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"""numpy.distutils.fcompiler
Contains FCompiler, an abstract base class that defines the interface
for the numpy.distutils Fortran compiler abstraction model.
Terminology:
To be consistent, where the term 'executable' is used, it means the single
file, like 'gcc', that is executed, and should be a string. In contrast,
'command' means the entire command line, like ['gcc', '-c', 'file.c'], and
should be a list.
But note that FCompiler.executables is actually a dictionary of commands.
"""
__all__ = ['FCompiler', 'new_fcompiler', 'show_fcompilers',
'dummy_fortran_file']
import os
import sys
import re
from pathlib import Path
from distutils.sysconfig import get_python_lib
from distutils.fancy_getopt import FancyGetopt
from distutils.errors import DistutilsModuleError, \
DistutilsExecError, CompileError, LinkError, DistutilsPlatformError
from distutils.util import split_quoted, strtobool
from numpy.distutils.ccompiler import CCompiler, gen_lib_options
from numpy.distutils import log
from numpy.distutils.misc_util import is_string, all_strings, is_sequence, \
make_temp_file, get_shared_lib_extension
from numpy.distutils.exec_command import find_executable
from numpy.distutils import _shell_utils
from .environment import EnvironmentConfig
__metaclass__ = type
FORTRAN_COMMON_FIXED_EXTENSIONS = ['.for', '.ftn', '.f77', '.f']
class CompilerNotFound(Exception):
pass
def flaglist(s):
if is_string(s):
return split_quoted(s)
else:
return s
def str2bool(s):
if is_string(s):
return strtobool(s)
return bool(s)
def is_sequence_of_strings(seq):
return is_sequence(seq) and all_strings(seq)
class FCompiler(CCompiler):
"""Abstract base class to define the interface that must be implemented
by real Fortran compiler classes.
Methods that subclasses may redefine:
update_executables(), find_executables(), get_version()
get_flags(), get_flags_opt(), get_flags_arch(), get_flags_debug()
get_flags_f77(), get_flags_opt_f77(), get_flags_arch_f77(),
get_flags_debug_f77(), get_flags_f90(), get_flags_opt_f90(),
get_flags_arch_f90(), get_flags_debug_f90(),
get_flags_fix(), get_flags_linker_so()
DON'T call these methods (except get_version) after
constructing a compiler instance or inside any other method.
All methods, except update_executables() and find_executables(),
may call the get_version() method.
After constructing a compiler instance, always call customize(dist=None)
method that finalizes compiler construction and makes the following
attributes available:
compiler_f77
compiler_f90
compiler_fix
linker_so
archiver
ranlib
libraries
library_dirs
"""
# These are the environment variables and distutils keys used.
# Each configuration description is
# (<hook name>, <environment variable>, <key in distutils.cfg>, <convert>, <append>)
# The hook names are handled by the self._environment_hook method.
# - names starting with 'self.' call methods in this class
# - names starting with 'exe.' return the key in the executables dict
# - names like 'flags.YYY' return self.get_flag_YYY()
# convert is either None or a function to convert a string to the
# appropriate type used.
distutils_vars = EnvironmentConfig(
distutils_section='config_fc',
noopt = (None, None, 'noopt', str2bool, False),
noarch = (None, None, 'noarch', str2bool, False),
debug = (None, None, 'debug', str2bool, False),
verbose = (None, None, 'verbose', str2bool, False),
)
command_vars = EnvironmentConfig(
distutils_section='config_fc',
compiler_f77 = ('exe.compiler_f77', 'F77', 'f77exec', None, False),
compiler_f90 = ('exe.compiler_f90', 'F90', 'f90exec', None, False),
compiler_fix = ('exe.compiler_fix', 'F90', 'f90exec', None, False),
version_cmd = ('exe.version_cmd', None, None, None, False),
linker_so = ('exe.linker_so', 'LDSHARED', 'ldshared', None, False),
linker_exe = ('exe.linker_exe', 'LD', 'ld', None, False),
archiver = (None, 'AR', 'ar', None, False),
ranlib = (None, 'RANLIB', 'ranlib', None, False),
)
flag_vars = EnvironmentConfig(
distutils_section='config_fc',
f77 = ('flags.f77', 'F77FLAGS', 'f77flags', flaglist, True),
f90 = ('flags.f90', 'F90FLAGS', 'f90flags', flaglist, True),
free = ('flags.free', 'FREEFLAGS', 'freeflags', flaglist, True),
fix = ('flags.fix', None, None, flaglist, False),
opt = ('flags.opt', 'FOPT', 'opt', flaglist, True),
opt_f77 = ('flags.opt_f77', None, None, flaglist, False),
opt_f90 = ('flags.opt_f90', None, None, flaglist, False),
arch = ('flags.arch', 'FARCH', 'arch', flaglist, False),
arch_f77 = ('flags.arch_f77', None, None, flaglist, False),
arch_f90 = ('flags.arch_f90', None, None, flaglist, False),
debug = ('flags.debug', 'FDEBUG', 'fdebug', flaglist, True),
debug_f77 = ('flags.debug_f77', None, None, flaglist, False),
debug_f90 = ('flags.debug_f90', None, None, flaglist, False),
flags = ('self.get_flags', 'FFLAGS', 'fflags', flaglist, True),
linker_so = ('flags.linker_so', 'LDFLAGS', 'ldflags', flaglist, True),
linker_exe = ('flags.linker_exe', 'LDFLAGS', 'ldflags', flaglist, True),
ar = ('flags.ar', 'ARFLAGS', 'arflags', flaglist, True),
)
language_map = {'.f': 'f77',
'.for': 'f77',
'.F': 'f77', # XXX: needs preprocessor
'.ftn': 'f77',
'.f77': 'f77',
'.f90': 'f90',
'.F90': 'f90', # XXX: needs preprocessor
'.f95': 'f90',
}
language_order = ['f90', 'f77']
# These will be set by the subclass
compiler_type = None
compiler_aliases = ()
version_pattern = None
possible_executables = []
executables = {
'version_cmd': ["f77", "-v"],
'compiler_f77': ["f77"],
'compiler_f90': ["f90"],
'compiler_fix': ["f90", "-fixed"],
'linker_so': ["f90", "-shared"],
'linker_exe': ["f90"],
'archiver': ["ar", "-cr"],
'ranlib': None,
}
# If compiler does not support compiling Fortran 90 then it can
# suggest using another compiler. For example, gnu would suggest
# gnu95 compiler type when there are F90 sources.
suggested_f90_compiler = None
compile_switch = "-c"
object_switch = "-o " # Ending space matters! It will be stripped
# but if it is missing then object_switch
# will be prefixed to object file name by
# string concatenation.
library_switch = "-o " # Ditto!
# Switch to specify where module files are created and searched
# for USE statement. Normally it is a string and also here ending
# space matters. See above.
module_dir_switch = None
# Switch to specify where module files are searched for USE statement.
module_include_switch = '-I'
pic_flags = [] # Flags to create position-independent code
src_extensions = ['.for', '.ftn', '.f77', '.f', '.f90', '.f95', '.F', '.F90', '.FOR']
obj_extension = ".o"
shared_lib_extension = get_shared_lib_extension()
static_lib_extension = ".a" # or .lib
static_lib_format = "lib%s%s" # or %s%s
shared_lib_format = "%s%s"
exe_extension = ""
_exe_cache = {}
_executable_keys = ['version_cmd', 'compiler_f77', 'compiler_f90',
'compiler_fix', 'linker_so', 'linker_exe', 'archiver',
'ranlib']
# This will be set by new_fcompiler when called in
# command/{build_ext.py, build_clib.py, config.py} files.
c_compiler = None
# extra_{f77,f90}_compile_args are set by build_ext.build_extension method
extra_f77_compile_args = []
extra_f90_compile_args = []
def __init__(self, *args, **kw):
CCompiler.__init__(self, *args, **kw)
self.distutils_vars = self.distutils_vars.clone(self._environment_hook)
self.command_vars = self.command_vars.clone(self._environment_hook)
self.flag_vars = self.flag_vars.clone(self._environment_hook)
self.executables = self.executables.copy()
for e in self._executable_keys:
if e not in self.executables:
self.executables[e] = None
# Some methods depend on .customize() being called first, so
# this keeps track of whether that's happened yet.
self._is_customised = False
def __copy__(self):
obj = self.__new__(self.__class__)
obj.__dict__.update(self.__dict__)
obj.distutils_vars = obj.distutils_vars.clone(obj._environment_hook)
obj.command_vars = obj.command_vars.clone(obj._environment_hook)
obj.flag_vars = obj.flag_vars.clone(obj._environment_hook)
obj.executables = obj.executables.copy()
return obj
def copy(self):
return self.__copy__()
# Use properties for the attributes used by CCompiler. Setting them
# as attributes from the self.executables dictionary is error-prone,
# so we get them from there each time.
def _command_property(key):
def fget(self):
assert self._is_customised
return self.executables[key]
return property(fget=fget)
version_cmd = _command_property('version_cmd')
compiler_f77 = _command_property('compiler_f77')
compiler_f90 = _command_property('compiler_f90')
compiler_fix = _command_property('compiler_fix')
linker_so = _command_property('linker_so')
linker_exe = _command_property('linker_exe')
archiver = _command_property('archiver')
ranlib = _command_property('ranlib')
# Make our terminology consistent.
def set_executable(self, key, value):
self.set_command(key, value)
def set_commands(self, **kw):
for k, v in kw.items():
self.set_command(k, v)
def set_command(self, key, value):
if not key in self._executable_keys:
raise ValueError(
"unknown executable '%s' for class %s" %
(key, self.__class__.__name__))
if is_string(value):
value = split_quoted(value)
assert value is None or is_sequence_of_strings(value[1:]), (key, value)
self.executables[key] = value
######################################################################
## Methods that subclasses may redefine. But don't call these methods!
## They are private to FCompiler class and may return unexpected
## results if used elsewhere. So, you have been warned..
def find_executables(self):
"""Go through the self.executables dictionary, and attempt to
find and assign appropriate executables.
Executable names are looked for in the environment (environment
variables, the distutils.cfg, and command line), the 0th-element of
the command list, and the self.possible_executables list.
Also, if the 0th element is "<F77>" or "<F90>", the Fortran 77
or the Fortran 90 compiler executable is used, unless overridden
by an environment setting.
Subclasses should call this if overridden.
"""
assert self._is_customised
exe_cache = self._exe_cache
def cached_find_executable(exe):
if exe in exe_cache:
return exe_cache[exe]
fc_exe = find_executable(exe)
exe_cache[exe] = exe_cache[fc_exe] = fc_exe
return fc_exe
def verify_command_form(name, value):
if value is not None and not is_sequence_of_strings(value):
raise ValueError(
"%s value %r is invalid in class %s" %
(name, value, self.__class__.__name__))
def set_exe(exe_key, f77=None, f90=None):
cmd = self.executables.get(exe_key, None)
if not cmd:
return None
# Note that we get cmd[0] here if the environment doesn't
# have anything set
exe_from_environ = getattr(self.command_vars, exe_key)
if not exe_from_environ:
possibles = [f90, f77] + self.possible_executables
else:
possibles = [exe_from_environ] + self.possible_executables
seen = set()
unique_possibles = []
for e in possibles:
if e == '<F77>':
e = f77
elif e == '<F90>':
e = f90
if not e or e in seen:
continue
seen.add(e)
unique_possibles.append(e)
for exe in unique_possibles:
fc_exe = cached_find_executable(exe)
if fc_exe:
cmd[0] = fc_exe
return fc_exe
self.set_command(exe_key, None)
return None
ctype = self.compiler_type
f90 = set_exe('compiler_f90')
if not f90:
f77 = set_exe('compiler_f77')
if f77:
log.warn('%s: no Fortran 90 compiler found' % ctype)
else:
raise CompilerNotFound('%s: f90 nor f77' % ctype)
else:
f77 = set_exe('compiler_f77', f90=f90)
if not f77:
log.warn('%s: no Fortran 77 compiler found' % ctype)
set_exe('compiler_fix', f90=f90)
set_exe('linker_so', f77=f77, f90=f90)
set_exe('linker_exe', f77=f77, f90=f90)
set_exe('version_cmd', f77=f77, f90=f90)
set_exe('archiver')
set_exe('ranlib')
def update_executables(self):
"""Called at the beginning of customisation. Subclasses should
override this if they need to set up the executables dictionary.
Note that self.find_executables() is run afterwards, so the
self.executables dictionary values can contain <F77> or <F90> as
the command, which will be replaced by the found F77 or F90
compiler.
"""
pass
def get_flags(self):
"""List of flags common to all compiler types."""
return [] + self.pic_flags
def _get_command_flags(self, key):
cmd = self.executables.get(key, None)
if cmd is None:
return []
return cmd[1:]
def get_flags_f77(self):
"""List of Fortran 77 specific flags."""
return self._get_command_flags('compiler_f77')
def get_flags_f90(self):
"""List of Fortran 90 specific flags."""
return self._get_command_flags('compiler_f90')
def get_flags_free(self):
"""List of Fortran 90 free format specific flags."""
return []
def get_flags_fix(self):
"""List of Fortran 90 fixed format specific flags."""
return self._get_command_flags('compiler_fix')
def get_flags_linker_so(self):
"""List of linker flags to build a shared library."""
return self._get_command_flags('linker_so')
def get_flags_linker_exe(self):
"""List of linker flags to build an executable."""
return self._get_command_flags('linker_exe')
def get_flags_ar(self):
"""List of archiver flags. """
return self._get_command_flags('archiver')
def get_flags_opt(self):
"""List of architecture independent compiler flags."""
return []
def get_flags_arch(self):
"""List of architecture dependent compiler flags."""
return []
def get_flags_debug(self):
"""List of compiler flags to compile with debugging information."""
return []
get_flags_opt_f77 = get_flags_opt_f90 = get_flags_opt
get_flags_arch_f77 = get_flags_arch_f90 = get_flags_arch
get_flags_debug_f77 = get_flags_debug_f90 = get_flags_debug
def get_libraries(self):
"""List of compiler libraries."""
return self.libraries[:]
def get_library_dirs(self):
"""List of compiler library directories."""
return self.library_dirs[:]
def get_version(self, force=False, ok_status=[0]):
assert self._is_customised
version = CCompiler.get_version(self, force=force, ok_status=ok_status)
if version is None:
raise CompilerNotFound()
return version
############################################################
## Public methods:
def customize(self, dist = None):
"""Customize Fortran compiler.
This method gets Fortran compiler specific information from
(i) class definition, (ii) environment, (iii) distutils config
files, and (iv) command line (later overrides earlier).
This method should be always called after constructing a
compiler instance. But not in __init__ because Distribution
instance is needed for (iii) and (iv).
"""
log.info('customize %s' % (self.__class__.__name__))
self._is_customised = True
self.distutils_vars.use_distribution(dist)
self.command_vars.use_distribution(dist)
self.flag_vars.use_distribution(dist)
self.update_executables()
# find_executables takes care of setting the compiler commands,
# version_cmd, linker_so, linker_exe, ar, and ranlib
self.find_executables()
noopt = self.distutils_vars.get('noopt', False)
noarch = self.distutils_vars.get('noarch', noopt)
debug = self.distutils_vars.get('debug', False)
f77 = self.command_vars.compiler_f77
f90 = self.command_vars.compiler_f90
f77flags = []
f90flags = []
freeflags = []
fixflags = []
if f77:
f77 = _shell_utils.NativeParser.split(f77)
f77flags = self.flag_vars.f77
if f90:
f90 = _shell_utils.NativeParser.split(f90)
f90flags = self.flag_vars.f90
freeflags = self.flag_vars.free
# XXX Assuming that free format is default for f90 compiler.
fix = self.command_vars.compiler_fix
# NOTE: this and similar examples are probably just
# excluding --coverage flag when F90 = gfortran --coverage
# instead of putting that flag somewhere more appropriate
# this and similar examples where a Fortran compiler
# environment variable has been customized by CI or a user
# should perhaps eventually be more thoroughly tested and more
# robustly handled
if fix:
fix = _shell_utils.NativeParser.split(fix)
fixflags = self.flag_vars.fix + f90flags
oflags, aflags, dflags = [], [], []
# examine get_flags_<tag>_<compiler> for extra flags
# only add them if the method is different from get_flags_<tag>
def get_flags(tag, flags):
# note that self.flag_vars.<tag> calls self.get_flags_<tag>()
flags.extend(getattr(self.flag_vars, tag))
this_get = getattr(self, 'get_flags_' + tag)
for name, c, flagvar in [('f77', f77, f77flags),
('f90', f90, f90flags),
('f90', fix, fixflags)]:
t = '%s_%s' % (tag, name)
if c and this_get is not getattr(self, 'get_flags_' + t):
flagvar.extend(getattr(self.flag_vars, t))
if not noopt:
get_flags('opt', oflags)
if not noarch:
get_flags('arch', aflags)
if debug:
get_flags('debug', dflags)
fflags = self.flag_vars.flags + dflags + oflags + aflags
if f77:
self.set_commands(compiler_f77=f77+f77flags+fflags)
if f90:
self.set_commands(compiler_f90=f90+freeflags+f90flags+fflags)
if fix:
self.set_commands(compiler_fix=fix+fixflags+fflags)
#XXX: Do we need LDSHARED->SOSHARED, LDFLAGS->SOFLAGS
linker_so = self.linker_so
if linker_so:
linker_so_flags = self.flag_vars.linker_so
if sys.platform.startswith('aix'):
python_lib = get_python_lib(standard_lib=1)
ld_so_aix = os.path.join(python_lib, 'config', 'ld_so_aix')
python_exp = os.path.join(python_lib, 'config', 'python.exp')
linker_so = [ld_so_aix] + linker_so + ['-bI:'+python_exp]
if sys.platform.startswith('os400'):
from distutils.sysconfig import get_config_var
python_config = get_config_var('LIBPL')
ld_so_aix = os.path.join(python_config, 'ld_so_aix')
python_exp = os.path.join(python_config, 'python.exp')
linker_so = [ld_so_aix] + linker_so + ['-bI:'+python_exp]
self.set_commands(linker_so=linker_so+linker_so_flags)
linker_exe = self.linker_exe
if linker_exe:
linker_exe_flags = self.flag_vars.linker_exe
self.set_commands(linker_exe=linker_exe+linker_exe_flags)
ar = self.command_vars.archiver
if ar:
arflags = self.flag_vars.ar
self.set_commands(archiver=[ar]+arflags)
self.set_library_dirs(self.get_library_dirs())
self.set_libraries(self.get_libraries())
def dump_properties(self):
"""Print out the attributes of a compiler instance."""
props = []
for key in list(self.executables.keys()) + \
['version', 'libraries', 'library_dirs',
'object_switch', 'compile_switch']:
if hasattr(self, key):
v = getattr(self, key)
props.append((key, None, '= '+repr(v)))
props.sort()
pretty_printer = FancyGetopt(props)
for l in pretty_printer.generate_help("%s instance properties:" \
% (self.__class__.__name__)):
if l[:4]==' --':
l = ' ' + l[4:]
print(l)
###################
def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts):
"""Compile 'src' to product 'obj'."""
src_flags = {}
if Path(src).suffix.lower() in FORTRAN_COMMON_FIXED_EXTENSIONS \
and not has_f90_header(src):
flavor = ':f77'
compiler = self.compiler_f77
src_flags = get_f77flags(src)
extra_compile_args = self.extra_f77_compile_args or []
elif is_free_format(src):
flavor = ':f90'
compiler = self.compiler_f90
if compiler is None:
raise DistutilsExecError('f90 not supported by %s needed for %s'\
% (self.__class__.__name__, src))
extra_compile_args = self.extra_f90_compile_args or []
else:
flavor = ':fix'
compiler = self.compiler_fix
if compiler is None:
raise DistutilsExecError('f90 (fixed) not supported by %s needed for %s'\
% (self.__class__.__name__, src))
extra_compile_args = self.extra_f90_compile_args or []
if self.object_switch[-1]==' ':
o_args = [self.object_switch.strip(), obj]
else:
o_args = [self.object_switch.strip()+obj]
assert self.compile_switch.strip()
s_args = [self.compile_switch, src]
if extra_compile_args:
log.info('extra %s options: %r' \
% (flavor[1:], ' '.join(extra_compile_args)))
extra_flags = src_flags.get(self.compiler_type, [])
if extra_flags:
log.info('using compile options from source: %r' \
% ' '.join(extra_flags))
command = compiler + cc_args + extra_flags + s_args + o_args \
+ extra_postargs + extra_compile_args
display = '%s: %s' % (os.path.basename(compiler[0]) + flavor,
src)
try:
self.spawn(command, display=display)
except DistutilsExecError as e:
msg = str(e)
raise CompileError(msg) from None
def module_options(self, module_dirs, module_build_dir):
options = []
if self.module_dir_switch is not None:
if self.module_dir_switch[-1]==' ':
options.extend([self.module_dir_switch.strip(), module_build_dir])
else:
options.append(self.module_dir_switch.strip()+module_build_dir)
else:
print('XXX: module_build_dir=%r option ignored' % (module_build_dir))
print('XXX: Fix module_dir_switch for ', self.__class__.__name__)
if self.module_include_switch is not None:
for d in [module_build_dir]+module_dirs:
options.append('%s%s' % (self.module_include_switch, d))
else:
print('XXX: module_dirs=%r option ignored' % (module_dirs))
print('XXX: Fix module_include_switch for ', self.__class__.__name__)
return options
def library_option(self, lib):
return "-l" + lib
def library_dir_option(self, dir):
return "-L" + dir
def link(self, target_desc, objects,
output_filename, output_dir=None, libraries=None,
library_dirs=None, runtime_library_dirs=None,
export_symbols=None, debug=0, extra_preargs=None,
extra_postargs=None, build_temp=None, target_lang=None):
objects, output_dir = self._fix_object_args(objects, output_dir)
libraries, library_dirs, runtime_library_dirs = \
self._fix_lib_args(libraries, library_dirs, runtime_library_dirs)
lib_opts = gen_lib_options(self, library_dirs, runtime_library_dirs,
libraries)
if is_string(output_dir):
output_filename = os.path.join(output_dir, output_filename)
elif output_dir is not None:
raise TypeError("'output_dir' must be a string or None")
if self._need_link(objects, output_filename):
if self.library_switch[-1]==' ':
o_args = [self.library_switch.strip(), output_filename]
else:
o_args = [self.library_switch.strip()+output_filename]
if is_string(self.objects):
ld_args = objects + [self.objects]
else:
ld_args = objects + self.objects
ld_args = ld_args + lib_opts + o_args
if debug:
ld_args[:0] = ['-g']
if extra_preargs:
ld_args[:0] = extra_preargs
if extra_postargs:
ld_args.extend(extra_postargs)
self.mkpath(os.path.dirname(output_filename))
if target_desc == CCompiler.EXECUTABLE:
linker = self.linker_exe[:]
else:
linker = self.linker_so[:]
command = linker + ld_args
try:
self.spawn(command)
except DistutilsExecError as e:
msg = str(e)
raise LinkError(msg) from None
else:
log.debug("skipping %s (up-to-date)", output_filename)
def _environment_hook(self, name, hook_name):
if hook_name is None:
return None
if is_string(hook_name):
if hook_name.startswith('self.'):
hook_name = hook_name[5:]
hook = getattr(self, hook_name)
return hook()
elif hook_name.startswith('exe.'):
hook_name = hook_name[4:]
var = self.executables[hook_name]
if var:
return var[0]
else:
return None
elif hook_name.startswith('flags.'):
hook_name = hook_name[6:]
hook = getattr(self, 'get_flags_' + hook_name)
return hook()
else:
return hook_name()
def can_ccompiler_link(self, ccompiler):
"""
Check if the given C compiler can link objects produced by
this compiler.
"""
return True
def wrap_unlinkable_objects(self, objects, output_dir, extra_dll_dir):
"""
Convert a set of object files that are not compatible with the default
linker, to a file that is compatible.
Parameters
----------
objects : list
List of object files to include.
output_dir : str
Output directory to place generated object files.
extra_dll_dir : str
Output directory to place extra DLL files that need to be
included on Windows.
Returns
-------
converted_objects : list of str
List of converted object files.
Note that the number of output files is not necessarily
the same as inputs.
"""
raise NotImplementedError()
## class FCompiler
_default_compilers = (
# sys.platform mappings
('win32', ('gnu', 'intelv', 'absoft', 'compaqv', 'intelev', 'gnu95', 'g95',
'intelvem', 'intelem', 'flang')),
('cygwin.*', ('gnu', 'intelv', 'absoft', 'compaqv', 'intelev', 'gnu95', 'g95')),
('linux.*', ('arm', 'gnu95', 'intel', 'lahey', 'pg', 'nv', 'absoft', 'nag',
'vast', 'compaq', 'intele', 'intelem', 'gnu', 'g95',
'pathf95', 'nagfor', 'fujitsu')),
('darwin.*', ('gnu95', 'nag', 'nagfor', 'absoft', 'ibm', 'intel', 'gnu',
'g95', 'pg')),
('sunos.*', ('sun', 'gnu', 'gnu95', 'g95')),
('irix.*', ('mips', 'gnu', 'gnu95',)),
('aix.*', ('ibm', 'gnu', 'gnu95',)),
# os.name mappings
('posix', ('gnu', 'gnu95',)),
('nt', ('gnu', 'gnu95',)),
('mac', ('gnu95', 'gnu', 'pg')),
)
fcompiler_class = None
fcompiler_aliases = None
def load_all_fcompiler_classes():
"""Cache all the FCompiler classes found in modules in the
numpy.distutils.fcompiler package.
"""
from glob import glob
global fcompiler_class, fcompiler_aliases
if fcompiler_class is not None:
return
pys = os.path.join(os.path.dirname(__file__), '*.py')
fcompiler_class = {}
fcompiler_aliases = {}
for fname in glob(pys):
module_name, ext = os.path.splitext(os.path.basename(fname))
module_name = 'numpy.distutils.fcompiler.' + module_name
__import__ (module_name)
module = sys.modules[module_name]
if hasattr(module, 'compilers'):
for cname in module.compilers:
klass = getattr(module, cname)
desc = (klass.compiler_type, klass, klass.description)
fcompiler_class[klass.compiler_type] = desc
for alias in klass.compiler_aliases:
if alias in fcompiler_aliases:
raise ValueError("alias %r defined for both %s and %s"
% (alias, klass.__name__,
fcompiler_aliases[alias][1].__name__))
fcompiler_aliases[alias] = desc
def _find_existing_fcompiler(compiler_types,
osname=None, platform=None,
requiref90=False,
c_compiler=None):
from numpy.distutils.core import get_distribution
dist = get_distribution(always=True)
for compiler_type in compiler_types:
v = None
try:
c = new_fcompiler(plat=platform, compiler=compiler_type,
c_compiler=c_compiler)
c.customize(dist)
v = c.get_version()
if requiref90 and c.compiler_f90 is None:
v = None
new_compiler = c.suggested_f90_compiler
if new_compiler:
log.warn('Trying %r compiler as suggested by %r '
'compiler for f90 support.' % (compiler_type,
new_compiler))
c = new_fcompiler(plat=platform, compiler=new_compiler,
c_compiler=c_compiler)
c.customize(dist)
v = c.get_version()
if v is not None:
compiler_type = new_compiler
if requiref90 and c.compiler_f90 is None:
raise ValueError('%s does not support compiling f90 codes, '
'skipping.' % (c.__class__.__name__))
except DistutilsModuleError:
log.debug("_find_existing_fcompiler: compiler_type='%s' raised DistutilsModuleError", compiler_type)
except CompilerNotFound:
log.debug("_find_existing_fcompiler: compiler_type='%s' not found", compiler_type)
if v is not None:
return compiler_type
return None
def available_fcompilers_for_platform(osname=None, platform=None):
if osname is None:
osname = os.name
if platform is None:
platform = sys.platform
matching_compiler_types = []
for pattern, compiler_type in _default_compilers:
if re.match(pattern, platform) or re.match(pattern, osname):
for ct in compiler_type:
if ct not in matching_compiler_types:
matching_compiler_types.append(ct)
if not matching_compiler_types:
matching_compiler_types.append('gnu')
return matching_compiler_types
def get_default_fcompiler(osname=None, platform=None, requiref90=False,
c_compiler=None):
"""Determine the default Fortran compiler to use for the given
platform."""
matching_compiler_types = available_fcompilers_for_platform(osname,
platform)
log.info("get_default_fcompiler: matching types: '%s'",
matching_compiler_types)
compiler_type = _find_existing_fcompiler(matching_compiler_types,
osname=osname,
platform=platform,
requiref90=requiref90,
c_compiler=c_compiler)
return compiler_type
# Flag to avoid rechecking for Fortran compiler every time
failed_fcompilers = set()
def new_fcompiler(plat=None,
compiler=None,
verbose=0,
dry_run=0,
force=0,
requiref90=False,
c_compiler = None):
"""Generate an instance of some FCompiler subclass for the supplied
platform/compiler combination.
"""
global failed_fcompilers
fcompiler_key = (plat, compiler)
if fcompiler_key in failed_fcompilers:
return None
load_all_fcompiler_classes()
if plat is None:
plat = os.name
if compiler is None:
compiler = get_default_fcompiler(plat, requiref90=requiref90,
c_compiler=c_compiler)
if compiler in fcompiler_class:
module_name, klass, long_description = fcompiler_class[compiler]
elif compiler in fcompiler_aliases:
module_name, klass, long_description = fcompiler_aliases[compiler]
else:
msg = "don't know how to compile Fortran code on platform '%s'" % plat
if compiler is not None:
msg = msg + " with '%s' compiler." % compiler
msg = msg + " Supported compilers are: %s)" \
% (','.join(fcompiler_class.keys()))
log.warn(msg)
failed_fcompilers.add(fcompiler_key)
return None
compiler = klass(verbose=verbose, dry_run=dry_run, force=force)
compiler.c_compiler = c_compiler
return compiler
def show_fcompilers(dist=None):
"""Print list of available compilers (used by the "--help-fcompiler"
option to "config_fc").
"""
if dist is None:
from distutils.dist import Distribution
from numpy.distutils.command.config_compiler import config_fc
dist = Distribution()
dist.script_name = os.path.basename(sys.argv[0])
dist.script_args = ['config_fc'] + sys.argv[1:]
try:
dist.script_args.remove('--help-fcompiler')
except ValueError:
pass
dist.cmdclass['config_fc'] = config_fc
dist.parse_config_files()
dist.parse_command_line()
compilers = []
compilers_na = []
compilers_ni = []
if not fcompiler_class:
load_all_fcompiler_classes()
platform_compilers = available_fcompilers_for_platform()
for compiler in platform_compilers:
v = None
log.set_verbosity(-2)
try:
c = new_fcompiler(compiler=compiler, verbose=dist.verbose)
c.customize(dist)
v = c.get_version()
except (DistutilsModuleError, CompilerNotFound) as e:
log.debug("show_fcompilers: %s not found" % (compiler,))
log.debug(repr(e))
if v is None:
compilers_na.append(("fcompiler="+compiler, None,
fcompiler_class[compiler][2]))
else:
c.dump_properties()
compilers.append(("fcompiler="+compiler, None,
fcompiler_class[compiler][2] + ' (%s)' % v))
compilers_ni = list(set(fcompiler_class.keys()) - set(platform_compilers))
compilers_ni = [("fcompiler="+fc, None, fcompiler_class[fc][2])
for fc in compilers_ni]
compilers.sort()
compilers_na.sort()
compilers_ni.sort()
pretty_printer = FancyGetopt(compilers)
pretty_printer.print_help("Fortran compilers found:")
pretty_printer = FancyGetopt(compilers_na)
pretty_printer.print_help("Compilers available for this "
"platform, but not found:")
if compilers_ni:
pretty_printer = FancyGetopt(compilers_ni)
pretty_printer.print_help("Compilers not available on this platform:")
print("For compiler details, run 'config_fc --verbose' setup command.")
def dummy_fortran_file():
fo, name = make_temp_file(suffix='.f')
fo.write(" subroutine dummy()\n end\n")
fo.close()
return name[:-2]
_has_f_header = re.compile(r'-\*-\s*fortran\s*-\*-', re.I).search
_has_f90_header = re.compile(r'-\*-\s*f90\s*-\*-', re.I).search
_has_fix_header = re.compile(r'-\*-\s*fix\s*-\*-', re.I).search
_free_f90_start = re.compile(r'[^c*!]\s*[^\s\d\t]', re.I).match
def is_free_format(file):
"""Check if file is in free format Fortran."""
# f90 allows both fixed and free format, assuming fixed unless
# signs of free format are detected.
result = 0
with open(file, encoding='latin1') as f:
line = f.readline()
n = 10000 # the number of non-comment lines to scan for hints
if _has_f_header(line) or _has_fix_header(line):
n = 0
elif _has_f90_header(line):
n = 0
result = 1
while n>0 and line:
line = line.rstrip()
if line and line[0]!='!':
n -= 1
if (line[0]!='\t' and _free_f90_start(line[:5])) or line[-1:]=='&':
result = 1
break
line = f.readline()
return result
def has_f90_header(src):
with open(src, encoding='latin1') as f:
line = f.readline()
return _has_f90_header(line) or _has_fix_header(line)
_f77flags_re = re.compile(r'(c|)f77flags\s*\(\s*(?P<fcname>\w+)\s*\)\s*=\s*(?P<fflags>.*)', re.I)
def get_f77flags(src):
"""
Search the first 20 lines of fortran 77 code for line pattern
`CF77FLAGS(<fcompiler type>)=<f77 flags>`
Return a dictionary {<fcompiler type>:<f77 flags>}.
"""
flags = {}
with open(src, encoding='latin1') as f:
i = 0
for line in f:
i += 1
if i>20: break
m = _f77flags_re.match(line)
if not m: continue
fcname = m.group('fcname').strip()
fflags = m.group('fflags').strip()
flags[fcname] = split_quoted(fflags)
return flags
# TODO: implement get_f90flags and use it in _compile similarly to get_f77flags
if __name__ == '__main__':
show_fcompilers()
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