Compressed debug information

[Tom Kacvinsky]

HI,

I have a question about compressed debug sections.  I think I am
getting compressed debug sections because a build of our product
with -gz=none (using GCC 12.1) results in larger artifacts than a
build without -gz=none.  Moreover, if I use ld.lld for the linker, where
I built LLVM without zlib support, it complains that the object files were
ELF_COMPRESSED and ld.lld could not handle them because LLVM
was built with zlib support.

Because of that I am under  the impression that the compressed debug
section object files fed into the linker result in compressed debug sections
in the final shared library or executable, provided the linker can handle
compressed debug sections.

But I don't know how to verify that the final debug section(s) in the
executables/shared libraries have debug information.  Google was not my
friend with respect to determining that.  I looked at readelf and
objdump options (from binutils 2.39) and didn't see an option for that. I
also looked at dwarfdump output but didn't see anything.

Any hints?

Thanks,

Tom