Re: regression in autoconf 2.65 ?

[Vincent Torri]

Hey,

> According to Vincent Torri on 11/28/2009 2:22 AM:
> > AC_DEFUN([ECORE_CHECK_MODULE],
> > [
> > m4_pushdef([UP], m4_toupper([[$1]]))dnl
> > m4_pushdef([DOWN], m4_tolower([[$1]]))dnl
>
> Lose the extra quotes.  Per the NEWS, m4_toupper and m4_tolower now
> properly quote their expansion.  So you need:
>
> m4_pushdef([UP], m4_toupper([$1]))dnl
> m4_pushdef([DOWN], m4_tolower([$1]))dnl
>
> and everything else should fall into place.  For example,

it seems to work with autoconf 2.64 and 2.65.

> > have_ecore_[]m4_defn([DOWN])=no

i don't understand what i have to change here.

> with the extra quotes, this line was producing
> have_ecore_foo[foo]=no
> instead of the intended
> have_ecore_foo=no
>
> Sorry that this is a backwards-incompatible change, but we did document
> it, and it makes m4_toupper more consistent with other m4sugar text
> manipulation macros, in that it does not spuriously cause macro expansion
> of the resulting text if the case-change happens to name an existing macro.

well, m4 quoting is still like voodoo magic for me. I guess i have to 
carefully read the doc...

> In order to write a configure.ac script that will work with both 2.64 and
> younger, and with 2.65, you will need a wrapper function.  Here's one way
> to write it:
>
> m4_pushdef([AAA],[BBB])dnl
> m4_if(m4_toupper([aaa]),[BBB],
>  [m4_define([my_toupper],[m4_toupper([[$1]])])],
>  [m4_copy([m4_toupper], [my_toupper])])
> m4_popdef([AAA])

I really use AAA, BBB and aaa ? (that sounds like a really stupid 
question) or should I replace them by something ?

Vincent Torri