我正在浏览Cython文档并构建每个示例应用程序。我有点卡在使用C库。成功构建.so文件并尝试将其导入名为test.py的python文件后,会引发以下错误。导入Cython生成的.so文件时,导入错误的含义是什么?
$ python3.2 test.py
Traceback (most recent call last):
File "test.py", line 12, in <module>
from queue import Queue
ImportError: dlopen(/Users/jeremy/Development/labs/python/cython_lib_wrapper/queue.so, 2): Symbol not found: _queue_free
Referenced from: /Users/jeremy/Development/labs/python/cython_lib_wrapper/queue.so
Expected in: flat namespace
in /Users/jeremy/Development/labs/python/cython_lib_wrapper/queue.so
.so文件紧挨着test.py文件。所以,好像应该找到它。 这是运行最新版本的Cython,在OSX 10.6上运行Python 3.2。
任何见解?
编辑 - 添加建立命令和输出
$ python3.2 setup.py build_ext --inplace
running build_ext
cythoning queue.pyx to queue.c
building 'queue' extension
gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -isysroot /Developer/SDKs/MacOSX10.6.sdk -arch i386 -arch x86_64 -isysroot /Developer/SDKs/MacOSX10.6.sdk -I/Library/Frameworks/Python.framework/Versions/3.2/include/python3.2m -c queue.c -o build/temp.macosx-10.6-intel-3.2/queue.o
queue.c: In function ‘__pyx_f_5queue_5Queue_append’:
queue.c:627: warning: cast to pointer from integer of different size
queue.c: In function ‘__pyx_f_5queue_5Queue_extend’:
queue.c:740: warning: cast to pointer from integer of different size
queue.c: In function ‘__pyx_f_5queue_5Queue_peek’:
queue.c:813: warning: cast from pointer to integer of different size
queue.c: In function ‘__pyx_f_5queue_5Queue_pop’:
queue.c:965: warning: cast from pointer to integer of different size
gcc-4.2 -bundle -undefined dynamic_lookup -arch i386 -arch x86_64 -isysroot /Developer/SDKs/MacOSX10.6.sdk -isysroot /Developer/SDKs/MacOSX10.6.sdk -g build/temp.macosx-10.6-intel-3.2/queue.o -o
编辑2 - 加入 “otool” CMD请求在评论
queue.so:
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.0)
编辑3 - 加入 “nm” 是输出
U ___stack_chk_fail
U ___stack_chk_guard
U _queue_free
U _queue_is_empty
U _queue_new
U _queue_peek_head
U _queue_pop_head
U _queue_push_tail
U dyld_stub_binder
个
的grep CMD输出这样的:
(undefined) external _queue_free (dynamically looked up)
这似乎是一个链接问题。你能重建并包含构建输出和用于构建的命令吗? – stderr
@Mike Steder感谢您看到这个,我添加了构建命令并输出 – JeremyFromEarth
好吧,没有太多的运气再现,所以让我们尝试更多的调试。尝试'nm queue.so'并查看_queue_free旁边列出的内容。还可以使用'otool -L queue.so'并检查以查看DYLD_LIBRARY_PATH('echo $ DYLD_LIBRARY_PATH')。 – stderr