Camera Module (Board) on Gentoo

[nioyco]

Hey,

Anyone know the way to enable the new Camera Module on Gentoo linux?
The tools seems to be pre-installed for Raspian

Thanx

[nioyco]

Next step : I'm downloading last kernel (linux.git) and i will try genkernel with menuconfig option to see if the camera module option exist in and check the modules. Maybe i can activate it

[ZappeL]

Hey,
i'm stucking at the same point, got my cam-module a couple of days ago, but i can't get it working..

i'm using kernel 3.10.1 (rpi-3.10.y branch from: https://github.com/raspberrypi/linux). Anytime i try to start the device i got the following message:

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mmal: mmal_component_create_core: could not find component 'vc.ril.camera'
mmal: Failed to create camera component
mmal: main: Failed to create camera component
mmal: Failed to run camera app. Please check for firmware updates

I've checked everything twice (with the raspian image it works fine). I tested it also with the "_x.*" firmware files, but the error is still there. I think it's caused by a missing kernel module, but i dont know which one, maybe someone has a hint for us.

Regards

[Batolemaeus]

It's not (strictly) as kernel issue.

If you do a ldd on /opt/vc/bin/raspistill, you will notice that there's something missing:

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libmmal_core.so => /opt/vc/lib/libmmal_core.so (0xb6f59000)
        libmmal_util.so => /opt/vc/lib/libmmal_util.so (0xb6f43000)
        libvcos.so => /opt/vc/lib/libvcos.so (0xb6f31000)
        libbcm_host.so => /opt/vc/lib/libbcm_host.so (0xb6f17000)
        libpthread.so.0 => /lib/libpthread.so.0 (0xb6ef7000)
        libc.so.6 => /lib/libc.so.6 (0xb6dc3000)
        libgcc_s.so.1 => /usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.6.3/libgcc_s.so.1 (0xb6db0000)
        libdl.so.2 => /lib/libdl.so.2 (0xb6da5000)
        librt.so.1 => /lib/librt.so.1 (0xb6d96000)
        libvchiq_arm.so => /opt/vc/lib/libvchiq_arm.so (0xb6d87000)
        /lib/ld-linux-armhf.so.3 (0xb6f6f000)

Compare this to the output of the binary from the github repo:

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        libmmal_core.so => /opt/vc/lib/libmmal_core.so (0xb6ecf000)
        libmmal_util.so => /opt/vc/lib/libmmal_util.so (0xb6eb9000)
        libmmal_vc_client.so => /opt/vc/lib/libmmal_vc_client.so (0xb6ea6000)
        libvcos.so => /opt/vc/lib/libvcos.so (0xb6e94000)
        libbcm_host.so => /opt/vc/lib/libbcm_host.so (0xb6e7a000)
        libpthread.so.0 => /lib/libpthread.so.0 (0xb6e5a000)
        libdl.so.2 => /lib/libdl.so.2 (0xb6e4f000)
        librt.so.1 => /lib/librt.so.1 (0xb6e40000)
        libvchiq_arm.so => /opt/vc/lib/libvchiq_arm.so (0xb6e32000)
        libc.so.6 => /lib/libc.so.6 (0xb6cfe000)
        libgcc_s.so.1 => /usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.6.3/libgcc_s.so.1 (0xb6cea000)
        /lib/ld-linux-armhf.so.3 (0xb6ee5000)

What is happening? Well, the --as-needed flag is being passed to the linker as a default option since ~2010. It is supposed to strip all unneeded libraries..but in this case, it strips one too many.

You can override this behavior. In /etc/portage/env, create a file. Let's call it raspberrypi-userland. Put the following into the file:

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LDFLAGS="-Wl,-O1"

Then, in /etc/portage/package.env:

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media-libs/raspberrypi-userland raspberrypi-userland

Then re-emerge raspberrypi-userland, and raspistill should work.

[brendlefly62]

I've tried all the steps above to ensure the --as-needed was corrected, but I still get an error trying to use the raspistill or raspivid. Can someone advise? is this a toolchain issue? (I noticed above was with gcc-4.6.3, whereas I'm on gcc-4.7.3 and glibc-2.17 -- Also, If I use a raspbian image to boot the same system, the camera works fine -- but I notice raspbian and the github source for userland are expecting to compile with arm-linux-gnueabihf- rather than the compiler I have [armv6j-hardfloat-linux-gnueabi-])

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# raspistill -o image.jpg
raspistill: symbol lookup error: /opt/vc/lib/libGLESv2.so: undefined symbol: client_tls

### other maybe-relevant background info
# uname -a
Linux Raspberry06 3.12.17-raspberrypi+ #2 PREEMPT Sat Apr 26 09:00:40 EDT 2014 armv6l BCM2708 GNU/Linux

# gcc-config -l
 [1] armv6j-hardfloat-linux-gnueabi-4.7.3 *

# eix glibc
[I] sys-libs/glibc
     Available versions:  (2.2) ~2.9_p20081201-r3^s 2.10.1-r1^s 2.11.3^s ~*2.12.1-r3^s 2.12.2^s ~2.13-r2^s 2.13-r4^s ~*2.14^s ~2.14.1-r2^s 2.14.1-r3^s ~*2.15-r1^s 2.15-r2^s 2.15-r3^s{tbz2} 2.16.0^s 2.17^s{tbz2} ~2.18-r1^s{tbz2} ~2.19^s **9999^s
       {debug gd hardened multilib nscd profile selinux suid systemtap vanilla CROSSCOMPILE_OPTS="headers-only"}
     Installed versions:  2.17(2.2)^s{tbz2}(18:22:41 04/20/14)(-debug -gd -hardened -multilib -nscd -profile -selinux -suid -systemtap -vanilla CROSSCOMPILE_OPTS="-headers-only")
     Homepage:            http://www.gnu.org/software/libc/libc.html
     Description:         GNU libc6 (also called glibc2) C library

[DougieLawson]

Pull the source from https://github.com/raspberrypi/userland and there's a buildme script that should build everything and install it all in the right places.

[brendlefly62]

Thanks, DougieLawson. I did that, but the buildme script fails ... that's why I submitted the question.

[DougieLawson]

What exciting messages did you get from that buildme failure?

[brendlefly62]

Um, well, you know - I just re-ran it, and this time it successfully completed and installed. I can also capture images and video. However, I still get errors trying to run raspistill or raspivid:

raspistill -- note that the first fails completely; the second reports errors but captures an image.

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# raspistill -o image8.jpg
raspistill: symbol lookup error: /opt/vc/lib/libGLESv2.so: undefined symbol: client_tls
# LD_LIBRARY_PATH=/opt/vc/lib raspistill -o image8.jpg
mmal: mmal_vc_port_parameter_set: failed to set port parameter 64:0:ENOSYS
mmal: Function not implemented
mmal: mmal_vc_port_parameter_set: failed to set port parameter 64:0:ENOSYS
mmal: Out of memory
mmal: Unable to set shutter speed

I tried to correct the first problem above by adding /opt/vc/bin to /etc/ld.so.conf.d/06-raspberrypi-userland.conf and running 'ldconfig' -- but it still behaves as above.
raspivid -- captures 10s of video...

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# raspivid -t 10000 -h 480 -w 640 -hf -o video4.h264
mmal: mmal_vc_port_parameter_set: failed to set port parameter 64:0:ENOSYS
mmal: Function not implemented
mmal: mmal_vc_port_parameter_set: failed to set port parameter 48:2:ENOSYS
mmal: failed to set INLINE HEADER FLAG parameters

[hpux735]

Woot!

Thanks Batolemaeus, the package use file changes worked perfectly.

[Gavinmc42]

Wonder if the camera can be got going on the Aarch64 version.
https://community.arm.com/graphics/b/bl ... te-library

Running 32bit on 64 bit
https://github.com/sakaki-/gentoo-on-rp ... too-System

Grab images from VC4 via 32bit, work on them with 64bit and NEON.
So many new things to try now that 64bit Gentoo is here.