diff options
Diffstat (limited to 'format/export')
| -rw-r--r-- | format/export | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/format/export b/format/export new file mode 100644 index 0000000..39a37da --- /dev/null +++ b/format/export @@ -0,0 +1,36 @@ +// file: format/export -*- C++ -*- + +#pragma once + +// Normally we don't export class templates (but do complete specializations), +// inline functions, and classes with only inline member functions. Exporting +// classes that inherit from non-exported/imported bases (e.g., std::string) +// will end up badly. The only known workarounds are to not inherit or to not +// export. Also, MinGW GCC doesn't like seeing non-exported function being +// used before their inline definition. The workaround is to reorder code. In +// the end it's all trial and error. + +#if defined(LIBFORMAT_STATIC) // Using static. +# define LIBFORMAT_EXPORT +#elif defined(LIBFORMAT_STATIC_BUILD) // Building static. +# define LIBFORMAT_EXPORT +#elif defined(LIBFORMAT_SHARED) // Using shared. +# ifdef _WIN32 +# define LIBFORMAT_EXPORT __declspec(dllimport) +# else +# define LIBFORMAT_EXPORT +# endif +#elif defined(LIBFORMAT_SHARED_BUILD) // Building shared. +# ifdef _WIN32 +# define LIBFORMAT_EXPORT __declspec(dllexport) +# else +# define LIBFORMAT_EXPORT +# endif +#else +// If none of the above macros are defined, then we assume we are being used +// by some third-party build system that cannot/doesn't signal the library +// type. Note that this fallback works for both static and shared but in case +// of shared will be sub-optimal compared to having dllimport. +// +# define LIBFORMAT_EXPORT // Using static or shared. +#endif |