How to check if a library is 32bit/64bit built on Mac OS X?
Solution 1
The file
tool can be used to identify executables.
Example:
> 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
Solution 2
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
or
lipo -info `which python`
Non-fat file: /usr/local/bin/python is architecture: x86_64
Don't use file
.
Solution 3
To find the available architectures in the Python instance you are using:
$ 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
To find whether the Python is currently running 32-bit or 64-bit (10.6 examples):
$ /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
For python3, substitute sys.maxsize
for sys.maxint
:
$ python3 -c "import sys;print('%x'%sys.maxsize)"
7fffffff
prosseek
A software engineer/programmer/researcher/professor who loves everything about software building. Programming Language: C/C++, D, Java/Groovy/Scala, C#, Objective-C, Python, Ruby, Lisp, Prolog, SQL, Smalltalk, Haskell, F#, OCaml, Erlang/Elixir, Forth, Rebol/Red Programming Tools and environments: Emacs, Eclipse, TextMate, JVM, .NET Programming Methodology: Refactoring, Design Patterns, Agile, eXtreme Computer Science: Algorithm, Compiler, Artificial Intelligence
Updated on June 17, 2022Comments
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prosseek about 2 years
I'm having some trouble in using PyQt/SIP. I guess the SIP is compiled into 64bit, but Python has some problem with finding it.
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
- How do I know if a library (so/dylib) is 32bit or 64bit?
- How do I know if my Python is 32bit or 64bit?