Date: Mon, 27 Aug 2012 16:09:03 GMT From: Dan McGregor <dan.mcgregor@usask.ca> To: freebsd-gnats-submit@FreeBSD.org Subject: ports/171119: multimedia/libxine fails to build with clang as cc Message-ID: <201208271609.q7RG93Ui088132@red.freebsd.org> Resent-Message-ID: <201208271610.q7RGA4L1050200@freefall.freebsd.org>
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>Number: 171119
>Category: ports
>Synopsis: multimedia/libxine fails to build with clang as cc
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-ports-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Aug 27 16:10:04 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator: Dan McGregor
>Release: 10-CURRENT
>Organization:
>Environment:
FreeBSD nebuchadnezzar.local 10.0-CURRENT FreeBSD 10.0-CURRENT #0 r+5a7bf35: Wed Aug 22 13:23:02 CST 2012 dan@nebuchadnezzar.local:/home/dan/freebsd-obj/usr/home/dan/freebsd/sys/GENERIC amd64
>Description:
libxine fails with the following error when build with clang:
ifs.c:534:2: error: clobbers must be last on the x87 stack
emms();/*__asm__ __volatile__ ("emms");*/
^
./mmx.h:733:38: note: expanded from macro 'emms'
#define emms() __asm__ __volatile__ ("emms"::: \
^
cc: warning: argument unused during compilation: '-fexpensive-optimizations'
cc: warning: argument unused during compilation: '-fno-force-addr'
1 error generated.
The offending part of mmx.h is:
#define emms() __asm__ __volatile__ ("emms"::: \
"st(1)","st(2)","st(3)","st(4)","st(5)","st(6)","st(7)")
>How-To-Repeat:
Build libxine with CC=clang CXX=clang++ or build world with WITH_CLANG_IS_CC and WITHOUT_GCC then build libxine.
>Fix:
The easiest solution for me was to add USE_GCC=4.4+ to the Makefile, which brought in gcc as a dependency.
The other solution is to remove the clobber list from the emms asm directive. I don't know what that does to building with gcc, though.
>Release-Note:
>Audit-Trail:
>Unformatted:
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