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|
##############################################################################
# Copyright (c) 2013-2018, Lawrence Livermore National Security, LLC.
# Produced at the Lawrence Livermore National Laboratory.
#
# This file is part of Spack.
# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
# LLNL-CODE-647188
#
# For details, see https://github.com/spack/spack
# Please also see the NOTICE and LICENSE files for our notice and the LGPL.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License (as
# published by the Free Software Foundation) version 2.1, February 1999.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
# conditions of the GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##############################################################################
"""This is where most of the action happens in Spack.
The spack package class structure is based strongly on Homebrew
(http://brew.sh/), mainly because Homebrew makes it very easy to create
packages.
"""
import base64
import contextlib
import copy
import functools
import glob
import hashlib
import inspect
import os
import re
import shutil
import sys
import textwrap
import time
from six import StringIO
from six import string_types
from six import with_metaclass
from ordereddict_backport import OrderedDict
import llnl.util.tty as tty
import spack.config
import spack.paths
import spack.store
import spack.compilers
import spack.directives
import spack.directory_layout
import spack.error
import spack.fetch_strategy as fs
import spack.hooks
import spack.mirror
import spack.mixins
import spack.repo
import spack.url
import spack.util.web
import spack.multimethod
import spack.binary_distribution as binary_distribution
from llnl.util.filesystem import mkdirp, touch, chgrp
from llnl.util.filesystem import working_dir, install_tree, install
from llnl.util.lang import memoized
from llnl.util.link_tree import LinkTree
from llnl.util.tty.log import log_output
from llnl.util.tty.color import colorize
from spack.filesystem_view import YamlFilesystemView
from spack.util.executable import which
from spack.stage import Stage, ResourceStage, StageComposite
from spack.util.environment import dump_environment
from spack.util.package_hash import package_hash
from spack.version import Version
from spack.package_prefs import get_package_dir_permissions, get_package_group
"""Allowed URL schemes for spack packages."""
_ALLOWED_URL_SCHEMES = ["http", "https", "ftp", "file", "git"]
class InstallPhase(object):
"""Manages a single phase of the installation.
This descriptor stores at creation time the name of the method it should
search for execution. The method is retrieved at __get__ time, so that
it can be overridden by subclasses of whatever class declared the phases.
It also provides hooks to execute arbitrary callbacks before and after
the phase.
"""
def __init__(self, name):
self.name = name
self.run_before = []
self.run_after = []
def __get__(self, instance, owner):
# The caller is a class that is trying to customize
# my behavior adding something
if instance is None:
return self
# If instance is there the caller wants to execute the
# install phase, thus return a properly set wrapper
phase = getattr(instance, self.name)
@functools.wraps(phase)
def phase_wrapper(spec, prefix):
# Check instance attributes at the beginning of a phase
self._on_phase_start(instance)
# Execute phase pre-conditions,
# and give them the chance to fail
for callback in self.run_before:
callback(instance)
phase(spec, prefix)
# Execute phase sanity_checks,
# and give them the chance to fail
for callback in self.run_after:
callback(instance)
# Check instance attributes at the end of a phase
self._on_phase_exit(instance)
return phase_wrapper
def _on_phase_start(self, instance):
pass
def _on_phase_exit(self, instance):
# If a phase has a matching last_phase attribute,
# stop the installation process raising a StopIteration
if getattr(instance, 'last_phase', None) == self.name:
raise StopIteration('Stopping at \'{0}\' phase'.format(self.name))
def copy(self):
try:
return copy.deepcopy(self)
except TypeError:
# This bug-fix was not back-ported in Python 2.6
# http://bugs.python.org/issue1515
other = InstallPhase(self.name)
other.run_before.extend(self.run_before)
other.run_after.extend(self.run_after)
return other
class PackageMeta(
spack.directives.DirectiveMeta,
spack.mixins.PackageMixinsMeta
):
"""Conveniently transforms attributes to permit extensible phases
Iterates over the attribute 'phases' and creates / updates private
InstallPhase attributes in the class that is being initialized
"""
phase_fmt = '_InstallPhase_{0}'
_InstallPhase_run_before = {}
_InstallPhase_run_after = {}
def __new__(cls, name, bases, attr_dict):
if 'phases' in attr_dict:
# Turn the strings in 'phases' into InstallPhase instances
# and add them as private attributes
_InstallPhase_phases = [PackageMeta.phase_fmt.format(x) for x in attr_dict['phases']] # NOQA: ignore=E501
for phase_name, callback_name in zip(_InstallPhase_phases, attr_dict['phases']): # NOQA: ignore=E501
attr_dict[phase_name] = InstallPhase(callback_name)
attr_dict['_InstallPhase_phases'] = _InstallPhase_phases
def _flush_callbacks(check_name):
# Name of the attribute I am going to check it exists
attr_name = PackageMeta.phase_fmt.format(check_name)
checks = getattr(cls, attr_name)
if checks:
for phase_name, funcs in checks.items():
try:
# Search for the phase in the attribute dictionary
phase = attr_dict[
PackageMeta.phase_fmt.format(phase_name)]
except KeyError:
# If it is not there it's in the bases
# and we added a check. We need to copy
# and extend
for base in bases:
phase = getattr(
base,
PackageMeta.phase_fmt.format(phase_name),
None
)
if phase is not None:
break
attr_dict[PackageMeta.phase_fmt.format(
phase_name)] = phase.copy()
phase = attr_dict[
PackageMeta.phase_fmt.format(phase_name)]
getattr(phase, check_name).extend(funcs)
# Clear the attribute for the next class
setattr(cls, attr_name, {})
_flush_callbacks('run_before')
_flush_callbacks('run_after')
return super(PackageMeta, cls).__new__(cls, name, bases, attr_dict)
@staticmethod
def register_callback(check_type, *phases):
def _decorator(func):
attr_name = PackageMeta.phase_fmt.format(check_type)
check_list = getattr(PackageMeta, attr_name)
for item in phases:
checks = check_list.setdefault(item, [])
checks.append(func)
setattr(PackageMeta, attr_name, check_list)
return func
return _decorator
def run_before(*phases):
"""Registers a method of a package to be run before a given phase"""
return PackageMeta.register_callback('run_before', *phases)
def run_after(*phases):
"""Registers a method of a package to be run after a given phase"""
return PackageMeta.register_callback('run_after', *phases)
def on_package_attributes(**attr_dict):
"""Decorator: executes instance function only if object has attr valuses.
Executes the decorated method only if at the moment of calling the
instance has attributes that are equal to certain values.
Args:
attr_dict (dict): dictionary mapping attribute names to their
required values
"""
def _execute_under_condition(func):
@functools.wraps(func)
def _wrapper(instance, *args, **kwargs):
# If all the attributes have the value we require, then execute
has_all_attributes = all(
[hasattr(instance, key) for key in attr_dict]
)
if has_all_attributes:
has_the_right_values = all(
[getattr(instance, key) == value for key, value in attr_dict.items()] # NOQA: ignore=E501
)
if has_the_right_values:
func(instance, *args, **kwargs)
return _wrapper
return _execute_under_condition
class PackageViewMixin(object):
"""This collects all functionality related to adding installed Spack
package to views. Packages can customize how they are added to views by
overriding these functions.
"""
def view_source(self):
"""The source root directory that will be added to the view: files are
added such that their path relative to the view destination matches
their path relative to the view source.
"""
return self.spec.prefix
def view_destination(self, view):
"""The target root directory: each file is added relative to this
directory.
"""
return view.root
def view_file_conflicts(self, view, merge_map):
"""Report any files which prevent adding this package to the view. The
default implementation looks for any files which already exist.
Alternative implementations may allow some of the files to exist in
the view (in this case they would be omitted from the results).
"""
return set(dst for dst in merge_map.values() if os.path.exists(dst))
def add_files_to_view(self, view, merge_map):
"""Given a map of package files to destination paths in the view, add
the files to the view. By default this adds all files. Alternative
implementations may skip some files, for example if other packages
linked into the view already include the file.
"""
for src, dst in merge_map.items():
if not os.path.exists(dst):
view.link(src, dst)
def remove_files_from_view(self, view, merge_map):
"""Given a map of package files to files currently linked in the view,
remove the files from the view. The default implementation removes all
files. Alternative implementations may not remove all files. For
example if two packages include the same file, it should only be
removed when both packages are removed.
"""
for src, dst in merge_map.items():
view.remove_file(src, dst)
class PackageBase(with_metaclass(PackageMeta, PackageViewMixin, object)):
"""This is the superclass for all spack packages.
***The Package class***
A package defines how to fetch, verify (via, e.g., sha256), build,
and install a piece of software. A Package also defines what other
packages it depends on, so that dependencies can be installed along
with the package itself. Packages are written in pure python by
users of Spack.
There are two main parts of a Spack package:
1. **The package class**. Classes contain ``directives``, which are
special functions, that add metadata (versions, patches,
dependencies, and other information) to packages (see
``directives.py``). Directives provide the constraints that are
used as input to the concretizer.
2. **Package instances**. Once instantiated, a package is
essentially an installer for a particular piece of
software. Spack calls methods like ``do_install()`` on the
``Package`` object, and it uses those to drive user-implemented
methods like ``patch()``, ``install()``, and other build steps.
To install software, An instantiated package needs a *concrete*
spec, which guides the behavior of the various install methods.
Packages are imported from repos (see ``repo.py``).
**Package DSL**
Look in ``lib/spack/docs`` or check https://spack.readthedocs.io for
the full documentation of the package domain-specific language. That
used to be partially documented here, but as it grew, the docs here
became increasingly out of date.
**Package Lifecycle**
A package's lifecycle over a run of Spack looks something like this:
.. code-block:: python
p = Package() # Done for you by spack
p.do_fetch() # downloads tarball from a URL
p.do_stage() # expands tarball in a temp directory
p.do_patch() # applies patches to expanded source
p.do_install() # calls package's install() function
p.do_uninstall() # removes install directory
There are also some other commands that clean the build area:
.. code-block:: python
p.do_clean() # removes the stage directory entirely
p.do_restage() # removes the build directory and
# re-expands the archive.
The convention used here is that a ``do_*`` function is intended to be
called internally by Spack commands (in spack.cmd). These aren't for
package writers to override, and doing so may break the functionality
of the Package class.
Package creators have a lot of freedom, and they could technically
override anything in this class. That is not usually required.
For most use cases. Package creators typically just add attributes
like ``url`` and ``homepage``, or functions like ``install()``.
There are many custom ``Package`` subclasses in the
``spack.build_systems`` package that make things even easier for
specific build systems.
"""
#
# These are default values for instance variables.
#
#: By default we build in parallel. Subclasses can override this.
parallel = True
#: # jobs to use for parallel make. If set, overrides default of ncpus.
make_jobs = None
#: By default do not run tests within package's install()
run_tests = False
# FIXME: this is a bad object-oriented design, should be moved to Clang.
#: By default do not setup mockup XCode on macOS with Clang
use_xcode = False
#: Most packages are NOT extendable. Set to True if you want extensions.
extendable = False
#: When True, add RPATHs for the entire DAG. When False, add RPATHs only
#: for immediate dependencies.
transitive_rpaths = True
#: List of prefix-relative file paths (or a single path). If these do
#: not exist after install, or if they exist but are not files,
#: sanity checks fail.
sanity_check_is_file = []
#: List of prefix-relative directory paths (or a single path). If
#: these do not exist after install, or if they exist but are not
#: directories, sanity checks will fail.
sanity_check_is_dir = []
#: List of glob expressions. Each expression must either be
#: absolute or relative to the package source path.
#: Matching artifacts found at the end of the build process will
#: be copied in the same directory tree as build.env and build.out.
archive_files = []
#
# Set default licensing information
#
#: Boolean. If set to ``True``, this software requires a license.
#: If set to ``False``, all of the ``license_*`` attributes will
#: be ignored. Defaults to ``False``.
license_required = False
#: String. Contains the symbol used by the license manager to denote
#: a comment. Defaults to ``#``.
license_comment = '#'
#: List of strings. These are files that the software searches for when
#: looking for a license. All file paths must be relative to the
#: installation directory. More complex packages like Intel may require
#: multiple licenses for individual components. Defaults to the empty list.
license_files = []
#: List of strings. Environment variables that can be set to tell the
#: software where to look for a license if it is not in the usual location.
#: Defaults to the empty list.
license_vars = []
#: String. A URL pointing to license setup instructions for the software.
#: Defaults to the empty string.
license_url = ''
#: Verbosity level, preserved across installs.
_verbose = None
#: index of patches by sha256 sum, built lazily
_patches_by_hash = None
#: List of strings which contains GitHub usernames of package maintainers.
#: Do not include @ here in order not to unnecessarily ping the users.
maintainers = []
#: List of attributes which affect do not affect a package's content.
metadata_attrs = ['homepage', 'url', 'list_url', 'extendable', 'parallel',
'make_jobs']
def __init__(self, spec):
# this determines how the package should be built.
self.spec = spec
# Name of package is the name of its module, without the
# containing module names.
self.name = self.module.__name__
if '.' in self.name:
self.name = self.name[self.name.rindex('.') + 1:]
# Allow custom staging paths for packages
self.path = None
# Check versions in the versions dict.
for v in self.versions:
assert (isinstance(v, Version))
# Check version descriptors
for v in sorted(self.versions):
assert (isinstance(self.versions[v], dict))
# Version-ize the keys in versions dict
try:
self.versions = dict((Version(v), h)
for v, h in self.versions.items())
except ValueError as e:
raise ValueError("In package %s: %s" % (self.name, e.message))
# Set a default list URL (place to find available versions)
if not hasattr(self, 'list_url'):
self.list_url = None
if not hasattr(self, 'list_depth'):
self.list_depth = 0
# init internal variables
self._stage = None
self._fetcher = None
# Set up timing variables
self._fetch_time = 0.0
self._total_time = 0.0
if self.is_extension:
spack.repo.get(self.extendee_spec)._check_extendable()
super(PackageBase, self).__init__()
def possible_dependencies(
self, transitive=True, expand_virtuals=True, visited=None):
"""Return set of possible dependencies of this package.
Note: the set returned *includes* the package itself.
Args:
transitive (bool): return all transitive dependencies if True,
only direct dependencies if False.
expand_virtuals (bool): expand virtual dependencies into all
possible implementations.
visited (set): set of names of dependencies visited so far.
"""
if visited is None:
visited = set([self.name])
for i, name in enumerate(self.dependencies):
if spack.repo.path.is_virtual(name):
if expand_virtuals:
providers = spack.repo.path.providers_for(name)
dep_names = [spec.name for spec in providers]
else:
visited.add(name)
continue
else:
dep_names = [name]
for dep_name in dep_names:
if dep_name not in visited:
visited.add(dep_name)
if transitive:
pkg = spack.repo.get(dep_name)
pkg.possible_dependencies(
transitive, expand_virtuals, visited)
return visited
@property
def package_dir(self):
"""Return the directory where the package.py file lives."""
return os.path.abspath(os.path.dirname(self.module.__file__))
@property
def global_license_dir(self):
"""Returns the directory where global license files for all
packages are stored."""
return os.path.join(spack.paths.prefix, 'etc', 'spack', 'licenses')
@property
def global_license_file(self):
"""Returns the path where a global license file for this
particular package should be stored."""
if not self.license_files:
return
return os.path.join(self.global_license_dir, self.name,
os.path.basename(self.license_files[0]))
@property
def version(self):
if not self.spec.versions.concrete:
raise ValueError("Can only get of package with concrete version.")
return self.spec.versions[0]
@memoized
def version_urls(self):
"""OrderedDict of explicitly defined URLs for versions of this package.
Return:
An OrderedDict (version -> URL) different versions of this
package, sorted by version.
A version's URL only appears in the result if it has an an
explicitly defined ``url`` argument. So, this list may be empty
if a package only defines ``url`` at the top level.
"""
version_urls = OrderedDict()
for v, args in sorted(self.versions.items()):
if 'url' in args:
version_urls[v] = args['url']
return version_urls
def nearest_url(self, version):
"""Finds the URL with the "closest" version to ``version``.
This uses the following precedence order:
1. Find the next lowest or equal version with a URL.
2. If no lower URL, return the next *higher* URL.
3. If no higher URL, return None.
"""
version_urls = self.version_urls()
if version in version_urls:
return version_urls[version]
last_url = None
for v, u in self.version_urls().items():
if v > version:
if last_url:
return last_url
last_url = u
return last_url
def url_for_version(self, version):
"""Returns a URL from which the specified version of this package
may be downloaded.
version: class Version
The version for which a URL is sought.
See Class Version (version.py)
"""
if not isinstance(version, Version):
version = Version(version)
# If we have a specific URL for this version, don't extrapolate.
version_urls = self.version_urls()
if version in version_urls:
return version_urls[version]
# If no specific URL, use the default, class-level URL
default_url = getattr(self, 'url', None)
# if no exact match AND no class-level default, use the nearest URL
if not default_url:
default_url = self.nearest_url(version)
# if there are NO URLs to go by, then we can't do anything
if not default_url:
raise NoURLError(self.__class__)
return spack.url.substitute_version(
default_url, self.url_version(version))
def _make_resource_stage(self, root_stage, fetcher, resource):
resource_stage_folder = self._resource_stage(resource)
resource_mirror = spack.mirror.mirror_archive_path(
self.spec, fetcher, resource.name)
stage = ResourceStage(resource.fetcher,
root=root_stage,
resource=resource,
name=resource_stage_folder,
mirror_path=resource_mirror,
path=self.path)
return stage
def _make_root_stage(self, fetcher):
# Construct a mirror path (TODO: get this out of package.py)
mp = spack.mirror.mirror_archive_path(self.spec, fetcher)
# Construct a path where the stage should build..
s = self.spec
stage_name = "%s-%s-%s" % (s.name, s.version, s.dag_hash())
def download_search():
dynamic_fetcher = fs.from_list_url(self)
return [dynamic_fetcher] if dynamic_fetcher else []
stage = Stage(fetcher, mirror_path=mp, name=stage_name, path=self.path,
search_fn=download_search)
return stage
def _make_stage(self):
# Construct a composite stage on top of the composite FetchStrategy
composite_fetcher = self.fetcher
composite_stage = StageComposite()
resources = self._get_needed_resources()
for ii, fetcher in enumerate(composite_fetcher):
if ii == 0:
# Construct root stage first
stage = self._make_root_stage(fetcher)
else:
# Construct resource stage
resource = resources[ii - 1] # ii == 0 is root!
stage = self._make_resource_stage(composite_stage[0], fetcher,
resource)
# Append the item to the composite
composite_stage.append(stage)
return composite_stage
@property
def stage(self):
"""Get the build staging area for this package.
This automatically instantiates a ``Stage`` object if the package
doesn't have one yet, but it does not create the Stage directory
on the filesystem.
"""
if not self.spec.concrete:
raise ValueError("Can only get a stage for a concrete package.")
if self._stage is None:
self._stage = self._make_stage()
return self._stage
@stage.setter
def stage(self, stage):
"""Allow a stage object to be set to override the default."""
self._stage = stage
@property
def env_path(self):
if self.stage.source_path is None:
return None
else:
return os.path.join(self.stage.source_path, 'spack-build.env')
@property
def log_path(self):
if self.stage.source_path is None:
return None
else:
return os.path.join(self.stage.source_path, 'spack-build.out')
def _make_fetcher(self):
# Construct a composite fetcher that always contains at least
# one element (the root package). In case there are resources
# associated with the package, append their fetcher to the
# composite.
root_fetcher = fs.for_package_version(self, self.version)
fetcher = fs.FetchStrategyComposite() # Composite fetcher
fetcher.append(root_fetcher) # Root fetcher is always present
resources = self._get_needed_resources()
for resource in resources:
fetcher.append(resource.fetcher)
return fetcher
@property
def fetcher(self):
if not self.spec.versions.concrete:
raise ValueError(
"Can only get a fetcher for a package with concrete versions.")
if not self._fetcher:
self._fetcher = self._make_fetcher()
return self._fetcher
@fetcher.setter
def fetcher(self, f):
self._fetcher = f
def dependencies_of_type(self, *deptypes):
"""Get dependencies that can possibly have these deptypes.
This analyzes the package and determines which dependencies *can*
be a certain kind of dependency. Note that they may not *always*
be this kind of dependency, since dependencies can be optional,
so something may be a build dependency in one configuration and a
run dependency in another.
"""
return dict(
(name, conds) for name, conds in self.dependencies.items()
if any(dt in self.dependencies[name][cond].type
for cond in conds for dt in deptypes))
@property
def extendee_spec(self):
"""
Spec of the extendee of this package, or None if it is not an extension
"""
if not self.extendees:
return None
# TODO: allow more than one extendee.
name = next(iter(self.extendees))
# If the extendee is in the spec's deps already, return that.
for dep in self.spec.traverse(deptypes=('link', 'run')):
if name == dep.name:
return dep
# if the spec is concrete already, then it extends something
# that is an *optional* dependency, and the dep isn't there.
if self.spec._concrete:
return None
else:
# If it's not concrete, then return the spec from the
# extends() directive since that is all we know so far.
spec, kwargs = self.extendees[name]
return spec
@property
def extendee_args(self):
"""
Spec of the extendee of this package, or None if it is not an extension
"""
if not self.extendees:
return None
# TODO: allow multiple extendees.
name = next(iter(self.extendees))
return self.extendees[name][1]
@property
def is_extension(self):
# if it is concrete, it's only an extension if it actually
# dependes on the extendee.
if self.spec._concrete:
return self.extendee_spec is not None
else:
# If not, then it's an extension if it *could* be an extension
return bool(self.extendees)
def extends(self, spec):
'''
Returns True if this package extends the given spec.
If ``self.spec`` is concrete, this returns whether this package extends
the given spec.
If ``self.spec`` is not concrete, this returns whether this package may
extend the given spec.
'''
if spec.name not in self.extendees:
return False
s = self.extendee_spec
return s and spec.satisfies(s)
def is_activated(self, view):
"""Return True if package is activated."""
if not self.is_extension:
raise ValueError(
"is_activated called on package that is not an extension.")
extensions_layout = view.extensions_layout
exts = extensions_layout.extension_map(self.extendee_spec)
return (self.name in exts) and (exts[self.name] == self.spec)
def provides(self, vpkg_name):
"""
True if this package provides a virtual package with the specified name
"""
return any(
any(self.spec.satisfies(c) for c in constraints)
for s, constraints in self.provided.items() if s.name == vpkg_name
)
@property
def installed(self):
"""Installation status of a package.
Returns:
True if the package has been installed, False otherwise.
"""
has_prefix = os.path.isdir(self.prefix)
try:
# If the spec is in the DB, check the installed
# attribute of the record
rec = spack.store.db.get_record(self.spec)
db_says_installed = rec.installed
except KeyError:
# If the spec is not in the DB, the method
# above raises a Key error
db_says_installed = False
return has_prefix and db_says_installed
@property
def prefix(self):
"""Get the prefix into which this package should be installed."""
return self.spec.prefix
@property
def architecture(self):
"""Get the spack.architecture.Arch object that represents the
environment in which this package will be built."""
if not self.spec.concrete:
raise ValueError("Can only get the arch for concrete package.")
return spack.architecture.arch_for_spec(self.spec.architecture)
@property
def compiler(self):
"""Get the spack.compiler.Compiler object used to build this package"""
if not self.spec.concrete:
raise ValueError("Can only get a compiler for a concrete package.")
return spack.compilers.compiler_for_spec(self.spec.compiler,
self.spec.architecture)
def url_version(self, version):
"""
Given a version, this returns a string that should be substituted
into the package's URL to download that version.
By default, this just returns the version string. Subclasses may need
to override this, e.g. for boost versions where you need to ensure that
there are _'s in the download URL.
"""
return str(version)
def remove_prefix(self):
"""
Removes the prefix for a package along with any empty parent
directories
"""
spack.store.layout.remove_install_directory(self.spec)
def do_fetch(self, mirror_only=False):
"""
Creates a stage directory and downloads the tarball for this package.
Working directory will be set to the stage directory.
"""
if not self.spec.concrete:
raise ValueError("Can only fetch concrete packages.")
start_time = time.time()
checksum = spack.config.get('config:checksum')
if checksum and self.version not in self.versions:
tty.warn("There is no checksum on file to fetch %s safely." %
self.spec.cformat('$_$@'))
# Ask the user whether to skip the checksum if we're
# interactive, but just fail if non-interactive.
ck_msg = "Add a checksum or use --no-checksum to skip this check."
ignore_checksum = False
if sys.stdout.isatty():
ignore_checksum = tty.get_yes_or_no(" Fetch anyway?",
default=False)
if ignore_checksum:
tty.msg("Fetching with no checksum.", ck_msg)
if not ignore_checksum:
raise FetchError("Will not fetch %s" %
self.spec.format('$_$@'), ck_msg)
self.stage.create()
self.stage.fetch(mirror_only)
self._fetch_time = time.time() - start_time
if checksum and self.version in self.versions:
self.stage.check()
self.stage.cache_local()
def do_stage(self, mirror_only=False):
"""Unpacks and expands the fetched tarball."""
if not self.spec.concrete:
raise ValueError("Can only stage concrete packages.")
self.do_fetch(mirror_only) # this will create the stage
self.stage.expand_archive()
if not os.listdir(self.stage.path):
raise FetchError("Archive was empty for %s" % self.name)
@classmethod
def lookup_patch(cls, sha256):
"""Look up a patch associated with this package by its sha256 sum.
Args:
sha256 (str): sha256 sum of the patch to look up
Returns:
(Patch): ``Patch`` object with the given hash, or ``None`` if
not found.
To do the lookup, we build an index lazily. This allows us to
avoid computing a sha256 for *every* patch and on every package
load. With lazy hashing, we only compute hashes on lookup, which
usually happens at build time.
"""
if cls._patches_by_hash is None:
cls._patches_by_hash = {}
# Add patches from the class
for cond, patch_list in cls.patches.items():
for patch in patch_list:
cls._patches_by_hash[patch.sha256] = patch
# and patches on dependencies
for name, conditions in cls.dependencies.items():
for cond, dependency in conditions.items():
for pcond, patch_list in dependency.patches.items():
for patch in patch_list:
cls._patches_by_hash[patch.sha256] = patch
return cls._patches_by_hash.get(sha256, None)
def do_patch(self):
"""Applies patches if they haven't been applied already."""
if not self.spec.concrete:
raise ValueError("Can only patch concrete packages.")
# Kick off the stage first. This creates the stage.
self.do_stage()
# Package can add its own patch function.
has_patch_fun = hasattr(self, 'patch') and callable(self.patch)
# Get the patches from the spec (this is a shortcut for the MV-variant)
patches = self.spec.patches
# If there are no patches, note it.
if not patches and not has_patch_fun:
tty.msg("No patches needed for %s" % self.name)
return
# Construct paths to special files in the archive dir used to
# keep track of whether patches were successfully applied.
archive_dir = self.stage.source_path
good_file = os.path.join(archive_dir, '.spack_patched')
no_patches_file = os.path.join(archive_dir, '.spack_no_patches')
bad_file = os.path.join(archive_dir, '.spack_patch_failed')
# If we encounter an archive that failed to patch, restage it
# so that we can apply all the patches again.
if os.path.isfile(bad_file):
tty.msg("Patching failed last time. Restaging.")
self.stage.restage()
# If this file exists, then we already applied all the patches.
if os.path.isfile(good_file):
tty.msg("Already patched %s" % self.name)
return
elif os.path.isfile(no_patches_file):
tty.msg("No patches needed for %s" % self.name)
return
# Apply all the patches for specs that match this one
patched = False
for patch in patches:
try:
with working_dir(self.stage.source_path):
patch.apply(self.stage)
tty.msg('Applied patch %s' % patch.path_or_url)
patched = True
except spack.error.SpackError:
# Touch bad file if anything goes wrong.
tty.msg('Patch %s failed.' % patch.path_or_url)
touch(bad_file)
raise
if has_patch_fun:
try:
with working_dir(self.stage.source_path):
self.patch()
tty.msg("Ran patch() for %s" % self.name)
patched = True
except spack.multimethod.NoSuchMethodError:
# We are running a multimethod without a default case.
# If there's no default it means we don't need to patch.
if not patched:
# if we didn't apply a patch from a patch()
# directive, AND the patch function didn't apply, say
# no patches are needed. Otherwise, we already
# printed a message for each patch.
tty.msg("No patches needed for %s" % self.name)
except spack.error.SpackError:
tty.msg("patch() function failed for %s" % self.name)
touch(bad_file)
raise
# Get rid of any old failed file -- patches have either succeeded
# or are not needed. This is mostly defensive -- it's needed
# if the restage() method doesn't clean *everything* (e.g., for a repo)
if os.path.isfile(bad_file):
os.remove(bad_file)
# touch good or no patches file so that we skip next time.
if patched:
touch(good_file)
else:
touch(no_patches_file)
def content_hash(self, content=None):
"""Create a hash based on the sources and logic used to build the
package. This includes the contents of all applied patches and the
contents of applicable functions in the package subclass."""
if not self.spec.concrete:
err_msg = ("Cannot invoke content_hash on a package"
" if the associated spec is not concrete")
raise spack.error.SpackError(err_msg)
hash_content = list()
source_id = fs.for_package_version(self, self.version).source_id()
if not source_id:
# TODO? in cases where a digest or source_id isn't available,
# should this attempt to download the source and set one? This
# probably only happens for source repositories which are
# referenced by branch name rather than tag or commit ID.
message = 'Missing a source id for {s.name}@{s.version}'
tty.warn(message.format(s=self))
hash_content.append(''.encode('utf-8'))
else:
hash_content.append(source_id.encode('utf-8'))
hash_content.extend(':'.join((p.sha256, str(p.level))).encode('utf-8')
for p in self.spec.patches)
hash_content.append(package_hash(self.spec, content))
return base64.b32encode(
hashlib.sha256(bytes().join(
sorted(hash_content))).digest()).lower()
@property
def namespace(self):
namespace, dot, module = self.__module__.rpartition('.')
return namespace
def do_fake_install(self):
"""Make a fake install directory containing fake executables,
headers, and libraries."""
command = self.name
header = self.name
library = self.name
# Avoid double 'lib' for packages whose names already start with lib
if not self.name.startswith('lib'):
library = 'lib' + library
dso_suffix = '.dylib' if sys.platform == 'darwin' else '.so'
chmod = which('chmod')
# Install fake command
mkdirp(self.prefix.bin)
touch(os.path.join(self.prefix.bin, command))
chmod('+x', os.path.join(self.prefix.bin, command))
# Install fake header file
mkdirp(self.prefix.include)
touch(os.path.join(self.prefix.include, header + '.h'))
# Install fake shared and static libraries
mkdirp(self.prefix.lib)
for suffix in [dso_suffix, '.a']:
touch(os.path.join(self.prefix.lib, library + suffix))
# Install fake man page
mkdirp(self.prefix.man.man1)
packages_dir = spack.store.layout.build_packages_path(self.spec)
dump_packages(self.spec, packages_dir)
def _has_make_target(self, target):
"""Checks to see if 'target' is a valid target in a Makefile.
Parameters:
target (str): the target to check for
Returns:
bool: True if 'target' is found, else False
"""
make = inspect.getmodule(self).make
# Check if we have a Makefile
for makefile in ['GNUmakefile', 'Makefile', 'makefile']:
if os.path.exists(makefile):
break
else:
tty.msg('No Makefile found in the build directory')
return False
# Check if 'target' is a valid target.
#
# `make -n target` performs a "dry run". It prints the commands that
# would be run but doesn't actually run them. If the target does not
# exist, you will see one of the following error messages:
#
# GNU Make:
# make: *** No rule to make target `test'. Stop.
# *** No rule to make target 'test'. Stop.
#
# BSD Make:
# make: don't know how to make test. Stop
missing_target_msgs = [
"No rule to make target `{0}'. Stop.",
"No rule to make target '{0}'. Stop.",
"don't know how to make {0}. Stop",
]
kwargs = {
'fail_on_error': False,
'output': os.devnull,
'error': str,
}
stderr = make('-n', target, **kwargs)
for missing_target_msg in missing_target_msgs:
if missing_target_msg.format(target) in stderr:
tty.msg("Target '" + target + "' not found in " + makefile)
return False
return True
def _if_make_target_execute(self, target, *args, **kwargs):
"""Runs ``make target`` if 'target' is a valid target in the Makefile.
Parameters:
target (str): the target to potentially execute
"""
if self._has_make_target(target):
# Execute target
inspect.getmodule(self).make(target, *args, **kwargs)
def _has_ninja_target(self, target):
"""Checks to see if 'target' is a valid target in a Ninja build script.
Parameters:
target (str): the target to check for
Returns:
bool: True if 'target' is found, else False
"""
ninja = inspect.getmodule(self).ninja
# Check if we have a Ninja build script
if not os.path.exists('build.ninja'):
tty.msg('No Ninja build script found in the build directory')
return False
# Get a list of all targets in the Ninja build script
# https://ninja-build.org/manual.html#_extra_tools
all_targets = ninja('-t', 'targets', 'all', output=str).split('\n')
# Check if 'target' is a valid target
matches = [line for line in all_targets
if line.startswith(target + ':')]
if not matches:
tty.msg("Target '" + target + "' not found in build.ninja")
return False
return True
def _if_ninja_target_execute(self, target, *args, **kwargs):
"""Runs ``ninja target`` if 'target' is a valid target in the Ninja
build script.
Parameters:
target (str): the target to potentially execute
"""
if self._has_ninja_target(target):
# Execute target
inspect.getmodule(self).ninja(target, *args, **kwargs)
def _get_needed_resources(self):
resources = []
# Select the resources that are needed for this build
for when_spec, resource_list in self.resources.items():
if when_spec in self.spec:
resources.extend(resource_list)
# Sorts the resources by the length of the string representing their
# destination. Since any nested resource must contain another
# resource's name in its path, it seems that should work
resources = sorted(resources, key=lambda res: len(res.destination))
return resources
def _resource_stage(self, resource):
pieces = ['resource', resource.name, self.spec.dag_hash()]
resource_stage_folder = '-'.join(pieces)
return resource_stage_folder
@contextlib.contextmanager
def _stage_and_write_lock(self):
"""Prefix lock nested in a stage."""
with self.stage:
with spack.store.db.prefix_write_lock(self.spec):
yield
def _process_external_package(self, explicit):
"""Helper function to process external packages.
Runs post install hooks and registers the package in the DB.
Args:
explicit (bool): if the package was requested explicitly by
the user, False if it was pulled in as a dependency of an
explicit package.
"""
if self.spec.external_module:
message = '{s.name}@{s.version} : has external module in {module}'
tty.msg(message.format(s=self, module=self.spec.external_module))
message = '{s.name}@{s.version} : is actually installed in {path}'
tty.msg(message.format(s=self, path=self.spec.external_path))
else:
message = '{s.name}@{s.version} : externally installed in {path}'
tty.msg(message.format(s=self, path=self.spec.external_path))
try:
# Check if the package was already registered in the DB
# If this is the case, then just exit
rec = spack.store.db.get_record(self.spec)
message = '{s.name}@{s.version} : already registered in DB'
tty.msg(message.format(s=self))
# Update the value of rec.explicit if it is necessary
self._update_explicit_entry_in_db(rec, explicit)
except KeyError:
# If not register it and generate the module file
# For external packages we just need to run
# post-install hooks to generate module files
message = '{s.name}@{s.version} : generating module file'
tty.msg(message.format(s=self))
spack.hooks.post_install(self.spec)
# Add to the DB
message = '{s.name}@{s.version} : registering into DB'
tty.msg(message.format(s=self))
spack.store.db.add(self.spec, None, explicit=explicit)
def _update_explicit_entry_in_db(self, rec, explicit):
if explicit and not rec.explicit:
with spack.store.db.write_transaction():
rec = spack.store.db.get_record(self.spec)
rec.explicit = True
message = '{s.name}@{s.version} : marking the package explicit'
tty.msg(message.format(s=self))
def try_install_from_binary_cache(self, explicit):
tty.msg('Searching for binary cache of %s' % self.name)
specs = binary_distribution.get_specs()
binary_spec = spack.spec.Spec.from_dict(self.spec.to_dict())
binary_spec._mark_concrete()
if binary_spec not in specs:
return False
tty.msg('Installing %s from binary cache' % self.name)
tarball = binary_distribution.download_tarball(binary_spec)
binary_distribution.extract_tarball(
binary_spec, tarball, allow_root=False,
unsigned=False, force=False)
spack.store.db.add(
self.spec, spack.store.layout, explicit=explicit)
return True
def do_install(self,
keep_prefix=False,
keep_stage=False,
install_source=False,
install_deps=True,
skip_patch=False,
verbose=False,
make_jobs=None,
fake=False,
explicit=False,
tests=False,
dirty=None,
**kwargs):
"""Called by commands to install a package and its dependencies.
Package implementations should override install() to describe
their build process.
Args:
keep_prefix (bool): Keep install prefix on failure. By default,
destroys it.
keep_stage (bool): By default, stage is destroyed only if there
are no exceptions during build. Set to True to keep the stage
even with exceptions.
install_source (bool): By default, source is not installed, but
for debugging it might be useful to keep it around.
install_deps (bool): Install dependencies before installing this
package
skip_patch (bool): Skip patch stage of build if True.
verbose (bool): Display verbose build output (by default,
suppresses it)
make_jobs (int): Number of make jobs to use for install. Default
is ncpus
fake (bool): Don't really build; install fake stub files instead.
explicit (bool): True if package was explicitly installed, False
if package was implicitly installed (as a dependency).
tests (bool or list or set): False to run no tests, True to test
all packages, or a list of package names to run tests for some
dirty (bool): Don't clean the build environment before installing.
force (bool): Install again, even if already installed.
"""
if not self.spec.concrete:
raise ValueError("Can only install concrete packages: %s."
% self.spec.name)
# For external packages the workflow is simplified, and basically
# consists in module file generation and registration in the DB
if self.spec.external:
return self._process_external_package(explicit)
restage = kwargs.get('restage', False)
partial = self.check_for_unfinished_installation(keep_prefix, restage)
# Ensure package is not already installed
layout = spack.store.layout
with spack.store.db.prefix_read_lock(self.spec):
if partial:
tty.msg(
"Continuing from partial install of %s" % self.name)
elif layout.check_installed(self.spec):
msg = '{0.name} is already installed in {0.prefix}'
tty.msg(msg.format(self))
rec = spack.store.db.get_record(self.spec)
# In case the stage directory has already been created,
# this ensures it's removed after we checked that the spec
# is installed
if keep_stage is False:
self.stage.destroy()
return self._update_explicit_entry_in_db(rec, explicit)
self._do_install_pop_kwargs(kwargs)
# First, install dependencies recursively.
if install_deps:
tty.debug('Installing {0} dependencies'.format(self.name))
for dep in self.spec.traverse(order='post', root=False):
dep.package.do_install(
install_deps=False,
explicit=False,
keep_prefix=keep_prefix,
keep_stage=keep_stage,
install_source=install_source,
fake=fake,
skip_patch=skip_patch,
verbose=verbose,
make_jobs=make_jobs,
tests=tests,
dirty=dirty,
**kwargs)
tty.msg(colorize('@*{Installing} @*g{%s}' % self.name))
if kwargs.get('use_cache', False):
if self.try_install_from_binary_cache(explicit):
tty.msg('Successfully installed %s from binary cache'
% self.name)
print_pkg(self.prefix)
spack.hooks.post_install(self.spec)
return
tty.msg('No binary for %s found: installing from source'
% self.name)
# Set run_tests flag before starting build
self.run_tests = (tests is True or
tests and self.name in tests)
# Set parallelism before starting build.
self.make_jobs = make_jobs
# Then install the package itself.
def build_process():
"""This implements the process forked for each build.
Has its own process and python module space set up by
build_environment.fork().
This function's return value is returned to the parent process.
"""
start_time = time.time()
if not fake:
if not skip_patch:
self.do_patch()
else:
self.do_stage()
tty.msg(
'Building {0} [{1}]'.format(self.name, self.build_system_class)
)
# get verbosity from do_install() parameter or saved value
echo = verbose
if PackageBase._verbose is not None:
echo = PackageBase._verbose
self.stage.keep = keep_stage
with self._stage_and_write_lock():
# Run the pre-install hook in the child process after
# the directory is created.
spack.hooks.pre_install(self.spec)
if fake:
self.do_fake_install()
else:
source_path = self.stage.source_path
if install_source and os.path.isdir(source_path):
src_target = os.path.join(
self.spec.prefix, 'share', self.name, 'src')
tty.msg('Copying source to {0}'.format(src_target))
install_tree(self.stage.source_path, src_target)
# Do the real install in the source directory.
with working_dir(self.stage.source_path):
# Save the build environment in a file before building.
dump_environment(self.env_path)
# Spawn a daemon that reads from a pipe and redirects
# everything to log_path
with log_output(self.log_path, echo, True) as logger:
for phase_name, phase_attr in zip(
self.phases, self._InstallPhase_phases):
with logger.force_echo():
tty.msg(
"Executing phase: '%s'" % phase_name)
# Redirect stdout and stderr to daemon pipe
phase = getattr(self, phase_attr)
phase(self.spec, self.prefix)
echo = logger.echo
self.log()
# Run post install hooks before build stage is removed.
spack.hooks.post_install(self.spec)
# Stop timer.
self._total_time = time.time() - start_time
build_time = self._total_time - self._fetch_time
tty.msg("Successfully installed %s" % self.name,
"Fetch: %s. Build: %s. Total: %s." %
(_hms(self._fetch_time), _hms(build_time),
_hms(self._total_time)))
print_pkg(self.prefix)
# preserve verbosity across runs
return echo
# hook that allow tests to inspect this Package before installation
# see unit_test_check() docs.
if not self.unit_test_check():
return
try:
# Create the install prefix and fork the build process.
if not os.path.exists(self.prefix):
spack.store.layout.create_install_directory(self.spec)
else:
# Set the proper group for the prefix
group = get_package_group(self.spec)
if group:
chgrp(self.prefix, group)
# Set the proper permissions.
# This has to be done after group because changing groups blows
# away the sticky group bit on the directory
mode = os.stat(self.prefix).st_mode
perms = get_package_dir_permissions(self.spec)
if mode != perms:
os.chmod(self.prefix, perms)
# Fork a child to do the actual installation
# we preserve verbosity settings across installs.
PackageBase._verbose = spack.build_environment.fork(
self, build_process, dirty=dirty, fake=fake)
# If we installed then we should keep the prefix
keep_prefix = self.last_phase is None or keep_prefix
# note: PARENT of the build process adds the new package to
# the database, so that we don't need to re-read from file.
spack.store.db.add(
self.spec, spack.store.layout, explicit=explicit
)
except spack.directory_layout.InstallDirectoryAlreadyExistsError:
# Abort install if install directory exists.
# But do NOT remove it (you'd be overwriting someone else's stuff)
tty.warn("Keeping existing install prefix in place.")
raise
except StopIteration as e:
# A StopIteration exception means that do_install
# was asked to stop early from clients
tty.msg(e.message)
tty.msg(
'Package stage directory : {0}'.format(self.stage.source_path)
)
finally:
# Remove the install prefix if anything went wrong during install.
if not keep_prefix:
self.remove_prefix()
# The subprocess *may* have removed the build stage. Mark it
# not created so that the next time self.stage is invoked, we
# check the filesystem for it.
self.stage.created = False
def unit_test_check(self):
"""Hook for unit tests to assert things about package internals.
Unit tests can override this function to perform checks after
``Package.install`` and all post-install hooks run, but before
the database is updated.
The overridden function may indicate that the install procedure
should terminate early (before updating the database) by
returning ``False`` (or any value such that ``bool(result)`` is
``False``).
Return:
(bool): ``True`` to continue, ``False`` to skip ``install()``
"""
return True
def check_for_unfinished_installation(
self, keep_prefix=False, restage=False):
"""Check for leftover files from partially-completed prior install to
prepare for a new install attempt.
Options control whether these files are reused (vs. destroyed).
Args:
keep_prefix (bool): True if the installation prefix needs to be
kept, False otherwise
restage (bool): False if the stage has to be kept, True otherwise
Returns:
True if the prefix exists but the install is not complete, False
otherwise.
"""
if self.spec.external:
raise ExternalPackageError("Attempted to repair external spec %s" %
self.spec.name)
with spack.store.db.prefix_write_lock(self.spec):
try:
record = spack.store.db.get_record(self.spec)
installed_in_db = record.installed if record else False
except KeyError:
installed_in_db = False
partial = False
if not installed_in_db and os.path.isdir(self.prefix):
if not keep_prefix:
self.remove_prefix()
else:
partial = True
stage_is_managed_in_spack = self.stage.path.startswith(
spack.paths.stage_path)
if restage and stage_is_managed_in_spack:
self.stage.destroy()
self.stage.create()
return partial
def _do_install_pop_kwargs(self, kwargs):
"""Pops kwargs from do_install before starting the installation
Args:
kwargs:
'stop_at': last installation phase to be executed (or None)
"""
self.last_phase = kwargs.pop('stop_at', None)
if self.last_phase is not None and self.last_phase not in self.phases:
tty.die('\'{0}\' is not an allowed phase for package {1}'
.format(self.last_phase, self.name))
def log(self):
# Copy provenance into the install directory on success
log_install_path = spack.store.layout.build_log_path(self.spec)
env_install_path = spack.store.layout.build_env_path(self.spec)
packages_dir = spack.store.layout.build_packages_path(self.spec)
# Remove first if we're overwriting another build
# (can happen with spack setup)
try:
# log_install_path and env_install_path are inside this
shutil.rmtree(packages_dir)
except Exception:
# FIXME : this potentially catches too many things...
pass
# Archive the whole stdout + stderr for the package
install(self.log_path, log_install_path)
# Archive the environment used for the build
install(self.env_path, env_install_path)
# Finally, archive files that are specific to each package
with working_dir(self.stage.source_path):
errors = StringIO()
target_dir = os.path.join(
spack.store.layout.metadata_path(self.spec),
'archived-files')
for glob_expr in self.archive_files:
# Check that we are trying to copy things that are
# in the source_path tree (not arbitrary files)
abs_expr = os.path.realpath(glob_expr)
if os.path.realpath(self.stage.source_path) not in abs_expr:
errors.write(
'[OUTSIDE SOURCE PATH]: {0}\n'.format(glob_expr)
)
continue
# Now that we are sure that the path is within the correct
# folder, make it relative and check for matches
if os.path.isabs(glob_expr):
glob_expr = os.path.relpath(
glob_expr, self.stage.source_path
)
files = glob.glob(glob_expr)
for f in files:
try:
target = os.path.join(target_dir, f)
# We must ensure that the directory exists before
# copying a file in
mkdirp(os.path.dirname(target))
install(f, target)
except Exception:
# Here try to be conservative, and avoid discarding
# the whole install procedure because of copying a
# single file failed
errors.write('[FAILED TO ARCHIVE]: {0}'.format(f))
if errors.getvalue():
error_file = os.path.join(target_dir, 'errors.txt')
mkdirp(target_dir)
with open(error_file, 'w') as err:
err.write(errors.getvalue())
tty.warn('Errors occurred when archiving files.\n\t'
'See: {0}'.format(error_file))
dump_packages(self.spec, packages_dir)
def sanity_check_prefix(self):
"""This function checks whether install succeeded."""
def check_paths(path_list, filetype, predicate):
if isinstance(path_list, string_types):
path_list = [path_list]
for path in path_list:
abs_path = os.path.join(self.prefix, path)
if not predicate(abs_path):
raise InstallError(
"Install failed for %s. No such %s in prefix: %s" %
(self.name, filetype, path))
check_paths(self.sanity_check_is_file, 'file', os.path.isfile)
check_paths(self.sanity_check_is_dir, 'directory', os.path.isdir)
installed = set(os.listdir(self.prefix))
installed.difference_update(
spack.store.layout.hidden_file_paths)
if not installed:
raise InstallError(
"Install failed for %s. Nothing was installed!" % self.name)
@property
def build_log_path(self):
if self.installed:
return spack.store.layout.build_log_path(self.spec)
else:
return os.path.join(self.stage.source_path, 'spack-build.out')
@property
def module(self):
"""Use this to add variables to the class's module's scope.
This lets us use custom syntax in the install method.
"""
return __import__(self.__class__.__module__,
fromlist=[self.__class__.__name__])
@classmethod
def inject_flags(cls, name, flags):
"""
flag_handler that injects all flags through the compiler wrapper.
"""
return (flags, None, None)
@classmethod
def env_flags(cls, name, flags):
"""
flag_handler that adds all flags to canonical environment variables.
"""
return (None, flags, None)
@classmethod
def build_system_flags(cls, name, flags):
"""
flag_handler that passes flags to the build system arguments. Any
package using `build_system_flags` must also implement
`flags_to_build_system_args`, or derive from a class that
implements it. Currently, AutotoolsPackage and CMakePackage
implement it.
"""
return (None, None, flags)
def setup_environment(self, spack_env, run_env):
"""Set up the compile and runtime environments for a package.
``spack_env`` and ``run_env`` are ``EnvironmentModifications``
objects. Package authors can call methods on them to alter
the environment within Spack and at runtime.
Both ``spack_env`` and ``run_env`` are applied within the build
process, before this package's ``install()`` method is called.
Modifications in ``run_env`` will *also* be added to the
generated environment modules for this package.
Default implementation does nothing, but this can be
overridden if the package needs a particular environment.
Example:
1. Qt extensions need ``QTDIR`` set.
Args:
spack_env (EnvironmentModifications): List of environment
modifications to be applied when this package is built
within Spack.
run_env (EnvironmentModifications): List of environment
modifications to be applied when this package is run outside
of Spack. These are added to the resulting module file.
"""
pass
def setup_dependent_environment(self, spack_env, run_env, dependent_spec):
"""Set up the environment of packages that depend on this one.
This is similar to ``setup_environment``, but it is used to
modify the compile and runtime environments of packages that
*depend* on this one. This gives packages like Python and
others that follow the extension model a way to implement
common environment or compile-time settings for dependencies.
This is useful if there are some common steps to installing
all extensions for a certain package.
Example:
1. Installing python modules generally requires ``PYTHONPATH`` to point
to the ``lib/pythonX.Y/site-packages`` directory in the module's
install prefix. This method could be used to set that variable.
Args:
spack_env (EnvironmentModifications): List of environment
modifications to be applied when the dependent package is
built within Spack.
run_env (EnvironmentModifications): List of environment
modifications to be applied when the dependent package is
run outside of Spack. These are added to the resulting
module file.
dependent_spec (Spec): The spec of the dependent package
about to be built. This allows the extendee (self) to query
the dependent's state. Note that *this* package's spec is
available as ``self.spec``.
"""
pass
def setup_dependent_package(self, module, dependent_spec):
"""Set up Python module-scope variables for dependent packages.
Called before the install() method of dependents.
Default implementation does nothing, but this can be
overridden by an extendable package to set up the module of
its extensions. This is useful if there are some common steps
to installing all extensions for a certain package.
Examples:
1. Extensions often need to invoke the ``python`` interpreter
from the Python installation being extended. This routine
can put a ``python()`` Executable object in the module scope
for the extension package to simplify extension installs.
2. MPI compilers could set some variables in the dependent's
scope that point to ``mpicc``, ``mpicxx``, etc., allowing
them to be called by common name regardless of which MPI is used.
3. BLAS/LAPACK implementations can set some variables
indicating the path to their libraries, since these
paths differ by BLAS/LAPACK implementation.
Args:
module (spack.package.PackageBase.module): The Python ``module``
object of the dependent package. Packages can use this to set
module-scope variables for the dependent to use.
dependent_spec (Spec): The spec of the dependent package
about to be built. This allows the extendee (self) to
query the dependent's state. Note that *this*
package's spec is available as ``self.spec``.
"""
pass
flag_handler = inject_flags
# The flag handler method is called for each of the allowed compiler flags.
# It returns a triple of inject_flags, env_flags, build_system_flags.
# The flags returned as inject_flags are injected through the spack
# compiler wrappers.
# The flags returned as env_flags are passed to the build system through
# the environment variables of the same name.
# The flags returned as build_system_flags are passed to the build system
# package subclass to be turned into the appropriate part of the standard
# arguments. This is implemented for build system classes where
# appropriate and will otherwise raise a NotImplementedError.
def flags_to_build_system_args(self, flags):
# Takes flags as a dict name: list of values
if any(v for v in flags.values()):
msg = 'The {0} build system'.format(self.__class__.__name__)
msg += ' cannot take command line arguments for compiler flags'
raise NotImplementedError(msg)
@staticmethod
def uninstall_by_spec(spec, force=False):
if not os.path.isdir(spec.prefix):
# prefix may not exist, but DB may be inconsistent. Try to fix by
# removing, but omit hooks.
specs = spack.store.db.query(spec, installed=True)
if specs:
spack.store.db.remove(specs[0])
tty.msg("Removed stale DB entry for %s" % spec.short_spec)
return
else:
raise InstallError(str(spec) + " is not installed.")
if not force:
dependents = spack.store.db.installed_relatives(
spec, 'parents', True)
if dependents:
raise PackageStillNeededError(spec, dependents)
# Try to get the pcakage for the spec
try:
pkg = spec.package
except spack.repo.UnknownEntityError:
pkg = None
# Pre-uninstall hook runs first.
with spack.store.db.prefix_write_lock(spec):
if pkg is not None:
spack.hooks.pre_uninstall(spec)
# Uninstalling in Spack only requires removing the prefix.
if not spec.external:
msg = 'Deleting package prefix [{0}]'
tty.debug(msg.format(spec.short_spec))
spack.store.layout.remove_install_directory(spec)
# Delete DB entry
msg = 'Deleting DB entry [{0}]'
tty.debug(msg.format(spec.short_spec))
spack.store.db.remove(spec)
if pkg is not None:
spack.hooks.post_uninstall(spec)
tty.msg("Successfully uninstalled %s" % spec.short_spec)
def do_uninstall(self, force=False):
"""Uninstall this package by spec."""
# delegate to instance-less method.
Package.uninstall_by_spec(self.spec, force)
def _check_extendable(self):
if not self.extendable:
raise ValueError("Package %s is not extendable!" % self.name)
def _sanity_check_extension(self):
if not self.is_extension:
raise ActivationError("This package is not an extension.")
extendee_package = self.extendee_spec.package
extendee_package._check_extendable()
if not extendee_package.installed:
raise ActivationError(
"Can only (de)activate extensions for installed packages.")
if not self.installed:
raise ActivationError("Extensions must first be installed.")
if self.extendee_spec.name not in self.extendees:
raise ActivationError("%s does not extend %s!" %
(self.name, self.extendee.name))
def do_activate(self, view=None, with_dependencies=True, verbose=True):
"""Called on an extension to invoke the extendee's activate method.
Commands should call this routine, and should not call
activate() directly.
"""
if verbose:
tty.msg('Activating extension {0} for {1}'.format(
self.spec.cshort_spec, self.extendee_spec.cshort_spec))
self._sanity_check_extension()
if not view:
view = YamlFilesystemView(
self.extendee_spec.prefix, spack.store.layout)
extensions_layout = view.extensions_layout
extensions_layout.check_extension_conflict(
self.extendee_spec, self.spec)
# Activate any package dependencies that are also extensions.
if with_dependencies:
for spec in self.dependency_activations():
if not spec.package.is_activated(view):
spec.package.do_activate(
view, with_dependencies=with_dependencies,
verbose=verbose)
self.extendee_spec.package.activate(
self, view, **self.extendee_args)
extensions_layout.add_extension(self.extendee_spec, self.spec)
if verbose:
tty.debug('Activated extension {0} for {1}'.format(
self.spec.cshort_spec, self.extendee_spec.cshort_spec))
def dependency_activations(self):
return (spec for spec in self.spec.traverse(root=False, deptype='run')
if spec.package.extends(self.extendee_spec))
def activate(self, extension, view, **kwargs):
"""
Add the extension to the specified view.
Package authors can override this function to maintain some
centralized state related to the set of activated extensions
for a package.
Spack internals (commands, hooks, etc.) should call
do_activate() method so that proper checks are always executed.
"""
view.merge(extension.spec, ignore=kwargs.get('ignore', None))
def do_deactivate(self, view=None, **kwargs):
"""Remove this extension package from the specified view. Called
on the extension to invoke extendee's deactivate() method.
`remove_dependents=True` deactivates extensions depending on this
package instead of raising an error.
"""
self._sanity_check_extension()
force = kwargs.get('force', False)
verbose = kwargs.get('verbose', True)
remove_dependents = kwargs.get('remove_dependents', False)
if verbose:
tty.msg('Deactivating extension {0} for {1}'.format(
self.spec.cshort_spec, self.extendee_spec.cshort_spec))
if not view:
view = YamlFilesystemView(
self.extendee_spec.prefix, spack.store.layout)
extensions_layout = view.extensions_layout
# Allow a force deactivate to happen. This can unlink
# spurious files if something was corrupted.
if not force:
extensions_layout.check_activated(
self.extendee_spec, self.spec)
activated = extensions_layout.extension_map(
self.extendee_spec)
for name, aspec in activated.items():
if aspec == self.spec:
continue
for dep in aspec.traverse(deptype='run'):
if self.spec == dep:
if remove_dependents:
aspec.package.do_deactivate(**kwargs)
else:
msg = ('Cannot deactivate {0} because {1} is '
'activated and depends on it')
raise ActivationError(msg.format(
self.spec.cshort_spec, aspec.cshort_spec))
self.extendee_spec.package.deactivate(
self, view, **self.extendee_args)
# redundant activation check -- makes SURE the spec is not
# still activated even if something was wrong above.
if self.is_activated(view):
extensions_layout.remove_extension(
self.extendee_spec, self.spec)
if verbose:
tty.debug('Deactivated extension {0} for {1}'.format(
self.spec.cshort_spec, self.extendee_spec.cshort_spec))
def deactivate(self, extension, view, **kwargs):
"""
Remove all extension files from the specified view.
Package authors can override this method to support other
extension mechanisms. Spack internals (commands, hooks, etc.)
should call do_deactivate() method so that proper checks are
always executed.
"""
view.unmerge(extension.spec, ignore=kwargs.get('ignore', None))
def view(self):
"""Create a view with the prefix of this package as the root.
Extensions added to this view will modify the installation prefix of
this package.
"""
return YamlFilesystemView(self.prefix, spack.store.layout)
def do_restage(self):
"""Reverts expanded/checked out source to a pristine state."""
self.stage.restage()
def do_clean(self):
"""Removes the package's build stage and source tarball."""
self.stage.destroy()
def format_doc(self, **kwargs):
"""Wrap doc string at 72 characters and format nicely"""
indent = kwargs.get('indent', 0)
if not self.__doc__:
return ""
doc = re.sub(r'\s+', ' ', self.__doc__)
lines = textwrap.wrap(doc, 72)
results = StringIO()
for line in lines:
results.write((" " * indent) + line + "\n")
return results.getvalue()
@property
def all_urls(self):
"""A list of all URLs in a package.
Check both class-level and version-specific URLs.
Returns:
list: a list of URLs
"""
urls = []
if hasattr(self, 'url') and self.url:
urls.append(self.url)
for args in self.versions.values():
if 'url' in args:
urls.append(args['url'])
return urls
def fetch_remote_versions(self):
"""Find remote versions of this package.
Uses ``list_url`` and any other URLs listed in the package file.
Returns:
dict: a dictionary mapping versions to URLs
"""
if not self.all_urls:
return {}
try:
return spack.util.web.find_versions_of_archive(
self.all_urls, self.list_url, self.list_depth)
except spack.util.web.NoNetworkConnectionError as e:
tty.die("Package.fetch_versions couldn't connect to:", e.url,
e.message)
@property
def rpath(self):
"""Get the rpath this package links with, as a list of paths."""
rpaths = [self.prefix.lib, self.prefix.lib64]
deps = self.spec.dependencies(deptype='link')
rpaths.extend(d.prefix.lib for d in deps
if os.path.isdir(d.prefix.lib))
rpaths.extend(d.prefix.lib64 for d in deps
if os.path.isdir(d.prefix.lib64))
return rpaths
@property
def rpath_args(self):
"""
Get the rpath args as a string, with -Wl,-rpath, for each element
"""
return " ".join("-Wl,-rpath,%s" % p for p in self.rpath)
build_time_test_callbacks = None
@on_package_attributes(run_tests=True)
def _run_default_build_time_test_callbacks(self):
"""Tries to call all the methods that are listed in the attribute
``build_time_test_callbacks`` if ``self.run_tests is True``.
If ``build_time_test_callbacks is None`` returns immediately.
"""
if self.build_time_test_callbacks is None:
return
for name in self.build_time_test_callbacks:
try:
fn = getattr(self, name)
tty.msg('RUN-TESTS: build-time tests [{0}]'.format(name))
fn()
except AttributeError:
msg = 'RUN-TESTS: method not implemented [{0}]'
tty.warn(msg.format(name))
install_time_test_callbacks = None
@on_package_attributes(run_tests=True)
def _run_default_install_time_test_callbacks(self):
"""Tries to call all the methods that are listed in the attribute
``install_time_test_callbacks`` if ``self.run_tests is True``.
If ``install_time_test_callbacks is None`` returns immediately.
"""
if self.install_time_test_callbacks is None:
return
for name in self.install_time_test_callbacks:
try:
fn = getattr(self, name)
tty.msg('RUN-TESTS: install-time tests [{0}]'.format(name))
fn()
except AttributeError:
msg = 'RUN-TESTS: method not implemented [{0}]'
tty.warn(msg.format(name))
inject_flags = PackageBase.inject_flags
env_flags = PackageBase.env_flags
build_system_flags = PackageBase.build_system_flags
class Package(PackageBase):
"""General purpose class with a single ``install``
phase that needs to be coded by packagers.
"""
#: The one and only phase
phases = ['install']
#: This attribute is used in UI queries that require to know which
#: build-system class we are using
build_system_class = 'Package'
# This will be used as a registration decorator in user
# packages, if need be
run_after('install')(PackageBase.sanity_check_prefix)
def install_dependency_symlinks(pkg, spec, prefix):
"""Execute a dummy install and flatten dependencies"""
flatten_dependencies(spec, prefix)
def use_cray_compiler_names():
"""Compiler names for builds that rely on cray compiler names."""
os.environ['CC'] = 'cc'
os.environ['CXX'] = 'CC'
os.environ['FC'] = 'ftn'
os.environ['F77'] = 'ftn'
def flatten_dependencies(spec, flat_dir):
"""Make each dependency of spec present in dir via symlink."""
for dep in spec.traverse(root=False):
name = dep.name
dep_path = spack.store.layout.path_for_spec(dep)
dep_files = LinkTree(dep_path)
os.mkdir(flat_dir + '/' + name)
conflict = dep_files.find_conflict(flat_dir + '/' + name)
if conflict:
raise DependencyConflictError(conflict)
dep_files.merge(flat_dir + '/' + name)
def dump_packages(spec, path):
"""Dump all package information for a spec and its dependencies.
This creates a package repository within path for every
namespace in the spec DAG, and fills the repos wtih package
files and patch files for every node in the DAG.
"""
mkdirp(path)
# Copy in package.py files from any dependencies.
# Note that we copy them in as they are in the *install* directory
# NOT as they are in the repository, because we want a snapshot of
# how *this* particular build was done.
for node in spec.traverse(deptype=all):
if node is not spec:
# Locate the dependency package in the install tree and find
# its provenance information.
source = spack.store.layout.build_packages_path(node)
source_repo_root = os.path.join(source, node.namespace)
# There's no provenance installed for the source package. Skip it.
# User can always get something current from the builtin repo.
if not os.path.isdir(source_repo_root):
continue
# Create a source repo and get the pkg directory out of it.
try:
source_repo = spack.repo.Repo(source_repo_root)
source_pkg_dir = source_repo.dirname_for_package_name(
node.name)
except spack.repo.RepoError:
tty.warn("Warning: Couldn't copy in provenance for %s" %
node.name)
# Create a destination repository
dest_repo_root = os.path.join(path, node.namespace)
if not os.path.exists(dest_repo_root):
spack.repo.create_repo(dest_repo_root)
repo = spack.repo.Repo(dest_repo_root)
# Get the location of the package in the dest repo.
dest_pkg_dir = repo.dirname_for_package_name(node.name)
if node is not spec:
install_tree(source_pkg_dir, dest_pkg_dir)
else:
spack.repo.path.dump_provenance(node, dest_pkg_dir)
def print_pkg(message):
"""Outputs a message with a package icon."""
from llnl.util.tty.color import cwrite
cwrite('@*g{[+]} ')
print(message)
def _hms(seconds):
"""Convert time in seconds to hours, minutes, seconds."""
m, s = divmod(seconds, 60)
h, m = divmod(m, 60)
parts = []
if h:
parts.append("%dh" % h)
if m:
parts.append("%dm" % m)
if s:
parts.append("%.2fs" % s)
return ' '.join(parts)
class FetchError(spack.error.SpackError):
"""Raised when something goes wrong during fetch."""
def __init__(self, message, long_msg=None):
super(FetchError, self).__init__(message, long_msg)
class InstallError(spack.error.SpackError):
"""Raised when something goes wrong during install or uninstall."""
def __init__(self, message, long_msg=None):
super(InstallError, self).__init__(message, long_msg)
class ExternalPackageError(InstallError):
"""Raised by install() when a package is only for external use."""
class PackageStillNeededError(InstallError):
"""Raised when package is still needed by another on uninstall."""
def __init__(self, spec, dependents):
super(PackageStillNeededError, self).__init__("Cannot uninstall %s" %
spec)
self.spec = spec
self.dependents = dependents
class PackageError(spack.error.SpackError):
"""Raised when something is wrong with a package definition."""
def __init__(self, message, long_msg=None):
super(PackageError, self).__init__(message, long_msg)
class PackageVersionError(PackageError):
"""Raised when a version URL cannot automatically be determined."""
def __init__(self, version):
super(PackageVersionError, self).__init__(
"Cannot determine a URL automatically for version %s" % version,
"Please provide a url for this version in the package.py file.")
class NoURLError(PackageError):
"""Raised when someone tries to build a URL for a package with no URLs."""
def __init__(self, cls):
super(NoURLError, self).__init__(
"Package %s has no version with a URL." % cls.__name__)
class ExtensionError(PackageError):
"""Superclass for all errors having to do with extension packages."""
class ActivationError(ExtensionError):
"""Raised when there are problems activating an extension."""
def __init__(self, msg, long_msg=None):
super(ActivationError, self).__init__(msg, long_msg)
class DependencyConflictError(spack.error.SpackError):
"""Raised when the dependencies cannot be flattened as asked for."""
def __init__(self, conflict):
super(DependencyConflictError, self).__init__(
"%s conflicts with another file in the flattened directory." % (
conflict))
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