Re: autoconf/218: Recursion limit of 1024 exceeded

[Akim Demaille]

| > 
| > 
| > | >Number:         218
| > | >Category:       autoconf
| > | >Synopsis:       Recursion limit of 1024 exceeded
| > | >Confidential:   no
| > | >Severity:       serious
| > | >Priority:       high
| > | >Responsible:    akim
| > | >State:          open
| > | >Class:          sw-bug
| > | >Submitter-Id:   net
| > | >Arrival-Date:   Tue Mar 19 11:42:02 PST 2002
| > | >Closed-Date:
| > | >Last-Modified:
| > | >Originator:     David Bagley
| > | >Release:        worked fine in 2.13 but fails in 2.53
| > | >Organization:
| > | >Environment:
| > | Solaris 8 Ultra 5
| > | >Description:
| > | Setting a variable with this mess:
| > |          mglv=`(eval "$ac_cpp conftest.$ac_ext") 2>&AC_FD_CC |\
| > |          sed -n 
's/^configure:.*\([0-9][0-9]*\).*\([0-9][0-9]*\).*$/\1.\2/p'`
| > | 
| > | autoconf
| > | configure.in:2101: /usr/remote/bin/m4: ERROR: Recursion limit of 1024 
exceeded, use -L<N> to change it
| > | 
| > | Taking this line out of my configure.in script it proceeds
| > | as normal.
| > 
| > Running autoconf 2.53 on a simple
| > 
| > /tmp % cat configure.ac                                          nostromo 
16:05
| > AC_INIT
| >           mglv=`(eval "$ac_cpp conftest.$ac_ext") 2>&AC_FD_CC |\
| >           sed -n 
's/^configure:.*\([0-9][0-9]*\).*\([0-9][0-9]*\).*$/\1.\2/p'`
| > 
| > works fine.  What exactly is your problem?  Is it solved?
| > 
| AC_INIT
|          changequote(X,Y)
| 
|           mglv=`(eval "$ac_cpp conftest.$ac_ext") 2>&AC_FD_CC |\
|           sed -n 's/^configure:.*\([0-9][0-9]*\).*\([0-9][0-9]*\).*$/\1.\2/p'`
| 
| 
| configure.ac:4: /usr/remote/bin/m4: ERROR: Recursion limit of 1024 exceeded, 
use -L<N> to change it

Please, keep the CC.

Well, using changequote is wrong, and the result you get is then
natural.  Therefore, this is not an Autoconf bug.