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Add FMT_EXTERN_TEMPLATE_API for designate DLL export extern template

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When exporting DLL, do not designate `__declspec(dllexport)` any template that has any explicit class template declaration a.k.a. `extern template`. Instead, designate `__declspec(dllexport)` at single point where we have explicit class template definition a.k.a. normal instantiation without `extern`

Note: this is a c++11 feature.
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denchat 2019-05-02 13:32:00 +07:00 committed by GitHub
parent e4bd8c1ef2
commit 4f919b83c2
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4
include/fmt/core.h
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@ -189,11 +189,15 @@
# define FMT_API __declspec(dllexport) # define FMT_API __declspec(dllexport)
# elif defined(FMT_SHARED) # elif defined(FMT_SHARED)
# define FMT_API __declspec(dllimport) # define FMT_API __declspec(dllimport)
# define FMT_EXTERN_TEMPLATE_API FMT_API
# endif # endif
#endif #endif
#ifndef FMT_API #ifndef FMT_API
# define FMT_API # define FMT_API
#endif #endif
#ifndef FMT_EXTERN_TEMPLATE_API
# define FMT_EXTERN_TEMPLATE_API
#endif
#ifndef FMT_ASSERT #ifndef FMT_ASSERT
# define FMT_ASSERT(condition, message) assert((condition) && message) # define FMT_ASSERT(condition, message) assert((condition) && message)