Remove obsolete Solaris 11.3 support

Support for Solaris 11.3 had already been obsoleted in GCC 13.  However,
since the only Solaris system in the cfarm was running 11.3, I've kept
it in tree until now when both Solaris 11.4/SPARC and x86 systems have
been added.

This patch actually removes the Solaris 11.3 support.  Apart from
several minor simplifications, there are two more widespread changes:

* In Solaris 11.4, libsocket and libnsl were folded into libc, so
  there's no longer a need to link them explictly.

* Since Solaris 11.4, Solaris includes all crts needed by gcc (like
  crt1.o and gcrt1.o) with the base system.  All workarounds to provide
  fallbacks can thus go.

Bootstrapped without regressions on i386-pc-solaris2.11 and
sparc-sun-solaris2.11 (as/ld, gas/ld, and gas/gld) as well as Solaris
11.3/x86 to ascertain that version is actually rejected.

2024-04-30  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	c++tools:
	* configure.ac (ax_lib_socket_nsl.m4): Don't sinclude.
	(AX_LIB_SOCKET_NSL): Don't call.
	(NETLIBS): Remove.
	* configure: Regenerate.
	* Makefile.in (NETLIBS): Remove.
	(g++-mapper-server$(exeext)): Remove $(NETLIBS).

	gcc:
	* config.gcc: Move *-*-solaris2.11.[0-3]* to unsupported list.
	<*-*-solaris2*> (default_use_cxa_atexit): Set unconditionally.
	* configure.ac (AX_LIB_SOCKET_NSL): Don't call.
	(NETLIBS): Remove.
	(gcc_cv_ld_aligned_shf_merge): Remove.
	(hidden_linkonce) <i?86-*-solaris2* | x86_64-*-solaris2*>: Remove.
	(gcc_cv_target_dl_iterate_phdr) <*-*-solaris2*>: Always set to yes.
	* Makefile.in (NETLIBS): Remove.
	* configure, config.in, aclocal.m4: Regenerate.
	* config/sol2.h: Don't check HAVE_SOLARIS_CRTS.
	(STARTFILE_SPEC): Remove !HAVE_SOLARIS_CRTS case.
	[USE_GLD] (LINK_EH_SPEC): Remove TARGET_DL_ITERATE_PHDR guard.
	* config/i386/i386.cc (USE_HIDDEN_LINKONCE): Remove guard.
	* varasm.cc (mergeable_string_section): Remove
	HAVE_LD_ALIGNED_SHF_MERGE handling.
	(mergeable_constant_section): Likewise.

	* doc/install.texi (Specific,i?86-*-solaris2*): Reference Solaris
	11.4 only.
	(Specific, *-*-solaris2*): Document Solaris 11.3 removal.  Remove
	11.3 references and caveats.  Update for 11.4.

	gcc/cp:
	* Make-lang.in (cc1plus$(exeext)): Remove $(NETLIBS).

	gcc/objcp:
	* Make-lang.in (cc1objplus$(exeext)): Remove $(NETLIBS).

	gcc/testsuite:
	* lib/target-supports.exp (check_effective_target_pie): Always
	enable on *-*-solaris2*.

	libgcc:
	* configure.ac <*-*-solaris2*> (libgcc_cv_solaris_crts): Remove.
	* config.host <*-*-solaris2*>: Remove !libgcc_cv_solaris_crts
	support.
	* configure, config.in: Regenerate.
	* config/sol2/gmon.c (internal_mcount) [!HAVE_SOLARIS_CRTS]: Remove.
	* config/i386/sol2-c1.S, config/sparc/sol2-c1.S: Remove.
	* config/sol2/t-sol2 (crt1.o, gcrt1.o): Remove.

	libstdc++-v3:
	* testsuite/lib/dg-options.exp (add_options_for_net_ts)
	<*-*-solaris2*>: Don't link with -lsocket -lnsl.

1 files changed, 0 insertions, 103 deletions

diff --git a/libgcc/config/sparc/sol2-c1.S b/libgcc/config/sparc/sol2-c1.S
deleted file mode 100644
index fecbb66..0000000
--- a/libgcc/config/sparc/sol2-c1.S
+++ /dev/null
@@ -1,103 +0,0 @@
-! crt1.s for sparc & sparcv9 (SunOS 5)
-
-!   Copyright (C) 1992-2024 Free Software Foundation, Inc.
-!   Written By David Vinayak Henkel-Wallace, June 1992
-! 
-! This file is free software; you can redistribute it and/or modify it
-! under the terms of the GNU General Public License as published by the
-! Free Software Foundation; either version 3, or (at your option) any
-! later version.
-! 
-! This file is distributed in the hope that it will be useful, but
-! WITHOUT ANY WARRANTY; without even the implied warranty of
-! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-! General Public License for more details.
-! 
-! Under Section 7 of GPL version 3, you are granted additional
-! permissions described in the GCC Runtime Library Exception, version
-! 3.1, as published by the Free Software Foundation.
-!
-! You should have received a copy of the GNU General Public License and
-! a copy of the GCC Runtime Library Exception along with this program;
-! see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-! <http://www.gnu.org/licenses/>.
-
-! This file takes control of the process from the kernel, as specified
-! in section 3 of the SVr4 ABI.
-! This file is the first thing linked into any executable.
-
-#ifdef __sparcv9
-#define	CPTRSIZE	8
-#define	CPTRSHIFT	3
-#define	STACK_BIAS	2047
-#define	ldn		ldx
-#define	stn		stx
-#define setn(s, scratch, dst)	setx s, scratch, dst
-#else
-#define	CPTRSIZE	4
-#define	CPTRSHIFT	2
-#define	STACK_BIAS	0
-#define	ldn		ld
-#define	stn		st
-#define setn(s, scratch, dst)	set s, dst
-#endif
-
-	.section	".text"
-	.proc	022
-	.global	_start
-
-_start:
-	mov	0, %fp		! Mark bottom frame pointer
-	ldn	[%sp + (16 * CPTRSIZE) + STACK_BIAS], %l0	! argc
-	add	%sp, (17 * CPTRSIZE) + STACK_BIAS, %l1		! argv
-
-	! Leave some room for a call.  Sun leaves 32 octets (to sit on
-	! a cache line?) so we do too.
-#ifdef __sparcv9
-	sub	%sp, 48, %sp
-#else
-	sub	%sp, 32, %sp
-#endif
-
-	! %g1 may contain a function to be registered w/atexit
-	orcc	%g0, %g1, %g0
-#ifdef __sparcv9
-	be	%xcc, .nope
-#else
-	be	.nope
-#endif
-	mov	%g1, %o0
-	call	atexit
-	nop   
-.nope:
-	! Now make sure constructors and destructors are handled.
-	setn(_fini, %o1, %o0)
-	call	atexit, 1
-	nop
-	call	_init, 0
-	nop
-
-	! We ignore the auxiliary vector; there is no defined way to
-	! access those data anyway.  Instead, go straight to main:
-	mov	%l0, %o0	! argc
-	mov	%l1, %o1	! argv
-#ifdef GCRT1
-	setn(___Argv, %o4, %o3)
-	stn	%o1, [%o3]      ! *___Argv
-#endif
-	! Skip argc words past argv, to env:
-	sll	%l0, CPTRSHIFT, %o2
-	add	%o2, CPTRSIZE, %o2
-	add	%l1, %o2, %o2	! env
-	setn(_environ, %o4, %o3)
-	stn	%o2, [%o3]	! *_environ
-	call	main, 4
-	nop   
-	call	exit, 0
-	nop   
-	call	_exit, 0
-	nop   
-	! We should never get here.
-
-	.type	_start,#function
-	.size	_start,.-_start