Add include dirs to targets if CMake version supports it

googlemock/CMakeLists.txt

@@ -92,6 +92,14 @@ cxx_library(gmock_main
             src/gmock-all.cc
             src/gmock_main.cc)
 
+# 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).
+if (DEFINED CMAKE_VERSION AND NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11")
+  target_include_directories(gmock      INTERFACE "${gmock_SOURCE_DIR}/include")
+  target_include_directories(gmock_main INTERFACE "${gmock_SOURCE_DIR}/include")
+endif()
+
 ########################################################################
 #
 # Google Mock's own tests.

googletest/CMakeLists.txt

@@ -91,6 +91,14 @@ cxx_library(gtest "${cxx_strict}" src/gtest-all.cc)
 cxx_library(gtest_main "${cxx_strict}" src/gtest_main.cc)
 target_link_libraries(gtest_main gtest)
 
+# 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).
+if (DEFINED CMAKE_VERSION AND NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11")
+  target_include_directories(gtest      INTERFACE "${gtest_SOURCE_DIR}/include")
+  target_include_directories(gtest_main INTERFACE "${gtest_SOURCE_DIR}/include")
+endif()
+
 ########################################################################
 #
 # Install rules