source: flex_extract.git/Source/Python/install.py @ 94d3227

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#*******************************************************************************
# @Author: Leopold Haimberger (University of Vienna)
#
# @Date: November 2015
#
# @Change History:
#
#    February 2018 - Anne Philipp (University of Vienna):
#        - applied PEP8 style guide
#        - added documentation
#        - moved install_args_and_control in here
#        - splitted code in smaller functions
#        - delete fortran build files in here instead of compile job script
#        - changed static path names to variables from config file
#        - splitted install function into several smaller pieces
#        - use of tarfile package in python
#    June 2020 - Anne Philipp
#        - renamed "convert" functions to "fortran" functions
#        - reconfigured mk_tarball to select *.template files instead
#          of *.nl and *.temp
#        - added check for makefile settings
#    August 2020 - Leopold Haimberger
#        - added a new installation section for system installation (if-else block)
#        - read new argument from command line
#        - write .setup.rc for a system installation into Run directory
#        - copy executables to system path and user files to user path
#    July 2022 - Anne Tipka (formerly Philipp)
#        - BugFix: sysinstalldir must be defined in related else path
#        - template files are now using $HOME and $SCRATCH and hence don't
#          need ecmwf user group id. Eliminated from function mk_compile_job
#          and mk_job_template
#
# @License:
#    (C) Copyright 2014-2020.
#    Anne Philipp, Leopold Haimberger
#
#    SPDX-License-Identifier: CC-BY-4.0
#
#    This work is licensed under the Creative Commons Attribution 4.0
#    International License. To view a copy of this license, visit
#    http://creativecommons.org/licenses/by/4.0/ or send a letter to
#    Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
#
# @Methods:
#    main
#    get_install_cmdline_args
#    install_via_gateway
#    check_install_conditions
#    mk_tarball
#    un_tarball
#    mk_env_vars
#    mk_compilejob
#    mk_job_template
#    del_fortran_build
#    mk_fortran_build
#
#*******************************************************************************
'''This script installs the flex_extract program.

Depending on the selected installation environment (locally or on the
ECMWF server ecgate or cca) the program extracts the command line
arguments and the CONTROL file parameter and prepares the corresponding
environment.
The necessary files are collected in a tar ball and placed
at the target location. There, is is untared, the environment variables are
set, and the Fortran code is compiled.
If the ECMWF environment is selected, a job script is prepared and submitted
for the remaining configurations after putting the tar ball on the
target ECMWF server.

Type: install.py --help
to get information about command line parameters.
Read the documentation for usage instructions.
'''

# ------------------------------------------------------------------------------
# MODULES
# ------------------------------------------------------------------------------
from __future__ import print_function

import os
import sys
import subprocess
import tarfile
import shutil
from argparse import ArgumentParser, ArgumentDefaultsHelpFormatter

# software specific classes and modules from flex_extract
import _config
from Classes.ControlFile import ControlFile
from Classes.UioFiles import UioFiles
from Mods.tools import (make_dir, put_file_to_ecserver, submit_job_to_ecserver,
                        silent_remove, execute_subprocess, none_or_str,
                        overwrite_lines_in_file, check_for_string_in_file,
                        submit_sbatch_job)

# ------------------------------------------------------------------------------
# FUNCTIONS
# ------------------------------------------------------------------------------
def main():
    '''Controls the installation process. Calls the installation function
    if target is specified.

    Parameters
    ----------

    Return
    ------
    '''

    args = get_install_cmdline_args()
    c = ControlFile(args.controlfile)
    c.assign_args_to_control(args)
    check_install_conditions(c)
    
    if c.install_target.lower() not in ['local', 'syslocal']:  # ecmwf servers e.g. ecgate (ecs) and hpc
        install_via_gateway(c)
    else: # local
        install_local(c)

    print("SUCCESS: INSTALLATION FINISHED!")

    return

def get_install_cmdline_args():
    '''Decomposes the command line arguments and assigns them to variables.
    Apply default values for arguments not present.

    Parameters
    ----------

    Return
    ------
    args : Namespace
        Contains the commandline arguments from script/program call.
    '''
    parser = ArgumentParser(description='Install flex_extract software '
                                        'locally or on ECMWF machines',
                            formatter_class=ArgumentDefaultsHelpFormatter)

    parser.add_argument('--target', dest='install_target',
                        type=none_or_str, default=None,
                        help="Valid targets: syslocal | local | ecgate | cca | \
                        ccb | ecs | hpc , the latter 5 are at ECMWF servers")
    parser.add_argument("--makefile", dest="makefile",
                        type=none_or_str, default=None,
                        help='Name of makefile for compiling the '
                        'Fortran program')
    parser.add_argument("--ecuid", dest="ecuid",
                        type=none_or_str, default=None,
                        help='User id at ECMWF')
    parser.add_argument("--ecgid", dest="ecgid",
                        type=none_or_str, default=None,
                        help='Group id at ECMWF')
    parser.add_argument("--gateway", dest="gateway",
                        type=none_or_str, default=None,
                        help='Name of the local gateway server')
    parser.add_argument("--destination", dest="destination",
                        type=none_or_str, default=None,
                        help='ecaccess association, e.g. '
                        'myUser@genericSftp')

    parser.add_argument("--installdir", dest="installdir",
                        type=none_or_str, default=None,
                        help='Root (user) directory of the '
                        'flex_extract installation')
    parser.add_argument("--sysinstalldir", dest="sysinstalldir",
                        type=none_or_str, default=None,
                        help='System installation path; where '
                        'executables are stored.')

    # arguments for job submission to ECMWF, only needed by submit.py
    parser.add_argument("--job_template", dest='job_template',
                        type=none_or_str, default="job.template",
                        help='Rudimentary template file to create a batch '
                        'job template for submission to ECMWF servers')

    parser.add_argument("--controlfile", dest="controlfile",
                        type=none_or_str, default='CONTROL_EA5',
                        help="A file that contains all CONTROL parameters.")

    args = parser.parse_args()

    return args


def install_via_gateway(c):
    '''Prepare data transfer to remote gateway and submit a job script which will
    install everything on the remote gateway.

    Parameters
    ----------
    c : ControlFile
        Contains all the parameters of CONTROL file and
        command line.

    Return
    ------

    '''

    tarball_name = _config.FLEXEXTRACT_DIRNAME + '.tar'
    tar_file = os.path.join(_config.PATH_FLEXEXTRACT_DIR, tarball_name)

    mk_compilejob(c.makefile, c.ecuid, c.installdir)

    mk_job_template(c.ecuid, c.installdir)

    mk_env_vars(c.ecuid, c.ecgid, c.gateway, c.destination)

    mk_tarball(tar_file, c.install_target)

    put_file_to_ecserver(_config.PATH_FLEXEXTRACT_DIR, tarball_name)

#    submit_sbatch_job(os.path.join(_config.PATH_REL_JOBSCRIPTS, 
#                                   _config.FILE_INSTALL_COMPILEJOB))

    submit_job_to_ecserver(c.install_target,
                           os.path.join(_config.PATH_REL_JOBSCRIPTS,
                                        _config.FILE_INSTALL_COMPILEJOB))

    silent_remove(tar_file)

    print('Job compilation script has been submitted to ecgate for ' +
          'installation in ' + c.installdir +
          '/' + _config.FLEXEXTRACT_DIRNAME)
    print('You should get an email with subject "flexcompile" within ' +
          'the next few minutes!')

    return

def install_local(c):
    '''Perform the actual installation on a local machine.

    Parameters
    ----------
    c : ControlFile
        Contains all the parameters of CONTROL file and
        command line.

    Return
    ------

    '''

    tar_file = os.path.join(_config.PATH_FLEXEXTRACT_DIR,
                            _config.FLEXEXTRACT_DIRNAME + '.tar')

    # this is standard installation into a single directory
    if c.install_target == 'local':
        c.installdir = os.path.abspath(os.path.expandvars(os.path.expanduser(
            c.installdir)))

        # installation into the current directory
        if os.path.abspath(_config.PATH_FLEXEXTRACT_DIR) == c.installdir:
            print('WARNING: installdir has not been specified')
            print('flex_extract will be installed in current dir by compiling the ' +
                  'Fortran source in ' + _config.PATH_FORTRAN_SRC)
            os.chdir(_config.PATH_FORTRAN_SRC)
        # installation into a different path
        elif os.path.abspath(_config.PATH_FLEXEXTRACT_DIR) != c.installdir :

            # creates the target working directory for flex_extract
            mk_tarball(tar_file, c.install_target)
            make_dir(os.path.join(c.installdir,
                                  _config.FLEXEXTRACT_DIRNAME))
            os.chdir(os.path.join(c.installdir,
                                  _config.FLEXEXTRACT_DIRNAME))
            un_tarball(tar_file)
            os.chdir(os.path.join(c.installdir,
                                  _config.FLEXEXTRACT_DIRNAME,
                                  _config.PATH_REL_FORTRAN_SRC))

        # Create Fortran executable
        print('Install ' +  _config.FLEXEXTRACT_DIRNAME + ' software at ' +
              c.install_target + ' in directory ' + c.installdir + '\n')

        del_fortran_build('.')
        mk_fortran_build('.', c.makefile)
        os.chdir('../../')
        # make sure that the correct calling of submit.py script is in run_local.sh
        overwrite_lines_in_file('Run/run_local.sh',
                                'pyscript=', 'pyscript=../Source/Python/submit.py\n')

    # this is system installation were executables and user files are separated
    elif c.install_target == 'syslocal':
        c.sysinstalldir = os.path.abspath(os.path.expandvars(os.path.expanduser(
            c.sysinstalldir)))
        if os.path.abspath(_config.PATH_FLEXEXTRACT_DIR) == c.sysinstalldir :
            sys.exit('ERROR: System installation path is equal to user '
                     'installation path.\n Please change either the system '
                     'installation path or use installation target "local".')
        if os.path.abspath(_config.PATH_FLEXEXTRACT_DIR) == c.installdir :
            print('Flex_extract will be installed in current directory!')
        else: # install user part in different dir
            print('Flex_extract will be installed in ' + c.installdir )

            c.installdir = os.path.join(c.installdir,_config.FLEXEXTRACT_DIRNAME)
            if os.path.isdir(c.installdir):
                shutil.rmtree(c.installdir)

            # copy all files except Python and Fortranfiles to this dir
            shutil.copytree(_config.PATH_FLEXEXTRACT_DIR,
                            c.installdir, symlinks=True)
            shutil.rmtree(os.path.join(c.installdir,'Source'))
            shutil.rmtree(os.path.join(c.installdir,'.git'))
            for x in UioFiles(c.installdir, '*~').files:
                silent_remove(x)

            os.remove(os.path.join(c.installdir,'setup.sh'))
            os.remove(os.path.join(c.installdir,'setup_local.sh'))

        # configure run_local script correctly
        # check if source of system config file is already in run_local.sh,
        # if not, add it
        if not check_for_string_in_file(os.path.join(c.installdir,'Run/run_local.sh'),
                                 'source .setup.rc'):
            overwrite_lines_in_file(os.path.join(c.installdir,'Run/run_local.sh'),
                                    '# PATH TO SUBMISSION SCRIPT',
                                    '# PATH TO SUBMISSION SCRIPT\nsource '+_config.FILE_SYS_CONFIG+'\n')
        # make sure that the correct calling of submit.py script is in run_local.sh
        overwrite_lines_in_file(os.path.join(c.installdir,'Run/run_local.sh'),
                                'pyscript=', 'pyscript=submit.py\n')

        # change permission for file to executable
        execute_subprocess(['chmod', '0775',
                            os.path.join(os.path.abspath(c.installdir),'Run/run_local.sh')])


        # create systemdir
        c.sysinstalldir = os.path.join(c.sysinstalldir,_config.FLEXEXTRACT_DIRNAME)
        if os.path.isdir(c.sysinstalldir):
            shutil.rmtree(c.sysinstalldir)

        # create setup file for running flex_extract with system installation
        with open(os.path.join(os.path.abspath(c.installdir),'Run/.setup.rc'),'w') as fio:
            fio.write('#!/bin/bash \n')
            fio.write('export FLEXEXTRACT_USER_DIR='+os.path.abspath(c.installdir)+'\n')
            fio.write('export PATH='+os.path.abspath(c.sysinstalldir)+'/Python:${PATH}\n')
            fio.write('export PATH='+os.path.abspath(c.sysinstalldir)+':${PATH}\n')

        # copy all Python and Fortranfiles to this dir
        shutil.copytree(_config.PATH_SOURCES, c.sysinstalldir, symlinks=True)

        os.chdir(os.path.join(c.sysinstalldir,'Fortran'))
        # Create Fortran executable
        print('Install ' +  _config.FLEXEXTRACT_DIRNAME + ' software as ' +
              c.install_target + ' in directory ' +
              os.path.abspath(c.sysinstalldir) + '\n')

        del_fortran_build('.')
        mk_fortran_build('.', c.makefile)

        outfile = [x for x in UioFiles('.','*.out').files]
        test=os.path.join(c.sysinstalldir,'calc_etadot')
        if len(outfile) != 1:
            print('WARNING: Multiple executables for Fortran code are available!')
        # move executable one dir up and delete Fortran dir
        os.chdir('..')
        shutil.move(outfile[0], os.path.join(c.sysinstalldir,'calc_etadot'))
        shutil.rmtree(os.path.join(os.path.abspath(c.sysinstalldir),'Fortran'))

    os.chdir(_config.PATH_FLEXEXTRACT_DIR)
    if os.path.isfile(tar_file):
        os.remove(tar_file)

    return


def check_install_conditions(c):
    '''Checks necessary attributes and conditions
    for the installation, e.g. whether they exist and contain values.
    Otherwise set default values.

    Parameters
    ----------
    c : ControlFile
        Contains all the parameters of CONTROL file and
        command line.


    Return
    ------

    '''

    if c.install_target and \
       c.install_target not in _config.INSTALL_TARGETS:
        print('ERROR: unknown or missing installation target ')
        print('target: ', c.install_target)
        print('please specify correct installation target ' +
              str(_config.INSTALL_TARGETS))
        print('use -h or --help for help')
        sys.exit(1)

    if c.install_target and c.install_target not in ['local', 'syslocal']:
        if not c.ecgid or not c.ecuid:
            print('Please enter your ECMWF user id and group id '
                  ' with command line options --ecuid --ecgid')
            print('Try "' + sys.argv[0].split('/')[-1] + \
                  ' -h" to print usage information')
            print('Please consult ecaccess documentation or ECMWF user '
                  'support for further details.\n')
            sys.exit(1)
        if not c.gateway or not c.destination:
            print('WARNING: Parameters GATEWAY and DESTINATION were '
                  'not properly set for working on ECMWF server. \n'
                  'There will be no transfer of output files to the '
                  'local gateway server possible!')
        if not c.installdir:
            c.installdir = '${HOME}'
    elif c.install_target == 'local':
        if not c.installdir:
            c.installdir = _config.PATH_FLEXEXTRACT_DIR
    elif c.install_target == 'syslocal':
        if not c.installdir:
            c.installdir = _config.PATH_FLEXEXTRACT_DIR
        if not c.sysinstalldir:
            print('ERROR: System installation was selected but '
                  'no system installation path was defined.')
            sys.exit()

    if not c.makefile:
        print('WARNING: no makefile was specified.')
        if c.install_target == 'local':
            c.makefile = 'makefile_local_gfortran'
            print('WARNING: default makefile selected: makefile_local_gfortan')
        elif c.install_target == 'ecgate':
            c.makefile = 'makefile_ecgate'
            print('WARNING: default makefile selected: makefile_ecgate')
        elif c.install_target == 'cca' or \
             c.install_target == 'ccb':
            c.makefile = 'makefile_cray'
            print('WARNING: default makefile selected: makefile_cray')
        else:
            pass

    return


def mk_tarball(tarball_path, target):
    '''Creates a tarball with all necessary files which need to be sent to the
    installation directory.
    It does not matter whether this is local or remote.
    Collects all Python files, the Fortran source and makefiles,
    the ECMWF_ENV file, the CONTROL files as well as the
    template files.

    Parameters
    ----------
    tarball_path : str
        The complete path to the tar file which will contain all
        relevant data for flex_extract.

    target : str
        The queue where the job is submitted to.

    Return
    ------

    '''

    print('Create tarball ...')

    # change to FLEXEXTRACT directory so that the tar can contain
    # relative pathes to the files and directories
    ecd = _config.PATH_FLEXEXTRACT_DIR + '/'
    os.chdir(ecd)

    # get lists of the files to be added to the tar file
    if target == 'local':
        ecmwf_env_file = []
        runfile = [os.path.relpath(x, ecd)
                   for x in UioFiles(_config.PATH_REL_RUN_DIR,
                                     'run_local.sh').files]
    else:
        ecmwf_env_file = [_config.PATH_REL_ECMWF_ENV]
        runfile = [os.path.relpath(x, ecd)
                   for x in UioFiles(_config.PATH_REL_RUN_DIR,
                                     'run.sh').files]

    pyfiles = [os.path.relpath(x, ecd)
               for x in UioFiles(_config.PATH_REL_PYTHON_SRC, '*py').files]
    pytestfiles = [os.path.relpath(x, ecd)
                   for x in UioFiles(_config.PATH_REL_PYTHONTEST_SRC, '*py').files]
    controlfiles = [os.path.relpath(x, ecd)
                    for x in UioFiles(_config.PATH_REL_CONTROLFILES,
                                      'CONTROL*').files]
    testfiles = [os.path.relpath(x, ecd)
                 for x in UioFiles(_config.PATH_REL_TEST+"/Installation", '*').files]
    tempfiles = [os.path.relpath(x, ecd)
                 for x in UioFiles(_config.PATH_REL_TEMPLATES, '*.template').files]
    gribtable = [os.path.relpath(x, ecd)
                 for x in UioFiles(_config.PATH_REL_TEMPLATES, '*grib*').files]
    ffiles = [os.path.relpath(x, ecd)
              for x in UioFiles(_config.PATH_REL_FORTRAN_SRC, '*.f90').files]
    hfiles = [os.path.relpath(x, ecd)
              for x in UioFiles(_config.PATH_REL_FORTRAN_SRC, '*.h').files]
    makefiles = [os.path.relpath(x, ecd)
                 for x in UioFiles(_config.PATH_REL_FORTRAN_SRC, 'makefile*').files]
    jobdir = [os.path.relpath(x, ecd)
               for x in UioFiles(_config.PATH_REL_JOBSCRIPTS, '*.md').files]

    # concatenate single lists to one for a better looping
    filelist = pyfiles + pytestfiles + controlfiles + tempfiles + \
               ffiles + gribtable + hfiles + makefiles + ecmwf_env_file + \
               runfile + jobdir + testfiles +\
               ['CODE_OF_CONDUCT.md', 'LICENSE.md', 'README.md']

    # create installation tar-file
    exclude_files = [".ksh", ".tar"]
    try:
        with tarfile.open(tarball_path, "w:gz") as tar_handle:
            for filename in filelist:
                tar_handle.add(filename, recursive=False,
                               filter=lambda tarinfo: None
                               if os.path.splitext(tarinfo.name)[1]
                               in exclude_files
                               else tarinfo)
    except tarfile.TarError as e:
        print('... ERROR: ' + str(e))

        sys.exit('\n... error occured while trying to create the tar-file ' +
                 str(tarball_path))

    return


def un_tarball(tarball_path):
    '''Extracts the given tarball into current directory.

    Parameters
    ----------
    tarball_path : str
        The complete path to the tar file which will contain all
        relevant data for flex_extract.

    Return
    ------

    '''

    print('Untar ...')

    try:
        with tarfile.open(tarball_path) as tar_handle:
            tar_handle.extractall()
    except tarfile.TarError as e:
        sys.exit('\n... error occured while trying to read tar-file ' +
                 str(tarball_path))
    except OSError as e:
        print('... ERROR CODE: ' + str(e.errno))
        print('... ERROR MESSAGE:\n \t ' + str(e.strerror))

        sys.exit('\n... error occured while trying to read tar-file ' +
                 str(tarball_path))

    return

def mk_env_vars(ecuid, ecgid, gateway, destination):
    '''Creates a file named ECMWF_ENV which contains the
    necessary environmental variables at ECMWF servers.
    It is based on the template ECMWF_ENV.template.

    Parameters
    ----------
    ecuid : str
        The user id on ECMWF server.

    ecgid : str
        The group id on ECMWF server.

    gateway : str
        The gateway server the user is using.

    destination : str
        The remote destination which is used to transfer files
        from ECMWF server to local gateway server.

    Return
    ------

    '''
    from genshi.template.text import NewTextTemplate
    from genshi.template import  TemplateLoader
    from genshi.template.eval import UndefinedError

    try:
        loader = TemplateLoader(_config.PATH_TEMPLATES, auto_reload=False)
        ecmwfvars_template = loader.load(_config.TEMPFILE_USER_ENVVARS,
                                         cls=NewTextTemplate)

        stream = ecmwfvars_template.generate(user_name=ecuid,
                                             user_group=ecgid,
                                             gateway_name=gateway,
                                             destination_name=destination
                                            )
    except UndefinedError as e:
        print('... ERROR ' + str(e))

        sys.exit('\n... error occured while trying to generate template ' +
                 _config.PATH_ECMWF_ENV)
    except OSError as e:
        print('... ERROR CODE: ' + str(e.errno))
        print('... ERROR MESSAGE:\n \t ' + str(e.strerror))

        sys.exit('\n... error occured while trying to generate template ' +
                 _config.PATH_ECMWF_ENV)

    try:
        with open(_config.PATH_ECMWF_ENV, 'w') as f:
            f.write(stream.render('text'))
    except OSError as e:
        print('... ERROR CODE: ' + str(e.errno))
        print('... ERROR MESSAGE:\n \t ' + str(e.strerror))

        sys.exit('\n... error occured while trying to write ' +
                 _config.PATH_ECMWF_ENV)

    return

def mk_compilejob(makefile, ecuid, fp_root):
    '''Modifies the original job template file so that it is specified
    for the user and the environment were it will be applied. Result
    is stored in a new file "compilejob.ksh" in the Jobscript directory.

    Parameters
    ----------
    makefile : str
        Name of the makefile which should be used to compile the Fortran
        program.

    ecuid : str
        The user id on ECMWF server.

    fp_root : str
       Path to the root directory of FLEXPART environment or flex_extract
       environment.

    Return
    ------

    '''
    from genshi.template.text import NewTextTemplate
    from genshi.template import  TemplateLoader
    from genshi.template.eval import  UndefinedError

    if fp_root == '../':
        fp_root = '$HOME'

    try:
        loader = TemplateLoader(_config.PATH_TEMPLATES, auto_reload=False)
        compile_template = loader.load(_config.TEMPFILE_INSTALL_COMPILEJOB,
                                       cls=NewTextTemplate)

        stream = compile_template.generate(
            username=ecuid,
            version_number=_config._VERSION_STR,
            fp_root_scripts=fp_root,
            makefile=makefile,
            fortran_program=_config.FORTRAN_EXECUTABLE
        )
    except UndefinedError as e:
        print('... ERROR ' + str(e))

        sys.exit('\n... error occured while trying to generate template ' +
                 _config.TEMPFILE_INSTALL_COMPILEJOB)
    except OSError as e:
        print('... ERROR CODE: ' + str(e.errno))
        print('... ERROR MESSAGE:\n \t ' + str(e.strerror))

        sys.exit('\n... error occured while trying to generate template ' +
                 _config.TEMPFILE_INSTALL_COMPILEJOB)

    try:
        compilejob = os.path.join(_config.PATH_JOBSCRIPTS,
                                  _config.FILE_INSTALL_COMPILEJOB)

        with open(compilejob, 'w') as f:
            f.write(stream.render('text'))
    except OSError as e:
        print('... ERROR CODE: ' + str(e.errno))
        print('... ERROR MESSAGE:\n \t ' + str(e.strerror))

        sys.exit('\n... error occured while trying to write ' +
                 compilejob)

    return

def mk_job_template(ecuid, fp_root):
    '''Modifies the original job template file so that it is specified
    for the user and the environment were it will be applied. Result
    is stored in a new file.

    Parameters
    ----------
    ecuid : str
        The user id on ECMWF server.

    fp_root : str
       Path to the root directory of FLEXPART environment or flex_extract
       environment.

    Return
    ------

    '''
    from genshi.template.text import NewTextTemplate
    from genshi.template import  TemplateLoader
    from genshi.template.eval import  UndefinedError

    fp_root_path_to_python = os.path.join(fp_root,
                                          _config.FLEXEXTRACT_DIRNAME,
                                          _config.PATH_REL_PYTHON_SRC)
    if '$' in fp_root_path_to_python:
        ind = fp_root_path_to_python.index('$')
        fp_root_path_to_python = fp_root_path_to_python[0:ind] + '$' + \
                                 fp_root_path_to_python[ind:]

    try:
        loader = TemplateLoader(_config.PATH_TEMPLATES, auto_reload=False)
        compile_template = loader.load(_config.TEMPFILE_INSTALL_JOB,
                                       cls=NewTextTemplate)

        stream = compile_template.generate(
            username=ecuid,
            version_number=_config._VERSION_STR,
            fp_root_path=fp_root_path_to_python,
        )
    except UndefinedError as e:
        print('... ERROR ' + str(e))

        sys.exit('\n... error occured while trying to generate template ' +
                 _config.TEMPFILE_INSTALL_JOB)
    except OSError as e:
        print('... ERROR CODE: ' + str(e.errno))
        print('... ERROR MESSAGE:\n \t ' + str(e.strerror))

        sys.exit('\n... error occured while trying to generate template ' +
                 _config.TEMPFILE_INSTALL_JOB)


    try:
        tempjobfile = os.path.join(_config.PATH_TEMPLATES,
                                   _config.TEMPFILE_JOB)

        with open(tempjobfile, 'w') as f:
            f.write(stream.render('text'))
    except OSError as e:
        print('... ERROR CODE: ' + str(e.errno))
        print('... ERROR MESSAGE:\n \t ' + str(e.strerror))

        sys.exit('\n... error occured while trying to write ' +
                 tempjobfile)

    return

def del_fortran_build(src_path):
    '''Clean up the Fortran source directory and remove all
    build files (e.g. \*.o, \*.mod and FORTRAN EXECUTABLE)

    Parameters
    ----------
    src_path : str
        Path to the fortran source directory.

    Return
    ------

    '''

    modfiles = UioFiles(src_path, '*.mod')
    objfiles = UioFiles(src_path, '*.o')
    exefile = UioFiles(src_path, _config.FORTRAN_EXECUTABLE)

    modfiles.delete_files()
    objfiles.delete_files()
    exefile.delete_files()

    return

def mk_fortran_build(src_path, makefile):
    '''Compiles the Fortran code and generates the executable.

    Parameters
    ----------
    src_path : str
        Path to the fortran source directory.

    makefile : str
        The name of the makefile which should be used.

    Return
    ------

    '''

    try:
        print('Using makefile: ' + makefile)
        p = subprocess.Popen(['make', '-f',
                              os.path.join(src_path, makefile)],
                             stdin=subprocess.PIPE,
                             stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE,
                             bufsize=1)
        pout, perr = p.communicate()
        print(pout.decode())
        if p.returncode != 0:
            print(perr.decode())
            print('Please edit ' + makefile +
                  ' or try another makefile in the src directory.')
            print('Most likely ECCODES_INCLUDE_DIR, ECCODES_LIB '
                  'and EMOSLIB must be adapted.')
            print('Available makefiles:')
            print(UioFiles(src_path, 'makefile*'))
            sys.exit('Compilation failed!')
    except ValueError as e:
        print('ERROR: makefile call failed:')
        print(e)
    else:
        execute_subprocess(['ls', '-l',
                            os.path.join(src_path, _config.FORTRAN_EXECUTABLE)],
                           error_msg='FORTRAN EXECUTABLE COULD NOT BE FOUND!')

    return


if __name__ == "__main__":
    main()