对于我的MFC应用程序，我需要将数组中的.wav数据转换为ogg vorbis格式。
我将libogg和libvorbis编译为静态库。我在项目文件夹中创建了“bin”目录，并将其放在libvorbis_static.lib和libvorbisfile_static.lib中。另外，我在bin目录中创建了libvorbis文件夹，并在其中包含了一个include文件夹，并放置了vorbis（带有codec.h，vorbisfile.h，vorbisenc.h）和ogg（带有os_types.h和ogg.h）文件夹。我将libvorbis_static.lib添加到我的项目的其他依赖项，并将bin文件夹添加到其他库目录。
当我尝试编译时，我收到错误：
1>libvorbis_static.lib(info.obj) : MSIL .netmodule or module compiled with /GL found; restarting link with /LTCG; add /LTCG to the link command line to improve linker performance
1>LINK : warning LNK4075: ignoring '/INCREMENTAL' due to '/LTCG' specification
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _free already defined in libcmtd.lib(dbgfree.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _calloc already defined in libcmtd.lib(dbgcalloc.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _malloc already defined in libcmtd.lib(dbgmalloc.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _realloc already defined in libcmtd.lib(dbgrealloc.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _memmove already defined in libcmtd.lib(memmove.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _ldexp already defined in libcmtd.lib(_ldexp_.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _qsort already defined in libcmtd.lib(qsort.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _ceil already defined in libcmtd.lib(_ceil_pentium4_.obj)
1>MSVCRT.lib(MSVCR90.dll) : error LNK2005: _exit already defined in libcmtd.lib(crt0dat.obj)
1>MSVCRT.lib(ti_inst.obj) : error LNK2005: "private: __thiscall type_info::type_info(class type_info const &)" (??0type_info@@AAE@ABV0@@Z) already defined in libcmtd.lib(typinfo.obj)
1>MSVCRT.lib(ti_inst.obj) : error LNK2005: "private: class type_info & __thiscall type_info::operator=(class type_info const &)" (??4type_info@@AAEAAV0@ABV0@@Z) already defined in libcmtd.lib(typinfo.obj)
1>LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
1>BookDoc.obj : error LNK2001: unresolved external symbol _ogg_stream_clear
1>BookDoc.obj : error LNK2001: unresolved external symbol _ogg_page_eos
1>BookDoc.obj : error LNK2001: unresolved external symbol _ogg_stream_pageout
1>BookDoc.obj : error LNK2001: unresolved external symbol _ogg_stream_flush
1>BookDoc.obj : error LNK2001: unresolved external symbol _ogg_stream_packetin
1>BookDoc.obj : error LNK2001: unresolved external symbol _ogg_stream_init
1>libvorbis_static.lib(info.obj) : error LNK2001: unresolved external symbol _oggpack_readinit
1>libvorbis_static.lib(info.obj) : error LNK2001: unresolved external symbol _oggpack_bytes
1>libvorbis_static.lib(info.obj) : error LNK2001: unresolved external symbol _oggpack_writeclear
1>libvorbis_static.lib(info.obj) : error LNK2001: unresolved external symbol _oggpack_read
1>libvorbis_static.lib(info.obj) : error LNK2001: unresolved external symbol _oggpack_reset
1>libvorbis_static.lib(info.obj) : error LNK2001: unresolved external symbol _oggpack_write
1>libvorbis_static.lib(info.obj) : error LNK2001: unresolved external symbol _oggpack_writeinit
1>libvorbis_static.lib(bitrate.obj) : error LNK2001: unresolved external symbol _oggpack_writetrunc
1>libvorbis_static.lib(bitrate.obj) : error LNK2001: unresolved external symbol _oggpack_get_buffer
1>libvorbis_static.lib(codebook.obj) : error LNK2001: unresolved external symbol _oggpack_adv
1>libvorbis_static.lib(codebook.obj) : error LNK2001: unresolved external symbol _oggpack_look
1>.\Debug/Book.exe : fatal error LNK1120: 17 unresolved externals
我很困惑。能否请你帮忙？ 感谢。
答案 0 :(得分：0)
LINK：警告LNK4098：defaultlib'MSVCRT'与使用其他lib冲突;使用/ NODEFAULTLIB：库
这与orbis无关，这是当你尝试在同一程序中链接c stdlib和MFC的C stdlib时得到的 - 只需执行编译器告诉你的操作。 或者只是将其设置为忽略libcmt / d
答案 1 :(得分：0)
检查你编译ogg-vorbis的c-runtime。如果您要静态链接，它必须与您的应用匹配。
如果您已将vorbis编译为DLL，则可能可以使用单独的c运行时（如果vorbis DLL分配的内存始终由该DLL释放，并且它是仅限c的API）。