Method _calc_info

numpy/distutils/system_info.py:2323–2365

(self)

            return ''

    def _calc_info(self):
        c = customized_ccompiler()

        lib_dirs = self.get_lib_dirs()

        # Prefer to use libraries over openblas_libs
        opt = self.get_option_single('openblas_libs', 'libraries')
        openblas_libs = self.get_libs(opt, self._lib_names)

        info = self.check_libs(lib_dirs, openblas_libs, [])

        if c.compiler_type == "msvc" and info is None:
            from numpy.distutils.fcompiler import new_fcompiler
            f = new_fcompiler(c_compiler=c)
            if f and f.compiler_type == 'gnu95':
                # Try gfortran-compatible library files
                info = self.check_msvc_gfortran_libs(lib_dirs, openblas_libs)
                # Skip lapack check, we'd need build_ext to do it
                skip_symbol_check = True
        elif info:
            skip_symbol_check = False
            info['language'] = 'c'

        if info is None:
            return None

        # Add extra info for OpenBLAS
        extra_info = self.calc_extra_info()
        dict_append(info, **extra_info)

        if not (skip_symbol_check or self.check_symbols(info)):
            return None

        info['define_macros'] = [('HAVE_CBLAS', None)]
        if self.symbol_prefix:
            info['define_macros'] += [('BLAS_SYMBOL_PREFIX', self.symbol_prefix)]
        if self.symbol_suffix:
            info['define_macros'] += [
                    ('BLAS_SYMBOL_SUFFIX', self.symbol_suffix),
                    ('OPENBLAS_ILP64_NAMING_SCHEME', None),
            ]

        return info

    def calc_info(self):
        info = self._calc_info()