'make check' fails on PPC64

[Torbjorn Granlund]

"Fuzzy Logic" <fuzzymo at gmail.com> writes:

  Okay, I tried again, but with:
  
  configure --enable-cxx --build=none-unknown-linux-gnu
  
  to build with just the plain vanilla.
  
  make succeeds.
  
  make check fails with an ld error.
  
  last few lines:
  
  ranlib .libs/libtests.a
  creating libtests.la
  (cd .libs && rm -f libtests.la && ln -s ../libtests.la libtests.la)
  gcc -DHAVE_CONFIG_H -I. -I. -I.. -I..  -DNO_ASM  -O3 -c t-bswap.c
  /bin/sh ../libtool --mode=link gcc  -O3   -o t-bswap  t-bswap.o
  libtests.la ../libgmp.la
  gcc -O3 -o .libs/t-bswap t-bswap.o  ./.libs/libtests.a
  /root/updates/gmp-4.2.1/.libs/libgmp.so ../.libs/libgmp.so
  /root/updates/gmp-4.2.1/.libs/libgmp.so: undefined reference to `__gmpn_add_nc'
  /root/updates/gmp-4.2.1/.libs/libgmp.so: undefined reference to `__gmpn_sub_nc'
  collect2: ld returned 1 exit status
  make[4]: *** [t-bswap] Error 1
  make[4]: Leaving directory `/root/updates/gmp-4.2.1/tests'
  make[3]: *** [check-am] Error 2
  make[3]: Leaving directory `/root/updates/gmp-4.2.1/tests'
  make[2]: *** [check-recursive] Error 1
  make[2]: Leaving directory `/root/updates/gmp-4.2.1/tests'
  make[1]: *** [check-recursive] Error 1
  make[1]: Leaving directory `/root/updates/gmp-4.2.1'
  make: *** [check] Error 2
  
  This doesn't seem like a compiler bug. Same everything except the
  option I used for the configure script.
  
We saw similar problems for a x86 fat build, then due to references
from the orphaned object mpn/generic/addsub_n.c.  I think newer
binutils works better, at least for x86.  If it is the same bug, this
patch should make binutils happier:

http://swox.com/gmp/patches/x86-fat.diff

If this helps for you, I am curious what binutils version you're
using.

-- 
Torbjörn