Index: lib/tsan/CMakeLists.txt
===================================================================
--- lib/tsan/CMakeLists.txt
+++ lib/tsan/CMakeLists.txt
@@ -126,7 +126,7 @@
   # Build and check Go runtime.
   set(BUILDGO_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/go/buildgo.sh)
   add_custom_target(GotsanRuntimeCheck
-    COMMAND env "CC=${CMAKE_C_COMPILER} ${OSX_SYSROOT_FLAG}"
+    COMMAND env "CC=${CMAKE_C_COMPILER} ${OSX_SYSROOT_FLAG} -mmacosx-version-min=${SANITIZER_MIN_OSX_VERSION}"
             IN_TMPDIR=1 SILENT=1 ${BUILDGO_SCRIPT}
     DEPENDS tsan ${BUILDGO_SCRIPT}
     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/go