[Pw_forum] Fortan compiler cannot create executables

Elie Moujaes elie.moujaes at hotmail.co.uk
Sun Apr 17 01:31:35 CEST 2011

Dear Masoud,

thanks very much for your help. I knew that I need to change the path but i did not know how so thanks for thr info. Unfortunately, my CSH shell does not support the EXPORT command so whenever I use it it outputs : Export: command not found. I do not have a /bin because this is running on my network account..I even tried before to use ln -s to copy stuff but permission was denied. is there any other command you are aware of for a csh/sh shell (other than export I mean)?

Thank you


Date: Sat, 16 Apr 2011 14:11:00 +0430
From: masoudnahali at gmail.com
To: pw_forum at pwscf.org
Subject: Re: [Pw_forum] Fortan compiler cannot create executables

Dear Elie

Try "export PATH=$PATH:/path/to/your/directory/where/g95/installed" then update your database (updatedb command) and restart your computer. Also, you can copy g95 binary files from where you have installed the g95 to /bin.You should examine "g95" or "gfortran" commands in your linux console before trying to compile the QE. I hope it helps.     

Best Wishes


Masoud Nahali, Ph. D Student
Sharif University of Technology

On Sat, Apr 16, 2011 at 11:57 AM, Elie Moujaes wrote :

Hello everyone,

 I am trying to re-install quantum espresso-4.3 on the University's LINUX interface (because of a recent crash and I lost most of my files).

 when I "sudo ./configure ",  It is giving an error stating that :

checking building system type... x86_64-unknown-linux-gnu

checking architecture... x86_64

checking for ifort.. no

checking for pgf90... no

checking for pathf95.. no

checking for sunf95.. no

checking for openf95... no

checking for gfortran... no

checking for g95... no

checking for f90... no

checking for Fortran compiler default output... configure: error: Fortran compiler cannot create executables

See `config.log' for more details.

I have already installed g95.  I really don't know why

this error is coming.

 Please can anyone help.


Elie Moujaes

University of Nottingham



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