[Buildroot] [PATCH v4 00/18] Reproducible builds
Jérôme Pouiller
jezz at sysmic.org
Wed Nov 23 12:58:39 UTC 2016
This series try to continue work initiated by Gilles Chanteperdrix:
http://lists.busybox.net/pipermail/buildroot/2016-April/thread.html#160064
http://lists.busybox.net/pipermail/buildroot/2016-June/thread.html#163905
I dropped some patchs from original series because either:
- I handled things differently (timestamps in images, support SOURCE_DATE_EPOCH
in gcc, ...)
- I didn't had time to test them them (sysroot, cpio, cdrkit, iso9660,...)
- They doesn't seems necessary anymore (libtool, libgcrypt, libgpg-error, ...)
This version focuses on timestamps. It provide good enough results as soon as
OUTDIR and TOPDIR are the same. Indeed build path appear in plenty of files.
Only patch called "remove full path from .pyc" try to solve this issue. Another
big step could be done by removing rpaths from ELF generated with libtool.
Other thing known to break reproducibility:
- use of lzop (it unconditionally include timestamps in result)
- /!\ since we build our own toolchain and toolchain include BR2_FULL_VERSION,
ccache is incompatible with reproducible
Since this feature is experimental I did not (yet) reported these
incompatibilities in menuconfig.
Gilles Chanteperdrix (3):
reproducibility: generate SOURCE_DATE_EPOCH
reproducibility/linux: override build timestamp
reproducibility/busybox: disable build timestamps
Jérôme Pouiller (15):
reproducible: fix DATE/TIME macros in toolchain-wrapper
reproducible: add '-n' to gzip invocations
fs/tar: make results reproducible
reproducibility/linux: inhibit build-id
reproducible: lock modification times in $TARGET_DIR
fakedate: new package
core: do not reset DEPENDENCIES_HOST_PREREQ in dependencies.mk
reproducible: enable fakedate
pycompile: allow to force compilation
python2: generate reproducible .pyc
python3: generate reproducible .pyc
python2: remove full path from .pyc
python3: remove full path from .pyc
reproducible: improve help text
reproducible: fix coding style
Config.in | 6 +++
Makefile | 12 ++++--
fs/common.mk | 3 ++
fs/tar/tar.mk | 3 +-
linux/linux.mk | 15 ++++++++
package/busybox/busybox.mk | 6 +++
package/fakedate/fakedate | 59 ++++++++++++++++++++++++++++
package/fakedate/fakedate.mk | 15 ++++++++
package/python/python.mk | 15 ++++++--
package/python3/python3.mk | 15 ++++++--
support/dependencies/dependencies.mk | 2 -
support/scripts/pycompile.py | 11 +++++-
toolchain/toolchain-wrapper.c | 74 +++++++++++++++++++++++++++++++++++-
13 files changed, 222 insertions(+), 14 deletions(-)
create mode 100755 package/fakedate/fakedate
create mode 100644 package/fakedate/fakedate.mk
--
1.9.1
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