Gcc failed to bootstrap on x86_64!

[H.J. Lu Intel64]

mkdir -p bld
cd bld; \
 RUNTESTFLAGS="--target_board='unix{-m32,}'" ../src-trunk/configure \
	 --prefix=/usr/local --enable-clocale=gnu --with-system-zlib --enable-shared --with-demangler-in-ld --with-fpmath=sse --enable-languages=c,c++,fortran,java,lto,objc
/bin/sh: line 1: ../src-trunk/configure: No such file or directory
make[1]: *** [config] Error 127
make[1]: Leaving directory `/export/gnu/import/git/gcc-test'
    grep "Error " makelog.185805.4.7.x86_64 >> makelog.185805.4.7.x86_64.mail; \
make[1]: *** [config] Error 127
if make gcc; then \
  make check-gcc; \
else \
  if [ -n "makelog.185805.4.7.x86_64" -a -e "makelog.185805.4.7.x86_64" ]; then \
    head -26 makelog.185805.4.7.x86_64 | tail -7 > makelog.185805.4.7.x86_64.mail; \
    grep "Error " makelog.185805.4.7.x86_64 >> makelog.185805.4.7.x86_64.mail; \
    tail -100 makelog.185805.4.7.x86_64 >> makelog.185805.4.7.x86_64.mail; \
  else \
    echo " RUNTESTFLAGS="--target_board='unix{-m32,}'" ../src-trunk/configure  --prefix=/usr/local --enable-clocale=gnu --with-system-zlib --enable-shared --with-demangler-in-ld --with-fpmath=sse --enable-languages=c,c++,fortran,java,lto,objc" > makelog.185805.4.7.x86_64.mail; \
  fi; \
  Mail -s "Gcc `cat src-trunk/gcc/REVISION` failed to bootstrap on x86_64!" \
     hjl.tools@gmail.com gcc-regression@gcc.gnu.org hjl.tools@gmail.com < makelog.185805.4.7.x86_64.mail; \
  exit 1; \
fi
make[1]: Entering directory `/export/gnu/import/git/gcc-test'
rm -rf bld
mkdir -p bld
cd bld; \
 RUNTESTFLAGS="--target_board='unix{-m32,}'" ../src-trunk/configure \
	 --prefix=/usr/local --enable-clocale=gnu --with-system-zlib --enable-shared --with-demangler-in-ld --with-fpmath=sse --enable-languages=c,c++,fortran,java,lto,objc
/bin/sh: line 1: ../src-trunk/configure: No such file or directory
make[1]: *** [config] Error 127
make[1]: Leaving directory `/export/gnu/import/git/gcc-test'