Bug#939656: dh_strip should strip sections with LTO information from .a and .o files / lintian should warn about these
Package: debhelper,lintian
Severity: important
Some packages build with link time optimizations enabled, which is ok, whoever
then these packages may ship with static libs which still have the LTO
information in some sections of the object files (e.g. ext2fsprogs). This is
not desired in most cases, so this information should be removed from these
files, and not shipped in the archive. Plus the streaming format for the LTO
information changes (even in GCC minor releases), and leads to build errors when
you try to use an old streaming format with a newer compiler. I'm asking for
- dh_strip removing sections, as in
strip -R .gnu.lto_* -R .gnu.debuglto_* -N __gnu_lto_slim -N __gnu_lto_v1
which is turned on by default.
- dh_strip providing an option not to remove these sections.
- lintian warning about object files and static archives having such
sections.
I'd like to see that implemented in debhelper, because LTO builds are also
sometimes enabled in upstream sources.
LTO is turned on by default in Suse, and their dh_strip equivalent provides the
functionality above for the removal of the LTO information.
Please feel free to split this issue into separate debhelper and lintian tasks
once a solution is agree upon.
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