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<div class="moz-cite-prefix">On 08/09/2018 05:10 AM, 刘菲 wrote:<br>
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<div><span style="font-family: 微软雅黑, Verdana, 'Microsoft
Yahei', SimSun, sans-serif; line-height: 1.6;">hi, the
problem occurs when I link to crypto
Since mysqlclient update to the version"</span></div>
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<td style="word-break: break-all;" valign="top"><a class="moz-txt-link-freetext" href="http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/">http://security.ubuntu.com/ubuntu/pool/main/m/mysql-5.7/</a></td>
<td style="word-break: break-all;"><a
href="https://urldefense.proofpoint.com/v2/url?u=http-3A__security.ubuntu.com_ubuntu_pool_main_m_mysql-2D5.7_libmysqlclient-2Ddev-5F5.7.23-2D0ubuntu0.18.04.1-5Famd64.deb&d=DwMGaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=M-8dedO8w3Vlx9Nb3v_HN_eQTPKU36yJj5mmQmreYMQ&m=9js77s89BD_w2pEpZdfUz3JQjchLQ65oUfLPJGNzXRs&s=00hIiuCwTLEhykigi7l78zldBDVRNBS2LjgpV33MlQs&e="
moz-do-not-send="true">libmysqlclient-dev_5.7.23-0ubuntu0.18.04.1_amd64.deb</a>"</td>
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<div style="font-family: 微软雅黑, Verdana, 'Microsoft Yahei',
SimSun, sans-serif; font-size: 14px; line-height: 1.6;">The
detail is below:</div>
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<p style="font-family: 微软雅黑, Verdana, 'Microsoft Yahei',
SimSun, sans-serif; font-size: 14px; line-height: 1.6;">There
is something wrong with multiple definition of
`ERR_remove_thread_state' When I compile a c++ server and
link openssl-1.0.2 libcrypto.a and libmysqlclient.a.Here
is the error:</p>
<pre style="font-family: 微软雅黑, Verdana, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 1.6;"><code>/usr/local/openssl-1.0.2/lib/libcrypto.a(err.o): In function `ERR_remove_thread_state':
err.c:(.text+0x1ac0): multiple definition of `ERR_remove_thread_state'
/usr/lib/x86_64-linux-gnu/libmysqlclient.a(ssl.cpp.o):(.text+0x1df0): first defined here
</code></pre>
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<div id="ntes-pcmail-signature-default" style="">I try
to resolve the problem by manual update crypto . but
after "apt-get install libcrypto-dev", cannot update
to the latest version<span style="line-height:
22.4px;">"libcrypto++-dev_5.6.4-8_amd64.deb"</span><span
style="line-height: 1.6;">(only can update to "</span><span
style="line-height: 22.4px;">libcrypto++-dev_5.6.1-9_amd64.deb"). </span></div>
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style="line-height: 22.4px;"><br>
</span></div>
<div id="ntes-pcmail-signature-default" style=""><span
style="line-height: 22.4px;">how to resolve the
problem? I have no idea, please take a look for
me.</span></div>
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Hi,<br>
<br>
I'll take a look and see if I can reproduce, but a couple of extra
questions:<br>
* Did this work with 5.7.22? MySQL 5.7 links yaSSL statically, and
mixing this with your own link to openssl would always have a big
chance of causing issues, but version updates to yaSSL or OpenSSL
could have triggered the actual error.<br>
* Have you tested the build without linking to openssl (this would
mean you get all ssl functionality through libmysqlclient and
yassl)?<br>
<br>
Also note that if it is an option for you, MySQL 8.0 uses dynamic
linking with OpenSSL, so this would no longer be a problem.<br>
<br>
--<br>
Lars<br>
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<div id="ntes-pcmail-signature-default">Thank you very
much.</div>
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