Date: Thu, 24 Oct 2002 10:32:09 -0400 (EDT) From: Chris BeHanna <behanna@zbzoom.net> To: FreeBSD-Stable <stable@freebsd.org> Subject: Re: did someone break -STABLE? Message-ID: <20021024102918.I64739-100000@topperwein.pennasoft.com> In-Reply-To: <20021023100145.GA52743@marvin.bsdng.org>
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On Wed, 23 Oct 2002, Kyle Martin wrote:
> just cvsup'ed 10 minutes ago, and attempted to build a kernel with no
> optimizations (CFLAGS=, COPTFLAGS=), heres what i end up with:
>
> cc -c -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes
> -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual
> -fformat-extensions -ansi -nostdinc -I- -I. -I../.. -I../../../include
> -I../../contrib/ipfilter -D_KERNEL -include opt_global.h -elf
> -mpreferred-stack-boundary=2 -fomit-frame-pointer ../../i386/i386/atomic.c
> In file included from ../../i386/i386/atomic.c:47:
> machine/atomic.h: In function `atomic_set_char':
> machine/atomic.h:106: inconsistent operand constraints in an `asm'
> [...snip...]
> *** Error code 1
>
> Stop in /usr/src/sys/compile/MARVIN.
This is (or should be) a FAQ. For asm to get inlined
appropriately, you need at least -O. Without it, code with inline asm
will fail to compile, every time (at least with GCC-2.95.x).
-pipe is not an optimization; it tells the different compiler
phases to communicate via pipelines instead of using scratch files
in /tmp. Unless /tmp is very, very fast (e.g., a memory filesystem),
using -pipe should speed the compile rather nicely.
--
Chris BeHanna http://www.pennasoft.com
Principal Consultant
PennaSoft Corporation
chris@pennasoft.com
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