mac下使用brew安裝arm版php7.2，pecl命令安裝swoole
命令：pecl install swoole
發生如下報錯

/private/tmp/pear/temp/swoole/ext-src/php_swoole_private.h:84:2: error: "Enable openssl support, require openssl library"
#error "Enable openssl support, require openssl library"
 ^
In file included from /private/tmp/pear/temp/swoole/ext-src/php_swoole.cc:16:
In file included from /private/tmp/pear/temp/swoole/ext-src/php_swoole_cxx.h:20:
In file included from /private/tmp/pear/temp/swoole/ext-src/php_swoole_coroutine.h:22:
In file included from /private/tmp/pear/temp/swoole/include/swoole_coroutine.h:22:
In file included from /private/tmp/pear/temp/swoole/include/swoole_socket.h:33:
/private/tmp/pear/temp/swoole/include/swoole_ssl.h:27:10: fatal error: 'openssl/ssl.h' file not found
#include <openssl/ssl.h>
         ^~~~~~~~~~~~~~~
2 errors generated.
make: *** [ext-src/php_swoole.lo] Error 1
ERROR: `make' failed
 

openssl本機已安裝，所以只需要提示是否啟用openssl指定路徑即可（以下路徑為brew安裝openssl路徑）

➜  ~ pecl install swoole

...
enable sockets supports? [no] : yes
enable openssl support? [no] : yes --with-openssl-dir=/opt/homebrew/opt/openssl
...