The backslashes in the regular expression \.c\$ were not quoted enough.
module_list=""
dnl Must use a separate file because autoconf can't stand newlines in an AC_SUBSTed variable.
for module in $enableval ; do
- module=`echo $module | sed -e s/^mod-// -e s/\.c\$//`
+ module=`echo $module | sed -e s/^mod-// -e s/\\\.c\\\$//`
EXTRA_MODULE_OBJS="$EXTRA_MODULE_OBJS mod-$module.\$(OBJEXT)"
module_list="$module_list $module"
echo "WITH_MODULE($module)" >> $MODULE_DEFINES