今天加入MPEG4IP静态库的应用程序，在编译阶段没有错误，可在连接阶段却现了错误，错误如下：

BUILD: [Thrd:Sequence:Type  ] Message
BUILD: [01:0000000138:ERRORE] libmp4v2.lib(atom_udta.obj) : error LNK2001: unresolved external symbol htonl
BUILD: [01:0000000139:ERRORE] libmp4v2.lib(atom_hnti.obj) : error LNK2001: unresolved external symbol htonl
BUILD: [01:0000000140:ERRORE] libmp4v2.lib(atom_sound.obj) : error LNK2001: unresolved external symbol htonl
BUILD: [01:0000000141:ERRORE] libmp4v2.lib(rtphint.obj) : error LNK2001: unresolved external symbol htonl
BUILD: [01:0000000142:ERRORE] libmp4v2.lib(mp4atom.obj) : error LNK2001: unresolved external symbol htonl
BUILD: [01:0000000143:ERRORE] libmp4v2.lib(atom_standard.obj) : error LNK2001: unresolved external symbol htonl
BUILD: [01:0000000144:ERRORE] libmp4v2.lib(atom_meta.obj) : error LNK2001: unresolved external symbol htonl
BUILD: [01:0000000145:ERRORE] libmp4v2.lib(mp4.obj) : error LNK2019: unresolved external symbol htonl referenced in function MP4GetVideoProfileLevel
BUILD: [01:0000000146:ERRORE] libmp4v2.lib(mp4file.obj) : error LNK2001: unresolved external symbol htonl
BUILD: [01:0000000147:ERRORE] libmp4v2.lib(mp4track.obj) : error LNK2001: unresolved external symbol htonl
BUILD: [01:0000000148:ERRORE] libmp4v2.lib(isma.obj) : error LNK2001: unresolved external symbol htonl
BUILD: [01:0000000149:ERRORE] libmp4v2.lib(rtphint.obj) : error LNK2019: unresolved external symbol htons referenced in function "public: void __cdecl MP4RtpHintTrack::ReadPacket(unsigned short,unsigned char * *,unsigned int *,unsigned int,bool,bool)" (?ReadPacket@MP4RtpHintTrack@@QAAXGPAPAEPAII_N2@Z)
BUILD: [01:0000000150:ERRORE] obj\ARMV4I\retail\MyDump.dll : fatal error LNK1120: 2 unresolved externals

看起中的ReadPacket显然与网络有关，弄了将近一个小时，原来是没有加入“ws2.lib"所致，加入后，编译链接OK

该库对应ws2_32.dll，提供了对以下网络相关API的支持，若使用其中的API，则应该将ws2_32.lib加入工程（否则需要动态载入ws2_32.dll）。