Tests fail under Fedora Rawhide with USE_SHARED_LIBS=ON

[mikhirev]

When configured with -DUSE_SHARED_LIBS=ON, most tests fail under Fedora Rawhide (gcc 7.0.1). I was unable to capture/redirect extra output with exact error messages (invalid pointer, double free etc.) and memory maps.

I suppose, the problem is in gmock. From documentation:

Google Mock can be used as a DLL, but the same DLL must contain Google Test as well.

But there are separate libgtest.so, libgtest_main.so, libmock.so and libmock_main.so. Probably it is better to always link gmock and gtest statically to avoid this issue.

P. S. I removed igtl::Array<T>::GetValue() and igtl::Array<T>::SetValue() from igtlNDArrayMessage.h to get it built with gcc 7 (see #120).

[leochan2009]

Thanks a lot !!!
Just made the google test a static build.
Now i am checking the travis and appveyor build results

[leochan2009]

Hi mikhirev,
in my forked branch, i have made the google test a static build .
However, i still need to fix some compiler setting errors for windows OS,
you could take my fork repository at https://github.com/leochan2009/OpenIGTLink.git
branch: master.
Then the test error should be fixed.
I will come back to windows OS build issue ASAP,

Thanks a lot,
Longquan