Compiling som_pak (97) with present gcc

Question

I'm trying to use the original som implementation by Kohonen but I'm getting a segmentation fault error using vcal.

It turns out that you can use an unofficial version which corrects this error found at http://cis.legacy.ics.tkk.fi/hynde/lvq/ but its from 1997, i'm sure that there are a lot of changes in cc compiler so I'm getting this error


    checo@canija:~/bin/som/som_pak-3.2$ make
    gcc -O2   -c -o vcal.o vcal.c
    In file included from datafile.h:28,
                     from vcal.c:26:
    fileio.h:69: error: conflicting types for ‘getline’
    /usr/include/stdio.h:651: note: previous declaration of ‘getline’ was here
    make: *** [vcal.o] Error 1
    checo@canija:~/bin/som/som_pak-3.2$

The file datafile.h


    1:#ifndef SOMPAK_DATAFILE_H
    2:#define SOMPAK_DATAFILE_H
    ...
    24:#include 
    25:#include 
    26:#include "lvq_pak.h"
    27:#include "errors.h"
    28:#include "fileio.h"

Is there anything I can do to recomple this code?

[`getline()`](http://pubs.opengroup.org/onlinepubs/9699919799/functions/getline.html) is now a POSIX function; it wasn't in 1997. Your best bet may be to rename the function in `fileio.h` and where it is used, maybe as simply as: `#undef getline` and `#define getline(a, b, c) som_getline(a, b, c)` in `fileio.h` before the appearance of `getline` and after the `#include `. (Use the right number of parameters, or `#define getline(...) som_getline(__VA_ARGS__)`). If `` is not yet included, then add it to ensure that `getline()` is declared normally, then mapped by your macro. — Jonathan Leffler, May 15 '14 at 23:56

Jonathan Leffler · Accepted Answer · 2019-02-27T04:42:48.180

^{Converting a comment to an answer to allow the question to be resolved.}

getline() is now a POSIX function; it wasn't in 1997. Your best bet may be to rename the function in fileio.h and where it is used, maybe as simply as adding before the appearance of getline and after the #include <stdio.h>.

#undef getline
#define getline(a, b, c) som_getline(a, b, c)

Use the right number of parameters, or

#define getline(...) som_getline(__VA_ARGS__)

If <stdio.h> is not yet included, then add it to ensure that getline() is declared normally, then mapped by your macro.

Compiling som_pak (97) with present gcc

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