Unable to find Protobuf include directory during install mysql-connector over pip

问题:

I pulled mysql-connector-python code and when I run python ./setup.py build I get the following error:

Unable to find Protobuf include directory. 

pip install Protobuf was useless

How can I solve this problem?

回答1:

I found that this error occurs since version 2.2.3. You can avoid this issue using version 2.1.6.

pip install mysql-connector==2.1.6

try above.

回答2:

As of 2.2.3, Connector/Python uses a C++ extension that interfaces with a MySQL server with the X plugin enabled, using Protobuf as data interchange format.

So, you need to set up where Protobuf is installed on your system (the library, include and protoc binary paths).

Requirements

• A C/C++ compiler, such as gcc
• Protobuf C++ (version >= 2.6.0)
• Python development files

Installation

You have two options when using pip + pypi:

1) Set environment variables for MYSQLXPB_PROTOBUF_INCLUDE_DIR, MYSQLXPB_PROTOBUF_LIB_DIR and MYSQLXPB_PROTOC.

2) Add --install-option to set these options when using pip:

shell> python install mysql-connector --install-option='--with-protobuf-include-dir=' --install-option='--with-protobuf-lib-dir=' --install-option='--with-protoc=' 

Important: Keep in mind that 2.2.3 is a development release.

回答3:

I also have this issue on my Ubuntu 16.04 and finally can install mysql-connector 2.2.3 with the following steps:

1. Install these packages via the Ubuntu package manager:

   sudo apt install libprotobuf-dev protobuf-compiler 

2. Set these environment variables:

   export MYSQLXPB_PROTOC=/usr/bin/protoc export MYSQLXPB_PROTOBUF_INCLUDE_DIR=/usr/include/google/protobuf export MYSQLXPB_PROTOBUF_LIB_DIR=/usr/lib/x86_64-linux-gnu 

3. Install the mysql-connector package via the Python package manager:

   pip install mysql-connector 

Hope this helps.

回答4:

For some reason I noticed that pip install mysql-connector tried to install v2.2.3, which we don't want. Therefore, I specifically entered pip install mysql-connector==2.1.6 and it installed without error. Please note too that I am using a virtualenv running python 3.6.1. I installed it there. Here is documentation on installing specific python modules that helped me. https://docs.python.org/3/installing/index.html

回答5:

I am on WIN 7 64-bit, python 27. This command works for me and seems most appropriate, particularly when v2.2.3 is a development version.

pip install mysql-connector==2.1.4 

回答6:

To install protobuf with mac ports, I did the following

Installing protobuf:

port install protobuf-cpp

Declare where is protobuf

export MYSQLXPB_PROTOBUF_LIB_DIR=/opt/local/lib export MYSQLXPB_PROTOC=/opt/local/bin/protoc export MYSQLXPB_PROTOBUF_INCLUDE_DIR=/opt/local/include

Installing the connector

pip install mysql-connector

回答7:

Please know that 2.1.6 Connector fails with NoneType error when connecting to Django 1.11. Fixed in 2.1.7.

Read: mysql-connector-python fails to work with django 1.11.

回答8:

On macOS, if you use Homebrew:

$ brew install protobuf $ export MYSQLXPB_PROTOC=/usr/local/opt/protobuf/bin/protoc $ export MYSQLXPB_PROTOBUF_INCLUDE_DIR=/usr/local/opt/protobuf/include/ $ export MYSQLXPB_PROTOBUF_LIB_DIR=/usr/local/opt/protobuf/lib/ $ pip3 install mysql-connector 

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