xen 4.2.0-rc3-pre: building failure on alpine linux / uclibc

xen 4.2.0-rc3-pre: building failure on alpine linux / uclibc

[Mark van Dijk]

After someone suggested alpine linux makes a nice dom0 system I decided
to give it a go. Unfortunately the build process breaks:

---
  AR    i386-dm/libqemu.a
  LINK  i386-dm/qemu-dm
vl.o: In function `dynticks_stop_timer':
/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir/vl.c:1603:
undefined reference to `timer_delete' vl.o: In function
`dynticks_start_timer': /adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir/vl.c:1585:
undefined reference to `timer_create' vl.o: In function
`dynticks_rearm_timer': /adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir/vl.c:1620:
undefined reference to
`timer_gettime' /adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir/vl.c:1633:
undefined reference to `timer_settime' collect2: ld returned 1 exit
status make[4]: *** [qemu-dm] Error 1 make[4]: Leaving directory
`/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir-remote/i386-dm'
make[3]: *** [subdir-i386-dm] Error 2 make[3]: Leaving directory
`/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir-remote'
make[2]: *** [subdir-install-qemu-xen-traditional-dir] Error 2 make[2]:
Leaving directory `/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools'
make[1]: *** [subdirs-install] Error 2 make[1]: Leaving directory
`/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools' make: ***
[install-tools] Error 2 ---

I found this bug occurred to someone back in february '12 when someone
posted the following message and patch to the ML:

http://lists.xen.org/archives/html/xen-devel/2012-02/msg01475.html

But I am either not patching the correct file or this patch is not
working. I was trying a couple of different solutions just to see how I
could get it to work but I'll admit this is like doing rocket science
as a third grader. This is what I tried next to the previously named
patch:

http://pastebin.com/U39H38T7

But the end result:

---
  LINK  qemu-ga
  CC    libdis/i386-dis.o
  LINK  qemu-nbd
cutils.o: In function `strtosz_suffix_unit':
/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-dir/cutils.c:354:
undefined reference to `__isnan'
/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-dir/cutils.c:357:
undefined reference to `modf'
collect2: ld returned 1 exit status
make[3]: *** [qemu-ga] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: Leaving directory
`/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-dir-remote'
make[2]: *** [subdir-all-qemu-xen-dir] Error 2
make[2]: Leaving directory
`/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools'
make[1]: *** [subdirs-install] Error 2
make[1]: Leaving directory
`/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools'
make: *** [install-tools] Error 2
---

Where do I go from here?

-- 
Stay in touch,
Mark van Dijk.               ,--------------------------------
----------------------------'        Fri Aug 10 09:29 UTC 2012
Today is Boomtime, the 3rd day of Bureaucracy in the YOLD 3178

Re: xen 4.2.0-rc3-pre: building failure on alpine linux / uclibc

[Stefano Stabellini]

Roger should have a better idea than me but he is currently on vacation.

On Fri, 10 Aug 2012, Mark van Dijk wrote:
> After someone suggested alpine linux makes a nice dom0 system I decided
> to give it a go. Unfortunately the build process breaks:
> 
> ---
>   AR    i386-dm/libqemu.a
>   LINK  i386-dm/qemu-dm
> vl.o: In function `dynticks_stop_timer':
> /adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir/vl.c:1603:
> undefined reference to `timer_delete' vl.o: In function
> `dynticks_start_timer': /adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir/vl.c:1585:
> undefined reference to `timer_create' vl.o: In function
> `dynticks_rearm_timer': /adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir/vl.c:1620:
> undefined reference to
> `timer_gettime' /adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir/vl.c:1633:
> undefined reference to `timer_settime' collect2: ld returned 1 exit
> status make[4]: *** [qemu-dm] Error 1 make[4]: Leaving directory
> `/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir-remote/i386-dm'
> make[3]: *** [subdir-i386-dm] Error 2 make[3]: Leaving directory
> `/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-traditional-dir-remote'
> make[2]: *** [subdir-install-qemu-xen-traditional-dir] Error 2 make[2]:
> Leaving directory `/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools'
> make[1]: *** [subdirs-install] Error 2 make[1]: Leaving directory
> `/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools' make: ***
> [install-tools] Error 2 ---
> 
> I found this bug occurred to someone back in february '12 when someone
> posted the following message and patch to the ML:
> 
> http://lists.xen.org/archives/html/xen-devel/2012-02/msg01475.html
> 
> But I am either not patching the correct file or this patch is not
> working. I was trying a couple of different solutions just to see how I
> could get it to work but I'll admit this is like doing rocket science
> as a third grader. This is what I tried next to the previously named
> patch:
> 
> http://pastebin.com/U39H38T7
> 
> But the end result:
> 
> ---
>   LINK  qemu-ga
>   CC    libdis/i386-dis.o
>   LINK  qemu-nbd
> cutils.o: In function `strtosz_suffix_unit':
> /adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-dir/cutils.c:354:
> undefined reference to `__isnan'
> /adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-dir/cutils.c:357:
> undefined reference to `modf'
> collect2: ld returned 1 exit status
> make[3]: *** [qemu-ga] Error 1
> make[3]: *** Waiting for unfinished jobs....
> make[3]: Leaving directory
> `/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools/qemu-xen-dir-remote'
> make[2]: *** [subdir-all-qemu-xen-dir] Error 2
> make[2]: Leaving directory
> `/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools'
> make[1]: *** [subdirs-install] Error 2
> make[1]: Leaving directory
> `/adm/anderson/xen-unstable/src/xen-git-4.2.0/tools'
> make: *** [install-tools] Error 2
> ---
> 
> Where do I go from here?

This is upstream QEMU that is breaking, not qemu-xen-traditional (see
the code path: qemu-xen-dir-remote instead of
qemu-xen-traditional-dir-remote). Moreover it is breaking compiling
qemu-nbd that we aren't currently using.
I would try out the following change to the configure script:


diff --git a/configure b/configure
index 027a718..9cc8e19 100755
--- a/configure
+++ b/configure
@@ -2614,11 +2613,7 @@ cat > $TMPC <<EOF
 int main(void) { return clock_gettime(CLOCK_REALTIME, NULL); }
 EOF
 
-if compile_prog "" "" ; then
-  :
-elif compile_prog "" "-lrt" ; then
-  LIBS="-lrt $LIBS"
-fi
+LIBS="-lrt -lm $LIBS"
 
 if test "$darwin" != "yes" -a "$mingw32" != "yes" -a "$solaris" != yes -a \
         "$aix" != "yes" -a "$haiku" != "yes" ; then

Re: xen 4.2.0-rc3-pre: building failure on alpine linux / uclibc

[Mark van Dijk]

> This is upstream QEMU that is breaking, not qemu-xen-traditional (see
> the code path: qemu-xen-dir-remote instead of
> qemu-xen-traditional-dir-remote).

Ah, I didn't know, it's a little bit confusing. Would you like me to
submit a bug report with them?

> Moreover it is breaking compiling qemu-nbd that we aren't currently
> using. I would try out the following change to the configure script:
> (..snip..)

Yes, that works, thanks! But it gives a new error which I couldn't
solve yet:

---
LINK  qemu-nbd

cutils.o: In function `strtosz_suffix_unit':

tools/qemu-xen-dir/cutils.c:354: undefined reference to
`__isnan'

tools/qemu-xen-dir/cutils.c:357: undefined reference to `modf'
collect2: ld returned 1 exit status
---

Any idea there?

Also -- If we're not using qemu-nbd then could you suggest a
workaround please? I'd prefer something that can be patched or
issued before I run the make process. (I run the make process
twice now - if the first run fails, patch, then run again and if it
fails again error out)

Thanks so far,
Mark

-- 
Stay in touch,
Mark van Dijk.               ,--------------------------------
----------------------------'        Fri Aug 10 12:02 UTC 2012
Today is Boomtime, the 3rd day of Bureaucracy in the YOLD 3178

Re: xen 4.2.0-rc3-pre: building failure on alpine linux / uclibc

[Stefano Stabellini]

On Fri, 10 Aug 2012, Mark van Dijk wrote:
> > This is upstream QEMU that is breaking, not qemu-xen-traditional (see
> > the code path: qemu-xen-dir-remote instead of
> > qemu-xen-traditional-dir-remote).
> 
> Ah, I didn't know, it's a little bit confusing. Would you like me to
> submit a bug report with them?
> 
> > Moreover it is breaking compiling qemu-nbd that we aren't currently
> > using. I would try out the following change to the configure script:
> > (..snip..)
> 
> Yes, that works, thanks! But it gives a new error which I couldn't
> solve yet:
> 
> ---
> LINK  qemu-nbd
> 
> cutils.o: In function `strtosz_suffix_unit':
> 
> tools/qemu-xen-dir/cutils.c:354: undefined reference to
> `__isnan'
> 
> tools/qemu-xen-dir/cutils.c:357: undefined reference to `modf'
> collect2: ld returned 1 exit status
> ---
> 
> Any idea there?

It is another "-lm" missing somewhere.


> Also -- If we're not using qemu-nbd then could you suggest a
> workaround please? I'd prefer something that can be patched or
> issued before I run the make process. (I run the make process
> twice now - if the first run fails, patch, then run again and if it
> fails again error out)

You can disable qemu-nbd altogether with the following patch:


diff --git a/configure b/configure
index 027a718..f05d3c5 100755
--- a/configure
+++ b/configure
@@ -2993,12 +2988,6 @@ if test "$softmmu" = yes ; then
       virtfs=no
     fi
   fi
-  if [ "$linux" = "yes" -o "$bsd" = "yes" -o "$solaris" = "yes" ] ; then
-      tools="qemu-nbd\$(EXESUF) $tools"
-    if [ "$guest_agent" = "yes" ]; then
-      tools="qemu-ga\$(EXESUF) $tools"
-    fi
-  fi
 fi
 if test "$smartcard_nss" = "yes" ; then
   tools="vscclient\$(EXESUF) $tools"

Re: xen 4.2.0-rc3-pre: building failure on alpine linux / uclibc

[Internecto List Subscriber]

On Fri, 10 Aug 2012 13:16:12 +0100
Stefano Stabellini <stefano.stabellini@eu.citrix.com> wrote:

> On Fri, 10 Aug 2012, Mark van Dijk wrote:
> > > This is upstream QEMU that is breaking, not qemu-xen-traditional
> > > (see the code path: qemu-xen-dir-remote instead of
> > > qemu-xen-traditional-dir-remote).
> > 
> > Ah, I didn't know, it's a little bit confusing. Would you like me to
> > submit a bug report with them?
> > 
> > > Moreover it is breaking compiling qemu-nbd that we aren't
> > > currently using. I would try out the following change to the
> > > configure script: (..snip..)
> > 
> > Yes, that works, thanks! But it gives a new error which I couldn't
> > solve yet:
> > 
> > ---
> > LINK  qemu-nbd
> > 
> > cutils.o: In function `strtosz_suffix_unit':
> > 
> > tools/qemu-xen-dir/cutils.c:354: undefined reference to
> > `__isnan'
> > 
> > tools/qemu-xen-dir/cutils.c:357: undefined reference to `modf'
> > collect2: ld returned 1 exit status
> > ---
> > 
> > Any idea there?
> 
> It is another "-lm" missing somewhere.

Ok, well I'll leave that to the people who can actually make a healthy
patch out of this.

> 
> 
> > Also -- If we're not using qemu-nbd then could you suggest a
> > workaround please? I'd prefer something that can be patched or
> > issued before I run the make process. (I run the make process
> > twice now - if the first run fails, patch, then run again and if it
> > fails again error out)
> 
> You can disable qemu-nbd altogether with the following patch:
> (..snip..)

While I couldn't find the proper configure script for this (I even
grepped for stuff like 'virtfs=no' but got nothing), it was a good
starting point. So thanks for pointing me in the right direction :)

For now building unstable on Alpine Linux works with the following
patch:

http://pastebin.com/QU8XuM0a



-- 
Stay in touch,
Mark van Dijk.               ,--------------------------------
----------------------------'        Fri Aug 10 13:48 UTC 2012
Today is Boomtime, the 3rd day of Bureaucracy in the YOLD 3178

Re: xen 4.2.0-rc3-pre: building failure on alpine linux / uclibc

[Roger Pau Monne]

Internecto List Subscriber wrote:
> On Fri, 10 Aug 2012 13:16:12 +0100
> Stefano Stabellini <stefano.stabellini@eu.citrix.com> wrote:
> 
>> On Fri, 10 Aug 2012, Mark van Dijk wrote:
>>>> This is upstream QEMU that is breaking, not qemu-xen-traditional
>>>> (see the code path: qemu-xen-dir-remote instead of
>>>> qemu-xen-traditional-dir-remote).
>>> Ah, I didn't know, it's a little bit confusing. Would you like me to
>>> submit a bug report with them?
>>>
>>>> Moreover it is breaking compiling qemu-nbd that we aren't
>>>> currently using. I would try out the following change to the
>>>> configure script: (..snip..)
>>> Yes, that works, thanks! But it gives a new error which I couldn't
>>> solve yet:
>>>
>>> ---
>>> LINK  qemu-nbd
>>>
>>> cutils.o: In function `strtosz_suffix_unit':
>>>
>>> tools/qemu-xen-dir/cutils.c:354: undefined reference to
>>> `__isnan'
>>>
>>> tools/qemu-xen-dir/cutils.c:357: undefined reference to `modf'
>>> collect2: ld returned 1 exit status
>>> ---
>>>
>>> Any idea there?
>> It is another "-lm" missing somewhere.
> 
> Ok, well I'll leave that to the people who can actually make a healthy
> patch out of this.
> 
>>
>>> Also -- If we're not using qemu-nbd then could you suggest a
>>> workaround please? I'd prefer something that can be patched or
>>> issued before I run the make process. (I run the make process
>>> twice now - if the first run fails, patch, then run again and if it
>>> fails again error out)
>> You can disable qemu-nbd altogether with the following patch:
>> (..snip..)
> 
> While I couldn't find the proper configure script for this (I even
> grepped for stuff like 'virtfs=no' but got nothing), it was a good
> starting point. So thanks for pointing me in the right direction :)
> 
> For now building unstable on Alpine Linux works with the following
> patch:
> 
> http://pastebin.com/QU8XuM0a

Natanael Copa sent a patch to Qemu-devel some months ago to fix the
build of Qemu on uClibc, but it seems like it was ignored:

http://lists.gnu.org/archive/html/qemu-devel/2012-06/msg02388.html

Could you try if that still applies and fixes your problems?

Roger.

Re: xen 4.2.0-rc3-pre: building failure on alpine linux / uclibc

[Mark van Dijk]

> >>>> This is upstream QEMU that is breaking, not qemu-xen-traditional
> >>>> (see the code path: qemu-xen-dir-remote instead of
> >>>> qemu-xen-traditional-dir-remote).
> >>> Ah, I didn't know, it's a little bit confusing. Would you like me
> >>> to submit a bug report with them?
> >>>
> >>>> Moreover it is breaking compiling qemu-nbd that we aren't
> >>>> currently using. I would try out the following change to the
> >>>> configure script: (..snip..)
> >>> Yes, that works, thanks! But it gives a new error which I couldn't
> >>> solve yet:
> >>>
> >>> ---
> >>> LINK  qemu-nbd
> >>>
> >>> cutils.o: In function `strtosz_suffix_unit':
> >>>
> >>> tools/qemu-xen-dir/cutils.c:354: undefined reference to
> >>> `__isnan'
> >>>
> >>> tools/qemu-xen-dir/cutils.c:357: undefined reference to `modf'
> >>> collect2: ld returned 1 exit status
> >>> ---
> >>>
> >>> Any idea there?
> >> It is another "-lm" missing somewhere.
> > 
> > Ok, well I'll leave that to the people who can actually make a
> > healthy patch out of this.
> > 
> >>
> >>> Also -- If we're not using qemu-nbd then could you suggest a
> >>> workaround please? I'd prefer something that can be patched or
> >>> issued before I run the make process. (I run the make process
> >>> twice now - if the first run fails, patch, then run again and if
> >>> it fails again error out)
> >> You can disable qemu-nbd altogether with the following patch:
> >> (..snip..)
> > 
> > While I couldn't find the proper configure script for this (I even
> > grepped for stuff like 'virtfs=no' but got nothing), it was a good
> > starting point. So thanks for pointing me in the right direction :)
> > 
> > For now building unstable on Alpine Linux works with the following
> > patch:
> > 
> > http://pastebin.com/QU8XuM0a
> 
> Natanael Copa sent a patch to Qemu-devel some months ago to fix the
> build of Qemu on uClibc, but it seems like it was ignored:
> 
> http://lists.gnu.org/archive/html/qemu-devel/2012-06/msg02388.html
> 
> Could you try if that still applies and fixes your problems?

Hi Roger, thanks for following up. I will try this tomorrow and mail the
results.

Also, for the sake of being as thourough as possible -- just now I sent
a bug report about HVM issues. This is occurring on the same machine
but I also had HVM problems when it was still running ArchLinux. So I
doubt those are related but I want to make sure people know this
regards the same machine.

-- 
Good night,
Mark van Dijk.               ,--------------------------------
----------------------------'        Wed Aug 15 20:47 UTC 2012
Today is Boomtime, the 8th day of Bureaucracy in the YOLD 3178

Re: xen 4.2.0-rc3-pre: building failure on alpine linux / uclibc

[Mark van Dijk]

> Natanael Copa sent a patch to Qemu-devel some months ago to fix the
> build of Qemu on uClibc, but it seems like it was ignored:
> 
> http://lists.gnu.org/archive/html/qemu-devel/2012-06/msg02388.html
> 
> Could you try if that still applies and fixes your problems?

Hi Roger,

I haven't tested it yet; this morning I noticed that ncopa and nenolod,
the alpine devs, got Xen 4.1.3 to work with various patches. The
following url has the working alpinelinux build:

http://git.alpinelinux.org/cgit/aports/tree/main/xen

It's probably wisest for me to take a step back and contact them
first with regards to xen-unstable.hg and alpine linux, so that's what
I'll do.

Regards,
Mark