```bitbake
inherit pypi setuptools3
require python-cryptography.inc

SRC_URI += " \
    file://run-ptest \
"
```

Add -pthread to link flags
user
```bitbake
inherit pypi setuptools3
require python-cryptography.inc

LDSHARED += "-pthread"

SRC_URI += " \
    file://run-ptest \
"
```
assistant