diff --git a/config/libc/newlib.in.2 b/config/libc/newlib.in.2
index fd2a68b2..3708384f 100644
--- a/config/libc/newlib.in.2
+++ b/config/libc/newlib.in.2
@@ -35,3 +35,9 @@ config LIBC_NEWLIB_DISABLE_SUPPLIED_SYSCALLS
 	  _write... If you plan to port newlib to a new
 	  platform/board, say Yes.
 
+config LIBC_NEWLIB_EXTRA_CONFIG_ARRAY
+    string
+    prompt "Extra config for newlib"
+    default ""
+    help
+      Extra flags to pass onto ./configure when configuring the newlib.
diff --git a/scripts/build/libc/newlib.sh b/scripts/build/libc/newlib.sh
index 289c4dfb..70a970c1 100644
--- a/scripts/build/libc/newlib.sh
+++ b/scripts/build/libc/newlib.sh
@@ -99,7 +99,8 @@ do_libc_start_files() {
         --host=${CT_BUILD}                              \
         --target=${CT_TARGET}                           \
         --prefix=${CT_PREFIX_DIR}                       \
-        "${newlib_opts[@]}"
+        "${newlib_opts[@]}"                             \
+        "${CT_LIBC_NEWLIB_EXTRA_CONFIG_ARRAY[@]}"
 
     CT_DoLog EXTRA "Building C library"
     CT_DoExecLog ALL make ${JOBSFLAGS}