Re: How do I add missing stdc functions to libstdc++-v3?

[Jonathan Wakely <jwakely dot gcc at gmail dot com>]

On 15 March 2012 06:32, Marc Glisse wrote:
> On Wed, 14 Mar 2012, Vaugha Brewchuk wrote:
>
>> /bin/ld: Undefined symbols:
>> access(char const*, int)
>> strdup(char const*)
>> strxfrm(char*, char const*, unsigned long)
>> collect2: ld returned 1 exit status
>
>
> It is suspicious that you get the types of the arguments printed here. It
> means the functions were compiled as C++ functions, so probably their
> declaration is missing extern "C".

Indeed, check in the relevant libc headers, <unistd.h> and <string.h>
to see if the headers are enclosed in:

#ifdef __cplusplus
extern "C" {
#endif
...
#ifdef __cplusplus
}
#endif

If none of the NeXT headers have that, there's a compiler setting that
forces all headers in system directories such as /usr/include to be
implicitly treated as though they had that extern "C" linkage.