1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
import ctypes
import os
from os.path import dirname, join, exists
from shutil import which
from libghdl.version import __version__
def _get_libghdl_name():
"""Get the name of the libghdl library (with version and extension)"""
ver = __version__.replace('-', '_').replace('.', '_')
ext = {'win32': 'dll',
'cygwin': 'dll',
'darwin': 'dylib'}.get(os.name, 'so')
return 'libghdl-' + ver + '.' + ext
def _check_libghdl_libdir(libdir, basename):
"""Return libghdl path in :param libdir" if found or None"""
if libdir is None:
return None
# print('libghdl: check in {}'.format(libdir))
res = join(libdir, basename)
if exists(res):
return res
return None
def _check_libghdl_bindir(bindir, basename):
if bindir is None:
return None
return _check_libghdl_libdir(join(bindir, '..', 'lib'), basename)
def _get_libghdl_path():
"""Locate the directory where the shared library is"""
basename = _get_libghdl_name()
# Try VUNIT_GHDL_PATH (path of the ghdl binary when using VUnit).
r = _check_libghdl_bindir (os.environ.get('VUNIT_GHDL_PATH'), basename)
if r is not None:
return r
# Try GHDL (name/path of the ghdl binary)
r = os.environ.get('GHDL', 'ghdl')
r = which(r)
if r is not None:
r = _check_libghdl_bindir(dirname(r), basename)
if r is not None:
return r
# Try within libghdl/ python installation
r = __file__
r = _check_libghdl_bindir(dirname(r), basename)
if r is not None:
return r
# Try when running from the build directory
r = join(dirname(__file__), '..', '..', 'lib')
r = _check_libghdl_libdir(r, basename)
if r is not None:
return r
# Failed.
raise Exception('Cannot find libghdl {}'.format(basename))
# Load the shared library
_libghdl_path = _get_libghdl_path()
libghdl = ctypes.CDLL(_libghdl_path)
# Initialize it.
libghdl.libghdl_init()
def _to_char_p(arg):
return ctypes.c_char_p(arg), len(arg)
def set_option(opt):
return libghdl.libghdl__set_option(*_to_char_p(opt))
def analyze_init():
return libghdl.libghdl__analyze_init()
def analyze_file(fname):
return libghdl.libghdl__analyze_file(*_to_char_p(fname))
if False:
_prefix = os.environ.get("LIBGHDL_PREFIX") or '--PREFIX=%s' % join(dirname(_libghdl_path), 'ghdl')
# print('ghdl prefix: {}'.format(_prefix))
set_option(_prefix.encode('utf-8'))
|
