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Re: error: possibly undefined macro: AC_CHECK_HEADERS_ONCE

From: Stepan Kasal
Subject: Re: error: possibly undefined macro: AC_CHECK_HEADERS_ONCE
Date: Sat, 6 Aug 2005 17:41:14 +0200
User-agent: Mutt/1.4.1i


On Fri, Aug 05, 2005 at 10:47:52AM -0400, Sam Steingold wrote:
> Using Stepan Kasal's advice (adjusting for _really_
> integrated sub-packages and separating out not-really integrated
> ones),

I gave you two incompatible advices.  The first one, which you followed,
implied that each of the remaining's would have its own

So for _each_ of the remaining's, you should do
        cd to the dir of that

> $ aclocal -I `pwd`/src/m4 --output=src/autoconf/aclocal.m4

This command examines only ./  It doesn't examine the whole
subtree.  In particular, it doesn't know about modules/regexp/

Hope this explains the cause of the problem.

I know, the aclocal.m4 files are redundant, and it would be nice to have
only one.  But this is what aclocal from Automake 1.9 supports OOTB.

Automake 1.10 will bring "aclocal --include", which can be easily used
to achieve what you want.  See my second advice, if you want to use this
technology before it is released.

Have a nice day,

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