--- a/m4/ax_llvm.m4.orig	2017-07-12 02:48:46.000000000 +0800
+++ b/m4/ax_llvm.m4	2018-01-28 09:04:09.440224026 +0800
@@ -97,8 +97,7 @@
                 ]]
               )
             ],
-            ax_cv_llvm=yes,
-            ax_cv_llvm=no
+            ax_cv_llvm=yes
           )
           AC_LANG_POP([C++])
         ]
@@ -111,8 +110,10 @@
       LDFLAGS="$LDFLAGS_SAVED"
       if test "x$shared_mode" = "xstatic"; then
         AC_MSG_NOTICE([Using static LLVM libraries.])
+        succeeded=yes
       elif test "x$shared_mode" = "xshared"; then
         AC_MSG_NOTICE([Using shared LLVM libraries.  Setting -rpath to $rpath.])
+        succeeded=yes
       else
         AC_MSG_ERROR([Could not determine whether to use shared or static LLVM libraries])
       fi