Compile error when using option netcdf4_internal on Bull Intel with mpiifort

[ssenesi]

In that case, with release 549, I get a 'catastrophic error' (I didn't choose that qualifier myself !) :

fcm_internal compile:C netcdf /home/gmgec/mrgu/senesis/SAVE/XIOS_mt_par/extern/netcdf4/mmapio.c mmapio.o 1
mpiicc -o mmapio.o -DUSING_NETCDF_PAR -DUSING_NETCDF_INTERNAL -I/home/gmgec/mrgu/senesis/SAVE/XIOS_mt_par/inc -ansi -diag-disable 1125 -diag-disable 279 -openmp -openmp-threadprivate compat -openmp-report2 -O3 -D BOOST_DISABLE_ASSERTS -I/home/gmgec/mrgu/senesis/SAVE/XIOS_mt_par/extern/netcdf4 -I/opt/softs/libraries/ICC13.1.4.183/hdf5-1.8.11_par/include -I/home/gmgec/mrgu/senesis/SAVE/XIOS_mt_par/extern/src_netcdf -I/home/gmgec/mrgu/senesis/SAVE/XIOS_mt_par/extern/boost/include -I/home/gmgec/mrgu/senesis/SAVE/XIOS_mt_par/extern/rapidxml/include -I/home/gmgec/mrgu/senesis/SAVE/XIOS_mt_par/extern/blitz/include -c /home/gmgec/mrgu/senesis/SAVE/XIOS_mt_par/extern/netcdf4/mmapio.c
/home/gmgec/mrgu/senesis/SAVE/XIOS_mt_par/extern/netcdf4/mmapio.c(38): catastrophic error: #error directive: mmap not fully implemented: missing MAP_ANONYMOUS

#error mmap not fully implemented: missing MAP_ANONYMOUS

[rlacroix]

I'm not completely sure but it might be because using mpiicc engages some sort of stricter compilation mode. You could try adding -std=gnu89 or -std=gnu99 to the compiler definition and see if that helps.

[rlacroix]

I missed something last time, I'm pretty sure -ansi will engage a stricter mode than what GCC and ICC use by default. Have you tried without this?

[ssenesi]

Discarding option -ansi allows to compile and link. Thanks a lot. You could improve the 'usage' section of make_xios by stating expliclty that netcdf4_internal option brings a parallel version of NetCDF

[rlacroix]

Good to know it fixed your issue!

About the internal NetCDF library, it was added to solve some issues with NetCDF by having our own patched version of the code. We think that most of those issues, if not all, have now been fixed in the official version so we might remove it in the near future to avoid possible confusions.