Re: Bug#368012: mingw crosscompilation broken with autoconf-2.59.cvs.2006.05.13-1

[Eric Blake]

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Hi Ralf,

According to Ralf Wildenhues on 5/25/2006 4:49 AM:
> 
> 2006-05-25  Stepan Kasal  <address@hidden>
>       and Ralf Wildenhues  <address@hidden>
> 
>       * lib/autoconf/lang.m4 (_AC_COMPILER_EXEEXT_DEFAULT): Drop the
>       initialization of `ac_cv_exeext', do not override it if it was
>       already set, unless it was set to `no', for compatibility with
>       Autoconf-2.13, and comment this.
>       Do not export `ac_cv_exeext', Libtool hasn't needed this for years.
>       (_AC_COMPILER_EXEEXT_DEFAULT): Likewise, do not export it.
>       (_AC_COMPILER_EXEEXT_WORKS, _AC_COMPILER_EXEEXT_CROSS): Typos.
>       * doc/autoconf.texi (Compilers and Preprocessors) <EXEEXT>:
>       Document that this test may be overridden by setting
>       `ac_cv_exeext'.
> 
> --- lib/autoconf/lang.m4      2006-05-25 12:45:55.000000000 +0200
> +++ lib/autoconf/lang.m4      2006-05-25 12:42:36.000000000 +0200
> @@ -495,9 +495,11 @@
>  rm -f $ac_rmfiles
>  
>  AS_IF([AC_TRY_EVAL(ac_link_default)],
> -[# Be careful to initialize this variable, since it used to be cached.
> -# Otherwise an old cache value of `no' led to `EXEEXT = no' in a Makefile.
> -ac_cv_exeext=
> +[# Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
> +# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
> +# in a Makefile.  Because we should not override ac_cv_exeext if it was
> +# cached, so that the user can short-circuit this test for compilers
> +# unknown to Autoconf.

That last sentence needs help.  I would s/Because we/We/.

- --
Life is short - so eat dessert first!

Eric Blake             address@hidden
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