diff --git a/CMakeLists.txt b/CMakeLists.txt
index f40aff2..241fad3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,7 +32,7 @@
   string(APPEND EXTCPPFLAGS " --sysroot=${CMAKE_SYSROOT}")
 endif()
 if(LLVM_ENABLE_PIC)
-  string(APPEND EXTCPPFLAGS " -fPIC")
+  string(APPEND EXTCPPFLAGS " -fPIC -DPIC")
 endif()
 set(EXTLDFLAGS "LDFLAGS=-L${EXTLIBDIR}")
 set(EXTCC "CC=${CMAKE_C_COMPILER}" "CXX=${CMAKE_CXX_COMPILER}")