modversion.h in kernel 2.6.x

modversion.h in kernel 2.6.x

[Lei Yang]

Hello,

Could anyone tell me what happened with modversion.h in 2.6.x? I want to
build a module whose makefile indicates that,

ifdef CONFIG_MODVERSIONS
MODVERSIONS:= -DMODVERSIONS -include
$(KERNEL_DIR)/include/linux/modversions.h
CKERNOPS += $(MODVERSIONS)
endif

I checked .config in source tree and yes, CONFIG_MODVERSIONS is defined
as 'y'. But there is just no modversions.h in /include/linux :( Also, I
don't think it is in kernel version 2.4.x.

What the hack is modversions.h? 

Thanks!

Lei

Re: modversion.h in kernel 2.6.x

[Arjan van de Ven]

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On Tue, 2004-08-03 at 23:55, Lei Yang wrote:
> Hello,
> 
> Could anyone tell me what happened with modversion.h in 2.6.x? I want to
> build a module whose makefile indicates that,

this module has a broken makefile for 2.6 .....

it really should use the kbuild infrastructure instead.

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Re: modversion.h in kernel 2.6.x

[Sam Ravnborg]

On Tue, Aug 03, 2004 at 02:55:20PM -0700, Lei Yang wrote:
> Hello,
> 
> Could anyone tell me what happened with modversion.h in 2.6.x? I want to
> build a module whose makefile indicates that,
> 
> ifdef CONFIG_MODVERSIONS
> MODVERSIONS:= -DMODVERSIONS -include
> $(KERNEL_DIR)/include/linux/modversions.h
> CKERNOPS += $(MODVERSIONS)
> endif

This is a sign of a broken module.
Request the author to use the kbuild infrastructure when building the module.
See Documentation/kbuild/modules.txt and Driver porting series at lwn.net for
good examples.

If you do not need CONFIG_MODVERSION then try to disable it and compile
the module, you may be lucky that it works.

But be carefull not to enable any options that may change ABI, for example reg-parm=3
is know to cause problems if not used consistently.

	Sam