diff options
Diffstat (limited to 'include/FLAC++/export.h')
| -rw-r--r-- | include/FLAC++/export.h | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/include/FLAC++/export.h b/include/FLAC++/export.h index e672e8f0..19370fab 100644 --- a/include/FLAC++/export.h +++ b/include/FLAC++/export.h @@ -49,20 +49,30 @@ * This module contains \#defines and symbols for exporting function * calls, and providing version information and compiled-in features. * - * If you are compiling with MSVC and will link to the static library - * (libFLAC++.lib) you should define FLAC__NO_DLL in your project to - * make sure the symbols are exported properly. + * If you are compiling for Windows (with Visual Studio or MinGW for + * example) and will link to the static library (libFLAC++.lib) you + * should define FLAC__NO_DLL in your project to make sure the symbols + * are exported properly. * * \{ */ +/** This \#define is used internally in libFLAC and its headers to make + * sure the correct symbols are exported when working with shared + * libraries. On Windows, this \#define is set to __declspec(dllexport) + * when compiling libFLAC into a library and to __declspec(dllimport) + * when the headers are used to link to that DLL. On non-Windows systems + * it is used to set symbol visibility. + * + * Because of this, the define FLAC__NO_DLL must be defined when linking + * to libFLAC statically or linking will fail. + */ /* This has grown quite complicated. FLAC__NO_DLL is used by MSVC sln * files and CMake, which build either static or shared. autotools can * build static, shared or **both**. Therefore, DLL_EXPORT, which is set * by libtool, must override FLAC__NO_DLL on building shared components */ #if defined(_WIN32) - #if defined(FLAC__NO_DLL) && !(defined(DLL_EXPORT)) #define FLACPP_API #else @@ -72,21 +82,18 @@ #define FLACPP_API __declspec(dllimport) #endif #endif - #elif defined(FLAC__USE_VISIBILITY_ATTR) #define FLACPP_API __attribute__ ((visibility ("default"))) - #else #define FLACPP_API - #endif -/* These \#defines will mirror the libtool-based library version number, see +/** These \#defines will mirror the libtool-based library version number, see * http://www.gnu.org/software/libtool/manual/libtool.html#Libtool-versioning */ #define FLACPP_API_VERSION_CURRENT 10 -#define FLACPP_API_VERSION_REVISION 0 -#define FLACPP_API_VERSION_AGE 0 +#define FLACPP_API_VERSION_REVISION 0 /**< see above */ +#define FLACPP_API_VERSION_AGE 0 /**< see above */ /* \} */ |