[infra] Added comment for GTest (#9430)

Added comment for GTest. Handling GTest is different from other package so this comment explains about that.

Signed-off-by: Hyun Sik Yoon <hyunsik.yoon@samsung.com>

diff --git a/infra/cmake/packages/GTestConfig.cmake b/infra/cmake/packages/GTestConfig.cmake
index 1d56814..87eb8d5 100644 (file)
--- a/infra/cmake/packages/GTestConfig.cmake
+++ b/infra/cmake/packages/GTestConfig.cmake
@@ -21,6 +21,9 @@ endfunction(_GTest_build)
 _GTest_build()
 
 ### Find and use pre-installed Google Test
+# Note: cmake supports GTest and does not find GTestConfig.cmake or GTest-config.cmake.
+# Refer to "https://cmake.org/cmake/help/v3.5/module/FindGTest.html"
+# find_package(GTest) creates options like GTEST_FOUND, not GTest_FOUND.
 find_package(GTest)
 find_package(Threads)