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#!/usr/bin/env python
"""
Install.py tool to download, unpack, and point to the Eigen library
used to automate the steps described in the README file in this dir
"""
from __future__ import print_function
import sys, os, glob, shutil, tarfile
from argparse import ArgumentParser
sys.path.append('..')
from install_helpers import fullpath, geturl, checkmd5sum
parser = ArgumentParser(prog='Install.py',
description="LAMMPS library build wrapper script")
# settings
version = '3.4.0'
tarball = "eigen.tar.gz"
# known checksums for different Eigen versions. used to validate the download.
checksums = { \
'3.4.0' : '4c527a9171d71a72a9d4186e65bea559', \
'3.3.9' : '609286804b0f79be622ccf7f9ff2b660', \
'3.3.7' : '9e30f67e8531477de4117506fe44669b' \
}
# help message
HELP = """
Syntax from src dir: make lib-smd args="-b"
or: make lib-smd args="-p /usr/include/eigen3"
Syntax from lib dir: python Install.py -b
or: python Install.py -p /usr/include/eigen3"
or: python Install.py -v 3.4.0 -b
Example:
make lib-smd args="-b" # download/build in default lib/smd/eigen-eigen-*
make lib-smd args="-p /usr/include/eigen3" # use existing Eigen installation in /usr/include/eigen3
"""
pgroup = parser.add_mutually_exclusive_group()
pgroup.add_argument("-b", "--build", action="store_true",
help="download and build the Eigen3 library")
pgroup.add_argument("-p", "--path",
help="specify folder of existing Eigen installation")
parser.add_argument("-v", "--version", default=version,
help="set version of Eigen to download and build (default: %s)" % version)
args = parser.parse_args()
# print help message and exit, if neither build nor path options are given
if not args.build and not args.path:
parser.print_help()
sys.exit(HELP)
homepath = fullpath(".")
eigenpath = os.path.join(homepath, "eigen3")
buildflag = args.build
pathflag = args.path is not None
version = args.version
if pathflag:
eigenpath = args.path
if not os.path.isdir(eigenpath):
sys.exit("Eigen path %s does not exist" % eigenpath)
eigenpath = fullpath(eigenpath)
# download and unpack Eigen tarball
# use glob to find name of dir it unpacks to
if buildflag:
print("Downloading Eigen ...")
eigentar = os.path.join(homepath, tarball)
url = "https://download.lammps.org/thirdparty/eigen-%s.tar.gz" % version
geturl(url, eigentar)
# verify downloaded archive integrity via md5 checksum, if known.
if version in checksums:
print("checking version %s\n" % version)
if not checkmd5sum(checksums[version], eigentar):
sys.exit("Checksum for Eigen library does not match")
print("Cleaning up old folders ...")
edir = glob.glob(os.path.join(homepath, "eigen-*"))
edir.append(eigenpath)
for one in edir:
if os.path.isdir(one):
shutil.rmtree(one)
print("Unpacking Eigen tarball ...")
if tarfile.is_tarfile(eigentar):
tgz = tarfile.open(eigentar)
tgz.extractall(path=homepath)
os.remove(eigentar)
else:
sys.exit("File %s is not a supported archive" % eigentar)
edir = os.path.join(homepath, "eigen-%s" % version)
os.rename(edir, eigenpath)
# create link in lib/smd to Eigen src dir
print("Creating link to Eigen include folder")
if os.path.isfile("includelink") or os.path.islink("includelink"):
os.remove("includelink")
linkdir = eigenpath
os.symlink(linkdir, 'includelink')
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