<p>On the minheadless VM that is built using cmake, the add_vm_plugin_sources cmake macro requires specifying the the plugin sources explicitly, which is omitting the src/plugins/SqueakSSL/SqueakSSL.c in the compilation of the plugin. By using the other macro (add_vm_plugin_auto), the platform specific files are automatically found with a glob pattern. This is a mistake that I introduced myself. This problem can be reproduced in Pharo using the minheadless vm of this repository on OS X with the following script:</p>
<p>´´´smalltalk<br>
url := '<a href="https://google.com" rel="nofollow">https://google.com</a>' asZnUrl.<br>
ZnClient new<br>
url: url;<br>
get;<br>
response<br>
´´´</p>
<p>CI errors on travis are not related to this PR.</p>

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