP_H_
  16 #define _WX_DLIMPEXP_H_
  17
  18 #if defined(HAVE_VISIBILITY)
  19 #    define WXEXPORT __attribute__ ((visibility("default")))
  20 #    define WXIMPORT __attribute__ ((visibility("default")))
  21 #elif defined(__WINDOWS__)
  22     /*
  23        __declspec works in BC++ 5 and later, Watcom C++ 11.0 and later as well
  24        as VC++.
  25      */
  26 #    if defined(__VISUALC__) || defined(__BORLANDC__) || defined(__WATCOMC__) || (defined(__WINDOWS__) && defined(__INTELC__))
  27 #        define WXEXPORT __declspec(dllexport)
  28 #        define WXIMPORT __declspec(dllimport)
  29     /*
  30         While gcc also supports __declspec(dllexport), it creates unusably huge
  31         DLL files since gcc 4.5 (while taking horribly long amounts of time),
  32         see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43601. Because of this
  33         we rely on binutils auto export/import support which seems to work
  34         quite well for 4.5+.
  35      */
  36 #    elif defined(__GNUC__) && !wxCHECK_GCC_VERSION(4, 5)
  37         /*
  38             __declspec could be used here too but let's use the native
  39             __attribute__ instead for clarity.
  40         */
  41 #       define WXEXPORT __attribute__((dllexport))
  42 #       define WXIMPORT __attribute__((dllimport))
  43 #    endif
  44 #elif defined(__WXPM__)
  45 #    if defined (__WATCOMC__)
  46 #        define WXEXPORT __declspec(dllexport)
  47         /*
  48            __declspec(dllimport) prepends __imp to imported symbols. We do NOT
  49            want that!
  50          */
  51 #        define WXIMPORT
  52 #    elif defined(__EMX__)
  53 #        define WXEXPORT
  54 #        define WXIMPORT
  55 #    elif (!(defined(__VISAGECPP__) && (__IBMCPP__ < 400 || __IBMC__ < 400 )))
  56 #        define WXEXPORT _Export
  57 #        define WXIMPORT _Export
  58 #    endif
  59 #elif defined(__CYGWIN__)
  60 #    define WXEXPORT __declspec(dllexport)
  61 #    define WXIMPORT __declspec(dllimport)
  62 #endif
  63
  64 /* for other platforms/compilers we don't anything */
  65 #ifndef WXEXPORT
  66 #    define WXEXPORT
  67 #    define WXIMPORT
  68 #endif
  69
  70 /*
  71    We support building wxWidgets as a set of several libraries but we don't
  72    support arbitrary combinations of libs/DLLs: either we build all of them as
  73    DLLs (in which case WXMAKINGDLL is defined) or none (it isn't).
  74
  75    However we have a problem because we need separate WXDLLIMPEXP versions for
  76    different libraries as, for example, wxString class should be dllexported
  77    when compiled in wxBase and dllimported otherwise, so we do define separate
  78    WXMAKING/USINGDLL_XYZ constants for each component XYZ.
  79  */
  80 #ifdef WXMAKINGDLL
  81 #    if wxUSE_BASE
  82 #        define WXMAKINGDLL_BASE
  83 #    endif
  84
  85 #    define WXMAKINGDLL_NET
  86 #    define WXMAKINGDLL_CORE
  87 #    define WXMAKINGDLL_ADV
  88 #    define WXMAKINGDLL_QA
  89 #    define WXMAKINGDLL_HTML
  90 #    define WXMAKINGDLL_GL
  91 #    define WXMAKINGDLL_XML
  92 #    define WXMAKINGDLL_XRC
  93 #    define WXMAKINGDLL_AUI
  94 #    define WXMAKINGDLL_PROPGRID
  95 #    define WXMAKINGDLL_RIBBON
  96 #    define WXMAKINGDLL_RICHTEXT
  97 #    define WXMAKINGDLL_MEDIA
  98 #    define WXMAKINGDLL_STC
  99 #    define WXMAKINGDLL_WEBVIEW
 100 #endif /* WXMAKINGDLL */
 101
 102 /*
 103    WXDLLIMPEXP_CORE maps to export declaration when building the DLL, to import
 104    declaration if using it or to nothing at all if we don't use wxWin as DLL
 105  */
 106 #ifdef WXMAKINGDLL_BASE
 107 #    define WXDLLIMPEXP_BASE WXEXPORT
 108 #    define WXDLLIMPEXP_DATA_BASE(type) WXEXPORT type
 109 #    if defined(HAVE_VISIBILITY)
 110 #        define WXDLLIMPEXP_INLINE_BASE WXEXPORT
 111 #    else
 112 #        define WXDLLIMPEXP_INLINE_BASE
 113 #    endif
 114 #elif defined(WXUSINGDLL)
 115 #    define WXDLLIMPEXP_BASE WXIMPORT
 116 #    define WXDLLIMPEXP_DATA_BASE(type) WXIMPORT type
 117 #    if defined(HAVE_VISIBILITY)
 118 #        define WXDLLIMPEXP_INLINE_BASE WXIMPORT
 119 #    else
 120 #        define WXDLLIMPEXP_INLINE_BASE
 121 #    endif
 122 #else /* not making nor using DLL */
 123 #    define WXDLLIMPEXP_BASE
 124 #    define WXDLLIMPEXP_DATA_BASE(type) type
 125 #    define WXDLLIMPEXP_INLINE_BASE
 126 #endif
 127
 128 #ifdef WXMAKINGDLL_NET
 129 #    define WXDLLIMPEXP_NET WXEXPORT
 130 #    define WXDLLIMPEXP_DATA_NET(type) WXEXPORT type
 131 #elif defined(WXUSINGDLL)
 132 #    define WXDLLIMPEXP_NET WXIMPORT
 133 #    define WXDLLIMPEXP_DATA_NET(type) WXIMPORT type
 134 #else /* not making nor using DLL */
 135 #    define WXDLLIMPEXP_NET
 136 #    define WXDLLIMPEXP_DATA_NET(type) type
 137 #endif
 138
 139 #ifdef WXMAKINGDLL_CORE
 140 #    define WXDLLIMPEXP_CORE WXEXPORT
 141 #    define WXDLLIMPEXP_DATA_CORE(type) WXEXPORT type
 142 #    if defined(HAVE_VISIBILITY)
 143 #        define WXDLLIMPEXP_INLINE_CORE WXEXPORT
 144 #    else
 145 #        define WXDLLIMPEXP_INLINE_CORE
 146 #    endif
 147 #elif defined(WXUSINGDLL)
 148 #    define WXDLLIMPEXP_CORE WXIMPORT
 149 #    define WXDLLIMPEXP_DATA_CORE(type) WXIMPORT type
 150 #    if defined(HAVE_VISIBILITY)
 151 #        define WXDLLIMPEXP_INLINE_CORE WXIMPORT
 152 #    else
 153 #        define WXDLLIMPEXP_INLINE_CORE
 154 #    endif
 155 #else /* not making nor using DLL */
 156 #    define WXDLLIMPEXP_CORE
 157 #    define WXDLLIMPEXP_DATA_CORE(type) type
 158 #    define WXDLLIMPEXP_INLINE_CORE
 159 #endif
 160
 161 #ifdef WXMAKINGDLL_ADV
 162 #    define WXDLLIMPEXP_ADV WXEXPORT
 163 #    define WXDLLIMPEXP_DATA_ADV(type) WXEXPORT type
 164 #elif defined(WXUSINGDLL)
 165 #    define WXDLLIMPEXP_ADV WXIMPORT
 166 #    define WXDLLIMPEXP_DATA_ADV(type) WXIMPORT type
 167 #else /* not making nor using DLL */
 168 #    define WXDLLIMPEXP_ADV
 169 #    define WXDLLIMPEXP_DATA_ADV(type) type
 170 #endif
 171
 172 #ifdef WXMAKINGDLL_QA
 173 #    define WXDLLIMPEXP_QA WXEXPORT
 174 #    define WXDLLIMPEXP_DATA_QA(type) WXEXPORT type
 175 #elif defined(WXUSINGDLL)
 176 #    define WXDLLIMPEXP_QA WXIMPORT
 177 #    define WXDLLIMPEXP_DATA_QA(type) WXIMPORT type
 178 #else /* not making nor using DLL */
 179 #    define WXDLLIMPEXP_QA
 180 #    define WXDLLIMPEXP_DATA_QA(type) type
 181 #endif
 182
 183 #ifdef WXMAKINGDLL_HTML
 184 #    define WXDLLIMPEXP_HTML WXEXPORT
 185 #    define WXDLLIMPEXP_DATA_HTML(type) WXEXPORT type
 186 #elif defined(WXUSINGDLL)
 187 #    define WXDLLIMPEXP_HTML WXIMPORT
 188 #    define WXDLLIMPEXP_DATA_HTML(type) WXIMPORT type
 189 #else /* not making nor using DLL */
 190 #    define WXDLLIMPEXP_HTML
 191 #    define WXDLLIMPEXP_DATA_HTML(type) type
 192 #endif
 193
 194 #ifdef WXMAKINGDLL_GL
 195 #    define WXDLLIMPEXP_GL WXEXPORT
 196 #elif defined(WXUSINGDLL)
 197 #    define WXDLLIMPEXP_GL WXIMPORT
 198 #else /* not making nor using DLL */
 199 #    define WXDLLIMPEXP_GL
 200 #endif
 201
 202 #ifdef WXMAKINGDLL_XML
 203 #    define WXDLLIMPEXP_XML WXEXPORT
 204 #elif defined(WXUSINGDLL)
 205 #    define WXDLLIMPEXP_XML WXIMPORT
 206 #else /* not making nor using DLL */
 207 #    define WXDLLIMPEXP_XML
 208 #endif
 209
 210 #ifdef WXMAKINGDLL_XRC
 211 #    define WXDLLIMPEXP_XRC WXEXPORT
 212 #elif defined(WXUSINGDLL)
 213 #    define WXDLLIMPEXP_XRC WXIMPORT
 214 #else /* not making nor using DLL */
 215 #    define WXDLLIMPEXP_XRC
 216 #endif
 217
 218 #ifdef WXMAKINGDLL_AUI
 219 #    define WXDLLIMPEXP_AUI WXEXPORT
 220 #elif defined(WXUSINGDLL)
 221 #    define WXDLLIMPEXP_AUI WXIMPORT
 222 #else /* not making nor using DLL */
 223 #    define WXDLLIMPEXP_AUI
 224 #endif
 225
 226 #ifdef WXMAKINGDLL_PROPGRID
 227 #    define WXDLLIMPEXP_PROPGRID WXEXPORT
 228 #    define WXDLLIMPEXP_DATA_PROPGRID(type) WXEXPORT type
 229 #elif defined(WXUSINGDLL)
 230 #    define WXDLLIMPEXP_PROPGRID WXIMPORT
 231 #    define WXDLLIMPEXP_DATA_PROPGRID(type) WXIMPORT type
 232 #else /* not making nor using DLL */
 233 #    define WXDLLIMPEXP_PROPGRID
 234 #    define WXDLLIMPEXP_DATA_PROPGRID(type) type
 235 #endif
 236
 237 #ifdef WXMAKINGDLL_RIBBON
 238 #    define WXDLLIMPEXP_RIBBON WXEXPORT
 239 #elif defined(WXUSINGDLL)
 240 #    define WXDLLIMPEXP_RIBBON WXIMPORT
 241 #else /* not making nor using DLL */
 242 #    define WXDLLIMPEXP_RIBBON
 243 #endif
 244
 245 #ifdef WXMAKINGDLL_RICHTEXT
 246 #    define WXDLLIMPEXP_RICHTEXT WXEXPORT
 247 #elif defined(WXUSINGDLL)
 248 #    define WXDLLIMPEXP_RICHTEXT WXIMPORT
 249 #else /* not making nor using DLL */
 250 #    define WXDLLIMPEXP_RICHTEXT
 251 #endif
 252
 253 #ifdef WXMAKINGDLL_MEDIA
 254 #    define WXDLLIMPEXP_MEDIA WXEXPORT
 255 #elif defined(WXUSINGDLL)
 256 #    define WXDLLIMPEXP_MEDIA WXIMPORT
 257 #else /* not making nor using DLL */
 258 #    define WXDLLIMPEXP_MEDIA
 259 #endif
 260
 261 #ifdef WXMAKINGDLL_STC
 262 #    define WXDLLIMPEXP_STC WXEXPORT
 263 #    define WXDLLIMPEXP_DATA_STC(type) WXEXPORT type
 264 #elif defined(WXUSINGDLL)
 265 #    define WXDLLIMPEXP_STC WXIMPORT
 266 #    define WXDLLIMPEXP_DATA_STC(type) WXIMPORT type
 267 #else /* not making nor using DLL */
 268 #    define WXDLLIMPEXP_STC
 269 #    define WXDLLIMPEXP_DATA_STC(type) type
 270 #endif
 271
 272 #ifdef WXMAKINGDLL_WEBVIEW
 273 #    define WXDLLIMPEXP_WEBVIEW WXEXPORT
 274 #    define WXDLLIMPEXP_DATA_WEBVIEW(type) WXEXPORT type
 275 #elif defined(WXUSINGDLL)
 276 #    define WXDLLIMPEXP_WEBVIEW WXIMPORT
 277 #    define WXDLLIMPEXP_DATA_WEBVIEW(type) WXIMPORT type
 278 #else /* not making nor using DLL */
 279 #    define WXDLLIMPEXP_WEBVIEW
 280 #    define WXDLLIMPEXP_DATA_WEBVIEW(type) type
 281 #endif
 282
 283 /*
 284    GCC warns about using __attribute__ (and also __declspec in mingw32 case) on
 285    forward declarations while MSVC complains about forward declarations without
 286    __declspec for the classes later declared with it, so we need a separate set
 287    of macros for forward declarations to hide this difference:
 288  */
 289 #if defined(HAVE_VISIBILITY) || (defined(__WINDOWS__) && defined(__GNUC__))
 290     #define WXDLLIMPEXP_FWD_BASE
 291     #define WXDLLIMPEXP_FWD_NET
 292     #define WXDLLIMPEXP_FWD_CORE
 293     #define WXDLLIMPEXP_FWD_ADV
 294     #define WXDLLIMPEXP_FWD_QA
 295     #define WXDLLIMPEXP_FWD_HTML
 296     #define WXDLLIMPEXP_FWD_GL
 297     #define WXDLLIMPEXP_FWD_XML
 298     #define WXDLLIMPEXP_FWD_XRC
 299     #define WXDLLIMPEXP_FWD_AUI
 300     #define WXDLLIMPEXP_FWD_PROPGRID
 301     #define WXDLLIMPEXP_FWD_RIBBON
 302     #define WXDLLIMPEXP_FWD_RICHTEXT
 303     #define WXDLLIMPEXP_FWD_MEDIA
 304     #define WXDLLIMPEXP_FWD_STC
 305     #define WXDLLIMPEXP_FWD_WEBVIEW
 306 #else
 307     #define WXDLLIMPEXP_FWD_BASE      WXDLLIMPEXP_BASE
 308     #define WXDLLIMPEXP_FWD_NET       WXDLLIMPEXP_NET
 309     #define WXDLLIMPEXP_FWD_CORE      WXDLLIMPEXP_CORE
 310     #define WXDLLIMPEXP_FWD_ADV       WXDLLIMPEXP_ADV
 311     #define WXDLLIMPEXP_FWD_QA        WXDLLIMPEXP_QA
 312     #define WXDLLIMPEXP_FWD_HTML      WXDLLIMPEXP_HTML
 313     #define WXDLLIMPEXP_FWD_GL        WXDLLIMPEXP_GL
 314     #define WXDLLIMPEXP_FWD_XML       WXDLLIMPEXP_XML
 315     #define WXDLLIMPEXP_FWD_XRC       WXDLLIMPEXP_XRC
 316     #define WXDLLIMPEXP_FWD_AUI       WXDLLIMPEXP_AUI
 317     #define WXDLLIMPEXP_FWD_PROPGRID  WXDLLIMPEXP_PROPGRID
 318     #define WXDLLIMPEXP_FWD_RIBBON    WXDLLIMPEXP_RIBBON
 319     #define WXDLLIMPEXP_FWD_RICHTEXT  WXDLLIMPEXP_RICHTEXT
 320     #define WXDLLIMPEXP_FWD_MEDIA     WXDLLIMPEXP_MEDIA
 321     #define WXDLLIMPEXP_FWD_STC       WXDLLIMPEXP_STC
 322     #define WXDLLIMPEXP_FWD_WEBVIEW   WXDLLIMPEXP_WEBVIEW
 323 #endif
 324
 325 /* for backwards compatibility, define suffix-less versions too */
 326 #define WXDLLEXPORT WXDLLIMPEXP_CORE
 327 #define WXDLLEXPORT_DATA WXDLLIMPEXP_DATA_CORE
 328
 329 /*
 330    MSVC up to 6.0 needs to be explicitly told to export template instantiations
 331    used by the DLL clients, use this macro to do it like this:
 332
 333        template <typename T> class Foo { ... };
 334        WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE( Foo<int> )
 335
 336    (notice that currently we only need this for wxBase and wxCore libraries)
 337  */
 338 #if defined(__VISUALC__) && (__VISUALC__ <= 1200)
 339     #ifdef WXMAKINGDLL_BASE
 340         #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl) \
 341             template class WXDLLIMPEXP_BASE decl;
 342         #define WXDLLIMPEXP_TEMPLATE_INSTANCE_CORE(decl) \
 343             template class WXDLLIMPEXP_CORE decl;
 344     #else
 345         /*
 346            We need to disable this warning when using this macro, as
 347            recommended by Microsoft itself:
 348
 349            http://support.microsoft.com/default.aspx?scid=kb%3ben-us%3b168958
 350          */
 351         #pragma warning(disable:4231)
 352
 353         #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl) \
 354             extern template class WXDLLIMPEXP_BASE decl;
 355         #define WXDLLIMPEXP_TEMPLATE_INSTANCE_CORE(decl) \
 356             extern template class WXDLLIMPEXP_CORE decl;
 357     #endif
 358 #else /* not VC <= 6 */
 359     #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl)
 360     #define WXDLLIMPEXP_TEMPLATE_INSTANCE_CORE(decl)
 361 #endif /* VC6/others */
 362
 363 #endif /* _WX_DLIMPEXP_H_ */
 364