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Re: Fix an 8-year-old AC_REQUIRE bug

From: Paolo Bonzini
Subject: Re: Fix an 8-year-old AC_REQUIRE bug
Date: Tue, 30 Dec 2008 22:07:47 +0100
User-agent: Thunderbird (Macintosh/20081105)

> in other words, it is _expecting_ the AC_REQUIRE to be hoisted in front of 
> the 
> AS_IF, rather than in front of BAR.

Yes, and this is required to have AC_REQUIRE([AC_PROG_CC]) work (as
opposed to direct invocation) even in macros that can be invoked
conditionally, for example with a cache check.  Gnulib uses this
extensively too.


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