[SOLVED] "syntax error in VERSION script" compiling kins with Halcompile.

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andypugh
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01 Nov 2025 13:21 #337652 by andypugh

[SOLVED] "syntax error in VERSION script" compiling kins with Halcompile. was created by andypugh

I have found a solution to the problem often seen when trying to compile Kinematics (or occasionally other) modules from C-code with halcompile.

Solution:

Make sure that the .c file contains the following code and the problem should be solved.

#include "rtapi_app.h"

This requires the file to supply an app_main and exit:

int comp_id;
int rtapi_app_main(void) {
    comp_id = hal_init("bipodkins");
    hal_ready(comp_id);
    return comp_id;
}

void rtapi_app_exit(void)
{
  hal_exit(comp_id);
}

Explanation

Halcompile creates a Makefile to compile the component. This includes Makefile.modinc

Makefile.modinc contains this code:

    $(Q)objdump -w -j .rtapi_export -t $*.tmp \
    | awk 'BEGIN{print "{ global :"} /rtapi_exported_/{printf("%s;\n", substr($$6,16))} END{print "local : * ; };"}' \
    > $*.ver

Which is what creates the modulename.ver file that the complaint is about. Without #include "rtapi_app.h" the .rtapi_export section doesn't exist, so the .ver file is invalid.

Adding the header is enough to complile the module, but it will then fail to load without an rtapi_app_main()

The following user(s) said Thank You: tommylight, rodw, unknown

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