Index: config/isl.m4
===================================================================
--- config/isl.m4	(revision 194744)
+++ config/isl.m4	(working copy)
@@ -89,13 +89,13 @@ AC_DEFUN([ISL_REQUESTED],
 ]
 )
 
-# _ISL_CHECK_CT_PROG(MAJOR, MINOR)
+# _ISL_CHECK_CT_PROG(MAJOR, MINOR, REVISION)
 # --------------------------------------------
 # Helper for verifying ISL compile time version.
 m4_define([_ISL_CHECK_CT_PROG],[AC_LANG_PROGRAM(
   [#include <isl/version.h>
    #include <string.h>],
-  [if (strncmp (isl_version (), "isl-$1.$2", strlen ("isl-$1.$2")) != 0)
+  [if (strncmp (isl_version (), "isl-$1.$2.$3", strlen ("isl-$1.$2.$3")) != 0)
      return 1;
    ])])
 
@@ -115,9 +115,9 @@ AC_DEFUN([ISL_CHECK_VERSION],
     LIBS="${_isl_saved_LIBS} -lisl"
     echo $CFLAGS
 
-    AC_CACHE_CHECK([for version $1.$2 of ISL],
+    AC_CACHE_CHECK([for version $1.$2.$3 of ISL],
       [gcc_cv_isl],
-      [AC_RUN_IFELSE([_ISL_CHECK_CT_PROG($1,$2)],
+      [AC_RUN_IFELSE([_ISL_CHECK_CT_PROG($1,$2,$3)],
 	[gcc_cv_isl=yes],
 	[gcc_cv_isl=no],
 	[gcc_cv_isl=yes])])