Purpose: Add SOVERSION to shared object
Forward: https://github.com/facebookincubator/gloo/issues/116

--- a/gloo/CMakeLists.txt
+++ b/gloo/CMakeLists.txt
@@ -134,6 +134,7 @@
 configure_file(config.h.in config.h)
 
 add_library(gloo ${GLOO_STATIC_OR_SHARED} ${GLOO_SRCS})
+set_target_properties(gloo PROPERTIES VERSION ${GLOO_VERSION} SOVERSION ${GLOO_VERSION_MAJOR})
 if(USE_CUDA)
   cuda_add_library(gloo_cuda ${GLOO_CUDA_SRCS} ${GLOO_STATIC_OR_SHARED})
   target_link_libraries(gloo_cuda gloo ${gloo_cuda_DEPENDENCY_LIBS})
--- a/gloo/test/CMakeLists.txt
+++ b/gloo/test/CMakeLists.txt
@@ -25,7 +25,7 @@
 endif()
 
 add_executable(gloo_test ${GLOO_TEST_SRCS})
-target_link_libraries(gloo_test gloo gtest ${GLOO_TEST_LIBRARIES})
+target_link_libraries(gloo_test gloo gtest ${GLOO_TEST_LIBRARIES} pthread)
 
 if(MSVC AND USE_LIBUV)
   add_custom_command(TARGET gloo_test POST_BUILD