Enable support for .init_array and .fini_array, which FreeBSD supports
since commit 83aa9cc00c2d83d05a0efe7a1496d8aab4a153bb in the src
repository.

There __FreeBSD_version is 1000009, so we start enabling the support
from __FreeBSD_version == 1000010.
--- gcc/configure.orig	2023-05-11 22:33:34 UTC
+++ gcc/configure
@@ -24214,6 +24214,13 @@ EOF
 #else
 # if defined __sun__ && defined __svr4__
    /* Solaris ld.so.1 supports .init_array/.fini_array since Solaris 8.  */
+# elif defined __FreeBSD__
+#  include <sys/param.h>
+#   if __FreeBSD_version >= 1000010
+     /* FreeBSD supports .init_array/.fini_array since FreeBSD 10.  */
+#   else
+#    error The C library not known to support .init_array/.fini_array
+#   endif
 # else
 #  error The C library not known to support .init_array/.fini_array
 # endif
