Date: Sun, 4 Apr 1999 22:08:29 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Peter Jeremy <peter.jeremy@auss2.alcatel.com.au> Cc: andreas@klemm.gtn.com, freebsd-current@FreeBSD.ORG Subject: Re: different systat -vmstat output when using egcs to compile kernel Message-ID: <199904050508.WAA06171@apollo.backplane.com> References: <99Apr5.110314est.40323@border.alcanet.com.au>
next in thread | previous in thread | raw e-mail | index | archive | help
:> 1 1 22 407 2 2533 456 264 1 13908 wire 243 \nclk0 irq
:> ^^ !!!
:
:I recognize that from gcc-2.8.1: The cpp behaviour changed and resulted
:in the DEVICE_NAMES macro in vector.h being incorrectly expanded. I
:suspect the same `bug' is in EGCS.
:
:The problem is that cpp (from gcc 2.8.1) _does_not_ remove
:backslash-newline sequences from string constants (and maybe elsewhere
:as well). This causes problems with the DEVICE_NAMES macro defined in
:vector.h and used in vector.s. I have reported this to bug-gcc (in
:mid-June) but haven't seen any response.
:
:At this time, I don't know of any way to disable this - the only work-
:around is to use a gcc-2.7.x derived cpp (eg the standard cpp). This
:implies changing NORMAL_S and DRIVER_S in /sys/i386/conf/Makefile.i386
:to explicitly use the old (2.7.2.1-derived) cpp in front of as.
I suggest using ANSI string constants instead of K&R string constants.
This is perfectly legal:
char *s = "abcdefghi";
char *s = "abc" "def" "ghi";
char *s = "abc"
"def"
"ghi";
:Given that it seems unlikely that we're going to get a fix in either
:egcs or gas in a hurry, our options appear to be:
:1) Keep the gcc2.7.2 cpp around for pre-processing .S
:2) switch to m4 (yuk)
:3) change config to work around the bug.
:4) write a sed (or similar script) to pre-process vector.s
:
:Peter
-Matt
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199904050508.WAA06171>