toolchain/52834: NetBSD/sparc cross-build failure

[Shinichi Doyashiki <clare%csel.org@localhost>]

>Number:         52834
>Category:       toolchain
>Synopsis:       NetBSD/sparc cross-build failure
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Dec 17 10:15:00 +0000 2017
>Originator:     Shinichi Doyashiki
>Release:        NetBSD 8.99.9
>Organization:
	at home
>Environment:
System: NetBSD mizuki.csel.org 8.99.9 NetBSD 8.99.9 (XCYMINIPC) #8: Sun Dec 17 04:14:46 JST 2017 clare%mizuki.csel.org@localhost:/export/stage/hack/sys/arch/amd64/compile/XCYMINIPC amd64
Architecture: x86_64
Machine: amd64
>Description:
	NetBSD/sparc build fails as following:

#    create  libgcc_s/_clzdi2.d
CC=/export/stage/tools/bin/sparc--netbsdelf-gcc /export/stage/tools/bin/nbmkdep -f _clzdi2.d.tmp  --     --sysroot=/export/stage/destdir/sparc -I/export/stage/hack/src/external/gpl3/gcc.old/lib/libgcc/libgcc_s -I/export/stage/hack/src/external/gpl3/gcc.old/lib/libgcc/arch/sparc -I/export/stage/hack/src/external/gpl3/gcc.old/usr.bin/gcc/arch/sparc -DIN_GCC -DIN_LIBGCC2 -I/export/stage/hack/src/external/gpl3/gcc.old/dist/libgcc -I/export/stage/hack/src/external/gpl3/gcc.old/dist/libgcc/. -I/export/stage/hack/src/external/gpl3/gcc.old/dist/libgcc/../gcc -I/export/stage/hack/src/external/gpl3/gcc.old/dist/libgcc/../include -fPIC -fbuilding-libgcc -fno-stack-protector -I/export/stage/hack/src/external/gpl3/gcc.old/dist/gcc/config/sparc -I/export/stage/hack/src/external/gpl3/gcc.old/dist/gcc/ginclude -I/export/stage/hack/src/external/gpl3/gcc.old/dist/libgcc -I/export/stage/hack/src/external/gpl3/gcc.old/dist/libgcc/config -I/export/stage/hack/src/external/gpl3/gcc.old/dist/libgcc/config/s
 parc -I/export/stage/hack/src/external/gpl3/gcc.old/dist/gcc -I/export/stage/hack/src/external/gpl3/gcc.old/dist/include -I. -I/export/stage/tmp/external/gpl3/gcc.old/usr.bin/backend    -x assembler-with-cpp _clzdi2.S &&  mv _clzdi2.d.tmp _clzdi2.d
In file included from _clzdi2.S:2:0:
/export/stage/hack/src/external/gpl3/gcc.old/dist/libgcc/config/arm/lib1funcs.S:116:2: error: #error Unable to determine architecture.
 #error Unable to determine architecture.
  ^
nbmkdep: compile failed.
*** [_clzdi2.d] Error code 1

>How-To-Repeat:
	run build.sh as following script:

#!/bin/sh
date=`/bin/date +%Y%m%d`
workdir=`pwd`

echo "===> deleting objdir"
rm -rf   /export/stage/tmp
mkdir -p /export/stage/tmp
rm -rf   /export/stage/objdir
mkdir -p /export/stage/objdir
rm -rf   /export/stage/tools
mkdir -p /export/stage/tools
rm -rf   /export/stage/destdir
mkdir -p /export/stage/destdir

OBJMACHINE=yes
export OBJMACHINE
TOOLDIR=/export/stage/tools
export TOOLDIR

for machine in amd64 i386 evbarm sparc; do
  cd ${workdir}/src || exit

  releasedir=/export/stage/release/${date}
  destdir=/export/stage/destdir/${machine}
  objdir=/export/stage/tmp

  echo "===> deleting ${destdir}"
  rm -rf ${destdir}
  mkdir -p ${destdir}

  ./build.sh -m ${machine} -x -j4 \
        -U \
        -O ${objdir} \
        -D ${destdir} \
        -R ${releasedir} \
        release ${options} \
        2>&1 | tee ${workdir}/make-${machine}.log
done

>Fix:
	Unknown.