Build error on fedora 30: clang-8: error: no such file or directory: 'external.googletest/lib/libgtest.a' about libprotobuf-mutator HOT 1 CLOSED

--- a/cmake/external/googletest.cmake
+++ b/cmake/external/googletest.cmake
@@ -25,12 +25,12 @@ set(GTEST_BOTH_LIBRARIES ${GTEST_LIBRARIES} ${GTEST_MAIN_LIBRARIES})
 foreach(lib IN LISTS GTEST_BOTH_LIBRARIES)
   if (MSVC)
     if (CMAKE_BUILD_TYPE MATCHES Debug)
-      set(LIB_PATH ${GTEST_INSTALL_DIR}/lib/${lib}d.lib)
+      set(LIB_PATH ${GTEST_INSTALL_DIR}/lib64/${lib}d.lib)
     else()
-      set(LIB_PATH ${GTEST_INSTALL_DIR}/lib/${lib}.lib)
+      set(LIB_PATH ${GTEST_INSTALL_DIR}/lib64/${lib}.lib)
     endif()
   else()
-    set(LIB_PATH ${GTEST_INSTALL_DIR}/lib/lib${lib}.a)
+    set(LIB_PATH ${GTEST_INSTALL_DIR}/lib64/lib${lib}.a)
   endif()
   list(APPEND GTEST_BUILD_BYPRODUCTS ${LIB_PATH})
 
--- a/cmake/external/protobuf.cmake
+++ b/cmake/external/protobuf.cmake
@@ -31,9 +31,9 @@ ENDIF()
 
 foreach(lib ${PROTOBUF_LIBRARIES})
   if (MSVC)
-    set(LIB_PATH ${PROTOBUF_INSTALL_DIR}/lib/lib${lib}.lib)
+    set(LIB_PATH ${PROTOBUF_INSTALL_DIR}/lib64/lib${lib}.lib)
   else()
-    set(LIB_PATH ${PROTOBUF_INSTALL_DIR}/lib/lib${lib}.a)
+    set(LIB_PATH ${PROTOBUF_INSTALL_DIR}/lib64/lib${lib}.a)
   endif()
   list(APPEND PROTOBUF_BUILD_BYPRODUCTS ${LIB_PATH})