[QE-developers] Quantum Espresso Installation

[sujit]

Hello,

This might be a generic question but I was hoping to get some help on installation of quantum espresso on my machine. I was not sure how to do ./configure properly (In the userguide it has an example of this: ./configure MPIF90=mpif90 FFLAGS="-O2 -assume byterecl" CC=gcc CFLAGS=-O3 LDFLAGS=-static).

I am confused about FFLAGS, CFLAGS and LDFLAGS. I don't have any idea about what they really mean.

I am on linux. I have following on my machine:

Fortran Compiler: gfortran ver 4:12.2.0-3
BLAS: ver 3.11.0-2 (installed using apt install libblas-dev)
LAPACK: ver 3.11.0-2 ( installed using apt install liblapack-dev)
fftw: ver 3.3.10-1 (installed using apt install libfftw3-dev)
MPI: ver 4.1.4-3+b1 (installed using apt install libopenmpi-dev)
libxc: ver 5.2.3-1 (installed using apt install libxc-dev)
hdf5: ver 1.10.8+repack1-1(installed using apt install libhdf5-dev)
C compiler: gcc ver 4:12.2.0-3

Thanks a lot!

Best,
John

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