diff --git a/dl/dl.gyp b/dl/dl.gyp
index 9fd09b8..0573ce2 100644
--- a/dl/dl.gyp
+++ b/dl/dl.gyp
@@ -18,6 +18,14 @@
       'include_dirs': [
         '../',
       ],
+      'cflags!': [
+        '-mfpu=vfpv3-d16',
+      ],
+      'cflags': [
+        # We enable Neon instructions even with arm_neon==0, to support
+        # runtime detection.
+        '-mfpu=neon',
+      ],
       'sources': [
         'api/armCOMM_s.h',
         'api/armOMX.h',