protobuf python找不到包含

Posted 2023-02-22

【中文标题】protobuf python找不到包含

【英文标题】：protobuf python can't find include

【发布时间】：2014-05-10 11:31:10

【问题描述】：

我注意到其他一些问题，我看到的唯一解决方案包括 CXXFLAGS 和 LDFLAGS，但这些似乎不起作用。

尝试为我在 CentOS 上使用 virtualenv 和用户帐户编译和安装的替代 Python 版本编译 C++ protobuff：

$ cd ~/myApp
$ /opt/python-2.7/bin/virtualenv python
$ source ~/myApp/python/bin/activate
(python)$ cd ~/src/protobuf-2.5.0
(python)$ ./configure --prefix=$HOME/usr
(python)$ make && make install

弹出一条消息说：

---

库已安装在： /home/myuser/usr/lib

如果您碰巧想链接已安装的库 在给定目录 LIBDIR 中，您必须使用 libtool，并且 指定库的完整路径名，或使用-LLIBDIR' flag during linking and do at least one of the following: - add LIBDIR to theLD_LIBRARY_PATH' 环境变量 在执行期间 - 将 LIBDIR 添加到 LD_RUN_PATH' environment variable during linking - use the-Wl,-rpath -Wl,LIBDIR' 链接器标志 - 让您的系统管理员将 LIBDIR 添加到 `/etc/ld.so.conf'

好的，继续：

(python)$ export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=cpp
(python)$ export CXXFLAGS=-I$HOME/usr/include
(python)$ export LDFLAGS=-L$HOME/usr/lib
(python)$ cd python
(python)$ python setup.py build

它退出了：

Using EXPERIMENTAL C++ Implmenetation.
running build
running build_py
running build_ext
building 'google.protobuf.internal._net_proto2___python' extension
gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I. -I/opt/python-2.7/include/python2.7 -c google/protobuf/pyext/python_descriptor.cc -o build/temp.linux-x86_64-2.7/google/protobuf/pyext/python_descriptor.o
cc1plus: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
In file included from google/protobuf/pyext/python_descriptor.cc:36:
./google/protobuf/pyext/python_descriptor.h:39:40: error: google/protobuf/descriptor.h: No such file or directory
google/protobuf/pyext/python_descriptor.cc:37:43: error: google/protobuf/descriptor.pb.h: No such file or directory
In file included from google/protobuf/pyext/python_descriptor.cc:36:
./google/protobuf/pyext/python_descriptor.h:55: error: ISO C++ forbids declaration of ‘FieldDescriptor’ with no type
./google/protobuf/pyext/python_descriptor.h:55: error: invalid use of ‘::’
./google/protobuf/pyext/python_descriptor.h:55: error: expected ‘;’ before ‘*’ token
./google/protobuf/pyext/python_descriptor.h:81: error: expected constructor, destructor, or type conversion before ‘*’ token
google/protobuf/pyext/python_descriptor.cc:48: error: expected initializer before ‘*’ token
google/protobuf/pyext/python_descriptor.cc:93: warning: deprecated conversion from string constant to ‘char*’
google/protobuf/pyext/python_descriptor.cc:93: warning: deprecated conversion from string constant to ‘char*’
google/protobuf/pyext/python_descriptor.cc:93: warning: deprecated conversion from string constant to ‘char*’
google/protobuf/pyext/python_descriptor.cc:93: warning: deprecated conversion from string constant to ‘char*’
google/protobuf/pyext/python_descriptor.cc:93: warning: deprecated conversion from string constant to ‘char*’
google/protobuf/pyext/python_descriptor.cc:152: error: ISO C++ forbids declaration of ‘DescriptorPool’ with no type
google/protobuf/pyext/python_descriptor.cc:152: error: invalid use of ‘::’
google/protobuf/pyext/python_descriptor.cc:152: error: expected ‘;’ before ‘*’ token
google/protobuf/pyext/python_descriptor.cc:158: error: expected unqualified-id before ‘*’ token
google/protobuf/pyext/python_descriptor.cc:158: error: expected ‘)’ before ‘*’ token
google/protobuf/pyext/python_descriptor.cc:158: error: expected initializer before ‘*’ token
google/protobuf/pyext/python_descriptor.cc:337: error: expected ‘’ at end of input
google/protobuf/pyext/python_descriptor.cc:337: error: expected ‘’ at end of input
google/protobuf/pyext/python_descriptor.cc:337: error: expected ‘’ at end of input
google/protobuf/pyext/python_descriptor.cc:155: warning: ‘void google::protobuf::python::CDescriptorPoolDealloc(google::protobuf::python::CDescriptorPool*)’ declared ‘static’ but never defined
error: command 'gcc' failed with exit status 1

【问题讨论】：

google/protobuf/descriptor.h在哪里？

(python)$ cd ~/;查找 ./ -iname descriptor.h ./usr/include/google/protobuf/descriptor.h ./src/protobuf-2.5.0/src/google/protobuf/descriptor.h (python)$

setuptools 似乎没有注意CXXFLAGS 环境变量——您可以看到您的CXXFLAGS 没有出现在gcc 命令行中。考虑到它使用的是gcc 而不是g++，它看起来甚至可能不知道它正在编译C++。 CFLAGS 有效吗？

谢谢 Kenton，这似乎可行，虽然我仍然无法让测试（'python setup.py test'）工作，但至少安装似乎工作；并且通过一两个示例，这似乎也有效。您会将此作为答案，以便我可以将其标记为已接受的答案，以便您获得适当的信用吗？

【参考方案1】：

setuptools 似乎没有注意CXXFLAGS 环境变量——您可以看到CXXFLAGS 没有出现在gcc 命令行中。考虑到它使用的是gcc 而不是g++，它看起来甚至可能不知道它正在编译C++。尝试改用CFLAGS。

【讨论】：

我在这个话题上唯一悬而未决的问题是为什么“python setup.py test”失败了。除此之外，您的解决方案似乎有效，谢谢。

@PinBot 没有日志很难说。可能是因为PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=cpp——它开启了一个实验性的实现，它有一些模糊的问题。