On Mon, 13 Sep 2021, John David Anglin wrote: > On 2021-09-13 11:05 a.m., Jeff Law wrote: > > > > > > On 9/13/2021 8:58 AM, John David Anglin wrote: > >> On 2021-09-13 9:53 a.m., Jeff Law wrote: > >>>> It is in fact also hpux11*, thus all 32bit pa configs that do not support > >>>> DWARF (for whatever reasons). > >>> We used embedded stabs for SOM (the native format for 32bit PA). SOM is a > >>> variant of COFF and could easily support dwarf I would think since > >>> it had support for fairly arbitrary sections. Hell, it was already > >>> supporting embedded stabs as well as HP's proprietary debugging format. > >>> > >>> But I'd consider 32bit SOM on hpux11 dead too :-) > >> I don't disagree but 32bit SOM still builds on hpux11: > >> https://gcc.gnu.org/pipermail/gcc-testresults/2021-August/718130.html > >> > >> Suspect the change will cause a lot of warnings. > > It might, but with stabs going away something needs to be done with these > > legacy systems. Either they need to move into the modern world, > > deal with the diagnostic or get dropped. > I believe the 32-bit SOM target should be deprecated. I'm the only one > maintaining it and I had some health issues earlier this year. > The current versions should suffice for several years.
Do you think it's worth keeping the 32bit pa hpux targets for another release but guarded with --enable-obsolete or can we remove those configurations right away? In the current setting configurations that do not support DWARF will get no debug info with -g (with a warning that this happens) and STABS debug info with -gstabs (with a warning about its deprecation). That might not be the final outcome for GCC 12 but it's the minimal change I'm working towards. > My main interest is the Debian parisc-linux target. It's fully up to date > and thousands of packages are available. Most kernels are 64-bit. > Since there's no 64-bit runtime for Linux, we still need the 64-bit hpux > target for 64-bit compile testing. The 64bit pa configs seem to support DWARF so they are fine, correct, it's only 32bit hpux configs that we'll leave behind. Richard. > > > >> > >> There is some support for hpux10/11 in qemu but it takes a lot of work to > >> provide the build infrastructure needed for gcc. > > I would think so. > Recently had to move my build infrastructure to a "new" machine, so I'm fully > aware that it's not easy. > > > >> > >> DWARF isn't supported because we lack named sections. That could be > >> worked around > >> but probably the gdb versions that work on 32-bit hpux11 wouldn't support > >> DWARF. > > I'd be a bit surprised if that were true. dwarf support has been around a > > long long time in GDB. Hell, it was around when I did the original > > 64bit PA work back in the 90s. > There's a chance it might work with the right section names. However dwarf 5 > wouldn't be supported. That's an > issue that I noticed recently.
