Set the version for the libraries

When building packaged shared libraries for use, having the version
set makes it so that the soname is set correctly for parallel installation.

This change is derived from the one used for the Fedora gtest package.
Signed-off-by: Neal Gompa <ngompa13@gmail.com>

googlemock/CMakeLists.txt

@@ -100,8 +100,10 @@ if (MSVC)
 else()
   cxx_library(gmock "${cxx_strict}" src/gmock-all.cc)
   target_link_libraries(gmock PUBLIC gtest)
+  set_target_properties(gmock PROPERTIES VERSION ${GOOGLETEST_VERSION})
   cxx_library(gmock_main "${cxx_strict}" src/gmock_main.cc)
   target_link_libraries(gmock_main PUBLIC gmock)
+  set_target_properties(gmock_main PROPERTIES VERSION ${GOOGLETEST_VERSION})
 endif()
 # If the CMake version supports it, attach header directory information
 # to the targets for when we are part of a parent build (ie being pulled

googletest/CMakeLists.txt

@@ -126,7 +126,9 @@ include_directories(${gtest_build_include_dirs})
 # are used for other targets, to ensure that gtest can be compiled by a user
 # aggressive about warnings.
 cxx_library(gtest "${cxx_strict}" src/gtest-all.cc)
+set_target_properties(gtest PROPERTIES VERSION ${GOOGLETEST_VERSION})
 cxx_library(gtest_main "${cxx_strict}" src/gtest_main.cc)
+set_target_properties(gtest_main PROPERTIES VERSION ${GOOGLETEST_VERSION})
 # If the CMake version supports it, attach header directory information
 # to the targets for when we are part of a parent build (ie being pulled
 # in via add_subdirectory() rather than being a standalone build).