[PATCH v3 0/2] Don't create Python bytecode when building the kernel

Mauro Carvalho Chehab
2025-04-16T07:51:39Z

As reported by Andy, the Kernel build system runs kernel-doc script for DRM,
when W=1. Due to Python's normal behavior, its JIT compiler will create
a bytecode and store it under scripts/lib/*/__pycache__.

As one may be using O= and even having the sources on a read-only mount
point, disable its creation during build time.

This only solves half of the issue though, as one may be manually running
the script by hand, without asking Python to not store any bytecode.
This should be OK, but afterwards, git status will list the __pycache__ as
not committed. To prevent that, add *.pyc to .gitignore.

---

v3:
- changed the order of PYTHONDONTBYTECODE;
- patched also scripts/Makefile

Mauro Carvalho Chehab (2):
scripts/kernel-doc.py: don't create *.pyc files
.gitignore: ignore Python compiled bytecode

.gitignore | 1 +
drivers/gpu/drm/Makefile | 2 +-
drivers/gpu/drm/i915/Makefile | 2 +-
include/drm/Makefile | 2 +-
scripts/Makefile.build | 2 +-
scripts/find-unused-docs.sh | 2 +-
6 files changed, 6 insertions(+), 5 deletions(-)

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2.49.0