Syslog.h

[Jonathan Coxhead]

   On 2 May 2004, at 12:51, Tony van der Hoff wrote:

> Yes. I guess everything needs os.h (or Hdr.OS) for os_error, so the correct
> place to fix it is probably in DefMod. 

   Not quite everything needs "os.h":

   ---"os.h" doesn't need "os.h".

   ---A module that doesn't define any SWI's (and there are a few) doesn't need 
"os.h", probably. (It might do for other reasons, though.)

   So the right place to fix it is not in DefMod: it's in "syslog.swi". It is 
annoying that *almost* everything needs "os.h", but it's livable with.

   A useful test would be to make sure that the following programme compiles

      #include TEST
      int main (void)
      {
          return 0;
      }

for every value of TEST that is a header file. (Maybe some others have slipped 
through the net?) If you have sh/ksh/bash, something like the following could 
do the job

      for f in $(find OS: -name "*.h" -print)
      do
          h=$(basename $f)
          cc -c "-DTEST=\"$h\"" -o /dev/null prog.c
      done

   Cheers ...

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