Question

我正在尝试从https://github.com/TNG/boost-python-examples构建项目，这是Yosemite上的一组boost python示例。

首先我安装了Boost和Boost python和cmake

brew install boost
brew install boost-pyton
brew install cmake

我遇到了以下错误：

/usr/local/Cellar/cmake/3.0.2/bin/cmake -H/Users/demo/devel/boost-python-examples -B/Users/demo/devel/boost-python-examples/build --check-build-system CMakeFiles/Makefile.cmake 0
/usr/local/Cellar/cmake/3.0.2/bin/cmake -E cmake_progress_start /Users/demo/devel/boost-python-examples/build/CMakeFiles /Users/demo/devel/boost-python-examples/build/CMakeFiles/progress.marks
/Applications/Xcode.app/Contents/Developer/usr/bin/make -f CMakeFiles/Makefile2 all
/Applications/Xcode.app/Contents/Developer/usr/bin/make -f 01-HelloWorld/CMakeFiles/hello.dir/build.make 01-HelloWorld/CMakeFiles/hello.dir/depend
cd /Users/demo/devel/boost-python-examples/build && /usr/local/Cellar/cmake/3.0.2/bin/cmake -E cmake_depends "Unix Makefiles" /Users/demo/devel/boost-python-examples /Users/demo/devel/boost-python-examples/01-HelloWorld /Users/demo/devel/boost-python-examples/build /Users/demo/devel/boost-python-examples/build/01-HelloWorld /Users/demo/devel/boost-python-examples/build/01-HelloWorld/CMakeFiles/hello.dir/DependInfo.cmake --color=
/Applications/Xcode.app/Contents/Developer/usr/bin/make -f 01-HelloWorld/CMakeFiles/hello.dir/build.make 01-HelloWorld/CMakeFiles/hello.dir/build
Linking CXX shared module hello.so
cd /Users/demo/devel/boost-python-examples/build/01-HelloWorld && /usr/local/Cellar/cmake/3.0.2/bin/cmake -E cmake_link_script CMakeFiles/hello.dir/link.txt --verbose=1
/usr/bin/c++  -g -bundle -Wl,-headerpad_max_install_names   -o hello.so CMakeFiles/hello.dir/hello.cpp.o /usr/local/lib/libboost_python-mt.dylib
Undefined symbols for architecture x86_64:
  "_PyString_Type", referenced from:
      boost::python::to_python_value<char const* const&>::get_pytype() const in hello.cpp.o
  "__Py_NoneStruct", referenced from:
      boost::python::api::object::object() in hello.cpp.o
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]: *** [01-HelloWorld/hello.so] Error 1
make[1]: *** [01-HelloWorld/CMakeFiles/hello.dir/all] Error 2
make: *** [all] Error 2

看起来像是在呼唤：

/usr/bin/c++  -stdlib=libstdc++ -g -bundle -Wl,-headerpad_max_install_names   -o hello.so CMakeFiles/hello.dir/hello.cpp.o /usr/local/lib/libboost_python-mt.dylib

我尝试了以下内容：

删除-stdlib=libstdc++
使用gcc代替c++
使用-m32（糟糕的主意）

据我所知，dynlib很好： /usr/local/lib/libboost_python-mt.dylib: Mach-O 64-bit dynamically linked shared library x86_64

所以我不确定我目前的问题在哪里。我假设它有某种构建标志，我在这里失踪。

谢谢！

Answer 1

您还需要链接Python库。

在您的CMakeLists.txt中，您可以添加

include(FindPythonLibs)

这将定义一个变量PYTHON_LIBRARIES，您可以像这样使用

target_link_libraries(your_exe ${PYTHON_LIBRARIES ...)

Answer 2

尝试强制cmake使用正确的目录：

cmake -DBOOST_ROOT=xxx -DPYTHON_LIBRARY=xxx -DPYTHON_INCLUDE_DIR=xxx ..

在OSX 10.10上链接Boost Python

2 个答案: