Link Error while compiling legacy code

I have a c file for legacy code tool. I converted that to Matlab script and calling the function. There is this error:

mex('SPrintF_4_0_sf.c',IC:....\workspace\xxx_Resources\Simulink_Lib') Creating library C:\apps\Matlab\Temp\mex_6x2QlQ\templib.x and object C:\apps\Matlab\Temp\mex_6x2QlQ\templib.exp SPrintF_4_0_sf.obj : error LNK2019: unresolved external symbol LegacyCode_SPrintF_4_0 referenced in function mdlOutputs SPrintF_4_0_sf.mexw64 : fatal error LNK1120: 1 unresolved externals

C:\APPS\MATLAB\R2012B~1\BIN\MEX.PL: Error: Link of 'SPrintF_4_0_sf.mexw64' failed.

I am trying to call a function

Spec = legacy_code('initialize'); Spec.SFunctionName = 'SPrintF_4_0_sf'; Spec.OutputFcnSpec = 'void LegacyCode_SPrintF_4_0()'; Spec.HeaderFiles = {'stdio.h'}; Spec.Options.canBeCalledConditionally = true; Spec.Options.supportsMultipleExecInstances = true; legacy_code('generate_for_sim',Spec); legacy_code('slblock_generate',Spec);

function LegacyCode_SPrintF_4_0()

%****************************************************************************%

% #define ARRAYSIZE 5 clc; clear all; double absValue; double tempValue; double Number; %ARRAYSIZE = 5; %register float tempValue; uint tempint;

out = blanks(5); % _attribute_ ((aligned (8))); / / local data to collect character string % blanksignarray = ' '; % Scale Factor is 10 %

 double MAXVALUE ; %Maximum value of the readout %
           MAXVALUE = 99990;
 double MINVALUE ; %Actual value of min value displayed.%
           MINVALUE = -9990;
%Used in comparison with the raw
%number
% And to set the minimum value %
 double RNDOFFVALUE; % Number used in rounding off to the least %
           RNDOFFVALUE = 5; 
% significant digit %

% do the following at init % % null terminator in last position assigned directly at end %

% Make a local copy of the raw number %

Number=10 ; % temp declaration tempValue = Number * 10;

%tempValue = 10;

%Peg at Minimum value for readout, as necessary % %Use raw number since it hasn't been converted to absoulte value % if ( tempValue MINVALUE ) tempValue = MINVALUE; end % Obtain the absoulte value % if (tempValue < 0.0) absValue = -tempValue; else absValue = tempValue; end % For a negative number, assign the negative sign % if ( tempValue <= -RNDOFFVALUE ) blanksignarray = '-----'; end %Adjust the temp value for rounding of last digit later and scale % tempValue = (absValue + RNDOFFVALUE); % Peg at Maximum value for readout, as necessary % if (tempValue > MAXVALUE) tempValue = MAXVALUE; end % Peel off the digits and assign to the out array % tempint = uint8(tempValue * 0.0001); % khts - k.hts -> k % % tempint = logical(tempint); out(1) = tempint +'0'; tempValue = tempValue - (tempint * 10000); % khts -> 0hts %

                tempint = uint8(tempValue * 0.001); % 0hts -> h.ts -> h %
                out(2) = tempint +'0';
                tempValue = tempValue - (tempint * 1000); % 0hts -> 00ts %

                tempint = uint8(tempValue * 0.01); % 00ts -> t.s -> t %
                out(3) = tempint + '0';
                tempValue = tempValue - (tempint * 100); % 00ts -> 000s %

                tempint = uint8(tempValue * 0.1); % 000s -> s (floor) %
                out(4) = tempint + '0';

                % Replace leading zeros with blanks or sign as appropriate %

                % Position
                % 0123 0123
                % 0xxx => bxxx
                % -0xxx => -xxx
                %
                % Position
                % 0123 0123

           % 00xx => bbxx
                % -00xx => b-xx
                %
                % Position
                % 0123 0123
                % 000x => bbbx
                % -000x => bb-x

% msgbox(out(3)); if ( out(1) == '0' )

                    if ( out(2) ~= '0' )

                        out(1) = blanksignarray(1);
                    else

                        out(1) = ' ';
                    end

                    if out(3) ~= '0'

                        out(2) = blanksignarray(2); %blankorsign; %blankorsign;
                    else

                        out(2) = ' ';
                    end

                    out(1) = '';
                    if out(4) ~= '0'

                        out(3) = blanksignarray(2);

                    else
                        out(3) = ' ';

                    end
                end

                % Copy over 32 bits, array alements (digits) 0 to 3
                ASCII_Out = uint (out);
                % Copy over the last 8 bits %
% ASCII_Out(4) = 0;

                %*********************************************************%