Compiling a dll with g++

Question

我一直在尝试用g++在windows上编译这个项目:https://github.com/newhouseb/openvr-c

我的命令行:

g++ -c  -std=gnu++0x -DBUILDING_OPENVR_C openvr_c.cpp openvr_c.h
g++ -shared -o openvr_c.dll openvr_c.o  -std=gnu++0x -Wl,--out-implib,openvr_api.dll -L. -lopenvr_api

当我运行第二行我得到这些错误:

openvr_c.o: openvr_c.cpp:(美元。text _ZN2vr14COpenVRContext10CheckClearEv [__ZN2vr14COpenVRContext10CheckClearEv] + 0 x12):对_imp__VR_GetInitToken' openvr_c.o:openvr_c.cpp:(.text$_ZN2vr14COpenVRContext10CheckClearEv[__ZN2vr14COpenVRContext10CheckClearEv]+0x33): undefined reference to的未定义引用openvr_c.o: openvr_c.cpp:(美元。text _ZN2vr14COpenVRContext8VRSystemEv [__ZN2vr14COpenVRContext8VRSystemEv] + 0 x2b):对_imp__VR_GetGenericInterface' openvr_c.o:openvr_c.cpp:(.text$_ZN2vr14COpenVRContext11VRChaperoneEv[__ZN2vr14COpenVRContext11VRChaperoneEv]+0x2c): undefined reference to _imp__VR_GetGenericInterface的未定义引用openvr_c.o: openvr_c.cpp:(美元。text _ZN2vr14COpenVRContext16VRChaperoneSetupEv [__ZN2vr14COpenVRContext16VRChaperoneSetupEv] + 0 x2c):对_imp__VR_GetGenericInterface' openvr_c.o:openvr_c.cpp:(.text$_ZN2vr14COpenVRContext12VRCompositorEv[__ZN2vr14COpenVRContext12VRCompositorEv]+0x2c): undefined reference to _imp__VR_GetGenericInterface的未定义引用openvr_c.o: openvr_c.cpp:(美元。text _ZN2vr14COpenVRContext9VROverlayEv [__ZN2vr14COpenVRContext9VROverlayEv] + 0 x2c):对_imp__VR_GetGenericInterface' openvr_c.o:openvr_c.cpp:(.text$_ZN2vr14COpenVRContext14VRRenderModelsEv[__ZN2vr14COpenVRContext14VRRenderModelsEv]+0x2c): more undefined references to _imp__VR_GetGenericInterface的未定义引用如下openvr_c.o: openvr_c.cpp:(美元。text _ZN2vr7VR_InitEPNS_12EVRInitErrorENS_18EVRApplicationTypeE [__ZN2vr7VR_InitEPNS_12EVRInitErrorENS_18EVRApplicationTypeE] + 0 x23): _imp__VR_InitInternal' openvr_c.o:openvr_c.cpp:(.text$_ZN2vr7VR_InitEPNS_12EVRInitErrorENS_18EVRApplicationTypeE[__ZN2vr7VR_InitEPNS_12EVRInitErrorENS_18EVRApplicationTypeE]+0x4c): undefined reference to_imp__vr_isinterfaceversionvalid的未定义引用openvr_c.o: openvr_c.cpp:(美元。text _ZN2vr7VR_InitEPNS_12EVRInitErrorENS_18EVRApplicationTypeE [__ZN2vr7VR_InitEPNS_12EVRInitErrorENS_18EVRApplicationTypeE] + 0 x61): _imp__VR_ShutdownInternal' openvr_c.o:openvr_c.cpp:(.text$_ZN2vr11VR_ShutdownEv[__ZN2vr11VR_ShutdownEv]+0x7): undefined reference to_imp__vr_shutdowninternal ' collect2.exe:错误:ld返回1退出状态

我不明白这些错误是什么，

谁能开导我一下?

Answer 1

这看起来像来自您的链接器的许多错误。确保正确地链接到依赖项。

什么是未定义的引用/未解析的外部符号错误，我如何修复它?