sqlite2: update config.{guess,sub} for arm64

databases/sqlite2/Portfile

@@ -23,6 +23,15 @@ depends_lib		port:readline
 
 patchfiles		patch-configure patch-Makefile.in implicit.patch
 
+# Update config.guess and config.sub to be able to build on arm64.
+depends_build-append    port:automake
+post-patch {
+    set automake_dirs [glob -directory ${prefix}/share automake-*]
+    set automake_dir [lindex [lsort -command vercmp $automake_dirs] end]
+    copy -force ${automake_dir}/config.guess ${automake_dir}/config.sub \
+        ${worksrcpath}
+}
+
 build.type		gnu
 
 universal_variant	no