configure: Use LT_INIT from libtool 2 instead of deprecated AC_PROG_LIBTOOL
AC_PROG_LIBTOOL
was replaced by LT_INIT
in libtool 2 in 2008,
so it's time to rely on it.
Clears autoconf warnings:
configure.ac:37: warning: The macro 'AC_LIBTOOL_DLOPEN' is obsolete.
configure.ac:37: You should run autoupdate.
m4/ltoptions.m4:113: AC_LIBTOOL_DLOPEN is expanded from...
configure.ac:37: the top level
configure.ac:37: warning: AC_LIBTOOL_DLOPEN: Remove this warning and the call to _LT_SET_OPTION when you
configure.ac:37: put the 'dlopen' option into LT_INIT's first parameter.
./lib/autoconf/general.m4:2434: AC_DIAGNOSE is expanded from...
m4/ltoptions.m4:113: AC_LIBTOOL_DLOPEN is expanded from...
configure.ac:37: the top level
configure.ac:38: warning: The macro 'AC_PROG_LIBTOOL' is obsolete.
configure.ac:38: You should run autoupdate.
m4/libtool.m4:100: AC_PROG_LIBTOOL is expanded from...
configure.ac:38: the top level