Index: cmake/Modules/AddCompilerRT.cmake
===================================================================
--- cmake/Modules/AddCompilerRT.cmake
+++ cmake/Modules/AddCompilerRT.cmake
@@ -291,6 +291,12 @@
   -I${COMPILER_RT_GTEST_PATH}
 )
 
+if(COMPILER_RT_STANDALONE_BUILD)
+  # Add a dummy target to satisfy dependencies on GTest when building
+  # stand-alone. GTest itself is provided via COMPILER_RT_GTEST_SOURCES.
+  add_custom_target(gtest)
+endif()
+
 append_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 COMPILER_RT_UNITTEST_CFLAGS)
 append_list_if(COMPILER_RT_HAS_WCOVERED_SWITCH_DEFAULT_FLAG -Wno-covered-switch-default COMPILER_RT_UNITTEST_CFLAGS)