add memcached for macOS

config/ext.json

@@ -53,6 +53,19 @@
             "sockets"
         ]
     },
+    "memcached": {
+        "type": "external",
+        "source": "memcached",
+        "arg-type": "custom",
+        "cpp-extension": true,
+        "lib-depends": [
+            "libmemcached"
+        ],
+        "ext-depends": [
+            "session",
+            "zlib"
+        ]
+    },
     "exif": {
         "type": "builtin"
     },

config/lib.json

@@ -462,6 +462,13 @@
             "zconf.h"
         ]
     },
+    "libmemcached": {
+        "source": "libmemcached",
+        "static-libs-unix": [
+            "libmemcached.a",
+            "libmemcachedutil.a"
+        ]
+    },
     "zstd": {
         "source": "zstd",
         "static-libs-unix": [

config/source.json

@@ -16,6 +16,25 @@
             "path": "LICENSE"
         }
     },
+    "memcached": {
+        "type": "url",
+        "url": "https://pecl.php.net/get/memcached",
+        "path": "php-src/ext/memcached",
+        "filename": "memcached.tgz",
+        "license": {
+            "type": "file",
+            "path": "LICENSE"
+        }
+    },
+    "libmemcached": {
+        "type": "git",
+        "url": "https://github.com/crazywhalecc/libmemcached-macos.git",
+        "rev": "master",
+        "license": {
+            "type": "file",
+            "path": "COPYING"
+        }
+    },
     "brotli": {
         "type": "ghtar",
         "repo": "google/brotli",