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import re
import os
import sys
import warnings
import platform
import tempfile
from subprocess import Popen, PIPE, STDOUT
from numpy.distutils.cpuinfo import cpu
from numpy.distutils.fcompiler import FCompiler
from numpy.distutils.exec_command import exec_command
from numpy.distutils.misc_util import msvc_runtime_library
compilers = ['GnuFCompiler', 'Gnu95FCompiler']
TARGET_R = re.compile("Target: ([a-zA-Z0-9_\-]*)")
# XXX: handle cross compilation
def is_win64():
return sys.platform == "win32" and platform.architecture()[0] == "64bit"
if is_win64():
#_EXTRAFLAGS = ["-fno-leading-underscore"]
_EXTRAFLAGS = []
else:
_EXTRAFLAGS = []
class GnuFCompiler(FCompiler):
compiler_type = 'gnu'
compiler_aliases = ('g77',)
description = 'GNU Fortran 77 compiler'
def gnu_version_match(self, version_string):
"""Handle the different versions of GNU fortran compilers"""
m = re.match(r'GNU Fortran', version_string)
if not m:
return None
m = re.match(r'GNU Fortran\s+95.*?([0-9-.]+)', version_string)
if m:
return ('gfortran', m.group(1))
m = re.match(r'GNU Fortran.*?([0-9-.]+)', version_string)
if m:
v = m.group(1)
if v.startswith('0') or v.startswith('2') or v.startswith('3'):
# the '0' is for early g77's
return ('g77', v)
else:
# at some point in the 4.x series, the ' 95' was dropped
# from the version string
return ('gfortran', v)
def version_match(self, version_string):
v = self.gnu_version_match(version_string)
if not v or v[0] != 'g77':
return None
return v[1]
# 'g77 --version' results
# SunOS: GNU Fortran (GCC 3.2) 3.2 20020814 (release)
# Debian: GNU Fortran (GCC) 3.3.3 20040110 (prerelease) (Debian)
# GNU Fortran (GCC) 3.3.3 (Debian 20040401)
# GNU Fortran 0.5.25 20010319 (prerelease)
# Redhat: GNU Fortran (GCC 3.2.2 20030222 (Red Hat Linux 3.2.2-5)) 3.2.2 20030222 (Red Hat Linux 3.2.2-5)
# GNU Fortran (GCC) 3.4.2 (mingw-special)
possible_executables = ['g77', 'f77']
executables = {
'version_cmd' : [None, "--version"],
'compiler_f77' : [None, "-g", "-Wall", "-fno-second-underscore"],
'compiler_f90' : None, # Use --fcompiler=gnu95 for f90 codes
'compiler_fix' : None,
'linker_so' : [None, "-g", "-Wall"],
'archiver' : ["ar", "-cr"],
'ranlib' : ["ranlib"],
'linker_exe' : [None, "-g", "-Wall"]
}
module_dir_switch = None
module_include_switch = None
# Cygwin: f771: warning: -fPIC ignored for target (all code is
# position independent)
if os.name != 'nt' and sys.platform != 'cygwin':
pic_flags = ['-fPIC']
# use -mno-cygwin for g77 when Python is not Cygwin-Python
if sys.platform == 'win32':
for key in ['version_cmd', 'compiler_f77', 'linker_so', 'linker_exe']:
executables[key].append('-mno-cygwin')
g2c = 'g2c'
suggested_f90_compiler = 'gnu95'
#def get_linker_so(self):
# # win32 linking should be handled by standard linker
# # Darwin g77 cannot be used as a linker.
# #if re.match(r'(darwin)', sys.platform):
# # return
# return FCompiler.get_linker_so(self)
def get_flags_linker_so(self):
opt = self.linker_so[1:]
if sys.platform=='darwin':
target = os.environ.get('MACOSX_DEPLOYMENT_TARGET', None)
# If MACOSX_DEPLOYMENT_TARGET is set, we simply trust the value
# and leave it alone. But, distutils will complain if the
# environment's value is different from the one in the Python
# Makefile used to build Python. We let disutils handle this
# error checking.
if not target:
# If MACOSX_DEPLOYMENT_TARGET is not set in the environment,
# we try to get it first from the Python Makefile and then we
# fall back to setting it to 10.3 to maximize the set of
# versions we can work with. This is a reasonable default
# even when using the official Python dist and those derived
# from it.
import distutils.sysconfig as sc
g = {}
filename = sc.get_makefile_filename()
sc.parse_makefile(filename, g)
target = g.get('MACOSX_DEPLOYMENT_TARGET', '10.3')
os.environ['MACOSX_DEPLOYMENT_TARGET'] = target
if target == '10.3':
s = 'Env. variable MACOSX_DEPLOYMENT_TARGET set to 10.3'
warnings.warn(s)
opt.extend(['-undefined', 'dynamic_lookup', '-bundle'])
else:
opt.append("-shared")
if sys.platform.startswith('sunos'):
# SunOS often has dynamically loaded symbols defined in the
# static library libg2c.a The linker doesn't like this. To
# ignore the problem, use the -mimpure-text flag. It isn't
# the safest thing, but seems to work. 'man gcc' says:
# ".. Instead of using -mimpure-text, you should compile all
# source code with -fpic or -fPIC."
opt.append('-mimpure-text')
return opt
def get_libgcc_dir(self):
status, output = exec_command(self.compiler_f77 +
['-print-libgcc-file-name'],
use_tee=0)
if not status:
return os.path.dirname(output)
return None
def get_library_dirs(self):
opt = []
if sys.platform[:5] != 'linux':
d = self.get_libgcc_dir()
if d:
# if windows and not cygwin, libg2c lies in a different folder
if sys.platform == 'win32' and not d.startswith('/usr/lib'):
d = os.path.normpath(d)
if not os.path.exists(os.path.join(d, "lib%s.a" % self.g2c)):
d2 = os.path.abspath(os.path.join(d,
'../../../../lib'))
if os.path.exists(os.path.join(d2, "lib%s.a" % self.g2c)):
opt.append(d2)
opt.append(d)
return opt
def get_libraries(self):
opt = []
d = self.get_libgcc_dir()
if d is not None:
g2c = self.g2c + '-pic'
f = self.static_lib_format % (g2c, self.static_lib_extension)
if not os.path.isfile(os.path.join(d,f)):
g2c = self.g2c
else:
g2c = self.g2c
if g2c is not None:
opt.append(g2c)
c_compiler = self.c_compiler
if sys.platform == 'win32' and c_compiler and \
c_compiler.compiler_type=='msvc':
# the following code is not needed (read: breaks) when using MinGW
# in case want to link F77 compiled code with MSVC
opt.append('gcc')
runtime_lib = msvc_runtime_library()
if runtime_lib:
opt.append(runtime_lib)
if sys.platform == 'darwin':
opt.append('cc_dynamic')
return opt
def get_flags_debug(self):
return ['-g']
def get_flags_opt(self):
if self.get_version()<='3.3.3':
# With this compiler version building Fortran BLAS/LAPACK
# with -O3 caused failures in lib.lapack heevr,syevr tests.
opt = ['-O2']
else:
opt = ['-O3']
opt.append('-funroll-loops')
return opt
def get_flags_arch(self):
return []
class Gnu95FCompiler(GnuFCompiler):
compiler_type = 'gnu95'
compiler_aliases = ('gfortran',)
description = 'GNU Fortran 95 compiler'
def version_match(self, version_string):
v = self.gnu_version_match(version_string)
if not v or v[0] != 'gfortran':
return None
return v[1]
# 'gfortran --version' results:
# XXX is the below right?
# Debian: GNU Fortran 95 (GCC 4.0.3 20051023 (prerelease) (Debian 4.0.2-3))
# GNU Fortran 95 (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
# OS X: GNU Fortran 95 (GCC) 4.1.0
# GNU Fortran 95 (GCC) 4.2.0 20060218 (experimental)
# GNU Fortran (GCC) 4.3.0 20070316 (experimental)
possible_executables = ['gfortran', 'f95']
executables = {
'version_cmd' : ["<F90>", "--version"],
'compiler_f77' : [None, "-Wall", "-ffixed-form",
"-fno-second-underscore"] + _EXTRAFLAGS,
'compiler_f90' : [None, "-Wall", "-fno-second-underscore"] + _EXTRAFLAGS,
'compiler_fix' : [None, "-Wall", "-ffixed-form",
"-fno-second-underscore"] + _EXTRAFLAGS,
'linker_so' : ["<F90>", "-Wall"],
'archiver' : ["ar", "-cr"],
'ranlib' : ["ranlib"],
'linker_exe' : [None, "-Wall"]
}
# use -mno-cygwin flag for g77 when Python is not Cygwin-Python
if sys.platform == 'win32':
for key in ['version_cmd', 'compiler_f77', 'compiler_f90',
'compiler_fix', 'linker_so', 'linker_exe']:
executables[key].append('-mno-cygwin')
module_dir_switch = '-J'
module_include_switch = '-I'
g2c = 'gfortran'
def _universal_flags(self, cmd):
"""Return a list of -arch flags for every supported architecture."""
if not sys.platform == 'darwin':
return []
arch_flags = []
for arch in ["ppc", "i686", "x86_64"]:
if _can_target(cmd, arch):
arch_flags.extend(["-arch", arch])
return arch_flags
def get_flags(self):
flags = GnuFCompiler.get_flags(self)
arch_flags = self._universal_flags(self.compiler_f90)
if arch_flags:
flags[:0] = arch_flags
return flags
def get_flags_linker_so(self):
flags = GnuFCompiler.get_flags_linker_so(self)
arch_flags = self._universal_flags(self.linker_so)
if arch_flags:
flags[:0] = arch_flags
return flags
def get_library_dirs(self):
opt = GnuFCompiler.get_library_dirs(self)
if sys.platform == 'win32':
c_compiler = self.c_compiler
if c_compiler and c_compiler.compiler_type == "msvc":
target = self.get_target()
if target:
d = os.path.normpath(self.get_libgcc_dir())
root = os.path.join(d, os.pardir, os.pardir, os.pardir, os.pardir)
mingwdir = os.path.normpath(os.path.join(root, target, "lib"))
full = os.path.join(mingwdir, "libmingwex.a")
if os.path.exists(full):
opt.append(mingwdir)
return opt
def get_libraries(self):
opt = GnuFCompiler.get_libraries(self)
if sys.platform == 'darwin':
opt.remove('cc_dynamic')
if sys.platform == 'win32':
c_compiler = self.c_compiler
if c_compiler and c_compiler.compiler_type == "msvc":
if "gcc" in opt:
i = opt.index("gcc")
opt.insert(i+1, "mingwex")
opt.insert(i+1, "mingw32")
# XXX: fix this mess, does not work for mingw
if is_win64():
c_compiler = self.c_compiler
if c_compiler and c_compiler.compiler_type == "msvc":
return []
else:
raise NotImplementedError("Only MS compiler supported with gfortran on win64")
return opt
def get_target(self):
status, output = exec_command(self.compiler_f77 +
['-v'],
use_tee=0)
if not status:
m = TARGET_R.search(output)
if m:
return m.group(1)
return ""
def get_flags_opt(self):
if is_win64():
return ['-O0']
else:
return GnuFCompiler.get_flags_opt(self)
def _can_target(cmd, arch):
"""Return true is the command supports the -arch flag for the given
architecture."""
newcmd = cmd[:]
fid, filename = tempfile.mkstemp(suffix=".f")
try:
d = os.path.dirname(filename)
output = os.path.splitext(filename)[0] + ".o"
try:
newcmd.extend(["-arch", arch, "-c", filename])
p = Popen(newcmd, stderr=STDOUT, stdout=PIPE, cwd=d)
p.communicate()
return p.returncode == 0
finally:
if os.path.exists(output):
os.remove(output)
finally:
os.remove(filename)
return False
if __name__ == '__main__':
from distutils import log
log.set_verbosity(2)
compiler = GnuFCompiler()
compiler.customize()
print compiler.get_version()
raw_input('Press ENTER to continue...')
try:
compiler = Gnu95FCompiler()
compiler.customize()
print compiler.get_version()
except Exception, msg:
print msg
raw_input('Press ENTER to continue...')
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