diff --git a/compiler-rt/CMakeLists.txt b/compiler-rt/CMakeLists.txt
--- a/compiler-rt/CMakeLists.txt
+++ b/compiler-rt/CMakeLists.txt
@@ -182,7 +182,20 @@
 pythonize_bool(COMPILER_RT_DEBUG)
 
 option(COMPILER_RT_INTERCEPT_LIBDISPATCH
-  "Support interception of libdispatch (GCD). Requires '-fblocks'." OFF)
+  "Support interception of libdispatch (GCD). Requires '-fblocks'" OFF)
+option(COMPILER_RT_BLOCKS_RUNTIME_LIBRARY_PATH
+  "Library search path for blocks runtime (-lBlocksRuntime)" "")
+option(COMPILER_RT_LIBDISPATCH_LIBRARY_PATH
+  "Library search path for libdispatch (-ldispatch)" "")
+if (COMPILER_RT_INTERCEPT_LIBDISPATCH)
+  set(COMPILER_RT_INTERCEPT_LIBDISPATCH_CFLAGS -fblocks)
+  set(COMPILER_RT_INTERCEPT_LIBDISPATCH_LINK_FLAGS)
+  append_list_if(COMPILER_RT_BLOCKS_RUNTIME_LIBRARY_PATH -L${COMPILER_RT_BLOCKS_RUNTIME_LIBRARY_PATH}
+      COMPILER_RT_INTERCEPT_LIBDISPATCH_LINK_FLAGS)
+  append_list_if(COMPILER_RT_LIBDISPATCH_LIBRARY_PATH -L${COMPILER_RT_LIBDISPATCH_LIBRARY_PATH}
+      COMPILER_RT_INTERCEPT_LIBDISPATCH_LINK_FLAGS)
+  list(APPEND COMPILER_RT_INTERCEPT_LIBDISPATCH_LINK_FLAGS -lBlocksRuntime -ldispatch)
+endif()
 if (APPLE) # Always enable on Apple platforms.
   set(COMPILER_RT_INTERCEPT_LIBDISPATCH ON)
 endif()
diff --git a/compiler-rt/lib/tsan/CMakeLists.txt b/compiler-rt/lib/tsan/CMakeLists.txt
--- a/compiler-rt/lib/tsan/CMakeLists.txt
+++ b/compiler-rt/lib/tsan/CMakeLists.txt
@@ -72,10 +72,7 @@
 
 if(COMPILER_RT_INTERCEPT_LIBDISPATCH)
   list(APPEND TSAN_SOURCES rtl/tsan_libdispatch.cc)
-  # Libdispatch support for non-Apple platforms requires '-fblocks'.
-  if (NOT APPLE)
-    list(APPEND TSAN_RTL_CFLAGS "-fblocks")
-  endif()
+  list(APPEND TSAN_RTL_CFLAGS ${COMPILER_RT_INTERCEPT_LIBDISPATCH_CFLAGS})
 endif()
 
 set(TSAN_HEADERS
@@ -252,7 +249,7 @@
     set(LIBCXX_PREFIX ${CMAKE_CURRENT_BINARY_DIR}/libcxx_tsan_${arch})
     add_custom_libcxx(libcxx_tsan_${arch} ${LIBCXX_PREFIX}
       DEPS ${TSAN_RUNTIME_LIBRARIES}
-      CFLAGS ${TARGET_CFLAGS} -fsanitize=thread
+      CFLAGS ${TARGET_CFLAGS} -fsanitize=thread ${COMPILER_RT_INTERCEPT_LIBDISPATCH_LINK_FLAGS}
       USE_TOOLCHAIN)
     list(APPEND libcxx_tsan_deps libcxx_tsan_${arch}-build)
   endforeach()
diff --git a/compiler-rt/lib/tsan/tests/CMakeLists.txt b/compiler-rt/lib/tsan/tests/CMakeLists.txt
--- a/compiler-rt/lib/tsan/tests/CMakeLists.txt
+++ b/compiler-rt/lib/tsan/tests/CMakeLists.txt
@@ -45,6 +45,7 @@
 else()
   list(APPEND LINK_FLAGS -fsanitize=thread)
   list(APPEND LINK_FLAGS -lm)
+  list(APPEND LINK_FLAGS ${COMPILER_RT_INTERCEPT_LIBDISPATCH_LINK_FLAGS})
 endif()
 
 set(TSAN_RTL_HEADERS)