| > Do we know that file descriptor 5 will always be sent to config.log? | > That's not documented anywhere, so I don't know that we can count on | > it. I think what really need here is a documented macro supplied by | > autoconf that allows us to use the appropriate file descriptor, no | > matter what it is.
Such an FD is too low level a detail to be left to the user. We try to publish high level interface, and keep low level private to Autoconf, so that we can adjust Autoconf to future needs. | (been there/done that/been ignored - 1997): | | dnl Write a debug message to config.log, along with the line number in the | dnl configure script. | AC_DEFUN([CF_MSG_LOG],[ | echo "(line __oline__) testing $* ..." 1>&AC_FD_CC | ])dnl The internal detail AC_FD_CC no longer exists, and is replaced with the internal detail AS_MESSAGE_LOG_FD. As an internal detail, an internal AU_ALIAS preserve some backward compatibility with the internal detail AC_FD_CC.
