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Re: [Xen-devel] 4.4.0-rc3 tagged



On 10/02/14 10:55, Ian Campbell wrote:
> On Fri, 2014-02-07 at 16:29 +0000, Andrew Cooper wrote:
>> On 07/02/14 16:22, Don Slutz wrote:
>>> On 02/07/14 05:05, Ian Campbell wrote:
>>>> On Thu, 2014-02-06 at 19:15 -0500, Don Slutz wrote:
>>>>>>>> cc1: warnings being treated as errors
>>>>>>>> xenlight_stubs.c: In function 'Defbool_val':
>>>>>>>> xenlight_stubs.c:344: warning: implicit declaration of function
>>>>>>>> 'CAMLreturnT'
>>>>>>>> xenlight_stubs.c:344: error: expected expression before
>>>>>>>> 'libxl_defbool'
>>>>>>>> xenlight_stubs.c: In function 'String_option_val':
>>>>>>>> xenlight_stubs.c:379: error: expected expression before 'char'
>>>>>>>> xenlight_stubs.c: In function 'aohow_val':
>>>>>>>> xenlight_stubs.c:440: error: expected expression before
>>>>>>>> 'libxl_asyncop_how'
>>>>> Any idea on what to do about ocaml issue?
>>>> My guess is that your ocaml is too old and doesn't supply CAMLreturnT.
>>>> What version do you have?
>>>>
>>>> Ian.
>>>>
>>> dcs-xen-53:~>ocaml -version
>>> The Objective Caml toplevel, version 3.09.3
>>>
>>>    -Don Slutz
>>>
>>
>> Which, according to google, was introduced in 3.09.4
>>
>> I think the ./configure script needs a min version check.
> 
> Yes, I think so too. Rob, could you advise on a suitable minimum and
> perhaps patch tools/configure.ac and/or m4/ocaml.m4 as necessary.
> 
> Also CCing Roger who added the ocaml autoconf stuff.

The Ocaml autoconf stuff was picked from http://forge.ocamlcore.org/. 
Here is an untested patch for our configure script to check for the 
minimum required OCaml version (3.09.3):

(remember to re-generate the configure script after applying)

---
commit e49609cc7b93c2633cf5a49206cb29d6bdd612be
Author: Roger Pau Monne <roger.pau@xxxxxxxxxx>
Date:   Mon Feb 10 11:54:13 2014 +0100

    tools: check OCaml version is at least 3.09.3
    
    Signed-off-by: Roger Pau Monnà <roger.pau@xxxxxxxxxx>

diff --git a/tools/configure.ac b/tools/configure.ac
index 0754f0e..6d1e2ee 100644
--- a/tools/configure.ac
+++ b/tools/configure.ac
@@ -161,6 +161,12 @@ AS_IF([test "x$ocamltools" = "xy"], [
         AS_IF([test "x$enable_ocamltools" = "xyes"], [
             AC_MSG_ERROR([Ocaml tools enabled, but unable to find Ocaml])])
         ocamltools="n"
+    ], [
+        AX_COMPARE_VERSION([$OCAMLVERSION], [lt], [3.09.4], [
+            AS_IF([test "x$enable_ocamltools" = "xyes"], [
+                AC_MSG_ERROR([Your version of OCaml: $OCAMLVERSION is not 
supported])])
+            ocamltools="n"
+        ])
     ])
 ])
 AS_IF([test "x$xsmpolicy" = "xy"], [



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