Re: [Xenomai-help] valgrind and modprobe xeno_posix

[Franz Engel <franz_lambert_engel@domain.hid>]

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>> Hi,
>> 
>> I'm still doubtful if I installed Xenomai correctly. When I start my QT-Programm 
>> it runs correctly and I can see a new process in /proc/xenomai/state with the 
>> name of my program. I insert the following lines in my *.pro-File (the draft for 
>> my makefile):
>> LIBS += -Wl,@usr/xenomai/lib/posix.wrappers -L/usr/xenomai/lib -lpthread_rt 
>> -lxenomai -lpthread -lrt -Xlinker -rpath -Xlinker /usr/xenomai/lib
>> LIBS += -I/usr/xenomai/include -D_GNU_SOURCE -D_REENTRANT -Wall -pipe -D__XENO__ 
>> -I/usr/xenomai/include/posix
>> 
>> I'm absoult no makefile pro. The two lines are the only thing I changed in my 
>> *.pro file. Do I have to make more changes?

>Wrong makefile, see:
>http://www.xenomai.org/index.php/Porting_POSIX_applications_to_Xenomai#Compilation_flags


>> Futhermore, when I run:
>> valgrind --leak-check=yes ./demo
>> 
>> I get the correct valgrind output, but also a line of xenomai:
>> Xenomai: POSIX skin or CONFIG_XENO_OPT_PERVASIVE disabled
>> (modprobe xeno_posix?)
>> 
>> Do I use a bad makefile?

>Yes, you use a bad makefile, but this is not the reason why your
>application does not work with valgrind: Xenomai applications do not
>work with valgrind.

>Also note that the QT library is compiled to use Linux posix objects,
>not Xenomai posix objects, so depending on what you do, mixing some
>Xenomai code with QT code will not work. The real-time part of the
>application has to clearly been separated from the rest, and only this
>part needs to be linked with Xenomai flags, so, the simplest thing to do
>is to put the real-time part of the application in a dynamic library,
>link-edit this dynamic library with Xenomai posix skin flags, then link
>with this dynamic library the rest of the application, without Xenomai
>posix skin flags. And in the interface between the library and the
>applicaiton, do not put any inline functions calling Xenomai posix skin
>services, as this would ruin what you are trying to achieve.
>
>-- 
>                        Gilles.

O.k. This is a quite helpfull information. I tried to make dynamic librarys and glue them with QT to my whole project. But, how I say, I'm a newbie with makefiles. I tried to trim the satch-example. This is my makefile:
APPLICATION = demoLib
XENO?=/usr/xenomai
XENOCONFIG=$(shell PATH=$(XENO):$(XENO)/bin:$(PATH) which xeno-config 2>/dev/null)
CC=$(shell $(XENOCONFIG) --cc)
CFLAGS=$(shell $(XENOCONFIG) --posix-cflags) $(APP_CFLAGS)
LDFLAGS=$(shell $(XENOCONFIG) --posix-ldflags) $(APP_LDFLAGS)
LDFLAGS+=Xlinker -rpath -Xlinker $(shell $(XENOCONFIG) --libdir)
 
all:: $(APPLICATIONS)
clean::
    $(RM) $(APPLICATIONS) *.o
 
The demoLib works fine, but of course, it is no lib. What I have to change to make a lib? Did I understand it right that the xeno-config is a skript that gives support to get the *FLAGS easier? But where is the compiling comand?


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