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2024-05-03 04:18:51 +03:00
#!/usr/bin/env python3
"""
f2py2e - Fortran to Python C/API generator. 2nd Edition.
See __usage__ below.
Copyright 1999 -- 2011 Pearu Peterson all rights reserved.
Copyright 2011 -- present NumPy Developers.
Permission to use, modify, and distribute this software is given under the
terms of the NumPy License.
NO WARRANTY IS EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
"""
import sys
import os
import pprint
import re
from pathlib import Path
from itertools import dropwhile
import argparse
import copy
from . import crackfortran
from . import rules
from . import cb_rules
from . import auxfuncs
from . import cfuncs
from . import f90mod_rules
from . import __version__
from . import capi_maps
from numpy.f2py._backends import f2py_build_generator
f2py_version = __version__.version
numpy_version = __version__.version
errmess = sys.stderr.write
# outmess=sys.stdout.write
show = pprint.pprint
outmess = auxfuncs.outmess
MESON_ONLY_VER = (sys.version_info >= (3, 12))
__usage__ =\
f"""Usage:
1) To construct extension module sources:
f2py [<options>] <fortran files> [[[only:]||[skip:]] \\
<fortran functions> ] \\
[: <fortran files> ...]
2) To compile fortran files and build extension modules:
f2py -c [<options>, <build_flib options>, <extra options>] <fortran files>
3) To generate signature files:
f2py -h <filename.pyf> ...< same options as in (1) >
Description: This program generates a Python C/API file (<modulename>module.c)
that contains wrappers for given fortran functions so that they
can be called from Python. With the -c option the corresponding
extension modules are built.
Options:
-h <filename> Write signatures of the fortran routines to file <filename>
and exit. You can then edit <filename> and use it instead
of <fortran files>. If <filename>==stdout then the
signatures are printed to stdout.
<fortran functions> Names of fortran routines for which Python C/API
functions will be generated. Default is all that are found
in <fortran files>.
<fortran files> Paths to fortran/signature files that will be scanned for
<fortran functions> in order to determine their signatures.
skip: Ignore fortran functions that follow until `:'.
only: Use only fortran functions that follow until `:'.
: Get back to <fortran files> mode.
-m <modulename> Name of the module; f2py generates a Python/C API
file <modulename>module.c or extension module <modulename>.
Default is 'untitled'.
'-include<header>' Writes additional headers in the C wrapper, can be passed
multiple times, generates #include <header> each time.
--[no-]lower Do [not] lower the cases in <fortran files>. By default,
--lower is assumed with -h key, and --no-lower without -h key.
--build-dir <dirname> All f2py generated files are created in <dirname>.
Default is tempfile.mkdtemp().
--overwrite-signature Overwrite existing signature file.
--[no-]latex-doc Create (or not) <modulename>module.tex.
Default is --no-latex-doc.
--short-latex Create 'incomplete' LaTeX document (without commands
\\documentclass, \\tableofcontents, and \\begin{{document}},
\\end{{document}}).
--[no-]rest-doc Create (or not) <modulename>module.rst.
Default is --no-rest-doc.
--debug-capi Create C/API code that reports the state of the wrappers
during runtime. Useful for debugging.
--[no-]wrap-functions Create Fortran subroutine wrappers to Fortran 77
functions. --wrap-functions is default because it ensures
maximum portability/compiler independence.
--include-paths <path1>:<path2>:... Search include files from the given
directories.
--help-link [..] List system resources found by system_info.py. See also
--link-<resource> switch below. [..] is optional list
of resources names. E.g. try 'f2py --help-link lapack_opt'.
--f2cmap <filename> Load Fortran-to-Python KIND specification from the given
file. Default: .f2py_f2cmap in current directory.
--quiet Run quietly.
--verbose Run with extra verbosity.
--skip-empty-wrappers Only generate wrapper files when needed.
-v Print f2py version ID and exit.
build backend options (only effective with -c)
[NO_MESON] is used to indicate an option not meant to be used
with the meson backend or above Python 3.12:
--fcompiler= Specify Fortran compiler type by vendor [NO_MESON]
--compiler= Specify distutils C compiler type [NO_MESON]
--help-fcompiler List available Fortran compilers and exit [NO_MESON]
--f77exec= Specify the path to F77 compiler [NO_MESON]
--f90exec= Specify the path to F90 compiler [NO_MESON]
--f77flags= Specify F77 compiler flags
--f90flags= Specify F90 compiler flags
--opt= Specify optimization flags [NO_MESON]
--arch= Specify architecture specific optimization flags [NO_MESON]
--noopt Compile without optimization [NO_MESON]
--noarch Compile without arch-dependent optimization [NO_MESON]
--debug Compile with debugging information
--dep <dependency>
Specify a meson dependency for the module. This may
be passed multiple times for multiple dependencies.
Dependencies are stored in a list for further processing.
Example: --dep lapack --dep scalapack
This will identify "lapack" and "scalapack" as dependencies
and remove them from argv, leaving a dependencies list
containing ["lapack", "scalapack"].
--backend <backend_type>
Specify the build backend for the compilation process.
The supported backends are 'meson' and 'distutils'.
If not specified, defaults to 'distutils'. On
Python 3.12 or higher, the default is 'meson'.
Extra options (only effective with -c):
--link-<resource> Link extension module with <resource> as defined
by numpy.distutils/system_info.py. E.g. to link
with optimized LAPACK libraries (vecLib on MacOSX,
ATLAS elsewhere), use --link-lapack_opt.
See also --help-link switch. [NO_MESON]
-L/path/to/lib/ -l<libname>
-D<define> -U<name>
-I/path/to/include/
<filename>.o <filename>.so <filename>.a
Using the following macros may be required with non-gcc Fortran
compilers:
-DPREPEND_FORTRAN -DNO_APPEND_FORTRAN -DUPPERCASE_FORTRAN
-DUNDERSCORE_G77
When using -DF2PY_REPORT_ATEXIT, a performance report of F2PY
interface is printed out at exit (platforms: Linux).
When using -DF2PY_REPORT_ON_ARRAY_COPY=<int>, a message is
sent to stderr whenever F2PY interface makes a copy of an
array. Integer <int> sets the threshold for array sizes when
a message should be shown.
Version: {f2py_version}
numpy Version: {numpy_version}
License: NumPy license (see LICENSE.txt in the NumPy source code)
Copyright 1999 -- 2011 Pearu Peterson all rights reserved.
Copyright 2011 -- present NumPy Developers.
https://numpy.org/doc/stable/f2py/index.html\n"""
def scaninputline(inputline):
files, skipfuncs, onlyfuncs, debug = [], [], [], []
f, f2, f3, f5, f6, f8, f9, f10 = 1, 0, 0, 0, 0, 0, 0, 0
verbose = 1
emptygen = True
dolc = -1
dolatexdoc = 0
dorestdoc = 0
wrapfuncs = 1
buildpath = '.'
include_paths, inputline = get_includes(inputline)
signsfile, modulename = None, None
options = {'buildpath': buildpath,
'coutput': None,
'f2py_wrapper_output': None}
for l in inputline:
if l == '':
pass
elif l == 'only:':
f = 0
elif l == 'skip:':
f = -1
elif l == ':':
f = 1
elif l[:8] == '--debug-':
debug.append(l[8:])
elif l == '--lower':
dolc = 1
elif l == '--build-dir':
f6 = 1
elif l == '--no-lower':
dolc = 0
elif l == '--quiet':
verbose = 0
elif l == '--verbose':
verbose += 1
elif l == '--latex-doc':
dolatexdoc = 1
elif l == '--no-latex-doc':
dolatexdoc = 0
elif l == '--rest-doc':
dorestdoc = 1
elif l == '--no-rest-doc':
dorestdoc = 0
elif l == '--wrap-functions':
wrapfuncs = 1
elif l == '--no-wrap-functions':
wrapfuncs = 0
elif l == '--short-latex':
options['shortlatex'] = 1
elif l == '--coutput':
f8 = 1
elif l == '--f2py-wrapper-output':
f9 = 1
elif l == '--f2cmap':
f10 = 1
elif l == '--overwrite-signature':
options['h-overwrite'] = 1
elif l == '-h':
f2 = 1
elif l == '-m':
f3 = 1
elif l[:2] == '-v':
print(f2py_version)
sys.exit()
elif l == '--show-compilers':
f5 = 1
elif l[:8] == '-include':
cfuncs.outneeds['userincludes'].append(l[9:-1])
cfuncs.userincludes[l[9:-1]] = '#include ' + l[8:]
elif l == '--skip-empty-wrappers':
emptygen = False
elif l[0] == '-':
errmess('Unknown option %s\n' % repr(l))
sys.exit()
elif f2:
f2 = 0
signsfile = l
elif f3:
f3 = 0
modulename = l
elif f6:
f6 = 0
buildpath = l
elif f8:
f8 = 0
options["coutput"] = l
elif f9:
f9 = 0
options["f2py_wrapper_output"] = l
elif f10:
f10 = 0
options["f2cmap_file"] = l
elif f == 1:
try:
with open(l):
pass
files.append(l)
except OSError as detail:
errmess(f'OSError: {detail!s}. Skipping file "{l!s}".\n')
elif f == -1:
skipfuncs.append(l)
elif f == 0:
onlyfuncs.append(l)
if not f5 and not files and not modulename:
print(__usage__)
sys.exit()
if not os.path.isdir(buildpath):
if not verbose:
outmess('Creating build directory %s\n' % (buildpath))
os.mkdir(buildpath)
if signsfile:
signsfile = os.path.join(buildpath, signsfile)
if signsfile and os.path.isfile(signsfile) and 'h-overwrite' not in options:
errmess(
'Signature file "%s" exists!!! Use --overwrite-signature to overwrite.\n' % (signsfile))
sys.exit()
options['emptygen'] = emptygen
options['debug'] = debug
options['verbose'] = verbose
if dolc == -1 and not signsfile:
options['do-lower'] = 0
else:
options['do-lower'] = dolc
if modulename:
options['module'] = modulename
if signsfile:
options['signsfile'] = signsfile
if onlyfuncs:
options['onlyfuncs'] = onlyfuncs
if skipfuncs:
options['skipfuncs'] = skipfuncs
options['dolatexdoc'] = dolatexdoc
options['dorestdoc'] = dorestdoc
options['wrapfuncs'] = wrapfuncs
options['buildpath'] = buildpath
options['include_paths'] = include_paths
options.setdefault('f2cmap_file', None)
return files, options
def callcrackfortran(files, options):
rules.options = options
crackfortran.debug = options['debug']
crackfortran.verbose = options['verbose']
if 'module' in options:
crackfortran.f77modulename = options['module']
if 'skipfuncs' in options:
crackfortran.skipfuncs = options['skipfuncs']
if 'onlyfuncs' in options:
crackfortran.onlyfuncs = options['onlyfuncs']
crackfortran.include_paths[:] = options['include_paths']
crackfortran.dolowercase = options['do-lower']
postlist = crackfortran.crackfortran(files)
if 'signsfile' in options:
outmess('Saving signatures to file "%s"\n' % (options['signsfile']))
pyf = crackfortran.crack2fortran(postlist)
if options['signsfile'][-6:] == 'stdout':
sys.stdout.write(pyf)
else:
with open(options['signsfile'], 'w') as f:
f.write(pyf)
if options["coutput"] is None:
for mod in postlist:
mod["coutput"] = "%smodule.c" % mod["name"]
else:
for mod in postlist:
mod["coutput"] = options["coutput"]
if options["f2py_wrapper_output"] is None:
for mod in postlist:
mod["f2py_wrapper_output"] = "%s-f2pywrappers.f" % mod["name"]
else:
for mod in postlist:
mod["f2py_wrapper_output"] = options["f2py_wrapper_output"]
return postlist
def buildmodules(lst):
cfuncs.buildcfuncs()
outmess('Building modules...\n')
modules, mnames, isusedby = [], [], {}
for item in lst:
if '__user__' in item['name']:
cb_rules.buildcallbacks(item)
else:
if 'use' in item:
for u in item['use'].keys():
if u not in isusedby:
isusedby[u] = []
isusedby[u].append(item['name'])
modules.append(item)
mnames.append(item['name'])
ret = {}
for module, name in zip(modules, mnames):
if name in isusedby:
outmess('\tSkipping module "%s" which is used by %s.\n' % (
name, ','.join('"%s"' % s for s in isusedby[name])))
else:
um = []
if 'use' in module:
for u in module['use'].keys():
if u in isusedby and u in mnames:
um.append(modules[mnames.index(u)])
else:
outmess(
f'\tModule "{name}" uses nonexisting "{u}" '
'which will be ignored.\n')
ret[name] = {}
dict_append(ret[name], rules.buildmodule(module, um))
return ret
def dict_append(d_out, d_in):
for (k, v) in d_in.items():
if k not in d_out:
d_out[k] = []
if isinstance(v, list):
d_out[k] = d_out[k] + v
else:
d_out[k].append(v)
def run_main(comline_list):
"""
Equivalent to running::
f2py <args>
where ``<args>=string.join(<list>,' ')``, but in Python. Unless
``-h`` is used, this function returns a dictionary containing
information on generated modules and their dependencies on source
files.
You cannot build extension modules with this function, that is,
using ``-c`` is not allowed. Use the ``compile`` command instead.
Examples
--------
The command ``f2py -m scalar scalar.f`` can be executed from Python as
follows.
.. literalinclude:: ../../source/f2py/code/results/run_main_session.dat
:language: python
"""
crackfortran.reset_global_f2py_vars()
f2pydir = os.path.dirname(os.path.abspath(cfuncs.__file__))
fobjhsrc = os.path.join(f2pydir, 'src', 'fortranobject.h')
fobjcsrc = os.path.join(f2pydir, 'src', 'fortranobject.c')
# gh-22819 -- begin
parser = make_f2py_compile_parser()
args, comline_list = parser.parse_known_args(comline_list)
pyf_files, _ = filter_files("", "[.]pyf([.]src|)", comline_list)
# Checks that no existing modulename is defined in a pyf file
# TODO: Remove all this when scaninputline is replaced
if args.module_name:
if "-h" in comline_list:
modname = (
args.module_name
) # Directly use from args when -h is present
else:
modname = validate_modulename(
pyf_files, args.module_name
) # Validate modname when -h is not present
comline_list += ['-m', modname] # needed for the rest of scaninputline
# gh-22819 -- end
files, options = scaninputline(comline_list)
auxfuncs.options = options
capi_maps.load_f2cmap_file(options['f2cmap_file'])
postlist = callcrackfortran(files, options)
isusedby = {}
for plist in postlist:
if 'use' in plist:
for u in plist['use'].keys():
if u not in isusedby:
isusedby[u] = []
isusedby[u].append(plist['name'])
for plist in postlist:
if plist['block'] == 'python module' and '__user__' in plist['name']:
if plist['name'] in isusedby:
# if not quiet:
outmess(
f'Skipping Makefile build for module "{plist["name"]}" '
'which is used by {}\n'.format(
','.join(f'"{s}"' for s in isusedby[plist['name']])))
if 'signsfile' in options:
if options['verbose'] > 1:
outmess(
'Stopping. Edit the signature file and then run f2py on the signature file: ')
outmess('%s %s\n' %
(os.path.basename(sys.argv[0]), options['signsfile']))
return
for plist in postlist:
if plist['block'] != 'python module':
if 'python module' not in options:
errmess(
'Tip: If your original code is Fortran source then you must use -m option.\n')
raise TypeError('All blocks must be python module blocks but got %s' % (
repr(plist['block'])))
auxfuncs.debugoptions = options['debug']
f90mod_rules.options = options
auxfuncs.wrapfuncs = options['wrapfuncs']
ret = buildmodules(postlist)
for mn in ret.keys():
dict_append(ret[mn], {'csrc': fobjcsrc, 'h': fobjhsrc})
return ret
def filter_files(prefix, suffix, files, remove_prefix=None):
"""
Filter files by prefix and suffix.
"""
filtered, rest = [], []
match = re.compile(prefix + r'.*' + suffix + r'\Z').match
if remove_prefix:
ind = len(prefix)
else:
ind = 0
for file in [x.strip() for x in files]:
if match(file):
filtered.append(file[ind:])
else:
rest.append(file)
return filtered, rest
def get_prefix(module):
p = os.path.dirname(os.path.dirname(module.__file__))
return p
class CombineIncludePaths(argparse.Action):
def __call__(self, parser, namespace, values, option_string=None):
include_paths_set = set(getattr(namespace, 'include_paths', []) or [])
if option_string == "--include_paths":
outmess("Use --include-paths or -I instead of --include_paths which will be removed")
if option_string == "--include-paths" or option_string == "--include_paths":
include_paths_set.update(values.split(':'))
else:
include_paths_set.add(values)
setattr(namespace, 'include_paths', list(include_paths_set))
def include_parser():
parser = argparse.ArgumentParser(add_help=False)
parser.add_argument("-I", dest="include_paths", action=CombineIncludePaths)
parser.add_argument("--include-paths", dest="include_paths", action=CombineIncludePaths)
parser.add_argument("--include_paths", dest="include_paths", action=CombineIncludePaths)
return parser
def get_includes(iline):
iline = (' '.join(iline)).split()
parser = include_parser()
args, remain = parser.parse_known_args(iline)
ipaths = args.include_paths
if args.include_paths is None:
ipaths = []
return ipaths, remain
def make_f2py_compile_parser():
parser = argparse.ArgumentParser(add_help=False)
parser.add_argument("--dep", action="append", dest="dependencies")
parser.add_argument("--backend", choices=['meson', 'distutils'], default='distutils')
parser.add_argument("-m", dest="module_name")
return parser
def preparse_sysargv():
# To keep backwards bug compatibility, newer flags are handled by argparse,
# and `sys.argv` is passed to the rest of `f2py` as is.
parser = make_f2py_compile_parser()
args, remaining_argv = parser.parse_known_args()
sys.argv = [sys.argv[0]] + remaining_argv
backend_key = args.backend
if MESON_ONLY_VER and backend_key == 'distutils':
outmess("Cannot use distutils backend with Python>=3.12,"
" using meson backend instead.\n")
backend_key = "meson"
return {
"dependencies": args.dependencies or [],
"backend": backend_key,
"modulename": args.module_name,
}
def run_compile():
"""
Do it all in one call!
"""
import tempfile
# Collect dependency flags, preprocess sys.argv
argy = preparse_sysargv()
modulename = argy["modulename"]
if modulename is None:
modulename = 'untitled'
dependencies = argy["dependencies"]
backend_key = argy["backend"]
build_backend = f2py_build_generator(backend_key)
i = sys.argv.index('-c')
del sys.argv[i]
remove_build_dir = 0
try:
i = sys.argv.index('--build-dir')
except ValueError:
i = None
if i is not None:
build_dir = sys.argv[i + 1]
del sys.argv[i + 1]
del sys.argv[i]
else:
remove_build_dir = 1
build_dir = tempfile.mkdtemp()
_reg1 = re.compile(r'--link-')
sysinfo_flags = [_m for _m in sys.argv[1:] if _reg1.match(_m)]
sys.argv = [_m for _m in sys.argv if _m not in sysinfo_flags]
if sysinfo_flags:
sysinfo_flags = [f[7:] for f in sysinfo_flags]
_reg2 = re.compile(
r'--((no-|)(wrap-functions|lower)|debug-capi|quiet|skip-empty-wrappers)|-include')
f2py_flags = [_m for _m in sys.argv[1:] if _reg2.match(_m)]
sys.argv = [_m for _m in sys.argv if _m not in f2py_flags]
f2py_flags2 = []
fl = 0
for a in sys.argv[1:]:
if a in ['only:', 'skip:']:
fl = 1
elif a == ':':
fl = 0
if fl or a == ':':
f2py_flags2.append(a)
if f2py_flags2 and f2py_flags2[-1] != ':':
f2py_flags2.append(':')
f2py_flags.extend(f2py_flags2)
sys.argv = [_m for _m in sys.argv if _m not in f2py_flags2]
_reg3 = re.compile(
r'--((f(90)?compiler(-exec|)|compiler)=|help-compiler)')
flib_flags = [_m for _m in sys.argv[1:] if _reg3.match(_m)]
sys.argv = [_m for _m in sys.argv if _m not in flib_flags]
_reg4 = re.compile(
r'--((f(77|90)(flags|exec)|opt|arch)=|(debug|noopt|noarch|help-fcompiler))')
fc_flags = [_m for _m in sys.argv[1:] if _reg4.match(_m)]
sys.argv = [_m for _m in sys.argv if _m not in fc_flags]
del_list = []
for s in flib_flags:
v = '--fcompiler='
if s[:len(v)] == v:
if MESON_ONLY_VER or backend_key == 'meson':
outmess(
"--fcompiler cannot be used with meson,"
"set compiler with the FC environment variable\n"
)
else:
from numpy.distutils import fcompiler
fcompiler.load_all_fcompiler_classes()
allowed_keys = list(fcompiler.fcompiler_class.keys())
nv = ov = s[len(v):].lower()
if ov not in allowed_keys:
vmap = {} # XXX
try:
nv = vmap[ov]
except KeyError:
if ov not in vmap.values():
print('Unknown vendor: "%s"' % (s[len(v):]))
nv = ov
i = flib_flags.index(s)
flib_flags[i] = '--fcompiler=' + nv
continue
for s in del_list:
i = flib_flags.index(s)
del flib_flags[i]
assert len(flib_flags) <= 2, repr(flib_flags)
_reg5 = re.compile(r'--(verbose)')
setup_flags = [_m for _m in sys.argv[1:] if _reg5.match(_m)]
sys.argv = [_m for _m in sys.argv if _m not in setup_flags]
if '--quiet' in f2py_flags:
setup_flags.append('--quiet')
# Ugly filter to remove everything but sources
sources = sys.argv[1:]
f2cmapopt = '--f2cmap'
if f2cmapopt in sys.argv:
i = sys.argv.index(f2cmapopt)
f2py_flags.extend(sys.argv[i:i + 2])
del sys.argv[i + 1], sys.argv[i]
sources = sys.argv[1:]
pyf_files, _sources = filter_files("", "[.]pyf([.]src|)", sources)
sources = pyf_files + _sources
modulename = validate_modulename(pyf_files, modulename)
extra_objects, sources = filter_files('', '[.](o|a|so|dylib)', sources)
library_dirs, sources = filter_files('-L', '', sources, remove_prefix=1)
libraries, sources = filter_files('-l', '', sources, remove_prefix=1)
undef_macros, sources = filter_files('-U', '', sources, remove_prefix=1)
define_macros, sources = filter_files('-D', '', sources, remove_prefix=1)
for i in range(len(define_macros)):
name_value = define_macros[i].split('=', 1)
if len(name_value) == 1:
name_value.append(None)
if len(name_value) == 2:
define_macros[i] = tuple(name_value)
else:
print('Invalid use of -D:', name_value)
# Construct wrappers / signatures / things
if backend_key == 'meson':
if not pyf_files:
outmess('Using meson backend\nWill pass --lower to f2py\nSee https://numpy.org/doc/stable/f2py/buildtools/meson.html\n')
f2py_flags.append('--lower')
run_main(f" {' '.join(f2py_flags)} -m {modulename} {' '.join(sources)}".split())
else:
run_main(f" {' '.join(f2py_flags)} {' '.join(pyf_files)}".split())
# Order matters here, includes are needed for run_main above
include_dirs, sources = get_includes(sources)
# Now use the builder
builder = build_backend(
modulename,
sources,
extra_objects,
build_dir,
include_dirs,
library_dirs,
libraries,
define_macros,
undef_macros,
f2py_flags,
sysinfo_flags,
fc_flags,
flib_flags,
setup_flags,
remove_build_dir,
{"dependencies": dependencies},
)
builder.compile()
def validate_modulename(pyf_files, modulename='untitled'):
if len(pyf_files) > 1:
raise ValueError("Only one .pyf file per call")
if pyf_files:
pyff = pyf_files[0]
pyf_modname = auxfuncs.get_f2py_modulename(pyff)
if modulename != pyf_modname:
outmess(
f"Ignoring -m {modulename}.\n"
f"{pyff} defines {pyf_modname} to be the modulename.\n"
)
modulename = pyf_modname
return modulename
def main():
if '--help-link' in sys.argv[1:]:
sys.argv.remove('--help-link')
if MESON_ONLY_VER:
outmess("Use --dep for meson builds\n")
else:
from numpy.distutils.system_info import show_all
show_all()
return
if '-c' in sys.argv[1:]:
run_compile()
else:
run_main(sys.argv[1:])