--- lib-src/libnyquist/configure.ac.orig	2016-01-08 22:05:48 UTC
+++ lib-src/libnyquist/configure.ac
@@ -117,6 +117,8 @@ dnl Checks for typedefs, structures, and
 AC_C_CONST
 AC_TYPE_SIZE_T
 
+AC_SUBST([SNDFILE_CFLAGS])
+
 AC_CONFIG_FILES([Makefile])
 
 AC_OUTPUT