tracking a recursive macro

[Patrick Welche]

I don't really know where to ask for help: trying libtool as the last
macro mentioned is an autoconf fixup for libtool..

I'm trying to build apr with cvs autotools, and essentially do

  libtoolize
  sinclude(build/{libtool,ltsugar,ltversion,ltoptsion,argz}.m4) in configure.in
    (instead of aclocal - AC_PROG_LIBTOOL is in configure.in)
  autoheader
  autoconf

but at the autoheader stage

autom4te: running: /usr/local/bin/gm4 --nesting-limit=1024 
--include=/usr/local/share/autoconf
...
configure.in:2084: /usr/local/bin/gm4: ERROR: Recursion limit of 1024 exceeded, 
use -L<N> to change it

Now, that is the AC_OUTPUT line, and the last thing to appear in
autom4te.cache/traces.0t is

m4trace:configure.in:2084: -1- AC_SUBST([LIB@&address@hidden, [$ac_libobjs])
m4trace:configure.in:2084: -1- AC_SUBST_TRACE([LIB@&address@hidden)
m4trace:configure.in:2084: -1- m4_pattern_allow([^LIB@&address@hidden)
m4trace:configure.in:2084: -1- AC_SUBST([LTLIBOBJS], [$ac_ltlibobjs])
m4trace:configure.in:2084: -1- AC_SUBST_TRACE([LTLIBOBJS])
m4trace:configure.in:2084: -1- m4_pattern_allow([^LTLIBOBJS$])

which is from AC_OUTPUT -> AC_OUTPUT_COMMANDS_PRE

# _AC_LIBOBJS_NORMALIZE
# --------------------- 
# Clean up LIBOBJS and LTLIBOBJS so that they work with 1. ac_objext,
# 2. Automake's ANSI2KNR, 3. Libtool, 4. combination of the three.
# Used with AC_CONFIG_COMMANDS_PRE. 
AC_DEFUN([_AC_LIBOBJS_NORMALIZE],
[ac_libobjs=
ac_ltlibobjs=
for ac_i in : $LIB@&address@hidden; do test "x$ac_i" = x: && continue
  # 1. Remove the extension, and $U if already installed.
  ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
  ac_i=`echo "$ac_i" | sed "$ac_script"`
  # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
  #    will be set to the directory where LIBOBJS objects are built.
  ac_libobjs="$ac_libobjs \${LIBOBJDIR}$ac_i\$U.$ac_objext"
  ac_ltlibobjs="$ac_ltlibobjs \${LIBOBJDIR}$ac_i"'$U.lo'
done
AC_SUBST([LIB@&address@hidden, [$ac_libobjs])
AC_SUBST([LTLIBOBJS], [$ac_ltlibobjs])
])


Any idea how I can start to track this down?

Cheers,

Patrick