Re: Platform-specific AC_ARG_*

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* Harlan Stenn wrote on Mon, Jun 23, 2008 at 07:31:17PM CEST:
> 
> As I recall, the recommended behavior is to ignore unknown --with[out]-*
> and --[dis]enable-* flags, as a top-level configure script may be
> calling more than one subordinate configure scripts.

Autoconf 2.62 warns about them by default (quoting NEWS):
| ** Warnings are now generated by default when an installer invokes
|    'configure' with an unknown --enable-* or --with-* option.
|    These warnings can be disabled with the new AC_DISABLE_OPTION_CHECKING
|    macro, or by invoking 'configure' with --disable-option-checking.

Presence of AC_CONFIG_SUBDIRS also turns off the warning as the
mechanism isn't yet smart enough to know about subdir configure options.

Cheers,
Ralf


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