linux-kernel - Re: Dependency bug in the uvcvideo Kconfig

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Message-ID: <5239BFB8.4020304@infradead.org>
Date:	Wed, 18 Sep 2013 07:59:04 -0700
From:	Randy Dunlap <rdunlap@...radead.org>
To:	"Jeff P. Zacher" <ad_sicks@...oo.com>
CC:	linux-kernel@...r.kernel.org,
	linux-media <linux-media@...r.kernel.org>
Subject: Re: Dependency bug in the uvcvideo Kconfig

[adding linux-media mailing list]


On 09/18/13 06:18, Jeff P. Zacher wrote:
> Not subscribed, please CC'me in replies:
> 
> There seems to be a dependency bug in the Kconfig for the uvcvideo kernel 
> module.  If uvcvideo is built in and usb support is built as a module, the 
> kernel build will fail with the obviously missing dependanies.
> 
> 
> Error logs:
> 
> * ERROR: Failed to compile the "bzImage" target...
> * 
> * -- Grepping log... --
> * 
> *  SHIPPED scripts/genksyms/keywords.hash.c
> *  SHIPPED scripts/genksyms/parse.tab.h
> *  SHIPPED scripts/genksyms/parse.tab.c
> *  HOSTCC  scripts/genksyms/lex.lex.o
> *scripts/genksyms/lex.lex.c_shipped: In function ‘yylex1’:
> *scripts/genksyms/lex.lex.c_shipped:904:1: warning: ignoring return value of 
> ‘fwrite’, declared with attribute warn_unused_result [-Wunused-result]
> *--
> *  CC      drivers/video/console/font_8x16.o
> *  CC      drivers/video/console/softcursor.o
> *  CC      sound/core/seq/seq_memory.o
> *  CC      drivers/video/console/fbcondecor.o
> *  CC      sound/core/seq/seq_queue.o
> *drivers/video/console/fbcondecor.c:511:6: warning: function declaration isn’t 
> a prototype [-Wstrict-prototypes]
> *--
> *(.text+0xf8fb1): undefined reference to `usb_submit_urb'
> *drivers/built-in.o: In function `uvc_init':
> *uvc_driver.c:(.init.text+0x908a): undefined reference to 
> `usb_register_driver'
> *drivers/built-in.o: In function `uvc_cleanup':
> *uvc_driver.c:(.exit.text+0x67e): undefined reference to `usb_deregister'
> *make: *** [vmlinux] Error 1
> *--
> * Running with options: --lvm --menuconfig all
> * Using genkernel.conf from /etc/genkernel.conf
> * Sourcing arch-specific config.sh from 
> /usr/share/genkernel/arch/x86_64/config.sh ..
> * Sourcing arch-specific modules_load from 
> /usr/share/genkernel/arch/x86_64/modules_load ..
> *
> * ERROR: Failed to compile the "bzImage" target...
> * 
> * -- End log... --
> 
> Compiling uvc as a module allows the compilation to complete.
> 
> Platform x86_64
> 
> Ref: http://forums.gentoo.org/viewtopic-p-7398782.html#7398782
> 
> 
> -- Jeff P. Zacher
> ad_sicks@...oo.com


-- 
~Randy
--
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