add imap support

src/SPC/builder/extension/imap.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\extension;
+
+use SPC\builder\Extension;
+use SPC\exception\WrongUsageException;
+use SPC\util\CustomExt;
+
+#[CustomExt('imap')]
+class imap extends Extension
+{
+    /**
+     * @throws WrongUsageException
+     */
+    public function getUnixConfigureArg(): string
+    {
+        if ($this->builder->getOption('enable-zts')) {
+            throw new WrongUsageException('ext-imap is not thread safe, do not build it with ZTS builds');
+        }
+        $arg = '--with-imap=' . BUILD_ROOT_PATH;
+        if ($this->builder->getLib('openssl') !== null) {
+            $arg .= ' --with-imap-ssl=' . BUILD_ROOT_PATH;
+        }
+        return $arg;
+    }
+}