build fails after 3d1205d5771e

[Ben Abbott]

Torsten,

After you changeset 3d1205d5771e, I'm no longer able to build.  Any thoughts on 
why I'm having trouble (MacOSX).

Ben

/bin/sh ../libtool  --tag=CXX   --mode=link /opt/local/bin/g++-mp-4.7 
-I/opt/local/include  -isystem /opt/local/libexec/llvm-3.1/include 
-I/opt/local/include/freetype2 -I/opt/local/include  -I/opt/local/include  
-Wall -W -Wshadow -Wold-style-cast -Wformat -Wpointer-arith -Wwrite-strings 
-Wcast-align -Wcast-qual -pipe -O0 -g -m64 -ggdb3 -gstabs -D_REENTRANT 
-D_THREAD_SAFE -pthread -version-info 1:1:0 -no-undefined -bindir 
/opt/octave/3.7/bin            -headerpad_max_install_names -L/opt/local/lib 
-framework JavaVM -o liboctave.la -rpath /opt/octave/3.7/lib/octave/3.7.5  
array/libarray.la cruft/libcruft.la cruft/ranlib/libranlib.la 
numeric/libnumeric.la operators/liboperators.la system/libsystem.la 
util/libutil.la ../libgnu/libgnu.la              -lcholmod -lmetis -lumfpack 
-lsuitesparseconfig -lamd -lcamd -lcolamd -lccolamd -lcxsparse -larpack 
-lqrupdate -lfftw3_threads -lfftw3 -lfftw3f_threads -lfftw3f -llapack -lcblas 
-lf77blas -latlas -lreadline -lncurses  -L/opt/local/lib -lpcre -ldl  
-L/opt/local/lib -L/opt/local/lib/gcc47/gcc/x86_64-apple-darwin11/4.7.3 
-L/opt/local/lib/gcc47/gcc/x86_64-apple-darwin11/4.7.3/../../.. -lgfortran 
-lquadmath -lm -lm   -lm  
libtool: link: /opt/local/bin/g++-mp-4.7 -dynamiclib  -o 
.libs/liboctave.1.dylib   -Wl,-force_load,array/.libs/libarray.a 
-Wl,-force_load,cruft/.libs/libcruft.a 
-Wl,-force_load,cruft/ranlib/.libs/libranlib.a 
-Wl,-force_load,numeric/.libs/libnumeric.a 
-Wl,-force_load,operators/.libs/liboperators.a 
-Wl,-force_load,system/.libs/libsystem.a -Wl,-force_load,util/.libs/libutil.a 
-Wl,-force_load,../libgnu/.libs/libgnu.a  -L/opt/local/lib -framework JavaVM 
-lstdc++ -lcholmod -lmetis -lumfpack -lsuitesparseconfig -lamd -lcamd -lcolamd 
-lccolamd -lcxsparse /opt/local/lib/libarpack.dylib 
-L/opt/local/lib/gcc47/gcc/x86_64-apple-darwin11/4.7.3 
-L/opt/local/lib/gcc47/gcc/x86_64-apple-darwin11/4.7.3/../../.. 
-L/opt/local/lib/gcc47 -ltatlas -lqrupdate 
/opt/local/lib/libfftw3_threads.dylib /opt/local/lib/libfftw3.dylib 
/opt/local/lib/libfftw3f_threads.dylib /opt/local/lib/libfftw3f.dylib -llapack 
-lcblas -lf77blas -latlas -lreadline -lncurses /opt/local/lib/libpcre.dylib 
-ldl /opt/local/lib/gcc47/libgfortran.dylib 
/opt/local/lib/gcc47/libquadmath.dylib -lm  -O0 -m64 -pthread   -pthread 
-framework JavaVM -install_name  
/opt/octave/3.7/lib/octave/3.7.5/liboctave.1.dylib -compatibility_version 2 
-current_version 2.1 -Wl,-single_module
Undefined symbols for architecture x86_64:
  "octave_link::instance", referenced from:
      octave_link::append_history(std::basic_string<char, 
std::char_traits<char>, std::allocator<char> > const&) in 
libutil.a(util_libutil_la-cmd-hist.o)
      octave_link::enabled()      in libutil.a(util_libutil_la-cmd-hist.o)
      octave_link::instance_ok()       in libutil.a(util_libutil_la-cmd-hist.o)