Re: LYNX-DEV can't compile ac-0.90: "Undefined symbol _memmove"

[Foteos Macrides]

Klaus Weide <address@hidden> wrote:
>On Fri, 7 Nov 1997, T.E.Dickey wrote:
>
>> > > Compiling on SunOS4.1.3 with gcc-2.7.2, linking failed with the message:
>> > > 
>> > >  collect2: ld returned 2 exit status
>> > >  ld: Undefined symbol
>> > >     _memmove
>> > 
>> > Just finished compiling _successfully_ on Solaris2.5, gcc-2.7.2.2.  No such
>> > undefined symbol as on the Sun machine.
>
>> I see memmove used explicitly in GridText.c and a couple of places under WWW.
>> There's a workaround for SunOS
>>      #define memmove(d,s,n) bcopy(s,d,n)
>> but it has to be tested in general (I do that in xterm).
>>  
>> (If the reference in GridText.c isn't temporary, I'll add that to my list ;-)
>
>The one in GridText.c is in the color style stuff and has been there for
>a while and nobody has complained.  So don't bother for that one...
>
>The new one was in HTNews.c.  I got rid of it, and checked in
>2.7.1ac-0.91.
>
>    <URL:http://sol.slcc.edu/lynx/current/>

        Both memmove() and bcopy() historically have been avoided in
Lynx as inadequately portable across the supported platforms/flavors.
Use of memcpy() proved to be adequately portable, and thus was used
preferentially.  In old versions of Lynx, bcopy() was needed for some
external code, and it was platform/flavor ifdef'ed as:

#define bcopy(s, d, n) memcpy((d), (s), (n))

but that's gone and there are no non-portable memory management
functions in lynx2-7-1, as far as I know.  I did leave memmove()
in my VMS port of wais for Lynx (the two HTVMS_WaisFoo.c modules),
because they're VMS specific and VMS has it, but that's the only
exception at this point.  The currently active developers are
ill-advised to put memmove() or bcopy() into the next release,
or definitions between those two.

        strdup() is another one that can easily creep in and then
have portability problems.

                                Fote

=========================================================================
 Foteos Macrides            Worcester Foundation for Biomedical Research
 address@hidden         222 Maple Avenue, Shrewsbury, MA 01545
=========================================================================
;
; To UNSUBSCRIBE:  Send a mail message to address@hidden
;                  with "unsubscribe lynx-dev" (without the
;                  quotation marks) on a line by itself.
;