FTBFS with ld --as-needed

[Matthias Klose]

I didn't debug the build system too much, a build with ld --as-needed fails with:

c++ -Xlinker --no-undefined -lm -pthread -lhdf5 -llapack -lcblas -lglpk -lm -llzo2 -lz -llzma -L../libshogun -lshogun -shared -L /usr/lib/octave-3.2.4 -loctinterp -loctave -lcruft -o Classifier.oct Classifier_wrap.cxx.o sg_print_functions.cpp.o -L../libshogun -lshogun
Classifier_wrap.cxx.o: In function `SWIG_check_num_args':
/build/buildd/shogun-0.9.3/src/octave_modular/Classifier_wrap.cxx:785: undefined reference to `error(char const*, ...)'
/build/buildd/shogun-0.9.3/src/octave_modular/Classifier_wrap.cxx:783: undefined reference to `error(char const*, ...)'
Classifier_wrap.cxx.o: In function `octave_swig_ref::operator new(unsigned int)':
/build/buildd/shogun-0.9.3/src/octave_modular/Classifier_wrap.cxx:1727: undefined reference to `octave_allocator::alloc(unsigned int)'
Classifier_wrap.cxx.o: In function `octave_value_typeinfo::lookup_binary_op(octave_value::binary_op, int, int)':
/usr/include/octave-3.2.4/octave/ov-typeinfo.h:138: undefined reference to `octave_value_typeinfo::instance'
[further undefined reference messages omitted]

the reason is that objects and local libraries have to appear on the command line first, like:

c++ -Xlinker --no-undefined -shared \
    -o Classifier.oct \
    Classifier_wrap.cxx.o \
    -L../libshogun -lshogun \
    -lm -pthread -lhdf5 -llapack -lcblas -lglpk -lm -llzo2 -lz -llzma \
    -L /usr/lib/octave-3.2.4 -loctinterp -loctave -lcruft

any hint where to fix this properly?

[Matthias Klose (doko)]

fixed in 0.9.3-4ubuntu5