Date: Thu, 20 Feb 2003 22:29:04 +0100 (CET) From: Christian Weisgerber <naddy@FreeBSD.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: ports/48506: multimedia/libmpeg2 mcpu build problem on alpha Message-ID: <200302202129.h1KLT4o9082852@kemoauc.mips.inka.de>
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>Number: 48506
>Category: ports
>Synopsis: multimedia/libmpeg2 mcpu build problem on alpha
>Confidential: no
>Severity: serious
>Priority: low
>Responsible: freebsd-ports-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Feb 20 14:20:11 PST 2003
>Closed-Date:
>Last-Modified:
>Originator: Christian Weisgerber
>Release: FreeBSD 5.0-CURRENT alpha
>Organization:
>Environment:
System: FreeBSD kemoauc.mips.inka.de 5.0-CURRENT FreeBSD 5.0-CURRENT #0: Wed Feb 5 13:01:08 CET 2003 naddy@kemoauc.mips.inka.de:/usr/obj/usr/src/sys/KEMOAUC alpha
>Description:
On alpha, multimedia/libmpeg2 passes -Wa,-mev6 to the compiler in
order to be able to build MVI code. However, if -mcpu=XXX is passed
in CFLAGS (e.g. from setting CPUTYPE in /etc/mk.conf), it will
override the CPU type. If that CPU model does not support MVI, the
build will fail:
cc -DHAVE_CONFIG_H -I. -I. -I../include -I../include -I../include -pipe -mcpu=ev56 -Wall -fomit-frame-pointer -Wa,-mev6 -MT idct_alpha.lo -MD -MP -MF .deps/idct_alpha.Tpo -c idct_alpha.c -o .libs/idct_alpha.lo
../include/alpha_asm.h:69: warning: `WORD_VEC' defined but not used
{standard input}: Assembler messages:
{standard input}:969: Error: opcode `maxsw4' not supported for target ev56
{standard input}:975: Error: opcode `minsw4' not supported for target ev56
{standard input}:981: Error: opcode `pkwb' not supported for target ev56
[...]
Whether MVI code is actually used is chosen at run time. This is
strictly a build time issue.
>How-To-Repeat:
>Fix:
Index: Makefile
===================================================================
RCS file: /home/ncvs/ports/multimedia/libmpeg2/Makefile,v
retrieving revision 1.9
diff -u -r1.9 Makefile
--- Makefile 14 Jan 2003 15:54:22 -0000 1.9
+++ Makefile 20 Feb 2003 21:14:58 -0000
@@ -39,6 +39,12 @@
CONFIGURE_ARGS+= --disable-sdl
.endif
+# We must be able to build EV6 code; actual CPU-type optimizations
+# are chosen at runtime.
+.if ${MACHINE_ARCH} == "alpha"
+CFLAGS:= ${CFLAGS:N-mcpu=*}
+.endif
+
pre-everything::
@${ECHO_MSG} "====>"
.ifndef(WITH_SDL)
>Release-Note:
>Audit-Trail:
>Unformatted:
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