Queries the given executable (defaults to the Python interpreter binary) for various architecture information. Returns a tuple (bits, linkage) which contains information about the bit architecture and the linkage format used for the executable. Both values are retur
(executable=sys.executable, bits='', linkage='')
| 712 | }) |
| 713 | |
| 714 | def architecture(executable=sys.executable, bits='', linkage=''): |
| 715 | |
| 716 | """ Queries the given executable (defaults to the Python interpreter |
| 717 | binary) for various architecture information. |
| 718 | |
| 719 | Returns a tuple (bits, linkage) which contains information about |
| 720 | the bit architecture and the linkage format used for the |
| 721 | executable. Both values are returned as strings. |
| 722 | |
| 723 | Values that cannot be determined are returned as given by the |
| 724 | parameter presets. If bits is given as '', the sizeof(pointer) |
| 725 | (or sizeof(long) on Python version < 1.5.2) is used as |
| 726 | indicator for the supported pointer size. |
| 727 | |
| 728 | The function relies on the system's "file" command to do the |
| 729 | actual work. This is available on most if not all Unix |
| 730 | platforms. On some non-Unix platforms where the "file" command |
| 731 | does not exist and the executable is set to the Python interpreter |
| 732 | binary defaults from _default_architecture are used. |
| 733 | |
| 734 | """ |
| 735 | # Use the sizeof(pointer) as default number of bits if nothing |
| 736 | # else is given as default. |
| 737 | if not bits: |
| 738 | import struct |
| 739 | size = struct.calcsize('P') |
| 740 | bits = str(size * 8) + 'bit' |
| 741 | |
| 742 | # Get data from the 'file' system command |
| 743 | if executable: |
| 744 | fileout = _syscmd_file(executable, '') |
| 745 | else: |
| 746 | fileout = '' |
| 747 | |
| 748 | if not fileout and \ |
| 749 | executable == sys.executable: |
| 750 | # "file" command did not return anything; we'll try to provide |
| 751 | # some sensible defaults then... |
| 752 | if sys.platform in _default_architecture: |
| 753 | b, l = _default_architecture[sys.platform] |
| 754 | if b: |
| 755 | bits = b |
| 756 | if l: |
| 757 | linkage = l |
| 758 | return bits, linkage |
| 759 | |
| 760 | if 'executable' not in fileout and 'shared object' not in fileout: |
| 761 | # Format not supported |
| 762 | return bits, linkage |
| 763 | |
| 764 | # Bits |
| 765 | if '32-bit' in fileout: |
| 766 | bits = '32bit' |
| 767 | elif '64-bit' in fileout: |
| 768 | bits = '64bit' |
| 769 | |
| 770 | # Linkage |
| 771 | if 'ELF' in fileout: |
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