devel/gmp illegal text-relocation build error on OS X Yosemite

["J. Lewis Muir" <jlmuir%imca-cat.org@localhost>]

Hello!

When I build devel/gmp from pkgsrc 2015Q1 on OS X Yosemite, it fails
with the following error:

===
ld: illegal text-relocation to '___gmp_binvert_limb_table' in .libs/mp_minv_tab.o from '___gmpn_divexact_1' in mpn/.libs/dive_1.o for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
*** [libgmp.la] Error code 1

bmake: stopped in /home/pbulk/build/devel/gmp/work/gmp-6.0.0
1 error

bmake: stopped in /home/pbulk/build/devel/gmp/work/gmp-6.0.0
*** [all-recursive] Error code 1

bmake: stopped in /home/pbulk/build/devel/gmp/work/gmp-6.0.0
1 error

bmake: stopped in /home/pbulk/build/devel/gmp/work/gmp-6.0.0
*** [all] Error code 2

bmake: stopped in /home/pbulk/build/devel/gmp/work/gmp-6.0.0
1 error

bmake: stopped in /home/pbulk/build/devel/gmp/work/gmp-6.0.0
*** Error code 2

Stop.
bmake: stopped in /opt/pkgsrc-world/pkgsrc/devel/gmp
*** Error code 1

Stop.
bmake: stopped in /opt/pkgsrc-world/pkgsrc/devel/gmp
===

Does anyone know what's wrong and how to properly fix it?

If I disable the use of assembly loops by adding the following to
devel/gmp/Makefile, the build *succeeds* and all tests from "bmake test"
*pass*:

===
.if ${OPSYS} == "Darwin"
CONFIGURE_ARGS+=	--disable-assembly
.endif
===

FWIW, I also tried the following configure option combinations, but none
of them worked:

  --with-pic
  --disable-static
  --disable-static --with-pic
  --disable-shared
  --disable-shared --with-pic

The build host is an x86_64 machine running OS X Yosemite (10.10.3;
Darwin 14.3.0).  The compiler is Clang 6.0:

  $ clang --version
  Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
  Target: x86_64-apple-darwin14.3.0
  Thread model: posix

Thank you!

Lewis