[gentoo-user] Genkernel doesn't work when module loadable support is disabled

[gentoo-user] Genkernel doesn't work when module loadable support is disabled

[Xavier MOGHRABI]

Dear all,

I'm trying to generate a kernel without module. So I've disabled "Enable 
loadable module support" option with genkernel.

Genkernel compiles well the bzimage but fails after with the message "ERROR: 
Failed to compile the "modules" target..." (look hereunder log).

Do you know how can I generate my kernel w/o module support using Genkernel ?

-- 
Xavier MOGHRABI - Consortium ObjectWeb
Jabber: moghrabi@jabber.objectweb.org - Phone: +33 4 76 61 52 35


*         >> Compiling 2.6.17-gentoo-r7 bzImage...
*         >> Compiling 2.6.17-gentoo-r7 modules...
* ERROR: Failed to compile the "modules" target...

* -- Grepping log... --

  SCSI media changer support (CHR_DEV_SCH) [N/m/y/?] n
  *
  * Some SCSI devices (e.g. CD jukebox) support multiple LUNs
  *
  Probe all LUNs on each SCSI device (SCSI_MULTI_LUN) [Y/n/?] y
  Verbose SCSI error reporting (kernel size +=12K) (SCSI_CONSTANTS) [N/y/?] n
--
*
* InfiniBand support
*
InfiniBand support (INFINIBAND) [N/m/y/?] n
*
* EDAC - error detection and reporting (RAS) (EXPERIMENTAL)
*
EDAC core system error reporting (EXPERIMENTAL) (EDAC) [N/m/y/?] n
--
  CC      fs/read_write.o
  CC      fs/file_table.o
  CC      fs/buffer.o
  CC      fs/bio.o
fs/bio.c: In function 'bio_alloc_bioset':
fs/bio.c:169: warning: 'idx' may be used uninitialized in this function
--
  CC      fs/splice.o
  CC      fs/sync.o
  CC      fs/inotify.o
  CC      fs/eventpoll.o
fs/eventpoll.c: In function 'sys_epoll_create':
fs/eventpoll.c:500: warning: 'fd' may be used uninitialized in this function
--
  CC      fs/sysfs/bin.o
  CC      fs/sysfs/group.o
  LD      fs/sysfs/built-in.o
  CC      fs/udf/balloc.o
fs/udf/balloc.c: In function 'udf_table_new_block':
fs/udf/balloc.c:751: warning: 'goal_eloc.logicalBlockNum' may be used 
uninitialized in this function
--
  CC      fs/udf/lowlevel.o
  CC      fs/udf/namei.o
  CC      fs/udf/partition.o
  CC      fs/udf/super.o
fs/udf/super.c: In function 'udf_fill_super':
fs/udf/super.c:1358: warning: 'ino.partitionReferenceNum' may be used 
uninitialized in this function
--
  CC      ipc/compat.o
  CC      ipc/util.o
  CC      ipc/msgutil.o
  CC      ipc/msg.o
ipc/msg.c: In function 'sys_msgctl':
ipc/msg.c:338: warning: 'setbuf.qbytes' may be used uninitialized in this 
function
ipc/msg.c:338: warning: 'setbuf.uid' may be used uninitialized in this 
function
ipc/msg.c:338: warning: 'setbuf.gid' may be used uninitialized in this 
function
ipc/msg.c:338: warning: 'setbuf.mode' may be used uninitialized in this 
function
  CC      ipc/sem.o
ipc/sem.c: In function 'sys_semctl':
ipc/sem.c:810: warning: 'setbuf.uid' may be used uninitialized in this 
function
ipc/sem.c:810: warning: 'setbuf.gid' may be used uninitialized in this 
function
ipc/sem.c:810: warning: 'setbuf.mode' may be used uninitialized in this 
function
--
  CC      drivers/md/dm-target.o
  CC      drivers/md/dm-linear.o
  CC      drivers/md/dm-stripe.o
  CC      drivers/md/dm-ioctl.o
drivers/md/dm-ioctl.c: In function 'ctl_ioctl':
drivers/md/dm-ioctl.c:1388: warning: 'param' may be used uninitialized in this 
function
--
  LD      drivers/usb/mon/usbmon.o
  LD      drivers/usb/mon/built-in.o
  CC      drivers/usb/net/catc.o
  CC      drivers/usb/net/kaweth.o
drivers/usb/net/kaweth.c: In function 'kaweth_control':
drivers/usb/net/kaweth.c:1212: warning: 'length' may be used uninitialized in 
this function
--
  CC      lib/zlib_inflate/inffast.o
  CC      lib/zlib_inflate/inflate.o
  CC      lib/zlib_inflate/inflate_sync.o
  CC      lib/zlib_inflate/inftrees.o
lib/zlib_inflate/inftrees.c: In function 'huft_build':
lib/zlib_inflate/inftrees.c:121: warning: 'r.base' may be used uninitialized 
in this function
--
  CC      arch/x86_64/boot/compressed/misc.o
  OBJCOPY arch/x86_64/boot/compressed/vmlinux.bin
  GZIP    arch/x86_64/boot/compressed/vmlinux.bin.gz
  LD      arch/x86_64/boot/compressed/piggy.o
  LD      arch/x86_64/boot/compressed/vmlinux
ld: warning: i386:x86-64 architecture of input file 
`arch/x86_64/boot/compressed/head.o' is incompatible with i386 output
--

The present kernel configuration has modules disabled.
Type 'make config' and enable loadable module support.
Then build a kernel with module support enabled.

make: *** [modules] Error 1
* Gentoo Linux Genkernel; Version 3.4.0
* Running with options: all

* ERROR: Failed to compile the "modules" target...

* -- End log... --
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Genkernel doesn't work when module loadable support is disabled

[Alan McKinnon]

On Friday 01 September 2006 15:29, Xavier MOGHRABI wrote:
> Dear all,
>
> I'm trying to generate a kernel without module. So I've
> disabled "Enable loadable module support" option with
> genkernel.
>
> Genkernel compiles well the bzimage but fails after with the
> message "ERROR: Failed to compile the "modules" target..."
> (look hereunder log).
>
> Do you know how can I generate my kernel w/o module support
> using Genkernel ?

You don't.

The entire point of genkernel is to make it easy for newbies to 
compile a kernel, complete with all needed modules, lvm & raid 
support if needed, maybe a splash and an initramfs. I suppose 
you *could* use the correct options to genkernel to do it, but 
if you are creating a monolithic kernel then you must know what 
you are doing, so what you want is:

cd /usr/src/linux
make menuconfig && make
copy kernel, System.map, .config and whatever else you like to 
keep to /boot; edit grub.conf
reboot

Using genkernel for this is overkill, much like a bulldozer is 
overkill for digging one hole to plant a rosebush :-)


alan
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Genkernel doesn't work when module loadable support is disabled

[Mike Williams]

On Friday 01 September 2006 14:29, Xavier MOGHRABI wrote:
> I'm trying to generate a kernel without module. So I've disabled "Enable
> loadable module support" option with genkernel.
>
> Genkernel compiles well the bzimage but fails after with the message
> "ERROR: Failed to compile the "modules" target..." (look hereunder log).
>
> Do you know how can I generate my kernel w/o module support using Genkernel
> ?

> The present kernel configuration has modules disabled.
> Type 'make config' and enable loadable module support.
> Then build a kernel with module support enabled.

I'm not sure where that error comes from, but it sounds like you do need to 
heed it.
If you *want* a kernel without modules, then enable module loading and make 
sure all the drivers you need are compiled in.
If you *need* to not have module loading, then I'd imagine you have no choice 
but to compile it manually.

p.s. Do you *need* an initrd/initramfs? With no modules I doubt you do, so try 
genkernel with kernel instead of all.

-- 
Mike Williams
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Genkernel doesn't work when module loadable support is disabled

[Richard Fish]

On 9/1/06, Alan McKinnon <alan@linuxholdings.co.za> wrote:
> On Friday 01 September 2006 15:29, Xavier MOGHRABI wrote:
> > Do you know how can I generate my kernel w/o module support
> > using Genkernel ?
>
> You don't.
>
> The entire point of genkernel is to make it easy for newbies to
> compile a kernel, complete with all needed modules, lvm & raid
> support if needed, maybe a splash and an initramfs.

Right.

Although if you did still want to use genkernel to get an initramfs
and a nice splash screen, the correct way is:

genkernel bzImage initrd

It might also be useful for you to read genkernel --help.

-Richard
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