diff -Naur rabbitmq-c-77e3805d1662034339c3c19bcdaaa62a56c1fa7e.org/cmake/GNUInstallDirs.cmake rabbitmq-c-77e3805d1662034339c3c19bcdaaa62a56c1fa7e.sw/cmake/GNUInstallDirs.cmake
--- rabbitmq-c-77e3805d1662034339c3c19bcdaaa62a56c1fa7e.org/cmake/GNUInstallDirs.cmake	2022-09-15 16:18:17.330000000 +0800
+++ rabbitmq-c-77e3805d1662034339c3c19bcdaaa62a56c1fa7e.sw/cmake/GNUInstallDirs.cmake	2022-09-15 16:24:17.630000000 +0800
@@ -108,7 +108,7 @@
           "Please enable at least one language before including GNUInstallDirs.")
       else()
         if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
-          set(_LIBDIR_DEFAULT "lib64")
+          set(_LIBDIR_DEFAULT "lib")
         endif()
       endif()
     endif()