[gcc r13-5042] configure: remove dependencies on gmp and mpfr when gdb is disabled

[Cl?ment Chigot <helflym@gcc.gnu.org>]

https://gcc.gnu.org/g:5977d14a6081184ba10a671585e553e1e9ac0112

commit r13-5042-g5977d14a6081184ba10a671585e553e1e9ac0112
Author: Clément Chigot <chigot@adacore.com>
Date:   Tue Jan 3 14:24:43 2023 +0100

    configure: remove dependencies on gmp and mpfr when gdb is disabled
    
    Since 91e0d22025e0bf2af2e364cb7214a05512a0c431, the configure checks
    about GMP and MPFR for gdb builds have been moved to the toplevel
    configure.
    However, it doesn't take into account the --disable-gdb option. Meaning
    that a build without gdb will require these libraries even if not
    needed.
    
    ChangeLog:
    
            * configure.ac: Skip GMP and MPFR when --disable-gdb is
            provided.
            * configure: Regenerate.

Diff:
---
 configure    | 4 +++-
 configure.ac | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index d6716e38e99..85883099410 100755
--- a/configure
+++ b/configure
@@ -7913,7 +7913,9 @@ if test -d ${srcdir}/gcc ; then
   require_mpc=yes
 fi
 if test -d ${srcdir}/gdb ; then
-  require_gmp=yes
+  if test "x$enable_gdb" != xno; then
+   require_gmp=yes
+  fi
 fi
 
 gmplibs="-lmpfr -lgmp"
diff --git a/configure.ac b/configure.ac
index 737c1a1172b..2b612dce6e9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1489,7 +1489,9 @@ if test -d ${srcdir}/gcc ; then
   require_mpc=yes
 fi
 if test -d ${srcdir}/gdb ; then
-  require_gmp=yes
+  if test "x$enable_gdb" != xno; then
+   require_gmp=yes
+  fi
 fi
 
 gmplibs="-lmpfr -lgmp"