ubuntu 18.04 pip3 install mysqlclient

不知道是阿里云的问题还是ubuntu本身的问题，今天安装mysqlclient提示：

/usr/bin/ld: cannot find -lssl

/usr/bin/ld: cannot find -lcrypto

collect2: error: ld returned 1 exit status

error: command ‘x86_64-linux-gnu-gcc’ failed with exit status 1

网上搜了一下没有发现类似的错误信息，于是转换思路直接搜索: /usr/bin/ld: cannot find -lssl 在这篇文章看到了解决方案：

https://blog.51cto.com/eminzhang/1285705

按照错误信息，直接尝试安装libssl：

apt install libssl-dev

Reading package lists… Done

Building dependency tree

Reading state information… Done

Suggested packages:

libssl-doc

The following NEW packages will be installed:

libssl-dev

0 upgraded, 1 newly installed, 0 to remove and 6 not upgraded.

Need to get 1,566 kB of archives.

After this operation, 7,846 kB of additional disk space will be used.

Get:1 http://mirrors.cloud.aliyuncs.com/ubuntu bionic-updates/main amd64 libssl-dev amd64 1.1.1-1ubuntu2.1~18.04.5 1,566 kB

Fetched 1,566 kB in 0s (30.7 MB/s)

Selecting previously unselected package libssl-dev:amd64.

(Reading database … 113385 files and directories currently installed.)

Preparing to unpack …/libssl-dev_1.1.1-1ubuntu2.1~18.04.5_amd64.deb …

Unpacking libssl-dev:amd64 (1.1.1-1ubuntu2.1~18.04.5) …

Setting up libssl-dev:amd64 (1.1.1-1ubuntu2.1~18.04.5) …

安装成功后，如果继续尝试安装libcrypto-dev，就会直接报错了，因为没有这个库：

Reading package lists… Done

Building dependency tree

Reading state information… Done

E: Unable to locate package libcrypto-dev

虽然报错，但是此时重新安装mysqlclient就成功了：

root@iZbp14eg6x181fumvost8tZ:/var/www/html# pip install mysqlclient

Looking in indexes: http://mirrors.cloud.aliyuncs.com/pypi/simple/

Collecting mysqlclient

Downloading http://mirrors.cloud.aliyuncs.com/pypi/packages/d0/97/7326248ac8d5049968bf4ec708a5d3d4806e412a42e74160d7f266a3e03a/mysqlclient-1.4.6.tar.gz (85kB)

100% |████████████████████████████████| 92kB 36.2MB/s

Building wheels for collected packages: mysqlclient

Running setup.py bdist_wheel for mysqlclient … done

Stored in directory: /root/.cache/pip/wheels/76/e8/97/ee5bddf8f9ef442b375f511cd0507060b8498c02f5086168f2

Successfully built mysqlclient

Installing collected packages: mysqlclient

Successfully installed mysqlclient-1.4.6

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