[GRASS-dev] compilation issues with lex

[Glynn Clements]

Markus Neteler wrote:

> > OTOH, I'm a bit confused by:
> > 
> > lex.l:76: warning: incompatible implicit declaration of built-in function 'strdup'
> > 
> > which suggests that strdup() is a built-in function. strdup() isn't a
> > particularly obvious choice for a built-in function; most built-in
> > functions tend to be something which can be implemented in a handful
> > of CPU instructions, e.g. memset, memcpy, etc.
> > 
> > I suggest looking at the logic surrounding the declaration of strdup()
> > in string.h, in case that provides any clues.
> 
> Here we are:
> 
> /usr/include/string.h:
> #if defined __USE_SVID || defined __USE_BSD || defined __USE_XOPEN_EXTENDED
> /* Duplicate S, returning an identical malloc'd string.  */
> extern char *strdup (__const char *__s)
>      __THROW __attribute_malloc__ __nonnull ((1));
> #endif

That's essentially what's in mine. Check that there isn't a private gcc
verion in /usr/lib/gcc[-lib]/<arch>/<version>/include. If there isn't,
I have no idea why it's saying "implicit declaration".

It might be worth checking lex.yy.c, to ensure that the
"#include <string.h>" is getting copied there.

-- 
Glynn Clements <glynn at gclements.plus.com>