bug in makeinfo version check (with PATCH)

[darkc]

Hi,

i am building binutils from source for cross compilation. I did this
successfully in the past but on my new fedora 8 i got errors.

------------

../configure --target=i686-mingw32 --prefix=/opt/cross-tools
make

-------------

WARNING: `makeinfo' is missing on your system.  You should only need it
if
         you modified a `.texi' or `.texinfo' file, or any other file
         indirectly affecting the aspect of the manual.  The spurious
         call might also be the consequence of using a buggy
`make' (AIX,
         DU, IRIX).  You might want to install the `Texinfo' package or
         the `GNU make' package.  Grab either from any GNU archive site.

--------------

binutils 2.18

fedora 8
makeinfo 4.11


--------------

After a little bit of try and error I found the problem
in configure.ac around line 2405:

    # For an installed makeinfo, we require it to be from texinfo 4.4 or
    # higher, else we use the "missing" dummy.
    if ${MAKEINFO} --version \
       | egrep 'texinfo[^0-9]*([1-3][0-9]|4\.[4-9]|[5-9])' >/dev/null
2>&1; then
      :
    else
      MAKEINFO="$MISSING makeinfo"
    fi
    ;;

this version grep works only for one digit minor version numbers.
output of `makeinfo --version`:

makeinfo (GNU texinfo) 4.11

Copyright (C) 2007 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

as a simple patch I suggest something like this:

egrep 'texinfo[^0-9]*([1-3][0-9]|4\.[4-9]|4\.[1-3][0-9]|[5-9])'

I don't know what ([1-3][0-9]| is for, maybe it was a failed try to
catch exactly this.

Thanks

Christian

config.log
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