users November 2018

users@lists.genode.org

15 participants
26 discussions

Porting Library - Undefined References
by John J. Karcher 07 Nov '18

07 Nov '18

Hello, Thanks to Christian and Emery for their answers to my "openssl" problem with porting "libvncserver". It worked like a charm. After some more wrangling, the library actually builds. I haven't written a real test program yet, so I don't know how well it works, but I'm optimistic since I didn't have to change any code. But I have an odd problem. I'd prefer to build it as a shared library, but it gives linker errors when I use: SHARED_LIB = yes in "libvncserver.mk". When I comment out that line, it seems to link successfully. In the "target.mk" file for "test-libvncserver", if I use: LIBS = libvncserver I get the following output: Program test/libports/libvncserver/test-libvncserver LINK test-libvncserver libvncserver.lib.so: undefined reference to `sio_tryread' libvncserver.lib.so: undefined reference to `sio_send' libvncserver.lib.so: undefined reference to `htobe64' libvncserver.lib.so: undefined reference to `htobe16' libvncserver.lib.so: undefined reference to `sio_open' libvncserver.lib.so: undefined reference to `digestsha1' collect2: error: ld returned 1 exit status If I use: LIBS = libc lwip zlib libcrypto libssl libpng jpeg libvncserver the output is more verbose, but seems to boil down to the same basic idea. Does anyone have any ideas on this? Thanks! -- John J. Karcher devuser(a)alternateapproach.com

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Porting Library - Missing "openssl.mk"
by John J. Karcher 06 Nov '18

06 Nov '18

Hello, I have been slowly working on porting "libvncserver" to Genode, as my introduction to the art form. I am new to this sort of thing, but the Porting Guide is good, and there are plenty of examples in "libports", so I have been able to force my way through most of the problems I have encountered so far. (I will have questions later about the correct way of doing things, however.) But I have hit a problem that I can't figure out. The library depends on several external libraries; so far all of them are already in "libports". But one of the dependencies is "openssl", and I get the following error when running "make": "Library-description file openssl.mk is missing" This indeed appears to be the case, both in my local source tree and on GitHub. Do I need to do something different for "openssl", or is it really a missing file? Thanks! -- John J. Karcher devuser(a)alternateapproach.com

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optimization levels in genode
by lzSun 05 Nov '18

05 Nov '18

Hello, I find in repos/base/mk/global.mk, there's a default optimization level which is -O2. When I change this flag to -O3 or -Ofast , the system can't booting ,which stuck at " Starting kernel ... ". I wonder how can I fix this problem and I am now building and run Genode 18.05 with trustzone for hw_imx53_qsb_tz platform. I am looking forward for your reply, thank you very much! ------------------ Best wishes

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Reg Genode on Secure Tablet
by A Noor 02 Nov '18

02 Nov '18

I have successfully emulated ARM-Genode in Bionic beaver. I need to run the Genode on the Android system now. Can anyone pls help me out through this process. A small help also accountable. Regards, Ayesha.

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Re: use hard float in Genode
by lzSun 01 Nov '18

01 Nov '18

>yes, you're right. If you want to compile with hard-float and link against the C++ runtime library >delivered by Genode's toolchain, it will fail. You need to compile the Genode toolchain yourself, >if this is a hard requirement for you. Have a look at the tool/tool_chain script in Genode's source >code repository therefore. Hello ,Stefan. Thanks for your reply! Now I am trying to compile the Genode toolchain myself. I used the scripts in tools/tool_chain but still encountered the same problem. I think I should add some flags in tools/tool_chain, but I have no idea what to add and where to add the flags. I have tried add "GCC_MAKE_OPT += -mfloat-abi=hard -mfpu=vfp" but it make failed. So could you give me some hint on this? Thanks a lot. ------------------ Best wishes

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memory size in tz_vmm
by lzSun 01 Nov '18

01 Nov '18

Hello, I am very interested in genode and I am working on tz_vmm demo using i.mx53-qsb board now. After the tz_vmm start, I find a boot message like this: " Genode 18.05 <local changes> 211 MiB RAM and 64535 caps assigned to init " To my understanding, it's present that the available memory that the genode os in secure world is 211MB. And After the system boot up, I use Top command to observe the memroy that normal world have which gives me like this: " Mem: 37956K used, 49444K free, 0K shrd, 68K buff, 26456K cached " This shows that the total memory the linux in the normal world can use is less than 150MB. And I have some questions about this: 1. Can this memory size be increased? For example, I want to increase the memory size that genode can use. To my understanding, this memory distribution between two worlds(secure and normal) can be configured. So I wonder whether I can determine this memory distribution. If it's indeed configurable, where I can find the source file to configure this and whether this configuration can be changed dynamically when the system is running. 2. As far as I know, the i.mx53-qsb have 1GB, but from the situation above, the total memory size is about 400MB which is far less than 1GB. So why can this situation happened? Thanks, Best wishes

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users November 2018