diff --git a/cmake-linux/openfst.cmake b/cmake-linux/openfst.cmake
index a68cdce..f9b359b 100644
--- a/cmake-linux/openfst.cmake
+++ b/cmake-linux/openfst.cmake
@@ -3,6 +3,16 @@
 
 set(openfst_ROOT ${LIB_BASE_DIR}/openfst-src)
 set(openfst_BUILD "${LIB_BASE_DIR}/openfst-build")
+# We can't build glog with gflags, unless gflags is pre-installed.
+# If build glog with pre-installed gflags, there will be conflict.
+include(gflags)
+if(TARGET gflags)
+    message(STATUS "${BoldGreen}Find Package gflags: ${gflags_FOUND}${ColourReset}")
+    set_target_properties(gflags PROPERTIES INTERFACE_COMPILE_OPTIONS "-fPIC")
+endif()
+set(WITH_GFLAGS OFF CACHE BOOL "whether build glog with gflags" FORCE)
+include(glog)
+
 if(REBUILD)
     message(STATUS "${BoldGreen}Install openfst: ${GLOG_BUILD_DIR}${ColourReset}")
     #./configure --prefix=${openfst_SOURCE_DIR}/build --enable-static --disable-shared --with-pic
@@ -22,16 +32,9 @@ if(REBUILD)
             COMMAND cmake --install .
             WORKING_DIRECTORY ${openfst_BUILD})
 endif()
-# We can't build glog with gflags, unless gflags is pre-installed.
-# If build glog with pre-installed gflags, there will be conflict.
+
 # gflags和glog现在被我安装到了系统盘下/usr/lib/x86_64-linux-gnu
-include(gflags)
-if(TARGET gflags)
-    message(STATUS "${BoldGreen}Find Package gflags: ${gflags_FOUND}${ColourReset}")
-    set_target_properties(gflags PROPERTIES INTERFACE_COMPILE_OPTIONS "-fPIC")
-endif()
-set(WITH_GFLAGS OFF CACHE BOOL "whether build glog with gflags" FORCE)
-include(glog)
+
 # 下面这堆关键字是防止cmake出一堆无关的提示
 if(NOT GRAPH_TOOLS)
     set(HAVE_BIN OFF CACHE BOOL "Build the fst binaries" FORCE)