Rainer Orth 1bcba38291 build: Cherry-pick libtool.m4 support for GNU ld *_sol2 emulations
GNU ld gained separate Solaris-specific linker emulations (*_sol2) long
ago.  Since their introduction, GCC has preferred them over their
non-*_sol2 counterparts but supported both forms.  This has changed for
GCC 16: since all supported versions of GNU ld do support the *_sol2
emulations, GCC now uses them unconditionally.

libtool has also been updated to handle this since libtool 2.4.2 back in
2011.  However, that change has only partially been backported to the
heavily patched libtool.m4 in the GCC tree: the sparcv9 part is there,
but the amd64 part is missing for some reason.  This causes problems
with some recent binutils changes.

Therefore this patch cherry-picks the libtool patch to bring
Solaris/x86_64 in sync with Solaris/sparcv9 and upstream libtool.

Bootstrapped without regressions on {amd64,i386}-pc-solaris2.11 and
{sparcv9,sparc}-sun-solaris2.11.

2025-09-22  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* libtool.m4: Cherry-pick libtool commit
	9196966580f6853a31187a7a3c7e7ff36ef08982.

	gcc:
	* configure: Regenerate.

	libatomic:
	* configure: Regenerate.

	libbacktrace:
	* configure: Regenerate.

	libcc1:
	* configure: Regenerate.

	libffi:
	* configure: Regenerate.

	libga68:
	* configure: Regenerate.

	libgcobol:
	* configure: Regenerate.

	libgfortran:
	* configure: Regenerate.

	libgm2:
	* configure: Regenerate.

	libgomp:
	* configure: Regenerate.

	libgrust:
	* configure: Regenerate.

	libitm:
	* configure: Regenerate.

	libobjc:
	* configure: Regenerate.

	libphobos:
	* configure: Regenerate.

	libquadmath:
	* configure: Regenerate.

	libsanitizer:
	* configure: Regenerate.

	libssp:
	* configure: Regenerate.

	libstdc++-v3:
	* configure: Regenerate.

	libvtv:
	* configure: Regenerate.

	lto-plugin:
	* configure: Regenerate.

	zlib:
	* configure: Regenerate.
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This directory contains the GNU Compiler Collection (GCC).

The GNU Compiler Collection is free software.  See the files whose
names start with COPYING for copying permission.  The manuals, and
some of the runtime libraries, are under different terms; see the
individual source files for details.

The directory INSTALL contains copies of the installation information
as HTML and plain text.  The source of this information is
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See the file gcc/doc/gcc.texi (together with other files that it
includes) for usage and porting information.  An online readable
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See http://gcc.gnu.org/bugs/ for how to report bugs usefully.

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