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Diffstat (limited to 'butl/export')
| -rw-r--r-- | butl/export | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/butl/export b/butl/export new file mode 100644 index 0000000..2b5a5ac --- /dev/null +++ b/butl/export @@ -0,0 +1,37 @@ +// file : butl/export -*- C++ -*- +// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd +// license : MIT; see accompanying LICENSE file + +#ifndef BUTL_EXPORT +#define BUTL_EXPORT + +// Normally we don't export class templates (but do complete specializations), +// inline functions, and classes without any member functions. But in the end +// it's all trial and error to figure out what VC needs exported. + +#if defined(LIBBUTL_STATIC) // Using static. +# define LIBBUTL_EXPORT +#elif defined(LIBBUTL_STATIC_BUILD) // Building static. +# define LIBBUTL_EXPORT +#elif defined(LIBBUTL_SHARED) // Using shared. +# ifdef _WIN32 +# define LIBBUTL_EXPORT __declspec(dllimport) +# else +# define LIBBUTL_EXPORT +# endif +#elif defined(LIBBUTL_SHARED_BUILD) // Building shared. +# ifdef _WIN32 +# define LIBBUTL_EXPORT __declspec(dllexport) +# else +# define LIBBUTL_EXPORT +# endif +#else +// If none of the above macros are defined, then we assume we are being using +// 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 LIBBUTL_EXPORT // Using static or shared. +#endif + +#endif // BUTL_EXPORT |