Date: Fri, 23 Dec 2011 12:56:39 GMT From: bob frazier <bobf@mrp3.com> To: freebsd-gnats-submit@FreeBSD.org Subject: ports/163562: avr-libc will not compile when using util/delay.h Message-ID: <201112231256.pBNCud3Y034554@red.freebsd.org> Resent-Message-ID: <201112231300.pBND0Pvx031219@freefall.freebsd.org>
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>Number: 163562 >Category: ports >Synopsis: avr-libc will not compile when using util/delay.h >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-ports-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Dec 23 13:00:24 UTC 2011 >Closed-Date: >Last-Modified: >Originator: bob frazier >Release: 7.4-STABLE >Organization: S.F.T. Inc. >Environment: FreeBSD BSDSilver.SFT.local 7.4-STABLE FreeBSD 7.4-STABLE #15: Thu Dec 15 19:14:22 PST 2011 root@BSDSilver.SFT.local:/usr/obj/usr/src/sys/GENERIC amd64 >Description: attempting to build code for avr using avr-gcc and avr-libc (arduino build environment). Code that makes use of 'delay' causes several compile errors, similar to the following: /usr/local/lib/gcc/avr/4.3.4/../../../../avr/include/util/delay.h:149: error: 'fabs' was not declared in this scope the problem and a workable solution are both described here http://code.google.com/p/arduino/issues/detail?id=604 the attached patch file resolves this issue. >How-To-Repeat: install latest avr-libc and arduino build environment and attempt to build the 'blink' sample. >Fix: see attached patch file, that adds #include <math.h> to /usr/local/avr/include/util/delay.h Patch attached with submission follows: --- include/util/delay.h.in.orig 2010-11-09 11:39:32.000000000 -0800 +++ include/util/delay.h.in 2011-12-23 04:40:40.000000000 -0800 @@ -37,10 +37,13 @@ #ifndef __HAS_DELAY_CYCLES #define __HAS_DELAY_CYCLES @HAS_DELAY_CYCLES@ #endif +// patch recommended by http://code.google.com/p/arduino/issues/detail?id=604 +#include <math.h> +// end patch #include <inttypes.h> #include <util/delay_basic.h> /** \file */ /** \defgroup util_delay <util/delay.h>: Convenience functions for busy-wait delay loops >Release-Note: >Audit-Trail: >Unformatted:
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