File “detection.py”, line 52, in face_detection cpp = ctypes.CDLL(’./detector.so’) File “/usr/lib/python3.8/ctypes/init.py”, line 373, ininit self._handle = _dlopen(self._name, mode) OSError: ./detector.so: undefined symbol: __powf_finite 这是由于未定义__powf_finite引起的...
(print_info is just for testing that ctypes works) /* hash.c: hash table with linear probing */ #include <stdio.h> #include <stdlib.h> typedef struct { void *key; void *value; } ht_entry; typedef struct { ht_entry *table; int len; int num_entries; int (*hash_fn)(void *k...
I have not yet been successful. For starters I have written a Hello World program in C++ and I am trying to call it from Python using ctypes. This is what I have done:
* 防止出现错误undefined symbol:若使用了C++头文件iostream,所以加上链接库选项 -lstdc++,若使用了其它头文件,也要链接相关度库,若未使用,则不必添加 ——gcc链接库的问题 Python: importctypes so= ctypes.CDLL('./exp.so')print(so.get_word(4)) 脚本将在终端打印 5。 示例代码中的参数传递有两种方式,1...
lib=ctypes.CDLL('./libexample.so')lib.undefined_function()# 这个函数未定义,会抛出undefined symbol错误 1. 2. 3. 4. 5. // example.c#include<stdio.h>voiddefined_function(){printf("This function is defined.\n");} 1. 2. 3.
python python_ctypes.py就会报以下错误 AttributeError:./libtest.so: undefined symbol:add 经过查阅,发现c++的编译后,为了实现重载,函数名会被改变,这时候要使用使用c的方式进行编译,编译后的文件中仍然是定义的函数名。有两种方式解决这个问题 将文件后缀改为.c,然后利用gcc生成动态库 ...
python : File "/home/tdynamos/Kodvaan/.buildozer/android/platform/build-arm64-v8a/build/other_builds/python3/arm64-v8a__ndk_target_21/python3/Lib/ctypes/__init__.py", line 392, in __getitem__ 06-21 09:09:53.476 5591 5636 I python : AttributeError: undefined symbol: PyCapsule_New...
首先了解到:(1)对于python,ctypes只能load动态库; (2)静态库可以被动态库链接,而后给python调用,但是静态库在编译过程中没有加–fPIC参数,就不可以被动态库链接; (3)我的C++代码调用了NTL库和GMP库(这两个也是c++库),但是这两个库的静态库libntl.a和libgmpxx.a, libgmp.a在编译时都没用–fPIC参数编译,所...
line 378, in __getattr__ func = self.__getitem__(name) File "/glade/apps/opt/python/2.7.7/gnu-westmere/4.8.2/lib/python2.7/ctypes/__init__.py", line 383, in __getitem__ func = self._FuncPtr((name_or_ordinal, self)) AttributeError: python: undefined symbol: Error_GetLastErrorNu...
_dlltype(name) File "/usr/lib/python2.5/ctypes/__init__.py", line 348, in __init__ self._handle = _dlopen(self._name, mode) OSError: path-to-my-lib/libwav.so: undefined symbol: ODBCGeneralQuery 似乎LD_LIBRARY_PATH 在这里没有作用。有没有办法让这些依赖库“可加载”? 先谢谢您...