Thread: C code of executable file compilation error

Hi guys,
I'm struggling about week to compile a file that's generated by this website:
Spiral Project: Viterbi Decoder Software Generator

K=7 , rate =1/2 with given polynema 109, 79.
(in the website you press generate code in order to generate a code of the decoder)

Im trying to compile the file that's generated by the generator code of the website and I couldn't succeed to compile the file.
could anyone please help me in this?
file called called : infrastructure.tar , and I just downloaded this file.

I downloaded this file in Linux Ubuntu and couldn't succeed to compile the file successfully .. any help please?
there's no code error or whatever, all is how to compile the file correctly.


Appreciated for any help!

Works on my machine.

As well as the infrastructure bundle you also need the '.c' and '.h' file, labeled as spiral-vit<something>.c & spiral-vit<something>.c

I also had to add -lm to the Makefile to include the math library.

Code:

$ make
gcc -O2 -msse2 -I ./ -std=gnu99 -lm -include spiral-vit*.h spiral-vit*.c verify_viterbi.c -o viterbi -lm
$ ./viterbi
Code specifications:
         rate = 1/2
         K = 7 (thus 64 states)
         frame size = 2048 (thus padded frame size = 2054)
         polynomials = { 109, 79 }


Computing error rates over 10000 frames, ebn0 = 3.00 dB, gain = 32
BER 7583/20480000 (   0.00037) FER 1348/10000 (     0.135)


Verification: Error rates of a generic decoder
BER 7583/20480000 (   0.00037) FER 1348/10000 (     0.135)


Execution time for 10000 2054-bit frames: 1.58 sec
decoder speed: 12948 kbits/s
$

Here's the contents of the README:

Code:

To compile the Spiral-generated decoder, simply put the generated code
and header files in the same directory than the infrastructure files and
type "make".


You can then run the executable by typing "./viterbi". It should
return you the error rates of the spiral decoder and of the generic
C decoder plus the decoding speed.


Note that the speed of the generated decoder files is highly dependent
on the compiler because Spiral produces C code with intrinsics and not
assembly code. Therefore, we recommend using the highest possible
optimization level and switching to the Intel compiler if possible (In
this case, try to use the flags "-fast -fno-alias"). Note that, in
some cases, optimizations may actually make the code incorrect which
is easily detectable because the error rate of the code becomes
unrealistic.




-------------------
Frederic de Mesmay
June 4th 2008
Carnegie Mellon University

Originally Posted by laserlight

As indicated by the ".tar", infrastructure.tar is an archive that we call a tarball. You would need to extract the files from this tarball, e.g., by using the tar utility on your Ubuntu Linux box. After doing that, you might find a README file with further instructions, e.g., maybe you'll have to do a ./configure, make, and make install dance, or maybe it uses some other build script, or maybe it only comes with a few source files that you can compile directly.

Hi laserlight, there's a readme file but I didn't understand it, or I should say after I've read it I tried to compile the code according to it and didn't succeed to compile(see please my comments above)

Just also download the other two files, and put them in the same directory as the rest.

Originally Posted by hamster_nz

Just also download the other two files, and put them in the same directory as the rest.

Hi, I will explain exactly what I did:
I downloaded all the files in one directory called infrastructure (after I extracted them ) , I opened my terminal in that directory, I wrote this:
$make
then I write
$gcc -O2 -msse2 -I ./ -std=gnu99 -lm -include spiral-vit*.h spiral-vit*.c verify_viterbi.c -o viterbi -lm
then I write
$./viterbi


I didn't get as what you've shown above, it tells me there's an error while compiling the files regarding to architecture of my pc.

Probably not worth persevering.

They are given three things to download. All three go together to make the complete program.

They only download one of the three parts, try to build it and it doesn't work, because the other two parts are missing....

No mystery to solve.

Finally it's worked fine.
@Salem I didn't notice that I've an answer honestly .. why would I post there if I would have an answer

Appreciated for every guys that helped me here.