Maik,
   On windows using VS in 1.8.8, we include a function to provide gettimeofday. 
It is defined in the src\H5win32defs.h file, 
look for the #ifdef H5_HAVE_VISUAL_STUDIO
section within the #ifdef H5_HAVE_WIN32_API section. 

The function is sourced in the src\H5system.c file.

CMake should properly set the two defines " H5_HAVE_VISUAL_STUDIO" and 
"H5_HAVE_WIN32_API", check the generated H5pubconf.h in the build folder.

Allen

> Hello,
> 
> I'm in the process of upgrading our HDF5 sources from 1.8.5 to 1.8.8
> (both built with CMake).   It worked flawlessly on Linux, but I've
> encountered an oddity on Windows, where we use MSVC along with Intel's
> Fortran compiler.   Linkinh an application causes the linker to
> complain about the symbol  _gettimeofday missing in function
> _HDFP_log_open.  This isn't surprising, since gettimeofday is a POSIX
> function and to my knowledge isn't provided by the runtime libs coming
> with MSVC.
> 
> Checking the code in H5FDlog.c showed that the  H5_HAVE_GETTIMEOFDAY
> preprocessor symbol must be related.  Searching for this string in the
> hdf-1.8.5 and 1.8.8 directories lead me to the following in
> release_docs/HISTORY-1_8.txt in hdf5-1.8.8
> 
>     Bug Fixes since HDF5-1.8.6
>     ==========================
> 
>         - Fixed the definition of H5_HAVE_GETTIMEOFDAY on Windows so that
>           HDgettimeofday() is defined and works properly.  Bug HDFFV-5931
>           (DER - 2011/04/14)
> 
> This is change is done for CMake in  config/cmake/ConfigureChecks.cmake:
> 
>     IF (WINDOWS)
>      ..
>       SET (H5_HAVE_GETTIMEOFDAY 1)
>       ..
>     ENDIF (WINDOWS)
> 
> und for VisualStudio in  windows/src/H5pubconf.h
> 
>     #define H5_HAVE_GETTIMEOFDAY 1
> 
> though I haven't tried to built using the VisualStudio files.
> 
> 
> I'm not sure what's the right thing to do for me here.  Can I just
> comment out the SET (H5_HAVE_GETTIMEOFDAY 1) ?  Or am I supposed to
> link in a 3rd party library which provides the gettimeofday?
> 
> 
> Best Regards,
> Maik Beckmann
> 
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