[PATCHv2] Use toplevel configure for GMP and MPFR for gdb

[Jeff Law]

On 11/10/22 12:05, apinski--- via Gcc-patches wrote:
> From: Andrew Pinski <apinski@marvell.com>
>
> This patch uses the toplevel configure parts for GMP/MPFR for
> gdb. The only thing is that gdb now requires MPFR for building.
> Before it was a recommended but not required library.
> Also this allows building of GMP and MPFR with the toplevel
> directory just like how it is done for GCC.
> We now error out in the toplevel configure of the version
> of GMP and MPFR that is wrong.
>
> OK after GDB 13 branches? Build gdb 3 ways:
> with GMP and MPFR in the toplevel (static library used at that point for both)
> With only MPFR in the toplevel (GMP distro library used and MPFR built from source)
> With neither GMP and MPFR in the toplevel (distro libraries used)
>
> Changes from v1:
> * Updated gdb/README and gdb/doc/gdb.texinfo.
> * Regenerated using unmodified autoconf-2.69
>
> Thanks,
> Andrew Pinski
>
> ChangeLog:
> 	* Makefile.def: Add configure-gdb dependencies
> 	on all-gmp and all-mpfr.
> 	* configure.ac: Split out MPC checking from MPFR.
> 	Require GMP and MPFR if the gdb directory exist.
> 	* Makefile.in: Regenerate.
> 	* configure: Regenerate.
>
> gdb/ChangeLog:
>
> 	PR bug/28500
> 	* configure.ac: Remove AC_LIB_HAVE_LINKFLAGS
> 	for gmp and mpfr.
> 	Use GMPLIBS and GMPINC which is provided by the
> 	toplevel configure.
> 	* Makefile.in (LIBGMP, LIBMPFR): Remove.
> 	(GMPLIBS, GMPINC): Add definition.
> 	(INTERNAL_CFLAGS_BASE): Add GMPINC.
> 	(CLIBS): Exchange LIBMPFR and LIBGMP
> 	for GMPLIBS.
> 	* target-float.c: Make the code conditional on
> 	HAVE_LIBMPFR unconditional.
> 	* top.c: Remove code checking HAVE_LIBMPFR.
> 	* configure: Regenerate.
> 	* config.in: Regenerate.
> 	* README: Update GMP/MPFR section of the config
> 	options.
> 	* doc/gdb.texinfo: Likewise.

If the GDB folks confirm they want this behavior, then the toplevel bits 
are fine.

Jeff