diff --git a/ndk/platforms/android-21/arch-arm64/include/asm/a.out.h b/ndk/platforms/android-21/arch-arm64/include/asm/a.out.h
new file mode 100644
index 000000000..8b1378917
--- /dev/null
+++ b/ndk/platforms/android-21/arch-arm64/include/asm/a.out.h
@@ -0,0 +1 @@
+
diff --git a/ndk/platforms/android-21/arch-mips/include/asm/a.out.h b/ndk/platforms/android-21/arch-mips/include/asm/a.out.h
new file mode 100644
index 000000000..8b1378917
--- /dev/null
+++ b/ndk/platforms/android-21/arch-mips/include/asm/a.out.h
@@ -0,0 +1 @@
+
diff --git a/ndk/platforms/android-21/arch-mips64/include/asm/a.out.h b/ndk/platforms/android-21/arch-mips64/include/asm/a.out.h
new file mode 100644
index 000000000..8b1378917
--- /dev/null
+++ b/ndk/platforms/android-21/arch-mips64/include/asm/a.out.h
@@ -0,0 +1 @@
+