Have you tried man va_copy? Maybe man stdarg.
Should list the requirements for va_copy. Make sure the includes are being included.
Don't be afraid of man -k [term] to search for things.
>From: Rob Hudson <[EMAIL PROTECTED]>
>Reply-To: Eugene Unix and Gnu/Linux User Group <[EMAIL PROTECTED]>
>To: EUGLUG <[EMAIL PROTECTED]>
>Subject: [Eug-lug] c and va_*
>Date: Sun, 20 Jun 2004 20:50:24 -0700
>
>Hi EUGLUG,
>
>I discovered elmo, not the cartoon character, but the mail client:
>http://elmo.sourceforge.net/ I thought it might make a nice replacement to
>mutt, which I've been using on my server for years.
>
>I wanted to try it on my FreeBSD server but it dies on the linking stage
>saying:
>/usr/local/src/elmo-1.2.0/src/str.c(.text+0x28d): undefined reference to `va_copy'
>
>Do you know what va_copy does? Is it part of C?
>
>Here's the actual function in str.c:
>
>int
>str_vsprintf (str_t *str, const char *fmt, va_list ap)
>{
> int n;
> int max_size;
> va_list copy;
>
> if (str == NULL || fmt == NULL)
> return -1;
>
> while (1){
> max_size = str->size - str->len - 1;
> va_copy (copy, ap);
> n = vsnprintf (str->str + str->len, max_size, fmt, copy);
> if (n > -1 && n < max_size){
> str->len += n;
> return n;
> }
> if (n > -1)
> while (max_size < n + 1){
> str->size *= 2;
> max_size = str->size - str->len;
> }
> else {
> str->size *= 2;
> }
>
> str->str = xrealloc (str->str, str->size + 1);
> }
>}
>
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