> -----Original Message-----
> From: Akim Demaille [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, December 21, 2000 4:15 PM
> To: Bernard Dautrevaux
> Cc: 'Mirar'; Autoconf List
> Subject: Re: changequote
>
>
>
> AC_ARG_WITH(mmalloc,
> [ --with-mmalloc Use memory mapped malloc package],
> [case "${withval}" in
> yes) want_mmalloc=true ;;
> no) want_mmalloc=false;;
> *) AC_MSG_ERROR(bad value ${withval} for GDB
> with-mmalloc option)
> ;;
> esac],[want_mmalloc=false])dnl
>
> Didn't try to reproduce, but at least be aware that using dnl like
> this is a bad idea. Use `[]dnl' to avoid having the dnl pasted to the
> last tokens of the expansion of the previous macro (here
> AC_ARG_WITH). This stupid example highlights what might happen.
>
> % m4
> define(foo, bar)
> foo()dnl
> bardnl
> foo()`'dnl toto
> bar
>
Yeah... That's fun :-) It's now a time we no more run into this kind of
stuff with the C preprocessor, so it's kind to know there is still some
places where we can :-)
More seriously, I've had to suppress those dnl's when installing standard
GNU packages (the snippet above is from GDB 5.0 (I got the tarball from
cygwin, but I don't think they add them). This seems to indicate that this
used to work, but no more work now.
Note that inspecting the generated "configure" script it looks like a whole
chunk of code was simply missing in configure, then we get mismatched
constructs (like an unexpected EOF, or an unexpected "esac" or the like...)
Regards,
Bernard
--------------------------------------------
Bernard Dautrevaux
Microprocess Ingenierie
97 bis, rue de Colombes
92400 COURBEVOIE
FRANCE
Tel: +33 (0) 1 47 68 80 80
Fax: +33 (0) 1 47 88 97 85
e-mail: [EMAIL PROTECTED]
[EMAIL PROTECTED]
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