autoconf ChangeLog TODO acgeneral.m4

[Akim Demaille]

CVSROOT:        /cvs
Module name:    autoconf
Changes by:     Akim Demaille <address@hidden>  00/10/12 03:12:43

Modified files:
        .              : ChangeLog TODO acgeneral.m4 

Log message:
        Diagnose AC_REQUIRE circular dependencies.
        * acgeneral.m4 (_AC_DEFUN_PRO, _AC_DEFUN_EPI): Keep a stack of
        macro expansions, _AC_EXPANSION_STACK.
        Use `_AC_EXPANDING(FOO)' to record the fact that `FOO' is being
        expanded.
        (_AC_REQUIRE): Diagnose required macros which are already being
        expanded.
        Record in _AC_EXPANSION_STACK the AC_REQUIRE calls.
        (_AC_EXPANSION_STACK_DUMP): New macro.

CVSWeb URLs:
http://subversions.gnu.org/cgi-bin/cvsweb/autoconf/ChangeLog.diff?r1=1.901&r2=1.902
http://subversions.gnu.org/cgi-bin/cvsweb/autoconf/TODO.diff?r1=1.90&r2=1.91
http://subversions.gnu.org/cgi-bin/cvsweb/autoconf/acgeneral.m4.diff?r1=1.565&r2=1.566