commit 7b45afa632e0484835a56cc60393d5e118c0f605
Author: John Baldwin <jhb@FreeBSD.org>
Date:   Thu May 26 14:14:46 2022 -0700

    aarch64-fbsd-nat: Move definition of debug_regs_probed under HAVE_DBREG.
    
    This fixes the build on older FreeBSD systems without support for
    hardware breakpoints/watchpoints.
    
    (cherry picked from commit b2fdd31b03ef01a9a790ecb5d0dc0fea209b49ec)

diff --git gdb/aarch64-fbsd-nat.c gdb/aarch64-fbsd-nat.c
index 910bf5bb190..ab6ab36a39a 100644
--- gdb/aarch64-fbsd-nat.c
+++ gdb/aarch64-fbsd-nat.c
@@ -76,7 +76,6 @@ struct aarch64_fbsd_nat_target final : public fbsd_nat_target
 };
 
 static aarch64_fbsd_nat_target the_aarch64_fbsd_nat_target;
-bool aarch64_fbsd_nat_target::debug_regs_probed;
 
 /* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this
    for all registers.  */
@@ -154,6 +153,8 @@ aarch64_fbsd_nat_target::read_description ()
 }
 
 #ifdef HAVE_DBREG
+bool aarch64_fbsd_nat_target::debug_regs_probed;
+
 /* Set of threads which need to update debug registers on next resume.  */
 
 static std::unordered_set<lwpid_t> aarch64_debug_pending_threads;