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Date:      Thu, 28 May 1998 21:37:23 +0800
From:      Peter Wemm <peter@netplex.com.au>
To:        current@FreeBSD.ORG
Subject:   BEWARE - problem with make world can wipe out .h files in src/sys!
Message-ID:  <199805281337.VAA08096@spinner.netplex.com.au>

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Watch out, there is a condition in 'make world' that can cause all your
src/sys/{net,sys,vm,netinet,etc..}/*.h files to get deleted.  I'm think 
this only happens with 'make -DNOCLEAN world', and only if there are 
symlinks in the /usr/obj/tmp/usr/include tree at the point that the world 
is built.

I have committed a fix, but this is a heads up for people building 
not-quite-current sources with -DNOCLEAN.

So, if you have got important changes to src/sys/*/*.h, take a backup copy 
of them to be sure.

Make sure you DO NOT do a 'make -DNOCLEAN world' with rev 1.185 of src/
Makefile.  Everything else should be fine (at least, it shouldn't delete 
your source files....).

Looks like I get the pointy hat for this one.  Sorry folks... :-(

Cheers,
-Peter



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