[LITMUS^RT] Starting Liblitmus

[Dhanny R]

well, very thanks for this solving Glenn,

very thanks...

regards..

On Sun, May 31, 2015 at 3:54 PM, Glenn Elliott <gelliott at cs.unc.edu> wrote:

> On Fri, May 29, 2015 at 6:23 PM, Björn Brandenburg <bbb at mpi-sws.org>
> wrote:
>
>
>>> > On 29 May 2015, at 13:13, Dhanny R <dhanker2626 at gmail.com> wrote:
>>> >
>>> > Hello Sir Björn
>>> >
>>> > i have many question about LITMUS,
>>> > i'm interested because for my tesis research...
>>> > and i'm newbie for this
>>> >
>>> > my question are :
>>> > 1. i have many task for testing in liblitmus, it's right if i edit
>>> from base_mt_task (multicore)
>>> > or base_task (single core) or i must create a new file from liblitmus
>>> directory?
>>> >
>>> > 2. how can i compile the code that i build? if any tools must be
>>> installed like gcc or something else, in which directory i must installed?
>>> in liblitmus or any?
>>> >
>>> > 3. if my step wrong, could you give me reference how step by step
>>> using this tools?
>>> >
>>> > glad to know for the fast response
>>>
>>>
>>> Dhany, I’m glad that you are interested in using LITMUS^RT for your
>>> thesis research, but the questions that you are now asking pertain to
>>> issues that are not LITMUS^RT specific and not appropriate for this mailing
>>> list. Some experience working with moderately complex C code bases and
>>> Linux is required to make use of LITMUS^RT.
>>>
>>> To answer your questions:
>>>
>>> 1) You may organize your code any way you like. The two dummy skeletons
>>> exist to make starting up easier, but their use is entirely optional.
>>>
>>> 2) Like most C libraries, liblitmus comes with a makefile. Of course a
>>> working gcc toolchain is required.
>>>
>>> 3) I suggest you first learn how to build regular C programs on Linux,
>>> and how to use make. Once you know how to do that LITMUS^RT is fairly
>>> straightforward to use.
>>>
>>> Best regards,
>>> Björn
>>>
>>
> On Sun, May 31, 2015 at 3:02 PM, Dhanny R <dhanker2626 at gmail.com> wrote:
>
>> hello again,
>> when i want to compile my program with gcc, the error message fatal
>> error: litmus.h: No such file or directory, after i found the directory and
>> compile again, error message shown fatal error: asm/cycles.h  No such file
>> or directory,
>>
>> my question, which directory i can find litmus.h, asm/cycles.h?
>>
>> thanks
>>
>> regards
>>
>
> On May 31, 2015, at 1:38 AM, Dhanny R <dhanker2626 at gmail.com> wrote:
>
> hello, sorry for my last message, i have fixed that, but when i compile my
> sample experiment there is an error message :
>
> root at vm1:~/liblitmus/bin# gcc -o test base_mt_task.c
> /tmp/ccA4KPUl.o: In function `main':
> base_mt_task.c:(.text+0x19): undefined reference to `init_litmus'
> base_mt_task.c:(.text+0x6b): undefined reference to `pthread_create'
> base_mt_task.c:(.text+0x95): undefined reference to `pthread_join'
> /tmp/ccA4KPUl.o: In function `rt_thread':
> base_mt_task.c:(.text+0xc6): undefined reference to `init_rt_task_param'
> base_mt_task.c:(.text+0x112): undefined reference to `init_rt_thread'
> base_mt_task.c:(.text+0x169): undefined reference to `gettid'
> base_mt_task.c:(.text+0x177): undefined reference to `set_rt_task_param'
> base_mt_task.c:(.text+0x1ce): undefined reference to `task_mode'
> base_mt_task.c:(.text+0x220): undefined reference to `sleep_next_period'
> base_mt_task.c:(.text+0x238): undefined reference to `task_mode'
> collect2: ld returned 1 exit status
>
>
> anyone can help me? thanks so much
>
>
>
> Like many C programs, several liblitmus programs link in additional
> libraries.  In your case, base_mt_task.c must also link in the liblitmus
> library.  Here, the compiler is complaining that it cannot find liblitmus
> functions (among others).  Assuming that you have run the liblitmus
> makefile, you should see a static library with the name “liblitmus.a” in
> the liblitmus directory.
>
> You can try the command “gcc -o test base_mt_task.c -llitmus” to tell GCC
> to also link in liblitmus.a.  HOWEVER, I don’t expect that this will
> actually work.  Liblitmus programs usually also link in the standard math
> library (“-lm”), the POSIX real-time library (“-lrt”), and the POSIX
> threading library (“-pthread”).  So you would probably need to do “gcc -o
> test base_mt_task.c -litmus -pthread -lrt -lm”.  (For subtle reasons, you
> want to use “-pthread” and NOT “-lpthread”.)
>
> As you may see in the file liblitmus/Makefile (see here:
> https://github.com/LITMUS-RT/liblitmus/blob/master/Makefile#L221), the
> liblitmus makefile is already set up to compile base_mt_task.c for you.
> Just run “make” in the liblitmus directory (again, after you have compiled
> litmus-rt.)  If you want to write your own liblitmus-based programs, I
> recommend that you modify the liblitmus Makefile to also compile your
> custom source files.  The link above should give you an idea of how to do
> this.
>
> If you’re not familiar with makefiles, I suggest that you follow an online
> tutorial.  Here’s google’s top tutorial:
> http://mrbook.org/blog/tutorials/make/
>
> -Glenn
>
>
>
>
>
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>
>
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