build: Require binutils 2.30+ on Solaris [PR121457, PR121458]

I recently noticed that gcc/configure.ac contains quite a number of
checks for Solaris ld and GNU ld versions that can be massively
simplified.  GCC trunk only supports Solaris 11.4, thus Solaris ld is at
least at version 5.11-1.3159 (the one in 11.4 FCS), and GNU ld can be
required to be at least 2.30.1, the version bundled in 11.4 FCS.

This way quite a number of special cases can simply be removed, as well
as some macros that depend on them and the code they guard.

To ensure that nobody tries to use an older self-compiled version of GNU
ld, the minimum version is checked at configure time.

This change also allowed to fix two bugs that were caused by checks for
*_sol2 among the linker emulations listed by gld -V, which are only valid
when targetting Solaris.  Before those checks were done irrespective of
target, causing checks to go wrong when a version of binutils configured
with --enable-targets=all was used.  Since now all versions of GNU ld
supported on Solaris are known to support those *_sol2 emulations, the
checks can be replaced by hardcoding the emulations when targetting
Solaris.

Bootstrapped without regressions on i386-pc-solaris2.11,
sparc-sun-solaris2.11, and x86_64-pc-linux-gnu.

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

	gcc:
	PR target/121458
	PR target/121457
	* configure.ac: Fix typos.
	<*-*-solaris2*>: Require GNU ld 2.30.
	(comdat_group) <*-*-solaris2.1[1-9]*>: Always set to yes.
	(ld_ix86_gld_32_opt): Only use -melf_i386_sol2 for Solaris target.
	(ld_ix86_gld_64_opt): Likewise with -melf_x86_64_sol.
	(gcc_cv_ld_eh_frame_hdr) <*-*-solaris2*>: Likewise.
	(gcc_cv_ld_pie) <*-*-solaris2*>: Remove special cases.
	(gcc_cv_ld_compress_debug) <*-*-solaris2*>: Remove guard.
	(gcc_cv_ld_as_needed): Simplify guard.
	(gcc_cv_ld_sol2_emulation): Remove.
	(gcc_cv_solaris_crts): Remove.
	* configure: Regenerate.
	* config.in: Regenerate.

	* config/sol2.h (STARTFILE_CRTBEGIN_SPEC): Remove !HAVE_LD_PIE
	support.
	(ENDFILE_CRTEND_SPEC): Likewise.
	(LD_PIE_SPEC): Likewise.
	[USE_GLD] (LINK_EH_SPEC): Set unconditionally.
	* config/i386/sol2.h [USE_GLD]: Remove !HAVE_LD_SOL2_EMULATION
	support.
	* config/sparc/sol2.h: Likewise.

	* doc/install.texi (Specific, *-*-solaris2*): Update bundled gcc
	versions.
	Raise required binutils version.
	Remove binutils 2.44 caveat.

0 files changed, 0 insertions, 0 deletions