Matlab Coder not working

Hi to everyone,

I have this function:

function output = simplecontroller(input)
%UNTITLED2 Summary of this function goes here
%   Detailed explanation goes here

%Input
% f0=0;
% flag=f0;
L=input(1);
V=input(2);
Ldot=input(3);
% Vdot=input(4);
flag=input(4);

L0=0.28;
% flag0=0;
S1=0;
S2=1;
Ldot_thres=0;
Vin=2000;
V_thres=Vin;

if(flag==0) % Corresponds to phase X to A
S1=0;
S2=1;
if(Ldot<Ldot_thres && L>=L0*1.5)
    S1=1;
    S2=0;
    flag=1;
end
elseif(flag==1) % Corresponds to phase A to B
    S1=1;
    S2=0;
if(V>=V_thres)
    S1=0;
    S2=0;
    flag=2;
end

elseif(flag==2)
S1=0;
S2=0;
if(Ldot>=0 )
    S2=1;
    S1=0;
    flag=0;
end

elseif(flag==3)
    S2=1;
    S1=0;
if(L<=L0+0.05)
flag=0;
end

else
        flag=0;
        disp('ERROR !!!!!!!!!!!!!!!!!!!!!')
end % end of the principal if statement

output=[S1;S2;flag];
end

This is a really easy code but my Build Log gives me this error:

        1   ### Compiling simplecontroller_initialize.c ...
        2   gcc -c -ansi -pedantic -fwrapv -fPIC -O0 -DMODEL=simplecontroller -DHAVESTDIO -DUSE_RTMODEL -DUNIX -I/media/sf_Desktop/Simulink/Simulink\ backup -I/media/sf_Desktop/Simulink/Simulink\ backup/codegen/lib/simplecontroller -I/media/sf_Desktop/Simulink/Simulink -I/media/sf_Desktop/Simulink/Simulink\ backup/backup -I/usr/local/matlab/R2013a/extern/include -I/usr/local/matlab/R2013a/simulink/include -I/usr/local/matlab/R2013a/rtw/c/src -I/usr/local/matlab/R2013a/rtw/c/src/ext_mode/common -I/usr/local/matlab/R2013a/rtw/c/ert -o "simplecontroller_initialize.o" "simplecontroller_initialize.c"
        3   /usr/lib/gcc/x86_64-linux-gnu/4.7/cc1: /usr/local/matlab/R2013a/sys/os/glnxa64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by /usr/lib/x86_64-linux-gnu/libppl_c.so.4)
        4   /usr/lib/gcc/x86_64-linux-gnu/4.7/cc1: /usr/local/matlab/R2013a/sys/os/glnxa64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by /usr/lib/x86_64-linux-gnu/libppl.so.12)
        5   gmake: *** [simplecontroller_initialize.o] Error 1
        6   
        7   ### Failed to generate all binary outputs.

Someone has an idea of what could be the error?

I defined the input as a vector 1x4 because at every iteration I have a 1x4 vector which goes as input to the function.

Is that correct?

Answer 1

[chef13]

I solved thanks to this post: http://www.mathworks.it/support/solutions/en/data/1-QBCS1/?solution=1-QBCS1

Thanks for your replies!

Answer 2

[Walter Roberson]

You have gcc 4.7 installed. You need gcc 3.4.15 instead (or as well.)

Answer 3

[Ryan Livingston]

The supported version of GCC for R2013a is 4.4.*:

http://www.mathworks.com/support/compilers/R2013a/index.html?sec=glnxa64

The version of GLIBCXX is not necessarily the same as that of GCC:

http://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html#abi.versioning

The version of libstdc++.so is not recent enough on your system. I would suggest checking for newer versions of that package with the package manager on your distribution.