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.. SPDX-License-Identifier: CC-BY-2.5
=================
Library Functions
=================
|
This chapter lists common library functions available under the ``lib/``
directory in BitBake.
These functions can be used in recipes or configuration files with
:ref:`inline-Python <bitbake-user-manual/bitbake-user-manual-metadata:Inline
Python Variable Expansion>` or :ref:`Python
<bitbake-user-manual/bitbake-user-manual-metadata:BitBake-Style Python
Functions>` functions.
Logging utilities
=================
Different logging utilities can be used from Python code in recipes or
configuration files.
The strings passed below can be formatted with ``str.format()``, for example::
bb.warn("Houston, we have a %s", "bit of a problem")
Formatted string can also be used directly::
bb.error("%s, we have a %s" % ("Houston", "big problem"))
Python f-strings may also be used::
h = "Houston"
bb.fatal(f"{h}, we have a critical problem")
.. automodule:: bb
:members:
debug,
error,
erroronce,
fatal,
note,
plain,
verbnote,
warn,
warnonce,
``bb.utils``
============
.. automodule:: bb.utils
:members:
:exclude-members:
LogCatcher,
PrCtlError,
VersionStringException,
better_compile,
better_exec,
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