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='')
| 757 | } |
| 758 | |
| 759 | def architecture(executable=sys.executable, bits='', linkage=''): |
| 760 | |
| 761 | """ Queries the given executable (defaults to the Python interpreter |
| 762 | binary) for various architecture information. |
| 763 | |
| 764 | Returns a tuple (bits, linkage) which contains information about |
| 765 | the bit architecture and the linkage format used for the |
| 766 | executable. Both values are returned as strings. |
| 767 | |
| 768 | Values that cannot be determined are returned as given by the |
| 769 | parameter presets. If bits is given as '', the sizeof(pointer) |
| 770 | (or sizeof(long) on Python version < 1.5.2) is used as |
| 771 | indicator for the supported pointer size. |
| 772 | |
| 773 | The function relies on the system's "file" command to do the |
| 774 | actual work. This is available on most if not all Unix |
| 775 | platforms. On some non-Unix platforms where the "file" command |
| 776 | does not exist and the executable is set to the Python interpreter |
| 777 | binary defaults from _default_architecture are used. |
| 778 | |
| 779 | """ |
| 780 | # Use the sizeof(pointer) as default number of bits if nothing |
| 781 | # else is given as default. |
| 782 | if not bits: |
| 783 | import struct |
| 784 | size = struct.calcsize('P') |
| 785 | bits = str(size * 8) + 'bit' |
| 786 | |
| 787 | # Get data from the 'file' system command |
| 788 | if executable: |
| 789 | fileout = _syscmd_file(executable, '') |
| 790 | else: |
| 791 | fileout = '' |
| 792 | |
| 793 | if not fileout and \ |
| 794 | executable == sys.executable: |
| 795 | # "file" command did not return anything; we'll try to provide |
| 796 | # some sensible defaults then... |
| 797 | if sys.platform in _default_architecture: |
| 798 | b, l = _default_architecture[sys.platform] |
| 799 | if b: |
| 800 | bits = b |
| 801 | if l: |
| 802 | linkage = l |
| 803 | return bits, linkage |
| 804 | |
| 805 | if 'executable' not in fileout and 'shared object' not in fileout: |
| 806 | # Format not supported |
| 807 | return bits, linkage |
| 808 | |
| 809 | # Bits |
| 810 | if '32-bit' in fileout: |
| 811 | bits = '32bit' |
| 812 | elif '64-bit' in fileout: |
| 813 | bits = '64bit' |
| 814 | |
| 815 | # Linkage |
| 816 | if 'ELF' in fileout: |
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