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Description of problem:
'make modules' fails on a freshly installed 7.1 system. The error messages displayed are :

To overcome this, we had to do a 'make mrproper' and rebuild the kernel.
Wny should we be doing make mrproper on a freshly installed 7.1 system ? 


Version-Release number of selected component (if applicable): RH 7.1, 2.4.2-2 kernel


How reproducible:
Always

Steps to Reproduce:
1.Install RedHat 7.1 on a system
2. Run 'make menuconfig'
3. Run 'make dep'
4. Run 'make modules'
	

Actual Results:  In file included from 
  /usr/src/linux-2.4/include/linux/spinlock.h:35, from 
/usr/src/linux-2.4/include/linux/module.h:11, from dummy.c:34: 
/usr/src/linux-2.4/include/asm/spinlock.h:8: nondigits 
  in number and not hexadecimal 
/usr/src/linux-2.4/include/asm/spinlock.h:8: nondigits in number and not 
hexadecimal /usr/src/linux-2.4/include/asm/spinlock.h:8: parse 
  error before `1b7d4074' /usr/src/linux-2.4/include/asm/spinlock.h:9: 
`printk_R_ver_str' declared as function returning a function 
  /usr/src/linux-2.4/include/asm/spinlock.h:9: warning: function 
declaration isn't a prototype In file included from dummy.c:34: 
  /usr/src/linux-2.4/include/linux/module.h:173: nondigits in number and 
not hexadecimal /usr/src/linux-2.4/include/linux/module.h:173: nondigits 
in number and not 
  hexadecimal /usr/src/linux-2.4/include/linux/module.h:173: nondigits 
in number and not hexadecimal 
/usr/src/linux-2.4/include/linux/module.h:173: nondigits in number 
  and not hexadecimal /usr/src/linux-2.4/include/linux/module.h:173: 
parse error before `62dada05' 
/usr/src/linux-2.4/include/linux/module.h:173: 
  `inter_module_register_R_ver_str' declared as function returning a 
function /usr/src/linux-2.4/include/linux/module.h:173: warning: 
function declaration isn't a prototype 
  /usr/src/linux-2.4/include/linux/module.h:174: nondigits in number and 
not hexadecimal /usr/src/linux-2.4/include/linux/module.h:174: missing 
white space after number 
  `7a9e845' /usr/src/linux-2.4/include/linux/module.h:174: parse error 
before `7a9e845' /usr/src/linux-2.4/include/linux/module.h:174: 
`inter_module_unregister_R_ver_str' 
  declared as function returning a function 
/usr/src/linux-2.4/include/linux/module.h:174: warning: function 
declaration isn't a prototype 
  /usr/src/linux-2.4/include/linux/module.h:175: 
`inter_module_get_R_ver_str' declared as function returning a function 
/usr/src/linux-2.4/include/linux/module.h:175: 
  warning: parameter names (without types) in function declaration 
/usr/src/linux-2.4/include/linux/module.h:176: 
`inter_module_get_request_R_ver_str' declared as 
  function returning a function 
/usr/src/linux-2.4/include/linux/module.h:176: warning: parameter names 
(without types) in function declaration 
  /usr/src/linux-2.4/include/linux/module.h:177: nondigits in number and 
not hexadecimal /usr/src/linux-2.4/include/linux/module.h:177: nondigits 
in number and not 
  hexadecimal /usr/src/linux-2.4/include/linux/module.h:177: nondigits 
in number and not hexadecimal 
/usr/src/linux-2.4/include/linux/module.h:177: parse error before 
  `6b99f7d8' /usr/src/linux-2.4/include/linux/module.h:177: 
`inter_module_put_R_ver_str' declared as function returning a function 
  /usr/src/linux-2.4/include/linux/module.h:177: warning: function 
declaration isn't a prototype 
/usr/src/linux-2.4/include/linux/module.h:186: 
  `try_inc_mod_count_R_ver_str' declared as function returning a 
function /usr/src/linux-2.4/include/linux/module.h:186: warning: 
parameter names (without types) in 
  function declaration make[2]: *** [dummy.o] Error 1 make[1]: *** 
[_modsubdir_net] Error 2 make: *** [_mod_drivers] Error 2 

Expected Results:  make modules shall be executed clean wtihout errors

Additional info:

We observe a "_ver_str (...)"  tag for exported symbols in the kernel .ver files.
After 'make mrproper' and rebuilding the kernel, we observe the conventional  checksum tag "..12345678".
Why the difference ?