https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118221
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |hubicka at gcc dot gnu.org
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
You can possibly "emulate" multiple debug info sections by
compiling each TU with LTO and link it with -flinker-output=nolto-rel
-flto-partition=max and hack lto-wrapper (from GCC) to _not_ partially
link the LTRANS objects but put them into an archive. That would get you
-ffunction-sections by means of one object file per function (each with
separate debug info).
In the end it would be cleanest if GCC would produce .debug_info.FUNC
for .text.FUNC, possibly keeping the early debug for the full TU
inside .debug_info, thus effectively mimic the LTO debug info layout
within a single TU when using -ffunction-sections (and similarly
for -fdata-sections). But I don't see anybody spending the cycles on
this less used feature and thus would hope for a gdb / linker workaround.
