THRIFT-3155 move contrib/mingw32-toolchain.cmake to build/cmake/
diff --git a/compiler/cpp/README.md b/compiler/cpp/README.md
index b4a159f..2c0a67c 100644
--- a/compiler/cpp/README.md
+++ b/compiler/cpp/README.md
@@ -20,7 +20,7 @@
 ### Cross compile using mingw32 and generate a Windows Installer with CPack
 
     mkdir build_mingw32 && cd build_mingw32
-    cmake -DCMAKE_TOOLCHAIN_FILE=../../../contrib/mingw32-toolchain.cmake ..
+    cmake -DCMAKE_TOOLCHAIN_FILE=../build/cmake/mingw32-toolchain.cmake ..
     cpack
 
 ## Build on windows