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[Jerry Wong]

Jerry Wong

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• Super Hero
• Posts: 12

Hey all,

I need to use V4L to get access to a USB webcam. I get a kernel panic when I try to install v4l-conf via apt-get. It's been suggested to me that this means V4L is not built into my kernel. Is this the case? If so, how would I go about getting this included?

[attitude]

attitude

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• Super Hero
• Posts: 13

Download the kernel ource. apply the patches. Setup a toolchain (or just apt-get on a host Debian) the cross packages for arm) Then make menuconfig and select the needed configuration... then make uImage and flash the new kernel...

[Jerry Wong]

Jerry Wong

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• Super Hero
• Posts: 12

I got the toolchain setup, but I'm not sure what I'm doing wrong when compiling the kernel. Is there a subarch that I need to select?

Note: I already did make menuconfig without any problems. My arch is x86 on MacOS X.

Code:

> make ARCH=arm CROSS_COMPILE=arm-elf-
  CHK     include/linux/version.h
make[1]: `include/asm-arm/mach-types.h' is up to date.
  CHK     include/linux/utsrelease.h
  SYMLINK include/asm -> include/asm-arm
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/basic/docproc
  HOSTCC  scripts/basic/hash
  CC      kernel/bounds.s
  GEN     include/linux/bounds.h
  CC      arch/arm/kernel/asm-offsets.s
  GEN     include/asm/asm-offsets.h
  CALL    scripts/checksyscalls.sh
<stdin>:1097:2: warning: #warning syscall fadvise64 not implemented
<stdin>:1265:2: warning: #warning syscall migrate_pages not implemented
<stdin>:1321:2: warning: #warning syscall pselect6 not implemented
<stdin>:1325:2: warning: #warning syscall ppoll not implemented
<stdin>:1365:2: warning: #warning syscall epoll_pwait not implemented
  CC      scripts/mod/empty.o
  HOSTCC  scripts/mod/mk_elfconfig
scripts/mod/mk_elfconfig.c:4:17: error: elf.h: No such file or directory
scripts/mod/mk_elfconfig.c: In function ‘main’:
scripts/mod/mk_elfconfig.c:9: error: ‘EI_NIDENT’ undeclared (first use in this function)
scripts/mod/mk_elfconfig.c:9: error: (Each undeclared identifier is reported only once
scripts/mod/mk_elfconfig.c:9: error: for each function it appears in.)
scripts/mod/mk_elfconfig.c:19: error: ‘ELFMAG’ undeclared (first use in this function)
scripts/mod/mk_elfconfig.c:19: error: ‘SELFMAG’ undeclared (first use in this function)
scripts/mod/mk_elfconfig.c:23: error: ‘EI_CLASS’ undeclared (first use in this function)
scripts/mod/mk_elfconfig.c:24: error: ‘ELFCLASS32’ undeclared (first use in this function)
scripts/mod/mk_elfconfig.c:27: error: ‘ELFCLASS64’ undeclared (first use in this function)
scripts/mod/mk_elfconfig.c:33: error: ‘EI_DATA’ undeclared (first use in this function)
scripts/mod/mk_elfconfig.c:34: error: ‘ELFDATA2LSB’ undeclared (first use in this function)
scripts/mod/mk_elfconfig.c:37: error: ‘ELFDATA2MSB’ undeclared (first use in this function)
scripts/mod/mk_elfconfig.c:9: warning: unused variable ‘ei’
make[2]: *** [scripts/mod/mk_elfconfig] Error 1
make[1]: *** [scripts/mod] Error 2
make: *** [scripts] Error 2

[admin]

admin

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• Administrator
• Super Hero
• Posts: 342

You should use arm-linux- as your cross compiler prefix