building usd with namespace lacks some classes

[iqch]

some our houdini plug-ins built against usd libraries with namespaces cries about next issues.
undefined symbol: _ZTI19VtStreamOutIterator

buiding against non-namespace using usd libraries doesn't produce such troubles and work fine.

we link those plug-ins with such cmake instruction
link_libraries(
HoudiniAPPS2 HoudiniGEO HoudiniPRM
HoudiniOP1 HoudiniOP2 HoudiniOP3 HoudiniOPZ
ar usd usdGeom tf sdf pcp arch)

CentOS7 x64, Houdini16.0.504.20
usd v0.7.4

[jtran56]

Filed as internal issue #144791.

[sunyab]

@iqch: Since the undefined symbol is not in a namespace, it looks like your Houdini plugin build is not getting the right namespace-wrapped code when you include the USD headers. This should be fixed if you add -DPXR_USE_NAMESPACES when you build your Houdini plugin. Can you give that a try?

This is needed right now because the namespaces aren't enabled by default in USD. Once we switch them on by default, you shouldn't need to specify any extra defines to build against the namespace-enabled USD.

[sunyab]

Closing out old issue, please let us know if you're still running into problems here. Thanks!