Notes for dolfin - reproducible builds result

Version annotated: 1.6.0-4
Identified issues:
Identifier: gcc_captures_build_path
Description Captures build path, e.g., /build/1st/foo-42.0 v. /build/foo-42.0/2nd
Currently we vary the build path only when testing packages from unstable
and experimental, for testing and stable we recommend that rebuilds
are done in the same path as the original build.
.
dpkg-buildflags version 1.20.6+ sets -ffile-prefix-map by default
(and -fdebug-prefix-map in older versions) which fixes this issue
in many cases, but not all (see: records_build_flags).
.
There are patches submitted upstream to address this specific issue, but they
are unlikely to be merged at this point:
.
https://gcc.gnu.org/ml/gcc-patches/2017-04/msg00513.html
.
When this is accepted into GCC upstream, we could remove this note.
In the meantime, please do not remove this issue, nor mark it as deterministic,
nor untag these packages.
Identifier: sphinxdoc_translations
URL https://github.com/sphinx-doc/sphinx/issues/9778
Description Sphinxdoc translates some titles based on content of LANGUAGE, etc.
.
https://bugs.debian.org/998059
Identifier: randomness_in_documentation_generated_by_sphinx
URL https://wiki.debian.org/ReproducibleBuilds/SphinxIssues
Description Sphinx might output references to memory addresses and generate a json index file
with entries in random order or with non-deterministic values (eg. searchindex.js).
See https://bugs.debian.org/822197 for memory address issue
.
searchindex.js needs sort_keys=True (jsonimpl.py) but the key values vary too.
Identifier: absolute_build_dir_in_docs_generated_by_doxygen_ref
URL https://github.com/doxygen/doxygen/issues/8037
Description Links to sources link to (eg. /build/1st)
Identifier: random_hashes_in_cython_output
Description Cython generates .c/.cpp code from a Python-like syntax. Some of it is has
random numbers in it.
 

Our notes about issues affecting packages are stored in notes.git and are targeted at packages in Debian in 'unstable/amd64' (unless they say otherwise).