mirror of
https://github.com/cookiengineer/audacity
synced 2025-11-04 08:04:06 +01:00
39 lines
1.7 KiB
C
39 lines
1.7 KiB
C
// The following ifdef block is the standard way of creating macros which make exporting
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// from a DLL simpler. All files within this DLL are compiled with the LIBSCRIPT_EXPORTS
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// symbol defined on the command line. this symbol should not be defined on any project
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// that uses this DLL. This way any other project whose source files include this file see
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// MOD_NULL_DLL_API functions as being imported from a DLL, wheras this DLL sees symbols
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// defined with this macro as being exported.
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/* Magic for dynamic library import and export. This is unfortunately
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* compiler-specific because there isn't a standard way to do it. Currently it
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* works with the Visual Studio compiler for windows, and for GCC 4+. Anything
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* else gets all symbols made public, which gets messy */
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/* The Visual Studio implementation */
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#ifdef _MSC_VER
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#define MOD_NULL_DLL_IMPORT _declspec(dllimport)
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#ifdef BUILDING_MOD_NULL
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#define MOD_NULL_DLL_API _declspec(dllexport)
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#elif _DLL
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#define MOD_NULL_DLL_API _declspec(dllimport)
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#else
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#define AUDACITY_DLL_API
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#endif
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#endif //_MSC_VER
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/* The GCC implementation */
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#ifdef CC_HASVISIBILITY // this is provided by the configure script, is only
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// enabled for suitable GCC versions
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/* The incantation is a bit weird here because it uses ELF symbol stuff. If we
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* make a symbol "default" it makes it visible (for import or export). Making it
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* "hidden" means it is invisible outside the shared object. */
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#define MOD_NULL_DLL_IMPORT __attribute__((visibility("default")))
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#ifdef BUILDING_MOD_NULL
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#define MOD_NULL_DLL_API __attribute__((visibility("default")))
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#else
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#define MOD_NULL_DLL_API __attribute__((visibility("default")))
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#endif
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#endif
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