HDF5

Peano does not need hdf5. There's no generic input file format, and it can write its own mesh files without hdf5. Things are different if you want to dump hdf5, or if you use an extension/toolbox which requires hdf5. In this case, you have to enable hdf5 in the configuration (pass in –with-hdf5) and ensure that your CXXFLAGS and LDFLAGS include all libraries.

For the latter, different systems have other paths. On local Ubuntu workstations, we typically use something similar to

-L/usr/lib/x86_64-linux-gnu/hdf5/serial -lhdf5 -lhdf5_cpp

Please note that two hdf5 libraries are required: the hdf5 library which is written in C and the C++ counterpart.

NetCDF

NetCDF might be required by some applications.

If you are unsure where the NetCDF headers and libraries are located on your system, you can use pkg-config:

export NETCDF_INCLUDE_DIR=$(pkg-config --cflags-only-I netcdf)

export NETCDF_LIBRARY_DIR=$(pkg-config --libs-only-L --libs-only-l netcdf)

Then use these variables to configure Peano:

CC=gcc CXX=g++ ./configure --with-netcdf CXXFLAGS="-std=c++20 -O3 $NETCDF_INCLUDE_DIR" LDFLAGS="$NETCDF_LIBRARY_DIR"

If all works, then in the configuration output log you should see

checking for netcdf... yes
...
checking for netcdf.h... yes
checking for nc_open in -lnetcdf... yes

Table of Contents

HDF5

NetCDF