xcode “架构 x86_64 的未定义符号：”
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"Undefined symbols for architecture x86_64:"
提问by h4x0rjax
I am attempting to compile this library on mac os x Mavericks 10.9.3 64-bit: http://www.openfec.org/downloads.html
我正在尝试在 mac os x Mavericks 10.9.3 64 位上编译这个库：http: //www.openfec.org/downloads.html
I followed the README exactly, and got this error:
我完全按照自述文件进行操作，并收到此错误：
Linking C shared library ../../bin/Release/libopenfec.dylib
Undefined symbols for architecture x86_64: "_of_add_from_multiple_symbols", referenced from: _of_linear_binary_code_backward_substitution in of_ml_tool.c.o "_of_add_to_symbol", referenced from: _of_linear_binary_code_decode_with_new_symbol in of_it_decoding.c.o _of_linear_binary_code_simplify_linear_system in of_ml_decoding.c.o _of_linear_binary_code_col_forward_elimination_pivot_reordering in of_ml_tool.c.o _of_linear_binary_code_apply_gauss_pivoting in of_ml_tool_2.c.o _of_linear_binary_code_inject_symbol_in_triangular_system in of_ml_tool_2.c.o _of_linear_binary_code_solve_triangular_system in of_ml_tool_2.c.o _of_linear_binary_code_invert_dense_system in of_ml_tool_2.c.o ... "_of_calloc", referenced from...: ...ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: * [../bin/Release/libopenfec.dylib] Error 1
make[1]: *[src/CMakeFiles/openfec.dir/all] Error 2
make: *** [all] Error 2
链接 C 共享库 ../../bin/Release/libopenfec.dylib
Undefined symbols for architecture x86_64: "_of_add_from_multiple_symbols", referenced from: _of_linear_binary_code_backward_substitution in of_ml_tool.c.o "_of_add_to_symbol", referenced from: _of_linear_binary_code_decode_with_new_symbol in of_it_decoding.c.o _of_linear_binary_code_simplify_linear_system in of_ml_decoding.c.o _of_linear_binary_code_col_forward_elimination_pivot_reordering in of_ml_tool.c.o _of_linear_binary_code_apply_gauss_pivoting in of_ml_tool_2.c.o _of_linear_binary_code_inject_symbol_in_triangular_system in of_ml_tool_2.c.o _of_linear_binary_code_solve_triangular_system in of_ml_tool_2.c.o _of_linear_binary_code_invert_dense_system in of_ml_tool_2.c.o ... "_of_calloc", referenced from...: ...ld：找不到架构 x86_64 的符号
clang：错误：链接器命令失败，退出代码 1（使用 -v 查看调用）
make[2]：* [../bin/Release/libopenfec.dylib] 错误 1
make[1]: *[src/CMakeFiles/openfec.dir/all] 错误 2
make: *** [all] 错误 2
I simply followed the README for OpenFEC's distro (found at http://www.openfec.org/downloads.html). When attempting to make, this error arises. I have no idea what the problem is.
我只是遵循 OpenFEC 发行版的自述文件（可在http://www.openfec.org/downloads.html找到）。尝试制作时，会出现此错误。我不知道问题是什么。
This is what I did after untarring the distribution:
(1.): mkdir build
(2.): cd build
(3.): cmake .. -DDEBUG:STRING=OFF
(4.): make
这是我解压发行版后所做的：
(1.): mkdir build
(2.): cd build
(3.): cmake .. -DDEBUG:STRING=OFF
(4.): make
Any ideas?
有任何想法吗？
Edit: Attempted to force cmake to use 64-bit, still didn't work.
(Tried to force it into 32-bit just for kicks, also didn't work)
编辑：试图强制 cmake 使用 64 位，仍然没有用。
（试图将其强制为 32 位只是为了踢，也没有用）
回答by zcourts
FYI, if this wasn't resolved. Check that you're linking to your libraries properly.
仅供参考，如果这没有解决。检查您是否正确链接到您的库。
FIND_LIBRARY(LIB_NAME_LIB lib)
TARGET_LINK_LIBRARIES(my_executable ${LIB_NAME_LIB})
In your CMakeLists.txt file.
在您的 CMakeLists.txt 文件中。
