Re: Huge difference in build sizes

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello Greg,

Thank you for the reply.

On Tuesday 02 December 2014 11:46 PM, Greg KH wrote:
> On Tue, Dec 02, 2014 at 02:38:27PM +0530, Raghavendra wrote:
>> Hello all,
>>
>> I am using Ubuntu-12.04 which came with 3.2 kernel. Parallel to this,
>> I've compiled and installed 3.12.1 kernel using the Ubuntu-3.2's
>> configuration, and the compiler which came with the distro. I've noticed
>> that there is a huge difference in the size of the .ko file between the
>> Ubuntu's kernel and the kernel which I've compiled. Sample results are :
>>
>> $ du -sh usb-storage.ko
>> It shows : 56K for the Ubuntu's 3.2 kernel
>>                   1.3M for the custom kernel that I've compiled
>>
>> I've tested the same thing for a simple hello world module :
>> $ du -sh hello.ko
>> It shows : 4.0k for the Ubuntu's 3.2 kernel
>>                   56k for the custom kernel that I've compiled
>>
>> What could be the reason for this huge amount of difference of storage
>> space in spite of using the same config file and compiler?
> You have not "stripped" the debug symbols from the kernel you built,
> which is what Ubuntu does as part of their build process.  I suggest
> turning off that kernel configuration option, as it's probably not
> needed for your development.
If you are referring to the option "CONFIG_DEBUG_INFO", then it is said 
to 'y' in both the kernel's configuration files.
Is there any other config. option or compiler flags that I need to look for?
>
> Hope this helps,
>
> greg k-h
Thanks,
Raghavendra

-------------------------------------------------------------------------------------------------------------------------------
[ C-DAC is on Social-Media too. Kindly follow us at:
Facebook: https://www.facebook.com/CDACINDIA & Twitter: @cdacindia ]

This e-mail is for the sole use of the intended recipient(s) and may
contain confidential and privileged information. If you are not the
intended recipient, please contact the sender by reply e-mail and destroy
all copies and the original message. Any unauthorized review, use,
disclosure, dissemination, forwarding, printing or copying of this email
is strictly prohibited and appropriate legal action will be taken.
-------------------------------------------------------------------------------------------------------------------------------


_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@xxxxxxxxxxxxxxxxx
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies




[Index of Archives]     [Newbies FAQ]     [Linux Kernel Mentors]     [Linux Kernel Development]     [IETF Annouce]     [Git]     [Networking]     [Security]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux SCSI]     [Linux ACPI]
  Powered by Linux