Comment 2 for bug 1495459

OK, it looks like selecting the X11 lib is the problem, not probing it...

$ LD_PRELOAD=libumockdev-preload.so.0 bin/mir_integration_tests --gtest_filter=MesaBufferIntegration.* --platform-graphics-lib lib/server-modules/server-mesa-x11.so.5
MIR_CLIENT_PLATFORM_PATH=bin/../lib/client-modules/
MIR_SERVER_PLATFORM_PATH=bin/../lib/server-modules/
LD_LIBRARY_PATH=bin/../lib
exec=bin/mir_integration_tests.bin
Running main() from main.cpp
Note: Google Test filter = MesaBufferIntegration.*
[==========] Running 3 tests from 1 test case.
[----------] Global test environment set-up.
[----------] 3 tests from MesaBufferIntegration
[ RUN ] MesaBufferIntegration.buffer_creation_from_arbitrary_thread_works
Segmentation fault (core dumped)