¿Cómo comprobar si una biblioteca es de 32 bits/64 bits integrada en Mac OS X?

Question

Tengo algunos problemas al usar PyQt/SIP.Supongo que el SIP está compilado en 64 bits, pero Python tiene algún problema para encontrarlo.

  File "qtdemo.py", line 46, in 
    import sip
ImportError: dlopen(/Library/Python/2.6/site-packages/sip.so, 2): no suitable image found.  Did find:
        /Library/Python/2.6/site-packages/sip.so: mach-o, but wrong architecture

• ¿Cómo sé si una biblioteca (so/dylib) es de 32 bits o de 64 bits?
• ¿Cómo sé si mi Python es de 32 bits o de 64 bits?

Answer 1

El file La herramienta se puede utilizar para identificar ejecutables.

Ejemplo:

> file /Applications/TextEdit.app/Contents/MacOS/TextEdit 
/Applications/TextEdit.app/Contents/MacOS/TextEdit: Mach-O universal binary with 2 architectures
/Applications/TextEdit.app/Contents/MacOS/TextEdit (for architecture x86_64):   Mach-O 64-bit executable x86_64
/Applications/TextEdit.app/Contents/MacOS/TextEdit (for architecture i386): Mach-O executable i386

Answer 2

Para encontrar las arquitecturas disponibles en la instancia de Python que está utilizando:

$ file "$( "$(which python)" -c "import sys;print(sys.executable)" )"
/usr/bin/python: Mach-O universal binary with 3 architectures
/usr/bin/python (for architecture x86_64):  Mach-O 64-bit executable x86_64
/usr/bin/python (for architecture i386):    Mach-O executable i386
/usr/bin/python (for architecture ppc7400): Mach-O executable ppc

Para saber si Python se ejecuta actualmente en 32 o 64 bits (10.6 ejemplos):

$ /usr/bin/python2.6 -c "import sys;print('%x'%sys.maxint)"
7fffffffffffffff
$ arch -x86_64 /usr/bin/python2.6 -c "import sys;print('%x'%sys.maxint)"
7fffffffffffffff
$ arch -i386 /usr/bin/python2.6 -c "import sys;print('%x'%sys.maxint)"
7fffffff
$ arch -ppc /usr/bin/python2.6 -c "import sys;print('%x'%sys.maxint)"
7fffffff

Para python3, sustituya sys.maxsize para sys.maxint:

$ python3 -c "import sys;print('%x'%sys.maxsize)"
7fffffff

Answer 3

lipo -info target/libexample-df07142d9bfd950a.a
input file target/libexample-df07142d9bfd950a.a is not a fat file
Non-fat file: target/libexample-df07142d9bfd950a.a is architecture: x86_64

o

lipo -info `which python`
Non-fat file: /usr/local/bin/python is architecture: x86_64

No use file.