Re: AC_CHECK_FUNCS(sigsetjmp)

[Keith MARSHALL]

Thomas Dickey wrote, quoting Eric Blake:
>> Have you tried AC_CHECK_DECLS instead?  You really are checking
>> whether sigsetjmp is declared and you can compile with it, not
>> whether it is a function and you can link with it.
>
> But supposing that I wanted to pass around a pointer to it, that
> wouldn't help much.

How do you pass around a pointer to an entity which is implemented
as a preprocessor macro?

http://www.opengroup.org/onlinepubs/009695399/toc.htm
| The ISO C standard specifies various restrictions on the usage of
| the setjmp() macro in order to permit implementors to recognize
| the name in the compiler and not implement an actual function.
| These same restrictions apply to the sigsetjmp() macro.

Regards,
Keith.