[Bluez-devel] Re: learning the basics

[soraberri <421246@posta.unizar.es>]

Marcel Holtmann wrote:
> Hi,
> 
> 
>>This morning, in an attempt of auto-encourage myself, I thougth I was 
>>going to be able to compile the l2test application by my own, only from 
>>the l2test.c source and having all the required libraries properly 
>>installed... Of course I couldn't (crying). My fatal sin is that I'm 
>>learning programming, communications, bluetooth and Linux, all the same 
>>time, and all the same way (you can see that way). I hope don't bother 
>>you trying to justify myself of asking the following question:
>>
>>¿Could you give me some ligth in the points to consider while compiling 
>>a user-made source like the l2test application? I want to do this way 
>>only for learning pourposes, in order to glimpse a bit the whole picture.
>>I'm getting errors of type "undefined references" like the following
>>
>>linking l2captest (libtool)
>>linking l2captest (gcc)
>>/home/soraberri/Desarrollo/estudioC/l2captest/src/l2captest.c:222: 
>>undefined reference to `strtoba'
>>l2captest.o(.text+0x680):/home/soraberri/Desarrollo/estudioC/l2captest/src/l2captest.c:222: 
>>undefined reference to `baswap'
>>/home/soraberri/Desarrollo/estudioC/l2captest/src/l2captest.c:328: 
>>undefined reference to `baswap'
>>l2captest.o(.text+0xb54):/home/soraberri/Desarrollo/estudioC/l2captest/src/l2captest.c:329: 
>>undefined reference to `batostr'
>>/home/soraberri/Desarrollo/estudioC/l2captest/src/l2captest.c:643: 
>>undefined reference to `hci_devba'
>>l2captest.o(.text+0x14df):/home/soraberri/Desarrollo/estudioC/l2captest/src/l2captest.c:645: 
>>undefined reference to `str2ba'
>>*** Exited with status: 2 ***
>>
>>Theese functions are defined in bluetooth.h as you know. I thougth I 
>>should link with the -L /lib/modules/2.6.9-1.667/kernel/net/bluetooth/ 
>>flag, but there is the same output.
> 
> 
> don't link anything against any kernel stuff from userspace. This will
> never work. I don't understand why don't you use --enable-test from the
> bluez-utils configure script. However what you are searching for is:
> 
> 	gcc l2captest.c -o l2captest -lbluetooth
> 
> Regards
> 
> Marcel
> 
> 
> 
> 
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Hi Marcel
Yes, I appreciate very much your answer. You've solved the whole of my 
actual doubts. You said you didn't understand why I don't just use 
--enable-test from the bluez-utils configure script. Well that's easy: 
because I didn't know about the possibility. Anyway, it's helpful for me 
  in order to learn.
Thanks Marcel



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