cocosCreator封装的 jsb.Downloader不是很好用 特别是弱网情况，下载会卡住不动
以前在2dx上我用libcurl自己封装了下载 弱网 断点续传非常好用，这次准备把之前的引入到cocoCreator
发现2.4.6版本win32有这个库 安卓 ios没有，我把之前的拷贝过来一直报错：
/libcurl.a(libcurl_la-openssl.o):openssl.c:function ossl_seed: error: undefined reference to ‘RAND_load_file’
请问下 cocosCreator怎么引入libcurl库
@D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function ossl_seed: error: undefined reference to ‘RAND_load_file’
D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function ossl_seed: error: undefined reference to ‘RAND_egd’
D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function ossl_seed: error: undefined reference to ‘RAND_file_name’
D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function ossl_seed: error: undefined reference to ‘RAND_load_file’
D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function X509V3_ext: error: undefined reference to ‘sk_num’
D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function X509V3_ext: error: undefined reference to ‘sk_num’
D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function X509V3_ext: error: undefined reference to ‘sk_value’
D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function X509V3_ext: error: undefined reference to ‘sk_num’
D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function get_cert_chain.isra.4: error: undefined reference to ‘sk_num’
D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function get_cert_chain.isra.4: error: undefined reference to ‘sk_value’
D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function ossl_connect_step3: error: undefined reference to ‘sk_value’
D:/CocosDashboard_1.0.11/resources/.editors/Creator/2.4.6/resources/cocos2d-x/external/android/armeabi-v7a/libcurl.a(libcurl_la-openssl.o):openssl.c:function ossl_connect_step3: error: undefined reference to ‘OCSP_response_status_str’