diff --git a/jni/libsamplerate-0.1.8/M4/add_cflags.m4 b/jni/libsamplerate-0.1.8/M4/add_cflags.m4
new file mode 100644
index 0000000..7b6b555
--- /dev/null
+++ b/jni/libsamplerate-0.1.8/M4/add_cflags.m4
@@ -0,0 +1,17 @@
+dnl @synopsis AC_ADD_CFLAGS
+dnl
+dnl Add the given option to CFLAGS, if it doesn't break the compiler
+
+AC_DEFUN([AC_ADD_CFLAGS],
+[AC_MSG_CHECKING([if $CC accepts $1])
+	ac_add_cflags__old_cflags="$CFLAGS"
+	CFLAGS="$CFLAGS $1"
+	AC_TRY_LINK([
+			#include <stdio.h>
+			],
+		[puts("Hello, World!"); return 0;],
+		AC_MSG_RESULT([yes]),
+		AC_MSG_RESULT([no])
+		CFLAGS="$ac_add_cflags__old_cflags"
+		)
+])# AC_ADD_CFLAGS