原文: extern "C" { ..... ..... 83 XMMS_XFORM_PLUGIN ("mac", 84 "Monkey's Audio", XMMS_VERSION, 85 "Monkey's Audio Decoder", 86 xmms_mac_plugin_setup); 87 88 } 只要把83行前添加extern "C" 就可以正常输出符号。 改成 } 83 extern "C" XMMS_XFORM_PLUGIN ("mac", 84 "Monkey's Audio", XMMS_VERSION, 85 "Monkey's Audio Decoder", 86 xmms_mac_plugin_setup); 87