Handle 'none required' result from AC_SEARCH_LIBS

diff --git a/configure.ac b/configure.ac
index 81bf59648fa537c3710de88a5893e7a47861203f..8de2535b674ebf4191368449d0dca38747a73238 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -243,7 +243,9 @@ if test "x$enable_numa" = xno; then
 else
   AC_SEARCH_LIBS([dlopen], [dl], [],
     [AC_MSG_ERROR([dynamic linking unavailable, circumvent with --disable-numa])])
-  DL_LIB="$ac_cv_search_dlopen"
+  if test "x$ac_cv_search_dlopen" != "xnone required"; then
+    DL_LIB="$ac_cv_search_dlopen"
+  fi
 fi
 AC_SUBST([DL_LIB])