Obsolete macros in configure.ac

[Grégory Vanuxem]

Hello folks,

The actual configure script was built with autoconf-2.69.

I rebuilt it for my purpose with autoconf 2.71, which was released
almost 1 year ago and, apparently, configure.ac uses obsolete macros.
Here is the output with 2.71 (2.70 not tested).

======================================
configure.ac:27: warning: The macro `AC_CANONICAL_SYSTEM' is obsolete.
configure.ac:27: You should run autoupdate.
./lib/autoconf/general.m4:2081: AC_CANONICAL_SYSTEM is expanded from...
configure.ac:27: the top level
configure.ac:548: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:548: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:548: the top level
configure.ac:555: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:555: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:555: the top level
configure.ac:563: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:563: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:563: the top level
configure.ac:571: warning: The macro `AC_TRY_COMPILE' is obsolete.
configure.ac:571: You should run autoupdate.
./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
configure.ac:571: the top level
==============================

This is just for information, no request behind this mail.

Greg