Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Fri, 23 Aug 2013 08:50:49 -0500

Hi Mark,

On 08/22/2013 10:21 PM, Mark Rivers wrote:

The problem is that when H5Tpublic.h is being included the macro
H5_DLLVAR is not correctly defined to be "__declspec(dllimport)".
Rather H5_DLLVAR appears to be defined as "extern".  This causes the
linker to be unable to locate these symbols, even though they are
correctly exported by the .lib file.

I just need to figure out why H5_DLLVAR is not being correctly
defined in H5api_adpt.h.  It looks like it should be, but clearly I
am doing something wrong.

Decorators like that are a common issue with Windows builds, EPICS has

the epicsShare* macros defined in shareLib.h which on Windows expand to

__declspec(dllimport) when calling the relevant symbol from a DLL,

__declspec(dllexport) when building the DLL, or to nothing when building

or calling a static library.

You may have to add a command-line argument to the compiler to define

some symbol that tells the header whether the Nexus library is being

built as a DLL, or being called in one. Look in the header that defines

H5_DLLVAR and compare what it's doing with what shareLib.h does.

HTH,

- Andrew
--
Advertising may be described as the science of arresting the human
intelligence long enough to get money from it. -- Stephen Leacock

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System