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Altera_Forum's avatar
Altera_Forum
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13 years ago

Custom Linker Script

Dear all, I have to add an output section in the final binary called "EXTSec". Therefore, I modified the makefile to point to a linkerscript.lds. Then I copied the original likerscript.x contents,...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Thanks for your reply. I assume something like duplication is happening. I'll describe my sitution, please help me with your any comments/suggestions.

I want to implement a function named 'validate()' in sound/usb driver and make it accessible to drivers/usb/host/xhci_hcd driver. For that, I declare validate() as an extern function in /include/linux/usb/hcd.h, which is included by both the relevant files in sound and xhci drivers. Then I do export_symbol(validate) from sound driver and use KBUILD_EXTRA_SYMBOLS=/usr/src/linux-3.9.4/sound/usb/Module.symvers in the Makefile of xhci_hcd driver.

Simultaneously, I am using the above mentioned linker script in the makefile of sound driver. Whenever I do the export_symbol(validate), building the sound driver gives me above erros. Can you please explain me what's happening here, whether xhci_driver is duplicating snd-usb-audio.o? How can I resolve the error and accomplish what I want to do?