[Freeciv-Dev] Re: spurious modifications of config.h (PR#222)

[David Pfitzner <dwp@xxxxxxxxxxxxxx>]

David Pfitzner wrote:

> This line in config.h is due to the line
>     AC_OUTPUT_COMMANDS([echo "#undef HAVE_SYS_UIO_H" >> config.h])
> in configure.in, which it appears is only intended to fix brokeness 
> on BeOS.  But apparently autoconf actually just puts all 
> AC_OUTPUT_COMMANDS() into configure, and they run unconditionally 
> every time config.status is run. 

To clarify (?), this is kind of obvious, because the check for BeOS 
occurs at the time configure is run, whereas AC_OUTPUT_COMMANDS 
effectively acts when autoconf is run, directing autoconf to put 
extra commands at the end of the configure script.

-- David