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To: hackers@freebsd.org
Subject: Bletch!
Date: Thu, 28 Aug 1997 16:16:47 -0600
From: Warner Losh <imp@rover.village.org>
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% uname -a
FreeBSD harmony.village.org 3.0-CURRENT FreeBSD 3.0-CURRENT #0: Sat Jun 21 17:52:32 MDT 1997     imp@harmony.village.org:/home/imp/FreeBSD/src/sys/compile/GENERIC  i386
% mkdir /gerbils/2.2
% cd /gerbils/2.2
% cvs co -r RELENG_2_2 src
...
% cd src
% su
# make buildworld
....
===> lib/msun
...
cc -nostdinc -v -D_IEEE_LIBM -I/usr/obj/home/imp/FreeBSD/2.2/src/tmp/usr/include  -c i387_e_acos.S -o i387_e_acos.o
gcc version 2.7.2.1
 /usr/obj/home/imp/FreeBSD/2.2/src/tmp/usr/libexec/cpp -lang-asm -nostdinc -v -I/usr/obj/home/imp/FreeBSD/2.2/src/tmp/usr/include -iprefix /usr/obj/home/imp/FreeBSD/2.2/src/tmp/usr/lib/i386-unknown-freebsd/2.7.2.1/ -undef -$ -Dunix -Di386 -D__FreeBSD__=2 -D__unix__ -D__i386__ -D__FreeBSD__=2 -D__unix -D__i386 -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386) -D__ASSEMBLER__ -D_IEEE_LIBM i387_e_acos.S /var/tmp/cc010392.s
GNU CPP version 2.7.2.1 (80386, BSD syntax)
#include "..." search starts here:
#include <...> search starts here:
 /usr/obj/home/imp/FreeBSD/2.2/src/tmp/usr/include
End of search list.
In file included from /usr/obj/home/imp/FreeBSD/2.2/src/tmp/usr/include/machine/asmacros.h:128,
                 from i387_e_acos.S:36:
/usr/src/lib/libc/i386/DEFS.h:41: machine/asm.h: No such file or directory
*** Error code 1
#

==================================================================

OK.  So I go looking at what has been included, and I find:
% egrep /usr/src /usr/obj/gerbils/2.2/src/tmp/usr/include/machine/asmacros.h
#include "/usr/src/lib/libc/i386/DEFS.h"        /* XXX blech */
% 

Is there any reason why this is the case?  Since this file is used
only by msun (per the comments) in the non kernel case, can't this be
done better?

Are there other gotcha's that I'm setting myself up for by not having
my sources in /usr/src?

Warner