[Users] Compiling on DiRAC DIaL

[Roland Haas]

Hello Matt,

> Cactus/arrangements/ExternalLibraries/PAPI/src/stats.c(20): catastrophic error: cannot open source file "papi.h"
>   #include <papi.h>
> 
> I cannot find the header file anywhere (i.e. in ET or /usr/include)
> so I am not sure how to proceed. Is PAPI a necessary library for ET
> function? 
If you use PAPI_DIR=BUILD to make Cactus build PAPI itself (which you
seem to do) then it will install the created PAPI library to


Cactus/configs/ET_dirac/scratch/external/PAPI

and the include file would be there.

Cactus at that point should set up a include search path to find files
there, which you can check in:

Cactus/configs/ET_dirac/bindings/Configuration/Capabilities/make.PAPI.defn

> Compiling with it excluded from the thornlist gives me
> 
> /usr/bin/ld: cannot find -lsz
> make[1]: ***
> [/lustre/dirac/home/dc-elle1/ET/Cactus/exe/cactus_ET_dirac] Error 1
> 
> which I am not sure is connected as I am compiling from scratch.
That one I suspect is actually being pulled in by HDF5 which can use
the sz library but I have seen systems (Windows using MSYS admittedly)
where the sz library was called szip. 

The actual line that cases the failure is probably this one:

https://github.com/EinsteinToolkit/ExternalLibraries-HDF5/blob/abf8dbf78e767b7e2ae3e96b098af3dceb5dede0/src/detect.sh#L188

You could try two things to avoid this:

1. build your own HDF5 by setting HDF5_DIR=BUILD
2. find out where libsz.so or libsz.a are located (by using he "module
show" command on the HDF5 module or asking the admins) and adding that
directory to HDF5_LIB_DIRS

Please see

https://www.einsteintoolkit.org/thornguide/ExternalLibraries/HDF5/documentation.html

and

https://www.einsteintoolkit.org/usersguide/UsersGuide.html#x1-21000B2.2

for details on these option list variables.

Yours,
Roland

> 
> Thanks,
> 
> Matt
> 


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