libxl.c ERROR during compiling Xen 4.2-Unstable revision 25374

libxl.c ERROR during compiling Xen 4.2-Unstable revision 25374

[cyberhawk001]

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  I have had Xen 4.2-Unstable compiled a week or so ago and it all went 
fine and running, but i forget what revision i compiled now.

When i ran the *xl create /etc/xen/win7.cfg* to create a VM, i got an 
error about libxl and running "*sudo xl list*" shows the newly created 
VM, SO i just ignored that error for now. That error message was:

*libxl: error: libxl.c:3117:libxl_sched_credit_domain_set: Cpu weight 
out of range, valid values are within range from 1 to 65535
*
---------------------------------- ---------------------------------- 
----------------------------------

SO, I noticed on the xen-unstable.hg tree that there have been a lot of 
updates to the libxl lately SO just out of curiosity, i wanted to get 
the latest revision 25374 of xen-unstable as of today 5/20/2012, and 
compile it. BUT, i cannot compile Xen anymore as the compile stops with 
warnings and error messages.

Upon scrolling up in the terminal window, i noticed these warning or 
error messages:

*node-select.c:57:6: warning: function declaration isn't a prototype 
[-Wstrict-prototypes]
node-select.c: In function 'vchan_wr':
node-select.c:60:2: warning: ISO C90 forbids mixed declarations and code 
[-Wdeclaration-after-statement]
node-select.c: At top level:
node-select.c:71:6: warning: function declaration isn't a prototype 
[-Wstrict-prototypes]
node-select.c: In function 'stdout_wr':
node-select.c:74:2: warning: ISO C90 forbids mixed declarations and code 
[-Wdeclaration-after-statement]*

*The error log from compiling the libSDL test is:
/tmp/qemu-conf--3330-.c:1:17: fatal error: SDL.h: No such file or directory*

*../xen-unstable.hg/tools/qemu-xen-traditional-dir/hw/eepro100.c:1232:5: 
warning: 'val' may be used uninitialized in this function [-Wuninitialized]*


_I also get like a dozen warnings about this:_
*../tools/xenstore/compat/xs.h:1:2: warning: #warning xs.h is deprecated 
use xenstore.h instead [-Wcpp]*


_AND finally the compilations stops with these messages:_
*libxl.c: In function 'libxl_primary_console_exec':
libxl.c:1233:9: error: case value '4294967295' not in enumerated type 
'libxl_domain_type' [-Werror=switch]

cc1: all warnings being treated as errors
make[3]: *** [libxl.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: Leaving directory 
`/home/xyber/Desktop/KERNEL_BUILD/Xen/xen-unstable.hg/tools/libxl'
make[2]: *** [subdir-install-libxl] Error 2
make[2]: Leaving directory 
`/home/xyber/Desktop/KERNEL_BUILD/Xen/xen-unstable.hg/tools'
make[1]: *** [subdirs-install] Error 2
make[1]: Leaving directory 
`/home/xyber/Desktop/KERNEL_BUILD/Xen/xen-unstable.hg/tools'
make: *** [install-tools] Error 2*

---------------------------------- ---------------------------------- 
----------------------------------

All of these messages appear at different times during compile, but 
these where the ones i found thru a quick glance at the terminal window 
output. I have also tried to compile the latest Xen 4.2 THREE different 
times now, and in all cases it seems to end with a similar error about 
*libxl.c*.

Each time i tried to compile, i booted into non-Xen kernel, ran "*sudo 
make uninstall*" of my current Xen 4.2-unstable and ran "*sudo dpkg -r 
xen-upstream-4.2-unstable*", AND twice now i cloned a fresh copy of the 
xen-unstable.hg before compile.



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Re: libxl.c ERROR during compiling Xen 4.2-Unstable revision 25374

[Ian Campbell]

On Sun, 2012-05-20 at 17:43 +0100, cyberhawk001@gmail.com wrote:
> 
>  I have had Xen 4.2-Unstable compiled a week or so ago and it all went
> fine and running, but i forget what revision i compiled now.
> 
> When i ran the xl create /etc/xen/win7.cfg to create a VM, i got an
> error about libxl and running "sudo xl list" shows the newly created
> VM, SO i just ignored that error for now. That error message was:
> 
> libxl: error: libxl.c:3117:libxl_sched_credit_domain_set: Cpu weight
> out of range, valid values are within range from 1 to 65535

This is a harmless warning and is on our list to fix for 4.2

> ---------------------------------- ----------------------------------
> ----------------------------------
> 
> SO, I noticed on the xen-unstable.hg tree that there have been a lot
> of updates to the libxl lately SO just out of curiosity, i wanted to
> get the latest revision 25374 of xen-unstable as of today 5/20/2012,
> and compile it. BUT, i cannot compile Xen anymore as the compile stops
> with warnings and error messages. 
> 
> Upon scrolling up in the terminal window, i noticed these warning or
> error messages:

Thanks, it can be useful for us to see the full context, in which case
using something like tee(1) to collect the full log and attaching it can
be useful.

> node-select.c:57:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
> node-select.c: In function ‘vchan_wr’:
> node-select.c:60:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
> node-select.c: At top level:
> node-select.c:71:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
> node-select.c: In function ‘stdout_wr’:
> node-select.c:74:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]

These are genuine warnings but aren't causing build failures (I presume
no -Werror in that subdir).

> The error log from compiling the libSDL test is: 
> /tmp/qemu-conf--3330-.c:1:17: fatal error: SDL.h: No such file or directory

This means you are missing the SDL development package. I'm not sure if
this is optional or mandatory, nor whether this message is fatal without
more context from the build logs.

> ../xen-unstable.hg/tools/qemu-xen-traditional-dir/hw/eepro100.c:1232:5: warning: ‘val’ may be used uninitialized in this function [-Wuninitialized]
> 
> 
> I also get like a dozen warnings about this:
> ../tools/xenstore/compat/xs.h:1:2: warning: #warning xs.h is
> deprecated use xenstore.h instead [-Wcpp]

These are currently to be expected and are harmless.

> AND finally the compilations stops with these messages:
> libxl.c: In function ‘libxl_primary_console_exec’:
> libxl.c:1233:9: error: case value ‘4294967295’ not in enumerated type
> ‘libxl_domain_type’ [-Werror=switch]

This one is known and a fix is in progress. It's most likely this one
which is causing the actual build error.

This slipped through our testing net due to various compiler versions
being cleverer/stupider than others and so trigger more or less
warnings, this one happens only with a more modern gcc than what our
test system uses.

Ian.



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Re: libxl.c ERROR during compiling Xen 4.2-Unstable revision 25374

[cyberhawk001]

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Hey Ian thanks for the reply back. Well i have done some more compiling 
and messing with and
this is what i found so far:

This time i did as you said, i piped the compile output to a file using 
the *tee* command.

  ---------------------------- ---------------------------- 
---------------------------- ----------------------------
A.) I cloned a fresh copy of *xen-unstable.hg rev-25376* (5/22/2012) and 
ran:

./configure
sudo make -j5 xen    --> This compiled fine and didn't see any errors
sudo make -j5 tools --> THIS is where all of the errors happen and fail 
to compile

  ---------------------------- ---------------------------- 
---------------------------- ----------------------------
B.) This time i installed the SDL devel package as you suggested and 
cloned another fresh copy of
*xen-unstable.hg rev-25376*

sudo apt-get install libsdl1.2-dev
./configure
sudo make -j5 xen    --> Again, this compiled fine and saw no errors
sudo make -j5 tools --> This time i do not get that error about the 
libSDL BUT i still get other errors
                                             and stops compiling
  ---------------------------- ---------------------------- 
---------------------------- ----------------------------
I have saved the above compile trials to 4 files as the following:

Compiled BEFORE installing libsdl1.2-dev
A - make_xen.log
A - make_tools.log

Compiled AFTER installing libsdl1.2-dev
B - make_xen.log
B - make_tools.log

ALSO, since i didn't want to attach so many large files in a text 
format, i put all 4 files in a TAR.GZ file
and attached that instead.
--------------------------- ---------------------------- 
---------------------------- ----------------------------

So, hopefully this will be helpful to you or to some else in determining 
why, in this case,
*Xen 4.2-unstable REV-25376* is not wanting to compile anymore  .... :)






> On Sun, 2012-05-20 at 17:43 +0100, cyberhawk001@gmail.com wrote:
>>   I have had Xen 4.2-Unstable compiled a week or so ago and it all went
>> fine and running, but i forget what revision i compiled now.
>>
>> When i ran the xl create /etc/xen/win7.cfg to create a VM, i got an
>> error about libxl and running "sudo xl list" shows the newly created
>> VM, SO i just ignored that error for now. That error message was:
>>
>> libxl: error: libxl.c:3117:libxl_sched_credit_domain_set: Cpu weight
>> out of range, valid values are within range from 1 to 65535
> This is a harmless warning and is on our list to fix for 4.2
>
>> ---------------------------------- ----------------------------------
>> ----------------------------------
>>
>> SO, I noticed on the xen-unstable.hg tree that there have been a lot
>> of updates to the libxl lately SO just out of curiosity, i wanted to
>> get the latest revision 25374 of xen-unstable as of today 5/20/2012,
>> and compile it. BUT, i cannot compile Xen anymore as the compile stops
>> with warnings and error messages.
>>
>> Upon scrolling up in the terminal window, i noticed these warning or
>> error messages:
> Thanks, it can be useful for us to see the full context, in which case
> using something like tee(1) to collect the full log and attaching it can
> be useful.
>
>> node-select.c:57:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
>> node-select.c: In function ‘vchan_wr’:
>> node-select.c:60:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
>> node-select.c: At top level:
>> node-select.c:71:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
>> node-select.c: In function ‘stdout_wr’:
>> node-select.c:74:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
> These are genuine warnings but aren't causing build failures (I presume
> no -Werror in that subdir).
>
>> The error log from compiling the libSDL test is:
>> /tmp/qemu-conf--3330-.c:1:17: fatal error: SDL.h: No such file or directory
> This means you are missing the SDL development package. I'm not sure if
> this is optional or mandatory, nor whether this message is fatal without
> more context from the build logs.
>
>> ../xen-unstable.hg/tools/qemu-xen-traditional-dir/hw/eepro100.c:1232:5: warning: ‘val’ may be used uninitialized in this function [-Wuninitialized]
>>
>>
>> I also get like a dozen warnings about this:
>> ../tools/xenstore/compat/xs.h:1:2: warning: #warning xs.h is
>> deprecated use xenstore.h instead [-Wcpp]
> These are currently to be expected and are harmless.
>
>> AND finally the compilations stops with these messages:
>> libxl.c: In function ‘libxl_primary_console_exec’:
>> libxl.c:1233:9: error: case value ‘4294967295’ not in enumerated type
>> ‘libxl_domain_type’ [-Werror=switch]
> This one is known and a fix is in progress. It's most likely this one
> which is causing the actual build error.
>
> This slipped through our testing net due to various compiler versions
> being cleverer/stupider than others and so trigger more or less
> warnings, this one happens only with a more modern gcc than what our
> test system uses.
>
> Ian.
>
>
>


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