numpy.distutils, system_info and dll/exp/lib
David Cournapeau <david <at> ar.media.kyoto-u.ac.jp>
2007-06-01 03:14:51 GMT
Hi,
In one of my package, I use numpy.distutils.system_info to detect a
C library. This works well on linux and Mac OS X, but on windows, the
library is not detected if only the dll is present. If the .lib is
there, then it is detected; the dll itself works OK (I can use it from
ctypes normally). Am I doing something wrong in my configuration ?
"""
class SndfileNotFoundError(NotFoundError):
""" sndfile (http://www.mega-nerd.com/libsndfile/) library not found.
Directories to search for the libraries can be specified in the
site.cfg file (section [sndfile])."""
class sndfile_info(system_info):
#variables to override
section = 'sndfile'
notfounderror = SndfileNotFoundError
libname = 'sndfile'
header = 'sndfile.h'
def __init__(self):
system_info.__init__(self)
def calc_info(self):
""" Compute the informations of the library """
prefix = 'lib'
# Look for the shared library
sndfile_libs = self.get_libs('sndfile_libs', self.libname)
lib_dirs = self.get_lib_dirs()
for i in lib_dirs:
tmp = self.check_libs(i, sndfile_libs)
if tmp is not None:
info = tmp
break
#else:
# raise self.notfounderror()
# Look for the header file
include_dirs = self.get_include_dirs()
inc_dir = None
for d in include_dirs:
p = self.combine_paths(d,self.header)
if p:
inc_dir = os.path.dirname(p[0])
headername = os.path.abspath(p[0])
break
if inc_dir is not None and tmp is not None:
if sys.platform == 'win32':
# win32 case
fullname = prefix + tmp['libraries'][0] + \
'.dll'
elif sys.platform == 'darwin':
# Mac Os X case
fullname = prefix + tmp['libraries'][0] + '.' + \
str(SNDFILE_MAJ_VERSION) + '.dylib'
else:
# All others (Linux for sure; what about solaris) ?
fullname = prefix + tmp['libraries'][0] + '.so' + \
'.' + str(SNDFILE_MAJ_VERSION)
fullname = os.path.join(info['library_dirs'][0], fullname)
dict_append(info, include_dirs=[inc_dir],
fullheadloc = headername,
fulllibloc = fullname)
else:
return
#print self
self.set_info(**info)
return
"""
The problem is, the library I am using is distributed only as a dll,
not with the .lib. Right now, users of my package need to generate the
.lib by themselves from the dll, using visual studio compiler, which is
really too much (specially since the library itself is fine; using the
compiler is necessary only for distutils to find the library !).
cheers,
David
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