The brp-llvm-compile-lto-elf script uses PCRE in grep to match
for the -flto flag in bitcode object dumps, using negative
lookahead to exclude the case where -fno-lto is specified after.
When lines in the bitcode dump exceed the length that PCRE can
match against, grep will error out causing brp-llvm-compile-lto-elf
to fail.
This script implements an equivalent regex match in python to avoid
the limit in PCRE grep.
Resolves: rhbz#2017193
RPM requires macros to be at least 3 characters, so we need to
rename the cc macro anyway and using the build_ prefix is consistent
with other macros like build_cflags.
This allows us to maintain our own BuildRoot Policy scripts in an easier way.
This change needs to be coordinated with the addition of the files to python-srpm-macros.
redhat-rpm-config requires python-srpm-macros, so no significant change is expected for the packagers.
This also moves the Python BRPs to the end of the list which should be fine.
The script was dropped in rpm 4.17.0 beta1, so we can't very well
try to use it on builds. For now I'm intentionally dropping just the
macro definition: in case the Python community wants to bring it
back, all they need to do is revive the script and add the macro
definition for it.
On armv7hl, enabling annobin can in some cases lead to corrupt unwind
information in generated object files:
https://bugzilla.redhat.com/show_bug.cgi?id=1951492
The root-cause of this is still unclear and until this is sorted out,
it is best to disable annobin on the architecture.
Some packages require being able to redefine the compiler variables
set to add additional base arguments that must be used everywhere.
This change makes it possible for that to work correctly.
A new script brp-fix-pyc-reproducibility creates an opt-in way of how to fix
problems with the reproducibility of byte-compiled Python files. The script
uses marshalparser [0] which currently doesn't provide solutions for all issues
but can fix at least problems with reference flags. For more info see
this Bugzilla [1].
If you want to use this new feature, you need to define
`%py_reproducible_pyc_path` to specify a path you want to fix `.pyc`
files in (recursively) and build-require /usr/bin/marshalparser.
if you forget to build-require the parser. The error message is:
```
+ /usr/lib/rpm/redhat/brp-python-bytecompile '' 1 0
Bytecompiling .py files below /builddir/build/BUILDROOT/tldr-0.5-2.fc33.x86_64/usr/lib/python3.9 using /usr/bin/python3.9
+ /usr/lib/rpm/redhat/brp-fix-pyc-reproducibility /builddir/build/BUILDROOT/tldr-0.5-2.fc33.x86_64
ERROR: If %py_reproducible_pyc_path is defined, you have to also BuildRequire: /usr/bin/marshalparser !
error: Bad exit status from /var/tmp/rpm-tmp.UUJr4v (%install)
```
A build fails if the parser is not able to parse any of the `.pyc` files.
And finally, if a build is properly configured it produces fixed `.pyc` files.
Currently, `.pyc` files in the tldr package contain a lot of unused reference flags:
```
$ dnf install -y tldr
$ marshalparser --unused /usr/lib/python3.9/site-packages/__pycache__/tldr.cpython-39.pyc
… long output …
190 - Flag_ref(byte=9610, type='TYPE_SHORT_ASCII_INTERNED', content=b'init', usages=0)
191 - Flag_ref(byte=9633, type='TYPE_SHORT_ASCII_INTERNED', content=b'source', usages=0)
192 - Flag_ref(byte=9651, type='TYPE_SHORT_ASCII_INTERNED', content=b'argv', usages=0)
193 - Flag_ref(byte=9657, type='TYPE_SHORT_ASCII_INTERNED', content=b'print_help', usages=0)
194 - Flag_ref(byte=9669, type='TYPE_SHORT_ASCII_INTERNED', content=b'stderr', usages=0)
195 - Flag_ref(byte=9682, type='TYPE_SHORT_ASCII_INTERNED', content=b'parse_args', usages=0)
196 - Flag_ref(byte=9737, type='TYPE_SHORT_ASCII_INTERNED', content=b'encode', usages=0)
197 - Flag_ref(byte=9782, type='TYPE_SHORT_ASCII_INTERNED', content=b'parser', usages=0)
198 - Flag_ref(byte=9790, type='TYPE_SHORT_ASCII_INTERNED', content=b'options', usages=0)
199 - Flag_ref(byte=9799, type='TYPE_SHORT_ASCII_INTERNED', content=b'rest', usages=0)
200 - Flag_ref(byte=9821, type='TYPE_SHORT_ASCII_INTERNED', content=b'result', usages=0)
202 - Flag_ref(byte=10022, type='TYPE_SHORT_ASCII_INTERNED', content=b'__main__', usages=0)
203 - Flag_ref(byte=10102, type='TYPE_SHORT_ASCII_INTERNED', content=b'argparse', usages=0)
204 - Flag_ref(byte=10433, type='TYPE_SHORT_ASCII_INTERNED', content=b'__name__', usages=0)
205 - Flag_ref(byte=10463, type='TYPE_SHORT_ASCII_INTERNED', content=b'<module>', usages=0)
```
This new feature fixes them:
```
$ marshalparser --unused /usr/lib/python3.9/site-packages/__pycache__/tldr.cpython-39.pyc
<empty output>
```
[0] https://github.com/fedora-python/marshalparser
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1686078
This macro calls `rpm` on background, which is not good idea. Luckily,
it seems to be used just by samba package, so it should not cause any
substantial issues.
More details at \[[1]\] where the guideline to ban `rpm` call during
build is discussed.
[1]: https://pagure.io/packaging-committee/pull-request/954
This config is to let libtool recognize that our 64bit variant of
%_libdir is actually on the standard/default library path, so libtool
doesn't think it has to be hard-wired as RPATH. This is proper solution
for libtool RPATH issues described in:
https://docs.fedoraproject.org/en-US/packaging-guidelines/#_removing_rpath
The libtool script/macros (new enough, v2.4.6+) honor this variable when
it isn't possible to detect the system-wide default library path. It is
e.g. able to parse /etc/ld.so.* configuration, but there's no info about
/usr/lib64 on Fedora.
So to not force everybody to do:
%configure LT_SYS_LIBRARY_PATH=...
... rather set this system-wide. This is low-risk change since
older libtool scripts don't use this variable, and really no other
tools should.
If %source_date_epoch_from_changelog is true, RPM can set the SOURCE_DATE_EPOCH
environment variable to the timestamp of the topmost changelog entry. The
SOURCE_DATE_EPOCH can be in turn used by various projects to override otherwise
dynamically generated timestamps.
E.g. this might help to have stable timestamps in generated
documentation etc.
Rpm 4.15 removes various language-specific macros. Python side is
already covered by the versioned python macros but this is not the
case with Perl, macros. Add them here temporarily to avoid breaking
the world, but these really belong to perl-macros or such.
Once upon a time these did differ (for various bad reasons) but the
version in rpm has been identical to ours for many years, lets shed
some old baggage.
