mac 编译PHP扩展 PDO_MYSQL报错

Question

192:pdo_mysql hongwei$ make
/bin/sh /Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql/libtool --mode=compile cc -I/usr/local/php7/include/php/ext -I -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1 -I. -I/Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql -DPHP_ATOM_INC -I/Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql/include -I/Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql/main -I/Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql -I/usr/local/php7/include/php -I/usr/local/php7/include/php/main -I/usr/local/php7/include/php/TSRM -I/usr/local/php7/include/php/Zend -I/usr/local/php7/include/php/ext -I/usr/local/php7/include/php/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql/pdo_mysql.c -o pdo_mysql.lo
mkdir .libs
cc -I/usr/local/php7/include/php/ext -I -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1 -I. -I/Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql -DPHP_ATOM_INC -I/Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql/include -I/Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql/main -I/Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql -I/usr/local/php7/include/php -I/usr/local/php7/include/php/main -I/usr/local/php7/include/php/TSRM -I/usr/local/php7/include/php/Zend -I/usr/local/php7/include/php/ext -I/usr/local/php7/include/php/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql/pdo_mysql.c -fno-common -DPIC -o .libs/pdo_mysql.o
In file included from /Users/hongwei/Downloads/soft/php-7.1.1/ext/pdo_mysql/pdo_mysql.c:32:
./php_pdo_mysql_int.h:27:11: fatal error: 'ext/mysqlnd/mysqlnd.h' file not found

include "ext/mysqlnd/mysqlnd.h"

            ^

1 error generated.

我进ext目录看了下，发现文件是存在的，但是编译的时候就是找不到php版本是7.1.1