invalid use of incomplete type ‘std::ifstream in readNodeFile

[kyungsoo hong]

Hi,

I tried with 
FIND_PACKAGE(OpenThreads)
but it failed to find package.

/etc/ld.so.conf.d/openscenegraph.conf already exist 
with "/usr/local/lib64"

of course /usr/loca/lib64/ there are all so filese




... 

Thank you!

Cheers,
kyungsoo

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