Could not open file "ld.lib.so"

[Anonymous]

Sir,
Yesterday I stubled across Genode and wanted to try it on my virtual machine. This is exactly what I did:

cd ~/genode
sudo tar xPfj genode-toolchain-12.11-x86_64.tar.bz2.tar.bz2
tar -xvf genode-13.02.tar.bz2
cd genode-13.02
./tool/create_builddir linux_x86 BUILD_DIR=build.lx
cd build.lx
sudo make run/demo

The demo seems to be running. But the output of make was something like:

using run script /home/pramod/genode/genode-13.02/base-linux/run/env
using run script /home/pramod/genode/genode-13.02/os/run/demo.run
building targets:  core init drivers/timer server/nitpicker server/liquid_framebuffer app/launchpad app/scout test/nitpicker server/nitlog drivers/framebuffer drivers/pci drivers/input
spawn make core init drivers/timer server/nitpicker server/liquid_framebuffer app/launchpad app/scout test/nitpicker server/nitlog drivers/framebuffer drivers/pci drivers/input
make[1]: Entering directory `/home/pramod/genode/genode-13.02/build.lx'
checking library dependencies...
Skip target drivers/framebuffer/fiasco_ux because it requires fiasco
Skip target drivers/framebuffer/omap4 because it requires omap4
Skip target drivers/framebuffer/pl11x/pbxa9 because it requires pl11x platform_pbxa9
Skip target drivers/framebuffer/pl11x/vea9x4 because it requires pl11x platform_vea9x4
Skip target drivers/framebuffer/pl11x/vpb926 because it requires pl11x platform_vpb926
Skip target drivers/framebuffer/vesa because it requires vesa
Skip target drivers/input/fiasco_ux because it requires fiasco
Skip target drivers/input/ps2/pl050 because it requires pl050
Skip target drivers/input/ps2/x86 because it requires ps2
Skip target drivers/pci/device_pd because it requires nova
  Library platform
  Library mini_c
  Library libz_static
  Library libpng_static
  Library syscall
  Library base-common
  Library startup
  Library cxx
  Library base
  Library launchpad
  Library blit
  Library scout_widgets
  Program app/scout/genode/scout
  Program core/core
  Program drivers/framebuffer/pl11x/
  Library lx_hybrid
  Program drivers/framebuffer/sdl/fb_sdl
  Program drivers/input/dummy/dummy_input_drv
  Program drivers/pci/x86/pci_drv
  Library alarm
  Library timer
  Program drivers/timer/timer
  Library init_pd_args
  Program init/init
  Program server/liquid_framebuffer/liquid_fb
  Program server/nitlog/nitlog
  Program server/nitpicker/genode/nitpicker
  Program test/nitpicker/testnit
  Program app/launchpad/launchpad
make[1]: Leaving directory `/home/pramod/genode/genode-13.02/build.lx'
genode build completed
spawn ./core
int main(): --- create local services ---
int main(): --- start init ---
int main(): transferred 17592186044415 MB to init
int main(): --- init created, waiting for exit condition ---
[init] Could not open file "ld.lib.so"
Quota exceeded! amount=4096, size=4096, consumed=4096
[init] upgrading quota donation for SIGNAL session
[init -> timer] args='label="nitpicker", ram_quota=4096'
Quota exceeded! amount=4096, size=4096, consumed=4096
[init -> nitpicker] upgrading quota donation for SIGNAL session
[init -> launchpad] Could not open file "ld.lib.so"
[init -> launchpad] Could not open file "config"
[init -> launchpad] Could not obtain config file
[init -> fb_sdl] creating virtual framebuffer for mode 1024x768@16
[init -> nitpicker] framebuffer is 1024x768@1
[init -> nitpicker] create session with args: fb_format=1, label="launchpad", ram_quota=1646592
[init -> nitpicker] Could not open file "config"
[init -> nitpicker] Could not obtain config file
[init -> nitpicker] create session with args: fb_width=400, fb_height=1504, fb_format=1, label="launchpad", ram_quota=1211392
[init -> timer] args='label="launchpad", ram_quota=4096'
Quota exceeded! amount=4096, size=4096, consumed=4096
[init -> launchpad] upgrading quota donation for SIGNAL session
[init -> launchpad] --- entering main loop ---

As you can see. There are errors like: Could not open file "ld.lib.so" and Could not open file "config" in the output.

Am I missing something? Please help.

[Norman Feske]

Thanks for giving Genode a try, and for the detailed report. The messages you observed are actually not errors but are the normal behaviour. They are merely diagnostic.

The message

Could not open file "ld.lib.so"

is produced by the init process, which tries to look up the dynamic linker when started. Because the demo scenario does not use any dynamically linked executables, the dynamic linker is not needed in this case. So the lookup fails. For scenarios where shared libraries are used, the message turned out to be very useful. So we leave it on by default.

The message

Could not open file "config"

is printed by the nitpicker GUI server, which accepts an optional configuration. Because the demo scenario works nicely with the defaults, we don't provide a configuration.

In short, there is nothing to worry about. Congrats for the first steps into Genode! :-) Now that you have Genode running on Linux, you could try to run the same scenario on a microkernel of your choice, for example the NOVA hypervisor.  If you like to continue your exploration this way, you may find the documentation of the base platforms useful.

Btw, this forum is pretty much deserted. The main point of discussion is the mailing list of the project. Maybe you'd like to join? This way, your questions will reach a broader audience. See http://genode.org/community/mailing-lists

[Nobody/Anonymous]

Thank you for the reply. (even if the forum is deserted :-) ) I will join the mailing lists and will proceed to give a try on NOVA. Thanks for the links too.