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  • Include file math_neon.h missing

Hi,
I'm following the instructions to get an Eclipse project working. They are quite good so far, but when I got to the point where I try to build the project, I get a complaint about math_neon.h being missing. I did a search for this file in the folder cloned from Github and I sure don't see it. Also NE10.h

My bad?

Hi,

Did you copy across the Bela sysroot?

I believe so but I will double check

OK, I looked at BelaSysRoot and also at the script file that brings creates it, and I see that it uses rsync to bring stuff over from the BeagleBone. I reran the script file and since the file is still not present, I have to assume it is not on the BeagleBone either. I reviewed the instructions for Eclipse and I see that we didn't dump anything onto the BeagleBone there, so the assumption is that these files are all part of the .img file that are used to program the BeagleBone in the first place. The one I'm using is titled bela_image_v0.3.5b.img.

I have to assume that the problem lies in this area. Either this is the wrong image file or I need to supplement it somehow. It is worth mentioning that I don't have Bela HW yet. I've been waiting for the CTAG cape and trying to get a feel for the dev tools while waiting. It's also worth mentioning that this isn't the first time I've used Eclipse for cross development and cross debugging.

Unfortunately I am away at the moment so can’t check, I do think these files should be copied across though, they may also be in the bela project you import into eclipse.

If you search for them on the BB are they there?

I did a remote find, and there is a math_neon.h in /usr/include on the Bone, but SyncBelaSysroot.sh doesn't include an rsync call for the remote /usr/include folder, so it doesn't come over

Yes, but math_neon.h isn't in it:

ssh root@192.168.7.2 find /root/Bela -name "math_neon.h" // returns nothing

Here's where it is:

Andys-MacBook-Pro-3:~ Andy$ ssh root@192.168.7.2 find / -name "math_neon.h"
/usr/include/math_neon.h

.. and that folder is not included in the rsync list in the script file

a few months ago math_neon.h has been moved from /root/Bela/include to /usr/include/. You shall copy the content of that folder over as part of creating the minimal sysroot

Ah, that will be the problem then.

When I get back home I will do a run through with the new image and update anything that needs changing.

    AndyCap When I get back home I will do a run through with the new image and update anything that needs changing.

    The other thing that has moved are the NE10/ includes. These (and libmathneon) are now provided as packages in Bela/stretch/deb/ and installed in the destination location when the board is updated.

      Yes those were the same two issues I found. If AndyCap can fix up the transfer script for SysRoot and make any project changes, I'll reload everything as a test to make sure we are all up to date.

      Since I'm just bringing the system up, I could also reflash the Bone if the image is out of date. So two questions a) is bela_image_v0.3.5b.img still the correct image and b) do I need to do anything like load packages once I flash the image (if I need to flash the image).

      you should just need to replace

      rsync -avz root@192.168.7.2:/usr/include/alsa /usr/local/linaro/BelaSysroot/usr/include

      with

      rsync -avz root@192.168.7.2:/usr/include /usr/local/linaro/BelaSysroot/usr/

      Thanks for that. It solves the problem with math_neon.h but not the problem with NE10.h. Looking at the include paths in the Eclipse file and the organization of files in the Sysroot and the linaro tools folder, I could probably figure a way to get the files in the right places, but I'd rather mirror what @AndyCap is doing for compatibility. So maybe he will get home soon and update the instructions.

      that should copy the ne10/ folder as well. What is the #include line that fails, exactly? In what file? If it is
      #include <ne10/NE10.h>, it should work!

      My bad. The script file wasn't getting saved out because of permissions. Now I don't have include file errors, but I do have the error below and a bunch more just like it. I just pulled from the dev branch.

      In file included from ../core/AuxTaskRT.cpp:3:0:
../core/../include/xenomai_wraps.h: In function 'int create_and_start_thread(pthread_t*, const char*, int, int, void* (*)(void*), void*)':
../core/../include/xenomai_wraps.h:160:43: error: '__wrap_pthread_setname_np' was not declared in this scope
  __wrap_pthread_setname_np(*task, taskName);

      Right. I think that the order of the -I parameters is wrong. You should have -I"/usr/local/linaro/BelaSysroot/usr/xenomai/include" second, just after -I"/Users/Andy/Dropbox/Developer/Bela/include". I think in Eclipse you fix this by changing the order of the include path in the C++ build settings, but I haven't used Eclipse in ages.

      Doesn't seem to help:

      Building file: ../core/I2c_Codec.cpp
Invoking: GCC C++ Compiler
arm-linux-gnueabihf-g++ -D_GNU_SOURCE -D_REENTRANT -D__COBALT__ -D__COBALT_WRAP__ -DXENOMAI_SKIN_posix -DXENOMAI_MAJOR=3 -DBELA_USE_RTDM -I"/Users/Andy/Dropbox/Developer/Bela/include" -I"/usr/local/linaro/BelaSysroot/usr/xenomai/include" -I"/usr/local/linaro/BelaSysroot/root/Bela/include" -I"/usr/local/linaro/BelaSysroot/usr/include" -I"/usr/local/linaro/BelaSysroot/usr/local/include" -I"/usr/local/linaro/BelaSysroot/usr/xenomai/include/cobalt/" -I/usr/local/linaro/arm-bela-linux-gnueabihf/lib/gcc/arm-bela-linux-gnueabihf/6.3.1/include/ -O0 -g3 -Wall -c -fmessage-length=0 -Wpointer-arith -Wunused-result -fpermissive -march=armv7-a -mtune=cortex-a8 -mfloat-abi=hard -mfpu=neon --fast-math -ftree-vectorize -ftree-vectorizer-verbose=10 -pthread -MMD -MP -MF"core/I2c_Codec.d" -MT"core/I2c_Codec.o" -o "core/I2c_Codec.o" "../core/I2c_Codec.cpp"
In file included from ../core/AuxTaskRT.cpp:3:0:
../core/../include/xenomai_wraps.h: In function 'int create_and_start_thread(pthread_t*, const char*, int, int, void* (*)(void*), void*)':
../core/../include/xenomai_wraps.h:160:43: error: '__wrap_pthread_setname_np' was not declared in this scope
  __wrap_pthread_setname_np(*task, taskName);

      BTW, what do you use instead of Eclipse? I'm always keeping my eye out for something better.

        can you post the output of

        ls /usr/local/linaro/BelaSysroot/usr/xenomai/include

        ?
        Incidentally, you can probably workaround that by adding
        int __wrap_pthread_setname_np ( pthread_t thread, const char * name );
        at the top of xenomai_wraps.h, but I am more curious about the underlying issue.

        jandyman BTW, what do you use instead of Eclipse?

        For Bela, I just compile on the board.

            giuliomoro ncidentally, you can probably workaround that by adding
            int __wrap_pthread_setname_np ( pthread_t thread, const char * name );
            at the top of xenomai_wraps.h, but I am more curious about the underlying issue.

            Actually, in hindsight, both the changes suggested above should not make any difference, because the declaration is there already, though conditional to #if XENOMAI_MAJOR == 3. So the problem seems to be that -DXENOMAI_MAJOR=3 is - for some reason - not reaching the file?
            Can you try adding these lines at the top of include/xenomai_wraps.h?

            #if XENOMAI_MAJOR == 3
#error XENOMAI_MAJOR is in fact equal 3
#endif

#ifdef XENOMAI_MAJOR
#error XENOMAI_MAJOR is defined but not equal 3
#endif