driver: Simplify LINK_ARCH*_SPEC on Solaris

The various LINK_ARCH*_SPECs proved to be way more complex than
necessary:

* All uses of -YP,* can just go: they match the Solaris and GNU ld
  defaults.  In addition, the /usr/lib/libp entries are now superfluous:
  they only contain compatiblity symlinks to their counterparts in
  /usr/lib.  The %R parts are superceded by the -z sysroot/--sysroot
  options.

* With those options gone, LINK_ARCH{32,64}_SPEC_BASE are now identical
  and can be merged.

* It's no longer necessary to use arch-specific versions of the Solaris
  ld map.below4G linker map: with the new v2 mapfile syntax a single
  file can be used for all of SPARC, and x86, 32 and 64-bit.

* Similarly, with LINK_ARCH{32,64,DEFAULT}_SPEC being identical, a
  common LINK_ARCH_SPEC can be used with the single difference (erroring
  out on the non-default multilib in non-multilib configurations,
  e.g. -m64 for -m32-only configs) moved to a separate
  LINK_ARCH_ERROR_SPEC.

Bootstrapped without regressions on {i386,amd64}-pc-solaris2.11,
sparc{,v9}-sun-solaris2.11 with as/ld, gas/ld, and gas/gld plus
--disable-multilib builds of those.

2025-11-17  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	gcc:
	* config/sol2.h (LINK_ARCH32_SPEC_BASE): Don't provide -YP
	defaults.  Rename to ...
	(LINK_ARCH_SPEC_BASE): ... this.
	(LINK_ARCH32_SPEC): Remove.
	(LINK_ARCH64_SPEC_BASE): Remove.
	(LINK_ARCH64_SPEC): Rename to ...
	(LINK_ARCH_SPEC_1): ... this.
	[!USE_GLD]: Simplify map.below4G use.
	(LINK_ARCH_ERROR_SPEC): New macro.
	(LINK_ARCH32_SPEC): Remove.
	(LINK_ARCH_DEFAULT_SPEC): Remove.
	(LINK_ARCH_SPEC): Simplify using LINK_ARCH_ERROR_SPEC,
	LINK_ARCH_SPEC_1.
	(SUBTARGET_EXTRA_SPECS): Remove link_arch32, link_arch64
	link_arch_default.

0 files changed, 0 insertions, 0 deletions