msgpack php 安装,在ubuntu16.04下编译安装php7的扩张msgpack2.0.1

提示如下错误：C语言忘光了,查看了msgpack.c的源码 不知道如果处理，望高手帮助

/data/softwares/php-7.1.0beta3/ext/msgpack-2.0.1/msgpack.c: In function ‘ps_srlzr_decode_msgpack’:

/data/softwares/php-7.1.0beta3/ext/msgpack-2.0.1/msgpack.c:161:29: error: storage size of ‘var_hash’ isn’t known

msgpack_unserialize_data_t var_hash;

^

/data/softwares/php-7.1.0beta3/ext/msgpack-2.0.1/msgpack.c: In function ‘php_msgpack_unserialize’:

/data/softwares/php-7.1.0beta3/ext/msgpack-2.0.1/msgpack.c:211:29: error: storage size of ‘var_hash’ isn’t known

msgpack_unserialize_data_t var_hash;

^

Makefile:193: recipe for target 'msgpack.lo' failed

make: * [msgpack.lo] Error 1