Re: call octave from C++ - linker error

[Miklos Espak]

Hi all,

now I compiled and installed the latest stable Octave (3.4.3) from sources.

Then I tried to compile the simple test with the following command:

g++ -I /usr/local/include/octave-3.4.3 -L/usr/local/lib/octave/3.4.3/ -loctave -loctinterp -lcruft -ooctave_test octave_test.cc

I get this error from the linker:

/tmp/ccKIAjJB.o: In function `main':

octave_test.cc:(.text+0x3b): undefined reference to `octave_main'

octave_test.cc:(.text+0x5b): undefined reference to `octave_value::octave_value(int)'

octave_test.cc:(.text+0xa0): undefined reference to `octave_value::octave_value(char const*, char)'

octave_test.cc:(.text+0x1b5): undefined reference to `MatrixType::MatrixType()'

octave_test.cc:(.text+0x1d2): undefined reference to `octave_value::octave_value(Matrix const&, MatrixType const&)'

octave_test.cc:(.text+0x210): undefined reference to `MatrixType::~MatrixType()'

octave_test.cc:(.text+0x250): undefined reference to `feval(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, octave_value_list const&, int)'

octave_test.cc:(.text+0x36e): undefined reference to `operator<<(std::basic_ostream<char, std::char_traits<char> >&, Matrix const&)'

octave_test.cc:(.text+0x382): undefined reference to `do_octave_atexit()'

octave_test.cc:(.text+0x409): undefined reference to `MatrixType::~MatrixType()'

/tmp/ccKIAjJB.o: In function `octave_base_value::octave_base_value()':

octave_test.cc:(.text._ZN17octave_base_valueC2Ev[_ZN17octave_base_valueC5Ev]+0x13): undefined reference to `vtable for octave_base_value'

/tmp/ccKIAjJB.o: In function `octave_base_value::~octave_base_value()':

octave_test.cc:(.text._ZN17octave_base_valueD2Ev[_ZN17octave_base_valueD5Ev]+0x13): undefined reference to `vtable for octave_base_value'

/tmp/ccKIAjJB.o: In function `octave_value_list::resize(int, octave_value const&)':

octave_test.cc:(.text._ZN17octave_value_list6resizeEiRK12octave_value[octave_value_list::resize(int, octave_value const&)]+0x3b): undefined reference to `Array<octave_value>::resize(dim_vector const&, octave_value const&)'

/tmp/ccKIAjJB.o: In function `octave_value_list::elem(int)':

octave_test.cc:(.text._ZN17octave_value_list4elemEi[octave_value_list::elem(int)]+0x26): undefined reference to `Array<octave_value>::resize_fill_value()'

/tmp/ccKIAjJB.o: In function `Array<double>::Array(dim_vector const&)':

octave_test.cc:(.text._ZN5ArrayIdEC2ERK10dim_vector[_ZN5ArrayIdEC5ERK10dim_vector]+0x2e): undefined reference to `dim_vector::safe_numel() const'

collect2: ld returned 1 exit status

The library is there and it contains the required symbols:

address@hidden:~/src/octave-test$ file /usr/local/lib/octave/3.4.3/liboctinterp.so.0.0.0

/usr/local/lib/octave/3.4.3/liboctinterp.so.0.0.0: ELF 64-bit LSB shared object, x86-64, version 1 (GNU/Linux), dynamically linked, not stripped

address@hidden:~/src/octave-test$ strings /usr/local/lib/octave/3.4.3/liboctinterp.so.0.0.0 | grep octave_main

octave_main

What options I have to add?

Does anybody know how to get it working?

Thanks,

Miklos