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FastMemcpy{,_Avx}.c: Mark memcpy() as dllimport on MinGW and ming… #1

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FastMemcpy{,_Avx}.c: Mark memcpy() as dllimport on MinGW and ming… #1

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10 changes: 10 additions & 0 deletions FastMemcpy.c
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,16 @@
#error it can only be compiled under windows or unix
#endif

#ifdef __MINGW32__
/* On MinGW and mingw-w64 targets, `memcpy()` is imported from MSVCRT.DLL.
* With regard to benchmarking purposes, we have to eliminate the overhead
* of implicit importation by specifying `dllexport` explicitly.
*
* Reference: https://gcc.gnu.org/onlinedocs/gcc/Microsoft-Windows-Function-Attributes.html#index-dllimport-function-attribute
*/
__declspec(dllimport) extern void * memcpy(void *, const void *, size_t);
#endif

#include "FastMemcpy.h"

unsigned int gettime()
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10 changes: 10 additions & 0 deletions FastMemcpy_Avx.c
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,16 @@
#error it can only be compiled under windows or unix
#endif

#ifdef __MINGW32__
/* On MinGW and mingw-w64 targets, `memcpy()` is imported from MSVCRT.DLL.
* With regard to benchmarking purposes, we have to eliminate the overhead
* of implicit importation by specifying `dllexport` explicitly.
*
* Reference: https://gcc.gnu.org/onlinedocs/gcc/Microsoft-Windows-Function-Attributes.html#index-dllimport-function-attribute
*/
__declspec(dllimport) extern void * memcpy(void *, const void *, size_t);
#endif

#include "FastMemcpy_Avx.h"


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