AC_CHECK_HEADERS([localcharset.h langinfo.h endian.h byteswap.h])
AC_CHECK_HEADERS([fdk-aac/aacenc_lib.h], ,
AC_MSG_ERROR([libfdk-aac is required]))
AC_CHECK_HEADERS([localcharset.h langinfo.h endian.h byteswap.h])
AC_CHECK_HEADERS([fdk-aac/aacenc_lib.h], ,
AC_MSG_ERROR([libfdk-aac is required]))