Need a way to check whether this API exists

Author: laruence

ext/phar/php_phar.h

@@ -34,6 +34,7 @@ extern zend_module_entry phar_module_entry;
 #define PHP_PHAR_API PHPAPI
 #endif
 
+#define PHP_PHAR_HAS_RESLOVE_ALIAS 
 PHP_PHAR_API int phar_resolve_alias(char *alias, int alias_len, char **filename, int *filename_len TSRMLS_DC);
 
 #endif /* PHP_PHAR_H */