Re: AC_TRY_COMPILE() annoyances with 2.63b

[Eric Blake]

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According to Mike Frysinger on 4/5/2009 4:10 PM:
> AC_TRY_COMPILE() is invoked with an empty 4th argument: [].  i think
> 
>       [ sp_expire_available=yes ], []
>       )

That's not an empty fourth argument.  Remember, trailing space IS
significant, and only leading space is stripped.  The bug is in your
configure.ac.

That said, autoconf could probably be taught that, for some macros, an
argument of all whitespace is morally equivalent to an empty argument.
Patches welcome.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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