Hi,

While making Xenomai packages for ALT Linux I try to test various use
cases, but found some troubles:

There is `demo/alchemy/altency.c` source. It compiles OK for Mercury,
but fails for Cobalt.

Page

    
https://gitlab.denx.de/Xenomai/xenomai/-/wikis/Building_Applications_For_Xenomai_3

implies that it's enough to pass xeno-config output as gcc args. So, I try:

  demo/alchemy# gcc altency.c `/usr/lib/xenomai/cobalt/bin/xeno-config --posix 
--alchemy --cflags --ldflags` -lpthread -lrt -lm
  altency.c:447:10: fatal error: cobalt/uapi/syscall.h: No such file or 
directory
    447 | #include <cobalt/uapi/syscall.h>
        |          ^~~~~~~~~~~~~~~~~~~~~~~
  compilation terminated.

`cobalt/uapi/syscall.h` looks like it belongs kernel headers. But, I
don't find anywhere that kernel headers should be used for cobalt
applications. (If I add to the gcc:

  -I/usr/src/linux-4.19.140-xenomai-alt1.cip33.14/include/xenomai

the demo compiles OK.)

If kernel headers they are required - shouldn't xeno-config pass them?
Or this is documented somewhere I missed?

Thanks,


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