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import ctypes
from os import environ
from os.path import dirname, join
from shutil import which
from libghdl.config import __libghdl__
def _to_char_p(arg):
return ctypes.c_char_p(arg), len(arg)
def get_ghdl_path():
_dir = None
for envvar in [environ.get(item) for item in ['GHDL_BIN_PATH', 'VUNIT_GHDL_PATH']]:
if envvar:
_dir = envvar
break
if not _dir:
_dir = which(environ.get('GHDL', 'ghdl'))
if _dir:
_dir = join(dirname(_dir), '..', 'lib')
return _dir
_basedir = get_ghdl_path() or dirname(__file__)
libghdl = ctypes.CDLL(join(_basedir, __libghdl__))
libghdl.libghdl_init()
def set_option(opt):
arg = _to_char_p(opt)
return libghdl.libghdl__set_option(arg[0], arg[1])
def analyze_init():
return libghdl.libghdl__analyze_init()
def analyze_file(fname):
arg = _to_char_p(fname)
return libghdl.libghdl__analyze_file(arg[0], arg[1])
_prefix = environ.get("LIBGHDL_PREFIX") or '--PREFIX=%s' % join(_basedir, 'ghdl')
set_option(_prefix.encode('utf-8'))
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