Paul Eggert wrote:
This macro does not work when the headers #define sigsetjmp to
something else.
Since sigsetjmp might be a macro without a function but might be a
function, which is a bit unusual, I suggest "#if defined sigsetjmp ||
HAVE_SIGSETJMP".
Hi Paul,
Thank you. Clearly, for my own sources I have worked around the issue.
The real problem that I was trying to illuminate is that the fact that
if a particular
interface was implemented as a macro then the AC_CHECK_FUNCS() breaks.
Some seem to argue that one should always know if a particular interface
might
be implemented as a macro (or compiler internal?). If so, then you have to
roll your own autoconf macro. My point is that it would be more user
friendly
if AC_CHECK_FUNCS (or a newly named AC macro) were to presume that if
either you could link to the external name or if the external name were
#define-d,
then you #define HAVE_INTERFACE.
Thanks again. Regards, Bruce
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