When GNU C Compiler is used on Solaris (11), the Thread Local Storage
is completely broken.  The behaviour doesn't manifest when GNU ld is
used.  Thus, we need to enforce usage of GNU ld when GNU C Compiler is
the compiler of choice.

For more background for this change, see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90912

(cherry picked from commit d584223653e17930109f37f5203acecca4090ca6)
--- bind-9.18.12/configure.ac	2023-02-03 12:25:47.438145409 +0100
+++ bind-9.18.12/configure.ac.new	2023-02-25 17:58:08.392224650 +0100
@@ -280,13 +280,13 @@
 #
 # Using Solaris linker with gcc on Solaris breaks Thread Local Storage
 #
-AS_CASE([$host],
-	[*-solaris*],[
-	    AS_IF([test "$GCC" = "yes"],
-		  [LDFLAGS="$LDFLAGS -zrelax=transtls"
-		   AC_MSG_WARN([When using GNU C Compiler on Solaris, -zrelax=transtls linker flag is used to fix bug in Thread Local Storage])
-		  ])
-	])
+#AS_CASE([$host],
+#	[*-solaris*],[
+#	    AS_IF([test "$GCC" = "yes"],
+#		  [LDFLAGS="$LDFLAGS -zrelax=transtls"
+#		   AC_MSG_WARN([When using GNU C Compiler on Solaris, -zrelax=transtls linker flag is used to fix bug in Thread Local Storage])
+#		  ])
+#	])
 
 AC_CHECK_HEADERS([fcntl.h regex.h sys/time.h unistd.h sys/mman.h sys/sockio.h sys/select.h sys/param.h sys/sysctl.h net/if6.h sys/socket.h net/route.h linux/netlink.h linux/rtnetlink.h], [], [],
 		 [$ac_includes_default