hppa64: Disable -gc-section support on hppa*64*-*-hpux*

hppa64: Disable -gc-section support on hppa*64*-*-hpux*

The HP-UX dynamic linker on hppa generates an error if it detects
a dynamic relocation with the R_PARISC_NONE type.  As a result,
there is no way to handle relocations in sections that are garbage
collected.  Although these can mostly be avoided, I think it best
to disable -gc-section support.

2026-05-06  John David Anglin  <danglin@gcc.gnu.org>

bfd/ChangeLog:

	* elf64-hppa.c (elf_hppa_final_link_relocate): Rework
	BFD_ASSERT to only trigger on hpux.  Zero rela if the
	new offset is invalid.
	(elf_backend_can_gc_sections): Set to zero on hpux.

ld/ChangeLog:

	* testsuite/ld-elf/group8a.d: xfail hppa*64*-*-hpux*.
	* testsuite/ld-elf/group8b.d: Likewise.
	* testsuite/ld-elf/group9a.d: Likewise.
	* testsuite/ld-elf/group9b.d: Likewise.
	* testsuite/ld-elf/pr12851.d: Likewise.
	* testsuite/ld-elf/pr22677.d: Likewise.