diff --git a/CMakeLists.txt b/CMakeLists.txt
index 41fb21f5e54c..48c1ac040f26 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -283,6 +283,9 @@ if(UNIX OR MINGW OR CYGWIN)
     if(NOT USE_OPENMP)
         SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-pragmas -Wno-unused-private-field")
     endif()
+    if(__BUILD_FOR_R AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+        SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-cast-function-type")
+    endif()
 endif()
 
 if(WIN32 AND MINGW)