Question

我在使用PyQt / SIP方面遇到了一些麻烦。我想SIP被编译成64位，但Python在找到它时遇到了一些问题。

  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

我如何知道库（so / dylib）是32位还是64位？
我如何知道我的Python是32位还是64位？

Answer 1

file工具可用于识别可执行文件。

示例：

> 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

要在您正在使用的Python实例中查找可用的体系结构：

$ 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

要查找Python当前是运行32位还是64位（10.6示例）：

$ /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

对于python3，将sys.maxsize替换为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

或

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

请勿使用file。

如何检查库是否是在Mac OS X上构建的32位/ 64位？

3 个答案: